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The purpose of this paper is to help high frequency circuit designers understand how to choose the best permittivity value for a laminate material for accurate modeling.

In this paper, experimental measurements of the performance of simple circuits are compared to various mathematical and software models.

Higher permittivity values were obtained using samples with bonded copper foil compared to samples etched free of foil. These higher values yielded better agreement between measured and modelled performance using current automated design software. High profile foil on thin laminates was found to increase the surface impedance of the conductor and change the propagation constant and apparent permittivity of the laminate by 15 percent or more. It was also demonstrated that, under some circumstances, the anisotropy of the substrate could result in differences in measured and modelled performance.

Only a limited number of circuit laminate materials were closely examined. Future work should include a wider variety of laminates.

The paper details the magnitude of the effects of test method, conductor profile and substrate anisotropy on the values of a material's permittivity best suited for circuit design purposes.

In a number of recent multi-billion dollar cases brought against cigarette manufacturers, plaintiffs have in part alleged that the cigarette manufacturers (1) conspired not to compete on the basis of health claims or the introduction of potentially safer cigarettes since the 1950s, and (2) engaged in fraudulent advertising by making implied health claims in advertisements selling ‘low tar’/‘light’ cigarettes. In this type of litigation, defendants’ actions could be due to alleged illegal behaviour as asserted by plaintiffs, or be the result of market forces that may have nothing to do with allegedly inappropriate acts. We examine the economic evidence relating to these allegations, taking into account some of the major influences on cigarette company behaviour. In particular, our analyses show that much of the cigarette manufactures’ behaviour can be explained by Federal Trade Commission and related government actions, rather than conspiracy or fraudulent acts. We find the economic evidence is inconsistent with an effective conspiracy to suppress information on either smoking and health or the development and marketing of potentially safer cigarettes. Regarding ‘lower tar’ and ‘light’ cigarettes, the economic evidence indicates that the cigarette manufacturers responded to government and public health initiatives, and that disclosing more information on smoking compensation earlier than the cigarette companies did would not have had any significant impact on smoking behaviour.

The Bureau of Economics in the Federal Trade Commission has a three-part role in the Agency and the strength of its functions changed over time depending on the preferences and ideology of the FTC’s leaders, developments in the field of economics, and the tenor of the times. The over-riding current role is to provide well considered, unbiased economic advice regarding antitrust and consumer protection law enforcement cases to the legal staff and the Commission. The second role, which long ago was primary, is to provide reports on investigations of various industries to the public and public officials. This role was more recently called research or “policy R&D”. A third role is to advocate for competition and markets both domestically and internationally. As a practical matter, the provision of economic advice to the FTC and to the legal staff has required that the economists wear “two hats,” helping the legal staff investigate cases and provide evidence to support law enforcement cases while also providing advice to the legal bureaus and to the Commission on which cases to pursue (thus providing “a second set of eyes” to evaluate cases). There is sometimes a tension in those functions because building a case is not the same as evaluating a case. Economists and the Bureau of Economics have provided such services to the FTC for over 100 years proving that a sub-organization can survive while playing roles that sometimes conflict. Such a life is not, however, always easy or fun.

Investigates the differences in protocols between arbitral tribunals and courts, with particular emphasis on US, Greek and English law. Gives examples of each country and its way of using the law in specific circumstances, and shows the variations therein. Sums up that arbitration is much the better way to gok as it avoids delays and expenses, plus the vexation/frustration of normal litigation. Concludes that the US and Greek constitutions and common law tradition in England appear to allow involved parties to choose their own judge, who can thus be an arbitrator. Discusses e‐commerce and speculates on this for the future.

Dewey, through his contributions to pragmatism (America’s sole original philosophy), has long been considered relative to symbolic interactionism (SI), which emerged from that philosophy. His impact on SI, while falling short of those of Mead and Cooley, has mainly come from (and has been limited to) concepts and insights developed in Human Nature and Conduct: An Introduction to Social Psychology (1922/1957) and his earlier, seminal, article, “The Reflex Arc Concept in Psychology,” published in 1896 during his tenure at the University of Chicago (1894–1904). SI, however, has wrongly ignored Dewey’s political theory, especially his concept of domination. In order to rectify this inattention, I summarize the social and historical contexts that motivated Dewey’s turn toward domination; outline the radical nature of his political theory; illustrate similarities of his political theory with Marx’s; expatiate on his concept of domination, including his argument for social practices to reduce surplus domination; and explicate the theoretical and political implications of taking his political theory seriously.

Effective discussion is inextricably linked to democracy. Social studies curriculum and instruction should engage students in practicing democratic skills and habits of mind. This case study provides a microanalysis of one U.S. History teacher’s commitment to fostering discussion in her classroom as a theorized pedagogical practice. A better understanding of what motivates teachers to engage students in classroom discussions paralleled with rich descriptions of how this teacher plans and implements discussion could encourage others to try this approach to teaching and learning.

The management of children′s literature is a search for value and suitability. Effective policies in library and educational work are based firmly on knowledge of materials, and on the bibliographical and critical frame within which the materials appear and might best be selected. Boundaries, like those between quality and popular books, and between children′s and adult materials, present important challenges for selection, and implicit in this process are professional acumen and judgement. Yet also there are attitudes and systems of values, which can powerfully influence selection on grounds of morality and good taste. To guard against undue subjectivity, the knowledge frame should acknowledge the relevance of social and experiential context for all reading materials, how readers think as well as how they read, and what explicit and implicit agendas the authors have. The good professional takes all these factors on board.