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A mobile agent is a particular type of agent with the ability to migrate from one host to another where it can resume its execution. Mobile agents can be used in applications for wireless network to save bandwidth and time. In this paper we consider dependability aspect, especially reliability issues that need to be addressed before the mobile agents can be used for a broad range of commercial applications...
The researching of industrial wireless network technology is in full swing, There are mainly Wireless HART, ISA SP100 and WIA. Wireless network technology used in industry must be high reliability, and heartbeat algorithm is the key technology of redundant mechanisms. This article studies a heartbeat algorithm based on the PULL mode, which focused on considering the impact for redundancy mechanism...
In order to solve the wear numerical simulation and the prediction of reliability lifetime of cylindrical roller bearing, a numerical simulation model of wear for cylindrical roller bearing is established by the method for wear numerical simulation of components. According to the discrete theory, computer technology and dynamic theory of roller bearing, with the wear state of cylindrical roller bearing...
The administration service center displays government's image to the public, and the performance of the staff directly affects administration service center's image. From the staffs' emotional labor, this paper explores the influence of emotional labor of staff on inside- role performance and extra-role performance, analyzes the mechanism of organizational support and cognitive value of the work....
Since online education service emerged at the end of the 1990s, it has been expected to reduce the cost of traditional education and finally could replace some parts of the offline education markets. Unlike the initial expectation, however, online education market is not growing up fast. In order for online education service providers to maintain and increase the number of users, which factors make...
Many trust evaluation models have been proposed for P2P networks recently. While in these models, nodes usually need to record all nodes' trust, or the time complexity is high. In our paper, we propose a trust evaluation model based on resistive network. In which, nodes only need to record their neighbors' trust and the time complexity is lower. The experiments and analysis show that, on the premise...
A technique was developed for checking whether three-dimensional CAD shape satisfies design rules. Many design rules related to reliability and manufacturability should be considered in the design stage. Our technique automatically recognizes feature shapes such as a rib and boss from a CAD model shape, and it checks the shape and arrangement. The effectiveness of the technique was demonstrated in...
The reliability of any wireless communication network is considered as one of the key issue in designing network topology. Geographical locations of nodes play a crucial role in the cost of the network. The topological design of any communication network needs to realize a specified performance at minimal cost. This paper focuses on various approaches of numbering nodes in a topology design and analyses...
This study first gave a definition about the authorizing quality of scientific and technological project, and then built the evaluation index system, proposed a new model called “hierarchical analysis- entropy-ideal solution sort” to evaluate the authorizing quality of scientific and technological projects.
The paper illustrates a way of using analytical methods in order to analyze the dependability of several replicated PLC architectures characterized by imperfect coverage. Firstly, we establish the general modeling frame of the dependability and we state the assumptions taken into account for modeling the reliability and safety of PLC systems. Then, the considered architectures are described by the...
In fact the mission for a danger control system consists of several phases. The system configuration, operational requirements for individual components, success criteria and stress on the components, can change from phase to phase. Furthermore, the duration of any phase can use deterministic or random models. All these changes and possibilities affect the system reliability. Thus, in this paper,...
The survey from local enterprises shows that relationship conflict within organization has negative impact on organizational performance, but the effect from task conflict is not significant. The variables of psychological conditions such as psychological meaningfulness, psychological safety and psychological availability not only can directly affect individual's job involvement and organizational...
This paper proposes a reliability-aware application mapping for mesh-based NoCs. The proposed reliable mapping, called RMAP, adds redundant communications to the application graph in order to improve the reliability of packet delivery in NoCs. The RMAP divides the application graph into two sub-graphs which have the lowest possible communication with each other. One of the sub-graphs is mapped on...
We propose two practical schemes for the cancellation of nonlinear distortions caused by the power amplifiers (PA) in Orthogonal Frequency Division Multiplexing (OFDM) systems. The algorithms are iterative and located at the receiver. They utilize a soft channel decoder to improve the capabilities of the distortion estimation and relay all the computational complexity to the receiver. Simulation results...
This paper discusses an energy constrained distributed estimation in wireless sensor network (WSN) based on frequency and time division multiple access (FTDMA). In a measurement with WSN, sensors transmit observed quantized data to a fusion center (FC) via radio communication channels, to obtain a final estimate. Such systems require a multiple access technique such as time division multiple access,...
Hybrid ARQ with Incremental Redundancy (IR-HARQ) is one of the most popular coding technique for having a reliable transmission link. The efficiency which is the ratio between the number of correctly received bits and the number of transmitted bits is a crucial metric for analyzing the performance of an HARQ scheme. In the literature, closed-form expressions for the efficiency of the IR-HARQ scheme...
This recommended practice covers the maintenance of industrial and commercial power systems. It covers the fundamentals of electrical equipment maintenance, how to develop successful maintenance strategies, and the common testing methods used as part of an electrical equipment maintenance program.
Multimedia communication networks, such as the Internet, are heterogeneous in their nature due to the usage of different methods for content distribution. The efficiency of multimedia distribution depends on the variety of communication protocols that are simultaneously running (composed) over different network hosts in order to resolve packet conflicts. A very natural question that arises in such...
In this paper we propose contents and results on installation and commissioning test for ATP on-board unit, which has propelled as one of the research projects, so called, "Reliability assessment and operation technology development for Korean-type tilting trains" in order to ensure the safety and operation efficiency of tilting trains. In KRRI, we have developed tilting trains for the speed-up...
This paper establishes a math model of cost-benefit data envelopment analysis based on service capacity evaluation issue of E-commerce system, and presents it as the E-commerce capability evaluation method. This evaluation method based on the basic thinking of DEA. Finally, it verifies the validity and practicality of this model through taking the actual operation of e-commerce service platform as...
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