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2009 16th International Conference on Industrial Engineering and Engineering Management最新文献

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Analysis of industry differences in information systems growth of enterprises in northeast old industrial base 东北老工业基地企业信息系统成长的行业差异分析
Xinhua Bi, X. Qi, Wan Su, Cuiling Yu
It collected and processed the history data of their information system construction through an investigation of 222 enterprises in northeast old industrial base, explored the industry differences in growth process of information systems of enterprises. By analysis, we found that there were differences in the time of starting to implement informatization and starting to build a LAN, development mode and application field of information system of different industries. At last we concluded the reasons caused the differences, proposed several useful countermeasures and suggestions.
通过对东北老工业基地222家企业信息系统建设历史数据的调查,收集和处理企业信息系统建设历史数据,探讨企业信息系统成长过程中的行业差异。通过分析,我们发现不同行业在开始实施信息化和开始建设局域网的时间、信息系统的开发模式和应用领域都存在差异。最后总结了造成差异的原因,并提出了一些有益的对策和建议。
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引用次数: 0
Model choosing method based-on variation coefficient and its application to project management of petrochemical engineering construction 基于变异系数的模型选择方法及其在石化工程建设项目管理中的应用
Zhiguo Han, Jiming Wang, Zhiguo Chen
This paper provides a review of the related literatures on decision making indexes and methods for project management mode selection, and analyses the characteristics of petrochemical project construction, and further makes the comparison among the common management modes for petrochemical project at present and designs the corresponding mode selection indexes. A method of management mode selection for petrochemical project construction is presented, in which the index weight is determined based on variation coefficient method. Finally, an illustration is given through a case.
综述了项目管理模式选择决策指标和方法的相关文献,分析了石化项目建设的特点,并对目前石化项目常用的管理模式进行了比较,设计了相应的模式选择指标。提出了一种基于变差系数法确定指标权重的石油化工项目建设管理模式选择方法。最后,通过一个案例进行了说明。
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引用次数: 3
Application of rainflow cycle counting in the reliability prediction of automotive front corner module system 雨流循环计数在汽车前转角模块系统可靠性预测中的应用
E. A. A. E. Mohamed, M. Yusuff, A. P. K. A. Wahab
The need for improvement in engineering reliability characterization for automotive components is nowadays becoming a major industry request. The post-design approach in determining reliability is inappropriate for an integrated product development process that aims to incorporate engineering life cycle requirements from the early stage. This paper intends to give a description of a method used in predicting the service loads in the reliability characterization of the automotive front corner module system. An accurate representation of the service environment as well as load histories is obtained from the proving ground by data acquisition. The acquired service load data is applied on durability test rig and number of cycles of the resultant random stress-time data is determined using rainflow cycle counting. Superposition of rainflow matrices is applied in order to replicate the actual service loads profile and cumulative damage analysis based on Palmgren-Miner rule is employed to determine life of components and system.
提高汽车零部件的工程可靠性已成为当今行业的一项重要要求。确定可靠性的后设计方法不适用于旨在从早期阶段纳入工程生命周期需求的集成产品开发过程。本文介绍了一种用于预测汽车前角模块系统可靠性工作负荷的方法。通过数据采集从试验场获得服务环境和负载历史的准确表示。将获得的工作载荷数据应用于耐久性试验台上,并采用雨流循环计数法确定随机应力-时间数据的循环次数。采用雨流矩阵叠加法来模拟实际使用载荷分布,采用基于Palmgren-Miner规则的累积损伤分析来确定部件和系统的寿命。
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引用次数: 5
Delta-neutral dynamic hedging of the HS300 stock index futures and option portfolio — The evidence from simulation 沪深300股指期货期权组合的delta中性动态套期保值——来自模拟的证据
Jie (Diana) Wei, Liyan Han
The launch of Shanghai-Shenzhen 300 index futures can not only supply the hedging tools and liquidity, but also bring some new kind of risk. The principal of this research is to analyze the risk hedging policy of the index futures using various kinds of dynamic hedging portfolios of index futures and index options with the same underlying index. Firstly, we developed a delta-neutral dynamic hedging model of the stock index futures/option portfolio in a perfect market; Secondly, we completed the daily and weekly adjusting of dynamic delta-neutral hedging and proposed the dynamic-neutral adjusting strategy: adjusting continuously the stock index futures position to achieve zero-delta of the portfolios on the basis of the prerequisite of keeping the stock index option position constant. The results of this analysis show that a protective “delta-neutral” strategy produces a more effective hedge than the other hedging examined, daily adjusting is optimal. Thus, we further suggest that with the steady operation of Shanghai-Shenzhen 300 stock index futures, China could launch the stock index options in due time, thus to provide developing strategy for the stock index derivatives markets.
沪深300指数期货的推出,在提供对冲工具和流动性的同时,也带来了一些新的风险。本研究的主要内容是利用具有相同标的指数的指数期货和指数期权的各种动态套期保值组合来分析指数期货的风险套期保值策略。首先,建立了完美市场下股指期货/期权组合的delta中性动态套期保值模型;其次,完成动态delta中性套期保值的日、周调整,提出动态中性调整策略:在保持股指期权头寸不变的前提下,持续调整股指期货头寸,实现投资组合的零delta。这一分析的结果表明,保护性的“delta中性”策略产生比其他对冲检查更有效的对冲,每日调整是最优的。因此,我们进一步建议,随着沪深300股指期货的稳定运行,中国可以适时推出股指期权,从而为股指衍生品市场提供发展策略。
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引用次数: 0
Study on work improvement in a packaging machine manufacturing company 某包装机械制造公司工作改进研究
X. F. Sun, G. Cheng, W. Li
This paper studies the improvement of production efficiency and balance rate of the manual assembly line in a packaging machine manufacturing company. MODular Arrangement of Predetermined Time Standards (MODAPTS) method is used to obtain time values for elements and for entire operations of the manual assembly line. Also the ECRS four principles (Eliminate, Combine, Rearrange and Simple) are used to minimize the idle time at every station or the percentage of line balance loss. In order to verify the results that were obtained from the generated line-balancing pre- and post-, Witness simulation software is used to estimate the output. Simulation results showed that productivity increases about 41.72% higher than the current situation.
本文对某包装机械制造企业手工装配线生产效率和平衡率的提高进行了研究。预定时间标准的模块化安排(MODAPTS)方法用于获得人工装配线各部件和整个操作的时间值。此外,ECRS的四个原则(消除,合并,重新安排和简单)被用来最小化每站的空闲时间或线路平衡损失的百分比。为了验证从生成的线平衡前后获得的结果,使用Witness仿真软件来估计输出。仿真结果表明,改进后的生产率比现有的生产率提高了41.72%。
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引用次数: 9
Design economics of product platforms for enterprise sustainability towards mass customization 面向大规模定制的产品平台设计经济学
J. Jiao
Being customer centric and producing only what customers really want are considered as a foremost means to increase both financial and economical sustainability for an enterprise. Developing multiple product variants based on product families sharing common platforms has been well recognized as an effective means to cater for product variety while maintaining mass production efficiencies. It provides an important input for increasing the sustainability of value creation along the entire enterprise value chain. Consistent with the options thinking, this paper outlines a research agenda of real option theoretic financial analysis models for product platforms by identifying product variety-related real options.
以客户为中心,只生产客户真正想要的产品,被认为是提高企业财务和经济可持续性的最重要手段。基于共享公共平台的产品族开发多种产品变体已被公认为是在满足产品多样性的同时保持大规模生产效率的有效手段。它为在整个企业价值链中增加价值创造的可持续性提供了重要的输入。根据期权思维,本文通过识别与产品品种相关的实物期权,勾勒出产品平台实物期权理论财务分析模型的研究议程。
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引用次数: 3
Study on assessment of the sustainable development of regional industrial enterprises 区域工业企业可持续发展评价研究
Yuan Qinghe, Hou Yanhui, W. Xinhua
Assessment of sustainable development of regional industry enterprises is an important content of regional sustainable development study. Based on the principles of establishing assessment index system of sustainable development of regional industrial enterprises, an index system including four-layer and 56 indicators was established, the membership function model of quantitative indexes and the choosing value standards of qualitative indexes were discussed. Based on the learning mechanism of BP neural network, the weight of each index and each layer were ultimately determined. In the end, the fuzzy comprehensive evaluation method of comprehensive assessment and a practical verifying example were given. This study can provide scientific basis for working out strategy of sustainable development of regional industrial enterprises.
区域工业企业可持续发展评价是区域可持续发展研究的重要内容。根据建立区域工业企业可持续发展评价指标体系的原则,建立了包含4层56个指标的区域工业企业可持续发展评价指标体系,探讨了定量指标的隶属函数模型和定性指标的取值标准。基于BP神经网络的学习机制,最终确定各指标和各层的权重。最后给出了综合评价的模糊综合评价方法,并给出了一个实际的验证实例。本研究可为区域工业企业可持续发展战略的制定提供科学依据。
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引用次数: 0
Calculation method of delay claims with multi-event interference based on shapley value 基于shapley值的多事件干扰延迟索赔计算方法
Donghong Cui, L. Yao
As an important measure for parties of the contract to protect their own interests, project claim is the core of project contract management. For claims of time delay under multi-agent and multi-event interference, it is difficult to assess the responsibility. To solve this problem, this paper presents a new analytical method based on Shapley value, and brings forward a new parameter called Correction Factor to denote the affecting degree of every interference event. On the basis of this method, project delay responsibility is allotted to each single responsible activity, and then allotted to both owner and contractor in each single responsible activity. Finally, the responsibility is reallotted to the responsible parties through Correction Factor. This method takes into account the impact of the interference event, and makes the responsibility-sharing more equitable.
工程索赔作为合同当事人维护自身利益的重要手段,是工程合同管理的核心。对于多智能体和多事件干扰下的时间延迟索赔,其责任评估较为困难。为了解决这一问题,本文提出了一种新的基于Shapley值的分析方法,并提出了一个新的参数“校正因子”来表示每个干扰事件的影响程度。在此基础上,将项目延迟责任分配给每个单独的责任活动,然后在每个单独的责任活动中分配给业主和承包商。最后,通过修正因子将责任重新分配给责任方。该方法考虑了干扰事件的影响,使责任分担更加公平。
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引用次数: 2
Data envelopment analysis model and its application on technical efficiency evaluation of coal enterprise 数据包络分析模型及其在煤炭企业技术效率评价中的应用
F. Pan, N. Li, J. Gao
A math model based on Data Envelopment Analysis was proposed to make comprehensive technical efficiency evaluation for coal enterprise with multi-input and multi-output systems generally, and this makes it complex and difficult to make precise technical efficiency evaluation, for example, it is hard to set evaluating weights index and difficult to get sound evaluation when the evaluation function is unknown. However, these difficulties can be avoided with DEA model. The C2GS2 model and EC2GS2 model derived from C2GS2 model were proposed and their efficiency judgment criterions were given in this paper. Then based on existing data, the model was applied to make technical efficiency evaluation for Chinese coal enterprises to estimate their technical performance.
提出了一种基于数据包络分析的数学模型,对一般多投入多产出系统的煤炭企业进行综合技术效率评价,这给技术效率的精确评价带来复杂和困难,如评价权重指标难以设定,评价函数未知时难以得到合理的评价。而采用DEA模型可以避免这些困难。提出了C2GS2模型和由C2GS2模型衍生而来的EC2GS2模型,并给出了它们的效率判断准则。然后在现有数据的基础上,运用该模型对我国煤炭企业进行技术效率评价,对其技术绩效进行评价。
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引用次数: 1
Influence of rim thickness on crack initiation life of wheel web plate for freight car 轮辋厚度对货车轮腹板起裂寿命的影响
X. Nan, Xie Jilong, Xie Yunye
The temperature and stress distribution in freight car wheel are very important to the operation life. According to the data of investigation, the relationship among the wheel service life, crack rate on web hole and rim thickness is analyzed. The loads, boundary conditions and loading processes in the finite element analysis of temperature, stress field and wheel-railway mechanical stress are discussed according to the heat transfer theory, tread braking principle of wheel and UIC standard. Based on the wheel operation conditions, the influence of different rim thickness on grade braking thermal stress and wheel-railway mechanical stress is simulated with finite element method. The prediction model of crack initiation life for the wheel web hole, which has been taken into consideration for rim thickness, is established. The results show that the high stress at the web hole edge appears under grade braking load cases combined with mechanical load cases. The stress at wheel web hole edge will be increased as the rim thickness reduces, and the increase of thermal stress is much more obvious. Mechanical stress combined with thermal stress is absolutely necessary for crack initiation on wheel web hole. With the service time increases, the rim thickness will be reduced gradually, and the fatigue damage on web hole will be accelerated. The crack initiation life prediction is close to the practical situation.
货车车轮的温度和应力分布对车轮的使用寿命有重要影响。根据调查数据,分析了轮毂使用寿命、腹板孔裂纹率与轮辋厚度之间的关系。根据传热学理论、车轮踏面制动原理和UIC标准,讨论了温度、应力场和轮轨机械应力有限元分析中的载荷、边界条件和加载过程。基于车轮运行工况,采用有限元方法模拟了不同轮辋厚度对分级制动热应力和轮轨机械应力的影响。建立了考虑轮辋厚度的轮腹板孔裂纹起裂寿命预测模型。结果表明:分级制动载荷与机械载荷相结合的工况下,腹板孔边缘出现高应力;随着轮辋厚度的减小,轮腹板孔边缘的应力增大,热应力的增大更为明显。机械应力和热应力的结合是车轮腹板孔裂纹形成的必要条件。随着使用时间的延长,轮辋厚度逐渐减小,腹板孔的疲劳损伤加速。裂纹起裂寿命预测与实际情况较为接近。
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引用次数: 1
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2009 16th International Conference on Industrial Engineering and Engineering Management
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