产业集群知识创新系统失效及治理研究--基于声誉及信息传递视角

本文从知识溢出的双面效应、知识价值评估困难、知识同质化风险3个方面,对产业集群知识创新系统的失效原因进行了深入研究,在此基础上,提出了声誉治理机制,并运用博弈模型,对声誉及信息传递在产业集群知识创新系统失效治理中起到的关键作用进行了定量化分析。分析结果表明,声誉机制能够有效抑制知识溢出和知识价值评估困难导致的机会主义行为,并且通过集群内的信息传递,达到声誉的充分传播,不但强化了声誉在知识创新系统中的作用,而且使企业在系统中可以有更多的协同伙伴选择,降低路径锁定和知识同质化的风险。     

大理白族传统院落式民居的解析与模式语言

本文在建构学和类型学的视野下,对大理白族传统院落式民居进行了研究与剖析,试图找出其各要素之间的基本关系及其平面形制的衍变;并在此基础上引入C·亚历山大的模式语言理论体系为理论基础,总结归纳了大理白族院落式民居的几种模式语言,希望能将这样的一些基本关系及模式语言运用在实际项目上,为现代地域性建筑创作做一些基础研究的支撑。     

信息网络传播权立法限制论析

限制网上版权的滥用 ,必须首先了解我国信息网络传播权立法限制的背景 ,国外限制网上知识产权的理论及我国限制知识产权滥用的现状 ,探讨信息网络传播权保护偏高的动因与立法限制的依据。     

Missing information,inferences, and evaluations

Research has shown consumers either form inferences to fill in missing information or adapt processing to accommodate missing values. This article illustrates that processing may influence which attributes are deemed necessary for the choice task and consequently inferred and that attribute-based processing,leads to inference use. The article also tests a framework that incorporates missing information, processing, inference use, and evaluation variables into a single parsimonious model that shows (1) the effects of missing information on processing and inference use and (2) the effects of inference use on evaluations. The model incorporates a link between processing and inference use that may help explain mixed results regarding the degree and direction of impact of missing information on evaluations. Finally, it explores other variables such as missing information overlap, product familiarity and importance, and attribute type that may also influence inference use.     

偏最小二乘神经网络在建筑造价预测中的应用

偏最小二乘回归方法在提取主成分方面具有很好的解释性,而且可以避免因素之间的多重相关性,提取的成分作为输入变量再用神经网络进行预测仿真,影响因素考虑周全,不用计算工程量,计算速度快,克服了普通神经网络运算量大,样本有限情况下易出现问题的弊端。     

OPTIMAL SELLING RULES FOR MONETARY INVARIANT CRITERIA: TRACKING THE MAXIMUM OF A PORTFOLIO WITH NEGATIVE DRIFT

Considering a positive portfolio diffusion X with negative drift, we investigate optimal stopping problems of the form where f is a nonincreasing function, τ is the next random time where the portfolio X crosses zero and θ is any stopping time smaller than τ. Hereby, our motivation is the obtention of an optimal selling strategy minimizing the relative distance between the liquidation value of the portfolio and its highest possible value before it reaches zero. This paper unifies optimal selling rules observed for the quadratic absolute distance criteria in this stationary framework with bang–bang type ones observed for monetary invariant criteria but in finite horizon. More precisely, we provide a verification result for the general stopping problem of interest and derive the exact solution for two classical criteria f of the literature. For the power utility criterion with , instantaneous selling is always optimal, which is consistent with previous observations for the Black‐Scholes model in finite observation. On the contrary, for a relative quadratic error criterion, , selling is optimal as soon as the process X crosses a specified function φ of its running maximum . These results reinforce the idea that optimal stopping problems of similar type lead easily to selling rules of very different nature. Nevertheless, our numerical experiments suggest that the practical optimal selling rule for the relative quadratic error criterion is in fact very close to immediate selling.     

哈尔滨市逆向物流发展现状及建议

随着政府及顾客环保意识的加强和绿色物流的提出,逆向物流开始逐步引起国外一些发达国家的重视,越来越多的企业构建起有效的逆向物流体系。近几年来,在中国,逆向物流也引起了越来越多的关注。目前,遵循循环经济思想,打造"低消耗、高利用、低排放"的资源循环型城市,已经成为国家和各级政府的重要议题。因此有必要借鉴国外发展逆向物流的成功经验,找到制约我国城市逆向物流发展问题所在,并研究保障城市逆向物流系统有效运行的发展对策。     

生产企业构建电子废弃物逆向物流的动因与规制

随着经济的发展,我国电子废弃物数量急剧上升,并对生态环境造成巨大的破坏。电子废弃物逆向物流的实施可以带来巨大的经济效益。在上述背景下,对生产企业构建电子废弃物逆向物流系统的动力机制进行分析,并给出相应的政策建议有一定的现实意义。     

逆向物流的管理策略研究

给出了逆向物流的常见定义,分析了了逆向物流的不确定性、高成本和运作复杂性的特征,提出从分层次实施逆向物流目标、灵活利用第三方物流外包和正向化管理三个方面管理逆向物流的策略。     

循环经济模式下物流体系的构建

循环经济所倡导的是一种与环境和谐的经济发展模式。循环经济理念下的逆向物流系统构建,是弥补市场外部效应的政府干预方式,但是现行我国逆向物流的发展仍然面对许多亟待解决的问题。推进我国逆向物流发展,必须制定、完善环境保护法律、法规,促进排污许可权市场交易。加强逆向物流理论研究,培养相关专业人才,积极推进企业逆向物流相关技术创新,积极引入第三方物流企业。