Malaria Causes Cure

Sample details Pages: 21 Words: 6206 Downloads: 4 Date added: 2017/06/26 Category Biology Essay Type Argumentative essay Did you like this example? Solving a Biological Problem Summary The chapter is about the methodology that is involved in exploring some understanding toward solving a biological problem while doing research in quest. With citation of example of malaria as a problem along with historical stage involved towards gradual understanding related to its causes leading to the findings to its cure and preventions, an attempt was made to present the approach that has been involved in addressing the scientific issues in past. A practical approach that is possible to conduct practically at school level to get the students introduced with research at elementary level and built up some interest in students has been presented in the following chapter. Don’t waste time! Our writers will create an original "Malaria Causes Cure | Sciences Dissertations" essay for you Create order Mathematical and statistical tools that are needed in research have been introduced to analyze the data obtained by using research methodology (hypothetical) to arrive on conclusions about certain aspects of the issues related to malaria to accept, discard or modify the hypothesis on a scientific query. Introduction The human being started putting efforts to explore the world around him right from very beginning. The history is full of examples that show that early human being somehow recorded their opinion about different thing. With passage of time, human beings learnt to evaluate the correctness of their thoughts and opinion on any scientific issue, by setting some experiments, drawing conclusion (hypothesis) based on results, verification of hypothesis by other experiments and reporting it. Research methodology is latest approach involving these procedures to address a scientific problem. Steps involved in Biological Research Procedure Identification of a problem Sufferings of mankind that includes diseases, scarcity of food shelter, utilities etc or related matters are the existing problems from biological origin. To initiate research in an area a problem in a particular area is identified. There can be a wide range of problems e.g. an approach to find a cure for newly emerging disease, find a more effective drug for a curable disease, increase the shelf life of a product etc. Generation of hypothesis Available understanding on an issue that is published in scientific journals is used to draw logical opinion, hypothesis, underlying the biological processes and indicate possibilities that can lead to the management of the problem. There are often more than one hypothesis available for a given scientific query. Usually one hypothesis is being testified by given experiments. (a)Shelf life of chadder cheese increases with increase in number of yeast cells present into it. (b) Quality of spinach deteriorates with increase in rate of transpiration. (c) The rate of decrease in microbial population in a food sample in response of heat treatment at 600C is inversely proportional to its total organic content. Laboratory safety Procedures Every type of biological experimentation should comply with necessary safety procedures that ensures the safety of professionals involved in conducting the experiments and other people. That includes use of special clothing e.g. coats, gloves head cover spectacles etc. All the biological material is carried or grown in specially designed containers that ensure no risk for leakage that can be hazards for other people who can come in contact. All the biological material is heated at 121oC under pressure at 15 psi to kill all type of cells before discarding it whereas chemical agents are discarded as mentioned in safety manuals. Experiment Design Experimentation is a practical approach for investigation a scientific query leading to generation of observations called data. A same question can be investigated by using different experimental approaches. The selection of an experimental design mainly depends upon time required, extent of precision, availability of resources etc. Each experiment design has got some limitations and it is important to ensure that the selected experiment design can optimize for investigating the required scientific query. Each experiment is design by usually changing a variable. In order to test a given hypothesis, experiments are set, usually in triplicate and experiments are repeated at least three times to ensure reproducibility of the data. To avoid adding error in the data it is important to set negative and positive control for a given experiment. Positive control has an ingredient instead of ingredient to be test that should positive result when is added in the reagents and processed as per standard method of experiment in given conditions. On other hand Negative control is set same as positive control but has water or other solvent added instead of reagent to be tested. It is very important that selection of sample that is used in the experiment should be random. It is important to ensure that all the experiments should be done at the same conditions. All those factors that can contribute to add errors should be taken care of. Data Collection and analysis Observations can be collected after completion of experiments or while they are in progress depending on nature of experiments. The data is not always a integral values but can be visual observations that can be recorded by photography. The data is usually recorded with appropriate units in tabular form. This is known as raw data. Every data has some error added into it. Mathematic and statistics an integral part of Biological Analysis The observations that are collected as numerical value after experiments comprise raw data. Mathematical or statistical methods are used to minimize the effect of errors present into it the raw data. The most widely and commonly statistical method that is used to decrease error in data is finding an average in any given readings. Beside that mathematical or statistical tools are used to deduce a logical ground based on numerical value to support, modify or discard any scientific opinion (hypothesis) that is built up on earlier reported scientific findings Use of ratio proportion and percentage Data is analyzed by using mathematical or statistical tools, most commonly that are used include ratio and percentage, for finding an effect of changing a variable on other parameters in a given set of condition. If a numerical variable a represents intensity of a biological event that needs to be compared with intensity of another similar event represented by numerical variable b then ratios are taken out Ratio between intensity of two biological events = a (equation 1) b In order to represent this comparison on scale of 100, percentage of ratio between variables are taken out The general formula for percentage is given as below %= Ratio between two numerical variable x100(equation 2) Substitute equation 1 in general formula of percentage as shown by equation 2 Percent % (ratio between intensity of two biological events) ={ a }x 100 (eq 3) b Usually biological data can comprise of in a range of very small value to very large and hence it is important to convert it on Log10. The general formula for expressing any numerical variable is shown by equation 4 as follow Number(N) on Log 10 scale= Log10(N) (equation 4) Substitute equation 3 into equation 4 Log 10(ratio between intensity of two biological events) =Log10 { a x 100}(eq 5) b Technical limitation associated with use of Log10 scale While expressing any data on Log10 the difficulty arises when it is needed to express integral 0 on Log10 scale (Log10(0)=infinity). In order to cope with this difficulty 1 or any fraction of number that falls within permissible limit of error (5%) is added in all the data in its untreated form. Since the value added is added in every observation and magnitude of value is very little, so it s effect is nullified when data is converted on Log10 scale. In later stages the data can easily be plotted on any type of graphs as discussed in later part of this chapter. Significance of error in decision making and predictions on biological data Every data collected has certain extent of error present into it depending upon experimentation design, procedures and method of taking observations. This error needs to be evaluated before using the data for testing any hypothesis, decision making or predictions. It is defined as tentative variation on negative and positive scale in a set of observations from actual value. The actual numerical value of a biological effect is (B). An experiment was done to note this biological effect. The experiment was repeated N times e.g. (N1 N2 N3 Nt) to showing observations B as (B1 B2 B3.Bt) respectively. The first stage in calculation the error is to find an average The general formula for Average is Average = sum of numerical values of individual observation eq 6 Number of times the observation was taken Substitute the values in equation 6 Average ={B1+ B2+.Bt} eq 7 {Nt} Sum of values of observations ={B1+ B2+.Bt}is shown by S{B} No of times the experiment was repeated {Nt} ={N} Substitute the value in equations in equation 7 Average= S{B} equation 8 {N} Lets value of Average be represented by X Substitute in equation 7 Average = X Second stage is to find the difference between each numerical value of observation and Average = B1-X, B2-XBt-X, Third stage is to square each of the difference =B1-X)2,(B2-X)2, (B3-X)2(Bt-X)2 Fourth stage is to add the square of differences =(B1-X)2+(B2-X)2+(Bt-X)2 Fifth stage is to divide square sum of difference of average of individual numerical variable with number of observations e.g N =S(B1-X)2,( B2-X)2,..(Bt-X)2 N Standard deviation or Error is obtained by taking square root of the quotient obtained by dividing the square sum of difference between the average and the individual numerical variable with number of observations. =S(B1-X)2,( B2-X)2,..(Bt-X)2 N It is an integral value that is expressed, as on negative as well as positive scale e.g if error calculated is 3 then it would be +3 as well as 3. It represents a range within which actual value may lie. In olden days, such calculations were done with the help of calculator but now same work can be done more easily by using different software e.g. excel with computer as a tool. It is often very different to understand the effect underlying in any biological data by merely looking at numerical values. The different types of graphs are used for visual presentation of effect by trends available in data The most commonly types of graphs that are used for the presentation of data are given in figure 2.The same data for different sample e.g. A, B, C is presented on percentage scale by using horizontal and vertical bars whereas error is shown by error bars .Another set of data for sample D, E, F was presented by line graph. Data analysis to decide the status of hypothesis After the mathematical and statistical treatment of raw data a logical ground built up by comparing certain numerical values or more often represented on graphs to accept, modify or reject any hypothesis. In order to test the hypothesis The rate of decrease in microbial population in a food sample in response of heat treatment at 600C is inversely proportional to its total organic, 100 cells of Saccharomyces cerevisiae were inoculated in same volume in mediums with concentration as X, 3X and 70X respectively to make final concentration of each medium as 100 cells/ml.(Sample D contains 3X concentration medium, Sample E contains X concentration and Sample F contains 70X concentration). The medium were kept at 600C for 1x104hours and cells were assayed for viability after 10 hrs, 100, hours, 1000hrs and 10000 hrs respectively. The viability being dependent value was plotted on a graph Y axis against the time in hours after expressing the value on Log 10 scale. Different data points taken on the graph are sufficiently scattered and can not be joined by a straight line accommodating all the point on it. The trend line can be drawn manually by accommodating maximum number of points and leaving as many point above the line as many are there below that line. Such a manually drawn line can not be used for any type of scientific predictions. Otherwise highly precise trend line for a given data can be drawn as explained in section given in the end of the chapter that can be used for making decisions on a given hypothesis and for making predictions. The error bars extending on positive as well as negative scale in same magnitude of Y scale is plotted against each observation. The observation that were taken in this experiment are shown as graphs in Figure 2 e.g. Sample D, E and F were presented by using line graphs on Log 10 scale. The trend lines are introduced to show the type of dependency of one parameter on another. As already discussed earlier the biological data is often presented on Log 10 scale to observe the effects in broader prospective and ignore the slight changes especially when study is made on larger populations of samples e.g. cells with a wide range of variations. The data show that sample D and E has got similar trend (with an increase in variable on X axis, there is a decrease on Y axis variable, Y axis is dependent on x axis and is inversely proportional to it) whereas in sample F, Y variable is independent of X variable as no change in Y variable is observed with an increase in X variable and this is evident by a straight trend line. The conclusion drawn as evident by three graphs that number of viable yeast cells were found to decrease with passage of time when concentration of organic content in medium was X in sample E or 3X in sample D that is represented by a slopes in respective graphs. But this effect was found to be lost when organic concentration was raised to 70X in sample F and that is. This experiment supports the hypothesis The rate of decrease in microbial population in a food sample in response of heat treatment at 600C is inversely proportional to its total organic content. If reported literature indicate some other type of experiments done to check the same hypothesis then results are compared and reason of the variations if there are any are discussed with scientific reference and is reported in a scientific journal. Research Methodology Theory accepted Modification in hypothesis Publication in scientific Journals Discarding above hypothesis Supporting above hypothesis Results interpretation Different Hypotheses Data analysis Data collection Experimental design for a given hypothesis Literature reported in related area Identification of Biological Problem Interpretation of data The data that is obtained is interpreted to draw scientific conclusions. The reported literature is used to give explanation of the conclusion drawn. In the light of conclusion drawn either the hypothesis is accepted, rejected or is modified. If the hypothesis is proven correct with experiments, then it is known as a theory. Scientific articles based on proven hypothesis e.g. theory, disapproved or modified hypothesis are written by scientist involved in research and are sent for publication in scientific journals. Biological Problem as an example A school teacher planned an excursion for students and took paramedic staff equipped with sample collection facility to country side area to study the prevalence of any non contiguous disease in human beings and animals. Malaria is an example of non contiguous disease that is spread only by infected female mosquito is malaria and is a matter of great concern. As reported in newspapers and other literature there was a population of 100,000 people living with minimal facilities of life that on a huge natural water reservoir for drinking water. Recent heavy rain resulted in collection of water of stagnant water and much of this water in later stage drained in reservoir. The students prepared a report explaining how did they use biological methodology to study this case. a) Identification of problem Prevalence of certain incidences of disease symptoms similar to malaria in a given locality was identified as a biological problem. Students wrote the following note after referring the literature about malaria to get basic information about disease. Please refer the picture given below and the literature cited in later part of this chapter. From Mala aria ( bad air) to Malaria-over a period of time Malaria has been a matter of concerns since very beginning. Understanding about malaria has changed over a period of time. Initially it was considered to be caused by some supernatural power. Supported with the findings of higher incidences near the marshy area, malaria was thought to be caused by bad air that is found near marshy areas. With the emergence of germ theory malaria by Louis Pasteur (1852-1895) was thought to be caused by any bacteria. It is strongly believed until Charles Louis Alphonse Laveron (1845-1922) during microscopy of Blood from infected patients observed causative agent of malaria in 1880 and later on reported it to Academy of Medicine in Paris. Albert Freeman Africanus King (1841-1940) who was associated with George Washington University on basis of supporting reports presented the idea that mosquitoes are the mean of transmission of malaria (vector) and discarded the opinion that bad air in marshy area has any role in causing malaria. On basis of his data he suggested that proper netting can help to control the incidences of malaria in Washington. Ronald Ross (1857-1932) was a physician, who studied the life cycle of malarial parasite in mosquites e.g (different stages of parasite infection with a change in morphology) and its transfer to human beings and birds. In 1898 Giovanni Battista Grassi (1854-1925) on basis of understanding about malaria obtained by published literature set an experiment to infect a person who never had malaria (with his permission) in an area of Rome where there was not any case of malaria reported and mosquitoes were not found by exposing the person with Anopheles clavigar for ten night and later on patient developed the symptoms. On basis of his experiment he proved that malaria is spread by mosquitoes in human beings that carries the causative agent Plasmodium. The complete cycle of P. falciparum was observed by Grassi Bignami and Bastianelli in 1899 and the work has been published by Grassi in 1900. The life cycle of Plasmodium has three reproduction stages with different morphologies (shapes). The mosquitoes inject sporozoites in human being s skin that through blood goes to liver where they multiply and change into Merozoites.The second cycle of multiplication does into RBC. Some of the meroziotes after passing through reproductive cycle in RBC converts into gametocytes (male and female gemates) and enters in gut of mosquitoes when they suck blood from an infected human being where they undergo sexual reproduction to zygote which later on converts Oocyst. Oocyste after under going asexual reproduction burst to release newly formed sporozoites that enters in salivary gland of mosquitoes At the site students made a survey of that area and noted the initial observation with the help of photography. They found that not only human being but also the birds are affected by the disease Initial Findings They found that the reservoir (a) was associated with dark places where high populations of mosquitoes can be seen (b).Beside that a few sick birds were also found resting on ground. Diseased patients report to an increase in high fever with shivering that stays for some times and then fever become low or even normal with sweating or even without it. These symptoms are repeated with intervals and patient feels weakness. Initial findings support that the disease is malaria. b) On the basis of their initial findings the following hypothesis was built up. The disease may be Malaria and is caused by Plasmodium Experimentation Plasmodium infect the red blood cells. In order to established that diseased people are suffering from malaria at least 63 patients having disease were bled to collect blood samples. This type of sample that is under study is called as test sample. Blood were taken from at least 50 healthy who do not have any symptoms of disease. Since these people do not have any symptoms of disease it is very likely that Plasmodium may never be detected in their blood. Such a sample that is known to give a negative test is a called a negative control The blood and water samples were collected in collection tubes specially designed for this purpose. The fixed slides of infected Red Blood Cell (RBC) were purchased from the market and was taken as positive control. (a)The sample was not only collected from human beings but also from the diseased animals as well. That the blood of each sample was spread on a glass slide, fixed and stained with Giemsia and was observed under microscope. (b)Beside that the blood samples from infected people were inoculated (added) in RPMI-1640 medium (name of medium used for the growth of Plasmodium that also contain RBC) present in bottle and were incubated to grow causative agent of the disease under laboratory conditions. The sample from these bottles were observed under microscope for presence of Plasmodium after 72 hours of incubation. Furthermore, the surface water from stagnant regions of reservoir was collected in a container and was assayed for presence of larvae of mosquitoes with help of magnifying glass. Laboratory Safety Procedure All the containers having biological material was heated at 1210 C at 15 psi for 15 minutes to kill every type of living cells before discarding them. The chemical agents were discarded as described in their respective safety manuals Result Microscopy results show that the Red Blood Cell of diseased people were found to be infected with Plasmodium. The causative agent of the disease was successfully found to grow in the medium that supports the growth of Plasmodium (Figure 3) and that was confirmed by microscopy e.g Plasmodium were found in the sample from medium under microscope and slides observed were found similar as shown in Figure 1 and Figure 2 Plasmodium Figure 7 The blood sample after mixing with other reagent (as shown with white arrow indicating towards a tube) is then inoculated into the bottle ( as shown in picture) ( source Nature Protocols courtesy to Nature Publishing Group) The surface water samples that was taken from the stagnant water collected near water reservoir were found of have mosquitoes larvae in large number as is shown in Figure 4. Conclusion The results that includes, presence of large number of mosquitoes larvae near the site of outbreak, Plasmodium was found in the infected blood of diseased people, that was successfully grown in the medium and conditions specific confirm that the outbreak is of malaria that was caused by Plasmodium. Skill development to solve a Biological Problem Report A report comprising the incidences of malaria during the years 2002, 2003 and 2004, in three different cities was published in a newspaper. The patient were treated by using drug A and attempt to kill mosquitoes were made by spraying B into environment and adding in water collection. Out of these report related to three cities is given below. In Karachi 530 malarial cases were reported in year of 2002, 534760 in 2003 and 12345668 in 2004 respectively. The mortality reported in these years were 98 in 2002, 120001 in 2003 and 5408889 in 2004.The rain fall recorded in Karachi for year 2002 is 50mm, 2003 is 100 mm and 10,000 mm in 2004.The drug resistance was found in 12 cases in 2002, 60009 cases in 2003 and 9900099 cases in 2004. In 2002, 134 malarial cases were reported in Faisalabad where as in 2003 and 2004 the reported numbers were 1237 and 1379 respectively. The mortality reported in years 2002, 2003 and 2004 were 10, 99, 115 respectively. The annual rainfall reported in these years were 12 mm in 2002, 58 mm in 2003 and 89 mm in 2004.The antimalarial drug resistance was found to be in 2 cases in 2002 , 79 cases in 2003 and 91 cases in 2004. In a similar study that was conducted in Gilgit during these three years, it was found that malaria affected 325 people in 2002, 135 people in 2003 and 350 people in 2004.There were 10 people reported to be died of malarial disease in 2002, 8 people in 2003 and 17 people in 2004. The annual rainfall reported in these years were 130, 120, 105 mm in 2002, 2003 and 2004 respectively. The resistance against anti malarial drug found in 2002, 2003 and 2004 were 9, 4, 9 respectively. Source ( It is an imaginary situation given with data to help student develop research skills) Research Methodology Step 1 Identification of problem from published literature After reading the above mentioned findings, management of heavy occurrence of malarial disease has been identified as a problem. Step 2 literature search for generating the hypothesis taking malaria as a test case Malaria is a very common infectious disease that is commonly associated with poverty. It is caused by protozoan parasites Plasmodium species that is transferred to human being blood circulation system by the vector Anopheles mosquitos bite(1). Literature show that malarial outbreaks can be related with rainfall in that area (2). Malaria is more common in urban area than in cities. However in Africa it is present in both rural and urban areas (3,4)No literature is available about the relation of malarial incidence with location of the place with height above sea level. The occurrence of malarial outbreak can be related with presence of stagnant water that can support the mosquito survival in populations. Heavy use of anti-malarial drugs and mosquito cidal sprays is reported to produce resistance in the protozoa against commonly used drugs (5). 1) Cox F (2002). History of Human parasitology. Clin Microbiol Rev 15 (4): 595-612. 2) Grover-Kopec E, Kawano M, Klaver R, Blumenthal B, Ceccato P, Connor S. 2005 An online operational rainfall-monitoring resource for epidemic malaria early warning systems in Africa. Malar J 4(1): 6. 3) Van Benthem B, Vanwambeke S, Khantikul N, Burghoorn-Maas C, Panart K, Oskam L, Lambin E, Somboon P 2005.Spatial patterns of and risk factors for seropositivity for dengue infection Am J Trop Med Hyg 72 (2): 201-8. 4) Keiser J, Utzinger J, Caldas de Castro M, Smith T, Tanner M, Singer B 2004. Urbanization in sub-saharan Africa and implication for malaria control. Am J Trop Med Hyg 71 (2 Suppl): 118-27. 5)Rieckmann, K.H.2006 The chequered history of malaria control: are new and better tools the ultimate answer? Annals of Tropical Medicine and Parasitology 100(8) 647-662 6) en.wikipedia.org/wiki/Malaria (The Scientific literature is presented with citation of references as is shown in above paragraph) Step 3 Deduction of hypothesis with help of published literature After reading the reported literature as mentioned above following hypothesis can be deduced. Incidence of malaria is dependent on amount of rainfall probably through collection of stagnant water Step 4 Experimental design The data for the parameters analyzed was collected by using standard methods e.g. microscopy of infected blood samples at different hospitals and was published in a newspaper as a scientific report. Step 5 Presentation of Raw data The above mentioned data is presented below in tabular form. Karachi Year Malarial cases reported Mortality Rainfall (mm) No of resistant cases to anti-malarial drug A 2002 530 98 50 12 2003 534760 120001 100 60009 2004 12345668 5408889 10000 9900099 Average/year 4293652.667 1842996 3383.33 3320040 Faisalabad Year Malarial cases reported Mortality Rainfall (mm) No of resistant cases to antimalarial drug A 2002 134 10 12 2 2003 1237 99 58 79 2004 1379 115 89 91 Average/year 916.666 74.6666 53 57.333 Gilgit Year Malarial cases reported Mortality Rainfall (mm) No of resistant cases to antimalarial drug A 2002 325 10 130 9 2003 135 8 120 4 2004 350 17 11000 9 Average/year 270 11.6666 3750 7.333 Data Analysis (a) Data was analyzed by using different mathematical tools. Karachi 8 m above sea level Year Log10 (Malarial cases reported) %Mortality Log10(%Mortality) 2002 2.72427 18.4 1.264 2003 5.7281 22.44 1.351 2004 7.09151 43.81 1.6415 Average/year 5.1812 28.247 1.4188 Faisalabad 300m above sea level Year Log10 (Malarial cases reported) %Mortality Log10(%Mortality) 2002 2.12 7.46 0.8723 2003 3.092 8.0 0.903 2004 3.139 8.33 0.9206 Average /year 2.7836 7.93 0.8986 Gilgit 1500m above sea level Year Log10(Malarial cases reported) %Mortality Log10(%Mortality) 2002 2.51 3.076 0.487986 2003 2.130 5.92 0.77 2004 2.54 4.8 0.68 Average/year 2.3933 4.59866 0.64 Interpretation of data The results were analyzed to estimate the dependency of incidences of malarial disease with amount of rainfall. The frequency of incidence of malarial cases seems to be dependent on amount of rainfall at sea-level places but this dependency is diminished at places at higher altitude from sea level. Theory The data supports the hypothesis that incidences of malarial cases are dependent on amount of rainfall at sea-level places and it is accepted as theory. Publication A scientific paper is written on present understanding accommodating the latest finding obtained and sent to scientific Journals. Hypothesis Incidence of malaria is dependent on amount of rainfall probably through collection of stagnant water Data analysis Theory incidences of malarial cases is dependent on amount of rainfall at sea-level places. Result s interpretation How to draw a best fitted line for a given data A data for a biological experiment, having n different independent variables such x1 x2 x3..xn and its dependent variables y 1 y2 y3..yn is needed to be plotted with best fit line or regression line. Trendline, best fitted line, slope Regression line least square line are the different terms used for the same thing. The general formula is y=mx+bequation 1Y axis where m=slope, b=y-intercept Intercept is a point where a line passes an X axis. Y-intercept represents the value of Yb=y-intercept at which a line crosses it ( x=0). Slope= m=n(Sxy)-( Sx)( Sy) - equation 2n(Sx2)- (Sx)2Y-Intercept =b=Sy- m(Sx)equation 3n Where Sxy=x1y1+x2y2+x3y3xnyn Sx= x1+x2+x3xn Sy= y1+y2+y3..yn r = +1 Sx2= x12+x22+x32..xn2 The values for Slope=m and y-Intercept=b are calculated after putting the values for individual variables in equation 2 and 3 respectively The calculated values for Slope=m and Intercept=b are substituted in equation 1. A best fitted line graph is drawn by plotting the values calculated for y by using equation 1 for a given value of x after substituting the calculated value of slope=m and y-intercept. The Co-efficient of correlation is a quantitative measure to represent how well the data points got accommodated on the trend line.The value of r ranges from 1 to +1. It is-1 for a negative slope line and +1 for a r = -1 positive slope line. The value of r when is closer to zero represents poorer fitted data whereas better fitted data is shown by a value closer to either 1 or +1. Co-efficient of co-relation = n(Sxy)-( Sx)( Sy) [n(Sx2) -(Sx)2 ]0.5 [n(Sy2) -(Sy)2 ]0.5 Exercise Answer following question How is superstition different than hypothesis? Each time the observation is recorded is usually slightly different than earlier observation recorded in the same conditions. In such a situation how does it expected that error is decreased with increase in number of recording the observation? Can any one get an error free observation? Justify your answer with scientific reasons. A student was given a task to measure the length of two piece of clothes (A) was of length 150.75 cm whereas B was with 3.25cm with either of two tapes one having 1 cm as a least count with a capacity to measure a length of 50 cm whereas other with a least count of 0.2 cm for a measurement of length of 10.50. Which of these two measuring tape is more suitable for measurement of piece A and which one more is suitable for measurement of B with least error in both the cases. Please explain your answer with scientific reasons. Why does most of biological data is plotted on the graph on log10 scale? Please encircle the most appropriate answer. 1) The scientific experiments are done. times to ensure that data and findings of the experiment are reproducible. a) one time b) more than one (c) none of them 2) If the results of experiment in the three set of experiments e.g. test, positive control and negative control are same then it means a) There has been some technical problem due to which experiment has not worked b) Experiment worked very well c) None of them 3) A positive control experiment is set to gives a result same as- in a given set of conditions a) positive b) as negative result c) test 4) A Negative control experiment is set to gives a result same as- in a given set of conditions a) positive b) as negative result c) test 5) The results of an experiment that was done at one set obtained at one set of conditions are expected to be- when the same experiment is done at different set of conditions. a) same b) different c) identical Please match the complementary words given in two column Source of error in data collection (a) Random sampling (b)Several Replicate of experiments are done at a given conditions Method to minimize the error (d) Eating of Fish with milk causes vitiligo e)Light is source of energy Superstition (f)Handing of sample (g)Variation in conditions of experiments (h)Recording of data Theory (i) Biasness in sampling (j)Air contains oxygen Theory discarded(k) Sun rotates round the earth (l)Light comes out of eyes Thinking Exercise for implication of scientific methodology a) Please imply the scientific methodology to establish the status( accepted, rejected, modified) on at least two hypothesis related to above given problem deduced after referring the scientific literature cited. Student and teachers are encouraged to use excel. Solution Part 1. Since the problem is same so step 1 and step 2 are identical as done earlier to generate a hypothesis listed below Step 3 Deduction of hypothesis in light of literature Another hypothesis that was built up on basis of scientific literature given is listed below Incidence of malaria is decreases with increase in height above sea level b) Data analysis to find out the effect of altitude above sea level on incidences of malarial cases. Karachi 8 m above sea level Year Log10 (Malarial cases reported) %Mortality Log10(%Mortalit-y) Log10 (Rain fall)( mm) 2002 2.72427 18.4 1.264 1.698 2003 5.7281 22.44 1.351 2 2004 7.09151 43.81 1.6415 4 Average/year 5.1812 28.216 1.4188 2.566 Faisalabad 300m above sea level Year Log10 (Malarial incidence reported) %Mortality Log10(%Mortality) Log10 (Rain fall) (mm) 2002 2.12 7.46 0.8723 1.079 2003 3.092 8.0 0.903 1.7634 2004 3.139 8.33 0.9206 1.949 Average /year 2.7836 7.93 0.8986 1.5973 Gilgit 1500m above sea level Year Log10(Malarial cases reported) %Mortality Log(%Mortality) Log10 (Rain fall)(mm) 2002 2.51 3.076 0.487986 2.11 2003 2.130 5.92 0.772321 2.07 2004 2.54 4.8 0.6812 4.0413 Average/year 2.3933 4.59866 0.6471 2.74043 The average malarial incidences reported during three years were plotted against the altitude of different cities on log scale. Interpretation of data The results were analyzed to estimate the dependency of incidences of malarial disease on altitude of places The incidences of malarial cases seems to be independent on altitude of places as there is considerable decrease in incidences observed in Faisalabad which is just 292m above sea level in comparison to Karachi whereas there is not much difference in number of incidences of malaria reported in Faisalabad and Gilgit whereas Gilgit is 1200m higher above the sea level as compare to Faisalabad. Hypothesis On the basis of above mentioned reason the hypothesis that incidences of malarial cases decreases with increases in altitude has been discarded. Theory On the basis of studies it is established that the incidences of malarial cases does not decrease with increase in altitude. Publication The scientific finding that the incidences of malarial cases does not decrease with increase in altitude. Incidence of malaria cases does not decrease with increase in altitude is accepted Part 2. Since it is the continuation of earlier problem so step 1 and step 2 will remain the same. Step 3 Deduction of hypothesis in light of literature Another hypothesis deduced on basis of finding reported is Resistance to malarial drug decreases with increase in height above sea level e.g. related occurrence with malarial incidences c) Data analysis to find out the effect of altitude above sea level on incidences of resistance against malarial drug A cases. Karachi 8 m above sea level Year Log10(Malarial incidence) %Mortality Log10(%Mortality) Log10 (Rain fall)(mm) % Resistant cases to anti malarial drug A Log 10(% Resistance against anti malarial drug A) 2002 2.72427 18.4 1.266 1.698 2.26 0.3541 2003 5.7281 22.44 1.351 2 11.22 1.0499 2004 7.09151 43.81 1.6415 4 80.19 1.904 Average/year 5.1812 28.216 1.4198 3.529345 77.32437 1.888316 Faisalabad 300m above sea level Year Log 10 (Malarial cases %Mortality Log 10 (%Mortality) Log10 (Rain fall)( mm) % Resistant cases to anti malarial drug A Log10(% Resistant cases against anti malarial drug A) 2002 2.12 7.46 0.8723 1.079 1.49 0.173 2003 3.092 8.0 0.903 1.7634 6.38 0.8048 2004 3.139 8.33 0.9206 1.949 6.59 0.8188 Average /year 2.7836 7.93 0.8986 1.5971 4.82 0.599 Gilgit 1500m above sea level Year Log 10 (Malarial cases reported) %Mortality Log10(%Mortality) Log 10 (Rain fall)(mm) % Resistant cases to anti malarial drug A Log10(% Resistant cases to anti malarial drug A) 2002 2.51 3.076 0.487986 2.11 2.76 0.4423 2003 2.130 5.92 0.772321 2.07 2.9 0.472 2004 2.54 4.8 0.6812 4.0413 2.57 0.410 Average/year 2.3933 4.59866 0.6471 2.74 2.76 0.44142 The average resistance against malarial drug A incidences reported during three years were plotted against the altitude of different cities on log 10 scale. Interpretation of data The results were analyzed to estimate the dependency of resistance against malarial drug A on altitude of places The data show that prevalence of resistance against malarial drug A is found to be independent of altitude of places Hypothesis On the basis of above mentioned reason the hypothesis that prevalence of resistance against malarial drug A is found to be independent of altitude of places has been discarded Publication A scientific paper is written on present understanding accommodating the latest finding obtained and sent to scientific Journals. Resistance to malarial drug decreases with increase in height above sea level Incidence of malaria is dependent on amount of rainfall probably through collection of stagnant water Incidence of malaria is decreases with increase in height above sea level Literature Experiment design Theory incidence of malaria decreases with increase in height above sea level is accepted Hypothesis e.g incidence of malaria is decreases with increase in height above sea level is accepted Data collection Modified Hypothesis e.g. incidences of malarial cases seems independent of amount of rainfall at higher attitude places. Data analysis Results interpretation Hypothesis discarded e.g. resistance against malarial disease decreases with increase in altitude of place Modified Hypothesis e.g. incidences of malarial cases seems independent of amount of rainfall at higher attitude places but is dependent at sea level. Hypothesis e.g. incidences of malarial disease decreases with altitude of place is modified Theory incidences of malarial cases is dependent on amount of rainfall at sea-level places.

Metamorphosis of Eliza Doolittle in Pygmalion by George...

The Metamorphosis of Eliza Doolittle in Pygmalion by George Bernard Shaw The benefits of acquiring an education are not limited to the academic aspects often associated with it. Part of the edification it bestows includes being enabled to reach new insight, being empowered to cultivate a new awareness, and being endowed with a new understanding of life and of self. In Bernard Shaws Pygmalion, Eliza Doolittle experiences this type of enlightenment as the result of undergoing a drastic change in social status. With the sponsorship and guidance of Colonel Pickering, Eliza, a common street flower vendor, receives phonetic instruction from Professor Henry Higgins and is transformed into an elegant and refined duchess (817). Eliza†¦show more content†¦Shaw describes that Eliza is hysterical and much distressed (807) as she continues to defend the innocence of her intentions. Eliza copes with the situation in a state of being that is emotional, uncontrolled, wild, and frenzied because she is unsure that she is indeed blameless and irreproachable. Elizas over-sensitivity is the product of her insecurity. For this reason, being far from reassured (807) as Shaw describes, Eliza repeatedly affirms her virtue making statements like Im a good girl, I am (808). Although Eliza asserts her pride proclaiming that [her] character is as good to [her] as any ladys and that [she had] a right to be [where she liked], Shaw describes that she does so with feeble defiance (810) which indicates the weak level of confidence she possessed. By the middle of the play Elizas self-image has been altered through the enlightenment that comes to her as the result of the education she receives from Henry Higgins and the mannerisms she learns from Colonel Pickering. Eliza gains self-esteem by the merit of her accomplishments, but her self-confidence still lacks strength because she becomes dependent on the reassurance of Higgins and Pickering. Evidence of Elizas changed personality is found in the plays climatic scene where Shaw uses description to convey her disposition. The excessive sensitivity (806) and unwavering pride that was present in Elizas character at the beginning of theShow MoreRelatedSocial Class in Pygmalion1049 Words   |  5 Pagesâ€Å"Pygmalion†, by George Bernard Shaw, is a modern metamorphosis of the story Pygmalion, legendary sculptor and king of Cyprus, who fell in love with his own statue of Aphrodite. At his prayer, Aphrodite brought the statue to life as Galatea. In his own play, Shaw reveals a twist in the Greek myth, where by he transformers a flower girl into a duchess through the power of speech. The author uses this mythology to portray aspects of Victorian England common social class classification. The author usesRead MoreAppropriation Of A Key Text From The Past1364 Words   |  6 PagesYear 11 Preliminary Extension English 2015 Essay: Appropriation of a Key Text From the Past Pygmalion – George Bernard Shaw Pretty Woman – Garry Marshall (dir.) 1990 Question: How have the texts you have studied explored social values? George Bernard Shaw’s play Pygmalion and its appropriation, the movie Pretty Woman directed by Garry Marshall both explore the social values of class, namely the construction of the class system and class divisions, individual independence of the female heroine inRead MoreLanguage : Tool Of Empowerment Essay2280 Words   |  10 Pagesconnotations may conjure up feelings associated with joy, inspiration or even empowerment. On the other hand, words that convey a negative meaning may instill images of pain, sorrow or injustice. George Bernard Shaw’s Pygmalion is an ultimate portrayal of the significance of language in society. More specifically, Shaw aims to critique his concurrent society’s exploitation of women and the working class via his renowned play. However, the irony lies in that though Shaw’s play seem to criticize gender and

Examining the Use of Social Media and Its Impact on Corporate Free Essays

Title Examining the Use of Social Media and Its Impact on Corporate Commerce Assessment A, Part One – Evaluating the Pros and Cons of Different Social Media Sites Identify the pros and cons for each site. Blogger Con: Security – possible transmission of untrustworthy links Blogger Con: Too much information – public disclosure Blogger Con: Ability to post relevant, up-to-the-minute news and updates Blogger Pro: Ability to create a community Blogger Pro: Ability to incorporate elements of other social media sites Blogger Pro: Mass customization – widespread use among target audience Blogger Pro: Ability to receive instant feedback from product demographics Digg Con: Not relevant to the niche audience Digg Con: Ability to receive instant feedback from product demographics Digg Con: Mass customization – widespread use among target audience Digg Con: Instant communication to large groups Digg Pro: Media convergence – showing text, screen shots, videos Facebook Con: Limited visual presentation of product Facebook Con: Ability to filter comments via an approval mechanism Facebook Con: Security – possible transmission of untrustworthy links Facebook Pro: Ability to create a community Facebook Pro: Ability to incorporate elements of other social media sites Facebook Pro: Mass customization – widespread use among target audience Facebook Pro: Instant communication to large groups Facebook Pro: Ability to receive instant feedback from product demographics Facebook Pro: Mobility – viewing on a cell photo adds to the audience Facebook Pro: Ability to post relevant, up-to-the-minute news and updates Facebook Pro: Media convergence – showing text, screen shots, videos Flickr Con: Limited access from target audience Flickr Con: Ability to receive instant feedback from product demographics Flickr Con: Mass customization – widespread use among target audience Flickr Pro: Not a good way to build buzz in the beginning Flickr Pro: Limited visual presentation of product Metacafe Con: Ability to receive instant feedback from product demographics Metacafe Con: Instant communication to large groups Metacafe Con: Ability to receive instant feedback from product demographics Metacafe Pro: Media convergence – showing text, screen shots, videos Twitter Con: Ability to filter comments via an approval mechanism Twitter Con: Character Limits Twitter Con: Limited visual presentation of product Twitter Con: Security – possible transmission of untrustworthy links Twitter Con: Ability to receive instant feedback from product demographics Twitter Pro: Instant communication to large groups Twitter Pro: Mobility – viewing on a cell photo adds to the audience Twitter Pro: Ability to post relevant, up-to-the-minute news and updates Twitter Pro: Ability to receive instant feedback from product demographics YouTube Con: Ability to filter comments via an approval mechanism YouTube Con: Security – possible transmission of untrustworthy links YouTube Pro: Ability to incorporate elements of other social media sites YouTube Pro: Mass customization – widespread use among target audience YouTube Pro: Media convergence – showing text, screen shots, videos Assessment A, Part Two – Examining the Use of Social Media and its Impact on Corporate Commerce Recommend which social media site Master Dynasty should be launched on. Blog, Twitter, and Facebook. We will write a custom essay sample on Examining the Use of Social Media and Its Impact on Corporate or any similar topic only for you Order Now Assessment B – Examining the Use of Social Media and its Impact on Corporate Commerce How can social media sites help us build our brand? Centralizing social site, and create links to our other sites will build up our brand. How can we best reach our target audience? Gather our quality followers instead of quantity, we can choose our niche in our target audience based on profiles. How can it help our corporate commerce to show our audience that we’re human beings? Show audience we are not just here to sell, but are gamers to. How does social media help give people a reason to buy from us? Targeting relevant customers and marketing our brand turns selling into participating online community. How can we use customer comments to improve our corporate commerce? By helping, us keep our customers happier by responding to their individual needs after receiving instant feedbacks of comments and posts. Â © 2011 Toolwire, Inc. All rights reserved. How to cite Examining the Use of Social Media and Its Impact on Corporate, Essay examples

Miseducation of Children free essay sample

Miseducation of Children â€Å"All across the country, educational programs intended for school-aged children are being appropriated for the education of young children (Elkind, 1988, p. 3). The miseducation of children is teaching children skills that are inappropriate for them according to their development level and the skills they possess. It is pushing a child to do too much too soon and often times has nothing to do with the child’s benefit, but rather the parents goals set forth for their children. Miseducating a child can have both short and long-term negative effects on the child’s growth and development. The miseducation of young children is today’s norm. Throughout schools across the country, curriculum is being implemented in classrooms that have little to do with â€Å"the child†, but rather high expectations of educators and parents that would rather have their child writing, reading, and doing basic math at very young ages. Parents bombard their children with extra-curricular activities, such as swimming and gymnastics at too young of an age without knowing the negative effects it can have on their child. We will write a custom essay sample on Miseducation of Children or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page According to David Elkind, parents that do this miseducate their children and â€Å"put them at risk for short- term stress and long-term personality damage for no useful purpose† (Elkind, 1988, p. 4). Children learn in different ways, and at different speeds. Every child is different. Setting too high expectations for children who possess different skill levels can affect that child’s self-esteem. Children look up to adults, so if an adult says that they should be doing a certain task a certain way and they are incapable of doing the task, it can have a negative effect on how the child views him/herself. It can also have a long term effect on how the child learns as he/she gets older. This is why it is important for teachers and parents to use developmentally appropriate practices with the children in their care. Developmentally Appropriate Practice â€Å"Developmentally appropriate practice refers to applying child development knowledge in making thoughtful and appropriate decisions about early childhood program practices† (Gestwicki, 2010, p. 9). Developmentally appropriate practices allow teachers to look at the child as a whole. It allows us to really get to know our children and how they learn, what holds their attention, their likes and dislikes, and so on.

Organized Crime Has For Nearly One Hundred Years Held An Unseen Contro

Organized Crime has for nearly one hundred years held an unseen control over the United States. Running both illegal and legal businesses they have captivated the lives of the country. Here is an overview of the history of this power that knows everything and everyone that has power or wishes to rise to power. The beginning of organized crime goes back to the 13th century. The Mafia was formed in Sicily to help farmers from being terrorized by French and Spanish looters (Waller, p.16). It was not until the 19th century that the Mafia began to show up in cities like New York and New Orleans. By World War I, every major city had powerful local gangs, not necessarily a Mafia group. The Mafia's discipline held all of the gangs together. The Mafia had only two major objections dealing with crime. There was to be no drug dealers in the Mafia and prostitiution was not allowed. The cheif weapons of the Mafia were death threats and the code of omerta'(the code of silence). When omerta' was broken, the police cleaned up the mess while the rival gang took over. Prohibition brought the birth of organized crime to the United States. Prohibition was ratified on January 29, 1919 but didn't take hold until 1920 (Compton's,p.1). Prohibition, which was the 18th Amendment of the Constitution, made it illegal to buy, sell, or transport alcoholic beverages. It also opened a new market for illegal booze to those who would risk it. Prohibition also proved to be filled with murder and corruption. Men like Lucky Luciano, Dutch Schultz, Al Capone, Meyer Lansky, and Vito Genovese got started during this time. Prohibition began with the sale of foreign booze that was smuggled into the country. After several raids and many thousands of dollars lost, the mob turned to more producing of their own illegal alcohol. Bootlegged whiskey was known as "white lightning" (Waller,p.29). Illegal alcohol was sold two ways: you could put it in bottles or it was sent to the taverns in tin cans. The highly violent city of Chicago had been divided up into five different turf areas for bootleggers. This agreement would have worked out except that one major bootlegger was excluded from the deal. The O' Donnell brothers had controlled the southern most area of Chicago but had not been allowed to join the meeting. This group of brothers eventually met their match after many years of war. The city of Chicago had been split up between six gangs. It was an agreement over areas of control. The noth side of Chicago was divided between Al Capone and Dion O'Banion. O'Banion was to control the beer while Capone controlled the hard liquor. This eventually led to the death of O'Banion. The south side of the city was ran by the Genna family. The west side was controlled by the Valley Gang while the southwest side was ran by the Saltis-McErlane Gang. To the far south side the Ragen's Colts controlled the bootlegging industry (Waller,p.31). During this time, a new weapon came into play. The Thompson submachine gun, also known as the tommy gun or chopper, became a major factor in criminal activity. This machine gun also became known as the Chicago violin because of its heavy use in the city. It was a sad day for several organized gangs when Prohibition was repealed. On December 5, 1933 the 21st Amendment was passed making it legal to buy, sell, and transport alcoholic beverages. The fourteen years of Prohibition had made the mob and Mafia grow powerful and rich. One of the most famous mobsters of all time was Al Capone. Born Alphonse Capone in Brooklyn, New York, he was the son of immigrants from Naples, Italy (Waller, p.27). Although Capone was of Italian descent, he was never a member of the Mafia. As a teenager Al Capone was involved with crime. His first crime job was as a bouncer in a mob bar called Harvard Inn (Waller, p.27). In 1918, Capone married a woman of Irish background. Then in the early part of 1919, Al Capone moved to Chicago with John Torrio to work for Torrio's uncle. Once Capone got his bootlegging business running he came in contact with his first

Eternal Sunshine of the Spotless Mind essays

Eternal Sunshine of the Spotless Mind essays Eternal Sunshine of the Spotless Mind As an entertainment medium the feature film has advanced exponentially over the last 150 years .The advent of sound and later color have made the feature film an ever more immersing experience. Now the dawning of the era of digitalisation and seemingly endless possibilities in the realm of computer special effects complicate the auteurs struggle to produce a successful film. They must break through mediocrity to achieve critical and public acclaim. Eternal Sunshine of the Spotless Mind is a successful film both critically praised and well received by the public although largely unnoticed in comparison to the mammoth of a Hollywood blockbuster. From what basis then shall one measure a film to be successful? Its merits as a piece of artistic expression or its popularity? Eternal Sunshine doesnt rely heavily on modern computer effects and rather opts to minimize computer usage in place of clever camera wizardry. Italian director Michel Gandrys vision involved the use of longer takes and an eccentric narrative straying from generic conventions. Joel and Clementines relationship is romantic film territory and the themes of memory and technology stock sci-fi staples. The appeal of most modern blockbusters lies in the overblown budget and photo-perfect special effects. A true example of style over substance, spectacle often distracts or takes prevalence to the quality of narrative. However with Eternal Sunshine Gondry holds the reigns of balance, managing to deliver a surrealistic cinematic delight while keeping his direction true to the requirements of the plot. Joel and Clementines relationship is still the focus of his movie and the dreamy world created by Joels memories doesnt diverge from but rather consolidates their fractured relationship through Joels interactions with Clem in his mind. His m...

Belief in People and Team Essay Example | Topics and Well Written Essays - 750 words - 1

Belief in People and Team - Essay Example As a leader, one realizes that one has to focus on that common interest to make sure that the organization functioned effectively. As Dr. Bennis has pointed out in his writings, it is essential that the leader create a sense of mission (ASAE Foundation, 2004). That is exactly what one did to keep the organization to a good start. The group started out by defining the mission and vision statements. One had to make sure that everyone in the organization believed in the objectives that were set. One knew that as the leader of the group, one has to rally them towards the attainment of the goals. The next step was to engage and motivate the members (ASAE Foundation, 2004). The problem that one faced is how to motivate each one of them. One realized that to be able to motivate them it is essential that one gets acquainted with each individual and uncover what drives them into action. One has to recognize the strengths and weaknesses of each member to be able to assign them to jobs which wi ll put their talents and skills to their best use. This is a point which Dr. Bennis emphasized in his book, that is, a leader should determine the highest potential of each member (1994). One did this by letting each member fill out a questionnaire where they were asked their qualifications, interests, talents and hobbies. After going through the form, one got an idea which person may be appointed to do a certain duty. As a leader, one got to know his members better and identified the things that motivate them. Another unforgettable experience that one had about leading the organization was when one had to introduce changes in the previous system established by the past president. The past president required that each member report directly to him about the donations that were gathered for the projects of the group. One believed that the organization would function better if they were divided into groups which were

9.2 Essay Example | Topics and Well Written Essays - 500 words

9.2 - Essay Example Apart from this lack of orderliness, other mistakes can be easily corrected and then the work written to make a more cohesive and coherent document. Such an action of rearrangement will entail subdividing the paper into sections with clear subheadings. The focus of this paper is on why need-based scholarships should replace merit-based scholarships. Although this should be a thesis based argument or paper, what appears to be the thesis is unfortunately found in the third paragraph. It claims that the need-based scholarships will increase access to education for students from low income and minority families which will eventually increase the gap between the rich and poor. Apart from the heading that gives a hint of what the paper is about, it is not until the third paragraph that one starts to get an idea of what the paper is talking about. There are no sections and what the paper does is to provide reasons that support the thesis without giving clear indications on what perspective the reasons are based. The subject matter of the paper has been explained thoroughly through supportive ideas but it has not been subdivided into sections. In terms of argument, the article has adopted argument by authority whereby it closely follows ideas of others although in many instances it fails to quote the originators of the ideas. Many of the arguments are well thought and logical which make the overall reasoning of the paper very strong. As such, there are no hasty generalizations and supporting ideas are well balanced and thought out. Generally, the introduction and conclusion have not been well done. The introduction lacks the thesis statement owing to the fact that the first paragraph is always considered the introductory paragraph where the thesis is usually located. On the part of the conclusion, there is no special technique applied and it should have summarized the main points of the paper besides re-stating the

Human Resource Management Skills Essay Example | Topics and Well Written Essays - 2000 words

Human Resource Management Skills - Essay Example Human resource management is a vital part of any organization. To be more effective, a human resource team needs to be experts in a number of important sections in an organization. That is, the HR department is responsible for diverse aspects of each employees career, starting with recruitment to hiring to various sections of their job while employed in a particular organization. An effective human resource department effectively executes the policies and procedures and thus ensuring that the employees in an organization are properly motivated. The study is going to view various skills and techniques that one will need to effectively lead the human resource department in an organization. In my research, I prefer that the operation of the human resource department be conducted in one central point to ensure that there is proper coordination of activities from one functional level to another (Martin, 2009). Despite the fact that human resource functions are broad, the management will e nsure that it adequately delegates duties and responsibilities to ensure that the department meets its set goals within the periods. In this study, I am going to major on various aspects in human resource department. For instance, the study will have to capture on the merits of carrying out human resource functions in one central point other than conducting it at a functional level. Moreover, the study will give a detailed explanation of various skills and techniques that a human resource manager, as well as the entire department, should have to run the organization more effectively (Lohman, 2002). I am going to discuss the skills of training and development skills, management skills, communication skills as well as discrete and ethical techniques that a human resource officer in an organization should have for effective operations. Moreover, the study will analyze the ability of HR department in policy formulation and implementation as well strategic planning skills and techniques.

Economic insight into the baby disposable diaper industry

Economic insight into the baby disposable diaper industry The disposable diaper, an invention that revolutionized the baby care industry exists today as a practical solution to the problem of dirty, smelly, wet baby bottoms throughout the world. The need for diapers has always existed. There are several documents from the past that refer to the use of milkweed leaf wraps, animal skins and other creative natural resources to serve the need, a far cry from todays disposable diapers [citation]. Proctor Gamble commercialized the disposable diaper business by introducing Pampers in the year 1961 [citation]. Since then, the industry has witnessed remarkable magnitude of development and one of the reasons disposable diapers are enjoying overwhelming popularity is due to the rising number of working mothers in the society [citation]. The volume of growth is also closely co-related to the level of birth-rate, and owing to its rising trend there lay great potential in the coming years [citation]. The baby disposable diaper industry is poised to take advantage of this growth and thereby to realise its potential this paper will try to highlight some of the key propositions for a keen investor so as to assist him/her gain a comprehensive overview of the market from the logistics perspective. To provide one with factual insights, the report has sketched a detailed schematic for the city of Dunedin (New Zealand) and tries to serve details of the current market scenario, potential and other practical considerations. However the report holds high level of generalisability and similar settings can later be applied to other regional markets. Please note that the estimations made are based on calculative judgements and are not totally accurate. Target Market The duration for which children may rely on diapers depends on how fast they pass their potty training. There is a high level of diversity across the globe, where Americans take the longest to learn, around 34 months [citation]. Babies in China and Russia probably are the best examples who learn in less than 20 months [citation]. The rest of the world is somewhere in the middle. A good estimate should be around 30 months, i.e. 2.5 years. Therefore, children within the age bracket 0-2.5 form the end consumers. However the purchase decisions are undertaken by the parents who form the target consumers. Market Potential The market potential of the disposable diaper market relies on the estimation of absolute demand. The first step towards this estimation is to calculate number for children lying within the age bracket of 0-2.5 years. The next census figures for New Zealand will be released in 2011, and using statistical data for the year 2006 would prove obsolete. However NZ Stats does provide with real time figures for the entire country. To derive recent figures for the required age group, proportionate increase in total population of New Zealand from the year 2006 to 2010 was calculated, which stood around 8.7% [citation]. This increase was then added to the 2006 census for Dunedin. From the total population of the city, number of children within the age of 2.5 years was 2.5% of the total population [citation]. This gave us a final figure of 3,225. The second step was to calculate the diaper consumption for each life stage and arriving to an average number of diapers used during the entire life o f the child. As per Absormex data index, a new born infant consumers around 6.82 diapers per day, whereas two year olds use 3.74 per day [citation]. Therefore at an average a baby consumes around 5.2 diapers per day. Thus the daily consumption is derived by multiplying the total number of babies with the average daily consumption. As consumption can be equated to the market demand, the absolute maximum demand for the city approximately stands around 16,770 diapers per day. The market potential is the maximum demand for the market, which assumes if all babies use disposable diapers. But this is certainly not the case. Thus one has to consider the market penetration to arrive to the actual demand potential. As per Richer Investment consultants, diaper purchase triggers at around $3,500 USD of Purchasing Power Parity (PPP) per year which equates to around $ 4,700 NZD [citation]. In Dunedin, 83% of the population earn an annual income of more than $ 5000 [citation]. Thus this gives us a demand potential of around 14,000 disposable diapers per day. Inventory Planning and Warehousing Owing to a long shelf life and high volume, inventory planning for disposable diapers can turn into a perplexing job. This is because both the characteristics contradict each other to arrive to an optimum stock. Technically, disposable diapers do not have an expiry date [citation]. But they do turn pale after the duration of eighteen months [citation]. Nonetheless, they still possess a comparatively longer shelf life than most of the FMCG products. Thereby the seller can gain an opportunity of lowering the cost by stocking large quantity of goods. However disposable diapers, owing to their fluffiness take up larger shelf space and stocking large inventory could be quite expensive. To answer this dilemma, one has to take into consideration the low value of the product and quicker technological innovations. In the inventory cost, the cost of storage remains flat regardless of the type of the product. In the case of diapers, a pack of forty four in New Zealand costs around $ 28, giving us a per unit price of 60 cents, which is quite high in comparison to the shelf space it takes up. Moreover, observing the technological trend in the diaper industry, a new innovation is introduced every three months. Therefore, storing goods more than three months would lead to stock obsolesce. Therefore one needs to carefully plan out the inventory considering all the above mentioned factors. Diapers are available in different sizes, and one has to also consider the proportions of different sizes to be held in the right quantity. Disposable diapers are available in 6 sizes, from 1 to 6. Small infant consumer size 1-2 and two year olds use size 5-6. The level of consumption for different sizes is indirectly correlated to the age of the children, i.e. small infants consume higher quantity of smaller sized diapers as compared to the bigger sized diapers consumed by two year olds. To estimate the proportion of different sizes to be stocked, we can make use of the Absormex consumption figures aforementioned. For medium sized diapers (size 3-4), we would assume that its consumption is equal to the average of the small and large sizes, i.e. 5.20 per day. Thus, the total inventory would be composed of 43%, 33% and 24% of sizes 1-2, 3-4, and 5-6 respectively. Distribution Channels Supermarkets and pharmacy shops are the two primary retail distribution channels for disposable diaper. Hospitals with maternity wards do serve as a secondary channel for catering the diaper needs for new born infants. Supermarkets Chains: Supermarkets are the most generic channel to reach the customers. As per Timmons survey, almost 41% of the total stock flows through supermarkets [citation]. In Dunedin there are 18 major supermarkets [citation]. Major concentration of these stores is observed around Dunedin Central and mainly across Roslyn, Saint Clair, Caversham, Port Chalmers and Mornington. Pharmacy Shops: Pharmaceutical outlets also serve as a channel for retail distribution, though not as important as supermarkets, owing to the lower frequency of customer visits and lower foot traffic. As per Timmons survey they contribute around 18% of the total sales [citation]. However, the clustering of pharmacy shops is identical to that observed for supermarkets aswell. Hospitals: Hospitals act as a tertiary distribution channel which caters the needs of the new born infants after their immediate birth. In Dunedin, there are 16 main hospitals, out of which 11 have maternity wards [citation]. However as they only cater the needs of infants hence would only require small sizes of 1-2. To estimate the number of diapers required by the hospitals, one has all the required figures. As per breathingearth.net, a baby is born every 8.9 minutes in New Zealand, which gives us a national figure of 162 births per day. The proportional birth rate for Dunedin comes to around 5 babies per day. These babies are held in the hospital for two days where they required 6.82 diaper changes per day. Thus a baby needs a diaper change every every 3.5 hours. Thus gives us a total consumption for hospital of around 35 diapers per day. Therefore the requirement is marginal as compared to the aforementioned distribution channels. Alternative Channels of Distribution A distribution channel can be feasible if is able to suffice the benefits with its costs. In the case of disposable diapers, the product holds absolute sense if one proposes to avail it via online channels. On the first place, the popularity of diapers is purely driven by the level of convenience it avails to the working parents for whom time is of essential value. Therefore, home delivery would enhance its level of convenience. Moreover, it is a functional product which does not require personal inspection before every purchase. However the channel would only be justified it is able to provide the product at least in par with retail prices or lower. These could be justified by the savings created after cut shorting the profits of the retailer along with other related costs for availing the product on retail shelves. Thus higher savings would enable feasibility of the channel from sellers perspective as well. Procurement and Distribution Globally centralised manufacturing centres serve benefits of reduction in costs through economies of scale, given that the high logistics and transportation costs are sufficed with the profit margins of the goods. In the case of disposable diapers, it is highly unlikely to support the structure for a centralised manufacturing plant owing to the low value and high volume of the product. Therefore diaper manufacturers maintain regional manufacturing units. For the region of Oceania, prominent enterprises such as Kimberley Clark and Proctor Gamble have their diaper manufacturing facilities primarily located in Australia, whereby the national distribution centres for New Zealand are situated in Auckland and Christchurch. Procurement from Christchurch via railway would prove feasible cost wise, unless if the national distributors agree to cover the road transportation costs, which is less likely. Proximity would lead to shorter transit duration, which in this case would be approximately 11 hours, eventually lowering the lead time. The losses related to out of stock situation for diaper brands are is reasonably high. It is highly likely that the consumer would pick up the competitors product due to the product high level of substitution. Moreover, the functionality of the product remains flat across different brands. Therefore in the case of several out of stock situation; the customer might eventually switch brands. The ultimate solution to this problem is to reduce the lead time by holding stock as close as possible to the retail channels. This would require holding distribution centres at district level. In Dunedin, majority of the retail outlets including hospitals are clustered around the Octagon, Great King St. North, St. Clair, and Mornington, which are situated in the Central, North, South and East portion of the city respectively. West portion of the city is scarcely populated, hence not taken into consideration. Taking into account the rent for holding a centralised distribution facility near the railway station, which falls into Dunedin CBD, it would be rather cheaper to hold three smaller centres across the north, south and east portions of the city. Northern and Central portions of the city hold approximately 40% of the total population [citation], whereas the rest of the population is more or less distributed equally around the Southern and Western portions of the city [citation]. As consumption is directly related to the volume of population, a comparatively larger the distribution centre can be held in North Dunedin (Great King St. North). As this centre would be closest to the Central portions of the city, it would suffice the needs for this portion as well. The other two centres can be held in Western and Southern zones of the district. Therefore proximity to remote distribution centres from the retail locations would serve cheaper transportation costs, shorter delivery and lead time. Stock Allocation and Replenishment Two aspects are to be considered for stock allocation, one is distributing to different channels and the second is geographical allocation. Both the aspects are dependent on the frequency of purchase. This again directly co-relates to the level of population. Considering the population of Dunedin, around 40% are concentrated in the Central and Northern portions of the city where as the rest is equally concentrated in the Western and Southern portions of the city. The Eastern portion of the city is not considered due to habitat scarcity. Therefore the stock would be allocated keeping into consideration the same proportion of the population residing at the different parts of the city. It is observed that parents of smaller infants are less price sensitive as compared to those of grown up babies [citation]. Therefore marking smaller size diapers at a slightly higher price wont bring would only affect the demand in a comparatively smaller correlation. Moreover a higher demand of the smaller size as compared to the larger one can further benefit the suppliers to buy in bulk and sell to the retailers. Therefore would serve cost benefits from purchase as well as sale. [Replenishment] Overcoming Demand Fluctuation The supply chain for disposable diapers can be a victim of the bullwhip effect, which can be caused by minimal information sharing between the channel members where irregular purchase patterns exist. Considering the actual market scenario; parents who buy disposable diapers already anticipate that their baby would require diapers in the coming weeks. Therefore they do not buy in single packs, but in multiples to save on large quantities. However, this can lead to apparent delay in subsequent purchase occasions. This is because they do not possess accurate consumption estimates and can lead to fluctuations in purchase patterns, eventually leading to increase in demand volatility. The supermarkets stores at which they buy these products order by the pallet size or even truck load, and again at varying frequencies. Moreover the wholesalers will also be ordering according to their own re-order level policies. The combined effect of all this could create volatile picture of demand by the time this distorted picture is received at the diaper factory. To overcome these inefficiencies the one has to make sure to ensure transparency between the retail channels and can strongly count on efficient consumer response. Instead of having to anticipate requirements on the basis of personal forecasts, it should be demand driven. For which the supplier has to rely on retailers sales figures rather than his own personal forecasts to place orders to the national suppliers. It can be made sure that one own figures also get passed on to the channel members closer to the manufacturers. This is to give out a clear demand picture to the manufacturer who can further utilize this for making efficient use of resources. Manufacturers efficiency highly impacts the profit margins, sales figures, and above all the very existence of channel members. Thus with the achievement of better use of production and transportation capacity, all the members in the supply chain can respond efficiently to demand fluctuations along with saving on working capital. Technological Considerations RFID (Radio Frequency Identification) has been a technological breakthrough in the field of logistics. It serves the seller with an array of information which him gain deep insights, far beyond the conventional bar code technology. The question is whether the diaper industry can make use of this technology to reap greater benefits. Considering the costs, a single tag costs around 10-15 cents (USD), which converts to around 20 cents in New Zealand Currency [citation]. Incorporating the technology does not support the cost and profit structure in case of disposable diapers. Moreover the cost of the tag is just around 65% of the total cost, whereas the rest is comprised of infrastructure to support the technology in the supply chain. Therefore would add up to a total cost of approximately 30 cents per unit which remains constant across all the packing sizes. Operating in thin profits, 30 cents would not support the profit margins nor would serve the benefits in the scarcely populated co untry of New Zealand. Conclusion Diapers were introduced in the 1960, since then they have undergone tremendous number of innovations. It might look simple, but its an technological achievement, where a single diaper of today has over 200 patents. On top of this, it keeps getting modified with superficial upgradations such as fasteners, size of the pads, colour patterns, and even liner material. But the core appeal of diapers is still its convenience. This is of utmost importance to todays working mothers. Made from non-degradable plastic, disposable diapers reduce the task of washing cloth diapers. Plastic is by far the most expensive component of disposable diapers. The higher shelf life is highly responsible for the durability of this plastic used in diapers, which is resistant to heat, weather and other environmental concerns. This is where the problem lies, they cannot be broken down by sunlight nor natural deterioration works for them, eventually turning it into a non-degradable waste. In todays highly environmental sensitive society, the unfriendliness of diapers towards the environment is creating a big issue towards its preference and sale. The whole structure might fall apart if this issue is taken seriously. However, major efforts have been undertaken to introduce molecular structures in the plastic paper used in diapers to cause it to disintegrate upon extended environmental elements. This development highly potent in changing the perception towards disposable diapers and how it is viewed by the consumers.

John Dewey Essay example -- American Philosopher Philosophy

John Dewey was one of the greatest minds in history. A philosopher, his concern was democracy and its ideals. A thinker about the problems in education. A prominent voice in America, commanding the admiration of those who agreed with his views, and respect for his mind even from those who did not. The man: John Dewey, an American philosopher. Dewey’s pedagogy was one with three distinctive traits: it was democratic in that it called for pluralism. It was a follower of the scientific method in that it was a systemic approach at solving problems and forming judgments, both practical and moral. It prized directed experience as an ongoing process of means as ends and ends as means. These three traits of Dewey’s philosophy are tied to all that he wrote and thought. Dewey felt that democracy was the ideal social structure, the one best suited to the needs and aims of all people; under no other political scheme was it possible for general citizens to have allowance and responsibility to grow individually and culturally. All other systems hindered personal and social growth in Dewey’s scheme. Any form of despotic state used fear to such an extent that it became one of the only factors that kept the state in union, and the other factors that would naturally cause people to work together in their social environments were perverted and wasted. â€Å"Instead of operating on their own account they are reduced to mere servants of attaining pleasure and avoiding pain† (DE, 84). The cultural paralysis was seen in the fact that â€Å"there is no free play back and forth among the members of the social group. Stimulation and response are exceedingly one-sided.† Both the rich and poor suffer: the poor in that they have little involvement in the courses taken in their lives; the rich in that their â€Å"culture becomes sterile† (DE, 84). Dewey asserted that â€Å"democracy has always been allied with humanism, with faith in the potentials of human nature† and that â€Å"democracy means the belief that humanistic culture should prevail.† He advised that democracy is not something that will necessarily happen if â€Å"human nature is left to itself, when freed from external arbitrary restriction† (FC, 97). Democracy, for Dewey, was a moral issue that required efforts born in democratic vision. Democracy was Dewey’s tool of progress. But Dewey also saw that democracy did not guarantee progress. The imper... ...nt. Otherwise facts gained only have the potential to gain meaning, and many facts will turn out to be disconnected, never finding their place in a person’s experience. Facts grow naturally out of meaningful experience, but meaningful experience which leads to more facts do not necessarily flow from facts. Dewey wrote that â€Å"the tragic weakness of the present school is that it endeavors to prepare future members of the social order in a medium in which the conditions of the social spirit are eminently wanting† (SSCC, 15). The conditions wanting were democracy, rational judgment conducive of the scientific method, and a conception of experience that recognizes the continuous nature of ends as means of further action. What Dewey wanted was ideal, but it was not utopian. He knew that we should do better, that we could do better. The question was more whether there was a will to do better. References Dewey, John. 1944. Democracy and Education (DE). New York: The Free Press. Dewey, John. 1989. Freedom and Culture (FC). Buffalo: Prometheus Books. Dewey, John. 1964. The School and Society and The Child and the Curriculum (SSCC). Chicago: The University of Chicago Press.

Chemistry IA design format Essay

1.0.0- Introduction 1.0.1- Focus Question- If the mass of magnesium reacted with hydrochloric acid is changed will the temperature of the solution increase and the total mass decrease. 1.0.2- Hypothesis- If the mass of magnesium that is reacted with hydrochloric acid is changed the temperature of the solution will increase and the total mass will decrease. 1.0.3- Theory- The reaction between magnesium and hydrochloric reaction is written as follows, Mg(s)+ 2HCL (aq)—— (MgCl2(aq)+H2 (g) (Ng, 2008, pg 1). This reaction goes through two distinct changes that both have an effect on the energy change in the reaction. Enthalpy refers to changes in energy in a compound (Assut, 2008, pg 1). Two distinct changes can occur. An endothermic change occurs when the energy being absorbed is grater then the energy being released whereas and exothermic change is when the energy being released is greater than the energy being absorbed. Energy is absorbed when bonds are broken and energy is released when they are formed (Newton, 2008, pg1). Energy change cannot be directly measured. However energy change affects the physical force of heat. Therefore a heat change is indicative of an energy change. If the heat increase in the solution the change will be exothermic and if the heat decreases the reaction will be endothermic. In respects to the formula Magnesium forms an ionic bond with chlorine to form the salt magnesium chloride. When this bond is formed energy is released in the form of an endothermic change, this energy drop would be quite small however because the bond is ionic and does not take much energy to create since magnesium and chorine bond easily. However the second change is that hydrogen breaks off from chlorine in the hydrochloric acid and hydrogen is released as a gas. The breaking of bonds would absorb energy therefore forming an exothermic reaction. Hydrogen and chorine however form a very strong covalent bond. Covalent bonds form between atoms with similar electronegative forces and are there for take a lot of energy to break ( Anissimov, 2008, pg 1) Since the endothermic change is weak and the exothermic change is strong it can be predicted that the overall change will be exothermic and therefore the solution will heat up. Temperature change in a chemical reaction can be measured with a device known as a calorimeter. A calorimeter measures the heat of the solution before the reaction has occurred and then again after the reactant has been added (Whel, 2008, pg 1). These two values can be mathematically manipulated to find the relative change in temperature. If two of the same substance have different masses it means there is more of the one substance. In a mass of a substance there is a certain amount of material that can be reacted. By increasing mass the amount of substance that may be reacted increases. Therefore if mass increased the amount that of substance reacted will increase as well providing there is enough of the reactant. This will in turn increase the energy change. Also if more of the substance reacts with the reactant more of the reactant will be used up. This means that if the magnesium is increased there will be more reaction with hydrochloric acid; this means that more hydrogen will be released as gas and the total mass of the solution will decrease. Henceforth the change in heat should be greater if their entire solution is lighter as more of the hydrochloric acid has been reacted and hydrogen lost as a gas. How the reaction works (Figure 1) Mg(s)+ 2HCL (aq)—— (MgCl2(aq)+H2 (g) 1.1.0- Controlling variables 1.1.1- Variables (Table 1) Variable Type of variable Method for control Mass of magnesium Independent Mass will change for each sample, sample range will be 2g, 4g, 6g, 8g and 10g Heat change Dependent This will be calculated by subtracting the final heat of the solution by the initial heat of the solution. The data will be gathered by using a calorimeter Change in mass in solution Dependent This will be calculated by measuring the weight of the solution and subtracting the weight of the calorimeter and the magnesium. The original mass not including calorimeter and the magnesium will then be subtracted by this value to mind the change of mass in the solution. Initial temperature Controlled The temperature of the solution will be heated to 25c and the reaction started immediately. External temperature Controlled The room temperature will be controlled at 24c Volume of hydrochloric acid Controlled The volume of hydrochloric acid will be 40mls per sample. Measuring apparatus Controlled A 50ml calorimeter with electronic thermometer and a scale with milligram accuracy. Time of experiment Controlled The experiment will be ended when reaction is fully complete and reaction will be given 10 seconds to calibrate before results are taken Replications Controlled Standard 5 replications of each sample will be performed. 1.1.2- Control used in comparison- The reacted samples will be compared against hydrochloric acid with no magnesium that is also 25 degrees Celsius. Since the temperature remains constant there should be no energy or mass change, this would mean that on a graph this would represent a straight line which others samples with energy changes (heat changes) could be compared to. – Bibliography Ng, H.N, 2008, Acid reactions, Vat.Gov.Un, Accessed 21/08/09, http://vat.maharashtra.gov.in/communicationcenter/QueryAnswerSubjectwise.php?start=3090&subId=0000000007. Asset, M.A, 2008, Chemical Enthalpy, Nasa.gov, Accessed 21/08/09, http://www.grc.nasa.gov/WWW/K-12/airplane/enthalpy.html Newton, R.N, 2008, Energetics and bonding, Unknown sponsor, Accessed 21/08/09, http://www.webchem.net/notes/how_far/enthalpy/enthalpy_diagrams.htm Anissimov, T.A, 2007 Chemical bonding, Simon Frasier University, Accessed 21/08/09, http://www.chem1.com/acad/webtext/chembond/ Whel, L.W, 2006, Calorimeters, Stanford University, Accessed 21/08/09, http://www2.slac.stanford.edu/vvc/detectors/calorimeters.html Acknowledgments The procedure of this experiment is a adaption of a previous class experiment. The source of the procedure is unknown, so thanks to Miss Crook for the inspirations for this design.

Web 2.0 Platform Facebook

Web 2.0 Platform Facebook The Internet has made the world to become a small place because it provides a platform for people to interact and do business. There are so many websites that have been developed for purposes of interconnecting people using Web 2.0 technology, and they include Facebook, Twitter, and MySpace, among several others.Advertising We will write a custom essay sample on Web 2.0 Platform: Facebook specifically for you for only $16.05 $11/page Learn More Facebook is the most popular social networking site, and this is evidenced by the number of users that continue to increase every day. When in Facebook one can find a friend, job and many other things. Therefore, this paper focuses on how Facebook has influenced people’s lives. Importance of Facebook Almost everyone is talking about Facebook because on this site one can trace his/her childhood friends and get new ones. Popoola (2011) argues that the main reason why many people prefer to use this social media to communicate is because it is cheap and convenient. This is because Facebook is not like mobile phones that require to credit, which is perceived to be very costly. In fact, all that one need is a computer that is connected to the Internet or an Internet enabled mobile phone. The popularity of this social network has made many people to seek for literacy in the use of computers because everyone, whether old or young, wants to move as the world moves. Anderson (2007) explains that before the coming of social networking sites such as Facebook, people used to communicate through the mobile phones and letters, which were very expensive and unreliable. Facebook provides information about people by displaying individual details of every user, which is useful for security purposes. When on Facebook, one befriends the people he/she likes by looking at their profile information, but then the person that is being requested for friendship has to confirm that he/she is known to the person makin g the request.Advertising Looking for essay on communication strategies? Let's see if we can help you! Get your first paper with 15% OFF Learn More Communication is made possible on Facebook through an electronic mailing service that allows users to send and receive messages. Alternatively, users can chat in real-time through a chat utility integrated in Facebook. According to Bronk (2008), Facebook has helped to retain their friends, unlike before when many friendships ended as people went their different ways after going through the education system. On Facebook, people are not required to meet physically because they can interact virtually, just like they would if they were in close vicinity. Friendships are based on interests and this has led to the rise of cross cultural interactions. In such a case, interaction is not biased because the users can befriend anyone regardless of race or gender. Uses of Facebook Facebook is informative because users are abl e to update one another on what is happening in different parts of the world. Many users are using the platform to express themselves through the status updates that are posted regularly. For instance, activists have continued to use Facebook to express their grievances. In countries like Egypt, the government disabled the Internet because the revolution against the government was perceived to be coordinated through Facebook. By barring people from accessing the Internet, the Egyptian government was able to control the revolution, but that was not enough. This is because the stage for protesting against the government was already set. Politicians too have changed the way they conduct their campaigns. This is because holding political rallies has many disadvantages: they could be met with a lot of hostility, and the amount of money spent on fueling their vehicles is extremely expensive (Fox, 2009). Politicians have therefore embraced Facebook by staging their campaigns on the site be cause they are assured that their message will reach many people and will not be blocked in anyway. Once a user has posted something on the wall, it cannot be manipulated in anyway like in the posters that can easily be tainted or torn into pieces.Advertising We will write a custom essay sample on Web 2.0 Platform: Facebook specifically for you for only $16.05 $11/page Learn More But this has not hindered politicians from holding rallies on the ground because by having alternatives of reaching their target audience their chances of success become broadened. In essence, Facebook is a useful tool especially to political aspirants who do not have all the money to go around. Business people and companies also benefit from the capability of Facebook. For anyone who wishes to market his/her goods and services, Facebook is the ideal platform for advertising. This is because it is cheap and efficient, unlike other methods of marketing. Facebook has many users who r eside in various parts of the world, and it is ideal for companies that wish to expand their businesses. Greenstein (2009) argues that the popularity of Facebook has made many companies to include a link to the site in their websites. In addition, there are many companies that advertise their jobs through Facebook and thus, it is a useful tool for jobseekers and employers. Most companies use the site to conduct surveys about their products and services. This is cost effective because it would be very expensive to hire another party to conduct the survey. Moreover, the awards that are issued nowadays are influenced on the polls that take place on the social network. Facebook has become a tool in decision making processes in most companies. This is because there are many employees who have been sacked because of the comments they posted on Facebook. Hawkins (n.d.) states that employers use social networking sites to track what their employees are doing and that way they are able to te ll about the personality of their employees. There are some employers who argue that Facebook has been contributing to their company’s decline in performance. They further explain that their employees sneak into the social network and leave their duties unattended.Advertising Looking for essay on communication strategies? Let's see if we can help you! Get your first paper with 15% OFF Learn More Moreover, Facebook is identified as one element that fosters unity in today’s world. This is because people are able to communicate from different parts of the world without the barrier of their cultural differences. Perhaps this is because Facebook allows people to communicate in their interactive languages, thus eliminating the problem of language barrier the users are only present virtually and none of the communicating parties can identify any weaknesses in the other person, and judgments can only be made by the comments one posts on the wall. Similarly, Facebook has enabled many people to find marriage partners. According to Lecky-Thompson (2009) there are so many people who are in successful marriages, owing to their interactions on Facebook. However, there are many marriages that have been ruined by this social site. This is because most couples fight and argue about the comments made by one of them, especially towards opposite sex. The only problem here is that someo ne can put somebody else’s picture and thus, hide their image. Criticism A major drawback of Facebook is that it is difficult to understand someone’s character while interacting with them on the social network. There are also criminals who use the site to trap unsuspecting users and later holding them as hostages and sometimes end up killing them. However, people are encouraged to meet strangers in public places to know the person much more. Facebook enables users to establish their own social circles called groups. These groups are formed by people who share common interests such assisting each other in the time of need (Lecky-Thompson, 2009). The children are also affected by Facebook, and this has caused their performance in school to decline. Most teachers are complaining about Facebook because they say that learners have become obsessed with it such that they finish their homework in a rush, just to please the teacher. Children are now spending most of their time chatting with their friends on the social network such that they don not have time to play constructive games like soccer, which plays a major role in making them creative and discovering their talents early enough. However, to others, Facebook is their source of consolation because when they are annoyed, they pour it out on the network. There are many people who pass their time by just chatting or playing games on the site for the sake of avoiding boredom. Siegler (2009) argues that the emergence of social networking sites such as Facebook is trying to bring the world together in an effort to seal the gap that was left by modernization where everyone had to go his way in search of livelihood. Today everyone belongs to a social network because they are many and one can join and leave at their own pleasure. It is surprising to find that everyone is busy such that even parents don not have time for their children and some use the social network to interact with their children while th ey are away from home. This is much better than having no time at all. Likewise, smart teachers make good use of Facebook to communicate with their learners about the lessons that require detailed explanations. Some even go a step ahead to post the assignment on the site. Sometimes, professionals use Facebook to share information, which makes their work easier because when they are more knowledgeable they can solve issues much faster. Since most people are obsessed with Facebook, they are not able to work on their interpersonal skills on face-face basis. This is because Facebook enables people to express themselves without feeling ashamed, which is beneficial to poor communicators. Conclusion Currently, Facebook is the most popular social networking site that uses Web 2.0 technology, and is useful in creating awareness. The site is used frequently as an exhibit of crime where some people were found on the wrong side of the law, such as displaying explicit pictures. In some countries the site is used to spread hate speech among ethnic communities. In such a case the government of the concerned country has had to monitor the statements posted on the site so that situations leading to civil unrest can be avoided. Similarly, there has been a problem of hackers who manipulate users profile and pose as those individuals. However, Facebook management has put safety measures in place so that the details that can be accessed by a user are limited according to specifications of the user. References Anderson, T. (2007). Web 2.0 and New Media Definitions. NewCommBiz.com. Retrieved from newcommbiz.com/web-20-and-new-media-definitions/ Bronk, C. (2008, April 2). Convergence and Connectivity: 1 of 2. YouTube. Podcast retrieved from https://www.youtube.com/ Fox, P. (2009). Friends and Neighbors. Guardian.co.uk. Retrieved from guardian.co.uk/society/joepublic/2009/feb/03/communities-social-networking Greenstein, H. (2009). Facebook pages vs Facebook groups: What’s the D ifference? Retrieved from http://mashable.com/2009/05/27/facebook-page-vs-group/ Hawkins, K. (n.d.). What is a Social Networking Site? Retrieved from wisegeek.com/what-is-a-social-networking-site.htm Lecky-Thompson, G. (2009). Facebook: Good or Bad for Communication. Retrieved from suite101.com/content/facebook-good-or-bad-for-communication-a121387 Popoola, J. (2011). What are the Effects of Social Networking Websites? Ezine Articles. Retrieved from http://ezinearticles.com/?What-Are-the-Effects-of-Social-Networking-Websites?id=1030141 Siegler, M. (2009). Location is the Missing link between Social Networks and the Real World. Retrieved from http://techcrunch.com/2009/11/18/location-is-the-missing-link-between-social-networks-and-the-real-world/