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排序方式: 共有542条查询结果,搜索用时 203 毫秒
1.
福建省科技资源配置的现状、问题及对策 总被引:7,自引:3,他引:4
陈舒 《福建农林大学学报(哲学社会科学版)》2003,6(3):36-38
利用翔实的统计数据和资料,从科技人力资源、财力资源、技术资源等方面分析了福建省科技资源配置的现状及存在的问题,并针对存在的问题提出了相应的对策和建议。 相似文献
2.
许谦 《绍兴文理学院学报》2005,25(9):22-26
在确定评价指标体系的基础上,如何对若干事物或方案进行选优是一个十分有意义的问题.作者利用模糊多目标决策对此进行研究,并通过实例说明该方法的有效性与实用性. 相似文献
3.
邓小平独特机遇观是邓小平围绕中华民族几千万海外爱国同胞是中国大发展的独特机遇而提出的一系列理论观点。在邓小平看来 ,几千万海外爱国同胞财力和智力 ,以及他们对祖国的浓厚情感 ,构成中国发展的一种独特的国情 ,而中国社会主义建设对资金和技术的迫切需要 ,又使这种独特国情能够成为一种现实的发展优势。要紧紧抓住这个机遇 ,就必须把几千万海外爱国同胞作为社会主义现代化建设的重要力量来看待 ,制定必要的法律和制度 ,切实保护他们的各种权益 ,从中华民族团结振兴的根本愿望出发 ,吸引他们参加祖国建设。 相似文献
4.
Byung-Joo Lee 《Econometric Reviews》1995,14(1):65-74
This paper studies the estimation of seemingly unrelated regressions (SUR) of singular equation systems with an autoregressive error process (AR(p)) for each equation.Parameter estimates of the autoregressive singular equation system are not generally invariant to the equation deleted. Under the model specification restriction on the autoregressive parameters, the invariance property is preserved, and this paper shows that a single equation generalized least squares (GLS) estimation for a general autoregressive error process is equivalent to the SURGLS estimation of the AR(p) singular equation system. 相似文献
5.
6.
The small sample performance of least median of squares, reweighted least squares, least squares, least absolute deviations, and three partially adaptive estimators are compared using Monte Carlo simulations. Two data problems are addressed in the paper: (1) data generated from non-normal error distributions and (2) contaminated data. Breakdown plots are used to investigate the sensitivity of partially adaptive estimators to data contamination relative to RLS. One partially adaptive estimator performs especially well when the errors are skewed, while another partially adaptive estimator and RLS perform particularly well when the errors are extremely leptokur-totic. In comparison with RLS, partially adaptive estimators are only moderately effective in resisting data contamination; however, they outperform least squares and least absolute deviation estimators. 相似文献
7.
服装制板、打板在实践应用中的探索 总被引:1,自引:0,他引:1
张恒 《吉林工程技术师范学院学报》2006,(8)
从服装企业生产的角度,阐述了服装制板、打板在生产实践中的具体应用。并结合实践经验,分析总结了针对不同情况与要求如何快速、准确、合理地制板、打板,以便为服装生产企业提供优质、方便、快捷的技术服务,促进服装企业的快速发展。 相似文献
8.
独立学院是我国现行高教体制的突破与革新,既不同于传统的公办普通高校,又有别于已有的民办高校和职业技术学院。随着高等教育大众化,面对着竞争愈演愈烈的人才市场,独立学院如何在高等教育竞争中的勇立潮头,赢得一席之地,必须就“独立学院应用性人才培养模式的构建”进行认真的研究与探索,根据社会对人才需求呈现出多样化趋势的实际,找准学院定位,明确办学理念,理清办学思路,创新培养模式,全力打造“应用性”人才。 相似文献
9.
Lotte Glaser Sebastian P.L. Fourné Julia Brennecke Tom Elfring 《Long Range Planning》2021,54(4):102068
Building on recent efforts to bring a socio-political perspective to social capital research, we develop and test a multilevel framework that explains why middle managers who occupy brokerage positions differ in their ability and willingness to engage in entrepreneurial behavior. More specifically, we provide a contextualized understanding of the links among middle managers' brokerage, their political-support ties, and their personal initiative. Results derived from data on 383 middle managers and 72 top managers in 34 business units indicate that political-support ties with top managers strengthen the relationship between middle managers’ brokerage and personal initiative. However, this positive effect depends on the social capital resources available in the focal business unit. It is attenuated in business units with a supportive and trusting social context and amplified in business units with high levels of internal connectedness. By uncovering these incompatibilities and complementarities, our study demonstrates the value of accounting for different social capital configurations and the interplay of their inherent social capital resources when examining the effects of brokerage on corporate entrepreneurship. 相似文献
10.
《Journal of Statistical Computation and Simulation》2012,82(3):165-180
In this article, the validity of procedures for testing the significance of the slope in quantitative linear models with one explanatory variable and first-order autoregressive [AR(1)] errors is analyzed in a Monte Carlo study conducted in the time domain. Two cases are considered for the regressor: fixed and trended versus random and AR(1). In addition to the classical t -test using the Ordinary Least Squares (OLS) estimator of the slope and its standard error, we consider seven t -tests with n-2\,\hbox{df} built on the Generalized Least Squares (GLS) estimator or an estimated GLS estimator, three variants of the classical t -test with different variances of the OLS estimator, two asymptotic tests built on the Maximum Likelihood (ML) estimator, the F -test for fixed effects based on the Restricted Maximum Likelihood (REML) estimator in the mixed-model approach, two t -tests with n - 2 df based on first differences (FD) and first-difference ratios (FDR), and four modified t -tests using various corrections of the number of degrees of freedom. The FDR t -test, the REML F -test and the modified t -test using Dutilleul's effective sample size are the most valid among the testing procedures that do not assume the complete knowledge of the covariance matrix of the errors. However, modified t -tests are not applicable and the FDR t -test suffers from a lack of power when the regressor is fixed and trended ( i.e. , FDR is the same as FD in this case when observations are equally spaced), whereas the REML algorithm fails to converge at small sample sizes. The classical t -test is valid when the regressor is fixed and trended and autocorrelation among errors is predominantly negative, and when the regressor is random and AR(1), like the errors, and autocorrelation is moderately negative or positive. We discuss the results graphically, in terms of the circularity condition defined in repeated measures ANOVA and of the effective sample size used in correlation analysis with autocorrelated sample data. An example with environmental data is presented. 相似文献