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1.
基于供应链管理的企业库存优化效果模拟与分析   总被引:4,自引:0,他引:4  
利用供应链管理的思想,通过对供应链上的企业库存进行优化模拟与分析,揭示了供应链内部信息共享、加快信息流动、缩短订货周期、供应商管理库存(VMI)等是影响供应链管理优化效果的核心因素;通过比较应用供应链管理前后企业库存的变化,说明了供应链管理可以有效平抑库存,缩短供货周期,降低企业成本,提高企业核心竞争力。  相似文献   

2.
针对包括一个制造商、一个分销中心和多个零售商的三级供应链信息共享模型,研究了共享需求信息对制造商目标库存量和库存成本的影响,仿真分析显示了信息共享在三级供应链中的价值和重要性,为供应链管理决策提供支持.  相似文献   

3.
考虑缺货成本的 VMI 利益分配   总被引:1,自引:0,他引:1  
考虑缺货成本,从库存成本角度开展研究,通过对比实施VMI前后供应链库存成本模型,指出VMI短期内供应链收益来源于库存成本变化,且存在责任利益不一致的情况。针对供需双方不同地位,应用价格契约、斯坦科尔博格博弈模型与收益共享契约分别建立了零售商占优与供需双方地位平等情况下的利益分配模型,求解出零售商激励采购价格与收益共享系数的具体值,并采用算例进行分析。  相似文献   

4.
基于VMI的供需双方利益分配模型   总被引:5,自引:2,他引:3  
针对解决实施供应商管理库存策略短期内合作双方的责任与利益不统一的问题,在分析库存成本模型,证明该策略能够降低供应链库存成本的基础上,根据双方优势地位的不同,建立了短期内供需双方利益分配模型,并进行了实证研究.该模型对于建立供应商零售商双方稳定的合作关系具有重要的理论与现实意义.  相似文献   

5.
库存管理是供应链管理的重要组成部分,是供应链上各节点企业实现合作以及供应链实现集成管理的关键所在。在供应链管理模式下,库存量的高低不仅影响着单一企业的综合成本,而且制约着整条供应链的性能。本文主要阐述目前供应链条件下库存管理中存在的问题,以及解决问题的相应对策。  相似文献   

6.
目的为了达到节约工程建设行业企业材料管理成本的目的,以常用的2种工程材料钢材和水泥存储于同一仓库且由同一供应商供货的库存管理为研究对象进行研究。方法分析承包商采购材料情形下,供应商和承包商基于合作伙伴关系实现库存信息共享,建立2种材料两级库存联合库存成本优化的数学模型,并通过工程实例,运用粒子群算法求解,验证研究方法的有效性。结果不同的材料订购策略对工程供应链上的材料库存成本影响很大,数学模型可以给出恰当的订购策略,满足系统成本的最低要求,从而节约成本,提升工程供应链的整体竞争力。结论研究成果丰富了工程供应链管理理论、工程材料的库存管理理论,并对工程建设实践中的材料采购有一定的指导意义。  相似文献   

7.
考虑市场随机需求、产品绿色度、绿色研发成本等因素,研究绿色农产品三级供应链协调问题。首先,构建了不同决策模式下供应链成员的利润模型,发现合作可提高供应链整体收益,随后构建"收益共享-成本共担"混合契约对绿色农产品供应链进行协调。研究结论表明:混合契约能够降低绿色农产品售价,提高绿色度,增加绿色农产品市场需求;合理比例的收益共享和成本共担可使各个绿色供应链成员达到共赢。最后通过算例分析验证了契约模型的正确性。  相似文献   

8.
在信任与合作的前提下,销售商提供库存与销售信息,供应商通过库存销售比(存销比)确定补货时间和补货量进行补货.这种补货策略通过信息共享与无订单补货,达到消除供应链中牛鞭效应的目的.  相似文献   

9.
胡继灵  段松  何新 《工业工程》2004,7(4):46-48,53
介绍了主要的信息共享技术,并且对供应链信息共享技术进行了成本效益分析,包括分析步骤、成本效益组成以及分析方法等。  相似文献   

10.
供应链管理中的风险防范   总被引:26,自引:0,他引:26  
通过分析供应链管理中供应环节、生产过程、用户需求的不确定性以及在多企业运作时这些不确定性所导致的两种典型的风险表现形式:短缺引起的连锁反应和虚假需求引起的连锁反应,以及它们对供应链整体竞争力的负面影响,提出了防范供应链风险的措施,即强化核心企业的领导地位、简化供应链、建立核心供应链、改善供应链的弹性以及在整个供应链上共享库存信息、计划信息、客户需求信息,同时也讨论了实现共享的技术手段等。  相似文献   

11.
In this paper, we present a new method for inserting several triangulated surfaces into an existing tetrahedral mesh generated by the meccano method. The result is a conformal mesh where each inserted surface is approximated by a set of faces of the final tetrahedral mesh. First, the tetrahedral mesh is refined around the inserted surfaces to capture their geometric features. Second, each immersed surface is approximated by a set of faces from the tetrahedral mesh. Third, following a novel approach, the nodes of the approximated surfaces are mapped to the corresponding immersed surface. Fourth, we untangle and smooth the mesh by optimizing a regularized shape distortion measure for tetrahedral elements in which we move all the nodes of the mesh, restricting the movement of the edge and surface nodes along the corresponding entity they belong to. The refining process allows approximating the immersed surface for any initial meccano tetrahedral mesh. Moreover, the proposed projection method avoids computational expensive geometric projections. Finally, the applied simultaneous untangling and smoothing process delivers a high‐quality mesh and ensures that the immersed surfaces are interpolated. Several examples are presented to assess the properties of the proposed method.  相似文献   

12.
13.
A flow calorimeter for enthalpy increment measurements on condensed gases is presented. A better knowledge of the properties of the liquefied natural gas is needed, and therefore a liquid loop has been designed for our flow calorimeter. The fluid loop in the calorimeter is designed in order to avoid the two-phase region, since two phases would give compositional disturbances in the measurements. The avoidance of the two-phase region is made possible by increasing the pressure of the test fluid after the measurement section, then heating the fluid at super-critical pressure past the critical point. Finally, the fluid is throttled to the low-pressure gas state at the inlet condition of the compressor that circulates the fluid. To perform the pressure increase, a new cryogenic pump has been designed. To evaluate the new equipment, measurements were taken on liquid ethane over the temperature range 146–256 K at pressure between 0.9 and 5.1 MPa.  相似文献   

14.
On November 30, 2007, the China Association for Standardization (CAS) held a press conference at Beijing Diaoyutai State Guest House. Leaders from the China Household Electric Appliance Research Institute, the China Household Electric Appliance Association, and the China Consumers' Association attended and made speeches.……  相似文献   

15.
Standards are the basis for production enterprises to organize production, ex-factory inspection, trade (delivery) and technical exchanges, product certification, quality arbitration and supervision.……  相似文献   

16.
In the present study a high‐boron high speed steel (HSS) roll material was designed. Many expensive alloy elements have been substituted by cheap boron alloy, and high‐boron high speed steel roll has been manufactured by centrifugal casting method. The microstructures, mechanical properties and wear resistance of centrifugal casting high‐boron high speed steel roll have been investigated by optical microscopy (OM), scanning electron microscopy (SEM), and X‐ray diffraction (XRD) analysis, hardness test, impact test and wear test. The results indicated that the solidification microstructures of high‐boron high speed steel roll consisted of M2(B,C), (W,Mo)2(B,C), M3(B,C), M23(B,C)6 type borocarbides and martensite, a small amount of retained austenite. Borocarbides were continuously distributed over the grain boundary. After quenching from 1050 °C, local broken network appeared in partial borocarbides, and fine secondary borocarbide precipitated from the matrix. After tempering from 525 °C, the amount of precipitated borocarbide increased significantly. After heat treatment, the hardness of high‐boron high speed steel roll excelled 60 HRC, and its impact toughness excelled 8.0 J/cm2. The single groove steel rolling amount of high‐boron high speed steel rolls increases by 500% than that of bainite cast iron roll, when the rolls are used in K1 mill housing of bar mill.  相似文献   

17.
A four-ball tester was used to evaluate the anti-wear performance of three kinds of organomolybdemun compounds in the engine oils, i. e., molybdenum dialkyldithiophosphate (MoDDP), molybdenum dialkyldithiocarbamate ( MoDTC), and sulphur and phosphorus freeorganomolybdeum (Molybdate). The results indicate that a low concentration of MoDDP doesn' t improve the anti-wear properties of the commercial engine oils, but a high concentration of MoDDP can obviously improve the anti-wear properties and the load-carrying capacity of the engine oils. MoDTC doesn' t improve the antiwear properties of the engine oils, but worsens the anti-wear properties of the oils. Signifi can timprove ment of frictional and wear characteristics is obtained with Molybdate added in the commercial engine oils and the formulated oils.  相似文献   

18.
The definition of the thixotropy is a decrease in viscosity with time in shear and a subsequent recovery of viscosity after the shear deformation is removed.We ...  相似文献   

19.
Several researches have been reported about the characteristic of β-Ga2O3 nanowires which was synthesized on nickel oxide particle. But indeed, recent researches about synthesis of β-Ga2O3 nanowires on oxide-assisted transition metal are limited to nickel or cobalt oxide catalyst. In this work, Gallium oxide (β-Ga2O3 ) nanowires were synthesized by a simple thermal evaporation method from gallium powder in the range of 700 - 1000℃ using the iron, nickel, copper, cobalt and zinc oxide as a catalyst, respectively. The β-Ga2O3 nanowires with single crystalline without defects were successfully synthesized at the reaction temperature of 850, 900 and 950℃ in all the catalysts. But optimum experimental condition in synthesis of nanowires varied with the kind of catalyst. As increasing synthesis temperature,the morphology of gallium oxide nanowires changed from nanowires to nanorods, and its diameter increased. From these results, we could be proposed that the growth mechanism of β-Ga2O3 nanowires was changed with synthesis temperature of nanowires. Microstructure and morphology of Synthesized nanowire was characterized by HR-TEM, FE-SEM, EDX and XRD.  相似文献   

20.
Cubic boron nitride(c-BN) film was deposited on a Si (100) substrate by the RF-magnetron sputtering.The mainly problems for fabrication of c-BN films are the low purity and high intrinsic compressive stress. In order to solve the two problems, the c-BN film with the buffer interlayer was deposited on the substrate which had been implanted with nitrogen and/or boron ions. The results show: the implantation of nitrogen ions can obviously increase c-BN content and reduce the internal stress slightly; while the implantation of boron shows no obvious improvement to the content of c-BN, which can reduce the internal stress in the film obviously. In addition, it is suggested that the implantation of nitrogen and boron shows the best result, which not only can increase the content of c-BN, but also reduce the internal stress in the c-BN film obviously.  相似文献   

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