Tuesday, October 29, 2019
Communicating the message Essay Example | Topics and Well Written Essays - 1000 words
Communicating the message - Essay Example y are launching their adverts an example, a campaign committed to facebook users who will have a duty to read the adverts and also influence others to read it. With this advertisers can give out their offline conversations data to all that want to see it. As a company, facebook claims that the adverts should be measured by a click for each advert Mr. Brad Smith the vice president of facebook complain that the measurements used does not really describe the precise representation of what an advert has to relay, this has made it difficult to establish the literal result of digital marketing stands to be on the bottom-line of the total brand. In the long run, the company would have contributed in the creation and the introduction of mechanism used in advertisement on facebook that would make a longtime impact on people on the brand of the product and its market price (Chung, 2015). Mr. Brad says that the industry is not up to date with the evolving digital landscape; he also admits that facebook advertising is not only about clicks or engagement, it is also about lifts. , Booke Robinson the associate director at the institute of Mindshare in Toronto, also shares that facebook can be relied on as a connector in all aspects of purchasing c hannels even though the advertisements shared should make us want to learn more. The advertisers using facebook have their own share of problems as they have to content with the changing of sites in the modern networks. He also noted that face book is not only a community builder, but a channel used to reach more consumers to buy goods. Stratfordââ¬â¢s target was to get the new patrons with new media by the spring. It was through facebook that the Stratford Festival took place for five consecutive days and resulted to the grand annual April fools sale. The company wanted to sale their items to one group but ended up selling to everyone who came on facebook. Experienced is influenced by the appearance and features of a product.
Sunday, October 27, 2019
Cyber Warfare: the Future of War
Cyber Warfare: the Future of War CHAPTER I INTRODUCTION Karl von Clausewitz defined war as an act of violence intended to compel our opponent to fulfill our will In order to attain this object fully, the enemy must be disarmed, and disarmament becomes therefore the immediate object of hostilities. At the end of the second millennium, this classification no longer describes the full spectrum of modern warfare. In the future, we will have the prospective to make war without the use of violence and fulfill the second half of von Clausewitzs definition-with software alone. Todays software intensive systems make this probable. Cyber describes systems that use mechanical or electronic systems to swap human control. Cyber warfare can be executed without violence and therefore the reliance on software intensive systems-cyber systems-can make nations exposed to warfare without violence. What is Cyber? Terms with cyber used as prefix are currently in vogue not only among some visionaries and technologists seeking new concepts, but even by the man in the street, and each has its own connotation. The term cyber is from Greek root kybernan, meaning to steer or govern and a related word Kybernetes, meaning pilot, governor, and/ or helmsman. Norbert Weiner first introduced the prefix in the 1940s in his classic works creating the field of cybernetics (which is related to cybrenetique, an older French word meaning the art of government). Cyber, in fact has been the most acceptable term due to the reason that it bridges the gap between information and governance, the two inseparable facets of control. The prefix therefore, is freely used in the following: Cyberspace. Originally coined by William Gibson in his science fiction novel Neuromancer, published in 1984, and defines it as that position within the computer where electronic activity / communication takes place. He further describes it as a place of unthinkable complexity. The term has given rise to a vocabulary of cyberterms such as cybercafes (cafes that sell coffee and computer time), cybermalls (online shopping services) and cyberjunkies (people addicted to being online). Cybernetics. It is the science of communication and control, which interfaces a monitor (human brain or an electronic machine) to other parts of a system. The function being, to compare what is happening in the system, to what should have happened and then draw the difference, which is passed on to the control system for rectification (feedback). It applies equally to organisations, machines and organisms. Cybernetics is also used to describe a general analytical approach to control, communication and other system technologies and attempts to link engineering disciplines with the related work of social scientists through the unifying threads of feedback in its most general aspects and through its interest in transfer of information. Cyberwar. A RAND Corporation synonym for information warfare, it is also sometime called netwar. Another school considers it as knowledge related conflict at the military level. However, Denis Quigley comes close by designating it as control warfare or leitenkreig in German. Cyberwar will be discussed more in detail later in the Study. Cybernation. Loosely used, it implies digitisation of various systems of an arrangement/organisation or super systems, where electronics links humans to machines, thereby immensly amplifying the human capabilities. It, in its most basic form, would indicate electronic automated management of information and knowledge. Cyber warfare (CW). It is a relatively new addition to the glossary of warfare. With the escalating use of computers in military and government, there has been a growing awareness of both a new susceptibility in national infrastructure and a new method of attacking ones enemies. There is the potential of using information systems to protect, control or attack information networks. CW could mean winning wars without firing shots, the shutting down of entire national infrastructures at the push of a button, and the complete exploitation or destruction of an enemys communication networks. It could mean threats from across the world by states with no ability to launch a conventional attack, or attacks by non-state actors using cheap laptops. There has also been talk of super-viruses shutting down nations, and how a disgruntled individual or small group could wage a war on a nation. CW is the new wonder weapon, and the new unknown threat. However, the concept of CW, and the technology on which it relies, is beset by vague depictions of the dangers it presents, or the benefits it offers. CW is conceptualised by security expert Amit Yoran, cyber-security chief at the US Department of Homeland Security and vice president of computer corporation Symantec, as the future primary theatre of operations. There is a consensus that CW is something noteworthy, but it is not clear if this consensus extends to a common understanding of what CW actually is. It is so new that there is no standard definition to describe it. This leads to one of the most frequent confusions regarding cyber warfare: its relation to Information Warfare (IW). IW is not unproblematic in definition, but can be understood as the offensive and defensive use of information and information systems to deny, exploit, corrupt, or destroy, an adversarys information, information-based processes, information systems, and computer-based networks while protecting ones own. While IW covers the territory of cyber warfare, it also covers a much broader mandate. Electronic (cyber) communication is only one aspect of IW, which includes all information operations in a conflict. Chinese strategist Sun Tzu and Napoleonic strategist Carl von Clausewitz referred to information operations, and the importance of such operations in war. IW predates electronic communication, and is not interchangeable with cyber warfare for this reason. CW involves units organized along nation-state boundaries, in offensive and defensive operations, using computers to attack other computers or networks through electronic means. Hackers and other individuals trained in software programming and exploiting the intricacies of computer networks are the primary executors of these attacks. These individuals often operate under the auspices and possibly the support of nation-state actors. In the future, if not already common practice, individual cyber warfare units will execute attacks against targets in a cooperative and simultaneous manner. Analyzing the Threat. In 2007, a denial-of-service attack was launched every 53 minutes. The 2007 FBI/Computer Security Institute study indicated that loss of revenue attributed to DDoS (dedicated denial of service) was approximately US$90,000 an hour for a retail catalog sales company. Malware is a common cyber-weapon. Malware (short for malicious software) is a computer program designed with malicious intent. This intent may be to cause annoying pop-up ads with the hope you will click on one and generate revenue, or forms of spyware, Trojans and viruses that can be used to take over your computer, steal your identity, swipe sensitive financial information or track your activities. At least five new pieces of malware emerge every two minutes, according to Kasperskys Internet Security Lab. One critical measure I monitor regularly is the number of significant events reported to Hackerwatch.Org. At the time Im writing this, in the past 24 hours, there have been more than 8 million sign ificant incidents reported. The warning signs are there, but the question remains: Are we smart enough to prepare? A key premise of this paper is that information processing-whether by equipment (computers) or by humans-is becoming a center of gravity in future warfare. Although there is much debate on the reality of the CW threat, the growing number of computer intrusions on government and non-government systems substantiate the fact that the threat is very real. The growing dependency on information and information based technologies have made us very vulnerable to hostile attacks Hence, our immediate goal must be to both imagine and define how foreign cyber attack capabilities might threaten information networks in India and what potential effects they might have. METHODOLOGY Statement of Problem This paper seeks to study and analyse the use of cyber warfare in future conflicts its implications on national security. To suggest Indias response to these cyber threats by outlining a clear, well defined cyber security strategy and suggest measures to safeguard own national security. Hypothesis As information systems permeate in military and civil lives, a new frontier is being crossed The Information Age- which will define the future wars. Cyber Warfare has become central to the way nations fight wars and is the emerging theatre in which future conflicts are most likely to occur. Cyber warfare will take the form of a devastating weapon of the future battlefield which will be integrated in the War fighting Doctrines of nations across the world. Justification of Study The premise of cyber warfare is that nations and critical infrastructure are becoming increasingly dependent on computer networks for their operation. Also as armies around the world are transforming from a platform centric to a network centric force there is increasing reliance on networking technology. With all the advantages of such connectivity come unprecedented challenges to network security. Threats to information infrastructure could be in the form of destruction, disclosure, modification of data and/or denial of service. A hostile nation or group could exploit the vulnerabilities in poorly secured network to disrupt or shut down critical functions. The protection of our information resources information assurance, will thus be one of the defining challenges of national and military security in the years to come. To take advantage of Information Technology revolution and its application as a force multiplier, the Nation and army in particular needs to focus on Cyber Security to ensure protection / defence of its information and information system assets. Many will argue that defence and intelligence computer systems of most countries including Idia are air gapped and thus, isolated from the Internet. It may appear convincing that by air gapping the networks and using superior technology, the risk may be reduced. However, this will not provide fool proof security. With the proliferation of technology at an astronomical rate, the threat of cyber terrorism will only increase. The air gapped networks are vulnerable from insiders, disgruntled employees and moles planted or recruited by cyber terrorists or their sympathisers to cause the intended damage. A cyber terrorist may impersonate a computer technician and call individuals within the targeted organisation to obtain information to penetrate a system. Once in possession of legitimate log on information, cyber terrorists will have Iegal access to a system and can insert viruses, trojan horses, or worms to expand their control of the system or shut it down. In Russia, hackers used a gas company employee to plant a trojan horse which gave them control of the nations gas pipelines. It is against this backdrop that it becomes imperative as a soldier to understand cyberspace, the threat that it poses and to suggest some steps in order to minimise, if not eliminate the menace that it would cause. Scope This study concentrates on the evolution of cyber warfare and the giant leaps that it has taken in the past decade. The entire spectrum of cyber conflict, including threat reality of cyber warfare being used as a potent and devastating weapon of the future battlefield has been covered. Further the study outlines the cyber warfare capabilities of select nations and how vulnerable India is to these threats. Finally the report outlines a cyber security strategy and recommendations for combating the cyber warfare threat in the 21st century. Methods of Data Collection The data has been collected through various journals, seminar papers and certain books on the subject. Some material has also been downloaded from the Internet. A bibliography of sources is appended at the end of the text. Organisation of the Dissertation It is proposed to study the subject under following chapters: Chapter I Introduction and Methodology. Chapter II The Future of Warfare. Information Revolution and Warfare. Defining Cyberwar. Evolution of Cyber Warfare. Chapter III Global Threat in Cyberspace. Threats in Cyberspae. How Real Is the Threat? Spectrum of Cyber Conflict. Recognition of the Cyber Warfare Threat. Chapter IV Combating the Threat. How Vulnerable are We? Cyber Security: A Few Initiatives. Def Cyber Warfare. Cyber security Strategy. Chapter V Conclusion. The Digital Battlefield. Recommendations. CHAPTER II THE FUTURE OF WARFARE So it is said, if you know others and know yourself, you will not be imperiled in a hundred battles; if you dont know others, but know yourself, you will win one and lose one; if you dont know others and dont know yourself, you will be imperiled in every single battle. -Sun Tzu Will conventional warfare remain the custom for the future or will a new wave of warfare emerge? Down through the corridors of time, wars have been fought for various reasons. Conflict arose from regional instabilities, economic and social perils, and religious animosities. In their book, War and Anti-War: Survival At The Dawn of The 21st Century, Alvin and Heidi Toffler categorize the progression of warfare into three stages or waves: agrarian, industrial, and informational. While some areas of the world still remain in the agrarian realm and some others have advanced to the industrial state, a few have broken out into a completely new era-the information age. Information Revolution and Warfare If you know the enemy and know yourself, you need not fear the result of a hundred battles .If you know yourself but not the enemy, for every victory gained you will also suffer a defeat. If you know neither the enemy nor yourself, you will succumb in every battle. This extract comes from the 6th century BC Sun Tzus The Art of War and is still as compelling today as it was two and a half millennia ago. As a matter of fact, it is in all probability safe to say that knowledge and information about ones adversary have a greater impact now than they have had at any other point in the history of warfare. At the same time, critical information is now often stored electronically in spaces reachable from the Internet, which means there is a prospective for it to leak out to ones adversary, or for the opponent corrupting it in order to affect ones decision making capabilities. There is no standardised definition of Information Warfare. However it has been defined as Actions taken to achieve information superiority by affecting adversely information, information based processes, information systems and computer based networks of the adversary, while protecting ones own information. An aim of warfare always has been to affect the enemys information systems. In the broadest sense, information systems encompass every means by which an adversary arrives at knowledge or beliefs. A narrower view maintains that information systems are the means by which an adversary exercises control over, and direction of fielded forces. Taken together, information systems are a comprehensive set of the knowledge, beliefs, and the decision making processes and systems of the adversary. The outcome sought by information attacks at every level is for the enemy to receive sufficient messages that convince him to stop fighting. Information Warfare is a form of conflict that attacks information system directly as a means to attack adversarys knowledge or beliefs. Information Warfare can be prosecuted as a component of a larger and more comprehensive set of hostile activities a net war or cyber war or it can be undertaken as the sole form of hostile activities. Most weapons, a word used to describe the lethal and nonlethal tools of warfare only have high utility against external adversaries. While most often employed against external adversaries, many of the weapons of information warfare are equally well suited for employment against internal constituencies. For example, a state or group cannot use guns or bombs against its own members; however, the weapons of Information Warfare can be used, have been used, and very likely will be used against both external and internal adversaries. Information warfare as defined by Martin Libicki has seven components: Command and Control Warfare. Intelligence based warfare. Electronic Warfare. Psychological Operations. Hacker Warfare. Economic Information Warfare. Cyber Warfare. This concept of seven components is universally recognised today, as it encompasses the entire spectrum that Information Warfare offers. Besides, it strongly argues that Information Warfare is not exclusively a military function and various actors viz. the media, private industry and civil society including civilian hackers play a key role in building a nations capability to wage Information Warfare. The role of private industry has gradually been acknowledged as cutting edge information technologies become increasingly pervasive in sensors and weapon systems. The information systems while making the military more efficient also render it vulnerable to attacks on the systems itself. Winn Schwartau, also known as the Civil Architect of Information Warfare has defined Information Warfare in this very context: Information Warfare is a conflict in which information and information systems act as both the weapons and the targets. As far as the Indian viewpoint on Information Warfare is co ncerned, history amply reveals that information was essentially viewed as a strategic resource. Kautilya, the great strategist of the Maurya period, strongly advocated the need of obtaining accurate information about the enemy forces and plans of action. In fact, he is considered to be instrumental in the victory of the Mauryans and placing Chandragupta Maurya on the Magadha throne. His astute thinking on warfare and statecraft is portrayed in the famous treatise Arthshastra. While postulating that war may not always be the right option, Kautilya espoused the importance of information and knowledge in winning wars. Information Superiority and Cyber Warfare. Information Technology is a double edged weapon. It provides vast opportunities but simultaneously introduces new vulnerabilities and threats, which may arise through computers, content and connectivity or, to put it differently, hardware, software, information and networks. Information superiority over our adversaries including militant and terrorist outfits is very essential. Non Lethal information weapons can black out communication systems, destroy valuable data and cripple the nation. Therefore, we have to act faster than any adversary. This requires defensive as well as offensive cyber warfare capabilities. Cyber warfare can be a full fledged war and vital infrastructure shall get targeted. To handle cyber wars, highest national level decision making is required, in real time and with full fall back options. For this purpose, basic building blocks include excellent monitoring tools for network traffic, web sites and databases, intrusio n detection, firewalls, encryption and decryption algorithms, public key infrastructure and remote access facilities. Offensive cyber warfare spans computer crimes and information terrorism. Everyone is under threat telephone, power supply, banks, transport, and the day to day needs. lt is important to create tools, awareness, and structures to assess threats to information resources, including military and economic espionage computer break-ins, denial-of-service, destruction and modification of data, distortion of information, forgery, control and disruption of information flow, electronic bombs, etc. ln essence, the thrust of the initiatives must lead to information assurance like life assurance. Defining Cyberwar Cyber Warfare. It is the sub-set of information warfare that involves actions taken within the cyber world. There are many cyber worlds, but the one most appropriate to cyber warfare is the Internet and related networks that share media with the Internet. Cyber Warfare as related to defence forces refers to conducting of military operations according to information related doctrine. It means disrupting or destroying information databases and communication systems. It means trying to know everything about the enemy while keeping the adversary from knowing much about oneself. It means turning the equilibrium of information and knowledge in ones favour especially if the balance of forces is not. It means using information so that less capital and labour may have to be expended. Cyberwar refers to conducting, and preparing to conduct, military operations according to information-related ideology. It means disrupting if not destroying the information and communications systems, broadly defined to include even military culture, on which an adversary relies in order to know itself: who it is, where it is, what it can do when, why it is combating, which threats to counter first, etc. It means trying to know all about an opponent while keeping it from knowing much about oneself. It means turning the balance of information and knowledge in ones favour. This form of warfare may involve diverse technologies-notably for C3I; for intelligence collection, processing, and distribution; for tactical communications, positioning, and identification-friend-or-foe (IFF); and for smart weapons systems-to give but a few examples. It may also involve electronically blinding, jamming, deceiving, overloading, and intruding into an adversarys information and communications circuit s. Yet cyberwar is not simply a set of measures based on technology. And it should not be confused with past meanings of computerized, automated, robotic, or electronic warfare. Cyber warfare requires different principles of warfare which have been derived from thousands of years of experience as documented by Sun Tzu, Clausewitz, Jomini, Liddell-Hart, and others. Some of the kinetic warfare principles apply to cyber warfare while some principles of kinetic warfare have no meaning in cyber warfare. Some principles of kinetic warfare may actually be antagonistic to cyber warfare. The various characteristics and principles of cyber warfare are as under: Waging cyber war is relatively cheap. Unlike traditional weapon technologies, acquiring information weapons does not require vast financial resources or state sponsorship. Boundaries are blurred in cyberspace. Traditional distinctions public versus private interests, warlike versus criminal behavior, geographic boundaries, such as those between nations tend to get lost in the chaotic and rapidly expanding world of cyberspace. Opportunities abound to manipulate perception in cyberspace. Political action groups and other nongovernment organisations can utilize the Internet to galvanize political support. Cyber war has no front line. Current trends suggest that the economy will increasingly rely on complex, interconnected network control systems for such necessities as oil and gas pipelines, electric grids, etc. and these will become vulnerable to cyber attacks. Cyber-warfare must have kinetic world effects. Cyber warfare is meaningless unless it affects someone or something in the non cyber world. Anonymity. Cyber warfare can be waged anonymously. Anonymity is the nature of new technologies, especially telecommunications. An anonymous attack creates two problems. Not only has a states national security been breached, but there is no one to hold accountable for the attack. Offensive Nature. Information technology and computer systems are vulnerable by nature. Therefore, taking defensive measures against the information warfare threat will always be difficult and costly. Improving the defense of information systems also contributes to the security dilemma since decreasing ones susceptibility to information warfare increases the attraction of using information warfare offensively. Cyberwar may have broad ramifications for military organization and doctrine. As noted, the literature on the information revolution calls for organizational innovations so that different parts of an institution function like interconnected networks rather than separate hierarchies. Thus cyberwar may imply some institutional redesign for a military in both intra- and inter-service areas. Moving to networked structures may require some decentralization of command and control, which may well be resisted in light of earlier views that the new technology would provide greater central control of military operations. But decentralization is only part of the picture; the new technology may also provide greater topsight-a central understanding of the big picture that enhances the management of complexity. Many treatments of organizational redesign laud decentralization; yet decentralization alone is not the key issue. The pairing of decentralization with topsight brings the real gains. Cyberwar may also imply developing new doctrines about what kinds of forces are needed, where and how to deploy them, and what and how to strike on the enemys side. How and where to position what kinds of computers and related sensors, networks, databases, etc. may become as important as the question used to be for the deployment of bombers and their support functions. Cyberwar may also have implications for the integration of the political and psychological with the military aspects of warfare. In sum, cyberwar may raise broad issues of military organization and doctrine, as well as strategy, tactics, and weapons design. It may be applicable in low- and high-intensity conflicts, in conventional and non-conventional environments, and for defensive or offensive purposes. As an innovation in warfare, I anticipate that cyberwar may be to the 21st century what blitzkrieg was to the 20th century. At a minimum, it represents an extension of the traditional importance of obtaining information in war-of having superior C3I, and of trying to locate, read, surprise, and deceive the enemy before he does the same to you. That remains important no matter what overall strategy is pursued. In this sense, the concept means that information-related factors are more important than ever due to new technologies Evolution of Cyber Warfare Since the early days of the Internet, there were individuals trying to compromise computer systems security via the network. Initially their activities were limited to defacement of web pages and motivated mostly by mere thrill seeking. In the 1990s political activists realized the potential for publicity coming with the attacks, and defacements carrying a political message became more frequent (Hacktivism). The palette of attack types also widened greatly, most notably some of them became aimed at bringing services or whole systems down, by generating excessive network traffic (denial of service, email bombardments). The first reported politically motivated cyber terrorist attack using a flood of emails was carried out by the Tamil Tigers against Sri Lankan embassies in 1998. It was successful, even as it did not bring targeted servers down, because more importantly it attracted worldwide media attention to the attackers cause. Activist groups involved in other struggles around the world soon followed with similar attempts. The diplomatic conflict between Pakistan and India over Kashmir has, since the late 1990s, been paralleled by a series of mutual cyber attacks. In the Middle East, every time political or military fight escalated between Israel and Palestinians, so did fights on the virtual battlefield. Both sides have used sophisticated techniques and well planned strategies for their cyber attacks. Pro-Palestinian attacks have been carried out by a number of terrorist groups (some of which even came up with the term cyber jihad), and pro-Jewish ones might have been coordinated by the state of Israel, though there is no clear evidence to support that. Studies have shown that Israel leads the list of countries in terms of numbers of conducted computer attacks per 10,000 Internet users. This brings us to the newest trend in cyber warfare: cyber attacks carried out by hacker groups inspired, coordinated, funded and supplied with resources by nation states. They are usually large scale and prolonged operations targeting specific systems within enemy structures. Probably the first of this type of attacks took place during the NATO air strikes against targets in Former Republic of Yugoslavia during the Kosovo violence in 2000. Targeted were all 100 of NATO servers, each subject to excessive network traffic originating mostly from Serbia, as well as Russia and China its supporters in the conflict. The cyber attacks caused serious disruptions in NATOs communication and services, lasting several days, but did not directly affect the bombing campaign. These days cyber warfare still mostly consists of uncoordinated cyber terrorism acts performed by groups whose main aim is publicity and media coverage. Gradually though the nature of cyber warfare is going to change into activities coordinated and paid for by nation states and large international terrorist networks. We can expect attacks trying to exploit vulnerabilities in critical infrastructure like telecommunication systems, airports, power plants, oil and gas infrastructure, supply of water, and military systems. In the coming years we are likely to see a quick rise in the number of cyber battles and one can imagine that in the future wars are going to be fought without dropping bombs and firing missiles. CHAPTER III GLOBAL THREAT IN CYBERSPACE Threats in cyberspace There are four fundamental categories of threats to our information and information infrastructure, characterised by the degree of structure in their attack capability and the measure of trust or access that the threat enjoys. These categories are: Unstructured External Threats. These are individual or small group of attackers who rely heavily on others tools and published vulnerabilities. They attack targets of opportunity and lack persistence against difficult targets. Structured External Threats. These are coordinated attackers i.e. hostile intelligence agencies or organised crime syndicates, which possess a deep technical knowledge of the target, strong motivation, and the capability to mount combination attacks using multiple complex tactics and techniques. Non Malicious Internal Threats. These are accidental breaches of security caused due to ignorance or malfunctioning of system. Malicious Internal Threats. Here the attackers are trusted members of the org or a less trusted support worker with some degree of access. The threats can also be classified under the following heads:
Friday, October 25, 2019
Microscopic Boundary Examination :: essays research papers
MICROSCOPIC EXAMINATION OF METALS In this experiment, our aim is examining the microstructure of metals. By studying microscopic structures of metals, we determine which material fits best to a given application. We used the most common method, optical technique, to examine the microstructure. We used a small specimen cut from the metal to be examined. To be able to see the structure clearly, we first cleaned and polished the specimen. First we start polishing with emery paper no: 1 and some finer grades. One should be careful about the coarse abrasive particles and striations from them. Cleaning and rotating the specimen 90Ã ° during the transfer can prevent these. The next step is polishing, yet washing the sample before polishing gives a more successful result. Finally, we polished the specimen on a rotating cloth covered with an effective abrasive like Al2O3-Water suspension. We kept polishing until we obtained a mirror like face. After we finished polishing, the crystalline structure of the specimen, any cracks, seams, non-metallic inclusions and inhomogenities, could be revealed. Before start etching we first applied mounting process. In this step we used a matched die set. We placed our sample into the die set in the way that the rough face of the specimen was the lower surface and the polished face looked upward. We filled the die cavity with Bakelite and then we transferred our die to a mounpress. Mounting not only protects our sample but also by making its base flat and stable helps us while we are examining the sample under the microscope. In etching process, depending upon chemical composition, energy content and grain orientation, we determine the grain boundaries and the presence of chemically different phases. To reveal these micro structural details of the polished mount we used an etchant like 1% Nital.
Thursday, October 24, 2019
Pros and cons of working as a doctor Essay
Iââ¬â¢d like to tell you about the pros and cons of working as a doctor. There are a lot of interesting trades and all of them are important and useful. After finishing secondary school young people may enter an institute or a university to prepare for different professions. Some of them require high qualification and education, such as doctors, teachers, developers, scientists etc. But there is no doubt that working as a doctor is a demanding job with both advantages and disadvantages. There are several arguments in favour of working as a doctor. To begin with, itââ¬â¢s a rewarding job because doctors help sick or injured people to recover. It is very important and in most countries this work is well-paid. For instance, doctorââ¬â¢s earning ranged from about $156,000 a year for pediatricians to about $315,000 for radiologists and orthopedic surgeons. Furthermore, doctors are rarely out of work because there is always a demand for people to treat the sick or injured. However, there are also a number of disadvantages to being a doctor. Firstly, itââ¬â¢s a tiring job because they work shifts and often work at night. For example, doctors must always be prepared to deal with any number of sick at any time. It is also stressful job because they are in charge of the life of people. In addition, it can be depressing because they often see people suffering. To conclude, I must say that it is not an easy profession and quite a hard job. Unfortunately, in our country this work is badly-paid. But it is impossible to imagine the life of the society without doctors.
Wednesday, October 23, 2019
Digital Fortress Chapter 10
ââ¬Å"Ensei Tankado is dead?â⬠Susan felt a wave of nausea. ââ¬Å"You killed him? I thought you said-ââ¬Å" ââ¬Å"We didn't touch him,â⬠Strathmore assured her. ââ¬Å"He died of a heart attack. COMINT phoned early this morning. Their computer flagged Tankado's name in a Seville police log through Interpol.â⬠ââ¬Å"Heart attack?â⬠Susan looked doubtful. ââ¬Å"He was thirty years old.â⬠ââ¬Å"Thirty-two,â⬠Strathmore corrected. ââ¬Å"He had a congenital heart defect.â⬠ââ¬Å"I'd never heard that.â⬠ââ¬Å"Turned up in his NSA physical. Not something he bragged about.â⬠Susan was having trouble accepting the serendipity of the timing. ââ¬Å"A defective heart could kill him-just like that?â⬠It seemed too convenient. Strathmore shrugged. ââ¬Å"Weak heartâ⬠¦ combine it with the heat of Spain. Throw in the stress of blackmailing the NSAâ⬠¦.â⬠Susan was silent a moment. Even considering the conditions, she felt a pang of loss at the passing of such a brilliant fellow cryptographer. Strathmore's gravelly voice interrupted her thoughts. ââ¬Å"The only silver lining on this whole fiasco is that Tankado was traveling alone. Chances are good his partner doesn't know yet he's dead. The Spanish authorities said they'd contain the information for as long as possible. We only got the call because COMINT was on the ball.â⬠Strathmore eyed Susan closely. ââ¬Å"I've got to find the partner before he finds out Tankado's dead. That's why I called you in. I need your help.â⬠Susan was confused. It seemed to her that Ensei Tankado's timely demise had solved their entire problem. ââ¬Å"Commander,â⬠she argued, ââ¬Å"if the authorities are saying he died of a heart attack, we're off the hook; his partner will know the NSA is not responsible.â⬠ââ¬Å"Not responsible?â⬠Strathmore's eyes widened in disbelief. ââ¬Å"Somebody blackmails the NSA and turns up dead a few days later-and we're not responsible? I'd bet big money Tankado's mystery friend won't see it that way. Whatever happened, we look guilty as hell. It could easily have been poison, a rigged autopsy, any number of things.â⬠Strathmore paused. ââ¬Å"What was your first reaction when I told you Tankado was dead?â⬠She frowned. ââ¬Å"I thought the NSA had killed him.â⬠ââ¬Å"Exactly. If the NSA can put five Rhyolite satellites in geosynchronous orbit over the Mideast, I think it's safe to assume we have the resources to pay off a few Spanish policemen.â⬠The commander had made his point. Susan exhaled. Ensei Tankado is dead. The NSA will be blamed. ââ¬Å"Can we find his partner in time?â⬠ââ¬Å"I think so. We've got a good lead. Tankado made numerous public announcements that he was working with a partner. I think he hoped it would discourage software firms from doing him any harm or trying to steal his key. He threatened that if there was any foul play, his partner would publish the key, and all firms would suddenly find themselves in competition with free software.â⬠ââ¬Å"Clever.â⬠Susan nodded. Strathmore went on. ââ¬Å"A few times, in public, Tankado referred to his partner by name. He called him North Dakota.â⬠ââ¬Å"North Dakota? Obviously an alias of some sort.â⬠ââ¬Å"Yes, but as a precaution I ran an Internet inquiry using North Dakota as a search string. I didn't think I'd find anything, but I turned up an E-mail account.â⬠Strathmore paused. ââ¬Å"Of course I assumed it wasn't the North Dakota we were looking for, but I searched the account just to be sure. Imagine my shock when I found the account was full of E-mail from Ensei Tankado.â⬠Strathmore raised his eyebrows. ââ¬Å"And the messages were full of references to Digital Fortress and Tankado's plans to blackmail the NSA.â⬠Susan gave Strathmore a skeptical look. She was amazed the commander was letting himself be played with so easily. ââ¬Å"Commander,â⬠she argued, ââ¬Å"Tankado knows full well the NSA can snoop E-mail from the Internet; he would never use E-mail to send secret information. It's a trap. Ensei Tankado gave you North Dakota. He knew you'd run a search. Whatever information he's sending, he wanted you to find-it's a false trail.â⬠ââ¬Å"Good instinct,â⬠Strathmore fired back, ââ¬Å"except for a couple of things. I couldn't find anything under North Dakota, so I tweaked the search string. The account I found was under a variation-NDAKOTA.â⬠Susan shook her head. ââ¬Å"Running permutations is standard procedure. Tankado knew you'd try variations until you hit something. NDAKOTA's far too easy an alteration.â⬠ââ¬Å"Perhaps,â⬠Strathmore said, scribbling words on apiece of paper and handing it to Susan. ââ¬Å"But look at this.â⬠Susan read the paper. She suddenly understood the Commander's thinking. On the paper was North Dakota's E-mail address. [email protected] It was the letters ARA in the address that had caught Susan's eye. ARA stood for American Remailers Anonymous, a well-known anonymous server. Anonymous servers were popular among Internet users who wanted to keep their identities secret. For a fee, these companies protected an E-mailer's privacy by acting as a middleman for electronic mail. It was like having a numbered post office box-a user could send and receive mail without ever revealing his true address or name. The company received E-mail addressed to aliases and then forwarded it to the client's real account. The remailing company was bound by contract never to reveal the identity or location of its real users. ââ¬Å"It's not proof,â⬠Strathmore said. ââ¬Å"But it's pretty suspicious.â⬠Susan nodded, suddenly more convinced. ââ¬Å"So you're saying Tankado didn't care if anybody searched for North Dakota because his identity and location are protected by ARA.â⬠ââ¬Å"Exactly.â⬠Susan schemed for a moment. ââ¬Å"ARA services mainly U.S. accounts. You think North Dakota might be over here somewhere?â⬠Strathmore shrugged. ââ¬Å"Could be. With an American partner, Tankado could keep the two pass-keys separated geographically. Might be a smart move.â⬠Susan considered it. She doubted Tankado would have shared his pass-key with anyone except a very close friend, and as she recalled, Ensei Tankado didn't have many friends in the States. ââ¬Å"North Dakota,â⬠she mused, her cryptological mind mulling over the possible meanings of the alias. ââ¬Å"What does his E-mail to Tankado sound like?â⬠ââ¬Å"No idea. COMINT only caught Tankado's outbound. At this point all we have on North Dakota is an anonymous address.â⬠Susan thought a minute. ââ¬Å"Any chance it's a decoy?â⬠Strathmore raised an eyebrow. ââ¬Å"How so?â⬠ââ¬Å"Tankado could be sending bogus E-mail to a dead account in hopes we'd snoop it. We'd think he's protected, and he'd never have to risk sharing his pass-key. He could be working alone.â⬠Strathmore chuckled, impressed. ââ¬Å"Tricky idea, except for one thing. He's not using any of his usual home or business Internet accounts. He's been dropping by Doshisha University and logging on to their mainframe. Apparently he's got an account there that he's managed to keep secret. It's a very well-hidden account, and I found it only by chance.â⬠Strathmore paused. ââ¬Å"Soâ⬠¦ if Tankado wanted us to snoop his mail, why would he use a secret account?â⬠Susan contemplated the question. ââ¬Å"Maybe he used a secret account so you wouldn't suspect a ploy? Maybe Tankado hid the account just deep enough that you'd stumble on to it and think you got lucky. It gives his E-mail credibility.â⬠Strathmore chuckled. ââ¬Å"You should have been a field agent. The idea's a good one. Unfortunately, every letter Tankado sends gets a response. Tankado writes, his partner responds.â⬠Susan frowned. ââ¬Å"Fair enough. So, you're saying North Dakota's for real.â⬠ââ¬Å"Afraid so. And we've got to find him. And quietly. If he catches wind that we're onto him, it's all over.â⬠Susan now knew exactly why Strathmore had called her in. ââ¬Å"Let me guess,â⬠she said. ââ¬Å"You want me to snoop ARA's secure database and find North Dakota's real identity?â⬠Strathmore gave her a tight smile. ââ¬Å"Ms. Fletcher, you read my mind.â⬠When it came to discreet Internet searches, Susan Fletcher was the woman for the job. A year ago, a senior White House official had been receiving E-mail threats from someone with an anonymous E-mail address. The NSA had been asked to locate the individual. Although the NSA had the clout to demand the remailing company reveal the user's identity, it opted for a more subtle method-a ââ¬Å"tracer.â⬠Susan had created, in effect, a directional beacon disguised as a piece of E-mail. She could send it to the user's phony address, and the remailing company, performing the duty for which it had been contracted, would forward it to the user's real address. Once there, the program would record its Internet location and send word back to the NSA. Then the program would disintegrate without a trace. From that day on, as far as the NSA was concerned, anonymous remailers were nothing more than a minor annoyance. ââ¬Å"Can you find him?â⬠Strathmore asked. ââ¬Å"Sure. Why did you wait so long to call me?â⬠ââ¬Å"Actuallyâ⬠-he frowned-ââ¬Å"I hadn't planned on calling you at all. I didn't want anyone else in the loop. I tried to send a copy of your tracer myself, but you wrote the damn thing in one of those new hybrid languages; I couldn't get it to work. It kept returning nonsensical data. I finally had to bite the bullet and bring you in.â⬠Susan chuckled. Strathmore was a brilliant cryptographic programmer, but his repertoire was limited primarily to algorithmic work; the nuts and bolts of less lofty ââ¬Å"secularâ⬠programming often escaped him. What was more, Susan had written her tracer in a new, crossbreed programming language called LIMBO; it was understandable that Strathmore had encountered problems. ââ¬Å"I'll take care of it.â⬠She smiled, turning to leave. ââ¬Å"I'll be at my terminal.â⬠ââ¬Å"Any idea on a time frame?â⬠Susan paused. ââ¬Å"Wellâ⬠¦ it depends on how efficiently ARA forwards their mail. If he's here in the States and uses something like AOL or CompuServe, I'll snoop his credit card and get a billing address within the hour. If he's with a university or corporation, it'll take a little longer.â⬠She smiled uneasily. ââ¬Å"After that, the rest is up to you.â⬠Susan knew that ââ¬Å"the restâ⬠would be an NSA strike team, cutting power to the guy's house and crashing through his windows with stun guns. The team would probably think it was on a drug bust. Strathmore would undoubtedly stride through the rubble himself and locate the sixty-four-character pass-key. Then he would destroy it. Digital Fortress would languish forever on the Internet, locked for all eternity. ââ¬Å"Send the tracer carefully,â⬠Strathmore urged. ââ¬Å"If North Dakota sees we're onto him, he'll panic, and I'll never get a team there before he disappears with the key.â⬠ââ¬Å"Hit and run,â⬠she assured. ââ¬Å"The moment this thing finds his account, it'll dissolve. He'll never know we were there.â⬠The commander nodded tiredly. ââ¬Å"Thanks.â⬠Susan gave him a soft smile. She was always amazed how even in the face of disaster Strathmore could muster a quiet calm. She was convinced it was this ability that had defined his career and lifted him to the upper echelons of power. As Susan headed for the door, she took a long look down at TRANSLTR. The existence of an unbreakable algorithm was a concept she was still struggling to grasp. She prayed they'd find North Dakota in time. ââ¬Å"Make it quick,â⬠Strathmore called, ââ¬Å"and you'll be in the Smoky Mountains by nightfall.â⬠Susan froze in her tracks. She knew she had never mentioned her trip to Strathmore. She wheeled. Is the NSA tapping my phone? Strathmore smiled guiltily. ââ¬Å"David told me about your trip this morning. He said you'd be pretty ticked about postponing it.â⬠Susan was lost. ââ¬Å"You talked to David this morning?â⬠ââ¬Å"Of course.â⬠Strathmore seemed puzzled by Susan's reaction. ââ¬Å"I had to brief him.â⬠ââ¬Å"Brief him?â⬠she demanded. ââ¬Å"For what?â⬠ââ¬Å"For his trip. I sent David to Spain.ââ¬
Tuesday, October 22, 2019
T he notion of stakeholder is one of the most prom Essays - Economy
T he notion of stakeholder is one of the most prom Essays - Economy T he notion of stakeholder is one of the most prominent contributions to recent business ethics. This theory expressed that managers, in making decisions, ought to consider the interests of all stakeholders This theory is one of the major influences on CSR. CSR is a concept whereby companies integrate social and environmental concerns in their business operations and in their interaction with their stakeholders on a voluntary basis." More locally the definition is concerned with the relationship between a corporation and the local society in which it resides or operates. The central tenet of social responsibility however is the social contract between all the stakeholders to society, which is an essential requirement of civil society. This concept therefore implies a recognition that the organisation is part of a wider societal network and has responsibilities to all of that network rather than just to the owners of the organisation Since the introduction of this concept by Edward Freeman in 1984, a concern for the interests of all stakeholder groups has become a widely recognized feature of ethical management and it has been employed in order to give an explanation to the general idea, supported by economists, according to which the main responsibility of businessmen was tied to profit maximization S takeholders could be defined as any group or individual who can affect or is affected by the achievement of a corporation purpose, but also as people holding specific r ights I n order to determine how a firm should behave in specific situations, it is necessary to identify the parts that interact with the firm . Normally, the stakeholder group includes workers, managers, shareholders, consumers, customers and the local community. For instance, a firm has some duties towards its workers as they are both workers and human beings. Workers, on the contrary, have some obligations that derive from the role they play within the firm, in addition to the general moral obligations that bind the relations between individuals and between workers and firms . The stakeholder theory develops a thick grid of relations based on trust that binds the firm towards its stakeholders and both inside and outside the firm. As a simple example, when a factory produces industrial waste, a CSR perspective attaches a responsibility directly to factory owners to dispose of the waste safely. By contrast, a stakeholder theorist begins with those living in the surrounding community who may find their environment poisoned, and begins to talk about business ethics by insisting that they have a right to clean air and water. Therefore, they're stakeholders in the company and their voices must contribute to corporate decisions. It's true that they may own no stock, but they have a moral claim to participate in the decision-making process. This is a very important point. At least in theoretical form, those affected by a company's actions actually become something like shareholders and owners. Because they're touched by a company's actions, they have a right to participate in managing it. T he theory demands that all those who may be affected know what's being dumped, what the risks are to people and the environment, and what the costs are of taking the steps necessary to dispose of the chemical runoff more permanently and safely. stakeholder theory obligates corporate directors to appeal to all sides and balance everyone's interests and welfare in the name of maximizing benefits across the spectrum of those whose lives are touched by the business. The stakeholders' theor y is based on the idea that the firm gives some value to stakeholders, just like each group of stakeholders attributes value to the firm, and this mechanism of mutual exchange enables the firm to grow in a safe way
Monday, October 21, 2019
Tyler LeBlanc LeBlanc 1. Essays - Holocaust Literature, Night
Tyler LeBlanc LeBlanc 1. Essays - Holocaust Literature, Night Tyler LeBlanc LeBlanc 1. Prof. Horowitz Enl 110 10/2/2017 Practice #2 Narrative Who Am I ? Story Losing It All I look around the crowded hallways, poste rs and decorated banners cover the never ending line of lockers. Mature teens stand near the metal walling repping institutions that they would attend shortly after our graduation. I stand out amongst the crowd wearing my same bland clothing, as up to that point no college representative made any effort in reaching out to me, let alone were they throwing their institutions apparel my way. I keep my mind optimistic, as I uploaded my football film up to the internet last night. My remarkable film seems to be my last hope of furthering my football career and education . Two weeks have passed from the time I sent out my football film, and last night my opportunity has finally knocked on my door. I received a email from two schools pertaining their hopes of me attending their institution. The two schools that happened to notice me were opposite in proximity to my residence, so in essence the closest school would be the most appealing to me.The two colleges are Iowa western, and Bryant University. Bryant Univer sity only being a forty five minute drive into R hode Island without surprise would be my priority of the two schools. My nerves run ramped as my efforts in expressing my interest to Bryant have landed me LeBlanc 2. a meeting with their offense of coordinator within the next five minutes. I walk down the hallway after getting the announcement over the loud enercomm to go down to the front office to meet with my visitor and my senior advisor. As my clammy hand swing open the aged door, a plump giant stranger lunges at me for embrace. The large man introduces himself as Bryant university's offensive coordinator. The over excellous man and I take a seat. Before the older gentleman discussed anything, he mentioned I must cut fifty pounds to gain a roster spot. Me being a large egoed teenegaer I informed the coach that I realistically did not see that happening. As soon as the words uttered from my mouth the man without response spontaneously changed his demeanor and swiftly and abruptly walked out of the advisor's office. I sit in the wooden chair in disbelief, trying to comprehend the event that just took place so quickly. Within the manifestation of plan B the overjoyed flight attendant announced flight 365's final decent into Omaha's Eppley Airfield. From what I seen on the car ride from the airport to campus in the musty taxi Iowa turns out to be exactly what I knew it would be, nothing but corn. I arrive at the tiny campus and the driver points out the chalky brick building that would be my home for the next couple o f months. After my solo effort of dragging my overly packed suitcase into my barren room I plopped onto my new used barre mattress. After resting my eyes for several hours I look around the room and find no trace of my unknown roommate. This discovery woul d be a pleasant one for most, however in my case I was banking on asking my roommate's parents for a ride to the closest store for mere necessities. I lay on the cold plastic fabric bed shuddering from the cold air shooting from the machine placed right a bove my head. I grow more and more upset at myself as time passes by. I try to swallow my pride, ho wever the LeBlanc 3. sharp thought from my self conscious that "I could be in a D1 program in a warm catered dorm room" cut so deep. A great conclusion that my life up to this point was a series of disappointment lead me swearing to myself that from this moment on I will make best of every moment of my life so I would never hit bottom like this once more. My mind schemed on exactly what must improve and how I would imple ment those ideals into my everyday life. I will not let my short comings define me. I kept optimism
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