198 research outputs found

    The Extension of Dual-channel Supply Chain Model Based on Strategic Customer WTP

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    电子商务和物流业的快速发展增加了顾客购物的便利性,很多制造商会在传统零售渠道的基础上,增加电子渠道来迎合顾客购物足不出户的愿望,节约了顾客的时间,大大提高了交易的效率,比如苹果、三星、海尔、联想等都采用传统渠道与电子渠道相结合的销售方式。电子渠道不仅吸引了制造商,也吸引了传统零售商,从而形成产品多渠道销售的模式。同时顾客也在多渠道中权衡利弊,做出最有利于自身的购买选择。本论文以双渠道供应链的战略顾客选择模型为基础,分别在顾客类型、销售时期、产品类型、销售渠道四个方面进行扩展,综合应用顾客剩余效用分析法、博弈论和计算实验等方法,得到了一系列理论结论和数值计算结果。本论文主要的研究内容如下: 首...The rapid development of electronic commerce and logistics industry brings customers more convenience. Keeping the traditional retail channel, many manufacturers open the electronic channel to meet customers’ wish of shopping without leaving home, which can save time and improve trade efficiency greatly. Companies such as Apple, Samsung, Haier and Lenovo all adopt the combination of traditional re...学位:管理学博士院系专业:管理学院_管理科学与工程学号:1772012015340

    Analysis of Purchase Behaviorand Optimal Strategy Based on Many Types of Customers

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    研究在分散决策和集中决策下,制造商和零售商的最优产品定价策略,以及顾客比例对最优定价的影响;通过数值分析的方法研究顾客比例对利润函数的影响,研究表明:分散决策下,如果战略顾客无差别对待渠道产品,制造商会建立自营的专卖店和自营的网络平台销售产品;无论是采用分散决策还是集中决策,战略顾客的比例较少时,产品定价会较高,而且对零售商越有利。This paper discusses the optimal pricing strategy in decentralizedand centralized dual-channel supply chains,and analyzes the influence of customer ratios on the optimal pricing and profit functions. Results show that the manufacturer will establish self-support stores and network platform to sell products in decentralized supply chain,if the strategic customers hold the products between retail channel and electronic channel are no difference. Whether decentralized decision or centralized decision,the less the ratio of strategic customers,the higher the product pricing,and more favorable for retailer.国家自然科学基金项目(71571151;71371159);; 国家社会科学重点基金项目(14AGL015

    Study on the Agent-based Supply Chain Partner Selection

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    全球化网络经济的发展使得经济和信息技术越来越密不可分。地理位置分散的供应链中节点企业通过信息技术相连接的特征越来越明显。人工智能Agent技术的发展进一步推进了对供应链中企业之间相互合作的研究。将人工智能技术应用在供应链企业的协商与合作中,可以来解决供应链建模和优化问题,为供应链管理的发展提供了新的方向。 本文首先介绍了合作伙伴选择的相关理论,对相关领域的理论文献进行了总结。详述了合作伙伴选择过程中经常使用的选择方法。介绍了Agent的定义和特征,重点介绍了Agent的BDI模型理论,总结了相关文献,最后介绍了MAS的概念和结构,以及基于Multi-Agent的协商模型的研究现状。 其次,...The development of the global network economy makes the economy and information technology more and more inseparable. The enterprises of supply chain are dispersed geographically. The trend of using information technology to connect is increasingly obvious. The development of artificial intelligence technology promotes the mutual cooperation between enterprises in the supply chain. In the dynamic ...学位:管理学硕士院系专业:管理学院管理科学系_管理科学与工程学号:1772009115094

    Application in the Value at risk with the rare event simulation techniques

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    虽然金融危机已经离我们渐渐远去,但是它对国内外经济的影响却并没有因此减弱。多数企业公司甚至某些行业在发展中都面临着巨大的风险。而风险价值作为衡量风险的一个重要指标,被各个公司所重视,因此对风险价值研究的重要性不言而喻。但从国内外的研究来看,大多数仍旧在风险因子服从正态分布的假设之下,从而使得对与实际更为相符的具有厚尾现象的风险因子的研究相对不多,与之相应的处理方法也比较少。所以在风险因子具有厚尾特点的情况下,对投资组合风险价值的研究具有切实的意义。 本文根据国内外相关的文献,首先对风险价值的概念、计算方法等给出了简要的阐述,然后又给出了稀疏事件和重要性抽样技术以及分层抽样的理论介绍,而且依据...Although the financial crisis has faded away from us, its effect on the economy has not shaken off on the global. Most of companies are facing huge risk in the development, even some business. Every company pays much attention to the value-at-risk which is the criterion of its risk. It is obvious that studying the value-at-risk is very important. But from the view of the global, most of the resear...学位:应用统计硕士院系专业:经济学院_统计学学号:1542011115192

    DETERMINATION METHOD OF LIMIT EQUILIBRIUM STATE AND CRITICAL SLIP SURFACE OF SOIL SLOPE

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    开展边坡失稳判据及临界滑动面确定方法的理论与数值实现研究。应用分叉理论的研究成果,证明满足关联流动法则的理想弹塑性材料,在平面应力或平面应变条件下的失稳模式为应变局部化模式,由此类材料构成的边坡模型的失稳过程为局部带渐进扩展过程。基于以上证明,提出局部化带贯通判据,认为表征边坡整体失稳的充要条件是局部化带在边坡内部的完全贯通。基于数值模拟,发展一种局部化带路径追踪技术,根据每个增量时步土体单元的局部化状态信息,通过后处理显式追踪局部化带的形成、扩展、汇合直至贯通的过程,直观、方便地判断边坡的极限平衡状态,同时确定临界滑动面的位置。并开展强度折减和位移加载算例研究,验证局部化带贯通判据及数值实现方法的适用性

    低碳经济下碳税对供应链减排及合作策略的影响分析

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    在低碳经济下,以由低碳制造商、普通制造商和零售商组成的供应链作为研究对象,考虑了无碳税和有碳税两种情形,分析了分散决策和集中决策两种情况下供应链减排决策及合作策略,研究发现,在分散决策的情况下,碳税税率应该设置在一个合理分范围内,这样才能够充分调动低碳制造商减排的积极性,碳税如果设置过高,增加了企业的经营负担,并没有起到减排的作用,但是在集中决策下,碳税越高越能促进企业减排;同时还发现集中决策能够有效地提高供应链利润,因此需要设计一定约束机制来保证供应链各企业能够按照集中决策的方式来进行决策,并分析得出了合作机制。最后使用算例分析的方法分析了相关参数对供应链最优决策的影响。福建省社会科学规划项目“碳税规制下供应链减排合作策略研究”(FJ2017C014);;福建省自然科学基金项目“碳排约束下的可持续产品设计及其技术选择策略研究”(2018J05117);;山东省自然科学基金青年项目“基于产品多样性的战略顾客选择购买渠道研究”(ZR2017BG017

    ON THE REVIVAL OF RURAL CHARACTERISTIC INDUSTRY IN ARCHITECTURAL CONTEXT: A CASE STUDY OF ZI'NI TOWN IN LONGHAI

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    抛开产业经济这个基础,流于建筑形式的“乡村复兴”只是空壳。本文从产业复兴的视角出发,以龙海市紫泥镇蘑菇产业为研究案例,结合当地废弃蘑菇房的改造与再利用,论述如何利用现有的空间形式和建筑手法,从生产、加工、经营等方面进行产业复兴,从而再现乡村活力。The "rural revival" of an architectural formality is only an empty shell, when it puts aside the industrial economy. From the perspective of industrial revival, this paper takes the mushroom industry of Zi'ni town in Longhai as the research case, combining with the transformation and re-use of the local abandoned mushroom breeding room and discusses how to use the existing forms of space and architectural practices from the aspects of production, processing and management to carry out the industrial revival, so as to reproduce the vitality of the village

    应用型和复合型研究生的教学改革研究——以资产评估专业为例

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    随着供给侧改革的推行和《资产评估估法》的实施,社会各界越来越关注资产评估专业应用性和复合型研究生人才的培养。在分析资产评估研究生培养现状基础上,结合东北财经大学资产评估研究生教学经验,从培养目标与培养方案、教师队伍建设、教学案例完善和硬软件设施等方面提出研究生教学改革的解决对策。东北财经大学研究生教学改革研究项目最终成果,项目名称:国际化应用型和复合型研究生的教学改革研究——以资产评估专业为例,项目编号:yjyb20171

    Preparation of monoclonal antibodies against 3D protein of EV71 based on HBc particles as expression vector

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    目的:预测肠道病毒71型(EV71)非结构蛋白3D的表位,以HBc蛋白为载体展示多肽,制备并鉴定抗EV71-3D的特异性单克隆抗体(mAb); 。方法:应用生物信息学方法分析预测出EV71; 3D蛋白亲水性和免疫原性指数较高的多肽片段,并运用HBc颗粒型蛋白载体展示肽段,构建多肽融合蛋白,免疫BALB/c雌鼠,通过杂交瘤技术和亲和层析; 技术制备和纯化抗EV71-3D蛋白的特异性mAb,用间接ELISA、ELISPOT、IFA和IHC对mAb的性质进行初步鉴定。结果:构建表达分别; 嵌合3D蛋白34~ 43位氨基酸残基、61~ 76位氨基酸残基、151~; 164位氨基酸残基的HBc重组蛋白,免疫并经过多轮克隆化筛选,获得抗EV71-3D单克隆抗体3E1,其亚类为IgG2a;免疫荧光试验、ELISP; OT法和免疫组织化学染色结果显示其可与EV71特异性结合。结论:成功制备可特异性识别EV71的单克隆抗体3E1,为病毒的检测及进一步研究3D蛋白; 的功能奠定了基础,同时还验证了生物信息学技术与HBc颗粒型载体展示多肽技术相结合可快速高效地制备单克隆抗体。Objective: To prepare and preliminarily identify the monoclonal; antibodies(mAbs) specifically against 3D protein of Enterovirus; 71(EV71),using bioinformatics to predict the epitopes of 3D,with HBc; protein as a carrier.Methods: Artificial screening of 3D protein epitope; sequences by bioinformatic method,inserted into the major immunodominant; region(MIR) area of Hepatitis B virus core protein(HBc),to construct the; recombinant protein.BALB/c mice were immunized with the recombinant; virus like particles(VLPs),to prepare the mAbs against 3D protein of; EV71.Affinity chromatography technology was used to purify the mAb.The; indirect ELISA,ELISPOT,immunofluorescence and immunohistochemistry; staining methods were used to identify the characteristic of the; mAb.Results: We displayed 3D(aa34-43),3D(aa61-76) and 3D(aa151-164); epitopes by constructing fusion protein using HBc VLPs as a vector,after; hybridization,one positive hybridoma cell line(3E1) was selected by; ELISA.The isotype of 3E1 was IgG2a.The results of immunofluorescence and; immunohistochemistry staining assay showed that the mAb 3E1 could; specifically recognize EV71.Conclusion: The prepared mAb 3E1 can; specifically recognizes the EV71,which laid the foundation for the; detection of virus and further study on 3D protein,and verified the; bioinformatics technology combined with HBc carrier displaying peptides; could prepare mAb quickly and efficiently.国家自然科学基金项

    适用于直流配电网故障选线的电力电子变压器分步闭锁方案

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    级联H桥型电力电子变压器(power electronic transformer with cascaded H-bridge,CHB-PET)是柔性变电站的重要组成设备之一,在直流配电网中具有重要作用。当CHB-PET低压直流侧发生双极短路故障后,故障电流上升速度快且幅值较高,易导致电力电子器件迅速闭锁,使低压直流电网保护难以准确获取故障信息。针对CHB-PET低压侧多分支直流配电网,提出一种基于PET分步闭锁的故障穿越策略。当检测到PET低压侧直流系统故障后,首先闭锁PET输入级及隔离级的低压H桥换流器,延迟3 ms后再闭锁隔离级的高压H桥换流器,分步闭锁可为PET低压侧多分支线路保护提供短时故障信息,进而可利用分支线路两端电流极性特征识别区内外故障,定位故障分支线路。最后,通过PSCAD/EMTDC仿真实验,验证了适用于直流配电网故障选线的电力电子变压器分步闭锁方案的可行性和有效性
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