混合集成电路STR-S6708A工作原理

本文对电视机常用电源ICSTR-S6708A及开关电源工作原理进行了分析。     

《F1速报》关于F1中国大奖赛的报道特点分析

《F1速报》是目前我国最有影响力的赛车运动专业杂志,文章对《F1速报》关于F1中国大奖赛的专题报道进行研究。结果表明,《F1速报》从创刊至今的7年多时间当中,对F1中国大奖赛的报道无论是从报道力度、报道规模、报道内容的广度和深度,以及报道的后续影响力方面,都有了长足的进步。以《F1速报》为代表的赛车类专业体育媒体的迅速发展,对F1运动在中国的推广起到了巨大的推动作用。     

Knowledge protection strategies of multinational firms—A cross-country comparison

International knowledge spillovers, especially through multinational companies (MNCs), have recently been a major topic of discussion among academics and practitioners. Most research in this field focuses on knowledge sharing activities of MNC subsidiaries. Relatively little is known about their capabilities for protecting valuable knowledge from spilling over to host country competitors. We extend this stream of research by investigating both formal protection strategies (e.g. patenting) as well as strategic ones (secrecy, lead time, complex design). We conceptualize the breadth of firm's knowledge protection strategies and relate it to the particular situation of MNC subsidiaries. Moreover, we argue that their approaches differ with regard to host country challenges and opportunities. We address these issues empirically, based on a harmonized survey of innovation activities of more than 1800 firms located in Portugal and Germany. We find evidence that MNCs prefer broader sets of knowledge protection strategies in a host country with fewer opportunities for knowledge sourcing (Portugal). In Germany, though, they opt for narrower sets of knowledge protection strategies if they invest in innovation activities themselves. We deduce that these results are due to a need for reciprocity in knowledge exchanges to benefit fully from promising host country knowledge flows.     

The role of ICT knowledge flows for international market share dynamics

This paper investigates the role of Information and Communication Technologies (ICTs) related knowledge flows for international market shares. Using bibliometric data on scientific publications, we analyse the relationship between the strength of 14 OECD countries in four ICT-related scientific fields and the ability of those countries to maintain and acquire export market shares in the OECD market, across 16 manufacturing industries over the period 1981-2003. We find that domestic and foreign ICT-related scientific knowledge flows have a positive and significant impact on export market shares in ICT industries, while only domestic flows positively affect export shares in non-ICT industries. We also find that small open economies benefit more than other countries from foreign knowledge flows both in ICT and in non-ICT industries.     

基于MC55远程便携报警系统的研制

分析市场现有报警仪器的缺点,介绍了一种基于增强型微控制器C8051F020控制GSM引擎对远程、便携式报警系统的成功实现.从电源部分、传感器部分、微控制器部分、GSM无线模块等硬件部分和软件部分分别进行了详细的论述.     

DSP芯片SCI模块在电力电子控制装置中的应用

TMS320F28335是52位浮点DSP（数字信号处理器）芯片,在电力电子装置中的应用日益广泛。本文介绍了利用DSP芯片的SCI（串行通信接口）模块与Visual Basic中的MSComm控件在电力电子控制装置中实现符合IEC60870-5—101规范的串行数据通信方案。该方案可应用于多种基于DSP的电力电子控制装置与上位机间的数据交换。在实际环境下运行表明谈方案简单有效、移植方便,便于系统的开发与调试,具有较强的实用性。     

AC-13F型沥青混合料目标配合比设计实例

文章对AC-13沥青混合料目标配合比进行了分析设计计算,并对其性能进行了验证,指出其可作为沥青混合料目标配合比设计的一般过程加以参考。     

基于DSP的软开关电源的研究

开关电源广泛应用于航空、通信、交通等领域。随着高频技术、谐振技术的发展,全桥移相软开关电源广泛应用于低压、大电流开关电源领域,因此有必要对其进行研究。本文介绍了以高性能数字信号处理器TMS320F2812为控制核心的逆变电源控制系统的软硬件设计。     

1933年庄士敦的儒学演讲及其对儒学的认知

从1898来华工作到1930年归国,庄士敦在华时间长达30余年,长期的在华生活使得庄士敦对儒家思想产生了浓厚兴趣,甚至按《论语》“士志于道”之意为自己取字“志道”。1934年,庄士敦出版演讲集《儒学与近代中国》,在这部书中,庄士敦站在捍卫儒学的立场,系统论述了对儒学的认知,尤其对儒家教育思想、孝道、祖先崇拜进行了深刻剖析;同时,对儒学是否为宗教及儒学的特质等论题发表了自己的见解。     

罗斯福印度支那国际托管计划的文化价值因素分析

1942—1944年夏,罗斯福对印度支那的政策是反对法国重返该地区,主张将这一地区置于国际托管之下。但是由于国内外因素的影响和制约,使罗斯福不得不从现实主义考虑,最终放弃了这一计划。印度支那国际托管计划是受到美国理想主义中反殖民主义思想的影响和对战后世界规划的需要而提出的。虽然不可否认其带有某些反殖民主义的特征,但是从该计划的放弃可以证明,现实主义价值观显然是罗斯福印度支那政策的主导。