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A Note About the Semantics of Delegation

In many applications, mobile agents are used by a client to delegate a task. This task is usually performed by the agent on behalf of the client, by visiting various service provider's sites distributed over a network. This use of mobile agents raises many interesting security issues concerned with the trust relationships established through delegation mechanisms between client and agent, agent and service provider and client and service provider. In this paper we will explain why the traditional semantics of delegation used by existing access control mechanisms, either centralised or distributed, are generally not satisfactory to prevent and detect deception and why these problems are even more critical when these semantics are used in mobile agent paradigms.Non peer reviewe

All Things Reconciled: A Dialogue with Science from a Reformed Perspective

In this essay, the author examines some of the troubled interactions between science and religion in the West, attributing part of the trouble to a reliance upon anthropomorphic models of God and to an illusion of human separateness from the rest of creation. Citing recent findings of biology, neuroscience, and cognitive science, he argues that the human species is religious by its very nature

Ms. Pacrat: A feeling, thinking machine

Since before the time of the first digital computers, the workings of the mind have been compared to that of a machine. With the onset of the discipline of Artificial Intelligence a truly organized attempt has been made to build intelligent machines that model the mind. Many interesting programs have been built, but the legitimacy of their success is a matter of great controversy. None of the AI programs developed so far have come close to the true power and intelligence of the brain. Expert systems, for example, are the most success ful commercial AI programs, and even they have shown to be brittle, and only able to deal with knowledge in very narrow domains. I suggest that those interested in modeling the mind should explore the emotions. I propose that intelligence and the emotions have a dependent and critical relationship. This relationship suggests that attempts to model human intelligence should consider how the emotions effect our thinking, reasoning, problem-solving, and learning and incorporate this information into computer models. This thesis will review what has been done in the field of AI to build intelligent machines and will examine the relationship between emotions and intelligence. A computer model of emotions will be presented: MS. PACRAT - A Feeling Thinking Machine

Artificial Intelligence Through the Eyes of the Public

Artificial Intelligence is becoming a popular field in computer science. In this report we explored its history, major accomplishments and the visions of its creators. We looked at how Artificial Intelligence experts influence reporting and engineered a survey to gauge public opinion. We also examined expert predictions concerning the future of the field as well as media coverage of its recent accomplishments. These results were then used to explore the links between expert opinion, public opinion and media coverage

Examining the Society of Mind

This article examines Marvin Minsky's Society of Mind theory of human cognition. We describe some of the history behind the theory, review several of the specific mechanisms and representations that Minsky proposes, and consider related developments in artificial intelligence since the theory's publication

Telepresence: Joan Jonas and the Emergence of Performance and Video Art in the 1970s

This dissertation is a study of the early career of the American artist Joan Jonas that spans the years 1970-1984. At the turn of the 1970s, Jonas was one of the first artists to pick up a video camera. Exploring “live” video’s unique capacity to mediate the present moment, Jonas actively integrated the technology into her live pieces, which are some of the earliest examples of what was then first called “performance art.” Performance art has often been aligned with presence. In contrast, I argue that what at stake in the proliferation of live artworks by Jonas and others that merged performance and video was not a reserve of unmediated experience, but a presence that was newly technologized: telepresence. As Jonas investigated the novel ability to perform at a distance enabled by electronic media, her work led somewhere surprising: to telegraphy, telepathy, and the earliest telephones—“tele”-technologies that appear long obsolete (or completely fantastical). Evoking optical telegraphs, spirit mediums, speaking trumpets, and science fictional prostheses, Jonas’s early oeuvre reactivates the historical contexts and unrealized potentials surrounding these dead media. In so doing, she illuminates enduring formations of the body, subjectivity, and teletechnology underlying not only the twinned emergence of performance and video art in the 1970s, but also telepresence as a seemingly very contemporary (and increasingly pervasive) category of experience