Analytic model for turn off in the silicon-on-insulator LIGBT

Lateral insulated gate bipolar transistors (LIGBTs) in silicon-on-insulator (SOI) show a unique turn off characteristic when compared to junction-isolated RESURF LIGBTs or vertical IGBTs. The turn off characteristic shows an extended `terrace' where, after the initial fast transient characteristic of IGBTs due to the loss of the electron current, the current stays almost at the same value for an extended period of time, before suddenly dropping to zero. In this paper, we show that this terrace arises because there is a value of LIGBT current during switch off where the rate of expansion of the depletion region with respect to the anode current is infinite. Once this level of anode current is approached, the depletion region starts to expand very rapidly, and is only stopped when it reaches the n-type buffer layer surrounding the anode. Once this happens, the current rapidly drops to zero. A quasi-static analytic model is derived to explain this behaviour. The analytically modelled turn off characteristic agrees well with that found by numerical simulation.

The Place of Philosophy in Management

Our purpose is to not to define a particular philosophy of management, but rather to demonstrate some of the ways in which philosophy – ethics, metaphysics, epistemology, logic and æsthetics – contributes to the practice of management. We identify a number of contemporary management questions, procedures or issues where the application of philosophical approaches are relevant, and show how philosophical skills, an understanding of philosophical principles or exposure to philosophical discussion can contribute to improved management practice. In some ways the paper is a report on progress in the quest begun by Nigel Laurie and Christopher Cherry in the first issue of Philosophy of Management, formerly Reason in Practice (2001) when they asked why philosophers have interested themselves so little in the entire field of management. We include some examples where philosophers have written about management, some where managers have shown the direct impact of philosophy on management effectiveness and some where potential remains. In much we see links to process philosophy, and to the need for conversation and reflection by and between managers and philosophers. This does not of itself show how philosophy can contribute to management education. A brief final section discusses the way in which moral creativity skills can be developed through reflection, and describes how this has been done in the Manufacturing Leaders’ Programme at the Institute for Manufacturing at Cambridge and in the International Management Ethics & Values course taught to undergraduate management students in Adelaide, Singapore and Hong Kong. This will be taken up in a subsequent paper.

Passive control of combustion instability in a low emissions aeroderivative gas turbine

This paper describes the conceptual ideas, the theoretical validation, the laboratory testing and the field trials of a recently patented fuel-air mixing device for use in high-pressure ratio, low emissions, gaseous-fueled gas turbines. By making the fuel-air mixing process insensitive to pressure fluctuations in the combustion chamber, it is possible to avoid the common problem of positive feedback between mixture strength and the unsteady combustion process. More specifically, a mixing duct has been designed such that fuel-air ratio fluctuations over a wide range of frequencies can be damped out by passive design means. By scaling the design in such a way that the range of damped frequencies covers the frequency spectrum of the acoustic modes in the combustor, the instability mechanism can be removed. After systematic development, this design philosophy was successfully applied to a 35:1 pressure ratio aeroderivative gas turbine yielding very low noise levels and very competitive NOx and CO measurements. The development of the new premixer is described from conceptual origins through analytic and CFD evaluation to laboratory testing and final field trials. Also included in this paper are comments about the practical issues of mixing, flashback resistance and autoignition.

Unified analytic model for current-voltage behavior in amorphous oxide semiconductor TFTs

We present a simple and semi-physical analytical description of the current-voltage characteristics of amorphous oxide semiconductor thin-film transistors in the above-threshold and sub-threshold regions. Both regions are described by single unified expression that employs the same set of model parameter values directly extracted from measured terminal characteristics. The model accurately reproduces measured characteristics of amorphous semiconductor thin film transistors in general, yielding a scatter of < 4%. © 1980-2012 IEEE.

Analytic expressions for alpha particle preformation in heavy nuclei

Experimental alpha decay energies and half-lives are investigated systematically to extract alpha particle preformation in heavy nuclei. Formulas for the preformation factors are proposed that can be used to guide microscopic studies on preformation factors and perform accurate calculations of the alpha decay half-lives. There is little evidence for the existence of an island of long stability of superheavy nuclei.

An application of the analytic hierarchy process and fuzzy logic inference in a decision support system for forage selection

Forage selection plays a prominent role in the process of returning cultivated lands back into grasslands. The conventional method of selecting forage species can only provide attempts for problem-solving without considering the relationships among the decision factors globally. Therefore, this study is dedicated to developing a decision support system to help farmers correctly select suitable forage species for the target sites. After collecting data through a field study, we developed this decision support system. It consists of three steps: (1) the analytic hierarchy process (AHP), (2) weights determination, and (3) decision making. In the first step, six factors influencing forage growth were selected by reviewing the related references and by interviewing experts. Then a fuzzy matrix was devised to determine the weight of each factor in the second step. Finally, a gradual alternative decision support system was created to help farmers choose suitable forage species for their lands in the third step. The results showed that the AHP and fuzzy logic are useful for forage selection decision making, and the proposed system can provide accurate results in a certain area (Gansu Province) of China.

Syntax-Based Analytic Reading of Musical Scores

As part of a larger research project in musical structure, a program has been written which "reads" scores encoded in an input language isomorphic to music notation. The program is believed to be the first of its kind. From a small number of parsing rules the program derives complex configurations, each of which is associated with a set of reference points in a numerical representation of a time-continuum. The logical structure of the program is such that all and only the defined classes of events are represented in the output. Because the basis of the program is syntactic (in the sense that parsing operations are performed on formal structures in the input string), many extensions and refinements can be made without excessive difficulty. The program can be applied to any music which can be represented in the input language. At present, however, it constitutes the first stage in the development of a set of analytic tools for the study of so-called atonal music, the revolutionary and little understood music which has exerted a decisive influence upon contemporary practice of the art. The program and the approach to automatic data-structuring may be of interest to linguists and scholars in other fields concerned with basic studies of complex structures produced by human beings.

Wendt, IR and Philosophy: A Critique

Suganami, Hidemi, 'Wendt, IR and Philosophy: A Critique', In: 'Constructivism and International Relations: Alexander Wendt and His Critics', (New York: Routledge), pp.57-72, 2006 RAE2008

Ludwig Feuerbach's Critique of Religion and the End of Moral Philosophy

Williams, H. (2006). Ludwig Feuerbach's Critique of Religion and the End of Moral Philosophy. In Moggach, D. (Ed.), The New Hegelians: Politics and Philosophy in the Hegelian School (pp.50-66). Cambridge: Cambridge University Press. Introduction; Part I. Eduard Gans: 1. Eduard Gans on poverty and on the constitutional debate; 2. Ludwig Feuerbach's Critique of Religion and the end of moral philosophy; Part II. Ludwig Feuerbach: 3. The symbolic dimension and the politics of Left Hegelianism; Part III. Bruno Bauer: 4. Exclusiveness and political universalism in Bruno Bauer; 5. Republican rigorism and emancipation in Bruno Bauer; Part IV. Edgar Bauer: 6. Edgar Bauer and The Origins of the Theory of Terrorism; Max Stirner 7. Ein Menschenleben: Hegel and Stirner; 8. 'The State and I': Max Stirner's anarchism; Friedrich Engels: 9. Engels and the invention of the catastrophist conception of the industrial revolution; Karl Marx: 10. The basis of the state in the Marx of 1842; 11. Marx and Feuerbachian essence: returning to the question of 'Human Essence' in historical materialism; 12. Freedom and the 'Realm of Necessity'; Concluding with Hegel :13. Work, language and community: a response to Hegel's critics. RAE2008

A Christian analytic approach of marriage through abduction among the Basotho people of Lesotho: A challenge for pastoral care ministry

University of Pretoria / MA Dissertation / Department of Practical Theology / Advised by Prof M J S Masango

"A Good Reder": the middle English Wise Book of Philosophy and Astronomy, instruction, publics, and manuscripts

The present work is a study of the Middle English prose text known as The Wise Book of Philosophy and Astronomy, a consideration of its transmission and reception history, and a survey of its manuscript witnesses; it also incorporates an edition of the text from two of its manuscripts. The text is a cosmological treatise of approximately five thousand words, written for the most part in English, with astronomical and astrological terms in Latin, though the English translation is frequently given. It is written anonymously, and survives in thirty-three manuscripts.

Max Stirner's relevance to contemporary philosophy: a critical analysis

The aim of this dissertation is to revive the 19th-century thinker Max Stirner’s thought through a critical reexamination of his mistaken legacy as a ‘political’ thinker. The reading of Stirner that I present is one of an ontological thinker, spurred on as much—if not more—by the contents of Hegel’s Phenomenology of Spirit as it is the radical roots that Hegel unintentionally planted. In the first chapter, the role of language in Stirner’s thought is examined, and the problems to which his conception of language seem to give rise are addressed. The second chapter looks at Stirner’s purportedly ‘anarchistic’ politics and finds the ‘anarchist’ reading of Stirner misguided. Rather than being a ‘political’ anarchist, it is argued that we ought to understand Stirner as advocating a sort of ‘ontological’ anarchism in which the very existence of authority is questioned. In the third chapter, I look at the political ramifications of Stirner’s ontology as well as the critique of liberalism contained within it, and argue that the politics implicit in his philosophy shares more in common with the tradition of political realism than it does anarchism. The fourth chapter is dedicated to an examination of Stirner’s anti-humanism, which is concluded to be much different than the ‘anti-humanisms’ associated with other, more famous thinkers, such as Foucault and Heidegger. In the fifth and final chapter, I provide an answer to the question(s) of how, if, and to what extent Friedrich Nietzsche was influenced by Stirner. It is concluded that the complete lack of evidence that Nietzsche ever read Stirner is proof enough to dismiss accusations of plagiarism on Nietzsche’s part, thus emphasizing the originality and singularity of both thinkers.