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In multi-sources information fusion, because of the diversity of evidences, especially the imperfect evidences, it's difficult to get a satisfied result. To avoid and reduce the influence of the mistaken or conflicting information on the final precision of fusion, a pre-processor of evidence sources is proposed and proved. A MES (measurement of evidence support) pre-processor is designed. Firstly,...
Building on previous researches, this study empirically tested the relationship between undergraduates' academic stress and their perceived psychological distress, and the moderating effects of psychological capital. Using a sample of 118 undergraduates from a university located in Northern China. The hierarchical regression analysis with SPSS 16.0 was employed to test the hypotheses. The results...
Bayesian inference techniques have been used to understand the performance of human subjects on a large number of sensory tasks. Particularly, it has been shown that humans integrate sensory inputs from multiple cues in an optimal way in many conditions. Recently it has also been proposed that causal inference can well describe the way humans select the most plausible model for a given input. It is...
The purpose of this study was to examine how cultural dimension related to service quality and behavioral intention in tourist hotel industry. To investigate this issue, 761 tourists visiting Beijing were interviewed. These tourists included 195 Chinese, 189 Korean, 192 Japanese and 185 American. Results from this study suggested that there were cross-cultural differences toward service quality dimensions...
Unpredictable natural disasters and human interventions could pose significant threats to the undersea cables of modern telecommunication networks. In this paper, we consider the network topology of the undersea cables and propose a rectangular network to prevent all the cable links from being damaged simultaneously. An optimization problem on the plane is formulated to minimize the total cost under...
In this work, a new method to adaptively determine the weights of experts in group decision based on TOPSIS group ideal solution is developed, given the weights of attributes and subjective weights of experts. By adjusting the weights of experts according to the similarity between individual decision and group decision that is based on TOPSIS group ideal solution, the relatively stable weights of...
Traditional approaches to programming robots are generally inaccessible to non-robotics-experts. A promising exception is the learning from demonstration paradigm. Here a policy mapping world observations to action selection is learned, by generalizing from task demonstrations by a teacher. Most learning from demonstration work to date considers data from a single teacher. In this paper, we consider...
In reliability engineering, how to determine failure distribution of object according to failure data is an important and practical work. In this paper, the shortcoming of determining failure distribution in intuition was pointed out, which was based on leaf-figure maneuver, and an idea of quantitating similarity between theoretical curve and testing curve to determine distribution of sample was presented...
In UMTS Enhanced Uplink (EUL), 2 and 10 ms TTIs are supported, which substantially decreases latency and increases data rates compared to DCH. However, due to the shorter TTI compared to DCH, coverage may be an issue in situations where the use of multiple re-transmissions is not feasible. This paper evaluates four possible methods to increase the EUL coverage: Configurable minimum data power offset,...
Novel channel models as from COST 273 and IST-WINNER projects are models to evaluate the performance of multi-antenna concepts under link-level and system-level. For consistent performance evaluation the channel models needed to be parameterized by multipath parameters based on measurements. It seems these parameters can be grouped into geometrically co-located paths, so called clusters. The reliability...
Wireless sensor network (WSN) is a novel technology in acquiring and processing information and has been an active research area in recent years. In this paper, firstly, a high reliability routing protocol is designed which is able to rapidly detect the change of topological and routing information of network, choose the best route, recover route when some nodes damaged. Secondly, the basic information...
Chimney-like directory agent service location Protocol and mesh-connection directory agent mesh service location protocol are the two main hybrid service discovery mechanisms. However, it is reasonable to improve network performance by optimizing local unit size from the opinion of both sociology and network optimization. Based on the theory of "small-world network" of Watts and Strogatz,...
In this paper, we investigate the use of cooperative communications for reliable data dissemination in wireless sensor networks. We first identify the disadvantages of some existing cooperative schemes. While the previously proposed ldquomulti-hop mesh cooperative transmission structurerdquo addresses these disadvantages, it suffers from large end-to-end delays during data disseminations due to its...
Recent advances in wireless communications and micro-electro-mechanical systems have fostered the development of wireless sensor networks (WSNs) which consist of tiny, low-cost and low-power sensor nodes. Individual sensor nodes only have local views of the environment, but global views can be obtained by collaborative processing between densely deployed sensor nodes. Energy efficiency is critical...
This paper addresses the problem how to represent diverse field usage of professional systems in an efficient way, so that field usage can be incorporated in reliability tests. With diverse we mean the variability in system use in the field. Operational profiles are constructed from system field data to represent system field use. A clustering technique is introduced and applied in a strategic way...
The latest political initiatives on energy saving are forcing distributors to implement actions that increase the energy efficiency of their system. Among these actions distributors can drive the development of the distributed generation (DG) on their networks. The inclusion of the energy saving goal among the terms of the objective function makes the DG allocation problem more and more complicated,...
The eddy current proximity sensor or probe is composed of exciting winding, detection winding and post processing circuit. Models of the key structural and electromagnetic parameters of the sensor are analyzed. The mutual influence characteristics induced by the structural and electromagnetic parameters are provided accordingly. The pull up resistor used to improve the reliability of the sensor will...
We developed a quality of service (QoS) management system to support service level management (SLM) for global enterprise services. The QoS management system is integrated with one of our enterprise services in a preproduction system, an identical system as the production system but in a test environment. Lab experiments showed that our integrated solution helps global enterprise services to better...
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