Information reuse in dynamic spectrum access

Dynamic spectrum access (DSA), where the permission to use slices of radio spectrum is dynamically shifted (in time an in different geographical areas) across various communications services and applications, has been an area of interest from technical and public policy perspectives over the last decade. The underlying belief is that this will increase spectrum utilization, especially since many spectrum bands are relatively unused, ultimately leading to the creation of new and innovative services that exploit the increase in spectrum availability. Determining whether a slice of spectrum, allocated or licensed to a primary user, is available for use by a secondary user at a certain time and in a certain geographic area is a challenging task. This requires 'context information' which is critical to the operation of DSA. Such context information can be obtained in several ways, with different costs, and different quality/usefulness of the information. In this paper, we describe the challenges in obtaining this context information, the potential for the integration of various sources of context information, and the potential for reuse of such information for related and unrelated purposes such as localization and enforcement of spectrum sharing. Since some of the infrastructure for obtaining finegrained context information is likely to be expensive, the reuse of this infrastructure/information and integration of information from less expensive sources are likely to be essential for the economical and technological viability of DSA. © 2013 IEEE

Spartan Daily, September 25, 1957

Volume 45, Issue 2https://scholarworks.sjsu.edu/spartandaily/12495/thumbnail.jp

Spartan Daily, November 2, 2016

Volume 147, Issue 27https://scholarworks.sjsu.edu/spartan_daily_2016/1067/thumbnail.jp

The interrupted world: Surrealist disruption and altered escapes from reality

Following Breton’s writings on surreality, we outline how unexpected challenges to consumers’ assumptive worlds have the potential to alter how their escape from reality is experienced. We introduce the concept of ‘surrealist disruption’ to describe ontological discontinuities that disrupt the common-sense frameworks normally used by consumers and that impact upon their ability to suspend their disbeliefs and experience self-loss. To facilitate our theorization, we draw upon interviews with consumers about their changing experiences as viewers of the realist political TV drama House of Cards against a backdrop of disruptive real-world political events. Our analyses reveal that, when faced with a radically altered external environment, escape from reality changes from a restorative, playful experience to an uneasy, earnest one characterized by hysteretic angst, intersubjective sense-making and epistemological community-building. This reconceptualizes escapism as more emotionally multivalenced than previously considered in marketing theory and reveals consumers’ subject position to an aggregative social fabric beyond their control

Spartan Daily, April 23, 1958

Volume 45, Issue 111https://scholarworks.sjsu.edu/spartandaily/12603/thumbnail.jp

Ion lasers-the early years

The paper is a personal, anecdotal history of the discovery and early development of ion lasers, particularly the argon ion laser. A brief discussion of the mechanisms that make this laser work, and the engineering challenges and developments that make it practical are included. Some early applications in night reconnaissance and imaging are include