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Modeling and analysis of a dual-channel solar thermal storage wall system with phase change material in hot summer and cold winter area

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Building Simulation 2022年第2期15卷 179-196页

作者： Lijie Xu Chenglong Luo Jingyong Cai Jie Ji Leyang Dai Bendong Yu Shengjuan Huang School of Marine Engineering Jimei UniversityXiamen 361021China Institute of Energy Research Jiangxi Academy of SciencesNanchang 330096China College of Energy and Mechanical Engineering Shanghai University of Electric PowerShanghai 200090China Department of Thermal Science and Energy Engineering University of Science and Technology of ChinaHefei 230027China College of Urban Construction Nanjing Tech UniversityNanjing 210009China

A dual-channel solar thermal storage wall system with eutectic phase change material is *** full-day cooling load in summer and heating load in winter can be both decreased by this novel *** investigate the airflow in the dual channel,mixed area assumptions based on the experimental results are *** mathematical models of the system under four work modes are established and verified by the experimental *** average RMSD(root mean square deviation)value is 0.35%in summer and 0.95% in *** analyzing the heat flux,the combination of dual channel and PCM is proven to decrease and delay cooling load both in the daytime and nighttime of *** winter's daytime,the thermal efficiency is promoted by the dual *** in winter’s nighttime,the system is able to heat the room constantly by the PCM *** on parameter researches,the optimum phase change temperature range and the optimum thickness of the PCM are 26-30℃,1.5 cm in summer and 16-22℃,0.6 cm in winter *** reach the optimum annual thermal performance,the coverage area is 2 m^(2) for this system.

关键词： dual-channel phase change material rational assumptions overheating passive heating

The Effect of Money-Back Guarantee and Customer Value on dual-channel Supply Chain

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Journal of Systems Science and Systems Engineering 2019年第5期28卷 636-654页

作者： Limin Wang Qiankun Song Zhenjiang Zhao School of Economics and Management Chongqing Jiaotong University Chongqing 400074 China Department of Mathematics Chongqing Jiaotong University Chongqing 400074 China Department of Mathematics Huzhou University Huzhou 313000 China

This paper investigates the effect of money-back guarantee (MBG) and customer value on dualchannel supply *** could produce and sell old generation product by direct channel to compete with new generation product by retail *** retailer and manufacturer could choose whether implementing the MBG strategy or *** paper discusses whether manufacturer should open the direct channel,how to make MBG strategy to realize maximum profits,and how customer value influences the supply *** give the boundary conditions of four situations about the decisions of retailer and manufacturer GG situation,GN situation,NG situation and NN *** find that MBG strategy by retailer brings higher retail unit price,MBG strategy by manufacturer brings higher direct unit price and influences the wholesale price by the net salvage value of new generation *** paper shows that if the demand was positive,opening the direct channel always benefits the ***,customer value affects demands of two channels and the threshold value of parameter is given in this paper.

关键词： Money-back guarantee customer value dual-channel supply chain product choice

Optimal Pricing Strategies for a Manufacturer and a Value-Adding Retailer in a dual-channel Environment

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Journal of Systems Science and Systems Engineering 2020年第3期29卷 273-290页

作者： Yongwu Zhou Lifang Yang Bin Cao Xiaogang Lin Jinsen Guo School of Business Administration South China University of TechnologyGuangzhou 510641China School of Management Guangdong University of TechnologyGuangzhou 510520China Business School Henan Normal UniversityHenan 453007China

In this paper,we study a supply chain that consists of a manufacturer and a value-adding retailer that sell a product to customers through dual channels,i.e.a traditional channel(TC)and an online channel(OC).Observing that in practice,the manufacturer may or may not offer an OC guide price to the retailer and/or act as the leader in the supply chain,we discuss and compare two practical pricing strategies,with and without an OC guide price,under two different power configurations based on which member of the supply chain acts as the *** results show that if the manufacturer does not provide a guide price,the retailer might/might not set a higher TC price than the two OC prices,depending on the level of migration effectiveness and the potential market ***,if the manufacturer does provide a guide price,the retailer will always charge a higher TC price than the guide price(or the two OC prices)when the retailer acts as the ***,we show that the two players in the supply chain might or might not prefer the pricing strategies with an OC guide *** results also indicate that migration effectiveness harms the retailer's profit,and the manufacturer may benefit from mild competition between the two ***,we show that regardless of whether the manufacturer chooses to offer an OC guide price or not,both the manufacturer and the retailer prefer to act as the follower for high migration effectiveness and the profit of the supply chain will increase when the retailer acts as the leader for low migration effectiveness.

关键词： Supply chain management pricing strategy Stackelberg game dual-channel value-adding

Robust dual-channel correlation algorithm for complex weak target detection with wideband radar

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Journal of Systems Engineering and Electronics 2023年第5期34卷 1130-1146页

作者： DAI Yan LIU Dan LI Chuanming WEI Shaopeng HU Qingrong Beijing Institute of Radio Measurement Beijing 100854China College of Oceanography and Space Informatics China University of Petroleum(East China)Qingdao 257099China Defense Technology Academy of China Aerospace Science and Industry Corporation Limited Beijing 100070China

In the scene of wideband radar,due to the spread of target scattering points,the attitude and angle of view of the target constantly change in the process of *** is difficult to predict,and the actual echo of multiple scattered points is not fully matched with the transmitted ***,it is challenging for the traditional matching filter method to achieve a complete matching effect in wideband echo *** addition,the energy dispersion of complex target echoes is still a problem in radar target detection under broadband ***,this paper proposes a wideband target detection method based on dualchannel correlation processing of range-extended *** method fully uses the spatial distribution characteristics of target scattering points of echo signal and the matching characteristics of the dual-channel point extension function *** radial accumulation of wideband target echo signal in the complex domain is realized through the adaptive correlation processing of a dual-channel echo *** accu-mulation effect of high matching degree is achieved to improve the detection probability and the performance of wideband ***,electromagnetic simulation experiments and measured data verify that the proposed method has the advan-tages of high signal to noise ratio(SNR)gain and high detection probability under low SNR conditions.

关键词： wideband radar target detection dual-channel cor-relation

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FALSE FAILURE RETURNS： OPTIMAL PRICING AND RETURN POLICIES IN A dual-channel SUPPLY CHAIN

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Journal of Systems Science and Systems Engineering 2018年第3期27卷 292-321页

作者： Guojun Ji Shangqing Han Kim HuaTan School of Management Xiamen University 361005 Fujian China Operations Management & Information Systems Division Nottingham University Business School

This paper aim is to examine the optimal pricing and return policies for false failure returns in a dual-channel supply chain. Four prevailing return policies in which a manufacturer both operates an E-shop and sells its product through a brick-and-mortar retailer are analyzed, i.e. （I） the manufacturer handlings E-shop＇s returns, while the retailer addresses brick-and-mortar store＇s returns （NR）; （II） the retailer tackles the whole （both E-shop＇s and brick-and-mortar store＇s） returns （ORR）; （III） the manufacturer tackles the whole returns （ORM）; and （IV） the manufacturer and the retailer are jointly responsible for the whole returns （RRM）. Firstly, the optimal pricing and return policies comparing these four scenarios under uniform-pricing strategy are presented. Our conclusions show that the ORR is an optimal return policy. Compared with the NR, consumers will get a lower product pricing under the ORR and a higher product pricing under the ORM. With regard to the RRM, the product pricing is depended on consumer preference, return-rates of the E-shop and the brick-and-mortar store. Then, the optimal pricing and return policies are analyzed under differential-pricing strategy by conducting two-stage sequential games between the manufacturer and the retailer. The findings show that if consumers in the market prefer to purchase via the E-shop, the ORR is an optimal return policy. Otherwise, the NR is the optimal return policy. Compared with the NR, the ORR retailer＇s product pricing will rely on the retailer＇s and the manufacturer＇s return-costs; the RRM retailer＇s product pricing will depend on the return-costs of the retailer and the manufacturer, the return-rates of the E-shop and the brick-and-mortar store and so on. Finally, the influences of the manufacturer and the retailer establishing a Buy-back contract are discussed. Our results illustrated that the Buy-back contract doesn＇t affect optimal pricing and return policies under both the uniform and the differen

关键词： dual-channel optimal return policy optimal pricing false failure returns game theory

Pricing Decisions in dual-channel Closed-Loop Supply Chain Under Retailer’s Risk Aversion and Fairness Concerns

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Journal of the Operations Research Society of China 2021年第3期9卷 641-657页

作者： Chun-Fa Li Xue-Qing Guo Dong-Lei Du Department of Management Tianjin University of TechnologyTianjin 300384China Faculty of Management University of New BrunswickFrederictonNB E3B 5A3Canada

This paper studies the price decisions in a dual-channel closed-loop supply chain with a risk-averse retailer and a risk-neutral manufacturer by modeling and analyzing three cases:(1)the retailer does not have fairness concerns;(2)the retailer has fairness concerns and the manufacturer considers it;and(3)the retailer has fairness concerns and the manufacturer does not consider *** effects of risk aversion and fairness concerns on the pricing decisions,profits and demand are examined in differing scenarios.

关键词： Risk aversion Fairness concerns dual-channel Closed-loop supply chain

Vibration target detection and vibration parameters estimation based on the DPCA technique in dual-channel SAR

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Science China(Information Sciences) 2012年第10期55卷 2281-2291页

作者： CHEN YingBin 1,2,DENG Bin 1,WANG HongQiang 1,QIN YuLiang 1 & DING JinCan 1 1 Department of Electronic Science and Engineering,National University of Defense Technology,Changsha 410073,China 2 The Chinese People's Liberation Army 61336 Unit,Beijing 100094,China 1. Department of Electronic Science and Engineering National University of Defense Technology Changsha 410073 China2. The Chinese People’s Liberation Army 61336 Unit Beijing 100094 China

This paper proposes a new method based on the displaced phase center antenna(DPCA) technique for the detection and parameters estimation of vibration target in dual-channel synthetic aperture radar(SAR).The echo model of vibration target is established in dual-channel SAR according to the equivalent phase center *** accumulating the DPCA signal amplitude in the azimuth direction,we realize the vibration target detection in clutter and noise *** the analysis of DPCA signal amplitude and phase characteristics of vibration target,we then convert the vibration parameters estimation to estimation of a signal with the form of absolute value of a sine function,and the converting conditions is also ***,an algorithm combining the Fourier transform with least squares is proposed for *** simulation results show that the algorithm can estimate each vibration parameter precisely at a low signal-to-noise ratio.

关键词： displaced phase center antenna vibration dual-channel detection parameters estimation

dual-channel redox reactions for photocatalytic H_(2)-evolution coupled with photoreforming oxidation of waste materials

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Chinese Journal of Catalysis 2024年第10期65卷 1-39页

作者： Huan Liu Shaoxiong He Jiafu Qu Yahui Cai Xiaogang Yang Chang Ming Li Jundie Hu School of Materials Science and Engineering Suzhou University of Science and TechnologySuzhou 215009JiangsuChina Department of Chemical and Biomolecular Engineering National University of SingaporeSingapore 117585Singapore College of Materials Science and Engineering Nanjing Forestry UniversityNanjing 210037JiangsuChina

dual-channel redox reaction system is advantageous for photocatalytic hydrogen(H_(2))production when coupled with photoreforming oxidation of waste materials,benefiting both thermodynamically and ***,existing reviews primarily focus on specific oxidation reactions,such as oxidative organic synthesis and water remediation,often neglecting recent advancements in plastic upgrading,biomass conversion,and H_(2)O_(2)production,and failing to provide an in-depth discussion of catalytic *** review addresses these gaps by offering a comprehensive overview of recent advancements in dual-channel redox reactions for photocatalytic H_(2)-evolution and waste *** highlights waste-to-wealth design concepts,examines the challenges,advantages and diverse applications of dual-channel photocatalytic reactions,including photoreforming of biomass,alcohol,amine,plastic waste,organic pollutants,and H_(2)O_(2)*** improvement strategies and exploration of catalytic mechanisms,it includes advanced in-situ characterization,spin capture experiments,and DFT *** identifying challenges and future directions in this field,this review provides valuable insights for designing innovative dual-channel photocatalytic systems.

关键词： Photocatalysis dual-channel Hydrogen evolution Photoreforming oxidation In situ characterization

The Influence of Third-party E-Commerce Platform Price Limits on the dual-channel Strategy of Manufacturers

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Journal of Systems Science and Information 2019年第2期10卷 173-186页

作者： Cong WANG Huifang YANG Deli YANG Shipping Economics and Management College Dalian Maritime UniversityDalian 116024China Faculty of Management and Economics Dalian University of TechnologyDalian 116024China

Powerful platform operators always set price limits for sellers on the platform. This paper establishes Stackelberg game models according to two pricing models when the manufacturer enters the third-party e-commerce platform and sells products online. The first is a seller-pricing model in which the manufacturer decides the online price. The second is a platform-pricing model in which the platform decides the online price. We obtain the equilibrium results for these two models and the condition that allows the manufacturer to adopt the dual-channel strategy by comparing the operation decisions and performance of supply-chain members in the two models. Results show that the dual-channel strategy of the manufacturer always decreases the profit of the traditional retailer. In comparison with the sellerpricing model, the platform-pricing model always erodes parts of the manufacturers profit obtained by the dual-channel strategy. The manufacturer will pass on the partial loss to the retailer using relative leadership in the platform-pricing model, which renders the profit of the retailer lower than that in the seller-pricing model. Also, price limits do not always bring the platform more profits;sometimes the platform is forced to set a low price.

关键词： third-party platform price cap the manufacturer dual-channel strategy

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