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< Page ,Total 1041 >
The impact of GSS on the prevention of groupthink: Moderating effects of task structures CPCI-SSH CPCI-S
会议论文 | 2003 , 39-44 | International Conference on Management Science and Engineering
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Abstract :

Groupthink is a problem that often plagues decision-making groups. Group support systems (GSS), an advanced computer-based technology for support decision-making and related group activities, may provide a solution to this problem. This paper reviewed the groupthink problem and analyzed the role GSS could be expected to play in mediating this problem. Based on the literature reviewed, a conceptual framework is proposed which suggests that structures of decision tasks can moderate the effects of GSS on the prevention of groupthink. Some propositions that need to be further tested are put forward finally.

Keyword :

group support systems groupthink group decision making

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GB/T 7714 Bi, PC , Xi, YM , Wang, YY . The impact of GSS on the prevention of groupthink: Moderating effects of task structures [C] . 2003 : 39-44 .
MLA Bi, PC 等. "The impact of GSS on the prevention of groupthink: Moderating effects of task structures" . (2003) : 39-44 .
APA Bi, PC , Xi, YM , Wang, YY . The impact of GSS on the prevention of groupthink: Moderating effects of task structures . (2003) : 39-44 .
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Construction on orthogonal multiwavelets for derivatives of multivariate vector scaling function with compact support CPCI-S
会议论文 | 2003 , 701-706 | 3rd International Conference on Wavelet Analysis and Its Applications (ICWAA)
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Abstract :

The derivatives of multivariate vector scaling function with Compact Support is proved to be refinable one in [1], and its refinable coefficients denoted by Kronecker product of matrices. In view of this, the paper applies the elementary property of the Kronecker product, and uses the technique similar to [2], to give a general construction for the orthogonal multi-wavelets of the derivative function, at the same time, obtains the simply computational algorithm. Lastly we present an example to show how construct wavelets of derivatives of multi-scaling refinable function.

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GB/T 7714 Feng, XX , Cheng, ZX . Construction on orthogonal multiwavelets for derivatives of multivariate vector scaling function with compact support [C] . 2003 : 701-706 .
MLA Feng, XX 等. "Construction on orthogonal multiwavelets for derivatives of multivariate vector scaling function with compact support" . (2003) : 701-706 .
APA Feng, XX , Cheng, ZX . Construction on orthogonal multiwavelets for derivatives of multivariate vector scaling function with compact support . (2003) : 701-706 .
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Data replication at Web proxies in content distribution network EI CPCI-S SCIE
会议论文 | 2003 , 2642 , 560-569 | 5th Asia Pacific Web Conference
WoS CC Cited Count: 2
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Abstract :

This paper investigates the problem of optimally replicating objects at the candidate proxies in content distribution network. In our model, each proxy in the set of candidates has a finite storage capacity for replicating objects and charges fee for use. The optimization problem is to find a set of proxies from candidates set for replicating objects at them such that the total access cost is minimized, subject to the constraints that the objects placed at a proxy should not exceed the storage capacity of the proxy and the total fees charged by the proxies should not exceed a pre-specified budget. We formulate this problem as a combinational optimization problem and show that this optimization problem is NP complete. We propose two heuristics and evaluate them by simulation. The simulation results show that these two heuristics could significantly reduce the access cost.

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GB/T 7714 Zhang, XP , Wang, WD , Tan, XP et al. Data replication at Web proxies in content distribution network [C] . 2003 : 560-569 .
MLA Zhang, XP et al. "Data replication at Web proxies in content distribution network" . (2003) : 560-569 .
APA Zhang, XP , Wang, WD , Tan, XP , Zhu, YH . Data replication at Web proxies in content distribution network . (2003) : 560-569 .
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An efficient multiscale approach to level set evolution EI CPCI-S Scopus
会议论文 | 2003 , 25 , 694-697 | 25th Annual International Conference of the IEEE-Engineering-in-Medicine-and-Biology-Society
WoS CC Cited Count: 3
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Abstract :

In this paper, an efficient multiscale scheme for level set evolution is proposed. First, we are addressing the problem of passing the solution from the coarser scale to the finer one. Inspired by the idea of the entropy condition and its extention, an efficient passing solution method is presented, where neither extrapolation nor complex computation is needed. Thus it could induce fast convergence rate. Furthermore, an improved Hermes algorithm, called fast Hermes, is developed to fast implement the level set evolution on each scale by further loosening the constraint in the intermediate levels. Our approach is evaluated and compared to the existing algorithm. The experimental results are very promising.

Keyword :

potential front multiscale segmentation front propagation level set fast Hermes

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GB/T 7714 Zhang, HM , Bian, ZZ , Gu, YM et al. An efficient multiscale approach to level set evolution [C] . 2003 : 694-697 .
MLA Zhang, HM et al. "An efficient multiscale approach to level set evolution" . (2003) : 694-697 .
APA Zhang, HM , Bian, ZZ , Gu, YM , Fei, BW , Ye, M . An efficient multiscale approach to level set evolution . (2003) : 694-697 .
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A novel sheath fault location method for high voltage power cable EI CPCI-S Scopus
会议论文 | 2003 , 195-198 | 7th International Conference on Properties and Applications of Dielectric Materials
WoS CC Cited Count: 2
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Abstract :

It is important for power cable, especially high voltage single core cable, to have a healthy sheath. Once the cable sheath is faulty, it would accelerate the aging process of cable insulation, and result in failure of the conventional on-line condition monitoring system due to inaccurate insulation measurement. Traditional fault location methods for main insulation of power cable such as the radar method are no longer valid for sheath insulation fault. The bridge method and voltage comparison method are applicable for sheath fault location, but their accuracies are subject to influences of the contact resistance and resistance of test leads. A novel fault location method for power cable sheath fault is presented in this paper. The resistance of outer metal layer of the fault cable between the terminal and the fault position is measured, and then compared to the known unit resistance to calculate distance to fault. Therefore, it is free from the influence of contact resistance and intrinsic resistance of test leads. Case studies show that the proposed method is effective to determine the position of sheath faults of high voltage power cable on-site.

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GB/T 7714 Li, MH , Xu, BY , Yan, Z . A novel sheath fault location method for high voltage power cable [C] . 2003 : 195-198 .
MLA Li, MH et al. "A novel sheath fault location method for high voltage power cable" . (2003) : 195-198 .
APA Li, MH , Xu, BY , Yan, Z . A novel sheath fault location method for high voltage power cable . (2003) : 195-198 .
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Study on the aging condition of stator bar based on ultra-wideband PD detection technique EI CPCI-S Scopus
会议论文 | 2003 , 220-223 | 7th International Conference on Properties and Applications of Dielectric Materials
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Abstract :

In this paper, the accelerated aging experiment based on the stator bar of 780kW/6kV large motor had been conducted in the laboratory in order to simulate the practical aging of large motor or generator in service. The PD of insulation was measured at the end of each aging cycle by using the Ultra-Wide-Band (UWB) PD detection technique. Moreover, the developing characteristics of PD in time-domain and frequency-domain were analyzed by using FFT. The experiment results showed that the high-frequency surge of time-domain wave became more and more severe and the width of PD pulse always shortened with aging time. The high-frequency components in frequency-domain became richer with aging time. In addition, the number of peak in frequency spectrum increased and the main peak of frequency spectrum moved gradually to the high frequency with deterioration of insulation.

Keyword :

multistress aging ultra-wide-band (UWB) partial discharge

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GB/T 7714 Bo, Y , Chen, CL , Xiang, S et al. Study on the aging condition of stator bar based on ultra-wideband PD detection technique [C] . 2003 : 220-223 .
MLA Bo, Y et al. "Study on the aging condition of stator bar based on ultra-wideband PD detection technique" . (2003) : 220-223 .
APA Bo, Y , Chen, CL , Xiang, S , Xie, HK . Study on the aging condition of stator bar based on ultra-wideband PD detection technique . (2003) : 220-223 .
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The application of HV ceramic capacitors to VHFPD monitoring in hydrogenerators EI CPCI-S Scopus
会议论文 | 2003 , 254-257 | 7th International Conference on Properties and Applications of Dielectric Materials
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Abstract :

BaTiO3 based ceramic capacitors have been widely used in power system for their excellent withstand ability to high-voltage, wide temperature range and humidity characters. In this paper, these capacitors were used as couplers for VHF (Very high frequency) partial discharge (PD) monitoring instead of micro stack capacitors, which are commonly installed at line terminals of hydrogenerators. The coupler construction and its manufacturing techniques were briefly discussed. The dielectric properties under different circumstances and frequency response of the coupler were also studied. Finally, these couplers were successfully installed in a hydro-plant in China and some valuable data were obtained.

Keyword :

HV ceramic capacitors couplers partial discharge VHF hydrogenerators

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GB/T 7714 Wang, K , Xu, Y , Fang, Q et al. The application of HV ceramic capacitors to VHFPD monitoring in hydrogenerators [C] . 2003 : 254-257 .
MLA Wang, K et al. "The application of HV ceramic capacitors to VHFPD monitoring in hydrogenerators" . (2003) : 254-257 .
APA Wang, K , Xu, Y , Fang, Q , Chen, W , Cao, XL . The application of HV ceramic capacitors to VHFPD monitoring in hydrogenerators . (2003) : 254-257 .
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Study on the partial discharge characteristics of the XLPE insulation samples during electrical treeing ageing EI CPCI-S Scopus
会议论文 | 2003 , 211-214 | Proceedings of the 7th International Conference on Properties and Applications of Dielectric Materials
WoS CC Cited Count: 2
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Abstract :

The partial discharge characteristics in the XLPE insulation during electrical treeing ageing are studied in this paper. The condition of electrical tree initiation is well established under ac stress. Specimens using point-plane electrode geometries in XLPE insulated samples have been investigated. Using the partial discharge detection system, which includes traditional detecting method and ultra-wideband(UWB) partial discharge detecting method, the partial discharge characteristics of XLPE insulation during treeing are studied. We can find that the characteristics of UWB partial discharge signals have a change observably in the time-domain and frequency-domain during electrical treeing. The high energy density area of the partial discharge signals of the XLPE insulation specimens moves to the higher frequency during electrical treeing. Thus, the status of XLPE insulation can be evaluated by detecting the partial discharge signals occurring in them. It is important of this research for evaluating the status of XLPE power cables in service.

Keyword :

electrical treeing XLPE power cables partial discharge

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GB/T 7714 . Study on the partial discharge characteristics of the XLPE insulation samples during electrical treeing ageing [C] . 2003 : 211-214 .
MLA "Study on the partial discharge characteristics of the XLPE insulation samples during electrical treeing ageing" . (2003) : 211-214 .
APA . Study on the partial discharge characteristics of the XLPE insulation samples during electrical treeing ageing . (2003) : 211-214 .
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Synthetic analysis technique of oil-impregnated insulation CPCI-S
会议论文 | 2003 , 129-132 | 7th International Conference on Properties and Applications of Dielectric Materials
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Abstract :

Insulation analysis is a comprehensive issue that relates theory and knowledge in many fields, sometimes achieving an accurate conclusion is still a problem yet unsolved. In this paper, a comprehensive analysis scheme based on the fuzzy logic is presented to synthesize more information came from both off-line tests and on-line monitoring, at the same time data mining is also used to find latent knowledge out. To combine various methods in systematically way, the fuzzy reasoning is adopted in this framework to manage the inherent uncertainty in various methods and semantic experiences accumulated by experts. The case studies show that this scheme is efficient and flexible.

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GB/T 7714 Dong, M , Yan, Z , Taniguchi, Y . Synthetic analysis technique of oil-impregnated insulation [C] . 2003 : 129-132 .
MLA Dong, M et al. "Synthetic analysis technique of oil-impregnated insulation" . (2003) : 129-132 .
APA Dong, M , Yan, Z , Taniguchi, Y . Synthetic analysis technique of oil-impregnated insulation . (2003) : 129-132 .
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Study on wideband sensor of partial discharge for XLPE power cable EI CPCI-S Scopus
会议论文 | 2003 , 203-206 | 7th International Conference on Properties and Applications of Dielectric Materials
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Abstract :

Based on the characteristics of partial discharge signals occurring in XLPE power cable and the theory of electromagnetic coupling effect, we developed a wideband sensor for detecting partial discharge signals occurring in XLPE power cable. The experimental result indicated that the sensor was fit to apply in wideband frequency with high signal-to-noise ratio (SNR). It was the foundation for partial discharge online monitor of XLPE power cable.

Keyword :

and power cable electromagnetic coupling effect partial discharge XLPE insulation

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GB/T 7714 Chen, XL , Cheng, YH , Rong, MZ et al. Study on wideband sensor of partial discharge for XLPE power cable [C] . 2003 : 203-206 .
MLA Chen, XL et al. "Study on wideband sensor of partial discharge for XLPE power cable" . (2003) : 203-206 .
APA Chen, XL , Cheng, YH , Rong, MZ , Zhang, SF , Xie, HK . Study on wideband sensor of partial discharge for XLPE power cable . (2003) : 203-206 .
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