Sunday, May 24, 2020
The Importance of Cyber Security - 1093 Words
Internet is a growing source for communication. With so many people online, many have figured out ways to steal from others. Whether it be their Identity, money, or self a-steam, many are ripped of their belongings through the internet. Email and instant messaging are an easy way to not only communicate but send along important Information to one another. The newest and one of the most used, is social media websites, or a website that a profile is created and one can share pictures, thoughts, and message logs. Social media is a great way to keep in touch with friends and family, but because of the increasing use and lack of protection from cyber security, more and more people are becoming victims of cyber bullying, or the teasing and discrimination of others through online sources. The internet not only offers communication tactics, but also ways to keep track of your finances and shop from home. Identity theft through hacking is well known among the ones who risk putting their perso nal banking information online. Because of all the crime, the demand for cyber security is steadily increasing. With job opportunities for people even fresh out of college, cyber security is a job field worth taking a look at. Cyber Security is one of the top job majors college students should consider due to the high increase of Cyber bullying, Identity theft, and Online communication abuse. Cyber Security should be be a job field that college students consider because cyber security is neededShow MoreRelatedImportance of Cyber Security1744 Words à |à 7 Pageslives, our phones, internet, communication, purchases, entertainment, flying airplane, launching missiles, operating nuclear plants, and implicitly, our protection. The more ever-growing technology empower Americans, the more they become prey to cyber threats. The United States Executive Office of the President stated, ââ¬Å"The President identified cybersecurity as one of the top priorities of his administration in doin g so, directed a 60-day review to assess polices.â⬠(United States Executive OfficeRead MoreCyber Defense And Security Issues789 Words à |à 4 PagesUnderstanding cyber defense and security issues such as cyber-crime and cyber-attacks ensure efficient functioning of information systems. Cyber-attacks are real, unexpected and increasing in numbers according to Naumovski and Kenkov (2014) cyber defense is emerging as a high priority with the increased use of information technology. Naumovski et al. (2014) noted that understanding cyber defense and security issues would ensure efficient operation of information systems. Naumovski et al. (2014)Read MoreThe Internet And Its Effects On The Environment1538 Words à |à 7 Pagesthe Canadian government has published ââ¬Å"Canada s cyber security strategy: For a stronger and more prosperous Canadaâ⬠, a strategic platform to secure the Canadian cyberspace. However, although embracing cyber technology and obtain considerable advantages from it, the Canadian cyber security strategy does not reflect as a comprehensive strategic framework. This essay argues that the strategy lacks of substantial elements to deal with a wide range of cyber threats in todayââ¬â¢s modern world. For this reasonRead MorePrevention / Containment Measures For Cyber Threats1406 Words à |à 6 Pages1. Prevention/Containment Measures for Cyber Threats. Protecting classified documents or valuable information is very hard against any kind of cyber-terrorism, there are no universal safeguards. There is no existence of any agreement or policy to define cyber-terrorism. Threats can come from hackers, criminal group or terrorist group; governments use computers and internet to attack without knowing the victims. It is not easy to stop such attacks but not impossible to stop if following basic preventionRead MoreThe Prospect And Challenges Of Cyber Security Insurance922 Words à |à 4 Pages2.0 Introduction This chapter presents the prospect and challenges of cyber security insurance among It practitioners in the United Kingdom based on the literature that had been reviewed in the process of writing this paper. This chapter will draw upon results of earlier studies and reports to provide a theoretical framework to answer the research questions of the paper. 2.1. Cyber security and its importance to the modern lives In line with technological advances and the evolution of the internetRead MoreAmerica And Its Homeland Security Online Essay1587 Words à |à 7 PagesAmerica and Its Homeland Security Online Abstract: Everyday security is provided by the states and federal government. These tasks get more difficult as new technology introduces itself. Cybersecurity is one of the most popular security sectors in todayââ¬â¢s world. There is not only cyberbullying going on in the world. Terrorism can be planned and sent from person to person over the internet. Peopleââ¬â¢s identities are being stole to help carry out these terrorist acts and this is just the being of itRead MoreThe Threat Of Cyber Security1452 Words à |à 6 PagesThe purpose of this briefing is to: â⬠¢ Clarify the importance of cyber security in marketing â⬠¢ Educate employees on the importance of cyber security in the workplace â⬠¢ Explain to marketer why they are targets of cyber security attacks â⬠¢ Educate employees on how they can prevent cyber attacks Informing and educating employees on why cyber-attacks are becoming more prevalent and how to identify and prevent them gives an organization ease of mind. A cyber breach or attack is inevitable, however mitigatingRead MoreThe Impact Of Stuxnet Worm On The World s Nuclear Facilities1340 Words à |à 6 Pagesautomatically activates other copies of the worm on the same network, and it activates its rootkit, which allows it to hide its processes and activity on the local computer as well as the entire computer network. Kaspersky Lab, an international software security group operating in almost 200 countries and territories worldwide, concluded that the attack ââ¬Å"is a one-of-a-kind, sophisticated malware attack backed by a well-funded, highly skilled attack teamâ⬠and that the ââ¬Å"attack could only be conducted withRead MoreInformation Is A Source Of Power In International Relations.967 Words à |à 4 Pagesfunctioning of a state. However, when any state places enough impor tance on a resource of power, that resource becomes a target. An attack on informational structures of a state are cyber-attacks or ââ¬Å"the use of computational technologies in cyberspace for malevolent and destructive purposes in order to impact, change, or modify diplomatic and military interactions between entitiesâ⬠Cyber-attacks are increasingly becoming daily security threats in both private and public sectors of a state. In 2016Read MoreCyber Threats931 Words à |à 4 PagesTOP FIVE CYBER SECURITY THREATS FOR 2012 11 August 2012 ABSTRACT The ten cyber security threats in the IT world are boosts in mobile drives and in security tasks, increased C-suite targeting, growing use of social media that will contribute to personal cyber threats, being already infected, and everything physical can be digital. This paper discusses what these threats are, how to defeat and/or demonstrate proficiency in defeating the cyber threats, and the rising
Monday, May 18, 2020
Americ A Agricultural Society Into And An Industrial Giant
Through out the the centuries America has envolved from a agricultural society into and an industrial giant. Some of the way it has envolved is culturally ,political and economically.America has envolved from a agricultural society into and an industrial giant culturally by immagrantion.America has envolved from a agricultural society into and an industrial giant political. America has envolved from a agricultural society into and an industrial giant culturally by immagrantion.America has envolved from a agricultural society into and an industrial giant economically by mass production. Between 1880 and 1921, more than 23.5 million immigrants entered the Coalesced States. This period is now kenned as the Incipient Immigrants. Prior waves of immigrants had come primarily from northern and western Europe ââ¬â England, Ireland, Germany, Scandinavia, etc. But after 1880, increasingly sizably numbers of immigrants orginated from southern and eastern Europe ââ¬â Italy, Greece, the Balkan countries, Russia, Poland, etc. The majority of these immigrants settled in the cities of the Northeast and Midwest, where they took jobs as inept factory workers and at the same time dramatically changed the ethnic makeup of urban America. These incipient immigrants, many of whom were Catholic or Jewish, were viewed by many native-born Americans as being racially and culturally inferior, and Nativism became an increasingly potent force in American society and politics.I the nineteenth
Wednesday, May 13, 2020
Can the Study of Politics Be Scientific or Not - 606 Words
PL 115 ASSIGNMENT Q. 2 The aim of this essay is to discuss ââ¬Å"Can the study of politics be scientific or not?â⬠and I will give reasons for my arguments. It will be divided into three parts: the first part is the introduction, the second part discusses politics and science then the last part concludes the essay. Keywords: Politics and Scientific DEFINITIONS Politics: There are various definitions of politics. i. Politics is the art of managing conflicts. Conflicts occur at different levels for example between two or more people, between communities and between countries that is when people compete for different positions and when we go to vote. ii. Politics can be understood as power and influence; that is it involves power,â⬠¦show more contentâ⬠¦Refuting the Scientific character of Political Science Maitland: an eminent English writer- observes ââ¬Å"when I see asset of examination questions headed by the words Political Science I regret the question but the titleâ⬠F.W Maitland: collected paper volume 11. Buckle another famous author also observes that ââ¬Å"In the present state of knowledge, politics so far from being a Science is the most backward of all the arts.â⬠(Buckle: History of Civilization Vol. 1 pg. 361). While analysis this statement of buckle the following comment of Dr. Garner on this statement is wo rth noting to his book ââ¬Å"Political Science and Government,â⬠Dr. Garner writes, ââ¬Å"Buckle, however, did not deny a possibility of a political Science what he lamented was that so little attention had been given to the study of the state that as a systematic branch of knowledge it was to crude and undeveloped to be considered a Science.â⬠Dr. Garner: ââ¬Å"Political Science and Government,â⬠pg. 13. Of the same opinion is J.S mill who wrote in 1843, ââ¬Å"it is accordingly but of yesterday that a concept of political Science has existed anywhere but in the mind of, here and there, an isolated thinker, generally very ill-prepared of the realization.â⬠J. S Mill: ââ¬Å"System of logic,â⬠pg. 547. The German scholars have gone to the extent of adopting analytical methods in order to give this subject theShow MoreRelatedWith Respect To The Concerning Question, There Has Been1473 Words à |à 6 Pagesthe Study of Politics is a science. Aristotle descr ibed politics as the ââ¬Å"master scienceâ⬠; Hobbs, Pollock, Bryce and many others have long considered Politics to be a scientific study. Inversely, Mosca, Comte and Maitland, among others, question its eligibility. â⬠¨According to the Oxford Dictionaries, Science can be described as, ââ¬Å"A systematically organised body of knowledge on a particular subjectâ⬠where Science is split into two key types: natural and social. It can be claimed that Politics is aRead MoreIs Politics A Science?1058 Words à |à 5 PagesIs politics a science in the first place? Numerous scholars believe politics is too normative to be considered a ââ¬Å"Scienceâ⬠and that the generalizations made in science cannot be implemented in politics, furthermore, some say it is more of an art than science. Aristotle described politics as the ââ¬Å"Master Scienceâ⬠as it relates to all other disciplines such as economy and philosophy. Personally I had my doubts in the beginning of the c ourse of how much science can be in politics and if it is truly aRead MoreIs the Study of Politics Best Considered a Science or an Art?1733 Words à |à 7 PagesIs the study of politics best considered a science or an art? Since its conception as a formal academic discipline, Politics has existed on the fault line between two great fields of enquiry, the sciences and the arts. During the mid 20th century, with the rise of the behavioural movement, a general trend towards the ââ¬Å"scientificationâ⬠of the study of politics could be observed. The origins of this movement can be traced back to the logical positivism of the Vienna Circle and the writings of AugusteRead MoreWeberian Bureaucracy Essay1417 Words à |à 6 Pagesbureaucracy. Weberââ¬â¢s studies developed more into the bureaucratic aspect, focusing on politics and administration. In his writing Politics as a Vocation Weber defined the state as being an ââ¬Å"entity that possesses a monopoly on the legitimate use of physical forceâ⬠and politics is the sharing of state powers between various groups and the political leaders that wield that power. Weber even wrote that ââ¬Å" Bureaucratic administration means fundamental dominat ion through knowledgeâ⬠As his studies of bureaucracyRead MoreFour Main Theorists Of The Classical Approach To Public Administration738 Words à |à 3 Pageswhich was the Bureaucratic, Scientific, Administrative, and Managerial approach. Each area represented the four main theorists that the classical approach was associated with. Max Webers bureaucratic approach focused on the rational-legal model which viewed bureaucracy from a rational view and argued that bureaucracy is the most efficient and rational way in which one can organize the human activity and that hierarchies are necessary to maintain order. The scientific approach by Taylor accordingRead MoreEssay on Sociology and Social Sciences1144 Words à |à 5 Pagesthe people in a modern society. Answer: 1.Psychology (How humans think influences most, if not all of the social sciences.)à 2.Sociology (This helps figure out how society thinks. If you understand how society thinks, you can improve it.)à 3.Political Science (Politics runs every country.)à 4.History (This helps everybody now which ideas and actions were successful, and which ones were mistakes.)à 5.Economics (Money also runs every country,obviously.)à 6.Anthropology ( Everybody wants toRead MoreFeminist Perspectives On Gender And Science, Why Engage Genomics? Essay1581 Words à |à 7 Pagesgenomics in current discussions of gender and sex is what makes the domain of genomics a point of feminist concern. Historically, science tends to support popular views of sex and gender due to pressures on scientists to produce empirical data that can be interpreted to support or ââ¬Å"proveâ⬠current societal views as correct. Feminists, philosophers and other critical thinkers cannot afford to leave genetics to the geneticists; governments, corporations and other bodies of power will not simply acquiesceRead MoreProblems Of The And Boundary Work1392 Words à |à 6 PagesBoundary Work One of the fundamental areas of study concerning professionals, including lawyers and scientists, is that of professional boundaries (Lamont Molnar). Where are the bounds of the profession? Who is included and who is excluded from the profession? One of the driving questions for scholars of science has been the demarcation problem, that is determining what is and is not included in science (Gieryn 1983). Historically, the social studies of science has divided between internal and externalRead Moreon killing a tree Essay1240 Words à |à 5 Pagesemphasizes on scientific, objective and value free study of political phenomenon. This approach stresses upon the use of empirical as well as scientific methods of study political behavior. This approach shifts its emphasis from the study of the state and government to the day-today problems, activities and behaviour of individuals and groups. Behavioural approach has portraits individuals as center of attention and examines their behaviour, actions and tries to comprehend them through a scientific outlookRead MoreComparative Politics Essay1392 Words à |à 6 Pagesknow no country.â⬠ââ¬â Seymour Martin Lipset. The scholar Guy Swanson once said, ââ¬Å"Thinking without comparison is unthinkable. And, in the absence of comparison, so is all scientific thought and scientific research.â⬠(cited in Ragin, 1992). As such, comparison is necessary for the development of political science. The ââ¬Ëart of comparingââ¬â¢ can be seen as what experimentation is to most sciences ââ¬â the principal and most effective way to test theory. (Peters, 1998) This essay seeks to describe the different
Wednesday, May 6, 2020
Regulation of Oldest Profession Essay - 1243 Words
Pornography and Prostitution have much in common, both include compensated consenting adults engaging in sexual activity; however, pornography is legal, and prostitution is not. Websterââ¬â¢s dictionary defines prostitution as ââ¬Å"the act or practice of engaging in promiscuous sexual relations especially for moneyâ⬠. Although pornography is somehow widely accepted, it is essentially the same concept as prostitution, both involving consenting adults paid to perform sexual acts. While prostitution is controversial, states making prostitution legal, and equal to pornography, would have positive effects on the nationââ¬â¢s economy by making the profession safer, decreasing the crime rate, and helping the government financially. A mounting concern toâ⬠¦show more contentâ⬠¦These individuals argue that the disease testing and condom policies do not work because of the lack of honesty by the prostitute, for want of extra money, and pressure of the ââ¬Å"johnâ⬠(cus tomer) to remain anonymous. According to research by Brents and Hausbeck, both professors of sociology at the University of Nevada: In 1985 and 1986, the Nevada Administrative Code imposed sexually transmitted disease and HIV tests on legal, working prostitutes (NAC Chapter 441A010-A325 and 441A775-A815). The result is that each person who applies for employment as a prostitute must take a blood test for HIV and syphilis and must submit a cervical specimen to be tested for gonorrhea and chlamydia. These tests must be negative before a prostitute can be licensed to beginwork. Every week thereafter while working in a brothel, prostitutes must see local physicians, who conduct PAP smears for gonorrhea and chlamydia and monthly blood tests for syphilis and HIV. If a working girl tests positive for anything other than HIV, she is unable to work until treated, cured, and her physician reinstates her health card. If she tests positive for HIV, she can no longer work as a legal brothel pros titute. (276) Prostitution is an incredibly dangerous job for the men/women that participate, not only by the social stigma placed on them, but also the areas where these ââ¬Å"jobsâ⬠areShow MoreRelatedAdvantages of Legalizing Prostitution1749 Words à |à 7 PagesProstitution is known as the oldest profession and has been around for millenniums, dating back to Roman, Byzantine, Greek and Egyptian empires (Baldwin, 2004). The ancient cultures of those empires dealt with the needs of the group and consequently developed protocols for dealing with sexual relations that have propagated throughout time to the modern era. As a result, prostitution is prominent in society today. When analyzing the sex trade, the factors of cultural precedence, philosophy, religionRead MoreShould Prostitution Be A Victimless Crime?1506 Words à |à 7 PagesThe act of prostitution has been a leading topic of moral and legislative debate for centuries. Sometimes referred to as the ââ¬Ëworldââ¬â¢s oldest pro fessionââ¬â¢ because it dates back to around 2400 B.C., prostitution is the practice of exchanging, selling or trading of sexual acts for payment. Although this service is forbidden amongst the world more often than it is not, the debate of its legalization has remained a heated issue (ProQuest Staff).The legalization of prostitution and whether or not prostitutionRead MoreThe Legal Acceptance Of Prostitution1608 Words à |à 7 PagesThe Legal Acceptance of Prostitution Prostitution is often called the oldest profession in the world. One of the First forms is scared prostitution supposedly practiced among Sumerians. In ancient sources (Herodotus, Thucydides) there are many traces of scared prostitution, starting perhaps with Babylon where each women had to reach once a year the sanctuary of Militia and have sex with a foreigner as a sign of hospitality for a symbolic price. Prostitution is the sale of sexual services (typicallyRead MoreThe World s Oldest Profession For Nothing1613 Words à |à 7 Pagesinherently immoral. It s how you do it that counts. And the reality is that it will happen anyway. It s not called the world s oldest profession for nothing. Why not make it, at the least, safe and productive?â⬠-JEANNETTE ANGELL of A Wellness Perspective on Prostitution, Freedom, Religion, and More, Seek Wellness, Apr. 30, 2005. Prostitution, known as the world s oldest profession, and it exists everywhere. In the event you leave the country, and go to a whole new country, there is a guarantee you wouldRead MoreShould Prostitution Be Beneficial For Our Nation?1176 Words à |à 5 PagesProstitution is one of the oldest occupations of all time. Brothels have always been around since ancient times. So this deviant act is nothing new in the world we live in today. Prostitution shouldnââ¬â¢t be deemed deviant. Prostitution is often said to be the oldest profession, and there is a lot of evidence that this is true. The earliest texts we have reference prostitutes, either sacred ones working for a temple or common street prostitutes. Throughout the Bible, prostitutes played greater or lesserRead MoreProstitution Essay1618 Words à |à 7 PagesProstitution is Sex Work Prostitution may be the worlds oldest profession, and laws prohibiting prostitution may well be the oldest example of government regulation and government sex discrimination. In a free society, however, all such laws are inappropriate because they violate the basic rights and liberties of the individuals involved. In a free society, it makes no sense for the government to be telling people that they cannot charge a fee for harmless services they otherwise are at libertyRead MoreOther Styles of Prostitution1101 Words à |à 4 Pagesorganization declared in 2009 that estimates show that there may be around 270,000 victims of human trafficking within the Union Europea. Labor condicion In some countries, principally in Western Europe (Netherlands and Germany) , whoredom may be a profession ruled by their employees pay their taxes and dont carry such a degraded social image. However, elsewhere within the same setting , the legal and social state of affairs is totally different : in Sverige, Noreg and Iceland four , five half-dozenRead MoreThe Benefits Of Legalizing Prostitution1500 Words à |à 6 Pagesis supposedly the oldest profession in the world. It is legal in some countries, such as the United Kingdom and Germany. However, in the majority of the world, prostitution is illegal. The legalization of prostitution has become a popular dispute between what is morally right and wrong. There would be economic benefits in the amount of revenue that governments generate if prostitution were to become a legal line of work. However, many people are against legalizing a profession that is consideredRead MoreThe Untold Story : Legalization Of Prostitution1308 Words à | à 6 Pageslong overdue because it would have a positive impact on the economy, set programs in place to improve quality of life for the victims/workers of the industry, and provide educative resources to bring awareness to the youth about the worldââ¬â¢s oldest profession. Not a lot of light is shed on prostitution, let alone the sex industry in a state like Nevada where it is legal in 8 counties nor that up to the late 20th century it was a complete normality to visit brothels where customers would pay for sexualRead MoreProstitution Is A Single Right Definition For Prostitution1167 Words à |à 5 Pageslegalized and it mostly has to do with the way we grew up being taught all these things were morally wrong. But we also have to talk about the economic, health, criminal, and social aspects of prostitution. Prostitution is considered the worldââ¬â¢s oldest profession because it has been existent for as long as people could remember. It was around way before there were any governments and laws that determine whether or not itââ¬â¢s allowed, but it was always considered morally wrong. There will always be a demand
Persuasive Essay Topics Pdf - Overview
Persuasive Essay Topics Pdf - Overview Ideas, Formulas and Shortcuts for Persuasive Essay Topics Pdf Always bear in mind an ideal persuasive essay needs to be persuasive. Still, you need to make your topic more specific. When choosing persuasive speech topics, you also need to take into consideration where you could be comfortable. Good persuasive essay topics must be persuasive. Adoption ought to be encouraged. Our qualified academic experts will assist you in finding an ideal persuasive essay topic according to all of your requirements and compose a custom-tailored model answer. The Importance of a Strong Topic To compose a fantastic expository essay, you should select a strong topic. Immigration ought to be limited. There are different kinds of persuasive speech. A persuasive essay outline can be placed on paper for a sort of form. When you've accomplished all 3 pointers, now you can go about choosing the best persuasive speech topics for you. As a way to prevent that from happening, below are some pointers on how best to opt for the greatest persuasive speech topics. Furthermore, the students are expected to incorporate the perfect references and format the speech accordingly. All students ought to have a year studying abroad. Most students aren't able to reference the persuasive speech employing the right referencing style. The sort of topic the students select determines the caliber of the paper. Persuade your friend to see the movie you desire. Your audience is full of individuals who must go back to their workplaces promptly. Reality television programmes have to be removed from public life. MP3 music needs to be free. Try to remember, whatever you select will have a significant effect on the total consequence of your article. Don't forget your evidence must attract reason. The retirement age should be raised. The legal drinking age should be raised. Year round school isn't a good idea. If you've ever taken an on-line class, you understand how different it can be from a standard face-to-face course. On the flip side, some argue that the price of college leaves students with crippling debt they'll never have the ability to repay. The school day ought to be shorter. Vital Pieces of Persuasive Essay Topics Pdf School should occur in the evenings. Students ought to be permitted to pray in school. Children ought to be able to use cellphones in school. They should be required to read more. Even though folks are generally considered adults at age 18, research implies that the adolescent brain isn't fully developed until age 25. Some feel parents ought to be allowed to provide permission for their minor children to have tattoos, since they are making the decision for their own children. Parents of bullies should need to pay a fine. A minumum of one parent should work at home. What Is So Fascinating About Persuasive Essay Topics Pdf? The majority of the details for the outline needs to be concentrated on the principal body. You might have to visit the library or interview those who are experts on your topic. Though people believe education is a correct and will make society, generally, a better place for everybody, others feel there's no authentic means to provide a free college education as colleges would still must be funded (likely through tax dollars). With our customized essay offer, you can be certain to find any sort of essay help you are searching for. As an example, writers who have less one year experience may not have the ability to provide persuasive speech. It's highly important to stay informed about the present events. Every time a civic club invites you to speak, you get a marvelous chance to interact with community and company leaders. Most entrepreneurs do not stay in contact and as a consequence they lose the possible client. So, students need to be able to pick an effortless topic in order to have the ability to write excellent work. For example, the students find it difficult to choose the most suitable topic.
Food Science for Microwave Heating of Food - myassignmenthelp
Question: Discuss about theFood Science for Microwave Heating of Food. Answer: Introduction Microwave oven is one of the biggest revolutions in the food technology. The modern cooking as well as lifestyle is heavily dependent on the microwave oven. The oven can not only heat up the food, but it can cook also using the microwave energy, which is electromagnetic radiation. The instrument acts very fast and efficiently as it transfers the energy to all the molecules inside the food, and with the help of the water content present in the food, it gets heated evenly (Gould 2012). History of microwave oven goes back to the time of World War II. Dr. Percy Spencer, an American electrical engineer, first found that electric waves of the radar technology can heat the food. He founded the first commercially available microwave oven and named it Radarange (Chen et al. 2014). In 1967, Amana Corporation invented the first countertop microwave oven (Regier, Knoerzer and Schubert 2016). The microwave oven has gone through many technological changes in the past fifty years. The purpose of th is report is to highlight the impact of the radiation on human health. Problem statement It is a matter of debate for long that, since, the oven applies highly powerful radiation on the food; it activates many different types of bacterias and may change the nature of the nutritional elements in the food, which may not be good for health. Hence, whether the food, heated in microwave oven, is nutritional and good for health is to be addressed in this report. Objectives of the report The objectives of the report are to find out the pros and cons of the microwave heating of the food and whether the powerful electric radiation is harmful for the human health. The possible solution of the problem is to use ultrasound for food processing and preservation. Body and discussion Overview of current developments/advances in the microwave heating technology Microwaves are a part of the electromagnetic waves with a frequency ranging between 300 MHz and 300 GHz, corresponding to the range of wavelength between 1mm to 1m (Datta and Rakesh 2013). In the food processing activities, microwaves are applied for tempering, drying, cooking, defrosting frozen food, baking and sterilization. Since its invention, the technology of microwave heating has become very much advanced. Initially the machine only had the capacity to heat the food. Later on, the advancement of technology enabled the options for cooking, grilling and baking too. In the initial stage, the high frequency radio waves were generated through vacuum tube radio transmitters, which were used in microwave ovens (Gould 2012). Overtime, short waves were used through shortwave transmitters. Lower frequency dielectric heating is similar to induction heating, having the effect of electromagnetic heating, with near-field effects existing in an electromagnetic cavity. This cavity is quite sm all compared to the wavelength of the electromagnetic field. In the modern microwaves, the dielectric heating technology with radio frequency (RF) heating is used. In these technology, lower frequency radiation is used which has a wavelength small relative to the cavity and it affects the polarized molecules in the food by a quickly alternating electric field (Meda, Orsat and Raghavan 2017). Developments in process design Process design refers to the activity for determination of the workflow, equipment requirement and implementation needs for a specific method or process. The process design of a microwave oven is illustrated in the figure below. Figure 1: Process design of a microwave oven (Source: Sce.uhcl.edu 2013) Equipment developments A microwave oven consists of the following equipments. A high voltage source of power, in form of simple transformer or electric power converter, passing the energy to magnetron; high voltage capacitor, which is connected to the magnetron and the transformer and to the chassis via a diode; a cavity magnetron, converting the high voltage energy into the micro radiation; microcontroller, which is a magnetron control circuit; short wave guide, metallic cooking chamber, a turntable and a digital or manual control panel (Puligundla et al. 2013). The design of the machine has transformed quite rapidly in the past few years, when people started to use it in their households. The size has become compact and the new machines also offer autocook options with preloaded combination of time and temperature for specific recipes and convection heating technology (Sun 2012) New applications in food processing / preservation The food industry is now starting to adopt new technologies for food processing and preservation. New research studies have found that application of ultrasound technology has been beneficial for the processing and preservation of food. Ultrasonication is referred to as the application of the high intensity waves of sound at the frequencies between 16 kHz and 100 MHz (Majid, Nayik and Nanda 2015). In the food industry, the ultrasound is applied for microbial inactivation along with foaming, defoaming, degassing, deaeration, cooking, freezing and crystallization, drying, meat tenderizaton, filtration, brining, pickling and marinating, extraction, homogenization or emulsifying, fermenting, cutting with ultrasonic knife, cleaning, and enzyme inactivation (nver 2016). It has been seen that ultrasound has been effective in many traditional food processing and preserving operations and innovative appliances and equipment have been developed to implement the new technology. This technology helps in reducing the time of food processing as it delivers high reproducibility of food, reduces the food processing cost, simplifies the particle manipulation resulting in higher purity of the food product using very less time than the traditional food processing systems (Jambrak and Herceg 2014). This technology has some advantages, such as, effective micro-mixing, mass transfer of faster energy, reduction of thermal and concentration gradients, selective extraction, faster start up, reduced temperature, reduced size of equipment, increased production and elimination of the steps of the processes. The processing and preserving steps performed under this technology are thought to be affected partly by the cavitation phenomena and the mass transfer enhancement (Chemat, Huma and Khan 2011). However, application of the ultrasound technology also has some disadvantages. According to Tang (2015), production of free radicals can occur, which can damage the food and its nutritional value. Application of this technology requires high level of expertise and highly efficient appliances as selection of appropriate amplitude, temperature, power, intensity, time and pressure is extremely critical to get the desired result. Effect on food quality and safety It has been a matter of debate for long that if the food heated or cooked in the microwave is good for health. The biggest concern is if the heating process kills the nutrients of the food items. The technology uses shorter radio waves to cook or heat the food, which are quite selective as they affect only the water and few other molecules which are electrically asymmetrical, with one end positively and the other end negatively charged. The microwaves make these molecules vibrate and build up the thermal energy faster. Regarding the question of killing the nutrients in the food, it is found that, some nutrients, especially, vitamin C breaks down very easily when heated; and since, microwaves are shorter, they help in preserving those nutrients (Ranadheera et al. 2017). Similarly, in case of vegetables, when they are boiled in water or fried, some of the nutritional value is washed out, but when steamed in microwave oven, the easily breakable good nutrients of the food do not wash awa y (Tang 2015). The best way to retain the food nutrients is to cook them quickly and heat them in a very short span of time by using very little amount of liquid. Microwave provides this scope, which is beneficial for health. However, the food can lose its nutritional value from the microwaves also if it is not cooked using the right amount of temperature. Different types of food require different time and temperature and hat needs to be maintained. For example, raw fish, meat and eggs require minimum 60 degree centigrade to be safe for health while the vegetables require less temperature (Regier, Knoerzer and Schubert 2016). Microwave heating of food has a major challenge of unevenness in the heating of food, as the temperature is distributed unevenly depending on the shape of the food item. This causes a potential safety issue. The disease causing bugs can only be killed through microwave when the correct combination of temperature and time is applied throughout the whole portion of the food. Temperature above 60 degree centigrade can kill all bugs known to produce food-borne illness, while some toxins produced by those bugs can be heat tolerant and stay in the cooked food even after applying the correc t combination of time and temperature (Chandrasekaran, Ramanathan and Basak 2013). Hence, appropriate process of storing the food is important to retain the nutritional value. Conclusion Microwave oven has become a household name in the past few years. It has been a revolutionary invention for the food industry for cooking food using shorter radio waves. It has been found that microwaves are good for preserving the nutritional values of the food as it involves very short span of heating and shorter radio waves. However, for high risk food items, such as, meat, fish and eggs, the combination of the time and temperature is critical, which might not produce the desired result of high nutritious food. New technologies, such as, ultrasound, are being developed, which may be a substitute for the microwave heating in future. However, with the advancement of technology, microwave ovens are improving and are expected to be more widely used in the food industry and in households. References Chandrasekaran, S., Ramanathan, S. and Basak, T., 2013. Microwave food processingA review.Food Research International,52(1), pp.243-261. Chemat, F., Huma, Z. and Khan, M., 2011. Applications of ultrasound in food technology: Processing, preservation and extraction.Ultrasonics Sonochemistry, [online] 18(4), pp.813-835. Available at: https://www.sciencedirect.com/science/article/pii/S1350417710002385 [Accessed 31 Mar. 2018]. Chen, J., Pitchai, K., Birla, S., Negahban, M., Jones, D. and Subbiah, J., 2014. Heat and mass transport during microwave heating of mashed potato in domestic ovenmodel development, validation, and sensitivity analysis.Journal of food science,79(10). Datta, A.K. and Rakesh, V., 2013. Principles of microwave combination heating.Comprehensive Reviews in food science and food safety,12(1), pp.24-39. Gould, G.W., 2012.New methods of food preservation. Springer Science Business Media. Jambrak, A. and Herceg, Z., 2014. Application of Ultrasonics in Food Preservation and Processing.Conventional and Advanced Food Processing Technologies, [online] pp.515-536. Available at: https://onlinelibrary.wiley.com/doi/10.1002/9781118406281.ch21 [Accessed 31 Mar. 2018]. Majid, I., Nayik, G. and Nanda, V., 2015. Ultrasonication and food technology: A review.Cogent Food Agriculture, [online] 1(1). Available at: https://www.tandfonline.com/doi/full/10.1080/23311932.2015.1071022 [Accessed 31 Mar. 2018]. Meda, V., Orsat, V. and Raghavan, V., 2017. Microwave heating and the dielectric properties of foods. InThe Microwave Processing of Foods (Second Edition)(pp. 23-43). Puligundla, P., Abdullah, S., Choi, W., Jun, S., Oh, S. and Ko, S., 2013.Potentials of Microwave Heating Technology for Select Food Processing Applications - a Brief Overview and Update. Food Processing Technology. 4(11) Available at: https://dx.doi.org/10.4172/2157-7110.1000278 [Accessed 31 Mar. 2018]. Ranadheera, S., Mellor, D., Naumovski, N. and McConchie, R., 2017.Health check: is it safe to microwave your food?. [online] The Conversation. Available at: https://theconversation.com/health-check-is-it-safe-to-microwave-your-food-66776 [Accessed 31 Mar. 2018]. Regier, M., Knoerzer, K. and Schubert, H. eds., 2016.The microwave processing of foods. Woodhead publishing. Sce.uhcl.edu, 2013.Architecture Design. [online] Sce.uhcl.edu. Available at: https://sce.uhcl.edu/whiteta/sdp/architectureDesign.html [Accessed 31 Mar. 2018]. Sun, D.W. ed., 2012.Thermal food processing: new technologies and quality issues. CRC Press. Tang, J., 2015. Unlocking potentials of microwaves for food safety and quality.Journal of food science,80(8). nver, A., 2016. Applications of Ultrasound in Food Processing.Green Chemistry Technology Letters, 2(3), pp.121-126 [Accessed 31 Mar. 2018].
Tuesday, May 5, 2020
Alfred Nobel Essay Example For Students
Alfred Nobel Essay The inventor of dynamite was a very important roll to take part in. The ultimate inventor of it was a mane named Alfred Nobel. Before dynamite, miners had to use nitrogen to blow holes in rock and other things. However it is too volatile and can explode incredibly easily. Alfred changed all this. nbsp;Alfred Nobel was born on October 21st 1833 in Stockholm. He studied their until1842 when his family moved to St. Petersburg in Russia. Since his father was an influential inventor and industrialist the family moved from country to country. Alfred gained the fluency in 5 different languages, Swedish, Russian, English, French, and German, but was always proud of his Swedish Background. In his teens his father sent him to learn chemistry in France. He gained interest in explosive nitroglycerin. And studied until he founded the first ever nitroglycerin factory in the world, but found it was too volatile to work with, and too many miners were dying using it. He began experimenting on how to control the substance. He wanted something that could absorb the nitroglycerin and not still have the same power. He Found that a substance called Kieselguhr. This substance consisted of (diatomeus earth) marine organisms diatoms. This way the explosive could be transported easily and detonated from a safe distance. It saved laves and time. He would name it Dynamite and got a patent for it in 1867. Throughout his life he had poor health but was not worried about it because he expected many advances in medicine. He once experimented with his theories on blood transfusions. These attempts failed and was back on with his chemistry. From an early age Alfred had written and read quite a bit and he had very good writing skills. He wrote many poems and even a play or two only to destroy almost all of them. By his death in 1896 he had established companies in some ninety locations in twenty countries and earned over SEK 31.5 million. His will was made by himself with no legal help because he learned in the past not to like or trust lawyers. Almost all of his money was to be divided into five equal parts and distributed in the form or prizes to those who during the preceding year have conferred the greatest benefit on mankind. Physics, chemistry, physiology or medicine, literature, and peace. His family had many rejections to this but it still went through. It is sure that Alfred Nobel contributed a great deal to chemistry and the world and has a large diversity of achievements. He lived an unhealthy life only to live a healthy afterlife. Many people will benefit from the Nobel prizes including such people as Mother Theresa and Ernest Rutherford. It is a good deed and will keep the human race alive just a little longer if people are this smart.
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