The complex requirements of E-commerce application call for selecting a set of Web services to reuse theirs business logics, where Service Oriented Architecture (SOA) provides a promising solution to the problem of cr...
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The complex requirements of E-commerce application call for selecting a set of Web services to reuse theirs business logics, where Service Oriented Architecture (SOA) provides a promising solution to the problem of cross-platform services integration. To this purpose, how to discovery services is a key to support the quick services composition, which has been a challenging task in Web application engineering. However, the traditional approaches have limitations in recall ratio and precision ratio because the keyword and semantic annotation query modes are hard to verify the target Web service, such as interaction behaviors and control flows of composite service. In this paper, it proposes a probabilistic model checking based service discovery method. First, it focuses on service reliability and time constraints to formalize the probabilistic behaviors of service process. Second, the quantitative verification properties of user requirements are specified in the form of temporal logic formulae. Third, the service discovery is to verify service process model against expected properties for identifying candidate services. Finally, in order to reduce model checking tasks, the correlation based service recommendation is introduced to explore more suitable services for user. Our framework improves the efficiency of service discovery without changing any existing service infrastructures.
Amid the information era, energy consumption of IDC computer Room Air Conditioning (CRAC) system is becoming increasingly serious, thus there is growing concern over energy saving and consumption reduction. Based on t...
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ISBN:
(纸本)9781785610325
Amid the information era, energy consumption of IDC computer Room Air Conditioning (CRAC) system is becoming increasingly serious, thus there is growing concern over energy saving and consumption reduction. Based on the analysis of the energy saving application of the air conditioning system in the present computer room, a new energy saving method of the IDC CRAC system, which presents energy saving decision based on the prediction of equipment load state, is proposed. Its principle is collection of CPU utilization reflected the change of equipment state according to the predict of distribution condition of the next cycle by building and decomposing the original time series and building a seasonal decomposition model with Holt Winters forecasting method. Choosing a reasonable and effective decision-making scheme of the air conditioning system can realize energy saving control. Simulation experiments represent that energy consumption is reduced by 18.75% during the experiment with the energy saving method proposed in this paper and the energy saving advantage is fully reflected.
The complicated workflow is need to develop some complex scripts, which contains data and not easy to modify in automation testing tools. The paper proposed an automatic test framework to fulfill workflow testing requ...
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ISBN:
(纸本)9781467391054
The complicated workflow is need to develop some complex scripts, which contains data and not easy to modify in automation testing tools. The paper proposed an automatic test framework to fulfill workflow testing requirements. The test framework should develop single file according to the each test requirement. The file is defined executed object and related test data, which drive by test framework. A detail object description and data design method is introduced. The application case is given used with framework and compared to the current method and only use the native script. The experiment and detailed case proved the proposed method is effective.
In this paper, Petri nets are used to model the different components of service composition, and form the energy consumption model of service composition based on the relationship between components, Agent is also int...
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ISBN:
(纸本)1891706373
In this paper, Petri nets are used to model the different components of service composition, and form the energy consumption model of service composition based on the relationship between components, Agent is also introduced in the energy consumption management process. Then, an adaptive energy consumption strategy are proposed to dynamically ensure that service composition can get the lowest energy consumption. The operational semantics and related theories of Petri nets help establish the correctness of our proposed method. We have also performed two simulations to evaluate our proposed approach. Results show that it can help reveal the structural and behavioral characteristics of energy consumption in service composition.
The smart city is developed to accessible wider range of interests in difference application. Our focus is quality evaluation on software application of smart city. The paper proposes an evaluation system for smart ci...
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ISBN:
(纸本)9781467381741
The smart city is developed to accessible wider range of interests in difference application. Our focus is quality evaluation on software application of smart city. The paper proposes an evaluation system for smart city, which focus on data, interface and corresponding applications. The specific quality model and related technology are proposed to various quality characters. The evaluator is not only to recognize the quality of application for smart city, but also to define the character to some extent. The quality evaluation has to support the typical software application and prove practicable by studying the specific cases.
The high demand for data analysis and rapid development of big data technology and application has led to a variety of commercial and open source big data processing systems launched by industry and academia. So how t...
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ISBN:
(纸本)9781510819085
The high demand for data analysis and rapid development of big data technology and application has led to a variety of commercial and open source big data processing systems launched by industry and academia. So how to test and evaluate these systems objectively has become an important research topic. In this paper, we propose and develop an automated benchmark testing solution based on TPC-DS for Transwarp Inceptor, a big data analysis system. Test includes generating and loading a 500 GB data set and creating 24 tables and testing the performance of the system and SQL compatibility by executing 99 standard SQL queries. The test results can provide reference for enterprises to compare and choose big data analysis systems.
Web application developers have been bothered about cross-browser compatibility problems caused by different kinds of Web browsers. Existing techniques and tools commonly compare and analyze screenshots of Web sites r...
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ISBN:
(纸本)9781467396431
Web application developers have been bothered about cross-browser compatibility problems caused by different kinds of Web browsers. Existing techniques and tools commonly compare and analyze screenshots of Web sites rendering in different browsers. In this paper, we propose a technique for statically analyzing cross-browser compatibility problems. Our approach can easily detect whether Web applications contain HTML5 incompatible features and generate a report containing the HTML5 incompatible features in the Web site for developers.
We present a formal specification to engineer situated multi-agent Systems (situated MAS), which has revealed the need for specifying and reasoning of its global property. This paper shows how MAS is specified with mo...
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We present a formal specification to engineer situated multi-agent Systems (situated MAS), which has revealed the need for specifying and reasoning of its global property. This paper shows how MAS is specified with modified Object-Z notation with trace semantic of action system, and how to reason about safety and liveness property in this specification. Independent and joint MAS examples are are used to illustrate specifying and reasoning in specification for situated MAS.
As the turnout is a critical part of railway tracks, its surface defects are directly related to the operation safety. The defects detection of turnout is an effect way to ensure the safety and comfort of urban transi...
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ISBN:
(纸本)9781467374439
As the turnout is a critical part of railway tracks, its surface defects are directly related to the operation safety. The defects detection of turnout is an effect way to ensure the safety and comfort of urban transit railway. In this paper, the feature extraction of the turnout defects is investigated based on the bogie acceleration measurements. The normal turnout model and faulty turnout model based on SIMPACK are established first, from which the vehicle vibration acceleration is obtained. Then, the acceleration signal is analyzed in time- frequency domain. The results show that the power spectral density(PSD) and all the frequency-domain features are useful for detecting the poor fit defect of the switch point. And the peak and PSD features can be used to detect the curve opposite super-elevation. The proposed method provides alternative for the detection of turnout defects by using in-service vehicle.
The railway track squat is one of the most dangerous track defects, it causes large dynamic contact force at the wheel-rail interface, leading to fast deterioration of the track, bring significant harm to the safety o...
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ISBN:
(纸本)9781467374439
The railway track squat is one of the most dangerous track defects, it causes large dynamic contact force at the wheel-rail interface, leading to fast deterioration of the track, bring significant harm to the safety of the passengers. Early detection of such defects is very important for timely maintenance. In this paper, a squats detection method based on bogie acceleration(BA) measurement is presented. A simulation model with acceleration sensors is set up in the SIMPACK simulation environment. Time-frequency analysis and wavelet packet decomposition are applied to analyze these BA data obtained from the simulation model. The effectiveness of the above approach is demonstrated by simulation results.
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