原油价格变动对中国与西方发达国家经济增长影响的比较研究

本文通过比较原油价格变动对中国与西方发达国家经济增长影响,建立了原油价格变动影响经济增长的国际传导机制模型,研究结论包括:(1)当期原油价格上涨对中国经济增长率有显著的负向影响;(2)当期原油价格上涨对西方七国增长率有正向影响,不过这个结论在统计上不显著;(3)滞后1、2期的原油价格上涨对当期西方国家经济增长率有显著的负向影响;(4)当期中国经济结构变动在5%的显著性水平下影响中国经济增长率,在10%的显著性水平下影响西方七国经济增长率;(5)中国经济增长率对西方国家的经济增长有长期的正向影响,影响时间持续3年以上;(6)西方七国经济增长对中国经济增长有负向影响,影响时期持续两年以上。根据上述结论本文认为稳定的原油价格是中国和西方国家的共同责任,因为彼此的利益已经如此紧密相联。     

基于UPSD32xx的串口-以太网转换器设计

本文详细地说明了基于UPSD32xx控制器与RTL8019AS芯片实现串口和以太网互连的过程,并在此基础上研究了转换器参数配置的几种方法,使得我们可以根据实际需要选择最佳的配置方法来完成我们各种通信参数的设置工作,从而满足大众化的需求。     

Conceptualising children as sexual beings: pre-colonial sexuality education among the Gĩkũyũ of Kenya

Based on oral history accounts elicited from 25 G?k?y? elders in Kenya, this paper describes a non-penetrative sexual practice, ngweko, permitted for the sake of pleasure and sexual release among circumcised and unmarried young people in the G?k?y? community. Lessons that can be learned from the pre-colonial G?k?y? sexuality culture are identified, and possible implications for contemporary sexuality education explored.     

《太阳帝国》中的中国形象分析

英国作家詹·格·巴拉德在《太阳帝国》中塑造了沉默的中国人形象,他对战争阴霾下的上海的描写,是为了借对"他者"的否定和批判肯定自身。巴拉德对中国形象的塑造采取了意识形态化的策略,在他建构的中国形象背后,则是对自身民族身份的认同困惑,还有隐蔽的帝国主义思想和殖民意图。     

一种远程无线身份认证装置

本装置是综合运用3G技术、指纹识别技术和嵌入式技术等研发的一种远程无线身份认证系统。用3G通信方式可以不受位置的限制,比Internet方式更灵活,且3G带宽比普通的RJ45接口网络连接速度更快。本装置成本低廉,安全可靠,实用性强,具有广泛的应用和推广价值。     

修正的Volterra格子方程的精确解

对G'/G展开法进行了扩展,并将该方法应用到非线性差分微分方程的求解领域,通过借助符号计算系统Mathematica,得到了修正的Volterra格子方程的多组含参的新的精确解,包括双曲函数解、三角函数解和有理函数解.     

应用（G′G＋G′）展开法求解非线性发展方程

利用（ G′G＋G′）展开法,借助Maple软件的符号运算功能,研究了BBM方程和Burgers-BBM方程,获得了BBM方程和Burgers-BBM方程的与现有文献不同的精确解,从而丰富了解的范围。     

Information ambiguity,patents and the market value of innovative assets

Research and development (R&D) is often essential for firms’ profitability and growth. At the same time, R&D is long-term and risky. We show that innovation activities lead to information ambiguity about the future value of firms’ assets. This effect appears to be more pronounced for small and less reputed firms. Information ambiguity further lowers firms’ market value and, in particular, the market value of innovative assets. We further show that high quality patents mitigate the negative effect of information ambiguity to some extent.     

Attracting solutions in crowdsourcing contests: The role of knowledge distance,identity disclosure,and seeker status

We investigate in the context of crowdsourcing how seekers can increase open innovation performance, measured as received solver attention, by making two strategic decisions: selecting innovation tasks that are well suited for crowdsourcing and choosing between the potentials of status signalling through identity disclosure versus enjoying the benefits of anonymity. Drawing on uncertainty reduction theory, we suggest that a well-articulated problem statement reduces uncertainties of potential solvers and increases their willingness to participate. We argue that the ability of seekers to draft high-quality problem statements depends on the distance between the problem domain and their current knowledge stock. An analysis of 637 crowdsourcing projects finds that problem-seeker knowledge distance and received solver attention are curvilinear related such that moderate levels of knowledge distance maximize solver participation. However, high-status seekers who engage in identity-based status signalling are able to benefit from crowdsourcing across all levels of problem-seeker knowledge distance.     

More is not always better: Effects of collaboration breadth and depth on radical and incremental innovation performance at the project level

This study investigates the effect of project-level collaboration breadth (i.e., the number of collaboration partner types) and collaboration depth (i.e., the intensity of the interactions with these partners) on the incremental and radical innovation performance of innovation projects. The econometric analyses, based on a Community Innovation Study sample of 218 innovation projects conducted in German manufacturing companies, reveal inverted U-shaped relationships between collaboration breadth and radical innovation performance and between collaboration depth and incremental innovation performance. These curvilinear effects speak to the high sensitivity of innovation projects to the extent of collaborative activity, which implies that practitioners should exert caution in managing collaborative innovation projects. This study contributes to the understanding of project-level open innovation and to the overall understanding of the performance effects of innovation collaboration, which, following recent assertions in the literature, could be flawed by analyses conducted at the organizational level.