The aim of this panel session is to promote discussion on emergent challenges and the need for advancements in the theory, methodology, applications, education in M&S. The changing landscape in science and enginee...
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Acoustic feedback is an annoying problem in several audio applications and especially in hearing aids. Adaptive feedback cancellation techniques have attracted recent attention and show great promise in reducing the d...
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ISBN:
(纸本)9781424418145
Acoustic feedback is an annoying problem in several audio applications and especially in hearing aids. Adaptive feedback cancellation techniques have attracted recent attention and show great promise in reducing the deleterious effects of feedback. In this paper, we investigated the performance of a class of adaptive feedback cancellation algorithms viz. the approximated Affine Projection Algorithms (APA). Mixed results were obtained with the natural speech and music data collected from five different commercial hearing aids in a variety of sub-oscillatory and oscillatory feedback conditions. The performance of the approximated APA was significantly better with music stimuli than natural speech stimuli.
Interprofessional education is a pedagogical approach which allows health care practitioners to develop a clear under- standing and appreciation of the roles, expertise, and unique contributions of their disciplines a...
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ISBN:
(纸本)9781605582184
Interprofessional education is a pedagogical approach which allows health care practitioners to develop a clear under- standing and appreciation of the roles, expertise, and unique contributions of their disciplines as well as those of the other participating health care providers. It also helps build effec- tive team relationships which is essential for optimal health care delivery. Interactive virtual simulation environments, such as serious games, can be used to augment traditional classroom-based interprofessional teaching methods as mul- tiple team members may participate in the simulation si- multaneously regardless of their physical location or time of day. Here we describe the Interprofessional Care Simulator for interprofessional education. Copyright 2008 ACM.
Research on selfish nodes in wireless ad hoc networks has received considerable attention recently. However, most work concentrates on throughput study of the effects of selfish nodes, but lacks an analytical study to...
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Research on selfish nodes in wireless ad hoc networks has received considerable attention recently. However, most work concentrates on throughput study of the effects of selfish nodes, but lacks an analytical study to accurately predict the delay. With the rising popularity of delay-sensitive real-time multimedia applications (video, voice and data) in wireless ad hoc networks, it is becoming important to study the MAC delay performance of ad hoc networks in the presence of selfish nodes. In this paper, based on a two-dimensional Markov chain model, we analyze the medium access delay with selfish nodes. The proposed analysis applies both the basic access and the RTS/CTS access mechanisms. Through extensive simulations, the analytical model and delay results of selfish nodes and well-behavior nodes are validated using IEEE 802.11 DCF protocol.
A social network represents a social community as a directed graph. Communication on the Web has given rise to social network formation like, Web Community, Referral System etc. An earlier effort has proposed a data m...
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A social network represents a social community as a directed graph. Communication on the Web has given rise to social network formation like, Web Community, Referral System etc. An earlier effort has proposed a data model for such Web-based social network. Present paper discusses the relevant index structures for processing queries on a social network schema based upon the proposed data model. The paper has also provided evaluation of the structural operators proposed in the data model and discussed their efficacy with query examples.
We propose a two-dimensional electron-gas (2DEG) system in which an external magnetic field with a small chirality is applied to provide a topological spin gauge field that separates conduction electrons of opposite s...
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We propose a two-dimensional electron-gas (2DEG) system in which an external magnetic field with a small chirality is applied to provide a topological spin gauge field that separates conduction electrons of opposite spins in the transverse direction. Additionally, the vertical electric field in the 2DEG, together with spin-orbit coupling, produces a SU(2) gauge field which reinforces or opposes the effect of the spin gauge. The system thus provides a tunable spin separation effect, where an applied gate voltage on the 2DEG can be used to modulate the transverse spin current. As this method leads to the enhancement or cancellation of spin separation due to the intrinsic spin-orbit coupling effect only, it may naturally distinguish the extrinsic effect from the intrinsic one.
In this paper we discuss the use of accelerometers and Bluetooth to monitor canine pose in the context of common poses observed in Urban Search and Rescue dogs. We discuss the use of the Canine Pose System in a disast...
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This research integrates Taguchi's parameter design method, back-propagation neural networks (BPNN), and Davidon-Fletcher-Powell (DFP) method to optimize the process parameter settings of plastic injection molding...
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This research integrates Taguchi's parameter design method, back-propagation neural networks (BPNN), and Davidon-Fletcher-Powell (DFP) method to optimize the process parameter settings of plastic injection molding. Taguchi's parameter design method is used to arrange an orthogonal array experiment and to reduce the number of set-test cycles. Injection Time, Velocity Pressure Switch Position, Packing Pressure, and Injection Velocity are selected as process control parameters and product weight is selected as the single product quality. The experimental data of Taguchi's parameter design method are used for effectively training and testing BPNN. Then, BPNN is combined with DFP to search out the final optimal process parameter settings. Finally, a confirmation experiment is performed to confirm the effectiveness of the final optimal process parameter settings. The experimental results show that the proposed effective process parameter optimization approach can avoid shortcomings inherent in the application of trial-and-error processes or the conventional Taguchi parameter design method. Furthermore, the proposed approach can effectively assist engineers in determining optimal initial process parameter settings and achieving competitive advantages on product quality and costs.
Cluster formation and cluster head selection are important problems in sensor network applications and can drastically affect the network’s communication energy dissipation. However, the selection of cluster head is ...
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Cluster formation and cluster head selection are important problems in sensor network applications and can drastically affect the network’s communication energy dissipation. However, the selection of cluster head is not easy in different environments which may have different characteristics. In this paper, in order to deal with this problem we propose a power reduction algorithm for sensor networks based on fuzzy logic and number of neighbor nodes. We evaluate the proposed system by simulations and show that proposed system makes a good selection of the cluster head.
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