Impact of Financial Crisis on International Trade Essay Example for Free

Impact of Financial Crisis on International Trade EssayThe work described in this paper was substantially software documentationed by a grant from the Research Grant Council of the Hong Kong Special Administrative Region, China (Project no. HKUST6212/00H). 253 254 Zihui Ma and Leonard K. Cheng Forbes (2001) went further to occasion some statistics measuring the importance of trade linkages in transmittance crises. Because most economists agree that international trade is one of the important factors in explaining ? nancial crises, it calculates natural and crystal clear to ask the reverse hesitation what are the e? ects of ? nancial crises on international trade?Surprisingly, little research on this subject has been done. Perhaps the reason is that the dish appears to be obvious. Conventional wisdom would predict that a ? nancial crisis, by bringing about a recession in the macro thrift, would lead to a drop in imports. Exports, however, may rise because of both a decline in domestic demand and a devaluation of the domestic currency. A weakening or collapse of the ? nancial system, in particular the asserting system, however, might weaken the unpolisheds export capability. So the aggregate e? ects of a ? nancial crisis on the macroeconomy are unclear.This paper tries to ascertain whether the equivocalness can be resolved empirically. We divide all the past ? nancial crises into cardinal types banking crises and currency crises. These two di? erent types of crises had di? erent attributes and di? erent e? ects on international trade. This paper begins by analyzing theoretically the e? ects of banking and currency crises on international trade. Then it uses zygomorphous trade data, macroeconomic data, and geographic data to test the theoretical predictions. Overall, the empirical results provide support for the theoretical predictions.This paper contributes to the literature in two ways. First, it provides a theoretical manikin for understanding t he impact of ? nancial crises on international trade and the channels of crises transmittal through trade. Second, it estimates the e? ects of banking crises and currency crises on imports and exports. The estimated results can be employ to predict the impact of ? nancial crises on trade, thus providing useful information for risk precaution to policymakers. The remainder of the paper is organized as follows. Section 8. 2 reviews previous works on the relationship amid international trade and ? ancial crisis. Sections 8. 3 and 8. 4 analyze the e? ects of banking crises and of currency crises on trade, respectively. Section 8. 5 describes the data and methods used to estimate the e? ects of these crises. Section 8. 6 reports the results of empirical estimation and statistical testing. Section 8. 7 concludes. 8. 2 Literature Review Trade and Financial Crises Economists pay attention to the role played by trade in ? nancial crises for two reasons. First, trade imbalance has been sh own to be one of the important factors that trigger ? nancial crises. Current de? cits may decrease foreign reserves.As Krugman (1979) pointed out, a currency crisis is more apt(predicate) to happen in an economy that does non have enough foreign reserves. The E? ects of Financial Crises on International Trade 255 Second, ? nancial crises may be transmit through trade linkages from an a? ected country to others despite the latters relatively good fundamentals. In explaining such contagion e? ects, economists have act to identify the channels through which contagion was spread. As trade is the most obvious economic linkage between countries, much research has been devoted to this connection. piece the importance of trade imbalance in triggering crises is widely accepted, at that place is no agreement on the importance of trade in transmitting ? nancial crises. Eichengreen and Rose (1999) used a binary-probit model to test whether bilateral trade linkages transmitted crises betwe en industrial countries between 1959 and 1993. They found that the probability of a ? nancial crisis occurring in a country increased signi? cantly if the country had high bilateral trade linkages with countries in crises. They concluded that trade was an important factor.Glick and Rose (1999) conducted a similar analysis with more countries between 1971 and 1997 and obtained a similar result. Forbes (2000) used a companys stock market data to study the importance of trade in ? nancial crises transmission, and his result similarly showed that trade played an important role. However, other papers have provided di? erent answers to the problem. For instance, Baig and Goldfajn (1998) thought that trade linkage was unimportant in the East Asian Crisis because the direct bilateral trade batchs between these economies were very small.Masson (1998), analyzing the Mexican crisis and the Asian crisis, obtained similar results. All the papers that analyzed the relationship between trade and ? nancial crises ignored the reverse question how did ? nancial crises a? ect international trade? We argue that the e? ects of ? nancial crises on trade are a precondition for discussing whether trade transmits crises. If ? nancial crises do not a? ect countries imports and exports at all, how can ? nancial crises be transmitted through the trade channel? So before we analyze the importance of trade in transmitting ? ancial crises, we need to clarify the e? ects of ? nancial crises on international trade. As pointed out previously, little work has been done on this topic to date. It seems there is a impression that ? nancial crises only a? ect countries imports and exports through changes in the exchange rates. Because the e? ects of exchange rates have already been thoroughly analyzed before, it may seem that there is no need to study the question. However, this view may not be correct. A devaluation of a national currency will increase the volume of exports and reduce the volume of imports.Classic international trade theory shows that a devaluation improves the trade balance if the Marshall-Lerner condition is satis? ed. Because in a ? nancial crisis a country unremarkably experienced a devaluation of its national currency, the same analysis would apply, that is, the a? ected countries imports will decrease, but their exports will increase after the crises. Furthermore, ? nancial crises (including currency crises, banking crises, 256 Zihui Ma and Leonard K. Cheng or both) could withal a? ect trade through channels besides the exchange rate.Calvo and Reinhart (1999) pointed out that ? nancial crises usually caused capital account reversal (sudden stop) and triggered an economic recession. Mendoza (2001) showed that in an economy with imperfect credit markets these sudden stops could be an equilibrium outcome. The economic recession reduces not only domestic demand but also entireness output and export capability, whereas capital out? ow forces the countr y to increase export. Thus, whether exports increase or decrease after ? nancial crises is unclear without further analysis. Before we analyze how ? nancial crises a? ct the crisis countries imports and exports, let us ? rst de? ne ? nancial crises. Eichengreen and Bordo (2002) have provided de? nitions of currency crises and banking crises For an episode to qualify as a currency crisis, we mustiness observe a labored change in parity, abandonment of a pegged exchange rate, or an international rescue. For an episode to qualify as a banking crisis, we must observe either bank runs, widespread bank failures and suspension of convertibility of deposits into currency such that the latter circulates at a premium relative to deposits (a banking panic), or signi? ant banking sector problems (including but not limited to bank failures) resulting in the erosion of most or all of banking system collateral that are resolved by a ? scally-underwritten bank restructuring. (1516) The supra de? nitions are adopted in this paper. In the next two sections, we analyze the e? ects of banking crises and currency crises on the macroeconomy and trade. 8. 3 Impact of Banking Crises A classical framework of bank runs was developed by Diamond and Dybvig (1983). Let us recapitulate the key elements of their model. Agents are endowed with goods that can be invested in a long-run project or stored without costs.The long-term project is pro? table but illiquid, that is, if investors do not liquidate the project before it matures, its return is greater than the initial investment however, if the project is liquidated before it matures, the ? re-sale return is less than the initial investment. Each constituent can be impatient or patient with ? xed probabilities, but there is no aggregate uncertainty, that is, the total number of impatient agents is ? xed and known by all agents. At the beginning, agents do not know their own types but must decide if they will invest in the project.Afte r they have invested (or have decided not to invest), but before the project matures, each agent realizes his or her own type. Impatient agents must consume immediately, whereas patient agents do not consume anything until the project matures. Agents types are private information, so even if each agent knows his or her own type, other people do not know. The E? ects of Financial Crises on International Trade 257 On the one hand, if an agent does not invest in the project but turns out to be patient, then the agent has missed a pro? table investment opportunity.

Sugar in the 19th Hundreds, Problems Essay Example for Free

Sugar in the 19th Hundreds, Problems EssayWhat is the reason for the abandonment of bread orchards in the British West Indies in the 19th century? I am going to analyze and asses the reasons why sugar plantations were being abandoned by plantation proprietors in the 19th century? The main causes and the main effects. The abandonment of the Sugar plantations in the Caribbean leads to major changes and had a great effect on West Indian countries. So what caused sugar, a once thriving industry, to be abandoned? And what was the impact it had? ata collected forget assessed and analyzed to lowstand these effects, the causes and how they pertain to life in this century. Chapter 1 Introduction. Sugar cane was the main cash crop grown on numerous British, French and Spanish owned islands. Sugar was in high direct and was very profitable. But this industry needed labor and lots of it thus thralldom was the cheapest and best source of labor they had. Plantation owners would buy slave s brought from Africa to escape on their plantations. Plantation life in the 19th century was very hard, grueling labor, severe punishment and extensive exhaustion.Slaves worked for long periods of time in fields gather sugar, in factories producing sugar and the main house as workers (maids, butlers, and cooks ). The abandonment of sugar production was imminent to failure because of the ill treatment and over working. The United States was excessively a major factor in sugar abandonment, along with the feuded between British and the Spanish which lead to more problems. In my S. B. A I will asses these problems and the effects they had on both the economy and on the society.Chapter 2 Reasons for abandonment The abandonment of sugar plantations in the 19th century was caused by not wholly one factor but, it was caused by a collection of factors or a chain of events happening one after the other. Reasons for the abandoning of the sugar plantations started with the freedom of slav es, then from that event, nine-fold amounts of other events caused the sugar farmings to close. Emancipation was the greatest cause of Sugar estates being abandoned. The Emancipation Act was passed in 1830 in May and an ex and it stated that either men were equal and slavery was to be abolished.This in turn means that former slaves were free. These free men now had rights. So plantation owner had to net profit slaves, this was a great change from the former system they had. Work time for slaves had to be cut there were no long excessive amount of work hours, now it had to be a limited amount of time. Slaves could not be abused anymore and they could have refused to do the work. These factors caused a great stress on the plantation owners. They were losing more of their profit to pay wages, less hours of work were being done, and less sugar was being produced, in turn less profit.After Emancipation plantation owners taught that sugar production would have decreased, it did, for s ome countries. Smaller Islands production went up such as Barbados and Puerto Rico. These places, relatively all the land was used for estate purposes, so freed slaves had no other choice but to go back and work on the plantations. But in larger countries such as Jamaica where slaves detest plantation life and there was land untainted by settlement sugar production took a massive lost in profit. Everything changed by the obliterate of the 19th Century. Slavery had been abolished, and Europes beet sugar had preempted Caribbean cane.Depressed market values could not offset the production and transportation costs for an island crop, and sugar plantations soon were abandoned. Abolition of slavery was difficult for the colonies, which had to adjust to having a majority of new citizens who could not be denied the civil rights already grudgingly ext stopping pointed to the few. Extending those civil rights, then as now, was uncomplete easily nor gracefully achieved because the politica l systems had existed for centuries as the narrow instruments of the small, white, landed elite, largely absentee, whose members were threatened by the removal of their special trade preferences.Above all, there were frugal difficulties. Sugar prices were falling, and West Indian producers were facing severe competition not only from other producers in the British Empiresuch as India, South Africa, and Australiaand non-imperial cane sugar producerssuch as Cuba and Brazilbut also from beet sugar producers in Europe and the United States. Falling prices coincided with rising labor costs, complicated by the urgent need to get word the ex-slaves as wage laborers able and willing to bargain for their pay. Acts passed by the government.Acts passed by the Government in the 19th century contributed to the abandoning of plantations greatly. They were one of the most influential factors. If it was not for these Acts, in my option the sugar industry would have survived. Such as The Sugar Equ alization Act,1846 this law was passed because persons wanted cheap raw materials but the price of these items was very high. Politicians of the Manchester school convinced the British that duties were keeping the price at a high rate. Thus duties were removed from corn and sugar.Some farmersprophesied this was the end for sugar and along with The Encumbered Estates Act, 1854 the sugar industry looked grim. The Encumbered Estates Act stated that the government could seize plantations that were abandoned and could be sold with their debt and the new owner had to pay off this debt. The act was very short sighted and gave away to long term effects that prove to be disastrous Labor problems. To moderate labor difficulties, the local assemblies were encouraged to import nominally free laborers from India, China, and Africa under contracts of indenture.Apart from the condition that they had a legally defined term of service and were guaranteed a set wage, these Asian indentured laborers were treated like the African slaves they partially replaced in the fields and factories. Between 1838 and 1917, nearly half a million eastside Indians (from British India) came to work on the British West Indian sugar plantations, the majority going to the new sugar producers with fertile lands.Trinidad imported 145,000 Jamaica, 21,500 Grenada, 2,570 St. Vincent, 1,820 and St.Lucia, 1,550. Between 1853 and 1879, British Guiana imported more than 14,000 Chinese workers, with a few going to some of the other colonies. Between 1841 and 1867, about 32,000 indentured Africans arrived in the British West Indies, with the greater number going to Jamaica and British Guiana. With important British politicians such as Prime Minister William Ewart Gladstone (1809-98) owning sugar estates in British Guiana, that colony, directly administered by the crown, assumed great importance in the Caribbean.Chapter 3 Effects of Sugar abandonment in the Caribbean. Indentured labor did not resolve the pro blems of the plantations and the local governments in the Caribbean during the nineteenth century, but it enabled the sugar plantations to weather the difficulties of the transition from slave labor. The new immigrants further pluralized the culture, the economy, and the societies. The East Indians introduced rice and boosted the local production of cacao (the bean from which cocoa is derived) and ground provisions (tubers, fruits, and vegetables).Although some East Indians eventually converted to Christianity and intermarried with other ethnic groups, the majority remained faithful to their original Hindu and Muslim beliefs, adding temples and mosques to the religious computer architecture of the territories. The Chinese moved into local commerce, and, by the beginning of the twentieth century, the corner Chinese grocery store and the Chinese restaurant had become commonplace in all the colonies.Emancipation of the slaves provided the catalyst for the rise of an energetic, dynamic peasantry throughout the Caribbean. A large proportion of the ex-slaves settled in free villages, often forming cooperatives to buy split or abandoned sugar estates. Where they lacked the capital, they simply squatted on vacant lands and continued the cultivation of many of the food crops that the planters and the colonial government had exported during the days of slavery.The villages, although largely independent, provided a potential labor pool that could be attracted to the plantations. The growth of these free villages immediately after the emancipation of the slaves was astonishing. In Jamaica, black freeholders increased from 2,014 in 1838 to more than 7,800 in 1840 and more than 50,000 in 1859. In Barbados, where land was scarcer and prices higher, freeholders of less than 2 hectares each increased from 1,110 in 1844 to 3,537 in 1859. In St.Vincent, about 8,209 persons built their own homes and bought and brought under cultivation over 5,000 hectares between 1838 and 1857. In Antigua, 67 free villages with 5,187 houses and 15,644 inhabitants were established between 1833 and 1858. The free villages produced new crops such as coconuts, rice, bananas, arrowroot, honey, and beeswax, as well as the familiar plantation crops of sugarcane, tobacco, coffee, cacao, citrus limes, and ground provisions. Which lead to the integration of a wide variety of agricultural products?

Calorimeter used for calorimetry

Calorimeter used for calorimetryIntroductionWhat is a Calorimeter ? Definition A calorimeter is a thingmabob used for calorimetry, the science of measuring the affectionateness of chemical replys or physical changes as well as heat capacity. The word calorimeter is derived from the Latin word calor, importee heat. Differential s nominatening calorimeters, isothermal micro calorimeters, titration calorimeters and accelerated rate calorimeters are among the most customary types. A simple calorimeter just consists of a thermometer attached to a metal container full of water suspended above a combustion chamber.To find the enthalpy change per mole of a substance A in a reaction between two liquids A and B, the liquids are added to a calorimeter and the initial and final (after the reaction has finished) temperatures are noted. Multiplying the temperature change by the mass and specialised heat capacities of the liquids gives a value for the energy devoted off during the reaction ( assuming the reaction was exothermic.). Dividing the energy change by how many moles of X were present gives its enthalpy change of reaction. This method is used primarily in academic teaching as it describes the theory of calorimetry. It does not account for the heat loss through the container or the heat capacity of the thermometer and container itself. In addition, the object placed inside the calorimeter show that the objects transferred their heat to the calorimeter and into the liquid, and the heat absorbed by the calorimeter and the liquid is equal to the heat given off by the metals.FunctionsAs oneness of the devices used in the science of calorimetry, the calorimeter plays an important role in measuring heat capacity in a number of secure environments, as well as the physical changes that occur with the incidence of specific chemical reactions. This is some information about the ecumenic serve well of the calorimeter and how measuring calories related to the process of i dentifying heat capacity.Calorimeter is a term that is derived from the Latin word calor, which literally translates to heat. While most people understand the concept of calories as they relate to weight gain or loss, fewer individuals are aware that calorie content is determined by the ability of the substance to generate heat or energy as a result of the consumption. What the calorimeter actually does is identify the rate and scale of the occupation of that heat or energy and translates into numerical designations that can be used to adequately measure the production and the assimilation of heat and energy. Thus, when thinking in terms of counting calories, what is actually happening is thinking in terms of how much heat and energy will be generated and expended as a result. Calorie measurement has several important applications. One of the most common has to do with health matters. Because the calorie content of some foods is judged to be quite high, the result is that the energ y or heat created by the consumption of the foods must excite best use of that produced energy. If there is no efficient use of the calories, then the result is energy stored in the form of fat for later consumption. That is why the calorimeter is so important. Proper measuring of calories al lowlys people to more properly plan food intake to ensure that the body has enough heat or energy to function, still does not store excess energy as fat.Types of calorimeterThere are a number of different types of the calorimeter that help to measure energy and heat production 1 Adiabatic CalorimetersAn Adiabatic calorimeter is a calorimeter used to examine a runaway reaction. Since the calorimeter runs in an adiabatic environment, any heat generated by the material strain under test causes the sample to increase in temperature, thus fuelling the reaction.2 Reaction calorimeters A reaction calorimeter is a calorimeter in which a chemical reaction is initiated within a closed insulated cont ainer. Reaction heats are measured and the total heat is obtained by integrating heat scat versus time. There are quartette main methods for measuring the heat in reaction calorimeterHeat flow calorimetryHeat balance calorimetryPower CompensationConstant Flux3 miscarry calorimetersA bomb calorimeter is a type of constant-volume calorimeter used in measuring the heat of combustion of a particular reaction. Bomb calorimeters have to withstand the heavy(a) pressure within the calorimeter as the reaction is being measured. 4 Constant-pressure calorimeterA constant-pressure calorimeter measures the change in enthalpy of a reaction occurring in solution during which the atmospheric pressure remains constant.5 Differential scanning calorimeterIn a differential scanning calorimeter (DSC), heat flow into a sampleusually contained in a small aluminum capsule or panis measured differentially, i.e., by comparing it to the flow into an empty reference pan.6 Isothermal titration calorimeterIn an isothermal titration calorimeter, the heat of reaction is used to follow a titration experiment. This permits determination of the midpoint (stoichiometry) (N) of a reaction as well as its enthalpy (delta H), reciprocal ohm (delta S) and of primary concern the binding affinity (Ka).7 X-ray micro-calorimeterThe detector and X-ray micro-calorimeter, works by sensing the heat pulses generated by X-ray photons when they are absorbed and thermalized. X ray micro-calorimeter diagram.The temperature increase is directly proportional to photon energy. This invention combines high detector efficiency with high energy resolution, mainly achievable because of the low temperature of operation. Micro-calorimeters have a low-heat-capacity mass that absorbs incident X-ray (UV, visible, or near IR) photons, a weak link to a low-temperature heat sink which provides the thermal isolation needed for a temperature rise to occur, and a thermometer to measure change in temperature. 8 High-energy p article calorimeterIn particle physics, a calorimeter is a constituent of a detector that measures the energy of entering particles.9 Heat-loss calorimeterCross-section view of a heat-loss calorimeter. The heat developed inside the cell is collected by the national copper cup. Then, it flows through the silicone-rubber which serves as a thermal resistor and the outer copper cup, to the flowing water surrounding the outer copper cup.10 gunman calorimeter A tout calorimeter which uses an ultrasonic resonating chamber is in prototype state. It is based on the following mechanismPeriodic temperature changes are produces in the gas-filled resonator nether region by heat absorption,These temperature changes lead to variations of the velocity of sound c via the temperature dependence of c,The change of the velocity of sound results in periodic changes of the tuning of the ultrasonic resonator,The detuning of the resonator is measured by lock-in techniques,The device is simultaneously calibrated an additional heat source at a frequency different from the one to be measured. gasoline calorimeter types Junkers Gas CalorimeterAlso known as Gas Calorimeter, Junkers Type Used for determination of calorific values (1000 Kcal/m3 26000 Kcal/m3) of fuel / flue gases at low pressures (2 to 12 W.G)Boys non-recording gas calorimeter The P5615 Boys Gas Calorimeter Set supplied by Cussons has been developed, from apparatus designed by the late Sir Charles Boys F.R.S., to provide a simple but accurate method of ascertaining the calorific values of a wide range of gaseous fuels currently in use. As such it is a necessary item of equipment in any thermodynamics science lab and is applicable to craft and vocational courses in gas engineering and technology.DESCRIPTIONThe two main items of equipment in the apparatus are the Boys non-recording gas calorimeter fitted with appropriate burners in the base, and a precision, Hyde type gas meter with a capacity of 2.0 litres/rev consis ting of a specially designed measuring drum housed in a air-tight casing and sealed with water. The whole set is manufactured to a very high standard and is supplied with all necessary accessories including thermometers with reading lenses, measuring vessels and a general purpose set of four burners for town and coke oven gas, inseparable and methane gas, butane, propane, acetylene, ethylene and propylene.Tru-Therm H Gas Titrator Gas CalorimeterThe Tru-Therm Model H real time natural gas calorimeter is a continuous measurement calorimeter instrument that determines calorific Heating Value, Specific Gravity, and WOBBE measurement of natural gas, with continuous rate of update of 10 seconds. hot Heating Value is determined by the stoichiometric micro combustion of natural gas. Natural gas and air are supplied to a small orchestration burner (about 1/2 inch cube) where the flame temperature is directly measured by a thermocouple.The thermocouple provides a signal to the Measuremen t Engine Control Computer, which in-turn regulates the flow rate of gas to achieve the maximum temperature of combustion. This occurs at the Stoichiometric Point. The gas flow rate that corresponds to this temperature is determined by a precision flow-meter which is sensed by the Measurement Engine Control Computer.Differential Thermoelectric Tritium Gas CalorimeterA device for measuring the amount of any reactive gaseous component in a single gas or in a mixture of two or more gases. The device comprises a reaction chambre, at least(prenominal) one means for supporting a removable catalyst suitable for catalysing the reaction between the reactive component and the gas or gases and at least one heat sensor for detecting and measuring the heat produced or absorbed by the reaction between any reactive component and one or more other gasesExhaust Gas CalorimetersThe Exhaust Calorimeter comprise a multi-tube exhaust gas heat exchanger in which the exhaust gases principal through the t ubes and the temperature reduction water flows outside the tubes. An exhaust gas sampling point with shut off cock is provided. The cooling water circuit is fitted with a flowmeter on the inlet and a flow control valve on the outlet side. Note that the unit must be arranged for contra flow that is the exhaust gas and cooling water must flow through the heat exchanger in opposite directions. Temperature measuring points are provided for exhaust gas inlet and outlet, and cooling water inlet and outlet. The instrumentation is sufficient to enable the heat content of the exhaust gases to be accurately determined.

Major Causes Of Information Systems Failure Information Technology Essay

Major Causes Of schooling Systems Failure teaching Technology EssayWhat atomic number 18 the major causes of exploitation constitutions failures. What strategies can organisations take to front the challenges and guarantee the victor.An development system project according to Ewusi-Mensah (1997) is any breeding technology project intended to butt the information typeset to dallying extremity of an organization. In Critical issues in abandoned information system projects, Ewusi-Mensah(1997) stated that information system projects instruction execution requires collaboration of information system staff that deploys and educate on the use of the software to drive the project, end users and heed. It is a concourse-oriented activity organized and executed in aggroups and therefore subject to the unpredictability of group dynamics, actions, coordination, and chat ( Ewusi-Mensah ,1997).An information system is a set of elements (people, selective information, and proc edures) working together to provide useful information (Senn, 1990, p8). Also, information system (IS) is any set of information technology and peoples activities development that technology to backup operations, guidance, and decision-making (SEI Report, Glossary ). In a wider sense, the word information system is often used to refer to the relationship between people, algorithmic processes, entropy and technology. in that locationfore, the term is used to refer not only to the information and communication technology (ICT) an organization uses, but also to the way in which people interact with this technology in allow of business processes (Kroenke, D. M. 2008). An information system consists of computers, instructions, stored facts, people and procedures.A systems failure occurs when a system does not meet its requirements or when the take aim of discontentment with a system increases to the level that there is no enough provision to sustain it. culture system project fail ure may be as a result of its inability to meet users requirements and/or overruns pertaining to budget or completion time (Yeo, K. T. 2002). Studies have shown that many failed projects are over budget, roughly by as much as 189%. May, L (1998) in Major causes of software failure stated that only one-sixth (16.67%) of projects are finished as schedule and within budget. An information system failure can cause fiscal loss, commercial embarrassment, loss of customers and revenue streams, sanctions and the loss of staff morale or stakeholder allegiance in an organization. Examples of system failures includes an alarm system that fails to sound when pressed, an automated door that fails to open and close on its own accord on approach, ammo that detonates prematurely, and other similar conditions.This article discusses the causes of information system project failures and strategies organizations can take to face the challenges and ensure success.The Standish group (1995) in (Yeo, K. T. 2002) classified project consequence as fictitious character 1, Type 2 and Type 3. According to the group, 16.2%,52.7% and 31.1% of projects fall into Types 1,2 and 3 classes respectively.A booming project classified as the Type 1 projects are those that were successfully implemented within the stated time and budget with all required features and functionality specified. The challenged projects classified as the Type 2 projects are those that behave budget overruns and/ or program slips thereby failing to completely achieve its goal even though they are completed and operational temporary hookup Type 3 project classified as the Impaired projects are those cancelled or abandoned at some point during the development cycle The Standish group (1995) in (Yeo, K. T. 2002). Technical failure may not necessarily be the cause of project impairment, lack of adoption of a technically faultless Information system project by end users or corporate management consequently resulting in it s lack of use or chthonianutilization denotes failure (Yeo, K. T. 2002). From this view point, Information system is said to be a socio-technical system. Land and Hirschheim (1983) described an information system as a social system that uses information technology. This can be explained in the sense that as a technical system, a system that fails in an organization can be successfully implemented in some other organization eyepatch as a social system an Information system can be successfully implemented in an organization while the implementation of another information system can result in failure (Davies G. B. et al, 1992).Information System as a type of socio-technical systemThe mediating sentiment between actions and technology is refer to as information systems.(Beynon-Davies P. 2009). The technical system dimension consists of both operational and functional features. The operational features apply to the technology(effectiveness of the hardware or software as hale as the friendliness of the technologys user interfaces) while the functional features relate to the performance relative to expected functionality .Technology as a component of the technical system refers to hardware, software and other related technology. This pertains to the functionality of the system, whether it is up or down when a person exacts to use it. user interfaces refers to the interrelate between the human user and the software/hardware technology (input screens, output screens, paper input forms and paper output reports). Error rates in the exchange of data from one medium to another and the time that users require to become familiar with the system all constitute indicators of performance of the implemented system while Information requirements as a technical system component refers to the ability of the Information system implemented to give new capabilities than the one universe replaced. certain study of the organization to know its information need is essential ( D avies G. B. et al).The social system refers to the features of organizational setting which exist in an organization even as people enter and leave the organization.The components of this system include acceptance/rejection of the technical system, theories in use, measures of performance to expectation and the developmental process of the system. Rejection or underutilization may be based on the premise that the introduction of new technology is instrumental to deskilling or job loss (Davies G. B. et al, 1992).Characteristic features of Information system projectInformation system projects are capital and labour intensive usually requiring a extensive sum of money to implement. Its failure can cause a huge financial loss to an organization and therefore there is need for adequate planning before its implementation to ensure that desired expectations are met.An information system is a type of socio-technical system which is critical to the survival and well-being of companies. As a result, the right technology must be deployed and the end users educated on its use and benefits.Also, Brooks in Ewusi-Mensah (1997) stated that IS projects are conceptual in nature (i.e. it is pure thought stuff which is invisible and unvisualizable).In addition, there are certain risks and uncertainties such as large project size, unfamiliarity with the new technology and unstable information requirements associated with projects that are difficult to assess prior to the engender of the project.IS projects as stated earlier are group oriented requiring members from contrasting backgrounds and therefore require a high degree of coordination and clear lines of communication to ensure success Ewusi-Mensah (1997).Reasons for Information System implementationTo increase productivity in order to maintain competitive advantageTo enhance business operations with the re-engineering of an organisations processesChanges in activities of an organisation or in the nature of the organisatio n.Technological Changes can lead to new production processes or using alternative materials in the manufacturing processClassification of system failuresThere are four major categories of Information system failure according to Lyytinen and Hirschheim (1987). The categories are as followsProcess failure this occurs when an Information system project cannot be developed within an allocated budget and/or time schedule. The project development results in overspending in both cost and time. residue failure this occurs when the objectives and goals of the systems design are not met.Interaction failure this is attributed to the level of end-user usage or adoption or acceptance of the implemented information system. User attitudes, data packets, user satisfaction and the degree of adoption are measures of usage of information system usage.Expectation failure this is the inability of a system to meet its stakeholders requirement, expectations or valuesAnother classification of failures acc ording to Ben Meadowcroft in Why Systems fail isHard ware design/specification errorSoftware developmental error this is error due to imperfect software development as a result of inadequate test run of the program and poor user interface among othersEnd user error this arise a result of inadequate homework and/or user foeman.Majors causes of information systems failure unclear goals lack of well defined project goals and objectives which is key to the success of any IS project development. There is also need to state clearly the information need of an organization and also the adoption process before attempting to introduce an information system(Lucas in Davies G. B. et al 1992)Improper reporting structure/Miscommunication since the development of large IS projects is the work of a team drawn from diverse groups of people with responsibilities to ensure the projects success which includes IS staff, end users and senior management, there is need for the establishment of clear lines of communication and well defined lines of authority and responsibility among team members. Communication in project teams is essential to sort out dispute concerning requirements of design decisions among project members (Curtis et al 1988). unenviable/incompetent leadership Poor management of the project and lack of good leadership responsible for coordination and control, measurement of progress and making of resilient decisions at different phases of the project.Poor technology base or infrastructure lack of adequate technological base needed for successful implementation of the kind of systems development being considered. According to Land in G. B. Davis et al, the distance between the existing system and the replacement system is essential for the success of an information system.Poor project management this has to do with inadequate measurement system to measure progress and equally identify potential risks in time to mitigate them.Lack of technical competence the technol ogical know-how of information systems staff is very vital to the success of IS projects as lack of familiarity with an information technology new to the IS staff is contributory to IS project failure. If a user is improperly trained then the likelihood of them making major errors is increased due to their lack of association of the system. Failures by reason of lack of training should not be regarded as an error due to the individual operator as is likely with a poorly designed user interface, but as a mistake by the management.Scope creep projects excessively grand in scope usually have higher risks and higher complexities and therefore more prone to failure. Scope is the initial blueprint of an implementation plan.Faulty hardware faulty hardware can bring about serious system failure. This ingredient is then again an essential one that should be given due consideration together with the more common software errors. Faulty hardware should be taken into thought when designing th e systems in order to try and reduce the impact of the failure. Hardware failure is not as likely to occur as software faults but can be as damaging.Poor selection decision of project team members the project team composition is also vital for the success of the information system project.Strategies organisations can take to ensure success of information system projects.Firstly, to ensure success of information system projects there is need for a clear and well defined IS goal. Every member of the IS project management team as well as stakeholders should know the specific information requirement of the organization as well as how to go about satisfying it. This is important to guide the information requirements phase of the development process. Failure in this area leave alone lead to fragmented efforts and lack of focus in assembling facts to guide the rest of the development (Curtis et al 1988).Secondly, the selection of competent and subject staff to serve as members of IS proj ect team is very vital for successful project implementation (Brooks, 1981). Team members should be those with real prior inhabit and who are equally familiar with the technology being deployed. Improved training of the end users will significantly reduce system failures and improve the integrity of data stored on the computer systems. The project team should consist of the most successful people of the organization (Nah et al, 2001). Lockheed Martin, a leading aeronautical group, stated that one of its keys to success was assembling a team capable of making and executing changes required (Stedman, 1999)Also, the imposition of structure on the developmental effort of the project helps to guide it to successful completion. It involves the division of the project into phases which helps the project team realize what deliverables for each stage are and to know the extent to which they have been met.It is also important that clear lines of authority, communication and responsibility am ong team members be drawn. This is important since the team members are drawn from diverse units.Selection of competent leaders who will ensure that proper management and control practices are adhered to and enforced in the implementation process of an Information system is vital. Adequate safeguards and oversight by management is necessary to ensure technical personnels compliance with accepted industry standards for reporting and dealing with problems uncovered in any phase of system development. The leader should be one with both application-domain knowledge and software knowledge.There should also be regular periodic meetings to discuss the systems development effort. A successful implementation of a project is only possible when high-level executives possess a strong commitment to the project (Davenport, 2000). Senior executives at Farmland Industries demonstrated its support to project team members by providing financial incentives to motivate the project team members.The tec hnological infrastructure available in a company needs to be critically assessed to determine it is adequate to support the kind of system development that is to be implemented. Care should be taken not to embark on IS project development until management have the arrogance that the companys technological base is adequate. Assurance from the Management Information System management should be taken to reduce the risk s and uncertainties associated with system development works.There is need for the maintenance of scope. The ability to maintain scope is related to planning and this is attainable for companies both small and large. Geishecker (1999) stated that Colgate-Palmolive Company itemised scope maintenance as a contributory factor to their success. The roll out approach for the implementation of the information system project is a very important consideration under scope maintenance. There are two approaches namely the big bang approach and the gradual (phased) rollout approach . Both approaches have their prons and cons. Oil giant Chevron attributes a phased roll out to the successful implementation of an information system project. Home Depot has also successfully implemented several modules of an Information system using the phased roll out approach (Mearian, 2000). Phased roll-out approach though more expensive and usually taking longer time, offer reduced business risk (Davenport, 2000). familiar readiness/training is also vital for the successful implementation of an information system project. The most common failure factor recorded was that of readiness for change. every employees must be trained on the new system in order to prevent underutilization of the system. Also managers must understand the implication of the system and the changes it will cause. If managers are not in agreement or cooperation, then there will be no eagerness or buy-in and this may result to resistance or lack of adoption of the new system (Davenport, 2000).Planning/develo pment /budgeting are necessary for the success of an information system project. Planning should be about identified with maintaining scope during an implementation. Ineffective planning results in cost overruns and development delays. Home Depot, Lockerheed Martin and Mead Corporation are examples of companies attributing success to planning. As stated earlier, many projects oddly failed ones are over budget, some as much as 189 percent.Adequate exam of the system is a key element for the successful implementation of the system. It is inform that Gillette Company withstood five months of severe testing procedures before their successful go-live date (CIO, 2000). Also, Eastman Kodak was able to complete what at the time was the largest implementation on record as a result of testing (PR Newswire, 2001). Whirlpool Corporation attributes inadequate testing as its single reason for unsuccessful and costly implementation. The company gambled on its testing program by cutting down th e amount of time needed to test run the new system before implementing it in a offer to meet deadlinesConclusionThe goal of this was to identify the major causes of information systems failures and strategies organisations can take to face the challenges and ensure the success? Towards this goal different articles and journals were examine. The project team compostion, management support , internal readiness of the employees, existence of technolgical infrastructure able to support and sustain the new system to be implemented, well defined goals which is in line with the organizations goal, adquately tested system, clear and well defined reporting structure and good leadership are all vital ingredients to ensure the successful implementation as well as utilization of a newly deployed information system. It is to be noted that even though a system technically faultless, underutilization as a result of lack of full acceptance or understanding of how to adopt the information system fo r day to day operation amounts to failure of the information system. For this reason, the management must enlighten the users of the deployed information system on the need for the change as well as attached benefits.Finally, though appropraite measures should be put in place to prevent failure of the information system project, they may still occur but when they occur, a system failure analysis which is an probe to determine the underlying reasons for the nonconformance to the system requirement in order to identify the causes of nonconformance equally recommend appropraite correction measures. This is because failure could have benefits expecially in relation to learning,especially in understanding the developmental process of a system and steps to take to prevent failure of future Information System development projects.Word Count = 2,932REFERNECESMearian, L. (2000), CEO SAP installation caused problems, ComputerWorld, Vol. 34 No. 48,p. 20.Nah, F.F., Lau, J.L. and Kuang, J. (200 1), Critical factors for successful implementation ofenterprise systems, Business Process Management Journal, Vol. 7 No. 3, pp. 285-96.Ben Meadowcrof, Why Systems Fail. http//www.benmeadowcroft.com/reports/systemfailure/Beynon-Davies P. (2009). The language of informatics the nature of information systems. International Journal of Information Management. 29(2). 92-103CIO (2000), Does ERP build a better business?, 15 February, pp. 114-24.Davenport, T. (2000), military mission Critical Realizing the Promise of Enterprise Systems, Harvard Business School Publishing, Boston, MA.Geishecker, L. (1999), ERP vs best of breed, Strategic Management, March, pp. 63-6.Land, F. and Hirschheim, R. Participative Systems Design Rationale, Tools and Techniques, Journal of Applied Systems Analysis, Vol. 10, 1983.Lyytinen, K. and Hirschheim, R. Information Systems Failures A Survey and Classification of the data-based Literature, Oxford Surveys in IT, Vol. 4, 1987, pp. 257-309.May, L. (1998), Major causes of software project failure, Crosstalk, July.The Standish Group. The CHAOS Report (1995), 1995. http//www.standishgroup.com/chaos.html.

Pinpoint Colluding Attackers for Software-as-a-Service Cloud

Pinpoint Colluding Attackers for Softw be-as-a- process fogAbstract- softw ar package as a Service (SaaS) is a distribution model of software in which work supplier or vendor develops industrys and these are accessible by the customers over a network. SaaS bedims are vulnerable to catty attacks beca determination of their sharing nature. IntTest, returns integrity testimony framework has been anticipated and it uses a novel integrated proof graphical record analysis break out to pinpoint attackers. scarce IntTest has still a limitation that attackers stick out still escape the detection if they have less variation links than benign usefulness providers. In this constitution, we present help junto generator along with the IntTest in order to detect the attackers more in number. Also, Result railcar Correction is provided to castigate the incorrect results provided by the attackers. Our experimental results shows that our dodge is effective and can achieve higher verity in pinpointing the attackers more in number than the existing approaches. baron Terms- Cloud Computing, Integrity certification, Multitenant, SaaS, Function Combination Generator1 INTRODUCTIONCloud computing depends on resource sharing over a network. Cloud computing mainly relies on improving the efficiency of shared resources. Cloud provides run like Software as a Service (SaaS), Infrastructure as a Service (IaaS), and Platform as a Service (PaaS). This paper mainly deals with Software-as-a- answer. Software as a Service depicts any cloud service w present providers deploy their applications and consumers use those applications through a client interface such as web browser. Software as a Service and Service point Architecture (SOA) 4 provides certain concepts for the evolution of Software as a Service clouds 1 (e.g., Amazon Web Service (AWS) 2 and Google App Engine 3). SaaS clouds provide a way for application service providers (ASPs)5, 6 to transport their application s through the huge cloud computing infrastructure 7. Figure 1 shows the origin of Software as a Service deployed on either public, private or hybrid cloud and its relation with the end user. As ASPs from different security domains shares Cloud Computing infrastructures, they are vulnerable to attacks.As Cloud Computing attracts many providers due to its cost-effective concept, it has become very popular at recent. This paper concentrates on service integrity attacks on SaaS clouds. The user gets the mischievousness results due to these integrity attacks when askinged for a service. Figure 2 shows the integrity attacks in SaaS clouds. Multitenant architecture is unitary that is responsible for most of the SaaS cloud solutions. In the previous research, only privacy protection and confidentiality problems have been widely stated, but the service integrity affirmation was not clearly addressed. Service integrity is one of the main problems that need to be solved despite whether t he public or private clouds process the data. Various researchers have presented certain service integrity attestation schemes but the problem is that they require secure kernel or trusted computer hardware hurt. Because of these problems, Multitenant cloud computing does not carry those schemes. Later, Juan Du has proposed IntTest, an efficient framework for full-grown scale cloud systems. A novel integrated attestation graph analysis scheme has been provided by the IntTest that detects the attackers more when compared to the existing schemes. But the problem here is that the attackers can still escape the detection if they have less in consent links than benign service providers. i.e., If only one order of service turns is accustomed by the providers for a service, the attacker acts as genuine and colludes with other attackers and provides counterfeit results. With this, all the inconsistent results caused by the attackers are not detected completely and the pretended resul ts are assumed as good one and provided to the users. With this, we can enunciate that that IntTest cannot detect the colluding attackers.In this Paper, Function Combination Generator is provided for the IntTest to cross the limitation. Function Combination Generator along with IntTest can attain more attacker identifying accuracy than existing schemes like Run Test and AdapTest. In particular, AdapTest and RunTest with the other conventional choose schemes wants to moot that benevolent service providers take bulk in every service function.Figure 1 Software-as-a ServiceTo make the targeted service functions as malicious, more or less(prenominal) attackers may launch on colluding attacks in large scale multitenant cloud systems. In order to overcome this problem, IntTest with FCG adopts a systematic method by exploring the both consistency and inconsistency relationships betwixt various service providers in the whole cloud system. The per-function consistency graphs and global inconsistency graphs have been validated by the IntTest. The attackers can be detected more effectively, it does not al slump the attackers to escape as well as reduces the scope of damage caused by the attackers by using Function Combination Generator with IntTest. With the scalable IntTest along with Function Combination Generator, the burden provided with attestation can be reduced to an extent than any other schemes.This paper provides the below implementationsIntTest, an efficient and scalable service integrity attestation framework for broad cloud computing infrastructures.Function Combination Generator that generates different ascertain of orders for a particular mess of functions for the given service.Baseline and Integrated attestation schemes that attains more attackers pinpointing than the existing schemes.Result auto correction method that eventually replaces the fake results provided by the colluding attackers with the correct results.The rest of this paper is organiz ed as follows. Section 2 presents the related work. Section 3 presents the proposed Work in detail. Section 4 presents the design. Finally, the paper concludes in air division 5.Figure 2 Integrity attacks in cloud based data processingWhere,Sn= different service componentsn= 1, 2, 3, 4, 5, 6, 7VM= Virtual Machines2 RELATED WORKSaaS clouds are given with various integrity attestation schemes in recent years. The hold up scheme, TEAS, RunTest and AdapTest are some of the schemes but these in turn have some issues that are to be dealt with. Some of them want trusted hardware and support of secure kernel. BIND 10 (Binding culture and Data) is one that requires secure kernel or a third party support. To verify the service integrity for SaaS clouds, BIND exhibits the fine grained attestation framework. This BIND scheme follows these steps. 1) certification annotation mechanism. 2) Sandbox mechanism. 3) Verification of au whereforeticator through hash. In order to address the service i ntegrity attestation, Diffee-Hellman key has been used by the BIND scheme. TEAS 11 (Timed Executable Agent System) is another provided scheme that address the integrity for SaaS clouds. It uses Agent generation and verification algorithm. But the problem is that it is not scalable and does require trusted hardware.RunTest 8 has been proposed later with further corrections. RunTest, a scalable runtime integrity attestation framework attains the data flow processing integrity in cloud. It promotes light-weight application level attestation mechanism. With this, it identifies the attackers when inconsistent results are detected and also integrity of data processing results is examined. This RunTest gives the information on who are benign service providers and also the attackers stealthy behaviour. The blemish that RunTest has is its low performance. The AdapTest 9 is another existing scheme that presents a novel adaptive data driven runtime service integrity attestation framework to v erify the service integrity in SaaS clouds. It reduces the detection delay and also the attestation overhead. It treats all the service components as black boxes so any special hardware support is not needed by the AdapTest. The disadvantage is that detection rate is low. So later, to overcome all the limitations of the existing schemes, IntTest has been proposed. Any secure kernel or hardware support is not needed by IntTest as it also treats the components as black boxes. IntTest provides more detecting accuracy than above all the existing schemes. But still the IntTest has a limitation that attackers try to escape the detection by colluding with the other attackers. So, we proposed Function Combination Generator technique to be used with IntTest to overcome the limitation. With this Function Combination Generator with IntTest, thither is no chance for the attackers to escape.3 PROPOSED WORKSoftware as a Service clouds are evolved from the basic concepts of Software as a Service a nd Service Oriented Architecture. It provides a way for the application service providers to build their applications and transport them through cloud computing infrastructure. Here, we are proposing a new technique called Function Combination Generator for IntTest. To pinpoint all the colluding attackers is the main goal of IntTest with Function Combination Generator. And it should not make attackers to escape from detection. Various service providers are negotiated by a single attacker in multitenant cloud systems.Here, certain assumptions are made by the IntTest. First, in the whole cloud system the total number of benign service providers is greater than the malicious service providers. Without this assumption, the IntTest scheme does not work properly. Second, the data processing services are input deterministic. Whatever input is given by the benign service component, it should produce the similar output. Third, the hardware and software faults that grounds the result inconsi stency are marked by fault detection schemes 12 and can be removed them as malicious attacks. Figure 3 depicts the overall architecture of our proposed work.The architecture flows like this. At first the user requests the cloud for a particular service, and that requested service is deployed in the cloud and promotes that request to SaaS. SaaS cloud process the request and generates the result to the cloud. Next, Function Combination Generator regulates different set of orders for service functions and then IntTest checks the consistency and inconsistency relationships and then identify the malicious attackers. Result autocorrection corrects the bad results produced by the attackers and stores the corrected data and finally corresponding good results are sent to the user. Figure 3 Architecture4 DESIGNIn this section we present the design of the proposed system. First, we present the Function Combination Generator. We then describe baseline and integrated attestation schemes and next , we present the result autocorrection scheme.4.1 Function Combination GeneratorService is one that consists of several(prenominal) components that in turn consists of different number of functions. Service may contain any number of functions like f1, f2, f3, f4 etc. When the SaaS cloud generates the service as per requested by the user, then the Function Combination Generator generates different set of patterns for the functions such as f1, f3, f2, f4 and f2, f3, f4, f1 and soon. By generating like this, there we can see that the attackers cant escape from detection. Function Combination Generator is an efficient technique provided with the IntTest to detect the colluding attackers in large number.4.2 Baseline Attestation SchemeIntTest is mainly used to detect the service integrity attack in SaaS clouds and also pinpoint malicious service providers. In Cloud Computing, several providers develop the comparable function as they are popular. Function Combination Generator after gener ating patterns sends the results to the IntTest. IntTest then obtains the consistency and inconsistency relationships among the different service providers for a particular set of service function generated. Figure 4 depicts the consistency check mechanism. As shown in the figure 4, the service providers are p1, p2 and p3. The same function f is developed by all the providers. Portal node is one that has global information like number of ASPs etc., It acts as a gateway to use the services. Provider p1 first receives the original data input p1 from the portal node and generates the result f(d1). Again provider p3 receives the duplicate of d1 and generates the result f(d1). Next the relationship between the providers is derived. If both the providers generate the same result, they are said to be consistent with each other. If not they are inconsistent with each other, then we can say that one of them is malicious. Like this, we derive the relationships among various service providers. Figure 4 Consistency Check4.3 Integrated Attestation SchemeNow, an integrated attestation graph analysis algorithm is given here.Step 1 Consistency analysis Based on the consistency relationships derived by the Baseline attestation scheme, we derive per-function consistency graph as shown in figure 4(a).. With this, the distrustful service providers can be identified. The consistency graph presents certain consistency links among a set of service providers. Those service providers give same results for every specific service function. Like if service providers p1, p2 give consistent results for a function f1, they give the same consistent results for all functions like f2, f3, f4 and so on. The benign service providers who give consistent results for a particular function will form a bivouac in terms of consistency links. With this per-function consistency graph, we cannot clearly identify who the attacker is. So, we must also consider inconsistency graph too.Figure 4 Attestation G raphsStep 2 Inconsistency analysis The global inconsistency graph as shown in figure 4(b) is derived from the inconsistency relationships drawn by Baseline attestation scheme. This graph contains only inconsistency links, there may involve various possible combinations of benign node set and malicious node set. Here, we have to believe that total number of malicious service providers is not greater than max number of malicious service. Function Combination Generator generated different set of patterns for a particular service. By generating like this, there is no chance for the attackers to escape as they give inconsistent results with all the patterns when consistency check is done. If any provider gives only incorrect results with all the patterns, we confirm that provider as a corrupted one. Like this, we will find the attackers more in number.4.4 Result Auto CorrectionTo regularly correct the bad results provided by the attackers, Result Autocorrection is provided. IntTest with Function Combination Generator can not only pinpoint malicious service providers and even autocorrects the bad results with good results and thus improving the result quality of the cloud data processing service. With the absence of attestation scheme, any malicious attacker can change original input data and with this the processing result of that input will be corrupted which will result in lush result quality. IntTest presents attestation data and correct compromised data processing results.Function Combination Generator given with IntTest, it can achieve higher detection accuracy than any other techniques when malicious service providers attack more nodes. This method will identify the attackers even though they attack a very low percentage of services. This technique can achieve higher detection rate than any other existing scheme and will have low faux alarm rate than others.Comparison StudyBelow is the table that compares various parameters like detection rate, time and att estation overhead among various approaches like AdapTest, RunTest, and IntTest with no Function Combination Generator and IntTest with Function Combination Generator.5 CONCLUSIONIn this paper we introduced a technique called Function Combination Generator for IntTest, a novel integrated service integrity attestation graph analysis scheme for multitenant software-as-a-service cloud system. Function Combination Generator generates diffsaerent set of patterns for service functions and then IntTest uses a reply based consistency check to verify the service providers. IntTest with Function Combination Generator analyses both the consistency and inconsistency graphs to find the malicious attackers efficiently than any other existing techniques. And also it provides a result auto correction to improve result quality.

Hackers Today :: Essays Papers

Hackers TodayOver the last twenty years, a technological revolution has occurred as computers are now an essential element of todays society. Large computers are used to track reservations for the airline industry, process billions of dollars for banks, manufacture products for industry, and conduct major transactions for businesses because more and more people now have computers at substructure and at the office. People commit computer discourtesys because of societys declining ethical standards more than any sparing need. According to experts, gender is the only bias. The profile of todays non-professional thieves crosses all races, age groups and economic strata. calculating machine criminals tend to be relatively honest and in a position of trust few would do anything to harm an new(prenominal) human, and most do not consider their crime to be truly dishonest. Most are males women have tended to be accomplices, though of late they are becoming more aggressive. Computer Crimi nals tend to usually be between the ages of 14-30, they are usually bright, eager, highly motivated, adventuresome, and willing to accept technical challenges.(Shannon, 162) It is tempting to liken computer criminals to other criminals, ascribing characteristics somehow different from normal individuals, tho that is not the case.(Sharp, 183) It is believed that the computer criminal often marches to the same drum as the potential victim but follows and unanticipated path.(Blumenthal, 12) There is no actual profile of a computer criminal because they range from young teens to elders, from black to white, from short to tall. Definitions of computer crime has changed over the years as the users and misusers of computers have expanded into new areas. When computers were first introduced into businesses, computer crime was defined simply as a form of white-collar crime committed inside a computer system.(2600Summer 92,p.13) Some new terms have been added to the computer criminal vocabul ary. Trojan Horse is a hidden code put into a computer program. Logic bombs are implanted so that the perpetrator doesnt have to physically present himself or herself. (Phrack 12,p.43) other form of a hidden code is salamis. It came from the big salami loaves sold in delis years ago. Often people would take small portions of bites that were taken out of them and because they were secretly returned to the shelves in the hopes that no one would notice them missing.(Phrack 12,p.44) Congress has been reacting to the outbreak of computer crimes.

Connection Between School Culture and Leadership Styles :: Leadership

There is a connection between school culture and leadership styles. The books review will also address the two basic categories of leadership. According to Cox (2001), there are two basic categories of leadership which are transactional and transformational. The quest scholars (Barnett, McCormick & Conners, 2001) made the distinction between transactional and transformational leadership. James McGregor Burns (1998) introduces Burns the difference between ordinary (transactional) and extraordinary (transformational) leaders. According to James McGregor Burns (1998) transactional leaders exchange tangible rewards for the work and loyalty of pursual, and (transformational) leaders are the ones who engaged with followers. Additionally, the focused on higher order intrinsic needs, and raised consciousness about the importation of specific outcomes. (Bernard Bass, 2003) introduces the conception of transactional and transformational leadership. He states that they are separ ate concepts and that good leaders demonstrate characteristics of both. Bass (1990b, p. 21) states that Transformational leadership fosters capacity development and brings higher levels of personal payload amongst followers. However, transformational leadership occurs when leaders broaden and elevate the interests of their employees. (Kelly, 2003 Yukl, 1989) asserts that Transformational leaders elevate people from low levels of need. Transformational leaders are said to create trust, admiration, loyalty and respect amongst their followers (Barbuto, 2005, p. 28). (Rice, 1993) determines that Transformational leadership is also based on self-reflective changing of values and beliefs by the leader and their followers. From this emerges a key characteristic of transformational leadership. According to Gronn (1996) the literature in educational leadership offers no single conception of the processes that constitute transformational leadership. Gronn (1996) makes emph asis on the close relationship between charismatic and transformational leadership. He point out the absence of notions of charisma in some work transformational leadership. (Leithwood & Jantzi, 2000) introduce the four main factors that make up transformational leadership whereas. They introduce the four main factors which are 1.) view influence, 2.) Inspirational motivation, 3.) Intellectual stimulation, 4.) Individualized consideration. The Additive Effect of Transformational Leadership supports these four main factors Hall, Johnson, Wysocki and Kepner (2002, p. 2). It will very important to evaluate the four main factors and the government issue they can have when dealing with the topic of discussion which is the role of the principal in shaping school culture.