Information Sharing and the Stability of Cooperation in Research Joint Ventures.

The model studies information sharing and the stability of cooperation in cost reducing Research Joint Ventures (RJVs). In a four-stage game-theoretic framework, firms decide on participation in a RJV, information sharing, R&D expenditures, and output. An important feature of the model is that voluntary information sharing between cooperating firms increases information leakage from the RJV to outsiders. It is found that it is the spillover from the RJV to outsiders which determines the decision of insiders whether to share information, while it is the spillover affecting all firms which determines the level of information sharing within the RJV. RJVs representing a larger portion of firms in the industry are more likely to share information. It is also found that when sharing information is costless, firms never choose intermediate levels of information sharing : they share all the information or none at all. The size of the RJV is found to depend on three effects : a coordination effect, an information sharing effect, and a competition effect. Depending on the relative magnitudes of these effects, the size of the RJV may increase or decrease with spillovers. The effect of information sharing on the profitability of firms as well as on welfare is studied.

Polymer-Plastics Technology and Engineering

Fine (approximately 18 nm) particles of nickel ferrite were synthesized by the sol-gel technique, and their structural properties were evaluated by X-ray diffraction. Neoprene-based rubber ferrite composites were prepared by incorporating these nickel ferrite powders in the rubber matrix according to a specific recipe. The cure characteristics were analyzed, and the samples were molded into particular shapes whose properties were determined according to ASTM standards. Magnetization studies were carried out using a Vibrating Sample Magnetometer. This study indicates that neoprene rubber-based flexible magnets with desired magnetic properties and appropriate mechanical properties can be prepared by incorporating an adequate amount of nanoscale nickel ferrite particles within the rubber matrix

Information Exchange and Fusion in Dynamic and Heterogeneous Distributed Environments

Context awareness, dynamic reconfiguration at runtime and heterogeneity are key characteristics of future distributed systems, particularly in ubiquitous and mobile computing scenarios. The main contributions of this dissertation are theoretical as well as architectural concepts facilitating information exchange and fusion in heterogeneous and dynamic distributed environments. Our main focus is on bridging the heterogeneity issues and, at the same time, considering uncertain, imprecise and unreliable sensor information in information fusion and reasoning approaches. A domain ontology is used to establish a common vocabulary for the exchanged information. We thereby explicitly support different representations for the same kind of information and provide Inter-Representation Operations that convert between them. Special account is taken of the conversion of associated meta-data that express uncertainty and impreciseness. The Unscented Transformation, for example, is applied to propagate Gaussian normal distributions across highly non-linear Inter-Representation Operations. Uncertain sensor information is fused using the Dempster-Shafer Theory of Evidence as it allows explicit modelling of partial and complete ignorance. We also show how to incorporate the Dempster-Shafer Theory of Evidence into probabilistic reasoning schemes such as Hidden Markov Models in order to be able to consider the uncertainty of sensor information when deriving high-level information from low-level data. For all these concepts we provide architectural support as a guideline for developers of innovative information exchange and fusion infrastructures that are particularly targeted at heterogeneous dynamic environments. Two case studies serve as proof of concept. The first case study focuses on heterogeneous autonomous robots that have to spontaneously form a cooperative team in order to achieve a common goal. The second case study is concerned with an approach for user activity recognition which serves as baseline for a context-aware adaptive application. Both case studies demonstrate the viability and strengths of the proposed solution and emphasize that the Dempster-Shafer Theory of Evidence should be preferred to pure probability theory in applications involving non-linear Inter-Representation Operations.

Information Dissemination and Aggregation in Asset Markets with Simple Intelligent Traders

Various studies of asset markets have shown that traders are capable of learning and transmitting information through prices in many situations. In this paper we replace human traders with intelligent software agents in a series of simulated markets. Using these simple learning agents, we are able to replicate several features of the experiments with human subjects, regarding (1) dissemination of information from informed to uninformed traders, and (2) aggregation of information spread over different traders.

Research and Communication Skills

A Collection of Material for Research and Communication Skills

What’s the Difference between Web Technology and Web Science? Opportunities for study and research at the University of Southampton

The University of Southampton has a long history of pursuing research, development and social change with the Web This document guides you through the opportunities for Web-related study and research that we offer: an MSc in Web Technology; a 3-year PhD in Web Technology; an MSc in Web Science or a 4-year PhD in Web Science

COMP1205 Legal Perspectives: Information, Data and Living in a Connected World

List of topics and Slides which summarise legal perspectives with suggested methods on how to revise for the exam

Adopción de TIC como mecanismos facilitadores de la gestión organizacional

Los avances tecnológicos y la entrada a una nueva era digital son una realidad presente en todos los aspectos de la sociedad actual. El mundo organizacional se incluye en esta nueva era digital modernizando sus procesos y soportando sus actividades empresariales en tecnologías de la información y comunicaciones. La inclusión en la era digital por parte de las organizaciones es un paso importante que se debe dar para obtener los crecientes beneficios que la tecnología ofrece. Esta transformación organizacional hacia la implementación de herramientas TIC, como soporte del quehacer misional, debe darse bajo unos lineamientos de planeación estratégica e integración organizacional. Este estudio contiene una revisión conceptual con los lineamientos que una empresa debe tener en cuenta al momento de implementar herramientas TIC a sus áreas y actividades. Los hallazgos teóricos planteados son llevados a la realidad estudiando cómo empresas de Bogotá adoptan recursos tecnológicos. Los resultados principales del estudio muestran que la agrupación empresarial clasificada como gran empresa es el segmento que mejor aplica los lineamientos teóricos para la implementación correcta de herramientas TIC en un ambiente organizacional. El segmento de mediana y pequeña empresa da muestras de uso de herramientas TIC, sin embargo se nota una debilidad en la falta de planeación estratégica e integración de estos recursos tecnológicos al sistema organizacional. Esta investigación concluye mostrando un conjunto de recomendaciones y hallazgos de acuerdo a los datos analizados.