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Multi-criteria decision-making approach with incomplete certain information based on ternary AHP

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Journal of Systems Engineering and Electronics 2006年第1期17卷 109-114页

作者： wang jianqiang School of Business Central South Univ. Changsha 410083 P. R. China

It is not uncommon in multiple criteria decision-making that the numerical values of alternatives of some criteria are subject to imprecision, uncertainty and indetermination and the information on weights of criteria is incomplete certain. A new multiple criteria decision- making method with incomplete certain information based on ternary AHP is proposed. This improves on Takeda＇s method. In this method, the ternary comparison matrix of the alternatives under each pseudo-criteria is constructed, the eigenvector associated with the maximum eigenvalue of the ternary comparison matrix is attained as to normalize priority vector of the alternatives, then the order of alternatives is obtained by solving two kinds of linear programming problems. Finally, an example is given to show the feasibility and effectiveness of the method.

关键词： multi-criteria decision-making incomplete certain information pesudo-eriteria ternary AHP linear programming.

Multi-criteria linguistic interval group decision-making approach

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Journal of Systems Engineering and Electronics 2008年第5期19卷 934-938页

作者： wang jianqiang ChenXiaohong School of Business Central South Univ. Changsha 410083 P. R. China

For group decision-making problems with linguistic assessment information, a new method based on two-tuple and WC-OWA operator is proposed, in which the criteria＇s weights and the decision-makers＇ preference information might take the form of linguistic grade, or might be between two continuous linguistic grades, or might be linguistic interval, or might be default. In this method, all linguistic values are transformed into two-tuple, and an aggregative decision-making matrix is obtained by using interval operation. The group aggregative values of each criterion on alternatives are computed by using a WC-OWA operator, the aggregative values on alternatives are worked out, and transformed into two-tuple. And the rank of the alternatives is obtained by using the order property of two-tuple. An example shows the feasibility and effectiveness of the proposed method.

关键词： multi-criteria decision making group decision-making two-tuple linguistic interval WC-OWA operator.

Multi-criteria classification approach with polynomial aggregation function and incomplete certain information

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Journal of Systems Engineering and Electronics 2006年第3期17卷 546-550页

作者： wang jianqiang School of Business Central South Univ. Changsha 410083 P. R. China

The relationship between the importance of criterion and the criterion aggregation function is discussed, criterion＇s weight and combinational weights between some criteria are defined, and a multi-criteria classification method with incomplete certain information and polynomial aggregation function is proposed. First, linear programming is constructed by classification to reference alternative set （assignment examples） and incomplete certain information on criterion＇s weights. Then the coefficient of the polynomial aggregation function and thresholds of categories are gained by solving the linear programming. And the consistency index of alternatives is obtained, the classification of the alternatives is achieved. The certain criteria＇s values of categories and uncertain criteria＇s values of categories are discussed in the method. Finally, an example shows the feasibility and availability of this method.

关键词： multi-criteria decision-making incomplete certain information polynomial function classification.

Aggregation operators on intuitionistic trapezoidal fuzzy number and its application to multi-criteria decision making problems

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Journal of Systems Engineering and Electronics 2009年第2期20卷 321-326页

作者： wang jianqiang Zhang Zhong School of Business Central South Univ. Changsha 410083 P. R. China

Intuitionistic trapezoidal fuzzy numbers and their operational laws are defined. Based on these operational laws, some aggregation operators, including intuitionistic trapezoidal fuzzy weighted arithmetic averaging operator and weighted geometric averaging operator are proposed. Expected values, score function, and accuracy function of intuitionitsic trapezoidal fuzzy numbers are defined. Based on these, a kind of intuitionistic trapezoidal fuzzy multi-criteria decision making method is proposed. By using these aggregation operators, criteria values are aggregated and integrated intuitionistic trapezoidal fuzzy numbers of alternatives are attained. By comparing score function and accuracy function values of integrated fuzzy numbers, a ranking of the whole alternative set can be attained. An example is given to show the feasibility and availability of the method.

关键词： intuitionistic trapezoidal fuzzy numbers aggregation operators multi-criteria decision making

Promotional effect of ion-exchanged K on the low-temperature hydrothermal stability of Cu/SAPO-34 and its synergic application with Fe/Beta catalysts

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Frontiers of Environmental Science & Engineering 2021年第2期15卷 141-153页

作者： Chen wang Jun wang jianqiang wang Meiqing Shen School of Chemical Engineering&Technology Key Laboratory for Green Chemical Technology of State Education MinistryTianjin UniversityTianjin 300072China School of Environment and Safety Engineering North University of ChinaTaiyuan 030051China

K ions were introduced onto Cu/SAPO-34 catalysts via the ion-exchange process in order to improve their stability under low-temperature hydrothermal *** changes in structure and copper-species contents of these catalysts upon hydrothermal aging were probed in order to investigate their effects on selective catalytic reduction(SCR)*** the fresh Cu/SAPO-34 catalysts,K ions had little influence on the chabazite framework but effected their acidities by exchanging with acid *** hydrothermal aging,the structural integrity and amount of active sites decreased on pure Cu/*** the K-loaded catalysts showed improved chabazite structure,acidity,and active site conservation with increasing K ***,although the 0.7 wt%K catalyst maintained the same crystallinity,active site abundance,and low-temperature SCR activity as the fresh catalyst upon aging,an apparent decrease in SCR activity at high temperature was observed because of the inevitable decrease in the number of Brönsted acid *** compensate for the activity disadvantage of K-loaded Cu/SAPO-34 at high temperature,Fe/Beta catalysts were co-employed with K-loaded Cu/SAPO-34,and a wide active temperature window of SCR activity was ***,our study reveals that a combined system comprising Fe/Beta and K-loaded Cu/SAPO-34 catalysts shows promise for the elimination of NOx in real-world applications.

关键词： Selective catalytic reduction Cu/SAPO-34 catalyst Ion-exchanged K Low-temperature hydrothermal stability Fe/Beta catalyst

An innovative graphene-based phase change composite constructed by syneresis with high thermal conductivity for efficient solar-thermal conversion and storage

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Journal of Materials Science & Technology 2024年第11期178卷 179-187页

作者： jianqiang wang Weijie Li Xinya Zhang School of Chemistry and Chemical Engineering Guangdong Provincial Key Lab of Green Chemical Product TechnologySouth China University of TechnologyGuangzhou 510640China

Graphene-based phase change composites hold significant potential for solar energy utilization,but their poor thermal conductivity hinders their practical *** this work,an air-dried graphene skele-ton(AGS)with excellent thermal conductivity enhancement efficiency was constructed by the ice tem-plating method and syneresis,and the air-dried graphene phase change composite(AGP)was subse-quently obtained through vacuum-impregnating n-Docosane(C22)into *** syneresis effectively re-duced the phonon scattering between graphene sheets within AGS and increased the density of AGS to 0.1701 g/***,with a graphene skeleton loading of 23.82 wt.%,AGP exhibited excellent thermal conductivity of 9.867 W/(m K),outstanding electrical conductivity of 68.08 S/cm,and remarkable shape ***,AGP demonstrated a melting enthalpy of 188.5 J/g and an outstanding solar-thermal conversion efficiency of 93.98%,showing enormous potential for the utilization of solar energy.

关键词： Syneresis Graphene skeletons Thermal conductivities Phase change composites Solar-thermal conversion

Nature of cerium on improving low-temperature hydrothermal stability of SAPO-34

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Journal of Rare Earths 2021年第5期39卷 548-557页

作者： Qingyun wang Meiqing Shen jianqiang wang Chen wang Jun wang Key Laboratory for Green Chemical Technology of State Education Ministry School of Chemical Engineering and TechnologyTianjin UniversityTianjin 300350China Collaborative Innovation Center of Chemical Science and Engineering(Tianjin) Tianjin 300350China State Key Laboratory of Engines Tianjin UniversityTianjin 300350China School of Environment and Safety Engineering North University of ChinaTaiyuan 030051China

To probe the function of Ce on enhancing low-temperature stability of SAPO-34,Ce/SAPO-34 with different Ce contents was prepared via one-pot method and further treated at 70℃in 80%relative humidity for 24 *** structural results prove that the one-pot synthesis is an effective way to introduce Ce(Ce<0.325 wt%)without influencing micro-structural and chemical *** lowtemperature hydrothermal stability of Ce/SAPO-34 is enhanced by Ce *** than 92%CHA structure and total acidity are maintained over 0.188 wt%Ce/SAPO-34,while only about 20%of that left on pure H/*** Ce exists as Ce^(3+)at exchange sites on the surface of SAPO-34,the results of the linear relationship between protected surface acidity and structure/acidity conservation manifest that Ce^(3+))effectively hinders the structural *** study provides new insight into surface acidity protection for solving the problem of low-temperature hydrothermal stability of SAPO-34.

关键词： SAPO-34 Cerium ions Low-temperature hydrothermal stability Surface acidity Protection mechanism Rare earths

Modeling and simulation of network traffic flow evolution based on incomplete information feedback strategies in the ATIS environment

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International Journal of Modeling, Simulation, and Scientific Computing 2017年第3期8卷 195-209页

作者： jianqiang wang Shiwei Li School of Traffic and Transportation Lanzhou Jiaotong University Lanzhou 730070 P.R.China

Considering both the high complexity of urban traffic flow systems and the bounded rationality of travelers,providing traffic information to all travelers is an effective method to induce each individual to make a more rational route-choice *** Advanced Traveler Information System(ATIS)working environment,temporal and spatial evolution processes of traffic flow in urban road networks are closely related to strategies of providing traffic information and contents of *** view of the day-to-day route-choice situations,this study constructs original updating models of the cognitive travel time of travelers under four conditions,including not providing any route travel time,only providing the most rapid route travel time,only providing the most congested route travel time,and providing all the routes travel *** disaggregate route-choice approach is adopted for simulation to reveal the relationship between the evolution process of network traffic flow and the strategy of providing traffic *** simulation shows that providing traffic information to all travelers cannot improve the operational efficiency of road *** is noteworthy that an inappropriate information feedback strategy would lead to intense variation in various routes traffic *** with incomplete information feedback strategies,it is inefficient and superfluous to provide complete traffic information to all travelers.

关键词： Traffic flow evolution route-choice road network incomplete information intelligent agent simulation

Basical characteristics of fluid geologic process of interlayer oxidation zone sandstone-typeuranium deposit

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Science China Earth Sciences 2007年第z2期50卷 185-194页

作者： WU BoLin LIU ChiYang wang jianqiang State Key Laboratory of Continental Dynamics(Northwest University) Xi'an 710069 China State Key Laboratory of Continental Dynamics(Northwest University) Xi'an 710069 China State Key Laboratory of Continental Dynamics(Northwest University) Xi'an 710069 China

This paper reveals the physicochemical properties such as component, formulation, genesis, tem- perature, pH, Eh, salinity and pressure of all main alteration fluid of interlayer oxidation zone sand- stone-type uranium deposits after studying the geologic process and geochemistry of internal typical sandstone-type uranium deposits such as Shihongtan deposit in the Turpan-Hami basin, 512 deposit in the Yili basin, Dongsheng deposit in the Ordos basin. The composition of fluid can be divided into two parts based on the analysis of inclusion: one can be affirmed as atmospheric water with ordinary temperature epigenesist according to the character of hydrogen and oxygen isotope of inclusion, the other is natural gas containing gaseous hydrocarbon like CH4, and CO2 as well as a little H2S, CO, H2, N2 and so on, it always contains a small quantity of hydrocarbon liquid in petroliferous basins. The fluid property of oxidation alteration zone is always oxidation alkaline, and neutrality or weak acid-weak alkaline and reducibility during the metallizing process, but at secondary reduction or deoxidization zone it becomes strong reduction alkaline. Oxygenic groundwater in the fluid is the activate and mig- ratory medium of uranium element, but the gaseous hydrocarbon like CH4 as well as H2, H2S, CO from natural gas is the important sedimentary reducer of uranium mineral; the transformation of pH,Eh in fluid environment is the main reason for the formation of uranium metallization.

关键词： fluid, interlayer oxidation zone, uranium deposit, inclusion, isotope