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21世纪,人类进入了一个以知识为主宰的全新经济时代。在这一时代,人力资源与知识资本优势的独特性成为企业重要的核心技能,人力资源的价值成为衡量企业整体竞争力的标志。同时人力资源管理经历着前所未有的来自全球一体化的力量如信息网络化的力量、知识与创新的力量、顾客的力量、投资者的力量、组织的速度与变革的力量等各种力量的挑战和冲击。 相似文献
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The most frequently associated options in the physical shipping market are options to extend the charter period on time charters and additional shipment options on contracts of affreightment. The value of freight options, in practice, is estimated mostly by referring to forward curves. An option on freight has different properties from its financial counterparts, and the straightforward adoption of theoretical models does not produce promising results. In this paper, extension options, which have the property of options on futures, were transformed into regular European options before the application of the Black-Scholes model (BSM). The efficient market hypothesis, which justifies the parity of the performance of a long-term charter to that of repetitive short-term charters, worked as the basis for the transformation. The option values determined by the BSM were compared with actual realized values. Additionally, the artificial neural networks (ANN) was employed to derive the option values. This study is meaningful as the first-time application of both the closed-form solution and the ANN to the valuation of physical freight options. The research results can contribute to the quality of chartering decisions. The results could also be used in quantifying credit risk, as extension options tend to be granted to charterers with more creditability. 相似文献
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A new logit-based model for assigning public transit passengers to transit lines or routes is proposed. The model is based on the realistic assumption that once passengers arrive at stops, they can obtain information regarding the specific departure times. Furthermore, it takes into account that passengers are heterogeneous and hence, the choice made by a ‘representative’ passenger appears to be stochastic. The model is evaluated by means of simulations. 相似文献
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随着我国企业参与国际竞争越加频繁,以及国内政府、公众对环保的重视,逆向物流领域的研究不断深入。本文首先阐明逆向物流的内涵和理解,以不同视角简析企业实施逆向物流的战略价值,并结合我国实际情况探讨了逆向物流的管理方法。为我国企业实施逆向物流战略提供借鉴。 相似文献
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价值分析作为技术经济的一个分支,在新产品开发设计阶段被视为降低成本的利器,得到越来越广泛的应用。本文从价值分析的核心研究方法——功能分析入手,提出价值分析不但可用于降低成本,还可以提高产品可靠性及设计的合理性。 相似文献
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爆破震动DDA数值模拟 总被引:2,自引:0,他引:2
通过将爆破荷载等效到弹性震动圈上,提出了不同于有限元的爆破荷载简化等效处理办法,并使用DDA数值分析方法进行了模拟,模拟结果表明这种方法是可行的. 相似文献
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世界营销环境正随着新经济时代的兴起发生改变,以营销创新为主题的新营销革命风暴在国内外迅速掀起。本文从市场营销理念创新和市场营销策略创新两个方面,分别又从几个不同的角度进行阐述,指出我国企业高层领导应高瞻远瞩,精心策划,把营销创新工程作为企业的最重要战略来管理,结合实际进行相应的变革与创新,以适应新经济时代的要求,提高企业核心竞争力。 相似文献
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从路面结构设计问题、现场施工质量控制、投入运营后超载车辆管理等方面,结合本人的工程实践,分析了沥青路面早期破坏的原因。 相似文献
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新时期高校基建工程管理浅谈 总被引:1,自引:0,他引:1
高校基本建设工作,是保证高校发展的重要基础条件。工程质量、施工进度与投资控制是基建工作的主题。文章就如何做好高校基建管理工作这一问题,结合基建工程管理过程,从施工图变更处理、隐蔽工程检查验收、施工现场科学管理、投资动态控制等方面进行了探讨。 相似文献
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单壳油轮淘汰已经时目无多,按照2005年生效的(73/78防污公约》附则I修正案,我国和一些国家都在制定措施,加快淘汰单壳油轮。而如今席卷全球的金融危机,似乎也为单壳油轮的淘汰吹起了号角。 相似文献
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介绍了光电式绝对值编码器在港口机械上的安装形式,与可编程控制器的连接,以及程序编写的思路,和乱码故障的排除方法。 相似文献
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Private provision of public infrastructure (PPP) is meant to give incentives to increased efficiency in construction as well in operation and maintenance of the infrastructure e.g. within the transport sector. Efficiency is not only (private) economic efficiency, but also social efficiency e.g. social marginal cost pricing of use of the infrastructure.Is it possible to design contracts concerning payment mechanisms and financial instruments for transport infrastructure that will stimulate social efficiency and optimal allocation of risks between parties? The paper discusses whether different targets can be met and whether compromises may lead to acceptable second best solutions.PPP implies an opportunity to let the user-payment give desired incentives in the form of Social Marginal Cost Pricing (SMCP). A PPP project is a set of contracts and agreements between several parties, including the Government, the private contractor, subcontractors, banks and infrastructure users. These contracts should be designed to give the right incentives to the parties to achieve optimal risk allocation and utilising of resources.Long contract-periods are a common feature of PPPs. The paper examines the way that financial solutions should be designed to achieve the goals for the PPP-projects concerning economic and social efficiency. The expected size and variation of the income stream from the project will influence the loan conditions offered by banks concerning interest rates, guarantees and repayment and also the ability to attract investors. The balance between equity and loans again influences the conditions of the loans. An additional problem is asymmetric information between parties. The private contractor usually knows more about the task than the Government (hidden knowledge), and the Government cannot have full knowledge of the efforts of the contractor (hidden actions). 相似文献
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针对受降雨影响显著的非饱和残积土土质边坡,运用饱和-非饱和土壤水分运动的理论和二维非稳态渗流有限元模型,模拟雨水入渗引起的暂态渗流场,建立非饱和土边坡雨水入渗过程的计算模型.对降雨条件下,饱和-非饱和暂态渗流场二维问题进行数值求解.分析降雨强度、降雨持时和土壤渗透系数等重要参数对非饱和土边坡渗流场分布、发展的影响,并做出实例分析. 相似文献
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