In recent years, the growing integration of economies and societies around the world has required that graduates of all institutions and disciplines be prepared to work in an economy that is now best seen as essential...
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In recent years, the growing integration of economies and societies around the world has required that graduates of all institutions and disciplines be prepared to work in an economy that is now best seen as essentially international. Global markets are dictating the way that national economies around the world design, distribute, and consume goods and services. Engineers are in the midst of this dynamic development. Most large engineering projects currently require multi-national teams of multi-disciplinary professionals to work together and, therefore, a better understanding of the global economy, communication skills, cultural awareness, and interpersonal skills are critical to engineers. In this context, universities around the world are increasingly moving to establish international partnerships in their education and research programs. This growing trend is fuelled by many factors, including the need to give students the education they require to work in an increasingly globalized world. In this paper, the authors discuss the key concepts of an engineering educational consortium between the United States and Brazil, formed with the objective to establish a sustainable exchange of undergraduate students in engineering between the U.S. and Brazil. The consortium is identifying the main barriers that currently prevent the existence of exchange of engineering students between the U.S. and Brazil that is consistent with the geographic location and the geopolitical importance of these two countries, so that these barriers can be addressed during the program. The consortium is focusing engineering education in the disciplines of electrical engineering, mechanical engineering, and electrical engineeringtechnology, with emphasis in the area of renewable and alternative sources of energy. The authors describe the preliminary stages of this multidisciplinary project, and the goals and progress made in first year of the four- year project (October'07 to September'11). Th
In Internet, IP multicast has been used successfully to provide an efficient, best-effort delivery service for group communication applications. However, applications such as multiparty private conference, distributio...
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ISBN:
(纸本)9780889868021
In Internet, IP multicast has been used successfully to provide an efficient, best-effort delivery service for group communication applications. However, applications such as multiparty private conference, distribution of stock market information, pay per view and other subscriber services require secure multicast to protect integrity and confidentiality of the group traffic, and validate group member's authenticity. Providing secure multicast for group communication is problematic without a robust group key management. In this paper, we propose an anonymous group key management with ID-based Signature and secret sharing technologies to distribute a new group key securely to each participant of a group with only one rekey message whenever the group membership changes. The key management guarantees that a legal user, without revealing his/her real identity, can join a group after finishing the mutual authentication with the group initiator, and enforces the forward secrecy and backward secrecy.
An integrated EPON/WiMAX network has been an attractive attention due to its features of achieving stable backhaul transmissions to WiMAX users and reducing the expenditure of network deployment. In implementing such ...
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ISBN:
(纸本)9781424441488
An integrated EPON/WiMAX network has been an attractive attention due to its features of achieving stable backhaul transmissions to WiMAX users and reducing the expenditure of network deployment. In implementing such a network, realizing a scheduling mechanism capable of sharing the available bandwidth between the heterogeneous Ethernet and WiMAX traffic in an effective manner is problematic. In the present study, this problem is addressed by using a game-theoretic-based scheme comprising a bankruptcy game and a bargaining game to perform an intra-ONU scheduling function at each ONU within the network. In the proposed approach, each ONU distributes the total amount of bandwidth allocated by the OLT between the Ethernet and WiMAX traffic buffers in accordance with the results of the bankruptcy game. By applying bargaining games, the allocated bandwidth is then further distributed to the different traffic classes within the Ethernet or WiMAX traffic in accordance with their QoS requirements. The simulation results confirm the validity and effectiveness of the proposed approach.
Studies indicate that making learners feel good is important only minor to clear knowledge transformation. Many studies have tried to use virtual humans as a part of interface in learning systems to increase the effec...
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ISBN:
(纸本)9781605587578
Studies indicate that making learners feel good is important only minor to clear knowledge transformation. Many studies have tried to use virtual humans as a part of interface in learning systems to increase the effect of instructions. Based on social interaction and pedagogical theories, many e-learning systems use animated films or virtual reality to boost human-computer engagement and ease their negative emotions. However, affective learning systems still need much research to improve their functionalities and usability. This study proposed a convenient approach to develop an emotionally interactive learning system;learners can express their emotions by mouse-clicking while learning. A virtual human was created to empathically react to learners in proactive and reactive ways to encourage and persuade them into persistent learning and help achieve their goals. Experimental results show that, averagely, subjects can tell virtual human's emotions and agree to its empathic reactions. Persuasion conducted by virtual human could not increase subjects' learning time, but could significantly increase their completion rate of exercises. Copyright 2009 ACM.
This article presents a voltage-mode multi-function filter performing completely standard functions: low-pass, high-pass, band-pass, band-reject and all-pass functions, current controlled differential voltage current ...
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The current robot-assisted surgery has built in significant safety features, force feedback system, pre-operative planning software, but due to a lack of communication between the robot and the surrounding medical dev...
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Reliable wireless transmission of medical data is achievable in a modern telemetry setting and is put to good use. However, intercommunications among the different medical devices and initiation of controls to avoid u...
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ISBN:
(纸本)9783642016967
Reliable wireless transmission of medical data is achievable in a modern telemetry setting and is put to good use. However, intercommunications among the different medical devices and initiation of controls to avoid unsafe incidents are generally not available. Interoperability among medical devices connected to a patient at a remote site is a challenging feature for practical realization that would increase safety. A new system is proposed to improve infusion therapy safety by implementing an interoperability feature coupled with a smart clinical decision support system. This system is designed to respond promptly to medication error alerts by the use of safety commands and interlocks. The design incorporates an innovative Intelligent Interoperability Supervisor (IIS) in the system which includes an infusion pump (or pumps) delivering drug therapy to a patient connected to relevant monitoring devices. A local decision support unit in IIS in the remote location analyzes the data transmitted by interface modules on the connected medical devices and verifies with preset patient-specific alarm criteria to detect presence of any crisis or to predict potential adverse episode. If the situation is assessed to be critical, IIS sends appropriate alert signals to a remote clinical care giver and control commands to the infusion pump to activate appropriate safety interlocks. Different critical situations of clinical cases are simulated in a conventional infusion therapy system (Configuration A), and in an IIS-implemented system (Configuration B). In Configuration A, there would be a significant delay between alarm occurrence and clinician intervention;such a time delay could lead to potential deterioration of patient condition. In Configuration B, clinically abnormal values are detected and the patient state is analyzed. If the situation demands, the system would promptly initiate the stop control command to the corresponding infusion pump ensuring safety and alerting the cl
In this paper, a finger pose estimation method is presented. A direct use of fingers is useful in some applications which require handling of 3D position information. Our finger pose estimation method exploits anatomi...
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In this paper, a finger pose estimation method is presented. A direct use of fingers is useful in some applications which require handling of 3D position information. Our finger pose estimation method exploits anatomical constraints on finger motion and ring-shaped markers to achieve simple and practical measurements applicable to daily life situations. The use of anatomical constraints ensures that no exact placement of the markers is required.
We study both classical and quantum relation between two Hamiltonian systems which are mutually connected by time-dependent canonical transformation. One is ordinary conservative system and the other is timedependent ...
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We study both classical and quantum relation between two Hamiltonian systems which are mutually connected by time-dependent canonical transformation. One is ordinary conservative system and the other is timedependent Hamiltonian system. The quantum unitary operator relevant to classical canonical transformation between the two systems are obtained through rigorous evaluation. With the aid of the unitary operator, we have derived quantum states of the time-dependent Hamiltonian system through transforming the quantum states of the conservative system. The invariant operators of the two systems are presented and the relation between them are addressed. We showed that there exist numerous Hamiltonians, which gives the same classical equation of motion. Though it is impossible to distinguish the systems described by these Hamiltonians within the realm of classical mechanics, they can be distinguishable quantum mechanically.
We propose a system which separates saxophone melodies from composite recordings of saxophone, piano, and/or orchestra. The system is intended to produce an accompaniment sans saxophone suitable for rehearsal and prac...
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We propose a system which separates saxophone melodies from composite recordings of saxophone, piano, and/or orchestra. The system is intended to produce an accompaniment sans saxophone suitable for rehearsal and practice purposes. A Melody Line Detection (MLD) algorithm is proposed as the starting point for a source separation implementation which incorporates known information about typical saxophone melody lines, acoustic characteristics and range of the saxophone in order to prevent and correct detection errors. By extracting reliable information about the soloist melody line, the system separates piano or orchestra accompaniments from the solo part. The system was tested with commercial recordings and a performance of 79.7% of accurate detections was achieved. The accompaniment tracks obtained after source separation successfully remove most of the saxophone sound while preserving the original nature of the accompaniment track.
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