Digital Commons Network^™

Cooperative Forest Fire Surveillance Using A Team Of Small Unmanned Air Vehicles, Randal Beard, David Casbeer, Derek Kingston, Timothy W. Mclain, Sai-Ming Li, Raman Mehra

Faculty Publications

This research was supported by NASA under STTR contract No. NNA04AA19C to Scientific Systems Company, Inc (SSCI) and Brigham Young University (BYU), and by AFOSR grants F49620-01-1-0091 and F49620-02-C- 0094. The objective of this paper is to explore the feasibility of using multiple low-altitude, short endurance (LASE) unmanned air vehicles (UAVs) to cooperatively monitor and track the propagation of large forest fires. A real-time algorithm for tracking the perimeter of a fire with an on-board infrared sensor is developed. Using this algorithm, we develop a decentralized multiple-UAV approach to monitoring the perimeter of the fire. The UAVs are assumed to …

Social In Social Entrepreneurship: Altruism And Entrepreneurship, Partners In Social Entrepreneurship, Wee Liang Tan, John Joseph Williams, Teck Meng Tan

Research Collection Lee Kong Chian School Of Business

No abstract provided.

Parenting And Peer-Group Behavior In Cultural Context, David A. Nelson, Larry J. Nelson, Criag H. Hart, Chongming Yang, Shenghua Jin

Faculty Publications

Whether specific patterns of parenting are similarly associated with child peer group behavior in diverse cultural contexts has been a fascinating topic of inquiry. From classic anthropological studies dating back to the early twentieth century to the current interest in cross-cultural studies, knowledge concerning the question of universality and cultural variation in parenting linkages to childhood adjustment has expanded at an unprecedented rate (e.g., Harkness & Super, 2002). As the general field of parenting research has uncovered distinctions in parenting styles and practices (e.g., Darling & Steinberg, 1993; hart, Newell, & Olsen, 2003), these concepts have increasingly been applied to …

Providing A "Good Death": Critical Care Nurses' Suggestions For Improving End-Of-Life Care, Renea L. Beckstrand, Lynn Clark Callister, Karin T. Kirchhoff

Faculty Publications

• Background Providing appropriate end-of-life care has become a primary concern of nurses and the public. The highly technological critical care environment may not facilitate such care.
• Objective To collect suggestions from critical care nurses for improving end-of-life care in intensive care units.
• Methods A geographically dispersed, random sample of 1409 members of the American Association of Critical-Care Nurses was sent a 72-item survey on perceptions of end-of life care. The survey included a request for suggestions on ways to improve end-of life care.
• Results Of the 861 critical care nurses whoo responded to the survey, 485 offered 530 suggestions for …

Monolithic Integration Of Collimating Fresnel Lens For Beam Quality Enhancement In Tapered High Power Laser Diode, F. K. Lau, Chyng Wen Tee, X. Zhao, K. A. Williams, R. V. Penty, I. H. White, M. Calligaro, M. Lecomte, O. Parillaud, N. Michel, M. Krakowski

Research Collection Lee Kong Chian School Of Business

We demonstrate, for the first time, a monolithic integrated lens for wide aperture gain-guided tapered laser beam quality enhancement by compensating the quadratic phase curvature. The 3mm long tapered laser with an output aperture of 170μm adopted in this design consists of a gain-guided tapered section and an index-guided ridge section and operated at 980nm. The lens design is implemented by focus ion beam etching (FIBE) technique, whereby the laser diode is mounted p-side up in order to facilitate the etching process. The lens is located 600μm away from the junction of the tapered and ridge sections, and is 40μm …

Fabrication-Tolerant Active-Passive Integration Scheme For Vertically-Coupled Microring Resonators, Chyng Wen Tee, Ka Williams, Rv Penty, Ih White

Research Collection Lee Kong Chian School Of Business

The large-scale photonic integration of microring resonators in three dimensions made possible by recent developments in vertical coupling and wafer bonding technology is shown to be sensitive to lateral mask misalignment for the ring and bus waveguides introduced during the fabrication process. For a typical 20-μm radius, vertically coupled microring calculations reveal a linear relationship between deviation in the coupling coefficient and lateral misalignment. A coupling coefficient reduction of 50% is predicted for a lateral misalignment of 0.3 μm, which is typical for an alignment accuracy limited by the current state-of-the-art mask alignment process. The use of a wide multimode …

Conceptualization Of Trust, Commitment, And Understanding The Relationships Between Trust, Commitment, And Willingness To Try Internet Banking Services, Siew Tong Fock, Hian Chye Koh

Research Collection Lee Kong Chian School Of Business

This paper examines trust and commitment and their antecedents and consequences within the context of Internet banking, based on data collected from a survey of 500 Singapore undergraduates. After the establishment of a conceptual model that links trust and commitment to the willingness to try Internet banking, the empirical findings show that higher levels of trust and commitment are significantly associated with a greater willingness to try Internet banking. The paper also investigates security, ethics, privacy, openness, the speed of response, quality of information, regulatory control, technology advancement, and reputation as determinants of trust. Of these, security, regulatory control, technology …

Conflicts Of Interest And Stock Recommendations: The Effects Of The Global Settlement And Related Regulations, Rong Wang, Ohad Kadan, Leonardo Madureira, Tzachi Zach

Research Collection Lee Kong Chian School Of Business

Prior research has shown that sell-side analysts in general, and especially those facing conflicts of interest driven by investment bank relationships, issue overly optimistic recommendations. This paper studies the effect of regulations on sell-side analysts’ research. These regulations — Rule NASD 2711, Rule NYSE 472, and the “Global Analyst Research Settlement” — attempted to mitigate the interdependence between the research and the investment bank departments of US brokerage houses. The results suggest that the regulations have partially achieved their goal of curbing the conflicts of interest’s influence over analysts’ stock recommendations. After the adoption of the new regulations, the likelihood …