Nursing care plan Essay Example | Topics and Well Written Essays - 2000 words

Nursing care plan - Essay Example de his difficulty in mobility (immobility) that was caused by the number of amputations that he has had due to his Diabetes Mellitus condition have been addressed through relevant literature as well as decision making theories. Moreover, the Corbett model of narrative development has also been discussed to find its significance with regard to the decision making theory discussed. Lastly, the matter of confidentiality has also been addressed through the NMC’s Code of Conduct (2008). In the month of September 2011, Mr. Tan a 55 year old Chinese man was admitted to a residential home for his fifth time leg amputation. The residential home catered for personalized home care to Mr. Tan. As such, the amputation was as a result of a Diabetes Mellitus condition that he had acquired some time back. Before he was initially admitted at the residential home, some information related to his work and family was needed from him. Hence, it was recorded that he had previously retired from work and he lived with his wife only since his children were all grown up and they had moved out of their home. As such, when he was admitted, he was re-assessed holistically since his condition had deteriorated with the intention of determining his optimal nursing care plan and also the updated and/ or relevant plan of care to suit his needs. Mr. Tan had to undergo holistic nursing so as to not only assist him in his amputation process but also to assist in his general health condition. The RL and T model (Roper et al., 1996) was selected since it specifies the daily activities also known as ADLs or ALs that are to be focussed on while engaging in holistic nursing. Examples of ADLs include: communication; breathing; washing and dressing; sleeping; eating and drinking; maintaining a safe environment; elimination and mobilization (Cardinal Stritch University, 2014; 2013; Roper et al., 1996). As such, the model provides the assessment plan for Mr. Tan since during his pre admission information

E-commerce And Marketing Coursework Example | Topics and Well Written Essays - 2000 words

E-commerce And Marketing - Coursework Example ling goods and services may prefer internet services in marketing and doing economic transaction with other businesses or to customers because of its efficient and effectiveness to the consumers or the suppliers. E-commerce and marketing have played an important role in marketing and promoting businesses throughout the world through websites namely Facebook, blogs, YouTube and twitter etc. this social media websites provides opportunity to connect and to communicate with customers all over the world on a more personalized. This report also tries to evaluate how marketing and e-commerce websites for companies provides viewers with fresh and updated information about new products, innovations, offers and programs that the company is undertaking at any moment (Dholakia, Nikhilesh). This provision of current and updated data to viewers encourages clients to visit the Company’s website, which results into increased sales and advice the company of any changes to be made to the produ ct or to the services for their satisfaction. When marketing services or products, a company must ensure that there is production and purchase of products and services at the right time by the consumers. These products must meet and deliver the required quality standards and performance specifications for the customers’ satisfaction that might be done through internet. In this process, companies must ensure it has sufficient stock that meets the demands of the customers. In addition, the products must reach the customers in a timely manner and a perfect condition. However the e-commerce and marketing process will enable the company to interact with customers and improves their satisfaction, as it establishes clear business strategy and process. The company does this by ensuring that it meets... This report stresses that E-commerce and marketing have had an important impact in Business-to-Business, Consumer to Consumer and Business-to-Consumer models of electronic commerce. Also the media is one of the key determinants of the purchasing decision of the present consumer. Consumers in the present society will want to look for information about a product or service from any available source that appears to be reliable. For many consumers, the media appears as one of the independent and reliable in situations that can offer information to the public without bias. Unfortunately, some media companies have taken advantage of the trust that consumers have bestowed on them, to manipulate the consumer into purchasing products and services unwillingly. This paper makes a conclusion that the media companies achieve this by delivering faulty information on the real identity of the products and services to the target market. E- Commerce is necessary to a business since it helps in spreading information from one person worldwide. Through this business have greatly marketed themselves and increased profit since the negative and positive responses they get encourages them to develop or maintain the loyalty of the customers. The author of the essay recommends the company to redesign the website requirements by considering the preferences of users rather than the company requirements.Through this business have greatly marketed themselves and increased profit since the negative and positive responses they get encourages them to develop or maintain the loyalty of the customers.

Coursework Example | Topics and Well Written Essays - 500 words - 5

Coursework Example Illustration 1 above shows a Heron’s Fountain schematic drawing. Three major parts of the Heron’s fountain facilitate the functioning of the fountain. In the schematic diagram, there are three components referred as Basins A to C. Joining the basins together are vessels that allow air and fluid pressure to be transferred through. The connection of the parts as shown in illustration 1 show that the apparatus should make use of supporting mechanism in order to hold each component or part to the respective position. With respect to Basin B, the top of the component should be sealed off and then water is poured into the basin. Basin C is left empty and connection hose is hooked to join the two basins/vessels as illustrated in the figure above (illustration 1). Additionally, Basin A is placed above Basin B and a joining hose to Basin B is fitted connecting the two. Basin A and Basin C are connected as well using another hose as shown in the figure above. When water is poured into Basin A, it flows through the hose connecting Basin A with Basin C and collects in Basin C. When the water flows into C, air in C is replaced and hydrostatic pressure results (P2=rho gh2) adding to the primary atmospheric pressure (Patm) of C’s air volume. Following the flow of air from C as result of the Pascal’s principle and forces the water in vessel or Basin B to move up the hose connecting B with A. There is action and reaction between pressure exerted by the air and the primary atmospheric pressure leading to hydrostatic pressure (P1 = rho gh1). Air in basin B and C is compressed and drives the water to shoot from the upper basin thus resulting in a continuous movement of water to run the fountain (Brown, 2010). Heron’s Fountain considered various principles and concepts of physics. Among the most applicable are Pascal’s and Bernoulli’s principles. While Pascal’s principle explains the pressure changes as a

Interviewing for the Future Essay Example for Free

Interviewing for the Future Essay Interviewing is considered by many people to be an art. As an adolescent, I never had the chance to interview someone before and it really made me have to expose myself to the world outside of my comfort zone. Being only eighteen years old, I wanted to explore my future career path a little more in depth from somebody who knows the field. I chose to do my interview on someone I admired off campus who works in my field of interest. As a freshman in college, most students don’t know which direction they want to go in, most of them are undeclared. Upon entering CCSU this fall I, too, was undeclared; however, very recently I discovered that I wanted to work in the field of dentistry. I noted that I wanted to talk to an expert, somebody who had been in the field for many years so I could get a concrete grasp on what a day-in-the-life was like. I decided that I wanted to know more on the field and conducted an interview with Lyudmila Adamitskaya, a dental hygienist at Smiles for the Future a pediatric dentist office in Glastonbury, CT. Before I decided to conduct the actual interview, I did some basic background research on Smiles for the Future. I looked at their company website to get a sense of what the atmosphere was like. After I got the general idea of what the pediatric dentistry field was similar too, I brainstormed a variety of questions. I wanted to know what it was like for Lyudmila and what the work environment was like. I had already known quite a bit about the actual field itself, but I wanted to find out things about the pediatric dentistry field that a person couldn’t read about in Chemistry books or through Anatomy lectures. I wanted to discover why she liked her job and what she didn’t like about her job. I desired to know the obstacles she had to overcome and if her expectations were fulfilled from what she had perceived them to be while in college. At first I couldn’t find the right words to put down on paper prior to the interview. From the in class essay we read â€Å"The Art of Interviewing† I took away a central point that really stood out to me, â€Å"Substance is powerful to conduct a meaningful interview† (Foster 1). This quote really jumped off the page for me because it made me think that if I didn’t have the questions I wanted answered, then what was the point of even doing the interview? This point certainly got me to brainstorm for quite a long time to get the right questions. I took away another point from the essay, â€Å"If the interviewer already suspects what content is coming then why conduct the interview?† (Foster 1). This acknowledgement made me really concentrate on questions I could not possibly know the answers to, so that my interview would be meaningful to me and not just a waste of time. I knew that going into the interview, I was going to be nervous but I had no idea what was going to happen. On the afternoon of September 24th, 2012 I walked into the colorful pediatric office of Smiles for the Future in Glastonbury, CT. I anxiously waited until Mrs. Lyudmila Adamitskaya was finished with a small girl who looked as if she were around six or seven years old. I looked around at my surroundings and noticed many toys thrown about the waiting room. Normally, this wouldn’t bother me, I love working with children; however, today seemed different. I couldn’t place what it was that bothered me so much about this but I was abruptly pulled out of my dream-like state when Mrs. Adamitskaya greeted me with a warm and cheery â€Å"Hello!† The first thing I noticed about her was her bright purple scrubs. Her hair was neatly tied back and she had a professional, but friendly, demeanor about her. We shook hands briefly and she invited me to come to the back, into room six. She invited me to sit in the patient’s chair, which was significantly smaller than I was and we shared a brief ice-breaking laugh at the situation. She asked me how old I was and I told her I was eighteen and conducting the interview for my English class. I also told her how I was considering going into the field of pediatric dentistry. Immediately, I saw her face light up and I smiled at how much I could tell just from that simple body language she really enjoyed her job. I opened up the interview with the most basic question I could think of; what made you want to become a dental hygienist? She paused momentarily, trying to search for the right words, a puzzled yet relaxed expression on her face. Finally she stated with an enormous smile, â€Å"I always wanted to work in the medical field or dental field to make a difference in people’s oral and overall health† (Adamitskaya). Just that statement alone told me most of what I needed to know about Mrs. Adamitskaya’s attitude not only towards her patients, but towards all people. The statement told me that she genuinely cared how people were doing and she wanted to make a difference in the community. I nervously looked around the room at small stuffed animals and butterfly wallpaper and asked, â€Å"Do you like your work environment?† Mrs. Adamitskaya looked relieved and a little less under pressure. She quickly stepped back into the upbeat woman I first had seen and said, â€Å"I love my work environment because I get to work with amazing doctors and team members who dedicate their work and knowledge to improve and educate people about oral health† (Adamitskaya). This really perked my interest that she felt so strongly about the field and how much her doctors and co-workers cared for other patients as much as she did. I wanted to know more so I added â€Å"Do you like your job? What’s the best and worst part about your job?† She glanced around, looked at me and smiled. â€Å"I don’t like my job.† She paused, gave me a strange look and continued, â€Å"I love my job! I love it because everything we do is for our patients and it brings positive feedback. It encourages patients to keep coming back. It’s always rewarding to work with patients and make a difference in people’s lives and build relationships. The worst part would be the cost of health insurance for families† (Adamitskaya). I could sense she felt bad about the state of the economy, and briefly went on to discuss with me how â€Å"unfortunate it is that most families struggle to put food on the table at night while balancing family and school life† (Adamitskaya). When I saw how much this bothered her it made me eager to get more information on her personal background and struggles. I was nervous to ask at first, but my inner child’s curiosity got the best of me and I rather excitedly asked â€Å"What obstacles have you had to overcome to get where you are today?† She laughed a little; I’m assuming at how embarrassed I looked, I must’ve been a little flushed because my face felt hot as I waited for an answer. She proudly said, â€Å"Going through my college years, I didn’t speak English until I came to America when I was 22 years old. I was raising two children, working full time for minimum wage at Subway to put myself through school. I was trying to learn English and all the dynamics that go into a dental hygiene program at the same time. There were nights I didn’t sleep, but I did it all to provide a better future for my family† (Adamitskaya). It was at this point in the interview I really felt a huge personal connection with Mrs. Lyudmila Adamitskaya. I told her that I, myself, had been working two jobs and putting myself through college full time and she simply replied with a soft smile, â€Å"All hard work has rewards† (Adamitskaya). After this significant quote, Mrs. Adamitskaya wasn’t just another dental hygienist I was interviewing; she became somebody I truly admired. But I had to know if all that she worked for paid off for her and if in her heart her expectations were fulfilled. I asked, â€Å"Were your expectations fulfilled when you entered your career field from what you thought it would be like in college?† She eagerly answered very quickly, â€Å"Yes! They were fulfilled for certain. I am very pleased with what I have achieved over the last ten years of working as a dental hygienist† (Adamitskaya). When she said that her expectations were fulfilled, it somehow made me feel much more relaxed about the career path I had finally decided I wanted to go with. I then asked her what her opinion was on the industry in terms of job openings for after I completed college. She hesitated; looking almost worried, and said, â€Å"It’s easier to find a part time job rather than a full time position because of the economy, but it is an ever growing field and will always expand† (Adamitskaya). Her words had a way of relaxing me almost instantly. Mrs. Lyudmila Adamitskaya was definitely a woman who I would love to go back to for a second, third or even fourth interview with. She was extremely honest, kind and opened up her office doors to me in a very warm and friendly environment. I thanked her for meeting with me, shook her hand again and told her that I would love to meet with her again in the future to talk about dental hygiene and the wonderful world of pediatric dentistry. She laughed at my humor and said to â€Å"stay in school.† I walked back to my car with a newfound confidence in my ability to interview somebody. What I took away from this experience was not only how to interview a person I wanted to know more about, but how to go with the natural flow of conversation to fulfill my own curiosity. I had tons of questions lined up on paper, but I realized when I got back to my car that I hadn’t asked any of the basic questions I had written on the paper. I found that it was much more natural to talk from what I honestly wanted to know than from what I brainstormed in the midst of cramming all of my homework into one night. I learned that interviewing really isn’t as difficult as it had seemed before. It takes determination as well as a sense of confidence and curiosity in the subject to conduct a successful interview. Interviewing, from this experience, showed me that it’s not just about the answers, but how carefully the questions are tailored to how the person responds to a statement that is made. I learned that interviewing is truly an art form in itself. Work Cited Adamitskaya, Lyudmila. Personal Interview. 24 Sept, 2012. Foster, Linda. â€Å"The Art of Interviewing.† 25 Sept, 2012.

The four levels of measurements

The four levels of measurements The four levels of measurements 1. Explain briefly how you would use number properties to describe the four levels of measurements. Answer: Measurements can be classified into four different types of scales. These are: Nominal Ordinal Interval Ratio Nominal scale: Nominal measurement consists of assigning items to groups or categories. No quantitative information is conveyed and no ordering of the items is implied. Religious preference, race, and sex are all examples of nominal scales. Frequency distributions are usually used to analyze data measured on a nominal scale. Categorical data and numbers that are simply used as identifiers or names represent a nominal scale of measurement. Numbers on the back of a baseball jersey and social security number are examples of nominal data. At the nominal scale, i.e., for a nominal category, one uses labels; for example, rocks can be generally categorized as igneous, sedimentary and metamorphic. For this scale some valid operations are equivalence and set membership. Nominal measures offer names or labels for certain characteristics. The central tendency of a nominal attribute is given by its mode; neither the mean nor the median can be defined. Ordinal scale: An ordinal scale is a measurement scale that assigns values to objects based on their ranking with respect to one another. For example, a doctor might use a scale of 0-10 to indicate degree of improvement in some condition, from 0 (no improvement) to 10 (disappearance of the condition). An ordinal scale of measurement represents an ordered series of relationships or rank order. Individuals competing in a contest may be fortunate to achieve first, second, or third place. First, second, and third place represent ordinal data. In this scale type, the numbers assigned to objects or events represent the rank order (1st, 2nd, 3rd etc.) of the entities assessed. An example of ordinal measurement is the results of a horse race, which say only which horses arrived first, second, third, etc. but include no information about times.: The central tendency of an ordinal attribute can be represented by its mode or its median, but the mean cannot be defined. Interval scale: Quantitative attributes are all measurable on interval scales, as any difference between the levels of an attribute can be multiplied by any real number to exceed or equal another difference. A highly familiar example of interval scale measurement is temperature with the Celsius scale. In this particular scale, the unit of measurement is 1/100 of the difference between the melting temperature and the boiling temperature of water at atmospheric pressure. The zero point on an interval scale is arbitrary; and negative values can be used. The formal mathematical term is an affine space (in this case an affine line). Variables measured at the interval level are called interval variables or sometimes scaled variables as they have units of measurement. Ratios between numbers on the scale are not meaningful, so operations such as multiplication and division cannot be carried out directly. But ratios of differences can be expressed; for example, one difference can be twice another. The central tendency of a variable measured at the interval level can be represented by its mode, its median, or its arithmetic mean. Statistical dispersion can be measured in most of the usual ways, which just involved differences or averaging, such as range, inter quartile range, and standard deviation. Since one cannot divide, one cannot define measures that require a ratio, such as studentized range or coefficient of variation. More subtly, while one can define moments about the origin, only central moments are useful, since the choice of origin is arbitrary and not meaningful. One can define standardized moments, since ratios of differences are meaningful, but one cannot define coefficient of variation, since the mean is a moment about the origin, unlike the standard deviation, which is (the square root of) a central moment Ratio scale: The ratio scale of measurement is the most informative scale. It is an interval scale with the additional property that its zero position indicates the absence of the quantity being measured. You can think of a ratio scale as the three earlier scales rolled up in one. The ratio scale of measurement is similar to the interval scale in that it also represents quantity and has equality of units. However, this scale also has an absolute zero (no numbers exist below the zero). A ratio scale is a measurement scale in which a certain distance along the scale means the same thing no matter where on the scale you are, and where 0 on the scale represents the absence of the thing being measured. Most measurement in the physical sciences and engineering is done on ratio scales. Mass, length, time, plane angle, energy and electric charge are examples of physical measures that are ratio scales. The scale type takes its name from the fact that measurement is the estimation of the ratio between a magnitude of a continuous quantity and a unit magnitude of the same kind. Informally, the distinguishing feature of a ratio scale is the possession of a non-arbitrary zero value. For example, the Kelvin temperature scale has a non-arbitrary zero point of absolute zero, which is denoted 0K and is equal to -273.15 degrees Celsius. This zero point is non arbitrary as the particles that compose matter at this temperature have zero kinetic energy. All statistical measures can be used for a variable measured at the ratio level, as all necessary mathematical operations are defined. The central tendency of a variable measured at the ratio level can be represented by, in addition to its mode, its median, or its arithmetic mean, also its geometric mean or harmonic mean. In addition to the measures of statistical dispersion defined for interval variables, such as range and standard deviation, for ratio variables one can also define measures that require a ratio, such as studentized range or coefficient of variation. 2. Define the terms direct measurement and indirect measurement. Describe briefly how you would make profit of indirect measurement in psychological traits. Answer: There are 2 types of measurement techniques are developed in order to measure quality or characteristics of attributes. First one is quantitative and second is qualitative. Quantitative can be measured directly and qualitative can not be measured directly. The height and weight of a person can be measured directly with scales in feet/meter, kilogram. But qualitative variable cannot be measured with scales such as feet, meter, kilogram etc. For example, Kindness, love and intelligence of a person can not be measured directly. Indirect measurement can be used for these cases. To measure this type of cases different indirect measures like answer to questions, IQ tests can be used. Indirect measurements are mostly used in social science. Richness, happiness, good life, poverty etc can be measured with the support of different indirect indicators. In order to measure psychological traits we use behaviors as a basis for measurement. Qualities of an individual can be measured indirectly through psychological testing by developing indicators. In standard psychological test we develop the set of standard as questionnaire or guidance fro scoring the attributes or traits. We largely use objective types of question and interpret according to the guidance of answering. Human behavior can not measure as physical measurement like height, weight. The qualitative aspects like perception, emotion, retention etc can be measured through indirect measurement, which is based on some pre-defined set of standards. 3. What will happen if you use ordinary measurement as though they were interval or ratio measurement? Ordinary data is non parametric data and interval and ratio are parametric data. Therefore we dont use ordinary measurement if the data are in interval or ratio measurement. They differ from each other. To ensure measurement more reliable, selection of appropriate statistical tools according to the nature of data is important. If we use interval/ratio measurement when the data are ordinal scales it may leads false decision. 4. Which method census or sampling do you prefer the most for describing the reality of Nepali classroom teaching learning? Explain in brief. Answer: Sampling method is more applicable than the census method for describing the reality of Nepali classroom teaching learning. To study about promotion, failure and drop out rate, census method can be used. However for the reality presentation, census method can not be convenient. Through the census method each and every unit of the population can be taken into consideration. But it will be highly time and money consuming. Sampling method will make all process faster with less cost. While taking the sample size there is more important of inclusion and representation in the sampling i.e. ethnic group, caste, religion, , geographic zone, and gender, etc. Through educational perspective different grades, private and public school/college suppose to be included. The sample size should more representatives. 5. in a group of 50 children, the 8 children who took longer than 3 hours to complete a performance test in sent-up test were marked as DNC (did not complete). In computing a measure of central tendency for this distribution of scores, what measure we should use and why? Median can be used in computing a measure of central tendency for the distribution of score as mentioned in the question. Median is not affected by extreme values. Arithmetic mean is affected by extreme values. As Median is the positional average, we can get the correct value of central tendency. 6. Give some examples where you need geometric and harmonic mean. Give geometrical interpretation of A.M., G.M. and H.M. Answer: Geometric Mean (G.M): Geometric Mean (G.M) is widely used in averaging ratios and percentages and is computing average rates of increase or decrease. It is also advantageously used in the construction of index numbers. G.M. gives equal weights to equal ratios of change. It is also used to compute the average rate of growth or reduction of population or average increase or decrease of production, profit, sales etc. When we require to give more weight to smaller items and smaller weight to larger (e.g. Social and economic problems) G.M can be used. Harmonic Mean (H.M.): Harmonic Mean (H.M.) is used in computing the averages relating to the rates and ratios such as velocity speed etc., where time factor is the variable. It also can be used for making Human Development Indicator (HDI). Geometrical interpretation of A.M., G.M., and H.M. Let AD = a, DB = b Then represents the radius of the semi circle. Hence radius OP = , which gives the value of A.M. Similarly radius OQ = , Now OD = b = Now DQ2 = OQ2 OD2 = { }2 { }2 = ab Hence, DQ = , which represents G.M. Now, in the right angled triangle ODM, DM2 = OD2 OM2 And in right angled triangle DMQ, DM2 = DQ2 MQ2 Hence, OD2 OM2 = DQ2 MQ2 Here, OQ = . Let OM = x, then MQ = x {}2 x2 = ab { x}2 For solving, x = Hence, MQ = = , which represents H.M. From above it is clear that OP = A.M., DQ = G.M. MQ = H.M. From the figure, it is clear that OP > DQ > MQ. Hence, we can say that A.M. > G.M. > H.M.H 7. Give geometrical meaning of the formula used for Median and Mode for grouped data. Answer.: Geometrical meaning of the formula used for Median: Let consider the following continuous frequency distribution, (x1 < x2 < xn+1). Class interval: x1 x2 , x2 x3, . xk xk+1, . xn xn+1 Frequency: f1 f2 fk fn The cumulative frequency distribution is given by: Class interval: x1 x2 , x2 x3, . xk xk+1, . xn xn+1 frequency : F1 F2 Fk Fn Where, Fi = f1 + f2 + ..+ fi-1. The class xk xk+1 is the median class if and only if Fk-1 < N/2 < Fk. Now, if we assume that the variate values are uniformly distributed over the median class which implies that the ogive is a straight line in the median class, then we get from the fig.1, tan = i.e. or or, = Where is the frequency and h the magnitude of the median class. Hence, BS = Hence, Median = OT = OP + PT = OP + BS = l + This is the required formula. Geometrical meaning of the formula used for Median: Let us consider the continuous frequency distribution: Class interval : x1 x2 , x2 x3, . xk xk+1, . xn xn+1 frequency : f1 f2 fk fn If fk is the maximum of all the frequencies, then the modal class is (xk xk-1). Let us further consider a portion of the histogram, namely, the rectangle erected on the modal class and the two adjacent classes. The modal is the value of x for which the frequency curve has a maxima. Let the modal point be Q (fig. 2) From the figure, we have tanß = and tana = or, or, , where h is the magnitude of the model class. Thus solving for LM, we get LM = Hence, Mode = OQ = OP + PQ = OP + LM = l + 8. Squaring deviations and then taking squares seems to be useless. Why do we use square? Answer: Squaring deviation and then taking squares seems to be useless however actually it has certain meaning like the squaring of the deviations (x-x) removes the drawbacks of ignoring signs of the deviations in computation of mean deviation. Taking the sign into consideration we obtain positive values always when squared. But squaring gives aunit that isthe square of theunit the quantity is measured in. This step provides it suitable for further mathematical treatment. 9. Study the following summary statistics of the scores of two graders VI and VII. Now give your answer to the following questions and give figures to support your answers. a. Which class had the larger number of pupils? Answer: Grade VI had larger number of pupils. b. Which class on the average had the higher scores? Answer: Grade VII on the average had the higher scores. c. In which class were the scores more scattered? (Given four different statistics to show the difference in scatter.) Answer: For Grade VI, the scores are more scattered. The four different measures to show the difference in scatter ness are as follows: Interquartile range Coefficient of S.D. Coefficient of M.D. from mean Coefficient of variation 9. Are the distributions of scores about the mean symmetrical? What is your evidence? If not, which class has high scores not balanced by similar low scores? The distribution of scores about the mean in both classes are not symmetrical as we can find Mean = Median = Mode is not satisfied for both the grades. In grade VI, since Mean < Median Median > Mode, it is positively skewed. That is there is greater variation towards the higher values of the variables. 10. Take one distributed data grouped into different frequencies and calculate different measure of central tendencies (Arithmetic mean, Median, and mode) and measures of dispersion (Q.D., MD, and SD). Give your judgments about your data concerning to symmetry. Answer: Suppose, the weights of 50 students of a class are classified below. For Mean; Mean = A + = 65- = 64.87 Hence, Mean =64.87 For Median; Hence, Median lies in the class 60-70 Median = = 60+=66.2 Hence, Median=66.2 For Mode; Since maximum frequency occurs at two classes, so the given distribution is a bimodal distribution. So, Mode =3 median-2 mean =3*66.87-2*64.87 =198.6-129.74=68.86 Hence, Mode=68.86 For Quartile Deviation; Position of Q1= Hence First Quartile (Q1) lies in the interval 50-60 Now, Q1 = 50+ Hence, First Quartile (Q1)= 57.28 Position of Q3= Hence Third Quartile (Q3) lies in the interval 70-80 Again, Q3 = =70+ =73.62 Now, QD= ==8.17 Hence, Quartile Deviation (QD) = 8.17 For Mean Deviations; Mean deviation from mean Calculation of Standard Deviations Now, N = 75, ÃŽ £fd = -1 ÃŽ £fd2 = 89 = = =1.08*10 =10.81 To identify Symmetry Here, Mean = 64.87 Median = 66.2 Mode = 68.86 Hence, the curve is not symmetrical. Calculation of Skewness Sk = is negative skewed.

Penetration Testing Of General Hospital Information Technology Essay

Penetration Testing Of General Hospital Information Technology Essay Penetration testing PeT appendix B has always been an important first-step in any security life cycle. By doing penetration testing, the Hospitals IT team can obtain many invaluable information about the Hospitals newly developed security system. Basically the process of penetration testing will be involved with gathering information. Using these information to identity and then try to exploit the security vulnerabilities. 1/ Why do we need to perform penetration testing: Penetration testing is one of the oldest and effective method to evaluate the security of a computer system. Nowadays many organizations are using penetration testing in order to discover and fix security weakness before the get exposed. And for General Hospital after the process of creating a new security system, it is important that we do penetration testing, not only to find out about any potential vulnerability, but also to demonstrate the effectiveness of the new system, these are just a few points on why General Hospital should do penetration testing: The main purpose still for greater understanding of the current security system and finding any gap in security. This help the Hospitals IT team to have proper action plans to minimize the threat of attack or misuse. The penetration test will be documented carefully (more information on this bellow), and these well documented results will help the managers in making a strong business case to the Hospital board, explaining, justifying all the budget had been use for creating this new security system. Security is not a one-time solution, its actually a long process of maintaining and upgrading along the way, as new threads are being discovered. This pen-test maybe the first that SGH have, but itll definitely not be the last. By doing a proper pen-test, the result will act as a good foundation for future testing. 2/ Quality of the test: Like any big project, before we actually committed to complete the task, we have to have a very clear picture of the final product as well as the strategy, and every steps of the way, committing without planning is one way to ensure to achieve failure (more information on planning in the next part). As we go on later in this document, well see that the Hospital will cooperate with a security partner in order to carry the testing, the more reason for two party to sit down and agreed on the standard quality of this test. So, what makes a good penetration testing? Scope of the test: defying a clear scope, that will be most suitable for the Hospital that will be the first and most important task, for a good scope will help to prevent wasting of resource at the same time able to cover every potential vulnerability (the scope defying will be in the next section, the planning stage). Reliable partner : after the planning, sketch out a good strategy, its the security partner job to implement, launch the test, thats why we have to chose a skilled and experienced partner, the one who know what they are doing, in the fourth section, we will chose a partner that: Legally capable. Technically capable Can abide the non disclosure agreement, and this is especially important, for we a hospital, working with highly sensitive information. Choosing correct and adequate series of test, this depends heavily on the scope that we decide on. Also the executing of the test must follow strict methodology, every test must be planned carefully, followed the plan, and the well documented. This is very important because if we treat the test just like a guessing game, to see where the weaknesses are, its very likely that we are going to miss something, and that alone make the purpose of doing penetration testing completely voided. Result oriented: the only thing we care for its the result of the test, thats why the results should be well documented, the team should pay attention also to make the result understandable, so that the Hospital board can easily understand the problems, the consultant of the security partner company should also be ready to present and explain the results. With that set of quality in mind, we are going to proceed to the planning and further steps accordingly. However, because we are not going to actually perform the test, so we are only going through: planning, defying scope, chose a strategy, choosing the tests, and lastly defying methodology and standard for these series of test, we are going to explain what do we chose and why, as for the definition and how to execute please refer to the appendix. II/ The planning stage: In this part, we will cover the planning, defying scope, that lead to a strategy plant, which will be the back bone guide line for any further tests to follow. The security priorities of different target are different, for a service net work it is important to have a high stability, availability, or in case of an e-business network, it requires high authenticity. However none of that can be apply to SGH, for a hospital the utmost priority are confidentiality, data integrity, we are dealing with patients data here, there is no point in taking the Hippocratic Oath to keep the patients information confidential while on the other hand slacking off In putting effort to protect those information. Not only that we are dealing with much higher stake game here, which involve humans lives. This is no longer just protecting data for data mean money. When I were young, I remember a movie where a patient with a broken jaw put back together by metallic platting, years latter he has cancer, and his doctor without knowing about the platting still send him to the MRI machine (highly magnetic), and lead to his gruesome death. All of which cause by lack of de ntal documentation in his medical history. So in a nut shell, SGH highest priority is data Integrity and confidentiality, but in the mean time we still have to do minimum checking on every other aspect, leave out nothing. The second as part of SGH network system is the personnel, which in this case are doctors and nurses mostly. They are among the most highly trained employees, however not in IT. Nowadays almost every hospital in Singapore has been completely digitalized, dealing with database instead of paper files, also with many medical devices are being monitored by computer programs. The combination of high tech with unexperienced user leads to a very high chance of application misuse, data input wrongly. That put application security testing (appendix B application security testing) priority a bit higher than normal. So as a conclusion for the strategy of this penetration test: we are going to do a penetration test follow Blind Testing strategy (Bind testing strategy Appendix B) to stimulate the action like a real hacking attempt by hacker to obtain confidential data, or to modify, deleteà ¢Ã¢â€š ¬Ã‚ ¦etc. In the same time we will combine with certain Internal testing (Internal testing strategy), mostly focus on application security, misuse..etc, and of course a few basic test again common threat however we are not going to deep in that. After decided on a plan and testing strategy, the next step will be vulnerability assessment III Vulnerability assessment (VA): Why should we do VA (VA appendix B)? In fact there are some confusion between VA and pen-test, sometime people lable them as the same. Pen-test mostly consis of VA, but then take one step futher, find out the weak spot then attack it. So basically before we do pen-test, the first step would be VA. For the detail of how to do VA please refer to VA Appendix A . But basically we are going to series of techniques that can be considered as research before attack. Passive research: learn as much as we can about SGH, from out site point of view. Open source monitoring: utilizes Internet meta-searches focus on specific keywords, or sensitive information to see if there are any leaking. Network mapping and OS fingerprinting: from out side view, figuring out the structure of the network, even able to draw out a network diagram from the information gatherd through different tools Spoofing: trick the targeted computer in side the Hospital, sending out packets pretending that they are from trusted source. Network sniffing: capture data as it travel in and out the network, especially we have the different site between Clinics and Hospital, this can be a good check to see if our VPN is working properly. Trojan attack: and yes the traditional, butter and bread Trojan attack, Even though its basic, but because its so popular, itll be a mistake to think that our fire wall can do all the job, when Trojans combine with social engineering can be devastating. Brute force attack: this can be optional as we mention before the availability of the network may not be our highest priority, however if the resource allow, we can still do it, as a better safe than sorry. Vulnerability scanning: finally we can use automated tools to scan the whole database looking for potential vulnerability (the how, and what tool can be found in VA appendix A) After all those test, its very likely that we may able to discover a few holes in our security system. However in order to make sure that in all those vulnerabilities weve just discover none are false positive we will go to the next step is exploit testing, meaning actually attack to see if any got through. IV penetration testing, different types of test: Exploit testing (exploit testing appendix B) normally is the final stage in the whole process of penetration testing. There are many type of test, each with different level of commitment. We have to chose which test, and how far do we want to push. This decision is based on two aspects. One is the predefined scope that everybody agreed on earlier, we will conduct the test accordingly to that scope, to the strategy. The second is based on the result of VA, attack on every potential vulnerability that weve just found. In this scenario, because we have not actually performed the test, so we are going to chose based on the scope only. 1/ Database Integrity: As we discussed in the previous section, the integrity and confidentiality of SGH database is our highest priority. The fact that in the process of VA, we have done many test and checking, sniffing, mapping, Trojan, brute force, those are not only VA testing but actually a part of testing the confidentiality and integrity level of the data base also. Thats the fine line between VA and penetration testing as many of the assessment can actually be consider as exploitive. In the same manner in this stage of exploitive testing there still are test that could be done that may very well have been a part of VA like: War dialling: (war dialling appendix B): by calling a wide range number of telephone inside SGH, we may catch a modem, remote access devices, and maintenance connection that may leave an open on the hospital network. Why do we even consider this method? The fact that nowadays not only user, but even IT staff have very high ignorance when considering the phone network, while in fact they are the very primate assess point that possible for hacker to exploit, you dont actually need to be ignorance, just careless is enough, like leaving an open modem on a critical node of the network is enough to create an opening. There are many tools we can use for war dialling: ToneLoc from Minor Threat and Mucho Maas, or its alternative ModemScan , they both can be use for Microsoft window platform. TeleSweep for Microsoft also, and its free. For Macintosh use Assault Dialer. Unix try PAWS, THC-SCAN NG, Telescan, IWAR (intelligent war dialler), or ShokDial (from: http://www.tech-faq.com). 2/ Social engineering testing: Social engineering test (appendix B SE) is part of the blind strategy testing. The environment we are working on is SGH, where most of the employee dont have in-depth training in IT, an other point is the helpful nature, answering question is kind of comes with the job description, all in one word: gullible nurses. For any cunning hacker, this is a big fat moving target for social engineering attack. For that reason, basic training in social attack is required, in the same time several test can be conduct, mainly in two forms: Non face-to-face: the test can be done over mail, or phone, pretending to be somebody who have authority, or who needs help to tricks the user to use account, password, or giving out sensitive information. Face-to-face: this is a more advance kind of social engineering, by posting as an employee of authorized personnel , gaining physical access to restricted areas getting information, from intercepting mail to dumpster divingà ¢Ã¢â€š ¬Ã‚ ¦etc Social engineering maybe no as technical as other test, but it has equal importance if not more, for the fact that there are actually no fool proof method to prevent social engineering attack other than out smart the attacker, which Is ironically we dont usually put the smartest people of the organization to the reception desk , the only thing we can do is to raise the level of awareness of the employee (there are books on this matter like: the art of deception, the art of intrusion both by Mitnick Simon ) . 3/ Application security testing: The second point from the scope as we discussed earlier is Application security: there are a series of test for application security (technical detail on appendix A AppT): Code view, Authorization testing, Input validation, cookie security, Lockout testing, there are also some test for the functionality of the application as well like: input validation, Transaction testingà ¢Ã¢â€š ¬Ã‚ ¦etc For why we need application testing we have discussed above, but then again, do we really need to do all those test? Yes, we do. The objective of doing so many test on Application alone is to fully evaluate the control we have over our application (medical application, network applicationà ¢Ã¢â€š ¬Ã‚ ¦). The focus of those test still focus mainly on protecting the confidentiality and integrity of information, how to authenticate user, and also on the using of cookies (appendix B cookies) 4/ other test: There are some other test like: denial of service testing, resource..etc but as we mention above, these are not compulsory, not that they are not important, but there are higher priority test that need to be done. But since these are common attack and easy to carry out, its recommended that if the resources allow, we should go ahead and perform the tests, even at basic level. (the detail of the test can be found at DoS testing appendix A). V Other detail of a penetration test: 1/ methodology and standards: Methodology actually is a very important factor of a penetration test. A test that acts without a formal methodology has no real meaning, just poking around. But on the other hand, methodology should only acts as a framework, a discipline guideline to follow, we should not restrict the tester rather than let him/her fully explore his/her intuitions, while acting accordingly to the guideline. There are several methodology and standards, as for their technical detail, please refer to appendix A Metho 2/ Security partner: The reason why we needs to pay money for a third party to perform the test for us is : Un unbiased point of view: like a beta tester, sometime the programmer, or in this case the SGH IT team, cannot see ones own mistake clearly, so we need to hire trained professional to look for us. Highly experienced and highly trained: for the member of the IT team, some may have done a penetration test before, some may not. But for a company that specialize in penetration testing. They have done it hundreds of time, even done it for some big organization, thats why with the experience and the training, its more likely that they can discover things that the IT team cannot. Certified result: a Certified penetration testing company will have to satisfies certain level of standards (refer to appendix A Metho). If a test done by a Certified party, it can become a potential strong legal argument for future conflicts (for example: Insurance conflicts). With all those reason weve decided to hire a security partner to perform the test for us. In Singapore there are many company that have the certification and standards to perform such test, most trustworthy must be: Cisco IBM (with the express penetration testing service) Obtechs Certified penetration testing specialist 3/ Risks in doing penetration testing: While doing penetration testing, there are certain risks that we should consider and be careful for: Risk of exposure: there are many sensitive data in the hospital, sometime these data can be expose during a pen-test it can be unintentionally or intentionally, we have to have strong agreement of the conditions and responsibility of the security partner. Time delay: Pen-test take time, and for Hospital environment we cannot simply lock down our data base for testing, thats why a strict time-frame. For the size of our Hospital system, the testing should not take more than a month. VI Conclusion: As we all know security is continuum, no absolute. Through the penetration tests we should be able to not only find out there are flaws in the security system, but we have to go further to understand the process failures that lead to those flaws. Through the test, we can see that even a brand new developed security system can have many vulnerability, its a reminder to us so that we never have a false sense of security!. Appendix A: 1/ VA (Vulnerability assessment): As documented by SANS, Vulnerabilities are the gateways by which threats are manifested. In other words, a system compromise can occur through a weakness found in a system. A vulnerability assessment is a search for these weaknesses/exposures in order to apply a patch or fix to prevent a compromise. How do these weaknesses occur? There are two points to consider:  · This newly developed security system for SGH were born with it, means while underdeveloping by mistake the developing team creat the weakness.  · Many vulnerabilities occur as a result of misconfigurations by system administrators. Misuse by user, all can lead to the result of making a hole in the security system. There are many ways to search for vulnerability, however in our scenario, it is best to do it as a out side hacker would do it, before attacking a system, the hacker also have to perform a vulnerability assessment test on the system, only different would be we are going to do it on full scale, not only from outside looking in but also from the insider view. There are however certain number of technique that could effectively point out the weaknesses if the system have one. Passive research: As the name suggests, a passive research is a method used to gather as much information about an organizations systems configuration from public domain sources such as: o DNS (domain name service) o RIPE (Rà ©seaux IP Europà ©ens) o USENET (newsgroups) o ARIN (American Registry for Internet Numbers) Passive research is generally performed at the beginning of an external penetration test. Open source monitoring: This service is an associated technique that utilizes Internet meta-searches (multiple searches of Web sites, newswires, newsgroups and other sources) targeted on keyword that are important to the organization. The data is collected and discoveries are highlighted to the organization. This helps identify whether organizations confidential information has been leaked or whether an electronic conversation involving them has taken place. This enables an organization to take necessary measures to ensure confidentiality and integrity. Network mapping and OS fingerprinting: Visualization of network configuration is an important part of penetration testing. Network mapping is used to create a picture of the configuration of the network being tested. A network diagram can be created which infers the logical locations and IP addresses of routers, firewalls, Web servers and other border devices. Additionally, this examination can assist in identifying or fingerprinting operating systems. A combination of results from passive research and tools such as ping, traceroute and nmap, can help create a reasonably accurate network map. An extension of network mapping is Port Scanning. This technique is aimed at identifying the type of services available on the target machine. The scan result reveals important information such as function of a computer (whether it is a Web server, mail server etc) as well as revealing ports that may be serious security risks such as telnet. Port scans should include number of individual tests, including: o TCP (Transmission Control Protocol) scan o Connect scan o SYN (or half open) scan o RST (or Xmas-tree) scan o UDP (User Datagram Protocol) and ICMP (Internet Control Message Protocol) scans. Tools such as nmap can perform this type of scan. o Dynamic ports used by RPC (Remote Procedure Call) should be scanned using tool such as RPCinfo. Spoofing: Spoofing involves creation of TCP/IP packets using somebody elses Internet addresses and then sending the same to the targeted computer making it believe that it came from a trusted source. It is the act of using one machine to impersonate another. Routers use the destination IP address in order to forward packets through the Internet, but ignore the source IP address. The destination machine only uses that source IP address when it responds back to the source. This technique is used in internal and external penetration testing to access computers that have been instructed to only reply to specific computers. This can result in sensitive information be released to unauthorised systems. IP spoofing is also an integral part of many network attacks that do not need to see responses (blind spoofing). Network sniffing: Sniffing is technique used to capture data as it travels across a network. Sniffing is an important information gathering technique that enables capturing of specific information, such as passwords and also an entire conversation between specific computers, if required. To perform sniffing, the network card of computer needs to be put in promiscuous mode, so that it captures all data being sent across the network. Sniffing is extensively used in internal testing where the sniffer or the computer in promiscuous mode is directly attached to the network enabling capturing of a great deal of information. Sniffing can be performed by a number of commercial tools such as Ethereal, Network Associates SnifferPro and Network Instruments Observer. Trojan attack: Trojans are malicious programs that are typically sent into network as e-mail attachments or transferred via IM chat rooms. These programs run in stealth mode and get installed on the client computer without the users knowledge. Once installed, they can open remote control channels to attackers or capture information. A penetration test aims at attempting to send specially prepared Trojans into a network. Brute force attack: A brute force attack involves trying a huge number of alphanumeric combinations and exhaustive trial and error methods in order find legitimate authentication credentials. The objective behind this time consuming exercise is to gain access to the target system. Brute force attacks can overload a system and can possibly stop it from responding to legitimate requests. Additionally, if account lockout is being used, brute force attacks may close the account to legitimate users. Vulnerability scanning/analysis: Vulnerability scanning/analysis is an exhaustive examination of targeted areas of an organizations network infrastructure aimed at determining their current state. The targets range from a single system or only critical systems to scanning the entire network. It is usually performed using automated tools that test for a multitude of potential weaknesses in a system against a database of known vulnerabilities and report potential security holes. And although they dont actively prevent attacks, many scanners provide additional tools to help fix found vulnerabilities. Some of the commonly used vulnerability scanners include: the open-source Nessus Projects Nessus, ISS Internet Scanner, GFI Softwares GFI LANguard Network Security Scanner, eEye Digital Securitys Retina Network Security Scanner, the BindView RMS vulnerability-management solutions and Network Associates CyberCop. 2/ application testing ( AppT ) For the purpose of application testing there are several test that can be done: * Code review: Code reviews involve analysing all the application-based code to ensure that it does not contain any sensitive information that an intruder might use to exploit an application. For example: Publicly available application code may include test comments, names or clear text passwords that will give an intruder a great deal of information about the application. * Authorization testing: Involves testing the systems responsible for the initiation and maintenance of user sessions. This will require testing: o Input validation of login fields bad characters or overlong inputs can produce unpredictable results; o Cookie security cookies can be stolen and legitimate sessions can be used by an unauthorised individual; and o Lockout testing testing the timeout and intrusion lockout parameters set in the application, to ensure legitimate sessions cannot be hijacked. This is performed to discover whether the login system can be forced into permitting unauthorised access. The testing will also reveal whether the system is susceptible to denial of service attacks using the same techniques. * Functionality testing: This involves testing the systems responsible for the applications functionality as presented to a user. This will require testing: o Input validation bad characters, specific URLs or overlong inputs can produce unpredictable results; and o Transaction testing ensuring that the application performs to specification and does not permit the user to abuse the system. 3/ DoS testing: Denial of service testing involves attempting to exploit specific weaknesses on a system by exhausting the targets resources that will cause it to stop responding to legitimate requests. This testing can be performed using automated tools or manually. The different types of DoS can be broadly classified into software exploits and flooding attacks. Decisions regarding the extent of Denial of Service testing to be incorporated into a penetration testing exercise depend on the relative importance of ongoing, continued availability of the information systems and related processing activities. Denial of service can take a number of formats; those that are important to test for are listed below: * Resource overload these attacks intend to overload the resources (i.e. memory) of a target so that it no longer responds. * Flood attacks this involves sending a large amount of network requests with the intention of overloading the target. This can be performed via: ICMP (Internet Control Message Protocol), known as smurf attacks UDP (User Datagram Protocol), known as fraggle attacks * Half open SYN attack this involves partially opening numerous TCP connections on the target, so that legitimate connections could not be started. * Out-of-band attacks these attempt to crash targets by breaking IP header standards: o Oversized packets (ping of death) the packet header indicates that there is more data in the packet than there actually is. o Fragmentation (teardrop attack) sends overlapping fragmented packets (pieces of packets) which are under length. o IP source address spoofing (land attack) causes a computer to create a TCP connection to itself. o Malformed UDP packet header (UDP bomb) UDP headers indicate an incorrect length. 4/ Methodology and standards (Metho): The Open Source Security Testing Methodology Manual (OSSTMM) by Pete Herzog has become a de-facto methodology for performing penetration testing and obtaining security metrics. According to Pete Herzog, The primary goal of the OSSTMM is to provide transparency. It provides transparency of those who have inadequate security configurations and policies. It provides transparency of those who perform inadequate security and penetration tests. It provides transparency of the unscrupulous security vendors vying to sponge up every last cent of their preys already meager security budget; those who would side-step business values with over-hyped threats of legal compliancy, cyber-terrorism, and hackers. The OSSTMM covers the whole process of risk assessment involved in a penetration test, from initial requirements analysis to report generation. The six areas of testing methodology covered are: * Information security * Process security * Internet technology security * Communications security * Wireless security * Physical security The OSSTMM focuses on the technical details of exactly which items need to be tested, what to do before, during, and after a security test, and how to measure the results. New tests for international best practices, laws, regulations, and ethical concerns are regularly added and updated. The National Institute of Standards and Technology (NIST) discusses penetration testing in Special Publication 800-42, Guideline on Network Security Testing. NISTs methodology is less comprehensive than the OSSTMM however it is more likely to be accepted by regulatory agencies. Standards in penetration testing Lets take a look at some of the standards and guidelines available: Standards for Information Systems Auditing (ISACA): ISACA was established in 1967 and has become a pace-setting global organization for information governance, control, security and audit professionals. Its IS auditing and IS control standards are followed by practitioners worldwide and its research pinpoints professional issues challenging its constituents. CISA, the Certified Information Systems Auditor is ISACAs cornerstone certification. CHECK: The CESG IT Health Check scheme was instigated to ensure that sensitive government networks and those constituting the GSI (Government Secure Intranet) and CNI (Critical National Infrastructure) were secured and tested to a consistent high level. The methodology aims to identify known vulnerabilities in IT systems and networks which may compromise the confidentiality, integrity or availability of information held on that IT system. CHECK consultants are only required when the assessment for HMG or related parties, and meets the requirements above. In the absence of other standards, CHECK became the de-facto standard for penetration tests and penetration testing in the UK. Companies belonging to CHECK must have employees that are security cleared and have passed the CESG Hacking Assault Course. However, open source methodologies such as the following are providing viable and comprehensive alternatives, without UK Government association. OSSTMM: The aim of The Open Source Security Testing Methodology Manual is to se

Brave New World Essay - Societys Moral Decline :: Brave New World

Brave New World   Society's Moral Decline    Aldous Huxley wrote Brave New World out of fear of society's apparent lack of morals and corrupt behaviour during the roaring twenties. Huxley believed that the future was doomed to a non-individualistic, conformist society, a society void of the family unit, religion and human emotions.   Throughout the novel, Huxley predicts many events for the future, most of which concentrate on a morally corrupt society.   The most important of these predictions include:   greater sexual freedom, over-population, brain-washing/sleep-teaching, and the use of mind altering drugs.   Aldous Huxley's Brave New World warns of a possible future dystopia, based on social attitudes and medical advancements of his time.      Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   Huxley's future dystopia is created largely by perverted sexual freedoms, which in turn cause corrupt individuals, entirely lacking ethics and morals.   Sexual promiscuity appears to be a much more frequent activity now then it was in the Thirties.   Critics blame "...the advent of the pill for declining morality and indiscriminate sexual activity."   Many believe that each time medicine reduces the risk of unwanted diseases and pregnancies, society, on the whole, will increase its sexual activity.   Huxley's prediction of promiscuity is based on his iron law of sexuality:   "As political and economic freedom diminishes, sexual freedom tends compensatingly to increase."   A current example of Huxley's belief is China. China is the last   remaining communist regime, it also suffers from having one fifth of the world's population within its borders.   Needless to say, China's large population is a direct result of a very sexually active society.   Aldous Huxley's fears of the future caused him to write about sexual freedom and the resulting over-population in Brave New World.      Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   Over-population is another problem which is addressed by Huxley, and is the direct result of sexual freedom.   The fear which Huxley addresses concerning population control is:   "Food supplies cannot grow as fast as people can, and population growth in underdeveloped countries will jeopardize the world order."   Simply stated the growing population of earth will consume more than it will be able to produce, unless some form of regulating births can be created.   This is an obvious truth today, as millions of people are starving each day.   The brave new world that Huxley speaks of, is a warning to mankind concerning its destruction of the laws of nature. For example, marriage is forbidden, as well as, pregnancies, and mothers are non-existent because possible children result in abortion.   Ã‚  Ã‚  Ã‚  Ã‚