97 research outputs found
Alternately-twisted cube as an interconnection network.
by Wong Yiu Chung.Thesis (M.Phil.)--Chinese University of Hong Kong, 1991.Bibliography: leaves [100]-[101]AcknowledgementAbstractChapter 1. --- Introduction --- p.1-1Chapter 2. --- Alternately-Twisted Cube: Definition & Graph-Theoretic Properties --- p.2-1Chapter 2.1. --- Construction --- p.2-1Chapter 2.2. --- Topological Properties --- p.2-12Chapter 2.2.1. --- "Node Degree, Link Count & Diameter" --- p.2-12Chapter 2.2.2. --- Node Symmetry --- p.2-13Chapter 2.2.3. --- Sub cube Partitioning --- p.2-18Chapter 2.2.4. --- Distinct Paths --- p.2-23Chapter 2.2.5. --- Embedding other networks --- p.2-24Chapter 2.2.5.1. --- Rings --- p.2-25Chapter 2.2.5.2. --- Grids --- p.2-29Chapter 2.2.5.3. --- Binary Trees --- p.2-35Chapter 2.2.5.4. --- Hypercubes --- p.2-42Chapter 2.2.6. --- Summary of Comparison with the Hypercube --- p.2-44Chapter 3. --- Network Properties --- p.3-1Chapter 3.1. --- Routing Algorithms --- p.3-1Chapter 3.2. --- Message Transmission: Static Analysis --- p.3-5Chapter 3.3. --- Message Transmission: Dynamic Analysis --- p.3-13Chapter 3.4. --- Broadcasting --- p.3-17Chapter 4. --- Parallel Processing on the Alternately-Twisted Cube --- p.4-1Chapter 4.1. --- Ascend/Descend class algorithms --- p.4-1Chapter 4.2. --- Combining class algorithms --- p.4-7Chapter 4.3. --- Numerical algorithms --- p.4-8Chapter 5. --- "Summary, Comparison & Conclusion" --- p.5-1Chapter 5.1. --- Summary --- p.5-1Chapter 5.2. --- Comparison with other hypercube-like networks --- p.5-2Chapter 5.3. --- Conclusion --- p.5-7Chapter 5.4. --- Possible future research --- p.5-7Bibliograph
Interactive Technologies for the Public Sphere Toward a Theory of Critical Creative Technology
Digital media cultural practices continue to address the social, cultural and aesthetic
contexts of the global information economy, perhaps better called ecology, by inventing
new methods and genres that encourage interactive engagement, collaboration, exploration
and learning. The theoretical framework for creative critical technology evolved from the
confluence of the arts, human computer interaction, and critical theories of technology.
Molding this nascent theoretical framework from these seemingly disparate disciplines was
a reflexive process where the influence of each component on each other spiraled into the
theory and practice as illustrated through the Constructed Narratives project. Research
that evolves from an arts perspective encourages experimental processes of making as a
method for defining research principles. The traditional reductionist approach to research
requires that all confounding variables are eliminated or silenced using methods of
statistics. However, that noise in the data, those confounding variables provide the rich
context, media, and processes by which creative practices thrive. As research in the arts
gains recognition for its contributions of new knowledge, the traditional reductive practice
in search of general principles will be respectfully joined by methodologies for defining
living principles that celebrate and build from the confounding variables, the data noise.
The movement to develop research methodologies from the noisy edges of human
interaction have been explored in the research and practices of ludic design and ambiguity
(Gaver, 2003); affective gap (Sengers et al., 2005b; 2006); embodied interaction (Dourish,
2001); the felt life (McCarthy & Wright, 2004); and reflective HCI (Dourish, et al., 2004).
The theory of critical creative technology examines the relationships between critical
theories of technology, society and aesthetics, information technologies and contemporary
practices in interaction design and creative digital media. The theory of critical creative
technology is aligned with theories and practices in social navigation (Dourish, 1999) and
community-based interactive systems (Stathis, 1999) in the development of smart
appliances and network systems that support people in engaging in social activities,
promoting communication and enhancing the potential for learning in a community-based
environment. The theory of critical creative technology amends these community-based
and collaborative design theories by emphasizing methods to facilitate face-to-face
dialogical interaction when the exchange of ideas, observations, dreams, concerns, and
celebrations may be silenced by societal norms about how to engage others in public
spaces.
The Constructed Narratives project is an experiment in the design of a critical creative
technology that emphasizes the collaborative construction of new knowledge about one's
lived world through computer-supported collaborative play (CSCP). To construct is to
creatively invent one's world by engaging in creative decision-making, problem solving
and acts of negotiation. The metaphor of construction is used to demonstrate how a simple
artefact - a building block - can provide an interactive platform to support discourse
between collaborating participants. The technical goal for this project was the development
of a software and hardware platform for the design of critical creative technology
applications that can process a dynamic flow of logistical and profile data from multiple
users to be used in applications that facilitate dialogue between people in a real-time
playful interactive experience
Novel Insights into Orbital Angular Momentum Beams: From Fundamentals, Devices to Applications
It is well-known by now that the angular momentum carried by elementary particles can be categorized as spin angular momentum (SAM) and orbital angular momentum (OAM). In the early 1900s, Poynting recognized that a particle, such as a photon, can carry SAM, which has only two possible states, i.e., clockwise and anticlockwise circular polarization states. However, only fairly recently, in 1992, Allen et al. discovered that photons with helical phase fronts can carry OAM, which has infinite orthogonal states. In the past two decades, the OAM-carrying beam, due to its unique features, has gained increasing interest from many different research communities, including physics, chemistry, and engineering. Its twisted phase front and intensity distribution have enabled a variety of applications, such as micromanipulation, laser beam machining, nonlinear matter interactions, imaging, sensing, quantum cryptography and classical communications. This book aims to explore novel insights of OAM beams. It focuses on state-of-the-art advances in fundamental theories, devices and applications, as well as future perspectives of OAM beams
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