Search results

The growing dependence of modern society on telecommunication and information networks and e‐type systems has become inevitable. However, those types of systems are vulnerable to malicious attacks. The speed and automation in network attack techniques continue to increase. An achievable automated attack or unauthorised access to a particular organization network could lead to devastating effects on its reputation and imminent loss of life. In this paper an innovative way is proposed to detect network attacks of a distributed nature such as denial of service (DoS) attacks. The proposed scheme is mainly based on neuro‐fuzzy intelligence in order to learn and determine the fuzzy parameter functions that represent network traffic behaviour. Neuro‐fuzzy agents combine the features of fuzzy logic and neural networks and they have been proposed to overcome the limitations of human expertise in defining fuzzy membership functions, especially for complex environments, such as information networks.

In today’s society, information and communications technology (ICT) is the force that drives prosperity and provides a higher standard of living. All other e‐services and infrastructures tend to play a major role in our daily life and global economy. The growing dependence on such systems, however, has increased their vulnerability to cyber attacks. Any failure to these systems typically would lead to a huge impact, not only on businesses, but also human life, that depends on such interconnected systems. The growing potential for telecommunications network infrastructures problems stems from their nature of openness. A successful attempt for a network attack to a particular organization’s network could have devastating effects on the security of the organisation. In this paper we propose an innovative way to counteract distributed protocols attacks such as distributed denial of service (DDoS) attacks using intelligent fuzzy agents.

In the wake of numerous late twentieth century cult disasters, and most recently, the September 11 tragedy, this paper considers the question, why do people obey outrageous commands from charismatic authorities? According to Gary Becker, “the economic ap‐proach provides a valuable unified framework for understanding all human behavior” (Becker 1976:14). We test this generalization by attempting to explain, in terms of rational choice theory, the behavior of two members of infamous cults, the Manson Family and the Ragneesh Foundation International. Each of these subjects slavishly obeyed orders from a charismatic personality, one to the extent of committing murder. Were they mentally ill or rationally maximizing their utility? We consider these theoretical options. In August of 1969 Charles Manson ordered several of his followers to commit gruesome murders for the purpose of initiating the apocalypse. They obeyed. In late 1978, Jim Jones commanded over 900 members of the Peoples Temple to commit suicide. They obeyed. From 1981 to 1985, executing orders to build utopia perceived to come from their guru, members of the Ragneesh Foundation International terrorized the inhabitants of Antelope, Oregon. Similarly, followers of Osama Bin Laden are suspected of carrying out the disastrous suicide murders of September 11. Over past decades, the incidence of violence involving submission to a charismatic leader appears to be escalating. Increasingly the public must contend with the “awesome power” of charisma, “enshrouded in a mystique of irrationality” (Bradley 1987: 3–4). The extent to which followers committing criminal acts of obedience may be held accountable has become a pressing legal issue. How can this kind of volatile religious commitment be explained? In recent years, experts on cults have experimented with rational choice theory. According to economist, Gary Becker, “the economic approach provides a valuable unified framework for understanding all human behavior” (Becker 1976: 14). We test this extravagant claim with two cases of seemingly irrational commitment to a charismatic cult leader—one a follower of Bhagwan Rajneesh, the other a Manson Family killer. These subjects are not representative cult members but rather were chosen because they demonstrated an exceptional loyalty to their leaders that has been widely construed as the result of brainwashing or insanity. Rather than survey data, we rely on autobiographical testimonies since they offer a more detailed and comprehensive view of the thought processes that motivate behavior, the subject matter of this paper.

The mid-1990s marked a paradigm shift in the way physical activity is promoted, and walking is now considered the most suitable type of physical activity for widespread promotion. Accurate measurement underpins public health practice, hence the aims of this chapter are to: (1) provide a typology for the measurement of walking; (2) review methods to assess walking; (3) present challenges in defining walking measures; (4) identify issues in selecting instruments for the evaluation of walking and (5) discuss current efforts to overcome measurement challenges and methodological limitations. The taxonomy of walking indicates that secondary purpose walking is a more complex set of behaviours than primary purpose walks. It has many purposes and no specific domain or intensity, may lack regularity, and therefore poses greater measurement challenges. Objective measurement methods, such as accelerometers, pedometers, smartphones and other electronic devices, have shown good approximation for walking energy expenditure, but are indirect methods of walking assessment. Global Positioning System technology, the ‘Smartmat’ and radio-frequency identification tags are potential objective methods that can distinguish walkers, but also require complex analysis, are costly, and still need their measurement properties corroborated. Subjective direct methods, such as questionnaires, diaries and direct observation, provide the richest information on walking, especially short-term diaries, such as trip records and time use records, and are particularly useful for assessing secondary purpose walking. A unifying measure for health research, surveillance and health promotion would strongly advance the understanding of the impact of walking on health.

This chapter investigates the relationship between related party transactions (RPTs), corporate governance, and firm performance. Specifically, this chapters examines the moderating effect of corporate governance on the RPTs–performance relationship. On the basis of 448 firm-year sample for 2005–2007, we find evidence that related transactions are detrimental to shareholders and thus reducing firm performance. However, the negative effect is mitigated with the presence of good governance, namely level of board independence and executive remuneration. Furthermore, we find auditor size as an external governance mechanism could also reduce the negative impact of RPTs.

Prosecutions under Criminal Law, associated in the minds of most people with “criminal offences” of a serious nature—“crime” in the traditional sense—and undertaken by the police authorities, constitute a very large and rather untidy body of public law. It includes a large and constantly growing number of offences in respect of which prosecutions are undertaken by various corporate bodies who, as in the case of local authorities, have a duty albeit with a power of discretion, to prosecute. There would appear to be little in common between such offences, as smoking in the presence of open food or failing to provide soap, nail‐brushes, etc, for food handlers, and the villainy and violence of the criminal, but their misdeeds are all criminal offences and subject to the same law. Other countries, such as France, have definite Criminal Codes and these offences against statutes and statutory instruments which in English Law are dealt with in the broad field of Criminal Law, are subject to special administrative procedure. It has obvious advantages. Although in England and Wales, prosecutions are undertaken by police authorities, local authorities, public corporations, even professional bodies and private individuals, with a few statutory exceptions for which the Attorney‐General's fiat or consent of the Director of Public Prosecutions is necessary, may instigate a prosecution against anyone if he can provide prima facie evidence to support it. In Scotland, prosecutions are instituted at the instigation of the various authorities by an officer, the Procurator‐Fiscal. Many advocate such a system for England and Wales, despite the enormous difference in the volume of litigation. Supervision of prosecutions on a much smaller scale is by the Director of Public Prosecutions, an office created in 1879, with power to institute and carry on criminal proceedings—this is the less significant of his duties, the number of such prosecutions usually being only several thousands per year—the most important being to advise and assist chief officers of police, clerks to the magistrates and any others concerned with criminal proceedings Regulations govern the cases in which DPP may act, mainly cases of public interest. The enormous growth of summary jurisdiction over the years, especially that arising from so‐called secondary legislation, is largely outside his sphere.

Additive manufacturing (AM) studies on Inconel 718 (IN718) have focused on exploring its tensile and fatigue response. As IN718 is used in the propulsion and energy sector, the impact of shearing is also critical to ensuring the durability of these components. As such, this study aims to explore the relation between build orientation on the shear cyclic response of direct metal laser sintered (DMLS) IN718.

IN718 torsion specimens were manufactured along six build orientations: (100)-X, (010)-Y, (001)-Z, (110)-XY45, (101)-XZ45 and (011)-YZ45, using the DMLS process. Torsional fatigue testing was performed on as-built specimens, from which fracture behavior, surface roughness, softening/hardening response and monotonic/cyclic shear torsional properties were assessed.

DMLS IN718 was found to exhibit transversely isotropic behavior. In terms of shear stress range and shear modulus, Z > (X, XY45, Y) > (XZ45, YZ45). Specimens cyclically hardened to stabilization and softened to fracture. In terms of torsional fatigue fracture response, the Z, XZ45 and YZ45 specimens exhibited crack initiation and propagation from internal defects, whereas cracks were found to initiate at the surface and propagate between and through build layers for the X, Y and XY45 specimens.

This study reports the torsional cyclic response and shear moduli exhibited by as-built DMLS IN718 manufactured along varying build orientations. The findings are applicable for researchers because of the wide use of IN718 in the gas turbine industry, and the current trend to replace conventional manufacturing with AM.

In this chapter, I use the term “biopolitics” to mean evolutionarily informed political science. Politics has been characterized as “Who gets what, when, and how” (Lasswell, 1936), but rather than about material possessions, politics is understood to be about power, more specifically about collective power, especially differential group power competition, hierarchy and stratification in power distribution, and the universal struggle to enhance power, and to maintain or challenge/destroy this status quo. Politics “should be found in any system of nature in which conflicts of interest exist among cooperating organic units” (Johnson, 1995, p. 279). My main focus will be competitive intergroup relations in monkeys and apes, or as I (van der Dennen, 1995) called it “intergroup agonistic behavior” (IAB). I also briefly treat interindividual and intercoalitionary agonistic behavior when relevant.