基于响应面法的换流变压器励磁涌流峰值快速计算分析

为解决传统数值法和软件仿真法求解变压器励磁涌流存在模型参数固定、效率低下等问题,提出将响应面拟合计算方法运用在换流变励磁涌流的计算中,实现考虑到主心柱在不同剩磁的条件下的励磁涌流峰值随合闸角变化的高效计算分析.理论分析变压器励磁涌流的产生机理,提取出关键影响因素,采用参数建模建立换流变压器模型,通过响应面试验设计拟合绕组初始电流、合闸角和励磁涌流峰值之间的响应面模型,并验证响应面的精度.研究成果可为变压器励磁涌流快速计算分析、电力变压器数字孪生技术提供技术参考.     

企业科研诚信现状调查与分析

近年来,高新技术企业资质被取缔、利用研发费用加计扣除偷逃税等事件频发,暴露出企业科研诚信的缺失.通过调查问卷方式,从企业科研诚信的能力、认知和管理三个维度对187家科技型企业样本进行数据统计和对比分析,摸清了企业科研诚信的现实情况,针对这一情况提出了加强企业科研诚信建设的对策建议,以期提高企业科研诚信管理水平,规范科技工作者的科研行为,营造风清气正的科研环境.     

一项关于农村五保供养制度的实证研究——以闽北地区为例

农村五保供养制度是一项具有中国特色保障鳏寡孤独残疾人基本生活权益的制度,也是我国农村社会保障体系的重要组成部分。在实地调查的基础上,分析了闽北地区农村五保供养的现实状况,提出了未来建设农村五保供养制度的若干思路。     

Sustainable and Excessive Current Account Deficits

Both the Mexican crisis of 1994–95 and the Asian financial crisis of 1997–98 have been preceded by large current account deficits run by the affected economies. External deficits are often assumed to play an important role in the propagation of financial crises in emerging markets. Policymakers are faced with a new challenge: that of resisting or accepting the large current account deficits that may result from heavy private capital inflows. This paper aims at providing some guidance:First, the Lawson Doctrine – according to which current account deficits that result from a shift in private-sector behaviour should not be a public policy concern – has been discredited by recent currency crises in Latin America and Asia. Second, define the size of current account deficits that should be sustainable in the long run. Third, the intertemporal approach to the current account does not provide a reliable benchmark to define when deficits become excessive. Fourth, large external deficits should be resisted if unsustainable currency appreciation, excessive risk-taking in the banking system and a sharp private spending boom are seen to coincide.     

关于克隆技术社会意义的伦理思考

克隆技术早已“沸沸扬扬”,但是我们并未揭开它那似明非明的“面纱”,要识其“庐山真面目”,远非指日可待。但“克隆”的备受关注 ,表明科学本身影响力在扩大、科学在发展 ,更为重要的是表明人类对“自我”的认识在深化。     

变电站扩大内桥主接线的二次回路分析

为使变电站达到可靠性、功能性和经济性要求,人们常采用内桥接线作为电网终端变电站项目的电气主接线。对此,要求技术人员在变电站的设计过程中,充分考虑终端变电站的特点,认真分析电气二次电流回路、电压回路和备自投逻辑回路的特点,使其满足变电站的运行维护及扩建要求。     

中资保险中介发展现状及其SWOT分析

文章首先分析我国中资保险中介的发展现状：起步晚,成长快;机构盈利状况不佳,但情况向好;机构地理布局不合理,机构新设速度放缓;专业中介机构业务占比小。而后运用SWOT分析,指出我国中资保险中介目前存在的优势、劣势、机会和挑战,据此提出相关的策略建议。     

基于国际化视野的融资融券业务思考

文章通过对2008—2012年间券商经营收入的研究分析和券商主要业务的收入比较,以揭示目前融资融券业务在券商经营中的地位。并通过分析融资融券业务收入占券商经营总收入的比重变化趋势,结合日本、美国等成熟市场数据来预测未来融资融券业务的发展趋势和前景,并提出一些政策上的建议。     

External adjustment

Gross stocks of foreign assets have increased rapidly relative to national outputs since 1990, and the short-run capital gains and losses on those assets can amount to significant fractions of GDP. These fluctuations in asset values render the national income and product account measure of the current account balance increasingly inadequate as a summary of the change in a country's net foreign assets. Nonetheless, unusually large current account imbalances, especially deficits, should remain high on policymakers' list of concerns, even, for the richer and less credit-constrained countries. Extreme imbalances signal the need for large and perhaps abrupt real exchange rate changes in the future, changes that might have undesired political and financial consequences given the incompleteness of domestic and international asset markets. Furthermore, of the two sources of the change in net foreign assets—the current account and the capital gain on the net foreign asset position—the former is better understood and more amenable to policy influence. Systematic government attempts to manipulate international asset values in order to change the net foreign asset position could have a destabilizing effect on market expectations. JEL no. F21, F32, F36, F41     

心理咨询技术对高校辅导员工作的启示

近年来,大学生群体中出现了许多新问题。辅导员在工作中适当借鉴心理咨询的方法,如尊重、热情、真诚、共情、积极关注、面质等,会更好地解决学生的问题,建立良好的师生关系。