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41.
分析了振兴东北老工业基地面临的形势和困难。提出了为振兴东北老工业基地应从充分挖掘利用东北地区自身的教育资源,加强重点学科人才的培养,树立科学的人才评价观方面提供人才保证。强调指出人力资源管理,在做好应对来自国外挑战准备的同时,还应在管理模式和管理理念上做好与国际接轨的准备,为东北经济走向国际奠定基础。 相似文献
42.
Generalized additive models for location, scale and shape 总被引:10,自引:0,他引:10
R. A. Rigby D. M. Stasinopoulos 《Journal of the Royal Statistical Society. Series C, Applied statistics》2005,54(3):507-554
Summary. A general class of statistical models for a univariate response variable is presented which we call the generalized additive model for location, scale and shape (GAMLSS). The model assumes independent observations of the response variable y given the parameters, the explanatory variables and the values of the random effects. The distribution for the response variable in the GAMLSS can be selected from a very general family of distributions including highly skew or kurtotic continuous and discrete distributions. The systematic part of the model is expanded to allow modelling not only of the mean (or location) but also of the other parameters of the distribution of y , as parametric and/or additive nonparametric (smooth) functions of explanatory variables and/or random-effects terms. Maximum (penalized) likelihood estimation is used to fit the (non)parametric models. A Newton–Raphson or Fisher scoring algorithm is used to maximize the (penalized) likelihood. The additive terms in the model are fitted by using a backfitting algorithm. Censored data are easily incorporated into the framework. Five data sets from different fields of application are analysed to emphasize the generality of the GAMLSS class of models. 相似文献
43.
Point processes are the stochastic models most suitable for describing physical phenomena that appear at irregularly spaced
times, such as the earthquakes. These processes are uniquely characterized by their conditional intensity, that is, by the
probability that an event will occur in the infinitesimal interval (t, t+Δt), given the history of the process up tot. The seismic phenomenon displays different behaviours on different time and size scales; in particular, the occurrence of
destructive shocks over some centuries in a seismogenic region may be explained by the elastic rebound theory. This theory
has inspired the so-called stress release models: their conditional intensity translates the idea that an earthquake produces
a sudden decrease in the amount of strain accumulated gradually over time along a fault, and the subsequent event occurs when
the stress exceeds the strength of the medium. This study has a double objective: the formulation of these models in the Bayesian
framework, and the assignment to each event of a mark, that is its magnitude, modelled through a distribution that depends
at timet on the stress level accumulated up to that instant. The resulting parameter space is constrained and dependent on the data,
complicating Bayesian computation and analysis. We have resorted to Monte Carlo methods to solve these problems. 相似文献
44.
李晋宏 《太原师范学院学报(社会科学版)》2003,2(2):123-124
“常家”兴衰与人力资源的演变有着密切关系 ,常家在优化人力资源方面的一些主要措施 ,揭示出人力资源与经济发展是密不可分的。面对现代经济发展中遇到的种种挑战 ,更让我们认识到重视人力资源优化的重要性。以史为鉴 ,给现代人以很多启示。 相似文献
45.
Stuart Barber Guy P. Nason 《Journal of the Royal Statistical Society. Series B, Statistical methodology》2004,66(4):927-939
Summary. Wavelet shrinkage is an effective nonparametric regression technique, especially when the underlying curve has irregular features such as spikes or discontinuities. The basic idea is simple: take the discrete wavelet transform of data consisting of a signal corrupted by noise; shrink or remove the wavelet coefficients to remove the noise; then invert the discrete wavelet transform to form an estimate of the true underlying curve. Various researchers have proposed increasingly sophisticated methods of doing this by using real-valued wavelets. Complex-valued wavelets exist but are rarely used. We propose two new complex-valued wavelet shrinkage techniques: one based on multiwavelet style shrinkage and the other using Bayesian methods. Extensive simulations show that our methods almost always give significantly more accurate estimates than methods based on real-valued wavelets. Further, our multiwavelet style shrinkage method is both simpler and dramatically faster than its competitors. To understand the excellent performance of this method we present a new risk bound on its hard thresholded coefficients. 相似文献
46.
蓝力民 《广州大学学报(社会科学版)》2003,2(7):40-44
十三行是我国历史上著名的外贸中心,其遗址是当代广州的重要名胜古迹,但目前尚未进行旅游开发利用。该景区旅游资源特色鲜明、品位度高、价值珍贵、种类丰富,若整合良好,则具有极大的旅游吸引力。 相似文献
47.
进入知识经济时代,人力资源成为企业的第一竞争要素。国有企业应该通过建立现代企业制度、科学客观的考核评价机制和有效的组合激励机制,制定和推进职业生涯计划、科学的选人用人制度,塑造良好的企业文化氛围等六个方面改革现有的人力资源管理模式。 相似文献
48.
国有企业的特殊性与我国国有企业的布局定位 总被引:1,自引:0,他引:1
国有企业特殊性的真实内涵表现为,它有着特殊的所有者和所有者代表、特殊的社会目标、特殊的社会经济功能和特殊的产权组织运作机制。因此,越是在以社会目标为主的产业领域,国有企业就越有存在的价值。尽管国有企业的布局是一种趋向性和开放式的动态布局,但它所传递的信息表明国有企业会在特殊产业领域中以合适的方式继续存在并扮演重要角色。 相似文献
49.
Testing symmetry under a skew Laplace model 总被引:3,自引:0,他引:3
Tomasz J. Kozubowski Anna K. Panorska 《Journal of statistical planning and inference》2004,120(1-2):41-63
We develop tests of hypothesis about symmetry based on samples from possibly asymmetric Laplace distributions and present exact and limiting distribution of the test statistics. We postulate that the test statistic derived under the Laplace model is a rational choice as a measure of skewness and can be used in testing symmetry for other, quite general classes of skew distributions. Our results are applied to foreign exchange rates for 15 currencies. 相似文献
50.
论人力资源会计的双重属性 总被引:1,自引:0,他引:1
人力资源会计是近年来学术界讨论较多的课题之一 ,然而其中众多文章对人力资源会计属性的界定还值得商榷。通过对人力资源会计的内涵、应用现状分析 ,探讨了其双重属性及适用前景等问题。 相似文献