中日农产品贸易竞争力分析

日本是中国最大的农产品出口国,在我国整体的农产品贸易中占有举足轻重的地位。本文通过农产品的国际竞争力及显示性比较优势等指数的测算评价了中日农产品贸易,进行了结果分析,并讨论了两个指数之间的联系。最后,根据分析的结果提出了提高中日农产品贸易的建议及对策,具有一定的指导意义。     

关于中国基本养老保险空账问题的研究

经过多年的改革,我国逐步建立了“统账结合”基本养老保险制度。该制度既吸收了传统型的养老保险制度的优点,又借鉴了个人账户模式的长处；在强调保障的同时又兼顾效率。但是由于存在改革以前就已经退休的“老人”和改革前就已经参加工作的“中人”,他们的个人账户实际余额或者为零或者严重不足。但是仍然要给他们足额支付养老金。这使得养老金个人账户存在严重的“空账运转”问题。为此,应从个人缴费来入手探讨解决空帐问题办法。     

政府话语权：流失、分散与重构——基于微博的考察

随着网络技术的发展,以微博为代表的新媒体时代已经来临,成为影响政府话语权的重要因素。政府掌握着网络话语权的主导权,但由于民众权利意识觉醒、政府信息公开程度较低、政府难以及时回应、政府信息的发布“不接地气”等使得政府与民众的互动不足,网络话语平权使得政府话语权被分散、流失。政府在网络话语权的争夺中要加大信息公开的力度,正确对待网络言论,打击与疏导并重,建立政务微博运营团队,转变对话方式,将单向传递改为多向互动。     

关于牛顿力学完备性几个问题的诠释

结合对牛顿力学中常见几个疑问的诠释 ,分析了牛顿力学逻辑体系的内在关系。     

哲里木盟冬小麦试验初报

在哲里木盟四个旗县进行了2个品种冬小麦栽培试验，结果表明：苏引6号666．7米2平均产量达289．6公斤，试验效果较好，可在哲盟地区扩大种植。     

中国与现代奥运

概述奥林匹克运动的主旋律——现代奥运会的创立发展与中国对奥林匹克运动的贡献     

Half-sample variance estimation

This paper studies an alternative to the jackknife variance estimator, the half-sample variance estimator. Both theoretical and Monte Carlo comparisons between the half-sample variance estimator and the jackknife variance estimator indicate that the former is better in some situations.     

Exploration Deep Into the Artistic Realm of Peace——He Yu’s Oil Paintings

The basic intention of realism oil painting is to present as closely as possible the original form of each object without bias or personal opinion, using pictorial simulation techniques such as points, lines,zones and colors.In order to reproduce the object’s original form or to simulate it as faithfully as he can,the     

教育短期行为与青少年社会化

在分析教育短期行为及其表现的基础上,论述了教育短期行为对青少年社会化的影响,并从学生品格养成、师资队伍建设、教育经费投入、教育结构调整等角度提出了解决教育短期行为的相关对策。     

Inference for Time Series Regression Models With Weakly Dependent and Heteroscedastic Errors

Motivated by the need to assess the significance of the trend in some macroeconomic series, this article considers inference of a parameter in parametric trend functions when the errors exhibit certain degrees of nonstationarity with changing unconditional variances. We adopt the recently developed self-normalized approach to avoid the difficulty involved in the estimation of the asymptotic variance of the ordinary least-square estimator. The limiting distribution of the self-normalized quantity is nonpivotal but can be consistently approximated by using the wild bootstrap, which is not consistent in general without studentization. Numerical simulation demonstrates favorable coverage properties of the proposed method in comparison with alternative ones. The U.S. nominal wages series is analyzed to illustrate the finite sample performance. Some technical details are included in the online supplemental material.