A methodology to position nations’ efforts in a technology domain with a patent network analysis: case of the electric vehicle domain

When a nation is making strategies in a technology domain, it makes sense to know where the nation is currently in the domain and to know where other nations are as well. This paper presents a method to position nations’ efforts in a technology domain. The method builds a network of International Patent Classifications (IPCs) based on their co-occurrence in patent applications and applies an index called the Revealed Patent Application Advantage (RPAA), which reflects where nations’ efforts have been spent in a technology domain denoted as the IPC network. We applied the proposed method to position the efforts that have been spent in the electric vehicle (EV) technology domain by mainland China, Germany, Japan, and the United States.     

全国经济发展状况的比较分析

近几十年,中国经济实力的不断攀升,经济发展水平向前推进的同时,也产生了地区发展不平衡的问题,为了实现各地区的均衡发展,首先需要了解各地区的经济发展状况,本文即使在此背景下,采用主成分分析法,对中国31个省、自治区和直辖市的主要经济指标进行分析,研究各地区的经济发展水平、公共服务水平和消费物价等,为国家制定平衡发展战略提供量化依据。     

中国粮食重金属污染现状及防控对策

重金属检测一直是人们比较关注的问题,针对粮食中所含有的重金属含量检测更是当前社会发展中的首要任务之一。粮食重金属污染不仅威胁着人们的身体健康,还会给国家经济发展造成影响。本文首先分析了重金属污染粮食的特征,并论述了当前粮食重金属污染的状况,并在此基础上提出了重金属污染粮食和食品防控对策。     

ESTIMATION OF CENSORED PANEL‐DATA MODELS WITH SLOPE HETEROGENEITY

This paper considers estimation of censored panel‐data models with individual‐specific slope heterogeneity. The slope heterogeneity may be random (random slopes model) or related to covariates (correlated random slopes model). Maximum likelihood and censored least‐absolute deviations estimators are proposed for both models. The estimators are simple to implement and, in the case of maximum likelihood, lead to straightforward estimation of partial effects. The rescaled bootstrap suggested by Andrews (Econometrica 2000; 68 : 399–405) is used to deal with the possibility of variance parameters being equal to zero. The methodology is applied to an empirical study of Dutch household portfolio choice, where the outcome variable (portfolio share in safe assets) has corner solutions at zero and one. As predicted by economic theory, there is strong evidence of correlated random slopes for the age profiles, indicating a heterogeneous age profile of portfolio adjustment that varies significantly with other household characteristics. Copyright © 2013 John Wiley & Sons, Ltd.     

Inflation Targeting in ASEAN‐10

The paper addresses the empirical question of whether economies that do not systematically target inflation (non‐inflation targeters) experience higher exchange rate volatility as compared with inflation targeters in 10 countries of the Association of Southeast Asian Nation (ASEAN) from 1990 to 2010. The paper examines the role of real exchange rate, exchange rate volatility and the reaction functions of central banks using dynamic panel estimation techniques. The results indicate that the output gap offers more useful information than the inflation gap in setting interest rates for inflation targeters, implying that the real term is more important than the nominal term. In turn, this suggests that an increase in interest rate can be wielded swiftly to reduce real gross domestic product and suppress inflation. The real exchange rate appears as a weaker determinant in setting interest rates for non‐inflation targeters. Inflation targeters experienced lower exchange rate volatility compared with non‐targeters in the ASEAN, which implies that implementation costs to their domestic economies may be marginally lower. Meanwhile, the non‐targeters follow a mixed strategy as both the inflation and real exchange rate are used as instruments to set the interest rates.     

浅谈旋转变频液压推杆制动器在港口门机上的应用

随着近几年港口生产的发展，门座式起重机的应用不断增加，而且逐步向大吨位门机25t以上的方向发展。本文详细阐述了变频液压推杆制动器在门机中的应用，不仅减小了劳动强度而且节约了维修成本。     

The Great Halls of China? Meeting Planners’ Perceptions of Beijing as an International Convention Destination

This research focused on meeting planners’ perceptions about selecting Beijing as an international convention destination. Twenty-three convention destination site selection criteria organized into five categories were identified. It was found that, with respect to Beijing, the importance of site selection criteria has changed since the late 1990s, with meeting planners now attaching more weight to the quality of convention services, quality of convention planning assistance, and city image. The meeting planners who had previously held international conventions in Beijing attached greater importance to research and development cooperation opportunities and choice of accommodations than those who had not. They rated Beijing's performance lower on the convenience of the application process (required by Chinese governments) and government support. It was concluded that Beijing needs to improve most on the quality of convention services and convention planning assistance, and by relaxing government policies related to the holding of international conventions.     

流动性过剩测度的理论探讨和实证分析

首先依据货币分解理论,论证和检验了货币流动性的基础地位。接着,将流动性过剩表示为货币总供给与货币总需求之间的差异,利用计量思想解决了货币需求函数中货币需求量数据缺乏的难题。最后进行了实证检验,结果表明,2008年第4季度我国存在着严重的流动性不足,流动性过剩系数达到-30%,说明美国金融危机对我国具有传导性影响。经过短...     

电子战中的无人机防御措施探讨

近几十年无人机与电子技术得到迅速发展,并在近几次的局部战争中的表现十分突出,引起世界各国极大的重视和投入。结合近期局部战争中的电子战与电子防御战,分析了无人机在电子战中的运用特点与防御难点,重点探讨了在电子战中对无人机的防御措施与方法,最后对未来电子战进行了展望。     

浅谈《企业文化》对职业学生的影响

企业文化,就像一个企业的灵魂一样,凡是发展的好的企业,企业文化一定做的好。作为职业教育的学生,将来要想很好的融入到企业这个团队中去,光有专业知识是不够的,还要好好学习一下什么是企业文化。