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In systems with two maximum azeotropes, different volatility orders can be obtained according to different isovolatility line. In this paper, the volatility orders of systems with two maximum azeotropes are identified according to the rigorous simulation of Aspen Plus, and are compared with that identified according to the isovolatility lines. The results show that, there are two distillation regions...
This paper considered complex weapon system reliability optimization allocation. Firstly, according to the restrictions like cost and quality of the system, this paper constructed the optimization model of reliability redundancy allocation of weapon system with the system reliability as objective function. Secondly, this paper proposed a numerical solving algorithm of Generalized Lagrange multipliers...
Data for automated manufacturing systems becomes more and more available in digital form. But still it may not be reused throughout all levels of a factory and during the complete life cycle of such systems because of various different machine readable formats and no formalized semantics of the data. Misinterpretations of the data result in inconsistencies, redundancies and a lot of inefficient work...
Building design is normally in relation to the interaction and compatibility of group and individual goals and value judgments. The members' roles in a group fluctuate in importance and priority from one phase to another, which is fundamentally different from the corresponding process in unidisciplinary groups. In performing the design activities, the general trend is for these members to work independently...
The space radiation environment introduces multiple kinds of faults on devices used for space application. Advantages and shortages of ASIC and FPGA are compared based on different radiation effects. Most advanced and classical techniques for radiation tolerance adopted on both ASICs and FPGAs are discussed, including Triple Modular Redundancy (TMR), Hardened Memory Cells, Error Detection and Correction...
The dependency function proposed in the rough set model and fuzzy rough set model is widely employed in feature evaluation and attribute reduction. It is shown that the relations between fuzzy memberships haven't used in the function. We introduce the concept of fuzzy similarity measure and propose a new model in evaluating feature dependency. The properties of the model were discussed. Experimental...
This paper proposes a new routing protocol, namely Optimal Routing in Multi-sink Sensor Networks based on Fuzzy Comprehensive Evaluation (ORFCE). The protocol applies fuzzy comprehensive evaluation with selecting optimal routing in multi-sink sensor networks by considering three factors, the least residual energy in path, the least average link quality in path, and hop counts from sensor to sink....
When Existed Web Services can't meet the requirement of server consumer, a failure will occur. To solve the problem, this paper proposes an adaptive selection model for Web Services selection model. The model can calculate the strength of user's constraints, and tentatively modify the constraints. The model can select the most appropriate Web Services for services consumer, and improved the success...
In safety critical area, even the slightest error of the operating system could lead to a significant property damage or casualties. As a result, the safety of the RTOS (Real Time Operating System) must be improved. Rushby etc. have done lots of research on safety kernel. Multi-core processor is developing rapidly. This paper presents that the safety of real time system can be improved with a multi-core...
The safety assessment of thermal control system is an essential component of safety evaluation of the whole thermal power plant. The index system for safety assessment was constructed, and methods of deciding initial weights for each factor of the index system were presented. In order to strengthen the influence resulted from small faults factors on the overall safety evaluation a variable weight...
Firstly, this paper presents a concept of WEB service-based virtual value net (WSVVN) in consideration of change of application environment for value net. Secondly, it gives a definition of value model for WSVVN, and makes an analysis on actions of member enterprises under this value model. In order to make a value analysis on business process of enterprise, this paper conducts expansion of basic...
Designed and implemented a campus environment IPV6 network information monitoring system, the use of network monitoring technology, the fixed network node through the network packet capture and network protocol model according to the packet layer by layer analysis, data extraction and analysis, found that harmful information and privacy of confidential information, raise the alarm to the administrator,...
I am delighted to welcome you to the 2011 International Conference on System science, Engineering design and Manufacturing informatization (ICSEM 2011) which was held in Guiyang, China from 22 October to 23 October, 2011. The theme of the plenary session is “system science, engineering design and manufacturing informatization” featuring invited speakers who will further explore this topic that is...
Based on System Dynamics methodology, this paper analyzes the characters of eco-city and structure of the system comprehensively and constructs a system dynamics model of eco-city. The model simulates the flow and circulation of material, energy and information in Eco-city system which is composed of population, economy, resource and environment subsystems. Using system dynamics software Vensim PLE,...
In order to effectively improve the heat utilization of solar energy, by the convection heat transfer field synergy theory, this paper studies a solar wall air heating system, analysis the flow velocity field and temperature field of the solar wall channel, and calculation the variation rules of temperature gradient direction within the channel and air flow velocity (speed ratio) with the field synergy...
IT Project selection is a multi-criteria decision-making (MCDM) problem. The key process of IT project selection is the assessment criteria framework establishment and criteria weight evaluation. Several criteria should be included into the judging system, and the complexity of multi-criteria judgment could even increase if relationships among selection criteria are taken into consideration. A method...
Cutting stock is concerned with how to saving material, optimize resources in product designing, manufacturing. It is very complicated and difficult in computing theory, but it has got the extensive application in the actual manufacture. In this paper, genetic algorithm optimization of two-dimensional sheet metal nesting design, genetic algorithm is a numerical method for global optimization. Compared...
Aiming at the complex nonlinear system, a PID self-adaptive control method based on the DE algorithm is stated in the paper. Based on on-line optimization of PID controller parameters by the DE algorithm, the desirable control effect is obtained. An application of this method to the control of the continuous Stirred Tank Reactor (CSTR) system which is a complex nonlinear system is studied. Simulation...
This paper considered complex weapon system reliability optimization allocation. Firstly, according to the restrictions like cost and quality of the system, this paper constructed the optimization model of reliability redundancy allocation of weapon system with the system reliability as objective function. Secondly, this paper proposed a numerical solving algorithm based on heuristic method. This...
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