Trust is a judgement of unquestionable utility - as humans we use it every day of our lives. However, trust has suffered from an imperfect understanding, a plethora of definitions, and informal use in the literature and in everyday life. It is common to say "I trust you, " but what does that mean? This thesis provides a clarification of trust. We present a formalism for trust which provides us with a tool for precise discussion. The formalism is implementable: it can be embedded in an artificial agent, enabling the agent to make trust-based decisions. Its applicability in the domain of Distributed Artificial Intelligence (DAI) is raised. The thesis presents a testbed populated by simple trusting agents which substantiates the utility of the formalism. The formalism provides a step in the direction of a proper understanding and definition of human trust. A contribution of the thesis is its detailed exploration of the possibilities of future work in the area.

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This thesis illustrates a comprehensive study on the PVT, solubility and surface tension properties of polylactic acid (PLA) with dissolved CO2 based on thermodynamic models. The solubility of CO2 in PLA melt was calculated by means of a gravimetric method, using a Magnetic Suspension Balance (MSB). The swelling volume of the polymer/gas mixture due to dissolution of gas was compensated for by direct measurement through a view cell or by theoretical models such as Simha Somcynsky (SS) - Equation of State (EOS) and Sanchez Lacombe (SL) - Equation of State (EOS). Three grades of PLA (i.e., PLA3001D, PLA8051D, and PLA4060D) were chosen. It was observed that the pressure, temperature, D-content and Molecular weight variance had an effect on the swelling and solubility. The surface Tension of PLA/CO₂ mixture was also calculated from the captured image using the Axsymmetric Drop Shape Analysis (ADSA). The effects of varying the pressure, temperature, and molecular weight on surface tension were investigated.

In this study the effects of Sn content and isothermal transformation temperature on the ultimate tensile strength (UTS), elongation and hardness of austempered ductile cast iron (ADI) was investigated. To determine the possible effect of Sn on these properties the Sn content of standard GGG30, GGG40 and GGG50 materials were taken as reference, whose chemical compositions vary from 0,016 to 0,050% in terms of Sn. However the Sn content was increased to a maximum of 0,26% for investigating the effect of Sn on mechanical properties. The test specimens were obtained from standard 1-in Y-blocks and austenitized at 925oC for 1 hour and austempered at 350oC,375oC, 400oC and 420oC for 60 minutes in a salt bath. Microstructural examination of the specimens were also done. To determine the amount of retained austenite of the specimens X-Ray analyses were used. As a result of the study The UTS increases up to 0,1% Sn and then levels off. A similar behavior is observed in the variation of hardness. Percent elongation decreases and falls to a minimum around 0,1% Sn, from this point on, a slight increase is observed. Strength and hardness increase while percent elongation decreases with decreasing temperatures.

Graduation date: 1936

Hochwertige Schulungsmaterialien für die unternehmensinterne Weiterbildung sind ein erster wichtiger Schritt hin zu einem effektiven Wissensmanagement. Einmal erstellt, können digitale Lerninhalte immer wieder eingesetzt werden. Allerdings ist die Pflege und Anpassung an die Anforderungen verschiedener Zielgruppen und Auslieferungsformate mit herkömmlicher E-Learning-Autorensoftware sehr aufwändig. Nicht so bei serverbasierter Software – sie ermöglicht die Planung, Erstellung, Auslieferung, Verwaltung und Pflege wiederverwendbarer digitaler Lernmaterialien. Dies ist der Ausgangspunkt für eine Vielzahl individueller Weiterbildungsangebote – ohne erneuten Aufwand für die Erstellung der Lerninhalte.

Typescript. / Thesis--University of Hawaii, 1964. / Bibliography: leaves 105-113. / xi, 113 leaves mounted ill. (part col.) tables

Typescript. / Thesis (Ph. D.)--University of Hawaii, 1964. / Bibliography: leaves [83]-86. / viii, 86 l tables, 12 mounted graphs

Typescript. / Thesis (Ph. D.)--University of Hawaii, 1967. / Bibliography: leaves 124-137. / xiv, 159 l graphs, tables