带磁性磁瓦与机壳的黏结方法

针对带磁性磁瓦在粘结过程中与机壳之间相互吸引造成胶水刮掉的现象,粘结完成后的夹持力不一致造成磁瓦 粘结在机壳上的内径偏小的问题,设计一种新型的粘结磁瓦的夹具结构。夹具采用卡盘自定心的原理,每片磁瓦在同一 圆周上,磁瓦同时接触机壳内壁不会出现刮胶现象,保证了胶水在粘结过程中不会损失,增强了磁瓦的粘结强度,保证了 磁瓦内径一致;夹具通过卡盘原理保证胶水凝固过程中的夹持力和夹持时间,保证特殊工序产品的一致性。     

《围城》中范懿行为心理分析

中国现代文学中涉及女性的婚姻问题一直被作家和读者们关注着,而对于大龄未婚女青年有关婚恋的语言、行为和心理的描述却是罕见的。独具慧眼的钱钟书先生在《围城》中有意无意地切入了这个由于众多原故产生的一个具有现代意识的新的社会问题。从《围城》中范懿和刘小姐二人可见当时大龄未婚知识女性的心理状态。     

法国象征主义的诗学思想

法国象征主义可谓西方现代主义的先声和源头，从诗学角度来看，象征主义对文学本质的特定理解，它观照世界的独特方式，它在生成与发展的历史过程中逐渐形成的本体论、技巧论等范畴，使其自身的艺术规律具备了自律特征，并非局限于具体的时代，而是具有了一般性的文学理论的系统化性质，因此，系统梳理象征主义诗学理念就成了考察现代主义的必要前提。本文主要探讨象征主义的“契合”、“暗示”、“纯诗”三个核心诗学概念。     

企业运营战略、制造战略与制造实践模式分析研究

战略与世界级实践的一致性研究源自企业“内部一致性”理论。结合前人的研究成果,构建了运营战略、制造战略和世界级实践模式。运营战略影响着制造目标的选择,制造目标影响着制造实践的选择。为了成功引进世界级制造实践,企业的各项工作安排必须遵循该“一致性”规律。     

基于碳排放约束的中国省际生态效率评价与驱动力研究

在构建生态效率评价指标体系的基础上,应用熵值法将多项环境污染指标综合为单一非期望产出指标,应用数据包络分析(DEA)和环境生产技术,构建考虑碳排放约束的省际全要素生态效率评价模型,结合Malmquist指数及其分解对中国2006—2012年30个省市自治区生态效率进行实证研究。结果表明,考察期内中国生态效率总体呈现缓慢增长,区域差异显著,大多数省市自治区生态效率与经济增长密切相关;诸多省市自治区生态效率的提升主要源于资源配置,技术进步驱动并不显著,但10余省市自治区技术进步对生态效率的驱动作用正在增强。     

Optimal Control of Selling Channels for an Online Retailer with Cost‐per‐Click Payments and Seasonal Products

The problem studied in this paper is a predigestion of the decision faced by online retailers (etailers) that advertise on publisher or comparison‐shopping websites. An etailer may sell its product not only through its online and bricks‐and‐mortar stores, but also through the websites of one or more third parties (e.g., Yahoo.com). However, the etailer has to pay a certain amount to such third parties in an action‐based payment scheme, such as a cost‐per‐click (CPC) scheme. Under the CPC scheme, payment is based solely on click‐throughs, which means that the etailer pays only when a shopper clicks through to the product page of its website. Only a fraction of such clicks lead to actual sales. The extra cost that is associated with shoppers who first click through to the third‐party websites makes them less attractive as customers than those who directly visit the etailer's online store. Moreover, the CPC rate for a prominent placement is normally set by competitive bidding, and thus varies over time. Therefore, the etailer needs to decide dynamically whether or not to list on a third‐party website. The structural properties of the optimal policy are discussed, and numerical examples are given to show the revenue impact of dynamic listing control.     

论我国海洋区域管理模式下的政府间协调机制构建

我国海洋综合管理在实施区域管理模式的大背景下,跨行政区域涉海主体间的管海用海矛盾逐渐突出,协调好区域内各类涉海主体间特别是各层级海洋管理主体之间的关系是我国海洋区域管理成功的关键,这就要求通过借鉴国外先进管理经验、进一步完善区域海洋管理的制度环境建设、构建激励和约束机制等措施,构建一套完善的政府间海洋管理行为协调机制。     

Optimization and Coordination of Fresh Product Supply Chains with Freshness‐Keeping Effort

We consider a supply chain in which a distributor procures from a producer a quantity of a fresh product, which has to undergo a long‐distance transportation to reach the target market. During the transportation process, the distributor has to make an appropriate effort to preserve the freshness of the product, and his success in this respect impacts on both the quality and quantity of the product delivered to the market. The distributor has to determine his order quantity, level of freshness‐keeping effort, and selling price, by taking into account the wholesale price of the producer, the cost of the freshness‐keeping effort, the likely spoilage of the product during transportation, and the possible demand for the product in the market. The producer, on the other hand, has to determine the wholesale price based on its effect on the order quantity of the distributor. We develop a model to study this problem, and characterize each party's optimal decisions in both decentralized and centralized systems. We further develop an incentive scheme to facilitate coordination between the two parties. Computational results are reported to show the effects of freshness‐keeping efforts.     

反向正断层在松辽盆地南部油气聚集中的作用

油气勘探的实践成果表明，我国绝大多数含油气盆地中油气藏的形成和分布受断层分布的控制。通过对两井东—木头南区扶余油层石油地质特征、已提交探明储量区及有利区块预测结果表明，研究区通过以西南为主要物源方向的三角洲前缘砂体与北北西断层垂直或者高角度斜交的大型反向正断层的有效匹配，形成了邻凹侧具有有利富油的条件。分别通过对反向正断层形成的机制及背景、研究区发育分布特征、以及反向正断层聚油机理–模式进行研究表明，反向正断层对油气的聚集与分布有以下控制作用：控制油气聚集的类型、控制油气富集的程度、控制油气聚集的层位、控制油气聚集的部位，为今后油气勘探开发工作指明了方向。     

网络商店满意度影响因素的实证分析

互联网环境下,人们的消费方式和消费习惯在不断发生变化,越来越多的消费者习惯于通过网络购买商品,网络商店已经成为一种消费者普遍接受的零售业态,并且网络商店之间的竞争程度在不断加剧.消费者网络购物满意度是影响网络商店保持竞争地位和获得竞争优势的关键因素.文章首先通过小组座谈和文献分析,总结出28个影响网络商店满意度的因素;其次通过因子分析提炼出7个因子;最后运用多元回归分析确定了7个因子的重要性程度.这些影响网络商店满意度的因素按照重要性程度从高到低依次是,网站安全/保密性、服务质量、产品质量、个性化服务、产品价格、网站易用性/便利性、网站页面设计.文章还提出了提升网络商店满意度的对策建议.