University of Texas at Austin

Latest Content From University of Texas at Austin

Whitepaper: The Spyware Epidemic: Opting Into Effective Enforcement

by University of Texas at AustinJan 01, 2008

At both the state and federal levels, legislatures are introducing statutory solutions to combat the proliferation of spyware. The irony of these efforts, and of Chairman Barton’s quote, is that it is already a federal crime to put software on someone’s computer without their permission, and the prevailing statutes are explicit. By evaluating the statutory tools already available to federal authorities to prosecute spyware operators, this paper demonstrates that proposed legislation is largely unnecessary. Additionally, the paper discusses the current status of enforcement in relation to theoretical paradigms of regulation.

Whitepaper: Site Specific Knowledge for Improving Frequency Allocations in Wireless LAN and Cellular Networks

by University of Texas at AustinJan 01, 2008

This research paper is the first analytical work to exhibit the substantial gains that result from applying site specific knowledge to frequency allocation in wireless networks. Two site-specific knowledge-based frequency allocation algorithms are introduced, and are shown to outperform all other published work. Site specific knowledge refers to the use of knowledge of the surrounding propagation environment, building layouts, the locations of APs and users, and the locations and electrical properties of physical objects.

Whitepaper: The Ford Career Center Code Of Ethics

by University of Texas at AustinJan 01, 2008

The Ford Career Center (FCC) Code of Ethics provides a framework for the professional relationships among the FCC staff, employers and McCombs students. This paper from University of Texas at Austin is reviewed annually by the students, staff and Associate Deans for the BBA, MPA/PPA and MBA programs. Students are asked annually, at the beginning of the semester, to review the FCC Code of Ethics, seek clarification and then sign to acknowledge that they have read and understood the policies and agree to abide by the same.

Whitepaper: A Local Data Abstraction and Communication Paradigm for Pervasive Computing

by University of Texas at AustinJan 01, 2008

Sensor networks, consisting of numerous miniature, battery-powered devices that communicate wirelessly to gather and share information, have emerged as an integral component of pervasive computing environments. This research paper introduces the scene abstraction and a network protocol that provides the abstraction for developers of pervasive computing applications. The scene abstraction allows an application’s operating environment to include a dynamic set of devices embedded in the environment. As the device on which the application is running moves, the scene automatically updates to reflect changing conditions, thereby enabling access to local data.

Whitepaper: Traffic-Aware Channel Assignment in Wireless LANs

by University of Texas at AustinJan 01, 2008

This research paper discusses how campus and enterprise wireless networks are increasingly characterized by ubiquitous coverage and rising traffic demands. Efficiently assigning channels to Access Points (APs) in these networks can significantly affect the performance and capacity of the wireless LAN. Several research studies have tackled this issue. However, even the state-of-the-art approaches assign channels without considering prevailing traffic demands. The channel assignment problem has a parallel in the wire-line world, where recent work has established the tremendous effectiveness of using traffic demands in network engineering decisions.

Whitepaper: Avenue to VB: Migrating a Geological Database to ArcGIS

by University of Texas at AustinJan 01, 2008

Gulf Basin Depositional Synthesis Project (GBDS) began in 1995, and created a GIS database in ArcInfo coverage format. The GDBS provide a comprehensive synthesis and interpretation of basin scale sedimentation patterns and history as a tool for oil and gas exploration in the Gulf of Mexico. This paper describes insights gained through code migration from Avenue to Visual Basic for the GDBS project. It also addresses those challenges and presents insights gained from implementing solutions to those challenges. The GBDS database is driven by onshore and offshore well data along the margin of the Gulf of Mexico.

Whitepaper: Strategic Outsourcing For Competing OEMs That Face Cost Reduction Opportunities

by University of Texas at AustinJan 01, 2008

This paper highlights production and outsourcing decisions for two original equipment manufacturers (OEM) that produce partially substitutable products and have opportunities to invest in reducing the manufacturing cost. Competition drives both OEMs to set lower prices and invest more than would maximize their combined profits, particularly when product substitutability is high. However, outsourcing provides a mechanism by which the two OEMs can credibly signal that they will not over-invest in cost reduction, mitigating a mutually destructive cost competition.

Whitepaper: Improving Performance of Wireless Ad Hoc Networks Using a Few Point-to-Point Links

by University of Texas at AustinJan 01, 2008

This paper, investigate the benefits of adding a few infrastructure nodes to an otherwise ad hoc network. These infrastructure nodes are interconnected among themselves with point-to-point (p2p) links in addition to Wi-Fi capability. The publisher simulated small ad hoc and mixed networks with 50 mobile nodes and 9 fixed nodes with 12 wired links among them in a 1:5 � 1:5 Km2 field. The current wireless technologies such as IEEE 802.11 (Wi-Fi) make ad hoc networking viable for small regions involving a few tens of mobile nodes, but such networks are unreliable.

Whitepaper: Spherical Linear Interpolation for Transmit Beamforming in MIMO-OFDM Systems With Limited Feedback

by University of Texas at AustinJan 01, 2008

In this white paper published by University of Texas they propose to exploit channel coherence to send back only a fraction of the beamforming vectors. The coherence of the transmit beamforming vectors is established. A new spherical interpolator, with an additional parameter for phase rotation, is proposed to fill in the gaps between known vectors. The parameters of the interpolator are optimized in the sense of maximizing mutual information and are sent back to the transmitter along with the beamforming vectors through the feedback channel.