Lm317 Adjustable Voltage Regulator Free Essays

Research about LM317 Positive Adjustable Linear Voltage Regulator: The LM317T is a 3-terminal coordinated circuit which can flexibly a heap momentum of up to 1. 5 Amps with a yield voltage of between 1. 2V and 37 Volts. We will compose a custom paper test on Lm317 Adjustable Voltage Regulator or on the other hand any comparative subject just for you Request Now It acknowledges an information voltage of somewhere in the range of 3 and 40 volts. It very well may be utilized to manage either present or voltage in circumstances where a fixed present or fixed voltage is required. The degree of current or voltage required can be balanced by associating the chip in arrangement with a fixed resistor and a potentiometer. The LM317 is likewise a famous variable voltage controller. It was developed by Robert C. Dobkin and Robert J. Widlar in 1970 while they worked at National Semiconductor. Besides, both line and burden guideline is superior to standard fixed controllers. Notwithstanding having better than fixed controllers, this gadget remembers for chip current constraining, warm over-burden insurance, and safe working territory security. All over-burden assurance remains completely practical, regardless of whether the modify terminal is detached. The LM317 is flexible in its applications, remembering utilizes for programmable yield guideline and nearby on-card guideline. Or then again, by associating a fixed resistor between the change and yield terminals, the LM317 can work as an accuracy current controller. A discretionary yield capacitor can be added to improve transient reaction. The alter terminal can be skirted to accomplish high wave dismissal proportions, which are hard to accomplish with standard three-terminal controllers. LM317 Adjustable Voltage Regulator pin design. LM317 Adjustable Voltage Regulator Internal Block Diagram Operation of the LM317 Adjustable Voltage Regulator: A steady 1. 5V reference voltage (VREF) produces a steady current (IREF) through R1 paying little mind to the estimation of R2. IREF = VREF/R1 In activity, the LM317 builds up an ostensible 1. 25V reference voltage, VREF, between the yield and alteration terminal. The reference voltage is intrigued over the resistor R1 and, since the voltage is steady, a consistent current I1 then move through the yield set resistor R2, giving a yield voltage of: VOUT = VREF (1+ R2/R 1) + IADJ R2 (The IADJ is commonly a 50 Â µA; it is irrelevant in many applications and the info voltage ought to be 2-3V higher than with its yield voltage. Application Information: NOTES: A. Ci isn't required, yet is suggested, especially if the controller isn't in nearness to the force gracefully channel capacitors. A 0. 1-? F circle or 1-? F tantalum gives adequate bypassing to most applications, particularly when change and yield capacitors are utilized. B. CO improves transient reaction, yet isn't required for security. C. The Output Voltage (Because IAdj regularly is 50 ? An, it is immaterial in many applications. ) D. CADJ is utilized to improve swell dismissal; it forestalls enhancement of the wave as the yield voltage is balanced higher. In the event that CADJ is utilized, it is ideal to incorporate security diodes. E. In the event that the info is shorted to ground during a flaw condition, insurance diodes give measures to forestall the chance of outside capacitors releasing through low-impedance ways in the IC. By giving low-impedance release ways to CO and CADJ, separately, D1 and D2 keep the capacitors from releasing into the yield of the controller. Schematic Diagram: Solving for IREF: IREF = VREF/R1 IREF = 1. 25V/10000? IREF = 125mA Solving for VOUT(MIN) and VOUT(MAX): VOUT (MIN)/(MAX) = VREF (1+ R2/R1) + IADJ R2 VOUT(MIN) = 1. 25V (1+ 0? /10000? ) + 0. 000050A * 0? VOUT(MIN) = 1. 25V VOUT(MAX) = 1. 25V (1+ 50000? /10000? ) + 0. 000050A * 50000? VOUT(MAX) = 10V (Therefore, the base information voltage that so as to flexibly its most extreme yield voltage is 12V. ) List of Components: Name| Type| Symbol| Material| Description| LM317 (IC) | Adjustable Linear Voltage Regulator| | It is a customizable three-terminal positive voltage controller equipped for providing mutiple. 5A over a yield voltage scope of 1. 5 V to 37 V. | Potentiometer| Variable Resistor| | Informally, a pot, in gadgets innovation is a part, a three-terminal resistor with a sliding contact that shapes a movable voltage divider. On the off chance that solitary two terminals are utilized, one end and the wiper, it goes about as a variable resistor or rheostat. | Ceramic Capacitor| Unpolarized| | It is a two-terminal non-polar gadget that is built of substituting layers of metal and fi red, with the clay material going about as the dielectric. | Name| Type| Symbol| Material| Description| Electrolytic capacitor| Polarized| | Formerly known as condenser, is a latent two-terminal electrical part used to store vitality in an electric field. | Resistor| Carbon Film| | It is a detached two-terminal electrical part that actualizes electrical obstruction as a circuit component. The current through a resistor is in direct extent to the voltage over the resistor’s terminals. | Diode| Rectifier| | It is a two-terminal electronic segments that permit current to stream in just a single course, from an anode (+) to a cathode (- ), and that convert AC to DC. Segment Layout: PCB Design Layout: Conclusion: I saw that the yield voltage of the controller (LM317) is rely upon the R1 and R2 on the grounds that when the R2 is set to least yield opposition, the yield voltage reduction to its base worth that is equivalent to the voltage reference (VREF) while it is set to the most extreme obstruction, its yield voltage will increment and it will arrive at its greatest yield voltage t hat it can gracefully. As I stated, that the yield voltage can control and set it to the worth that you wanted or enough to gracefully a heap or a circuit. Instructions to refer to Lm317 Adjustable Voltage Regulator, Essay models

Jewish Applicants to the Ivy League

Jewish Applicants to the Ivy League December 7 Jerome Karabel has written a great book on the history of discrimination at Harvard, Yale, and Princeton against Jewish applicants. If you are a Jewish applicant to any of the eight Ivy League colleges or another highly selective college that is not among the Ancient Eight, we thought you might like to check out Jerome Karabels The Chosen: The Hidden History of Admission and Exclusion at Harvard, Yale, and Princeton. Side note: Did you know that Chaim Potok, author of The Chosen, served as a professor at Penn for many years? Anyhow, weve long had an interest in the history of discrimination in the admissions process to Ivy League and other highly selective colleges and as our Founder, Bev Taylor, also happens to be Jewish (fun fact: shes a cousin of Major League Baseball legend Sandy Koufax who refused to pitch in a game of the World Series because it fell on Yom Kippur), Karabels book topped her favorite reads list this year. One of the evil protagonists in Karabels book is  a former president of Harvard, Lawrence Lowell. The man presided at the institution for nearly a quarter century. Karabel offers quite a lot of evidence of Lowells anti-Semitism in his book, including recounting a story in which Lowell wrote a Harvard philosophy professor that admitting Jewish students would cause harm to the university because their matriculation would discourage Protestants from attending. He thus backed the policy of strict quotas and oversaw a reduction in the number of Jewish students attending Harvard. Its no surprise that Lowell later led the charge against the confirmation of Americas first Jewish Supreme Court Justice, Louis Brandeis (after whom Brandeis University is named). Were sure glad he lost that battle and were sure glad Lowell no longer leads an Ivy League institution. But discrimination against Jewish students was not the exclusive policy of Harvard, Yale, and Princeton. Those are just the schools Karabel focuses on. Discrimination against Jewish students was prevalent at many highly selective universities. So how has the landscape changed? Well, now there are several highly selective colleges where being Jewish can actually help students gain admission. There are schools that have a difficult time attracting Jewish applicants to apply and thus they become a coveted group. Weve never listed these elite institutions on our blog because much of our expertise we keep to ourselves. After all, were a business and we want to give our own students every advantage possible. Oh, and one last point: Elite universities may not discriminate against Jewish students any longer but they sure do discriminate against Asian and Asian-American applicants! And  its high time this discrimination comes to an end!

Problems With Social Media Essay - 1343 Words

Problems with Social Media Social media or any other type of social networking can be harmful. There are many studies showing that social media may help our society, but they don’t tell you any of the problems being caused by social media. One of the main problems occurring are cyberbullies. Cyberbullies are bullies over the internet that try to harm people with rude or hateful messages and even misuse personal information. Cyberbullying causes a big issue in society, often leading to stress, anger, and even suicide. To get started, Cyberbullying causes stress on a lot of people, not just the person getting bullied, their friends and their families to. Everyone around the victim must put up with what the cyberbully has done to the†¦show more content†¦When people think they are the only ones getting bullied, they are scared to go out in public, which makes them angry. They don’t know how to solve the problem and that cause huge issues with their life. Constantl y feeling lonely makes you feel like you have no friends, nor can you get any friends because of it. More studies shown from Carl shows that males get angry and vengeful whenever they are cyberbullied, which causes them to say something back to a bully or try to fight. When teens do that when getting bullied rather than trying to solve the problem in a good way only makes things worse. Ignoring a cyberbully and deleting your social media account is a good step into stopping the bullying. If you fire words back at a bully, they know they are getting the attention they want. Bullies strive off attention. Ignoring a bully is one of the most important steps in getting a bully to stop. If that doesn’t work it’s better to start trying to get help from other people such as counseling. The last issue is suicide. Suicide is also a huge problem when it comes to cyberbullying or any other type of bullying. Studies have shown from Jama Pediatrics that Cyberbullying are more strong ly related to suicidal thoughts in children and adolescents than traditional bullying. Estimates have confirmed that almost 20% of victims are cyberbullied. Previous studies have also shown that bullying is a strong factor for adolescentShow MoreRelatedThe Media as a Social Problem Essay1748 Words   |  7 Pages The Media as a Social Problem The mass media plays a large role in modern society. Indeed, many have argued that people spend more time in mass-mediated interaction than in actual human interaction. The mass media, then, would seemingly be an excellent position to initiate social change, positively affect social problems, and help combat social ills that are considered normal patterns of behavior. Yet, the mass media has largely failed in addressing and helping to solve social problemsRead More The Media As A social Problem Essay1731 Words   |  7 PagesThe Media as a Social Problem nbsp;nbsp;nbsp;nbsp;nbsp; nbsp;nbsp;nbsp;nbsp;nbsp;The mass media plays a large role in modern society. Indeed, many have argued that people spend more time in â€Å"mass-mediated† interaction than in actual human interaction. The mass media, then, would seemingly be an excellent position to initiate social change, positively affect social problems, and help combat social ills that are considered normal patterns of behavior. Yet, the mass media has largelyRead MoreCompare Contrast Essay1207 Words   |  5 Pagestablets, television, and laptops are just a few inventions that have us obsessed over them during our free time. With the advent of social media, we have become more engrossed in our own little world. 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This essay will explain the negative effects of fake news. Firstly, fake news can damage the democratic process. Secondly, it can harm enormous part of public safety. Finally, Mistrust is also caused by fake news on social media. Firstly, one of the biggest reasonsRead MoreAnalysis Of Sherry Turrkle The Flight From Conversation958 Words   |  4 PagesProfessor of the Social Studies of Science and Technology at the Massachusetts Institute of Technology, Sherry Turkle, in her New York Times article â€Å"The Flight from Conversation†, identifies society’s declining ability to connect with each other on a person-to-person basis. Turkle’s purpose is to highlight the importance of human interaction with the absence of technology. She supports her argument concerning technology’s negative implications on people’s interactions amongst each other by the following:

Should Marijuana Be Legal For Recreational Use - 853 Words

Addiction in America, it is a sad reality that we must pay more attention to. Not only does it destroy and kill lives, it also is hard to treat. When you are addicted for long periods of time, your dependency on it is like having to breath. Without it you will die. In America even marijuana which is debatably just as harmful as tobacco and alcohol, can put you in jail from from 1-5 years for possession and 10 to life for selling or growing. Now in some states it is legal for recreational use, so this topic has gained some attention where people in other states have already been in jail for a long time for doing what someone in another state is doing it without consequents. Cocaine, Heroin, Meth, etc. are much more addictive and have harsher punishments. These drugs have been proven that without proper treatment, people can become dependent on them again even after 5-10 years of being sober. In jail the treatment options are minimal, only in some rare cases have private prisons have h ad a decent rehabilitation success rate. Some states have federally funded rehabilitation sites where instead of jail time from a possession charge, they can go to these rehabs. These rehabs where established to treat individuals from addiction rather than jail time. Doing this was more ideal to lower the people from doing this again and is also very much more cost effective. In a review from the Justice Policy Institute in Maryland, the success rate of completed treatment of ADAA programs isShow MoreRelatedMarijuana Should Be Legal For Recreational Use873 Words   |  4 PagesRevised: There will be medical benefits if marijuana was legal for recreational use. Premise: Street justice related to drug disputes would be reduced resulting in less crowding in prisons. Revised: Legalizing marijuana will result in less crowding in prisons. 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A place such as Chicago could really use the legalization to help with the school system infrastructure issues they have. With a deficit of over 1.1 billion marijuana sales could alleviate both the conditions of schools themselves, as well as provide more

Infection Control and Hospital Epidemiology

Question: Discuss about the Infection Control and Hospital Epidemiology. Answer: Introduction: Nosocomial infections are the infections acquired by the patients during their stay in the health care facility, and are the major reason behind the majority of the complications that are prevalent in the health care facility. Centre for disease control and prevention have estimated that more than roughly 1.7 million incidences of hospital acquired infections occur that leads to more than 99000 deaths every year (Allegranzi et al., 2013). This ghastly scenario has undoubtedly captured the attention of the health care authorities worldwide and has become one of the public health care priorities in the last few years. Apart from the fatality rates, hospital acquired infections also are found to increase the health care costs to a sweeping 2 to 2.5 folds more and also significantly increases the stay in the hospital of the patients (Al-Tawfiq et al., 2013). A health care complexity so prevalent and nasty could not have been neglected by the health acre authorities and governments, and it has not been. In the last 10 years there have been various infection control strategies that have been introduced in the health care industry that have seen better results with adequate effort and dedicated compliance. One such strategy that is easy, inexpensive and tremendously effective in decreasing the incidence rate of hospital acquired infection is hand hygiene policy. However studies suggest that there is a vast lack of enthusiasm and compliance to this policy which delimits the chance of the patients attaining faster and easier recovery and increases their chance of succumbing to various infections (Al-Tawfiq et al., 2013). This report will attempt to discuss the two strategies to ensure compliance of the health care staff to hand hygiene policies and discuss in details all the factors associated with the implications of these strategies. Significance of hand hygiene compliance: Studies suggest that more than 1000 different species of microorganisms inhabit the human epidermis, or our skin surface. Our hands are the most favourable breeding ground or bacteria and are home to 1500 bacteria for every square centimetre. Apart from that, it should not be overlooked that the microbiota are ubiquitous, they are everywhere, and every possible surface that our hands touch every single day are a source for thousands and thousands of different microbes, a vast majority of them can be infectious (Costers et al., 2012). As hands are the source for thousands of infectious microbes, hand hygiene inevitably is the best and most effective method to keep infection at bay, this is even more effective in the health care facility where both the patients and the health care professionals are exposed to a myriad of microbiota on a daily basis in the health care facility. Hence importance of hand hygiene in health care professionals in the field of medicine is paramount (Ellingson et al., 2014). CDC or centre for disease control and prevention has a predetermined set of hand hygiene policies in place for all health care facilities to follow. The policy statements dictates that antimicrobial washes are to be used to clean hands that appear visibly dirty and soiled, routine hand washing should also be practiced as a daily decontamination strategy and when encountering a contaminated patient of ward (Fisher et al., 2013). The statement further specifies that in instances where the hands are not visibly dirty or soiled alcohol rubs can be opted to perform routine hygienic cleaning of the hands. This technique is to be followed when coming into direct or indirect contact with patients that pose no risk of contamination. Adhering to this hand hygiene policy can ensure decreasing the risk to infection in the patients significantly however there is a significant lack of compliance to the hand hygiene policies (Pan et al., 2013). Considering the Australian health care legislation, the hand hygiene policy is considered to be the fifth most essential health care regimen. According to the guidelines of National Safety and Quality Health Service Standards, hand hygiene is recommended five times for the health care workers all throughout the day (Fuller et al., 2012). On a more elaborative note, the health care workers are supposed to perform hand hygiene before getting in touch with a patient, after getting in touch with patient, before an aseptic duty, after associating with body fluids and before and after entering contaminated area. The clinical risk assessment authority of Australia has recommended that each and every health care organization must practice the guidelines set forth by the National Safety and Quality Health Service in order to minimize the risk to patient due to hospital acquired infection. Moreover is has been also advised to ensure that the staff is encouraged and motivated to comply with the hand hygiene protocol, however litte efforts had been witnessed to achieve this goal (Hagel et al., 2015). Studies suggest that the most of the infection that are acquired by the patients in the health care facility is due to the lack of compliance in the staff about hand hygiene at large. However, there is no significant initiative from the health care authorities to determine the causes behind the non compliance and act upon those reasons (Higgins Hannan, 2013). In a exploratory study it was found that there can be more than reasons why health care profession do not comply to the hand hygiene protocol but the most vital contributing factors can be the lack of awareness and the lack of education in the health care workers that lead them to neglect the hand hygiene protocol leading to putting the health and welfare of the patients at risk (Huis et al., 2012). Such a situation will only continue to escalate if there are no strategies in place to ensure that the health care is compelled and motivated to comply to the policy. Strategise to ensure compliance in health care facilities: One of the contributing factors behind the lack for compliance that takes up the majority of blame is the lack of education and awareness in the health care about the hand hygiene and its importance. Exploratory research studies and surveys suggest that the majority of care support staff do not understand the importance of hand hygiene n clinical practice and often they neglect adhering to this protocol mostly due to lack of time, heavy workload, patient priorities, unfavourable working conditions and lack of sincerity (Ling How, 2012). Hence it is of much importance to educate all the support staff the importance of hand hygiene and how noncompliance to it can lead to harmful consequences for both the patients and the workers themselves. Studies suggest that in most cases the health care staffs is not aware of the risks they put themselves on with neglecting proper hand hygiene and it can be expected that the staff is properly educated about the repercussions of not adhering to a s tandard hand hygiene program they will be more motivated to comply (Momen et al., 2012). These education and training programs can be set up every three months or so to ensure that all the staff get the opportunity to avail this programs. Furthermore these educational programs should be free of cost for the health care professional to attend and should include bonus points in the recognition and appraisal program in place in the health care facility in the health care program to ensure that the staffs is lured to attend this seminars. Lastly the training and employee managements of the health care facility should ensure that the newly recruited staff are made aware of the educational and training programs to attend them (Morgan et al., 2012). Usage of animated and interactive graphics in the educational presentation of the hand hygiene compliance program will also intrigue the employees to attend and understand the policy, its importance and the repercussions of not adhering to it. It has also been observed that most cases the staffs forget in their heavy and exhaustive workload to adhere to the hand hygiene policies, the posters will help the staff to be reminded multiple times (Pincock et al., 2012). On a similar note, another contributing factor that has been identified that propel the staff to not adhere to the hand hygiene guidelines is the difficult access of the sanitation agents and the irritation it causes in the hands of the health care workers. Many health acre surveys have described that a vast majority of the health care workers that refuse the usage of hand sanitation procedures, refuse it because of the lack of availability and difficult access of the sanitation products and the irritation it causes in their hands (Pan et al., 2013). The antimicrobial hand washes are generally made of harsh chemicals that strip the skin off of moisture and cause irritation reaction in the skin for the sensitive skinned population of the health care workers. In case of alcoholic rubs as well, the high concentration of alcohol present rips the natural moisture of the hands on repetitive usage and cause drying and flakiness in skin. Hence, most of the health care workers avoid coming in contact with the hand washes if they can help. The lack of strict regulations and threat to penalties adds fuel to their rebellion further (Pincock et al, 2012). In order to combat this issue the hospital authority needs to undertake the actions to ensure that the hand sanitation products are placed at easily accessible areas all throughout the health care facility and they re replenished regularly to ensure that the inaccessibility of the products do not cause the health care staff to not comply to the hand hygiene policies (Scheithauer et al., 2012). Moreover the health care facility needs to invest in the hand hygiene strategy, so that they can purchase mild antimicrobial hand washing agents that are gentle on the hands and are more natural or organic. If the hand washing agents does not irritate the hands of the health care staff it will not cause them to abandon the policy. Lastly this strategy to ensure every healthcare worker complies to the hand hygiene policies, the staff will have to enforce stricter regulations to ensure that the staff are compelled to adhere to the rules. One way to ensure it can be heavy penalization of the staff that does not adhere to the hand hygiene policy, like monetary penalties and temporary suspension (Song et al., 2013). Applying these well articulated and curated strategies can help in urging the staff to comply with the hand hygiene policies. Implementation challenges: Both the strategies that have been devised in the assignment above will be effective in urging the staff to comply with the hand hygiene policy. However there are some challenges to the implementation of these strategies. First and foremost, a comprehensive educational program with interactive graphics in regular intervals will cost the health care facility a pretty penny. It has to be considered that a health care facility that is large enough recruits a large number of staff regularly ensuring that the entire staffs are privy to the educational programs will cause the health care facility to conduct such interactive and comprehensive trainings very frequently, and that will be detrimental to the financial backbone of the health care facility. Moreover encouraging the staff to attend these educational programs will require the management to provide some attraction, like monetary rewards or employee recognition and appraisals, and this also will be a significant blow to the financial standing of the health care facility. An expenditure of this magnitude will be difficult for the management to overcome and will can compromise the care standards (Squires et al., 2013). The challenges present for the implementation of the second strategy will include investing a large chunk to buying enough hand sanitation supplies that can be evenly distributed all throughout the health care facility. Moreover investing on skin friendly mild anti-microbial washes and soaps will be an expensive effort as well. However, even if we ignore the financial threat to the facility management due to storing up enough supplies of standard quality, there is more (Srigley et al., 2014). Without a set of strict rules and regulations these strategies will not bear any fruit what so ever hence, there is need for a good screening program to ensure that all the staff are complying. This represents a need for the recruiting of a screening team that will monitor and control the compliance to hand hygiene and infection control program in the facility, which will also be a financial drawback to the facility. Lastly, enforcing strict penalties like suspension and fine can initiate job di ssatisfaction and irritation in the staff which can result in decreased staff retention and can hamper the care delivery in turn (Tromp et al., 2012). All these limitations can make the implementation and success of these strategies very difficult to attain. Conclusion: The rates at which the incidence of hospital acquired infection is increasing are ghastly and frightening. Every day the statistics of complication and morbidity related to these infections elevate and decrease the standard of care and the sour the experience of the patients in the health care facility. Studies suggest that the level of dissatisfaction and in the patients and their families are due to the suffering they had to go through for the infections caused under the care and surveillance of the health care facility, it is not only detrimental for the reputation of the health care facility concerned but is also morally distressing as well (Costers et al., 2012). This is the reason why the regulatory authorities in the field of heath care have invested time, resources and effort to improve the rates of hospital acquired infections by enforcing different guidelines and policies. Hand hygiene policy is the one of the most effective policies in avoiding hospital acquired infections in the health care facility; unfortunately this policy is also the most neglected one in the health care facility. The noncompliance of the staff to this policy is due to a number o reasons as discussed above, and there are strategies that improve the level of compliance in the staff. However, these strategies like educational programs and stricter inclusion with easy access come coupled with a horde of challenges that limit the efficacy and success of these strategies. However with a little empathy and effort from both the hospital facility management and the staff, the safety and wellbeing of the patients can be prioritized above all. References: Allegranzi, B., Gayet-Ageron, A., Damani, N., Bengaly, L., McLaws, M. L., Moro, M. L., ... Donaldson, L. (2013). Global implementation of WHO's multimodal strategy for improvement of hand hygiene: a quasi-experimental study.The Lancet Infectious Diseases,13(10), 843-851. Al-Tawfiq, J. A., Abed, M. S., Al-Yami, N., Birrer, R. B. (2013). Promoting and sustaining a hospital-wide, multifaceted hand hygiene program resulted in significant reduction in health care-associated infections.American journal of infection control,41(6), 482-486. Costers, M., Viseur, N., Catry, B., Simon, A. (2012). Four multifaceted countrywide campaigns to promote hand hygiene in Belgian hospitals between 2005 and 2011: impact on compliance to hand hygiene.Euro Surveill,17(18), 20161. Ellingson, K., Haas, J. P., Aiello, A. E., Kusek, L., Maragakis, L. L., Olmsted, R. N., ... VanAmringe, M. (2014). Strategies to prevent healthcare-associated infections through hand hygiene.Infection Control Hospital Epidemiology,35(08), 937-960. Fisher, D. A., Seetoh, T., May-Lin, H. O., Viswanathan, S., Toh, Y., Yin, W. C., ... Peh, R. F. (2013). Automated measures of hand hygiene compliance among healthcare workers using ultrasound: validation and a randomized controlled trial.Infection Control Hospital Epidemiology,34(09), 919-928. Fuller, C., Michie, S., Savage, J., McAteer, J., Besser, S., Charlett, A., ... Jeanes, A. (2012). The Feedback Intervention Trial (FIT)improving hand-hygiene compliance in UK healthcare workers: a stepped wedge cluster randomised controlled trial.PLoS One,7(10), e41617. Hagel, S., Reischke, J., Kesselmeier, M., Winning, J., Gastmeier, P., Brunkhorst, F. M., ... Pletz, M. W. (2015). Quantifying the Hawthorne effect in hand hygiene compliance through comparing direct observation with automated hand hygiene monitoring.infection control hospital epidemiology,36(08), 957-962. Higgins, A., Hannan, M. M. (2013). Improved hand hygiene technique and compliance in healthcare workers using gaming technology.Journal of Hospital Infection,84(1), 32-37. Huis, A., van Achterberg, T., de Bruin, M., Grol, R., Schoonhoven, L., Hulscher, M. (2012). A systematic review of hand hygiene improvement strategies: a behavioural approach.Implementation Science,7(1), 92. Ling, M. L., How, K. B. (2012). Impact of a hospital-wide hand hygiene promotion strategy on healthcare-associated infections.Antimicrobial resistance and infection control,1(1), 13. Momen, K. S., Fernie, G. R., Levchenko, O. I., Hufton, G. C. (2012).U.S. Patent No. 8,237,558. Washington, DC: U.S. Patent and Trademark Office. Morgan, D. J., Pineles, L., Shardell, M., Young, A., Ellingson, K., Jernigan, J. A., ... Perencevich, E. N. (2012). Automated hand hygiene count devices may better measure compliance than human observation.American journal of infection control,40(10), 955-959. Pan, S. C., Tien, K. L., Hung, I. C., Lin, Y. J., Sheng, W. H., Wang, M. J., ... Chen, Y. C. (2013). Compliance of health care workers with hand hygiene practices: independent advantages of overt and covert observers.PLoS One,8(1), e53746. Pincock, T., Bernstein, P., Warthman, S., Holst, E. (2012). Bundling hand hygiene interventions and measurement to decrease health careassociated infections.American journal of infection control,40(4), S18-S27. Scheithauer, S., Eitner, F., Mankartz, J., Haefner, H., Nowicki, K., Floege, J., Lemmen, S. W. (2012). Improving hand hygiene compliance rates in the haemodialysis setting: more than just more hand rubs.Nephrology Dialysis Transplantation,27(2), 766-770. Song, X., Stockwell, D. C., Floyd, T., Short, B. L., Singh, N. (2013). Improving hand hygiene compliance in health care workers: strategies and impact on patient outcomes.American journal of infection control,41(10), e101-e105. Squires, J. E., Suh, K. N., Linklater, S., Bruce, N., Gartke, K., Graham, I. D., ... Tibbo, E. (2013). Improving physician hand hygiene compliance using behavioural theories: a study protocol.Implementation Science,8(1), 16. Srigley, J. A., Furness, C. D., Baker, G. R., Gardam, M. (2014). Quantification of the Hawthorne effect in hand hygiene compliance monitoring using an electronic monitoring system: a retrospective cohort study.BMJ quality safety,23(12), 974-980. Tromp, M., Huis, A., de Guchteneire, I., van der Meer, J., van Achterberg, T., Hulscher, M., Bleeker-Rovers, C. (2012). The short-term and long-term effectiveness of a multidisciplinary hand hygiene improvement program.American journal of infection control,40(8), 732-736.

US History free essay sample

Emancipation increased the power of black men within the family. Black women withdrew from work as field laborers and house servants to the domestic sphere. Church and School Blacks abandoned white-controlled religious institutions to create churches of their own. Blacks of all ages flocked to the schools established by northern missionary societies, the Freedmans Bureau, and groups of ex-slaves. Political Freedom The right to vote inevitably became central to the former slaves desire for empowerment and equality. To demonstrate their patriotism, blacks throughout the South organized Fourth of July celebrations.Land, Labor, and Freedom Former slaves ideas of freedom were directly related to land ownership. Many former slaves insisted that through their unpaid labor, they had acquired a right to the land. Masters without Slaves The Souths defeat was complete and demoralizing. Planter families faced profound changes. Most planters defined black freedom in the narrowest manner. The Free Labor Vision The victorious Republican North tried to implement its own vision of freedom. We will write a custom essay sample on US History or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page Free labor The Freedmans Bureau was to establish a working free labor system. The Freedmans BureauThe task of the Bureau-?establishing schools, providing aid to the poor and aged, settling disputes, etc. -?was daunting, especially since it had fewer than 1,000 agents. The Bureaus achievements in some areas, notably education and health care, were striking. The Failure of Land Reform president Andrew Johnson ordered nearly all land in federal hands returned to its former owners. Because no land distribution took place, the vast majority of rural freed people remained poor and without property during Reconstruction. Sharecropping came to dominate the cotton South and much of the tobacco belt.Sharecropping initially arose as a compromise between blacks desire for land and planters desire for labor discipline. The White Farmer The aftermath of the war hurt small white farmers. Crop-lien system (use of crop as collateral for loans from merchants for supplies) White farmers increased cotton cultivation, cotton prices plummeted, and they found themselves unable to pay back loans. Both black and white farmers found themselves caught in the sharecropping and crop- lien systems. Southern cities experienced remarkable growth after the Civil War. Rise of a new middle class Aftermaths of SlaveryThe Reconstruction-era debates over transitioning from slavery to freedom had parallels in other Western Hemisphere countries where emancipation occurred in the nineteenth century. Only in the united States did former slaves gain political rights quickly. The Making of Radical Reconstruction Andrew Johnson Johnson identified himself as the champion of the honest yeomen and a foe of large planters. Johnson lacked Lincoln political skills and keen sense of public opinion. Johnson believed that African-Americans had no role to play in Reconstruction. The Failure of Presidential ReconstructionJohnnys plan for Reconstruction offered pardons to the white southern elite. Johnnys plan allowed the new state governments a free hand in managing local affairs. The Black Codes Southern governments began passing new laws that restricted the freedom of blacks. These new laws violated free labor principles and called forth a vigorous response from the Republican North. The Radical Republicans Radical Republicans called for the dissolution Of Johnnys State governments, the establishment of new governments that did not have rebels in power, and the guarantee of the right to vote for black men.The Radicals fully embraced the expanded powers of the federal government born of the Civil War. Charles Summer Thatched Stevens Thatched Stevens most cherished aim was to confiscate the land of disloyal planters and divide it among former slaves and northern migrants to the South. His plan was too radical for most others in Congress. The Origins of Civil Rights Most Republicans were moderates, not radicals. Senator Lyman Truthful of Illinois proposed two bills to modify Johnnys policy: Extend the life of the Freedmans Bureau Civil Rights Bill (equality before the law was central; it SOL_Aught to overturn theBlack Codes) Johnson vetoed both bills. Congress passed the Civil Rights Bill over his veto and later extended the life of the F-redeemers Bureau. The Fourteenth Amendment It placed in the Constitution the principle of citizenship for all persons born in the United States and empowered the federal government to protect the rights of all Americans. It did not grant blacks the right to vote. The Reconstruction Act Johnson campaigned against the Fourteenth Amendment in the 1866 midterm elections. In March 1867, over Johnnys veto, Congress adopted the Reconstruction Act, which: Divided the South into five military districtsCalled for creation of new southern state governments, with black men given the vote The Reconstruction Act thus began Radical Reconstruction, which lasted until 1877 . Impeachment and the Election of Grant To demonstrate his dislike for the Ten ere of Office Act, Johnson removed the secretary of war from office in 1868. Johnson was impeached and the Senate fell one vote short from removing him from office. The Fifteenth Amendment Ulysses S. Grant won the 1 868 presidential election. The Fifteenth Amendment was ratified in 1870. It prohibited federal and state governments from denying any citizen the right o vote because of race.Did not extend suffrage to women The Great Constitutional Revolution The laws and amendments of Reconstruction reflected the intersection of two products of the Civil War era-?a newly empowered national state and the idea of a national citizenry enjoying equality before the law. Before the Civil War, American citizenship had been closely linked to race. The new amendments also transformed the relationship between the federal government and the states. The Rights of Women The destruction of slavery led feminists to search for ways to make the promise of free labor real for women.Some feminists (Elizabeth Caddy Stanton, Susan B. Anthony) opposed the Fifteenth Amendment because it did not enfranchise women. The divisions among feminists led to the creation of two hostile womens rights organizations that would not reunite until the sass. Despite their limitations, the Fourteenth and Fifteenth Amendments and the Reconstruction Act of 1867 marked a radical departure in American and world history. Radical Reconstruction in the South The Tocsin of Freedom Among the former slaves, the passage of the Reconstruction Act inspired an outburst of political organization. Blacks used direct action to remedy long- tanning grievances. The union League aided blacks in the public sphere. By 1870, the Union had been restored and southern states had Republican majorities. The Black Officeholder Two thousand African-Americans occupied public offices during Reconstruction. Fourteen elected to U. S. House Of Representatives Two elected to U. S. Senate Carpetbaggers and Scalawags Carpetbaggers were northern-born white Republicans who made their homes in the South after the war, with many holding political office. Scalawags were southern-born white Republicans.Some were wealthy (e. G. , James Acorn, a Mississippi planter) Most had been p-country non-slaveholders before the Civil War and some had been Unionists during the war. Southern Republicans in Power Southern Republican governments established the Souths first state- supported public schools. The new governments also pioneered civil rights legislation. Republican governments took steps to strengthen the position of rural laborers and to promote the Souths economic recovery. The Quest for Prosperity During Reconstruction, every state helped to finance railroad construction.Investment opportunities in the West lured more northern investors than southern investors, and economic development remained weak in the South. The Overthrow of Reconstruction Reconstructions Opponents Corruption did exist during Reconstruction, but it was not confined to a race, region, or party. Opponents could not accept the idea of former slaves voting, holding office, and enjoying equality before the law. A Reign of Terror Secret societies sprang up in the South with the aim of preventing blacks from voting and destroying the organization of the Republican Party. The UK Klux Klan was organized in 1866. It launched what one victim called a reign of terror against Republican leaders, black and white. Example: Collar, Louisiana, massacre (1873) Congress and President Grant, with the passage of three Enforcement Acts in 1870 and 1871 , put an end to the KILL Klux Klan by 1872. The Liberal Republicans The Norths commitment to Reconstruction waned during the 1 sass. Some Republicans, alienated from Grant by corruption in his administration, formed the Liberal Republican Party.Horace Greenly The Norths Retreat The Liberal attack on Reconstruction contributed to a resurgence of racism in the North. The 1873 depression also distracted the North from Reconstruction. The Supreme Court whittled away at Congresss guarantees of black rights. Slaughterhouse Cases (1873) United States v. Cruickshank (1876) The Triumph of the Redeemers Redeemers claimed to have redeemed the white South from corruption, misgovernment, and northern and black control. The Disputed Election and Bargain of 1877 The election between Rutherford B.Hayes (Republican) and Samuel Titled (Democrat) was very close, with disputed electoral votes from Florida, Louisiana, and South Carolina. Congress set up a special Electoral Commission to determine the winner of the disputed votes. Behind the scenes, Hayes made a bargain to allow southern white Democrats to control the South if his election was accepted. The compromise led to Hayss election and the Democrats having a free hand in the South. The End of Reconstruction Reconstruction ended in 1877. It would be nearly a century before the nation again tried to bring equal rights to the descendants of slaves. Introduction: The Statue of Liberty] The Second Industrial Revolution The Industrial Economy By 1 913, the United States produced one-third of the worlds industrial output. The 1880 census showed for the first time that a majority of the workforce engaged in infirming jobs. The growth of cities was vital for financing industrialization. Great Lakes region Pittsburgh Chicago Railroads and the National Market The railroad made possible what is sometimes called the second industrial revolution. The growing population formed an ever-expanding market for the mass production, mass distribution, and mass marketing of goods.The Spirit of Innovation Scientific breakthroughs and technological innovation spurred growth. Thomas Edison Competition and Consolidation The economy suffered prolonged downturns between 1873 and 1897. Businesses engaged in ruthless competition. To avoid cutthroat competition, more and more corporations battled to control entire industries. Between 1 897 and 1 904, 4,000 firms vanished into larger corporations. The Rise of Andrew Carnegie The railroad pioneered modern techniques of business organization. By the sass, Carnegie dominated the steel industry.Vertical integration Carnages life reflected his desire to succeed and his desire to give back to society. The Triumph of John D. Rockefeller John D. Rockefeller dominated the oil industry. Industrial leaders were considered either captains of industry or robber barons. Workers Freedom in an Industrial Age For a minority of workers, the rapidly expanding industrial system created new forms Of freedom. For most workers, economic insecurity remained a basic fact of life. Between 1 880 and 1 900, an average of 35,000 workers perished each year in factory and mine accidents, the highest rate in the industrial world.Class divisions became more and more visible. Many of the wealthiest Americans consciously pursued an aristocratic lifestyle. Thorniest Bubble on conspicuous consumption The working class lived in desperate conditions. The Transformation of the West A Diverse Region The political and economic incorporation of the American West was part of a global process. The federal government acquired Indian land by war and readies, administered land sales, and distributed land to farmers, railroads, and mining companies. Farming in the Trans-Mississippi West More land came into cultivation during the thirty years after the Civil War than during the previous two-and-a-half centuries of American history. Farming was difficult and much of the burden fell to women. As crop production increased, prices fell and small farmers throughout the world suffered severe difficulties during the last quarter of the nineteenth century. The future of western farming ultimately lay with giant agricultural enterprises, as seen in California. The Cowboy and the Corporate West Cowboys became symbols of a life of freedom on the open range.

G.K. Chestertons A Piece of Chalk

G.K. Chesterton's 'A Piece of Chalk' One of the most prolific British authors of the early 20th century, G.K. Chesterton is best known today for his novel The Man Who Was Thursday (1908) and his 51 short stories featuring the amateur detective Father Brown. In addition, he was a master of the essay     called the only literary form that confesses, in its very name, that the rash act known as writing is really a leap in the dark. The word essay comes from the French word essayer, meaning to try or attempt. In the preface to his essay collection Tremendous Trifles (1909), Chesterton encourages us to be ocular athletes: Let us exercise the eye until it learns to see the startling facts that run across the landscape as plain as a painted fence. In this fleeting sketch from that collection, Chesterton relies on two common items brown paper and a piece of chalk as starting points for some thought-provoking meditations. A Piece of Chalk I remember one splendid morning, all blue and silver, in the summer holidays when I reluctantly tore myself away from the task of doing nothing in particular, and put on a hat of some sort and picked up a walking-stick, and put six very bright-colored chalks in my pocket. I then went into the kitchen (which, along with the rest of the house, belonged to a very square and sensible old woman in a Sussex village), and asked the owner and occupant of the kitchen if she had any brown paper. She had a great deal; in fact, she had too much; and she mistook the purpose and the rationale of the existence of brown paper. She seemed to have an idea that if a person wanted brown paper he must be wanting to tie up parcels; which was the last thing I wanted to do; indeed, it is a thing which I have found to be beyond my mental capacity. Hence she dwelt very much on the varying qualities of toughness and endurance in the material. I explained to her that I only wanted to draw pictures on it, and th at I did not want them to endure in the least; and that from my point of view, therefore, it was a question, not of tough consistency, but of responsive surface, a thing comparatively irrelevant in a parcel. When she understood that I wanted to draw she offered to overwhelm me with note-paper. I then tried to explain the rather delicate logical shade, that I not only liked brown paper, but liked the quality of brownness in paper, just as I like the quality of brownness in October woods, or in beer. Brown paper represents the primal twilight of the first toil of creation, and with a bright-colored chalk or two you can pick out points of fire in it, sparks of gold, and blood-red, and sea-green, like the first fierce stars that sprang out of divine darkness. All this I said (in an off-hand way) to the old woman, and I put the brown paper in my pocket along with the chalks, and possibly other things. I suppose every one must have reflected how primeval and how poetical are the things that one carries in ones pocket; the pocket-knife, for instance, the type of all human tools, the infant of the sword. Once I planned to write a book of poems entirely about things in my pockets. But I found it would be too long, and the age of the great epics is past. With my stick and my knife, my chalks and my brown paper, I went out on to the great downs... I crossed one swell of living turf after another, looking for a place to sit down and draw. Do not, for heavens sake, imagine I was going to sketch from Nature. I was going to draw devils and seraphim, and blind old gods that men worshipped before the dawn of right, and saints in robes of angry crimson, and seas of strange green, and all the sacred or monstrous symbols that look so well in bright colors on brown paper. They are much better worth drawing than Nature; also they are much easier to draw. When a cow came slouching by in the field next to me, a mere artist might have drawn it; but I always get wrong in the hind legs of quadrupeds. So I drew the soul of a cow; which I saw there plainly walking before me in the sunlight; and the soul was all purple and silver, and had seven horns and the mystery that belongs to all beasts. But though I could not with a crayon get the best out of the landscape, it does not follow that the landscape was not getting the best out of me. And this , I think, is the mistake that people make about the old poets who lived before Wordsworth, and were supposed not to care very much about Nature because they did not describe it much. They preferred writing about great men to writing about great hills, but they sat on the great hills to write it. The gave out much less about Nature, but they drank in, perhaps, much more. They painted the white robes of their holy virgins with the blinding snow, at which they had stared all day. ...The greenness of a thousand green leaves clustered into the live green figure of Robin Hood. The blueness of a score of forgotten skies became the blue robes of the Virgin. The inspiration went in like sunbeams and came out like Apollo. But as I sat scrawling these silly figures on the brown paper, it began to dawn on me, to my great disgust, that I had left one chalk, and that a most exquisite and essential chalk, behind. I searched all my pockets, but I could not find any white chalk. Now, those who are acquainted with all the philosophy (nay, religion) which is typified in the art of drawing on brown paper, know that white is positive and essential. I cannot avoid remarking here upon a moral significance. One of the wise and awful truths which this brown-paper art reveals, is this, that white is a color. It is not a mere absence of color; it is a shining and affirmative thing, as fierce as red, as definite as black. When, so to speak, your pencil grows red-hot, it draws roses; when it grows white-hot, it draws stars. And one of the two or three defiant verities of the best religious morality, of real Christianity, for example, is exactly this same thing; the chief assertion of religious morality is that white is a color. Virtue is not the absence of vices or the avoidance of moral dangers; virtue is a vivid and separate thing, like pain or a particular smell. Mercy does not mean not being cruel, or sparing people revenge or punishment; it means a plain and positive thing like the sun, which one has either seen or not seen. Chastity does not mean abstention from sexual wrong; it means something flaming, like Joan of Arc. In a word, God paints in many colors; but he never paints so gorgeously, I had almost said so gaudily, as when He paints in white. In a sense our age has realized this fact, and expressed it in our sullen costume. For if it were really true that white was a blank and colorless thing, negative and non-committal, then white would be used instead of black and grey for the funereal dress of this pessimistic period. Which is not the case. Meanwhile, I could not find my chalk. I sat on the hill in a sort of despair. There was no town near at which it was even remotely probable there would be such a thing as an artists colorman. And yet, without any white, my absurd little pictures would be as pointless as the world would be if there were no good people in it. I stared stupidly round, racking my brain for expedients. Then I suddenly stood up and roared with laughter, again and again, so that the cows stared at me and called a committee. Imagine a man in the Sahara regretting that he had no sand for his hour-glass. Imagine a gentleman in mid-ocean wishing that he had brought some salt water with him for his chemical experiments. I was sitting on an immense warehouse of white chalk. The landscape was made entirely of white chalk. White chalk was piled more miles until it met the sky. I stooped and broke a piece of the rock I sat on: it did not mark so well as the shop chalks do, but it gave the effect. And I stood there in a trance of pleasure, realizing that this Southern England is not only a grand peninsula, and a tradition and a civilization; it is something even more admirable. It is a piece of chalk.