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Search Results: 1 - 10 of 96315 matches for " 简惠云XU Minli "
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风险规避下基于Stackelberg博弈与Nash讨价还价博弈的供应链契约比较
Comparison of Supply Chain Contracts Based on Stackelberg Game and Nash bargaining Model with the Assumption of Risk Aversion

,许民利
JIAN Huiyun
,XU Minli

- , 2016,
Abstract: 摘要 以批发价契约与回购契约为例,分析与比较风险规避型供应链分别采取Stackelberg博弈和Nash讨价还价博弈时的最优化决策,探讨供应链主导方如何根据合作伙伴的风险规避水平选择契约与博弈机制。研究表明,当零售商与供应商风险规避水平相同时,供应链的最优选择是采用Nash讨价还价博弈的批发价契约或者回购契约,二者等价;当零售商与供应商风险规避水平比较接近时,采用Nash讨价还价博弈下的回购契约要优于相同博弈机制下的批发价契约;当零售商与供应商风险规避水平相差较大时,供应商不会选择Nash讨价还价博弈下的任一契约,而是选择Stackelberg博弈下的回购契约。与风险中性假设下的结论相比,风险规避下的研究结论更符合供应链管理实践
考虑品牌优势和成本差异的再制造决策
Remanufacturing Decision Based on Brand Advantage and Cost Difference

许民利,张璇,
XU Minli
,ZHANG Xuan,JIAN Huiyun

- , 2016,
Abstract: 摘要 考虑消费者对新产品和再制造产品的不同偏好,以及原制造商(OEM)的品牌优势,利用博弈论研究3种情形下的生产决策,分析OEM授权或自行再制造应满足的条件。研究结果表明,在不同竞争环境下,OEM产品和第三方再制造产品的最优定价和最优产量受双方的生产成本、消费者对再制造产品的认知及OEM品牌优势的影响。OEM品牌优势越小、第三方的再制造成本越低、OEM再制造的成本越高,以及消费者对再制造产品的认知越高,更愿意授权;而第三方再制造商只有在获得授权后所节约的成本超过某临界值时,才会愿意接受OEM授权。OEM的品牌优势越大、消费者对再制造产品的认知较低时,第三方再制造商更愿意接受OEM授权。OEM只有在自己再制造的成本较低且有利润时才愿意生产再制造产品,其品牌优势越高、消费者对再制造产品的认知越高,以及第三方再制造成本越高,OEM更愿意自行生产再制造产品
基于消费者选择偏好的可替代品订货策略
Ordering policy for substitutable products based on consumer preference bias

梁红燕, 许民利,
LIANG Hong-yan
, XU Min-li, JIAN Hui-yun

- , 2015, DOI: 10.6040/j.issn.1671-9352.0.2014.406
Abstract: 摘要: 基于消费者选择偏好,建立了相应零售商利润-订单量的条件风险价值模型。以零售商利润为最优化目标,在市场总需求不确定时,考虑零售商风险偏好、消费者选择偏好及两种产品的可替代性,研究零售商的最优订货策略。研究结果表明,当产品订货量在一定范围时,产品替代性将失去作用:当两种产品总订货量在一定范围时,产品最优订货量随顾客偏好系数及产品替代系数的提高而增大,随替代产品顾客偏好系数和零售商风险规避程度的提高而减小:产品与替代产品间的顾客偏好系数差异越大,两产品总订货量越大。
Abstract: Based on consumer preference bias, a profit-order quantity decision model with stochastic demand under Conditional Value-at-Risk(CVaR)criterion was established. In order to optimize retailer's profit, when the demand is uncertain, the optimal ordering policy with the consideration of retailer's risk preference, consumer preference bias and product substitutability were discussed. The results show that when the order is in certain range, the ordering policy depends on consumer preference bias and not on the product substitutability. When the total order is in certain range, the optimal ordering quantity is positively correlated to the consumer preference bias factor and substitutable factor, and it has a negative correlation to the preference bias of another substitutable product and the retailer's risk averse. If the consumer bias between substitute products is bigger, the total ordering quantity will also be bigger
“报童问题”中风险偏好下的条件风险值及其优化
,许民利
控制与决策 , 2013,
Abstract: 建立了报童随机利润的分布函数,得到任意风险水平下的VaR解析表达式或应满足的条件.考虑缺货成本,针对风险规避和风险偏爱两种情况,分别建立不同订购量和风险水平下的条件风险值模型,并将模型中对利润变量的积分转换为对随机需求变量的积分,解决了模型中因包含VaR变量而求解困难的问题.分析了给定风险水平下的最优决策,讨论了缺货成本为0的特殊情形.风险中性报童的期望利润与最优决策可由风险规避或风险偏爱的相应公式推导.最后对下一步的研究方向进行了展望.
具有两阶段生产模式和需求信息更新的供应链契约研究
, 王国顺, 许民利
中国管理科学 , 2013,
Abstract: ?针对二级供应链,在基于Stackelberg博弈的批发价契约中,分析了折扣价格与零售商最优提前订购量的关系及对契约双方期望收益的影响;设计了价格折扣与回购联合的协调契约,分析了供应链系统的最优提前生产量、供应链协调条件及协调契约下制造商和零售商的期望收益变化,并在协调契约不满足制造商的个体理性约束时,提出采用不对称Nash谈判模型设计两阶段生产与订购的回购契约,在保证供应链系统整体绩效最优的条件下,使制造商和零售商利润都能得到满意增长。研究表明,三级供应链实行两阶段订购的必要条件是分销商与零售商的最优提前订购量相等,与二级供应链相比,价格折扣契约下三级供应链效率更低,但价格折扣与回购联合的契约同样能协调三级供应链,该协调契约满足零售商与分销商激励相容约束。
不同风险偏好下双渠道供应链定价决策
许民利,聂晓哲,
- , 2016, DOI: 10.13195/j.kzyjc.2014.1335
Abstract: 为了探讨风险偏好对双渠道供应链决策的影响, 基于条件风险值(CVaR) 准则建立双渠道供应链定价决策模型, 并给出了模型的求解方法和最优解. 研究表明, 根据不同风险偏好程度, 供应链成员会采取不同定价策略; 当制造商风险偏好程度确定、零售商风险规避度增加时, 最优零售价降低, 最优批发价升高, 直销价不减; 当零售商风险偏好度确定、制造商风险规避度增加时, 各最优价格均降低; 风险偏爱的影响则与风险规避相反.
产品质量和WTP差异下的制造/再制造生产决策
许民利,梁红燕,
- , 2016, DOI: 10.13195/j.kzyjc.2014.1972
Abstract: 在需求与价格、质量相关的假设下, 提出再制造产品的3 种生产模式, 给出最优生产决策. 研究结果表明, 随着再制造产品支付意愿(WTP) 的提高, 第2 阶段新产品产量都将下降, 再制造产品和第1 阶段新产品产量在Model O和Model OI 模式下上升, 在Model I 模式下不变; 产品质量的上升会使所有产品的产量都下降, 导致原设备生产商(OEM) 的收益下降, 而独立的再制造商(IR) 的收益在一定范围内上升, 但其获利所需最低WTP值也将上升. 数值仿真验证了各参数对生产决策及利润的影响.
A Novel Alignment-Free Method for Comparing Transcription Factor Binding Site Motifs
Minli Xu,Zhengchang Su
PLOS ONE , 2012, DOI: 10.1371/journal.pone.0008797
Abstract: Transcription factor binding site (TFBS) motifs can be accurately represented by position frequency matrices (PFM) or other equivalent forms. We often need to compare TFBS motifs using their PFMs in order to search for similar motifs in a motif database, or cluster motifs according to their binding preference. The majority of current methods for motif comparison involve a similarity metric for column-to-column comparison and a method to find the optimal position alignment between the two compared motifs. In some applications, alignment-free methods might be preferred; however, few such methods with high accuracy have been described.
Computational prediction of cAMP receptor protein (CRP) binding sites in cyanobacterial genomes
Minli Xu, Zhengchang Su
BMC Genomics , 2009, DOI: 10.1186/1471-2164-10-23
Abstract: We have predicted and analyzed the CRP binding sites and regulons in 12 sequenced cyanobacterial genomes using a highly effective cis-regulatory binding site scanning algorithm. Our results show that cyanobacterial CRP binding sites are very similar to those in E. coli; however, the regulons are very different from that of E. coli. Furthermore, CRP regulons in different cyanobacterial species/ecotypes are also highly diversified, ranging from photosynthesis, carbon fixation and nitrogen assimilation, to chemotaxis and signal transduction. In addition, our prediction indicates that crp genes in modern cyanobacteria are likely inherited from a common ancestral gene in their last common ancestor, and have adapted various cellular functions in different environments, while some cyanobacteria lost their crp genes as well as CRP binding sites during the course of evolution.The CRP regulons in cyanobacteria are highly diversified, probably as a result of divergent evolution to adapt to various ecological niches. Cyanobacterial CRPs may function as lineage-specific regulators participating in various cellular processes, and are important in some lineages. However, they are dispensable in some other lineages. The loss of CRPs in these species leads to the rapid loss of their binding sites in the genomes.Cyclic AMP receptor protein (CRP), also known as catabolite gene activator protein (CAP), is an important transcriptional regulator widely distributed in a variety of bacterial groups [1,2]. The biological processes under the regulation of CRP are highly diverse, including energy metabolism [3,4], cell division and development [5], toxin production [1], competence development [6], quorum sensing [7] and cellular motility [8,9]. CRP belongs to the CRP/FNR transcription factor (TF) superfamily [10], which are generally believed to function as global regulators throughout the eubacteria [11]. Each member of the CRP/FNR superfamily contains an N-terminal effector binding domain a
考虑低碳消费者行为和专利保护的再制造产品定价决策
许民利,莫珍连,,马本江
- , 2016, DOI: 10.13195/j.kzyjc.2015.0311
Abstract: 考虑人们对再制造产品的偏好及专利保护, 建立基于不同消费者群体支付意愿的需求模型, 研究新产品和再制造品的定价决策. 结果表明: 低碳消费者比例和普通消费者对再制造品的接受程度同时影响定价决策; 无论是否存在专利保护, 低碳消费者比例始终影响再制造商的定价策略, 而原制造商的定价策略只有在普通消费者对再制造品的接受程度较低时, 低碳消费者比例才会影响其定价策略; 在有专利保护时, 再制造商倾向于高价策略.
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