Multiprogramming And Time Sharing

Multiprogramming And Time Sharing In a multiprogramming and time sharing environment, several users share the system simultaneously. This situation can result in various security problems. What are two such problems? Ans1. (a) In Multiprogramming and time sharing environment multiple users share the data and system so these are following two problems which might occur There can be the case of pilfering of data, which can result in various problems. It means after gaining illegal access in somebody system and thieving the data is a problem One more problem can be, no proper accounting of resources, it means if somebody is using the resource without maintaining proper accounting data, is a serious problem. Can we ensure the same degree of security in a time shared machine as in a dedicated machine? Explain your answer. Ans1. (b) We cannot assure same level of security as it is presented in dedicated machine. Because in time sharing environment, multiple users are accessing the system, so it is somewhat difficult to implement because if we are planning to use a high-level encryption for the sharing environment, than it will be difficult to implement that security. Each and every security system made by human can be broken by another human. Under what circumstances would a user be better off using a time sharing system rather than a PC or single user workstation? Ans2. There are two types of basic working environments Time sharing environment Dedicated resource environment In time sharing environment, multiple users are sharing the system and resources and this type of environment is useful when the tasks which are to performed are big or large and hardware resources are fast efficient. The full power of the resources can be consumed for the user problems. Dedicated environment is useful when the tasks which are to be performed are small level. This environment is preferred when hardware resources are sufficient to handle the users problem. In the designing of the operating system there are two approaches modular kernel and layered approach? How are they different? Ans3. Both modular kernel and layered approach are the approaches of the designing of the architecture of operating system. Layered Approach: Layered approach follows the concept of design in the form of different layers. In this the operating system is divided into layers in which core layer is hardware resources and the topmost layer is User-Interface. The layers which are in-between interact with the layer below it and finish the tasks. In this all the subsystems are to be executed in strict order. Modular Kernel Approach: This approach divides the operating system designing into modules of various levels. Like for e.g. in modules various different fields like booting, process, jobs, etc are divided and they run their modules in random manner. In a single module a group of various tasks are specified. Difference between both these designs is that layered approach imposes strict ordering of other layers; lower layers are not allowed to invoke operations corresponding to upper layer operations, whereas in the case of modular approach various modules can invoke each other without any constraint. Part B There is guest operating system and a host operating system like VMware? List all the factors in choosing the host operating system? Ans4. The factors which affect the selection of host operating system are: The host operating system should be of upgraded version which you are using as using as guest operating system. Hardware resources get shared in case of guest operating system, so care must be taken off. Because if the resources scarcity occurs both the OS will hang. Operating system used must be stable. It more depends upon security and speed. The kernel is responsible for a action with the processes. Search through the action of kernel and describe what the action is? Ans5. Kernel is known as the heart of the Operating System. Kernel is the main task handler of the OS. It represents as a bridge between applications and the data processing which is performed at hardware level. The actions of Kernel are : Kernel sets up an address space for the program, loads the files containing the programs code into memory and executes it. Multi-tasking kernels are able to give the user the virtual view that the number of processes running simultaneously is higher than the maximum number of processes the computer is actually running. Kernel uses scheduling algorithms to determine which process is running next and how much time it will be given. The algorithm chosen may allow for some processes to have higher priority than others. The kernel generally also provides these processes a way to communicate; this is known as inter-process communication. Kernel is responsible for communicating the hardware resources with the software components. Co-operative multitasking, where each process is allowed to run uninterrupted until it makes a special request that tells the kernel it may switch to another process. Such requests are known as yielding. Q6. Considering both the system level and the programmer level. Consider the advantage and disadvantage of the following structure. Synchronous and asynchronous communication. Ans (a) Synchronous communication is direct communication. In which the communication is time synchronized. It means all the users are involved in the communication are present at the same time. Asynchronous communication does not require that all the users involved in the communication should be present at the same time. For e.g. e-mails, blogging. Asynchronous is useful when the communication is done at far scale means online. Automatic and explicit buffering. Ans (b) Automatic buffering provides a queue which of infinite length, which will never block the user while waiting to perform a task. Disadvantage: In this large amount of memory space is wasted while allocation. Explicit Buffering asks explicitly that how much memory must be allocated as the available queue. In this user can be blocked while it is performing some task Advantage: Less Memory space will be wasted with explicit buffering. Send by copy and send by reference Ans (c) Send by copy, in this type of method original value of the variable is never changed throughout the program or task. Whereas in the case of send by reference, address of the original variable is passed and any changes made in the reference value will be reflected in the original value. Fixed-sized and variable-sized messages. Ans (e) This concept is used at the time of allocation of space of the buffers. In fixed-sized, fix amount of memory is allocated to buffer which will create a problem at the time of memory allocation and forms a memory blockage. Because it can hold limited number of tasks/messages only. Whereas in variable sized the buffer memory can be reallocated and resized at any place. In this the buffer-size is not pre-known.

A Tale of Two Cities - Quotes Analysis Essay -- essays research papers

1.â€Å"It was the best of times†¦Ã¢â‚¬  Charles Darnay and Lucie Manette, in the wake of the French Revolution, blithely married in England. (Book II, Chapter 18) Their marriage forged the loving ties between the two, and brought children to their household. To them, to be able to live with their loved one and to be able to caress their children was the best. They were oblivious of the rousing wraths of the peasants in France, and the time to them could not have been better. 2.â€Å"It was the worst of times†¦Ã¢â‚¬  In Book II, Chapter 21, the Defarges and their supporters angrily stormed the Bastille and ruthlessly decapitated the governor of the prison. Although the breaching of the Bastille was not unwarranted, the inexorable murder of a man trying to do his duty reflected the merciless spirits of the rebels, mad and seething with rage like a bull. The act might have seemed inconsequential then, but soon it would rouse the bloody Revolution where even the suspected man would be killed. Indeed, the storming, and the murder of the governor, marked the beginning of â€Å"the worst of times,† when order was replaced with chaos, when peace was replaced with violence. 3.â€Å"It was the age of wisdom†¦Ã¢â‚¬  At Charles Darnay’s first trial in France on charges of being an emigrant, Dr. Manette cleverly used his camaraderie with the mad mobs to liberate Charles. (Book III, Chapter 6) Manette had been a wronged prisoner in the Bastille charged by Evremonde, and, using his eminence and his relationship with Darnay, he was able to manipulate the jury. The wisdom of Manette saved his son-in-law. 4.â€Å"It was the age of foolishness†¦Ã¢â‚¬  As the Revolution progresses, more people are executed per day, (â€Å"Fifty-two†, in Book III, Chapter 13) and the bloodthirstiness of t... ...uries befitting the state of a marquis in a luxurious age and country†¦ was conspicuous in their rich furniture†¦ diversified by many objects that were illustrations of old pages in the history of France.† (Book II, Chapter 9) The Marquis’s house was large, extravagant, and decorated – he had everything. 10.â€Å"We had nothing before us†¦Ã¢â‚¬  In Book I, Chapter 5, a cask of wine was spilt on the ground, and the people â€Å"suspended their business, or their idleness, to run to the spot and drink the wine.† The ravenous drinking of the people reflects their hungry stomachs, their emptiness – â€Å"devoted themselves to the sodden and lee-dyed pieces of the cask, licking, and even champing the moister wine-rotted fragments with eager relish.† Even a drop of wine was worth the effort. The nothingness that existed for most of the commoners would help incite the French Revolution.

How Surface Area to Volume Ratio Affects the Rate of Heat Loss :: Depression and Suicide

How Surface Area to Volume Ratio Affects the Rate of Heat Loss Aim The aim of this investigation is to answer the following questions: Why do elephants have trouble cooling down? And why do mice have trouble keeping warm. Apparatus 5x cans (5 different sizes) 1x Bunsen burner 1x heatproof mat 1x Thermometer 1x Ruler 1x Kettle 1x Stopwatch 1x Tripod 1x Gauze 1x Clamp and stand Plan ==== * Label each can from A to E in ascending order, A the biggest and E the smallest. A representing the mouse and E representing the elephant. * Measure and record the height and diameter of each can. * Fill can A to the top with boiling water out of the kettle. * Bring the water back up to a temperature of 100 degrees Celsius, to make sure it is a fair test and that all the cans start from 100 degrees Celsius. * Use a clamp and stand to hold the thermometer inside the can, position it so that the bulb of the thermometer is in the centre of the can. * With a stopwatch ready to start timing, switch off the gas to turn off the Bunsen burner and start timing. * Read and record the temperature on the thermometer every two minutes for twenty minutes. * Repeat this for all of the other cans, twice for each one and make a recording of all the temperatures, and work out the averages. Safety ====== * Always wear safety glasses during the practical to protect the eyes and avoid any hot water being splashed into them.

One Fat Summer - Analysis Of Important Theme Essay -- essays research

One Fat Summer by Robert Lipsyte, is a very good book for teenagers that feel insecure about themselves and have low self-esteem. In the book they will read about a young boy name, Bobby who overcomes his fears of being fat and being bullied by Willie, one that is much stronger then him physically, but not emotionally. The basic theme of this story is to stand up for yourself no matter the situation. Willie, the antagonist of the story accidentally makes Bobby overcome his fears and stand up to him. In a way Willie could be a protagonist because he helps Bobby overcome his fears. Willie is a crazy person that doesn't know what he is doing. It all started in the summer when Bobby, an overweight fifteen year old is embarrassed to take his clothes off and swim in the beach because he is embarrassed that people would make fun of his wobbly legs and stomach, yet that isn't the his worst fear. He had taken swimming lessons the last summer, but quit because he started to gain a lot of weight. He tries to ignore the nasty remarks people say about him, but they stay in his mind. He can sort of ignore it because his best friend, Joanie has the ugliest nose on the face of the earth, but she doesn't care a bit about what other people think, which makes her Bobby's mentor, kind of. Bobby finds himself a hard low paying job. It doesn't matter to him how much it pays, but he wants to feel secure about himself that he can do something in his life except eat. The job is to mow a lawn f...

War Horse Movie Review

Macaulay I had the honor of watching War Horse' in my history class, this movie came out in December of 2011 This amazing film was directed by Steven Spielberg, the top three actors were Jeremy Irvine, Tom Hedonistic, and Benedict Cumberland.Darkroom,1 914: Even against if wife's Narrator who Is farmer, buys a thoroughbred horse rather than a work horse, when his teenaged son Albert trains the horse and calls him Joey, You couldn't break them apart, when his crops falls, the farmer sell Joey for the way and he Is shipped to France where, after escapes he Is featured by the Germans and changed hands twice before he Is found.When He runs he gets caught In the barbed wire In No Man's Land a few years later and Is freed, He gets brought back behind British lines where Albert, WHO has enlisted In the war and Is now a private, has been temporarily blinded by gas, but still somehow recognized Joey. However, as the war has ended they declared Joey Is set to be auctioned off, after he is soug ht be auctioned off, The Grandfather of a little girl who had Joey in the beginning of the movie buys Joey, But when he realized That Joey truly longs to Albert, he kindly returns Joey to him stating that â€Å"It is of course what my Granddaughter would've wanted, she IS the boss. I would highly Horse is not for everyone. I would recommend it to those who can take hard truth, and are interested by wars. Even though this book is an historical fiction, it is filled with facts. I wouldn't recommend this book to those who are easily upset and emotional. It shows some of most amazing stories of the life and death of the million horses who served in the Army between 1914- 1918. Over a million died, with fewer than 100,000 returning home.

An Analysis on Alfred Hitchcock and His Film Psycho Essay

In the exhibitor outlook in Alfred Hitchcocks movie, the amount of product line that flowed peck be considered in modern-day cartridge holders as nothing terse of artistry or a nose out of tastefulness in the viewers understanding(a). However, during the 1960s, the shower outlook is considered unreasoncapable or gratuitous, bountiful the context the impression that it depicts too more unsolicited violence.For those who look upon the shower medical prognosis as mavin of Hitchcocks taste of revolutionizing pick outs, the scene throw out be tempered as sensation that reflects the perception of the time in which the make was conceived. Apparently, the shower scene amongst the form of hair-raising scenes in the assume further reflects the 1960s social ferment that grew in the west, including the United States. An other(a)(a) blood-red scene in the movie is the whiz that showed Detective Milton Arbogast being slashed to a bloody death afterward he was pushed off f rom the height of the stairs.The murder of the confidential detective in the movie Psycho, as well as the shower scene, can be taken to flirt with as two of the social upheavals that shatter in the 1960s American society, revolutionizing the look of life in which movie scenes are crafted particularly the way in which they portray violence, sexuality, and language. Hitchcock for the most part worked and directed movies that fall under the thriller literary literary genre by imprinting upon formulaic movies his illustrious idiosyncratic touches. The elbow room in which Hitchcock worked as a important part of the foolmaking serve well largely haved in propelling him to the precondition of an auteur.Hitchcock even ordered and manipulated the shade of fairish he was looking for in leniency Kellys hair in one of the look ats (Martin & Wikstrom, 2001, p. 20). What enab take Hitchcock to cut in the camera is his place of works out the gunpoints of the film in advance, w hich eventually corresponds to the unswervingly underslung ratio of film really utilized in the finishing cut to the film shot during the entire shoot. Having worked out everything in advance, he worked quickly and economically. A token(prenominal) set of editing was the result of his working attitude, hence the term cutting in the camera. The item that Hitchcock planned every detail in advance oftentimes led to bore him during the actual shooting of the film. To remain firm off languor in the course of the actual filming progression, he would customarily commence labor on the storyboards for his plan of attack film project (Martin & Wikstrom, 2001, p. 21). When all the arouse film-makersthose who were referred to as auteurs by the Cahiers du Cinema in 1955, before the term was distorted concealed themselves behind various characters in their movies.Alfred Hitchcock achieved a real tour de force that naturalized his stance further as an auteur (Ray, 2001, p. 38). Hitchcock s most popular films include Vertigo, Psycho, kick upstairs Window, and The Birds which reflected his story telling methods and dexteritys which were renowned for their witty plots, intelligent dialogues and the fusion of mystery and murder. With this respect, Hitchcocks name became commonly attributed to the thriller genre as he created revolutions in that aspect of filmmaking. initiate of the reason to this, apart from the detail that it was the genre he centrally focused on, is his skill which he exhibits during the course of the film which can be observed in his manipulation of the subject in line with the shots he utilizes and on how he is able to integrate them completely (Truffaut & Scott, 2003, p. 346). One illustration to this is shown in one of his famed screen moments. The marvellous shower scene in the film Psycho featured 70 eccentric shots in just a involvement of 1 minute.The numbers of shots were combined altogether in such a manner that one will find a diff icult time seeking the singularity between the montage and the mise-en-scene (Nickens, 1995, p. 110). A long number of movies made by Hitchcock contained flutter cameo appearances by the managing handler himself such as a Hitchcock being seen for a picture period boarding a bus, standing in an apartment across the aloofness of a courtyard, appearing in photographs in the scenes, or by simply miscegenation in front of an edifice.This seemingly mischievous act eventually became labeled as one of the Hitchcock signatures in films. Further, Hitchcock himself would carry a musical instrument in one of the scenes in the film as a recurring theme (Martin & Wikstrom, 2001, p. 23). The fact that these alter elements are included in the movies of Hitchcock signifies the fact that Hitchcock had a very huge spot in the filmmaking process and that this monumental office staff extends his ad hominemity right into the theme of the movie.Since film producers have a significant commit on Hitchcock, he was able to freely include these elements either in a subtle or in an straightforward manner. The constant inclusion of these personal elements in the many movies of Hitchcock eventually molded an propose uniquely his own. Hence, it became inevitable that the movies highlighting these elements were direct attributed to Hitchcock thereby creating the director-image of Hitchcock as an auteur (Sarris, 2002, p. 29).Considering all of the characteristics of Hitchcock, his crucial fictitious character in the movies he created, the inclusion of the elements in the movies which reflect his personality and life ardour as well as the role of the scholars in carefully assessing his impact of his personal touches in the movies, it can be say that Hitchcock indeed is an auteur in the strictest sense of the word. Although arguments can be raised against the role of the director as an auteur in the filming of the movies, it remain a fact that Hitchcock had an immense char ge of participation prior to, during , and even after the filmmaking process.Part of the arguments against it is the claim that several other factors must also be considered and the sexual morality should not solely belong to the director. As with the case of the seemingly lesser roles in the movies, the collective efforts of all the participants excluding the participation of the director when combined altogether essentially posits a substantial bearing in the debut of the film. In conclusion, the factors which are attributed to the delegation of the status of an auteur to Hitchcock should not be looked upon as a means to ignore the relative immensity of the role of the rest of the crew pertain in film production.Rather, the role of Hitchcock as an auteur should be noted as a form of a proper liberty in guiding the direction of the film. On the other hand, the distinction between an auteur and the other roles in the film production should be taken as an informal kin which def ines the structure of the outcome of the movie. This is the point where Hitchcock himself leads the way not only as a director but also as the auteur. Not surprisingly, Alfred Hitchcock techniques are indeed innovative during his life where a considerable number of his films manifested his ingenuity in the film industry. specially in his film Psycho, Hitchcocks style in directing the film is manifested with his fitting use of musical stacks and backgrounds in the proper timing and scene. His onslaught in Psycho manifest the fact that Hitchcock is only one of the few who was able to reshape the film industry and contribute significantly to its quality and style.ReferencesMartin, G. , & Wikstrom, P. (2001). Alfred Hitchcock and the Golden years of Radio. In The Alfred Hitchcock Presents Companion (1st ed. , pp. 20-23) O T R Pub. Nickens, C. (1995).Psycho Behind the Scenes of the Classic Thriller (1st ed. ) Harmony. Ray, R. B. (2001). The Bordwell regime and the Stakes of Knowled ge. In How a icon speculation Got Lost and Other Mysteries in Cultural Studies (pp. 38-39). Indiana Indiana University Press. Sarris, A. (2002). The Auteur Theory Revisited. In V. W. Wexman (Ed. ), Film and Authorship (pp. 27-29). untried Jersey Rutgers University Press. Truffaut, F. , & Scott, H. Hitchcocks Final Years. In 2003 (Ed. ), The Definitive Study of Alfred Hitchcock (Revised ed. , pp. 346). New York Gallimard.

Liberal Theory Essay

This memo outlines the big progress to theorizing multinational relations. Like realism, institutionalism, or non-rational come outes, it is a name attached to a family of related theories of foreign relations. Here it go away not be use of goods and servicesd, as m or so(prenominal) use it in supranational relations, to deputise theories that stress the greatness of internationalist institutions. Nor to designate theories that stress the vastness of universal, altruistic or utopian values of a wide sort, such(prenominal) as human rights or democracy.Nor to designate theories favored by left-wing ( good- find outing) g everyplacenmental parties or policies in the US. Instead, it is a hypothesis that stresses the habit of the varied companionable interests and values of introduces, and their relevance for earthly concern governmental science. self-aggrandizings argue that the universal curb of world politics is globalization. renders be, and always have been , embedded in a national helpated and transnational society, which induces fillips for economic, kindly and cultural interaction across borders. State indemnity whitethorn ease or block such interactions.Some interior(prenominal) groups whitethorn benefit from or be harmed by such policies, and they pressure government accordingly for policies that ease realization of their goals. These favorable pressures, transmitted through interior(prenominal) political institutions, correct asseverate taste sensations that is, the set of real complaisant purposes that motivate foreign insurance constitution. State orientation courses circulate governments an underlie stake in the international issues they face. Since the home(prenominal) and transnational neighborly context in which recounts ar embedded varies greatly across space and time, so do realm preferences.Without such social concerns that slide by express borders, e enunciates would have no rational i ncentive to engage in world politics at tout ensemble, but would simply devote their resources to an autarkic and single out existence. To motivate conflict, cooperation, or e very former(a) dear(p) foreign policy action, evokes must possess sufficiently penetrative farming preferences. The resulting globalization-induced innovation in social demands, and and so show preferences, is a cardinal manage of stir deportment in world politics. This is the exchange insight of boastful international relations theory.It corporation be expressed colloquially in several(a) ways What librates more or slight is what states want, not how they get it. or- Ends argon more important than agent. Liberal theory is characteristic in the temper of the variables it privileges. The all-inclusive focus on fun in socially-determined state preferences distinguishes big(a) theory from early(a)wise theoretical traditions realism (focusing on variation in controlling indicant re sources), institutionalism (focusing on education), and or so non-rational approaches (focusing on patterns of beliefs about appropriate means-ends relationships).In explaining patterns of fight, for illustration, liberals do not look to inter-state imbalances of military unit, bargaining failure receivable to private information or un accreditedty, or picky non-rational beliefs or propensities of individual leaders, societies, or organizations. Liberals look preferably to conflicting state preferences derived from hostile nationalist or political ideologies, take exceptions over appropriable economic resources, or exploitation of un pretended political constituencies.For liberals, a necessary condition for war is that social pressures lead unmatched or more aggressor states to possess revisionist preferences so natural or risk-acceptant that other states argon unwilling to submit. triple detail variants of liberal theory ar be by particular types of preferences, thei r variation, and their impact on state behavior. Ideational liberal theories link state behavior to varied designings of desirable forms of cultural, political, socioeconomic order. Commercial liberal theories stress economic mutualness, including many variants of endogenous policy theory.Republi stand liberal theories stress the component part of domestic good example institutions, elites and leadership dynamics, and executive-legislative relations. Such theories were first conceived by prescient liberals such as Immanuel Kant, Adam Smith, thaumaturgy Stuart Mill, John Hobson, Woodrow Wilson, and John Maynard Keynes-writing well before the complicated causes ( autarkic variables) they stress (e. g. democratization, industrialization, nationalism, and welf be provision) were widespread. This essay introduces the liberal approach in three steps. It presents 2 distinctive assurances central and distinguishing liberal theories.Then it further explicates the three variants of li beral theory that follow from these assumptions. Finally, it reviews well-nigh distinctive strengths that liberal theories tend to sh be vis-a-vis other types of international relations theory. Two Unique Assumptions central Liberal Theory What basic assumptions underlie the liberal approach? Two assumptions liberal theory receive argon the assumptions of anarchy and rationalness. Specifically, states (or other political actors) exist in an anarchic environment and they generally act in a broadly rational way in making decisions. 2The anarchy assumption means that political actors exist in the distinctive environment of international politics, without a world government or any other authority with a monopoly on the let use of force. They must engage in self-help. The rationality assumption means that state leaders and their domestic supporters engage in foreign policy for the instrumental purpose of securing benefits provided by (or avoiding cost imposed by) actors removed of their borders, and in making such calculations, states traink to deploy the most cost-effective means to carry out any(prenominal) their ends (preferences) may be.Liberal theory shargons the first (anarchy) assumption with almost all international relations theories, and it shares the bite (rationality) assumption with realism and institutionalism, but not non- rationalist abut theories. Liberal theories are distinguished from other rationalist theories, such as realism and institutionalism, by two unique assumptions about world politics (1) States represent social groups, whose views be state preferences and (2) Interdependence among state preferences influences state policy. Let us escort all(prenominal) in turn.Assumption One States Represent societal Preferences The first assumption divided up by liberal theories is that states represent some subset of domestic society, whose views constitute state preferences. For liberals, the state is a representative institution ce aselessly subject to capture and recapture, construction and reconstruction, by domestic social coalitions. These social coalitions define state preferences in world politics at any microscope stage in time the tastes, ends, basic interests, or fundamental social purposes that underlie foreign policy. politicianitical institutions constitute a critical transmission belt by which these interests of individuals and groups in civil society enter the political realm. All individuals and groups do not wield personify influence over state policy. To the contrary, their power varies widely, depending on the context. Variation in the accurate nature of representative institutions and practices helps define which groups influence the national interest. Some states may represent, ideal-typically, the preferences of a single tyrannical individual, a Pol Pot or Josef Stalin others afford opportunities for broad elective participation.Most lie in between. The precise preferences of social gr oups, weighted by their domestic power, shape the underlying goals (state preferences) that states pursue in world politics. Sometimes, non-governmental organizations (NGOs) and other actors may form transnational alliances to assist social forces. State-society relationsthe relationship between a state and its domestic (and transnational) society in which it is embeddedlies at the center of liberal theory. 3Liberals believe that state preferences cannot be reduced to some simple metric or preference ordering, such as seeking security department or wealth. Most modern states are not Spartan They compromise security or sovereignty in order to achieve other ends, or, indeed, just to save money. Nor do modern states uniformly seek wealth. Instead they come sooner strike complex and varied swap-offs among economic, social and political goals. Nor, in conclusion do they seek power in the mother wit of domination Many countries would clearly rather dribble money on butter rather th an guns. To see how consequential the variation in goals can be, one contend look no further than the implications for international relations of Germanys evolution from Adolf Hitlers preference for militant nationalism, fascist rule, autarky, and ruthless exploitation of German Lebensraum under Das Dritte Reich to the social compromise underlying the postwar Bundesrepublik Deutschland, which favored capitalist democracy, expanding German exports, and sedate reunification.Similarly one can look at the striking change in policy between Maoist and post-Maoist China, Soviet and post-Soviet Russia, Imperial and post-Imperial Japan, and so on. Assumption Two Interdependence among State Preferences Influences State Behavior The second core assumption shared by liberal theories is that the interdependence among of state preferences influences state behavior. Rather than treating preferences as a fixed constant, as do realists or institutionalists, liberals seek to explain variation in pr eferences and its significance for world politics.The precise scattering and nature of the stakes explains disaccordences in state policy and behavior. States, liberals argue, orient their behavior to the precise nature of these underlying preferences compatible or conflictual, aggravated or weak, and their precise scope. States require a social purpose a perceived underlying stake in the matter at hand in order to profits any attention to international affairs, let merely to provoke conflict, inaugurate cooperation, or take any other significant foreign policy action.If there is no such interdependence among state objectives, a rational state will conduct no international relations, satisfying itself with an isolated and autarkic existence. Conflictual goals plus the incentive for of political disputes. Convergence of underlying preferences creates the preconditions for peaceful coexistence or cooperation. The critical theoretical link between state preferences, on the one hand, and state behavior, on the other, is the concept of policy interdependence.Policy interdependence refers to the dispersion and interaction of preferencesthat is, the extent to which the pursuit of state preferences ineluctably imposes costs and benefits (known as policy externalities) upon other states, independent of the transaction costs imposed by the specific strategic means chosen to obtain them. Depending on the underlying pattern of interdependence, each(prenominal) of the qualitative categories above, the form, substance, and understanding of conflict and cooperation vary according to the precise nature and intensity of preferences.The existence of some measure of diverging fundamental beliefs, scarcity of material goods, and inequalities in domestic political power among states and social actors renders inevitable some measure of pluralism and competition among and indoors states. Unlike realists such as Waltz and Morgenthau, liberals do not get in these diverg ent interests are uniformly zero-sum. At the equivalent time, liberals reject the utopian notion (often attributed to them by realists) of an reflexive harmony of interest among individuals and groups in international society.Nor do liberals argue, as realists like Morgenthau charge, believe that each state pursues an ideal goal, oblivious of what other states do. Liberals argue alternatively that each state seeks to realize distinct preferences or interests under constraints imposed by the different interests of other states. 4 This distribution of preferences varies considerably. For liberals, this variationnot realisms distribution of capabilities or institutionalisms distribution of informationis of decisive causal importance in explaining state behavior.A few examples illustrate how liberal theories differ from realist, institutionalist or non-rational ones. We have already encountered the example of war in the introduction, in which liberals stress states with aggressive pre ferences, rather than imbalances of power, incomplete information, or non-rational beliefs and processes. Another illustration is deal out policy. Economists widely agree that dislodge take is captain eudaimonia-improving policy choice for states, yet trade protective covering is often practiced. To explain protectionism, liberals look to domestic social preferences.An important factor in almost all countries is the competitive position of affected economic sectors in global markets, which generates domestic and transnational distributional effects Protectionism is generally backed by producers who are globally uncompetitive free trade by producers who are globally competitive. Moreover, even if the state is a interlocking beneficiary from free trade, domestic adjustment costs may be too high to assume politically, or may endanger other countervailing domestic social objectives, such as domestic social equality or environmental quality.Certain domestic political institutions , such as non-parliamentary legislative systems, which governed US trade policy before 1934, grant disproportionate power to protectionist interests. This differs from realist explanations of trade protectionism, which tend to stress the role of hegemonic power in structuring trade liberalization, or the need to defend self-sufficient national security within the prevailing zero-sum geopolitical competition, perhaps by maintaining self-sufficiency or by aiding allies at the disbursement of purely economic objectives.Institutionalists skill cite the absence seizure of appropriate international institutions, or other means to manage the complex informational tasks and collective action problemsnegotiation, dispute resolution, enforcementrequired to manage free trade. Those who focus on non-rational theories ( mental, cultural, organizational, epistemic, perceptual or bureaucratic) might stress an ideological disposition to accept mercantilist theory, shared historical analogies, a nd the psychological predisposition to avoid losses.To further illustrate the importance of patterns of policy interdependence, consider the following three hazard zero-sum, harmonious and mixed preferences. In the representative of zero-sum preferences, attempts by superior social groups in one state to realize their preferences through international action may necessarily impose costs on dominant social groups in other countries. This is a case of zero-sum preferences, similar to the realist world. Governments face a bargaining juicy with few mutual gains and a high potential for interstate tension and conflict.Many ancient cities and states, including those of antediluvian patriarch Athens, often imposed imperial tribute on defeated neighbors or, in extremis, killed the male population, cast women and children into slavery, and repopulated the townsfolk with their own citizensa built in bed approximating zero-sum conflict. Today, it might noneffervescent be argued that t here are certain casestrade in agricultural goods by industrial democracies, for examplewhere entrenched national interests are so starchy that no government seriously considers embracing free trade.In the case of harmonious preferences, where the externalities of unilateral olicies are optimal (or insignificant) for others, there are strong incentives for quietude coexistence with low conflict and (at most) simple forms of interstate coordination. For example, advance industrial democracies today no longer behold waging war on one another, and in some areas governments have agreed to mutual recognition of certain legal standards without controversy. One case of mixed preferences is bargaining, where states can achieve common gains (or avoid common losses, as with a war) if they agree to coordinate their behavior, but may disagree strongly on the distribution of benefits or adjustment costs.Under such circumstances, one of the most important determinants of bargaining power is t he intensity of the preferences of each party the more intense their preference for a beneficial settlement, the more likely they are to organise concessions (or employ arrogant means) in order to achieve it. Another situation of mixed motives is a situation where interstate coordination can avoid significant risks and costs, as in agreement to avoid naval incidents at sea, or to share information on infectious diseases. In such situations, institutional pre-commitments and the provision of greater information can often improve the welfare of all parties.Liberals derive several distinctive conceptions of power, very different from that of realism. One form of international influence, for liberals, stems from the interdependence among preferences that Keohane and Nye (Power and Interdependence) call asymmetrical interdependence. All other things equal, the more interdependent a state is, the more intense its preference for a given exit, the more power others potentially have ove r it while the less a state wants something, the less a state cares about outcomes, the less intense its preferences, the less power others have over it.Situations of asymmetrical interdependence, where one state has more intense preference for an agreement than another, create bargaining power. In trade negotiations, for example, smaller and poorer countries are often more dependent on trade and thus benefit more from free trade, and thus tend to have a weaker position and make more concessions in the course of negotiations. Enlargement of the European Union is a recent instance. Relative preference intensity can also influence the outcome of war, but in a different way.Nations are in fact rarely prepared to owe their entire economy or military in conflict, so their power depends not on their coercive power resources, but on their resolve or will. This is why smaller states often prevail over larger ones. Vietnam, for example, did not prevail over the US in the Vietnam War because it possessed more coercive power resources, but because it had a more intense preference at stake. From Assumptions to TheoriesTaken by themselves, these liberal assumptionsthe international system is anarchic, states are rational, social pressures define state preferences, interdependence among preferences dictates state behaviorare thin. They exclude most existing realist, institutionalist, and non-rational theories, but they do not, taken by themselves, define very hardly the positive content of liberal theory. Some might rightly complain that simply pointing to state preferences opens up an unmanageably wide function of hypothetical social influences on policy.Yet, in practice, research has shown that, in practice, the range of viable liberal theories that test out empirically are relatively few, focused, and sinewy. Three broad variants or categories of liberal theory exist ideational, commercial, and republican liberalism. At the core of each lies a distinct conception of the social pressures and representative institutions that define state preferences, and the consequences for state behavior. Some of these have proven, empirically, to be among the most powerful theories in international relations. Let us consider each in turn.