Getting enough amounts of spare services for each task through service selection can improve the success ratio of service replacement,service re-planning and service re-selection,thus improves the reliability of compo...
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Getting enough amounts of spare services for each task through service selection can improve the success ratio of service replacement,service re-planning and service re-selection,thus improves the reliability of composite *** order to provide support to improve the reliability of composite services in the services selection stage,this paper proposes a reliability-driven web services selection method using particle *** on the definition of execution strategy,this paper presents a reliability evaluation model of composite service based on standby *** paper focuses on the execution time constraints oriented reliability-driven services selection problem,and gives out an optimal selection method based on particles *** experiment result validates the effectiveness and applicability of the proposed method.
Among a variety of composite services meeting functional demands,how to make optimization choice is a difficult problem faced by users whose QoS demand is a multidimensional objective,and QoS features are not interdep...
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Among a variety of composite services meeting functional demands,how to make optimization choice is a difficult problem faced by users whose QoS demand is a multidimensional objective,and QoS features are not interdependent. Therefore,the service choice based on QoS aggregation is a typical multiobjective optimization problem. By analyzing the existing optimization choice algorithm for composite service based on QoS aggregation,this paper has proposed an optimization choice algorithm for composite service based on cooperative evolutionary genetic algorithm;on the basis of defining service QoS attribute feature vector,it analyzes the strategy and mechanism influencing the efficiency and solution space of this algorithm and verifies the effectiveness and feasibility of this algorithm by comparison with the experiment on traditional single-species genetic algorithm.
Pearl's color is an important feature to assess its value, including the hue and its color depth. A method for pearl color classification was investigated in this paper computer Vision is used to process the pearl...
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ISBN:
(纸本)9780769538921
Pearl's color is an important feature to assess its value, including the hue and its color depth. A method for pearl color classification was investigated in this paper computer Vision is used to process the pearl image after transforming it from RGB to HSV color model, which can show the hue and color depth information of pearl. According to the histogram of V (Value) weight, the bright area is extracted by Ostu Segmentation and the average value of H (Hue) and S (saturation) are obtained Aiming at the standards of hue classification, the artificial neural network method based on RPROP Algorithm is adopted;Aiming at the color depth's difference, Fuzzy C-means Clustering Algorithm is adopted to class' the average value of S. The proposed method can be used for the first classification according to the surface color of pearl and further classification according to the saturation of pearl in the same color series and realizing the standard classification of pearl quality.
This issue starts with an introductory article on ***, which is a new Web site created by the IEEE for the benefit of the general public, including students, parents, and teachers interested in nanotechnology. The por...
This issue starts with an introductory article on ***, which is a new Web site created by the IEEE for the benefit of the general public, including students, parents, and teachers interested in nanotechnology. The portal provides a vast array of materials related to nanotechnology that helps visitors to explore materials and applications. I have found the Web site to be informative and interesting, and I urge you to visit the site at http://***/ and give it a look. The other two feature articles in this issue are examples of work presented at the 3^{\rm rd} IEEE internationalconference on Nano/Molecular Medicine and Engineering (IEEE-NANOMED 2009). We included these articles in this issue for the purpose of illustrating how nanotechnology is critical in advanced research activities related to the study of infectious disease and the development of novel sensors to sense signals from bioentities. Tung et al. first discuss the measurement of ac impedance spectrum of chicken-infectious laryngotracheities using an atomic force microscope. Then, Scarpa et al. present their work on developing biocompatible organic semiconductive polymers, which are to be used to build organic thin-film transistors that could operate as biosensors in electrolytes.
Based on GIS data,a new algorithm for generating mountain terrain of predetermined shape is presented in this *** geographical analysis,topographic macroattributes are convenient to grasp the general geography charact...
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Based on GIS data,a new algorithm for generating mountain terrain of predetermined shape is presented in this *** geographical analysis,topographic macroattributes are convenient to grasp the general geography characteristic in huge GIS data,and four topographic macroattributes are designed as target parameters of predetermined *** the geography relativity,sample regions are selected around the mountain generating region in syncretizing *** fuzzy similitude value of each sample,used to calculate sample weights,can be obtained by enduing different attribute weights to execute fuzzy similitude priority *** matrix of generated mountain is figured out by adding weighted mean of the entire sample relief matrices with elevation matrix of generating *** to geography uncertainty,there are errors between macro-attributes of generated mountain and target *** mountain can be regarded as predetermined mountain by adjusting attribute weights to control each attribute error within the 10 percent *** different mountains can be gained as predetermined mountain to syncretize with surrounding physiognomy.
Peer-to-peer (P2P) network provides an efficient way for resource sharing. However, due to lacking centralized control and the anonymity of peers, security becomes a serious problem in P2P network, especially in P2P f...
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Peer-to-peer (P2P) network provides an efficient way for resource sharing. However, due to lacking centralized control and the anonymity of peers, security becomes a serious problem in P2P network, especially in P2P file-sharing network, which heavily restricts the development of P2P file-sharing systems. Trust models have been widely used in estimating the trustworthiness of peers in P2P file-sharing systems in order to minimize threats of such open communities. However, current P2P trust models almost measure whether a peer is good or bad only by a trust value, which results in low efficiency in resisting the attacks of malicious peers. Additionally, there are more and more free-riders in P2P systems. This paper proposes a new trust model based on a 5-tuple to deal with these two problems, which integrate the set of uses, trust, experience, sharing files and heterogeneity levels. The simulation experiments are carried out to evaluate the performance and validity of this trust model in a P2P file-sharing system. The result proves that it is effective to prevent malicious act and encourage peers to share there resources in P2P network.
Intelligent transportation system (ITS) refers to efforts to add communications technology to transport infrastructure in a way to manage factors that usually are at odds with each other such as vehicle wear, safety, ...
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ISBN:
(纸本)9780769538921
Intelligent transportation system (ITS) refers to efforts to add communications technology to transport infrastructure in a way to manage factors that usually are at odds with each other such as vehicle wear, safety, fuel consumption, transportation times and air pollution. Traffic modeling of passengers in large cities is one of ITS branches. In such cities like Tabriz, passenger traffic congestion is one of the most important problems. Congestion reduces efficiency of public transportation and increases travel time, air pollution, and fuel consumption. Major part of traffic congestion in large cities is caused by public transportation such as taxies and buses. Therefore by modeling passenger distributions appropriately, optimum distribution of taxies and buses will be achieved to decrease traffic congestion and increase efficiency of public transportation. In this paper labeled hyper multi digraph method as data-oriented models is used to model passenger distributions in Tabriz.
The Three Gorges Reservoir is one of the largest water conservancy and control projects in the world After the accomplishment of the project in 2009 a 30-meter high water-level-fluctuating zone will appear along the b...
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The Three Gorges Reservoir is one of the largest water conservancy and control projects in the world After the accomplishment of the project in 2009 a 30-meter high water-level-fluctuating zone will appear along the banks. The WLFZ is a seasonal humid ecosystem The distributed features and useful values of WLFZ are explored according to the program of water storage in the Three Gorges Reservoir in this paper. Six principles in the exploitation and utilization of land resource are stated namely sustainable land use;priority of ecosystem security;coordination of economic, ecological and social benefits;utilization based on types and elevation of WLFZ;market-orientation;easy ones first and difficult ones afterwards Meanwhile, according to the types grades soil textures shapes of landforms and climate conditions in WLFZ six models for land use are suggested as (1)agricultural development model in open terraces of WLFZ;(2) forestry and pasturing model on moderate and gentle sloping land (slope<15°)of WLFZ;(3)aquatic product model in river bend of WLFZ;(4)tourism development model in areas with unique landscapes of WLFZ;(5)closing hillsides to facilitate forestation model through natural and artificial ways in gorges or rock exposed regions of WLFZ;and(6)town(city)landscape construction and geologic disaster prevention model of WLFZ Some eco-environmental and pollution problems possibly incurred in the exploitation of WLFZ are also analyzed, and corresponding proposals are put forward, hoping to provide scientific basis for the planning and development of land resources of the Water-Level-Fluctuating Zone.
Software runtime state provides rich information to do various analysis of the ***,the current runtime monitoring techniques entangle state fetching logic and corresponding processing logic,which limits the use of the...
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Software runtime state provides rich information to do various analysis of the ***,the current runtime monitoring techniques entangle state fetching logic and corresponding processing logic,which limits the use of the state information and doesn't support information synthesizing *** this paper,we proposed a runtime state fetching method which separates *** designed a State Fetching Description language (SFDL) to describe state monitoring requirement,and implemented a compiling framework to compile the SFDL into monitor probes,gather runtime state information and store them in a general form for future *** design separates the state fetching logic from information processing logic,liberates the runtime state information from specific usage and makes it possible to synthesize runtime state information which is important for distributed system to get the overall *** the end,we applied our approach to performance tuning on a distributed *** on the obtained detailed running state,we are able to identify some performance bottlenecks and improve the software.
<正>The role of MICE service industry in current economy has been widely *** is widely accepted that the extension of MICE service industry chain would be an effective method to bring along relevant *** on literatur...
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<正>The role of MICE service industry in current economy has been widely *** is widely accepted that the extension of MICE service industry chain would be an effective method to bring along relevant *** on literature review we can acknowledge that the systematic research on MICE service industry chain is limited,thus this paper aims to provide a theoretical explanation on the formation of MICE service industry chain,and makes thorough explanation on the connation,function and inner structure of MICE service industry chain,then along with the process of value making,this paper further analyze the value chain of MICE service industry,and determine the inner value chain and outside value chain,thus we can conveniently distinguish the direct and indirect related MICE service *** research would have active meanings for us to acknowledge an make full use of MICE service industry chain to accelerate its strength for economic and social development,also can aid the relevant directors and managers to acknowledge the role of MICE service industry chain in the current economy and make more objective decisions.
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