TM_(010)模圆柱腔GUNN振荡器

本文论述了 TM_(010)模式圆柱腔 GUNN 振荡器的理论基础、设计原理与使用特点。这种振荡器在微波技术中作为中精度、小功率信号源在测量、雷达、微波通信、卫星通信以及微波报警器等方面有广泛的应用。     

新疆高校中亚留学生汉语学习需求调查研究——以新疆大学为例

采用问卷调查的方法,以新疆大学国际文化交流学院中亚留学生为调查样本,对其汉语学习需求进行了探索性实证研究,得出以下主要结论：中亚留学生汉语水平的目标主要分为初级和中高级两个层次,应细化学生需求,提供区别性教学对策。中亚留学生汉语学习时间较短,应采用速成强化教学模式。汉字占用了过多的学习资源,应采用“语文分开、集中识字”的教学模式。中亚留学生汉语学习符合二语习得一般规律,应加强泛读课型和习得性教学活动的研究。新疆对外汉语教学与中亚留学生的目标需求之间存在着差距,应加强教学资源的建设。     

必然、实然与应然：高校法律援助机构服务社会研究

高校法律援助机构的建立缓解了法律援助供需矛盾,但其发展过程中存在诸多亟待解决的问题,如自身管理混乱、经费不足、当事人不信任等。在分析了高校法律援助机构要服务于社会的必要性和可行性的基础上,通过对高校法律援助机构现状及弊端的研究,提出要加强高校法律援助机构服务社会的具体措施,包括完善相关立法、引进实习律师或高年级取得律师职业资格证的学生、规范其设立程序、确立双层管理体制及与社会组织合作等,以建立服务社会型高校法律援助机构。     

流动性资产定价理论与实证研究

由于交易成本、市场摩擦等因素的影响,资产价格偏离标准资产定价理论的预期,产生了流动性溢价。非流动性产生的来源、机理、性质引起学术界持续的兴趣,尤其是非流动性对最优消费和投资策略,资产价格和收益,以及风险溢价的影响成为资产定价领域里最具有挑战性的课题之一。本文从理论和实证两个方面对探讨流动性与资产价格之间关系的文献进行了简要回顾。     

Optimal Digital Rights Management with Uncertain Piracy

Many firms that sell digital copies of copyrighted materials online face a common dilemma: the use of digital rights management (DRM) to impede pirates can impose restrictions on legitimate use. We introduce a two‐period model in which the use of DRM in the first period affects the probability that a consumer finds a pirated copy in the second period; the threat of legal action reduces consumers’ consumption of pirated copies; and firms choose whether to sell, and at what prices, either strongly or weakly DRM‐protected products, or both. Furthermore, we incorporate the role of uncertainty concerning future levels of piracy. Using a two‐period model with uncertainty, we investigate a firm's optimal DRM strategies and present the optimal pricing strategy as well as product launch strategy under different market conditions. We find that one important characteristic of the optimal strategy is that it is optimal to maintain the same product line configuration strategy for both periods. We also characterize the conditions under which each strategy is optimal.     

OEM product design in a price competition with remanufactured product

An original equipment manufacturer (OEM) produces new products and often faces a dilemma when determining the level of interchangeability in its product design. The interchangeability is considered as a degree to which the product can be disassembled without force, and thus an increasing degree of interchangeability would decrease the OEM's production cost, but it would also lower a remanufacturer's cost in cannibalizing used items. Decreasing the level of interchangeability to deter the remanufacturer, on the other hand, would simultaneously increase the production costs of the OEM. We thus formulate a two-period supply chain model consisting of two chain members, an OEM and a remanufacturer, to investigate the product design decision of the OEM and both chain members' competitive pricing strategies. We then characterize the equilibrium decisions and profits with regard to costs and consumers' preference for the remanufactured product. We also evaluate a strategic game in which the OEM chooses the degree of interchangeability, and the remanufacturer determines its collection strategy. We find that the product-design strategy is effective for the OEM in competing with the remanufacturer, but it is not necessarily harmful to the remanufacturer.     

应用EMME／2宏语言执行道路定价模型

香港的交通拥挤非常严重，而且好像并不能通过增加道路容量来解决，考虑到大多数拥挤地区空间的限制和增加道路容量所导致的潜在需求，交通规划人员和经济专家们为解决交通拥挤问题，已经把他们的注意力从交通供方面转移交通需求上。道路定价方法可构成交通需求管理战略的一部分，为交通拥挤问题提供了一个有效、公平、灵活的解决方案。香港特共政府已指定了一个咨询机构，来调查电子道路定价系统的需求，以及执行后的社会反应，为了     

兰白经济区新型城镇化发展模式研究

通过深入分析新型城镇化的本质内涵,基于兰白经济区推进新型城镇化的自身需求、政策支撑和现实基础,提出了兰白经济区新型城镇化发展的三大模式。分别为统筹农业现代化与新型城镇化的协调发展模式;以产业集群推动新型工业化和新型城镇化的互动发展模式;中心城市带动,发展沿河沿交通线城镇密集带的空间发展模式。     

北京山区生态农业的功能定位、模式与评价指标体系

北京山区生态农业包括三项基本功能,这就是水资源与环境功能、经济功能和社会文化功能。北京山区在长期的生产实践中,逐步形成了两种类型的生态农业模式:一种是农户生态园式的生态农业模式;另一种是产业化经营式的生态农业模式。北京山区生态农业的评价应从系统结构、系统功能、系统效益三个方面进行整体评价。通过系统评价,择优选择系统结构合理、系统功能较强、系统效益良好的生态农业模式。     

Women’s experiences of decision-making and attitudes in relation to induction of labour: A survey study

BackgroundRates of induction of labour have been increasing globally to up to one in three pregnancies in many high-income countries. Although guidelines around induction, and strength of the underlying evidence, vary considerably by indication, shared decision-making is increasingly recognised as key. The aim of this study was to identify women’s mode of birth preferences and experiences of shared decision-making for induction of labour.MethodAn antenatal survey of women booked for an induction at eight Sydney hospitals was conducted. A bespoke questionnaire was created assessing women’s demographics, indication for induction, pregnancy model of care, initial birth preferences, and their experience of the decision-making process.ResultsOf 189 survey respondents (58% nulliparous), major reported reasons for induction included prolonged pregnancy (38%), diabetes (25%), and suspected fetal growth restriction (8%). Most respondents (72%) had hoped to labour spontaneously. Major findings included 19% of women not feeling like they had a choice about induction of labour, 26% not feeling adequately informed (or uncertain if informed), 17% not being given alternatives, and 30% not receiving any written information on induction of labour. Qualitative responses highlight a desire of women to be more actively involved in decision-making.ConclusionA substantial minority of women did not feel adequately informed or prepared, and indicated they were not given alternatives to induction. Suggested improvements include for face-to-face discussions to be supplemented with written information, and for shared decision-making interventions, such as the introduction of decision aids and training, to be implemented and evaluated.