7075592
Automatic diagnostic program generation for mixed signal load board
Kranthi K. Pinjala, Bruce C. Kim, Pramod Variyam" Department of Electrical Engineering Arizona State University Tempe, AZ 85287-5706 * Texas Instruments, Inc. several active and passive components on them and are very complex. This paper describes a method for automatically 2. Simpler mixed-signal devices are quite often tested in generating diagnostic programs for mixed-signal load a multi-site environment where more than one device boards. This procedure employs a statistical method of under test (DUT) are loaded on to the load board and computing Mahalanobis Distance to find defects in load are tested in parallel. Multi-site testing with 16 board traces and components devices in parallel is quite common these days. Complexity of load boards increases tremendously in
29771764
Low-cost diagnosis of defects in MCM substrate interconnections
Consistent with industry needs for low-cost MCM substrate test methods, we have earlier developed a single-probe technique for detecting near-opens and near-shorts in substrate interconnects. In this paper we show how a fault-dictionary can be used to accurately determine defect location, size, etc. Such information may be used to perform repair of MCM substrates.
45107585
DC Built-In Self-Test for Linear Analog Circuits
DC testing of analog circuits is cheaper than AC testing and covers many fault classes, including some that AC tests cannot detect. This efficient, low-cost, built-in self-test (BIST) methodology uses the checksum encodings of matrix representations to uncover faults that affect a circuit's DC transfer function.
2141308
Integrating wireless LAN and cellular data for the enterprise
The Internet Roaming solution for corporate wireless data users integrates mobile networking across private WLANs, public WLANs, and cellular data networks.
5682535
Power-Efficient Packet Scheduling Method for IEEE 802.15.3 WPAN
Power efficiency is the key issue for mobile devices, which mainly rely on limited battery power. The IEEE 802.15.3 wireless personal area network (WPAN) standard adopts a time division multiple access (TDMA) protocol controlled by a central device to support isochronous traffics. In the TDMA-based wireless packet networks, the packet scheduling algorithm plays a key role in power efficiency. However, the standard suffers from long access delay and association delay which increase the power consumption. In this paper, we propose a packet scheduling method to improve the power efficiency. Performance evaluations are carried out through simulations and significant performance enhancements are observed. Furthermore, the performance of the proposed scheme remains stable regardless of the variable system parameters such as the number of devices and superframe size.
46262550
Resource Allocation Based on Traffic Load over Relayed Wireless Access Networks
In this paper, we develop a traffic load-based resource allocation scheme, called LOAD, to enhance the capacity of relayed wireless access networks for asymmetric traffic load such as transmission control protocol (TCP). In order to estimate the current traffic load status in relayed wireless access networks, we propose a load estimation method. A relay gateway estimates the current traffic load status by keeping track of the sizes of the frames it encounters, and computes accordingly the current traffic load of the uplink and the downlink. The results are then used to allocate the system resource between the uplink and the downlink. The proposed method can be implemented without the modification of the deployed IEEE 802.11 nodes. 
 
We analyze the throughput ratio between the uplink and the downlink, and validate the analysis result with a comprehensive simulation study. The simulation results indicate that the utilization of the proposed method is better than that of IEEE 802.11 Distributed Coordination Function (DCF).
32825020
An exploratory inquiry into the perceived effectiveness of a global information system
As globalization has driven and has also been driven by innovation in information technology (IT), an effective utilization of IT has become critical in improving global operations. In this paper, we report an exploratory inquiry into what factors influence the effectiveness of IT on coordinating international operations as perceived by managers at global firms. As an initial study, our research focuses on a specific set of variables which we propose are fundamental elements for determining the IT effectiveness in the global context, i.e. firm’s globalization level, IT application, and IT department dedication. We put forth two propositions: first, a global firm can enhance its IT effectiveness by advancing the IT application level; second, as its globalization level expands, the global firm must put in place a comparable amount of organizational support (measured by IT department dedication) for the global IT system if it wants to heighten IT performance by raising the IT application level. In order to verify the propositions, we collected survey data from 35 Korean firms, each of which operates on a global scale, doing operations in foreign countries through subsidiaries. Our analysis result led us to reach conclusions upholding the propositions.
5212035
Twister: a space-warp operator for the two-handed editing of 3D shapes
A free-form deformation that warps a surface or solid may be specified in terms of one or several point-displacement constraints that must be interpolated by the deformation. The Twister approach introduced here, adds the capability to impose an orientation change, adding three rotational constraints, at each displaced point. Furthermore, it solves for a space warp that simultaneously interpolates two sets of such displacement and orientation constraints. With a 6 DoF magnetic tracker in each hand, the user may grab two points on or near the surface of an object and simultaneously drag them to new locations while rotating the trackers to tilt, bend, or twist the shape near the displaced points. Using a new formalism based on a weighted average of screw displacements, Twister computes in realtime a smooth deformation, whose effect decays with distance from the grabbed points, simultaneously interpolating the 12 constraints. It is continuously applied to the shape, providing realtime graphic feedback. The two-hand interface and the resulting deformation are intuitive and hence offer an effective direct manipulation tool for creating or modifying 3D shapes.