国家创新型企业政策对企业绩效的影响——“信号”抑或“扶持”作用？

创新型企业建设是我国创新型国家体系建设的重要保障。文章通过手工收集整理国家创新型企业中的上市公司名录，以2003-2017年A股上市公司为样本，采用处理效应-三重差分模型，分析政策对企业绩效的作用效果及其影响机理。结果表明：国家创新型企业政策不仅短期内促进企业创新和经济绩效增长，且表现为长期增长效应，亦不受高新技术企业政策干扰。机制分析中，政策"扶持"作用下的创新人才投入、政府补助支持以及重点实验室平台建设作用依次减弱，其次为政策"信号"作用下的信贷融资约束压力缓解和市场竞争力提升，效果最弱的为"扶持"作用下的税收优惠举措，说明政策作用下的直接创新要素资源供给效应最为有效，间接的税收优惠举措和信号作用促进效应相比有所不足。     

Marketing Intelligent Systems for consumer behaviour modelling by a descriptive induction approach based on Genetic Fuzzy Systems

In its introduction this paper discusses why marketing professionals do not make satisfactory use of the marketing models posed by academics in their studies. The main body of this research is characterised by the proposal of a brand new and complete methodology for knowledge discovery in databases (KDD), to be applied in marketing causal modelling and with utilities to be used as a marketing management decision support tool. Such methodology is based on Genetic Fuzzy Systems, a specific hybridization of artificial intelligence methods, highly suited to the research problem we face. The use of KDD methodologies based on intelligent systems like this can be considered as an avant-garde evolution, exponent nowadays of the so-called knowledge-based Marketing Management Support Systems; we name them as Marketing Intelligent Systems. The most important questions to the KDD process-i.e. pre-processing; machine learning and post-processing-are discussed in depth and solved. After its theoretical presentation, we empirically experiment with it, using a consumer behaviour model of reference. In this part of the paper, we try to offer an overall perspective of how it works. The valuation of its performance and utility is very positive.     

正交频分多路（OFDM）的实现方式及性能分析

本文简述了ＯＦＤＭ的两种实现方式，比较了各自的优缺点，并对其中一种方式做了改进，指出了改进后的ＯＦＤＭ能更好的克服多径干扰的原因，最后对ＯＦＤＭ可以应用的领域进行了介绍。     

低频超宽带SAR原理和技术问题

本文介绍了低频超宽带合成孔径雷达的工作原理和技术。说明了开展研究工作的必要性。     

水质分析化学课程教学改革探讨

提高水质分析化学课程教学质量可采用多样化的教学手段,精简教学内容,加强专业课程和实践相结合,改革实验教学和考核方式.     

It’s only words: idiom processing,language knowledge and consumer memory of Chinese print advertisements

This study investigated the effects of employing Chinese idioms in headlines on consumer memory. The results indicated that, as hypothesized, the use of idiomatic headlines in print advertisements produced superior aided recall of headlines and recognition of brand names than employing non-idiomatic headlines. High language knowledge individuals also had greater aided headline recall and brand name recognition. However, this knowledge advantage was only observed for advertisements with idiomatic headlines. Aided headline recall generally mediated brand name recognition. Finally, the language knowledge results were robust across different knowledge measures.     

电梯重点项目分包商评价方法

本文利用层次分析法评价电梯重点项目分包商综合素质,建立适用于电梯安装工程的评价指标体系,同时依据不同的项目类型做出指标权重调整,文中提供实例验证该方法的有效性和可行性。     

中国与墨西哥加工贸易比较分析

中国自加入WTO后在美国市场进口品的占有率方面和一些产业的竞争力上已经超过了墨西哥,但中国整体出口产品价格低于墨西哥同类产品,预示着中国出口产业包括品质在内的整体竞争力略逊于墨西哥。另外,在汽车等相关产业的竞争力方面仍然无法与墨西哥抗衡。随着中国劳动力价格的逐步上涨和人民币升值等情况的出现,中国加工贸易必须进行转型升级,否则有可能在这方面被墨西哥等国家所取代。     

HOW MUCH DO EXPORTS CONTRIBUTE TO CHINA'S INCOME GROWTH?

It is a widespread belief that exports, in particular of ‘high-tech’ products, contribute much to China's income growth. This study addresses this issue by applying a structural decomposition analysis to input–output (I–O) data. We employ two extended I–O tables that distinguish processing trade from ordinary exports. The contribution of exports to the value-added growth from 2002 to 2007 is found to be overestimated by 32% when standard I–O tables are used rather than the extended I–O tables. Even more strikingly, the value-added growth that may be attributed to the exports of ‘high-tech’ telecommunication products is overestimated by no less than 63%. A serious overestimation of the contribution to income growth of certain products (such as high-tech products) sends out misleading signals to policymakers. When measured correctly, the true contribution appears to be substantially smaller than is generally believed to be.     

上海市加工贸易对经济增长的影响分析

加工贸易已成为上海市对外贸易中的重要组成部分,其对上海的经济增长具有一定的促进作用,同时促进了产业升级、技术进步等。本文通过运用加工贸易增值率、加工贸易对上海市GDP的贡献率和拉动度、协整分析等方法分析了上海市加工贸易对经济增长的影响。分析结果表明:上海市加工贸易增值率高于全国水平;加工贸易对经济增长的贡献率和拉动度呈增长趋势;加工贸易出口对上海市经济增长有很大的促进作用。