基于敲出障碍期权和博弈理论的项目投资决策分析

阐述了实物期权的基本原理和敲出障碍期权的内涵及其定价求解，提出了基于敲出障碍期权的实物期权定价方法和博弈理论的项目投资决策分析，分析了双寡头市场结构下的项目投资决策，给出了算例分析。     

基于看涨期权的制造商碳排放权交易策略研究

针对碳排放权价格的不确定性,引入看涨期权策略,构建制造商主导的两级供应链博弈模型,利用Kuhn-Tucker条件求解。比较制造商以即时价格与以期权购买碳排放权策略的决策。研究表明,制造商只以期权形式购买碳排放权。碳价格对碳排放权期权购买量影响较小。碳价格较大时,碳排放权期权策略下制造商利润比即时价格购买策略的利润高,零售商和供应链利润也会提高。当碳排放权期权成本小于阈值,制造商采用期权策略可实现供应链企业利润的改善。     

考虑供给约束的最优期权组合及采购方法

研究零售商在由实时市场和供给受限的期权市场构成的组合市场中最优采购策略的问题.零售商按照期权合同能给其带来的期望利润大小对不同的期权合同进行分类,设计了求解零售商应预定的不同期权合同的最优数量的算法.通过数例说明了不同的期权合同给零售商带来的利润往往不同,合同的供给上限越严格,零售商的期望利润越小.     

工程采购的代理成本

以非对称信息博弈及委托-代理理论为理论背景，分析了工程采购代理成本的产生、组成及内涵关系，并对最优激励合同的设计、最优监督策略及其成本做了分析说明。     

双渠道订单农业供应链违约问题研究

为了分析双渠道情况下“保底收购,随行就市”型订单农业中的违约风险,减少农业合同违约率,利用博弈理论来描述农户和公司之间的交易过程和违约机理,基于逆向归纳法获得公司和农户的最优收购价和最优产量,探讨其分别在集中决策、分散决策以及纳什协商决策模式下的利润分配和行为选择。论文研究发现,在分散决策模式下的合约设计对农户有利,对公司不利,公司存在违约风险;纳什协商模型下的合约设计对农户和公司的利润水平均有利,双方均不会主动违约,该模型下的供应链可以达到稳定状态。同时纳什协商模型下的供应链整体利润大于分散决策模型下的供应链整体利润,且等于集中决策时的供应链利润,该模型可以实现供应链的完美协调。     

偏好差异下的跨组织R&D项目网络多主体知识转移行为研究

运用相关理论研究决策偏好下的跨组织RD项目多主体知识转移行为。首先,构建跨组织RD项目知识转移演化博弈模型,并分析了局部稳定性;其次,引入复杂网络与偏好理论,构建偏好差异下的跨组织RD项目合作网络上的知识转移博弈模型;最后,分析各关键因素与偏好差异对知识转移策略选择的影响。研究表明:吸收系数、协同系数、奖励系数与惩罚系数的增大促进了主体选择知识转移策略,而成本系数与知识转移水平呈负相关关系;利他偏好程度与利他偏好主体占比的增加对知识转移具有促进作用,竞争偏好程度与竞争偏好主体占比的增加对知识转移具有抑制作用。     

基于期权契约的低碳化供应链协调

在供应链低碳化背景下,基于“总量限制交易”模式,研究了由一个制造商和一个零售商构成的两级供应链期权契约协调问题.将批发价格契约作为参照点,采用合作博弈的方法,构建了期权契约模型.通过证明得到了期权契约得以实施的参数范围及考虑决策主体风险偏好和谈判能力时的利润分配方案.结论表明,与参照点相比,期权契约可以有效协调供应链并具有鲁棒性,决策主体的风险偏好对利润分配产生重要影响.     

基于演化博弈的应急物资生产能力储备策略

研究政府和企业共同储备应急物资生产能力的合作问题,就3种不同条件（无任何措施、惩罚、惩罚和补贴并行）政府和协议企业之间在应急物资生产能力的共同储备进行演化博弈分析。分析表明：在一定条件下,企业储备的收益和成本,政府定期或不定期检查的成本、政府奖惩力度等是影响双方合作的关键因素。通过算例对所得结论进行验证,最后给出应急物资生产能力储备的策略建议。     

基于演化博弈的我国电商绿色包装稳定策略分析

实施绿色包装是在电商快速发展过程中亟待解决的问题。在演化博弈理论的假设前提下,构建了以政府-电商企业-消费者三方为主体的博弈模型;探讨三方的期望收益模型、复制动态方程及由此构成的雅可比矩阵;分析三方博弈模型的均衡点,并判断出稳定点;最后通过数值仿真加以验证。研究结果表明,政府消极监管、电商企业提供绿色包装、消费者参与所构成的策略集是三方演化博弈的稳定点。     

动态联盟收益分配问题的博弈研究

借鉴委托-代理理论建立了动态联盟的收益分配模型,分析了动态联盟收益分配过程应考虑的因素,并以此为基础利用博弈论的相关模型分析动态联盟的博弈行为,其中包括两种非合作策略下的博弈和一种合作策略下的博弈,并通过实例论证了动态联盟进行合作机制设计和应用的必要性.     

The Research of Anti-Wear Properties of Organomolybdenum Compounds in the Engine Oils

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.     

Certification Becomes Important for the I Quality; and Safety Supervision of the Chinese Liquor Sector

The end of 2007, over 200 unit products of more than 80 Chinese firms have passed the quality grade certification for liquor products. These products involve distilled spirits, beer, wine, yellow wine, fruit syrup wine and others, and cover over 80% of the national top-branded liquor products.……     

Deposition and Coating Properties on CVD Tungsten

Surface characterization and microstructure studies are performed on chemical vapor deposited (CVD) tungsten coating. There is about 2 μm thickness diffusion layer of tungsten in the molybdenum substrate. The thermal shock test shows tungsten coating has good adhesion with molybdenum substrate, but the elements of oxygen and carbon in the tungsten coating have the bad affection to the adhesion. The result of high-temperature diffusion experiment is the diffusion rate from molybdenum substrate to tungsten coating is faster.     

Analysis of marine hydrobiont lipid extracts as possible cryoprotective agents

We studied a combined effect of the cryoprotectants both of lipid and carbohydrate origin at the presence of DMSO or without it on cell viability and the RNA synthesis in the embryonic mollusc and echinoderm cell cultures obtained at different developmental stages. Cryoprotective properties of exogenous lipids correlated with their thermotropic behavior. Lipid extracts from marine hydrobiontes, which thermal transitions are characterized by relatively small part of calorimetric thermogram area lying at temperatures above 0 °C (6–18%), were found to possess a considerable cryoprotective activity. The results are discussed in relation to the prediction of the cryoprotective activity of lipid extracts for marine animal cells. In addition, it was found that marine invertebrate cells can be cryopreserved without DMSO at the presence of trehalose and lipid extracts of some marine hydrobiontes.     

Low-Temperature Properties of Silver

Pure silver is used extensively in the preparation of high-temperature superconductor wires, tapes, films, and other configurations in which the silver not only shields the superconducting material from the surrounding materials, but also provides a degree of flexibility and strain relief, as well as stabilization and low-resistance electrical contact. Silver is relatively expensive, but at this stage of superconductor development, its unique combination of properties seems to offer the only reasonable means of achieving usable lengths of conductor. In this role, the low-temperature physical (electrical, thermal, magnetic, optical) and mechanical properties of the silver all become important. Here we present a collection of properties data extracted from the cryogenic literature and, to the extent possible, selected for reliability.     

Early ironwork in Biscay: Survey,excavation, experimentation and materials characterization. An integral study of the mountainside ironworks (ferrerías de monte or “haizeolak”)

ABSTRACT

The production of iron in Biscay (Basque Country, Spain) has been a hallmark of this territory of the North of the Iberian Peninsula throughout its history. The Archaeology team of the Basque Country Mining Museum has spent 13 years, so far, studying the origins of this activity through the evidences left at the old pre-hydraulic iron production workshops known as mountainside ironworks (ferrerías de monte) or haizeolak. It has catalogued 170 archaeometallurgical sites of this type in Biscay, and the archeological excavation of some of them has led to the knowledge of the different stages of the production process that took place in these workshops. The team has also experimentally reproduced the work carried out in a mountainside ironworks from the High Middle Ages, and it has currently started the characterization process of this type of activity through the study of the collected materials.     

Mechanism Study on the Wear of CrAlTiN Coated High-Speed Steel Twist Drills Under Dry Cutting Conditions

As demands about environment protection are growing up, dry cutting technology is getting more and more concerns from all over the world. Main works performed here are study on dry cutting performances and wear mechanisms of M2high-speed steel (HSS) twist drills with CrAlTiN multicomponent coatings, which was deposited using magnetron sputter ion plating system, in drilling 45 and 30CrMnSiA steel, and their comparisons to those in drilling the same steel but using monolayer CrN and commercial TiN coated drills. Drilling performances of drills are evaluated mainly through the measurements of width on outer corner flank land and the cutting forces. Results show that performances of CrAlTiN coated drills are better than those of monolayer CrN and TiN coated drills. In drilling 45 and 30CrMnSiA steel, the average tool life of the CrAlTiN coated drills are 17.2 and 11.8 times higher than those of the uncoated drills. Observing wear of the drill with scanning electronic microscope, results show that there is no crack or spallation of the CrAlTiN coatings in wear zones. Main mechanism of the wear here is adhesion.     

Study on Bond Ability of Arc-Spraying Coatings with Different Surface Pretreatment on Cast-Iron

Arc spraying coatings are widely used in various applications, but uncommon in cast iron substrate. Different surface pretreatment technology is tested on substrates of gray cast iron. Surface roughness and residual stress were measured by TR200 and X-ray diffraction analyzer. Influence of different surface pretreatment methods ( dry blasting and fusebond) on roughness and residual stress was analyzed. The arc-sprayed coatings of wire 3Cr13 (φ2mm) on gray cast iron substrate is studied. The microstructure and interface of bonding layer were observed by SEM. The bond strength was taken by tensile test. Results show that bond strength with grit blasting is higher than fuse-bond; it is feasible to make wire 3Cr13 coating with arc spraying on cast iron substrate roughened by grit blasting.     

Structural Characteristics of TiO2 Ceramic Coating by Micro-Plasma Oxidation

TiO2 ceramic coatings with thickness of 20 μm were formed on the surface of pure titanium by micro-plasma oxidation. Their micro-structures were investigated by by using X-ray diffraction and their surface images were detected by using scan electronic microscope. There were three kinds of TiO2 coatings, pure anatase type TiO2 phase, mixed phases consisted of rutile type TiO2 phase and anatase type TiO2 phase, pure rutile type TiO2 phase. The coating surface with the pure anatase type TiO2 phase is rough, while the coating surface with the pure rutile type TiO2phase is smooth. The upper coating surface with the mixed type TiO2 phases is anatase type TiO2 structure and the subsurface of the TiO2 coating is rutile type TiO2structure.     

Evaluation of fatigue life of steel using steel grain size

The insightful discussion of the relationship between the construction of metallographic and fatigue life and proposition of mathematical relationships describing this relationship was conducted in the paper. This paper presents a method for estimating the fatigue life, based on the construction of the microstructural material taking into account the grain size and the participation of ferrite and pearlite phase.