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1.
中央企业作为中国特色社会主义经济制度的坚强基石,是国民经济的重要支柱.提升中央企业国有资本的投资效率,对于夯实国有经济基础、建设中国特色社会主义具有重要意义.运用实证研究方法考察中央企业控股上市公司经济增加业绩考核与非效率投资的关系,研究发现:首先,中央企业控股上市公司经济增加值与非效率投资存在显著的负相关关系;其次,尽管EVA可以显著抑制非效率投资,但从整体上看,EVA与非效率投资之间存在倒"U型"关系,EVA的积极效应存在适用空间,合理的EVA能够最大化降低非效率投资.由此可见,引导中央企业实行经济增加值业绩考核,保证企业理性投资,对于当前的国企改革具有深刻的政策含义. 相似文献
2.
The analysis of time series data with detection limits is challenging due to the high‐dimensional integral involved in the likelihood. Existing methods are either computationally demanding or rely on restrictive parametric distributional assumptions. We propose a semiparametric approach, where the temporal dependence is captured by parametric copula, while the marginal distribution is estimated non‐parametrically. Utilizing the properties of copulas, we develop a new copula‐based sequential sampling algorithm, which provides a convenient way to calculate the censored likelihood. Even without full parametric distributional assumptions, the proposed method still allows us to efficiently compute the conditional quantiles of the censored response at a future time point, and thus construct both point and interval predictions. We establish the asymptotic properties of the proposed pseudo maximum likelihood estimator, and demonstrate through simulation and the analysis of a water quality data that the proposed method is more flexible and leads to more accurate predictions than Gaussian‐based methods for non‐normal data. The Canadian Journal of Statistics 47: 438–454; 2019 © 2019 Statistical Society of Canada 相似文献
3.
面对广阔的家政市场需求,上海应当积极抓住机遇,通过扶持若干龙头企业,优化家政服务市场环境;充分发挥行业协会的协调引领作用,做好行业标准建设与自律;培育一支理念先进、眼光深远的高素质职业经理人队伍,深入推动家政服务品牌化发展;提量增质,不断引入更多从业人员,提升整体从业人员素质,建立以服务质量为核心的规则秩序.同时,还要重视家政服务业的法律法规建设,充分保障各方的合法权益,促进上海家政服务业健康发展. 相似文献
4.
历史照亮过去,历史启迪未来。以党史、新中国史、改革开放史、社会主义发展史为核心内容的“四史”教育,是以历史为基础的思想政治教育。从党史、新中国史、改革开放史、社会主义发展史中挖掘思想政治理论课教育资源,对高校传承红色基因、落实立德树人根本任务具有重要的指导意义。以庆祝中国共产党成立100周年为契机,将“四史”教育融入高校思想政治理论课教学,必须遵循相应的逻辑理路:树立正确党史观、坚定理想信念的价值追求是融入的逻辑立场;强化大历史观、理解党的伟大贡献是融入的逻辑方法;坚持内在统一性、把握“四史”教育的整体性逻辑是融入的基本前提;抓住侧重点、精准对接各门大学生思想政治理论课程是融入的逻辑核心;坚持实践逻辑、引导大学生从“四史”中汲取智慧和力量是融入的根本遵循。 相似文献
5.
Guanglei Yu Yang Li Liang Zhu Hui Zhao Jianguo Sun Leslie L. Robison 《Scandinavian Journal of Statistics》2019,46(2):414-431
This paper discusses regression analysis of panel count data with dependent observation and dropout processes. For the problem, a general mean model is presented that can allow both additive and multiplicative effects of covariates on the underlying point process. In addition, the proportional rates model and the accelerated failure time model are employed to describe possible covariate effects on the observation process and the dropout or follow‐up process, respectively. For estimation of regression parameters, some estimating equation‐based procedures are developed and the asymptotic properties of the proposed estimators are established. In addition, a resampling approach is proposed for estimating a covariance matrix of the proposed estimator and a model checking procedure is also provided. Results from an extensive simulation study indicate that the proposed methodology works well for practical situations, and it is applied to a motivating set of real data. 相似文献
6.
7.
方帅 《江西农业大学学报(社会科学版)》2021,20(1):131-137
在开展精准扶贫过程中各地既有共性优势,也有特色优势.相对"问题视角"而言,"优势视角"对精准扶贫工作具有较强的实践性.运用优势治理的分析视角,通过对Z县L镇的实地调研发现:L镇以党建为抓手,结合地处城郊的区位优势,充分利用当地富余的劳动力资源,建立劳务服务中心;通过有效的制度设计,探索基层党建引领劳务产业扶贫的发展模式,取得良好成效.实践表明,在当前精准脱贫决胜攻坚阶段,各地应充分挖掘地方特有的资源优势,将其与组织优势、政策优势相结合,打造基层党建引领精准扶贫的本土化品牌. 相似文献
8.
贫困是一个多维概念,物质脱贫之后,还有精神脱贫问题.所谓精神脱贫,是指个体或者群体的精神水平和观念素质不落后于社会物质生产方式和社会整体精神与观念素质平均水平的生存状态.精神脱贫的内涵具有动态变化性,新发展阶段精神脱贫主要由互相关联的四方面构成:主体意识是基础,积极进取的人生态度、主动参与精神是核心,科学的思维方式是表现.四方面密不可分,相辅相成,共同构成新发展阶段精神脱贫的丰富内涵.新发展阶段推进精神脱贫:一是要精准识别,摸清精神扶贫对象,这是必要前提;二是加强教育,培养主体意识,这是重要基础;三是积极开展文化活动,以文化人,这是关键措施;四是巧用典型,提振精气神,这是有益补充. 相似文献
9.
Robin S. Cronin Minglan Li Kate Culliney Robyn Maude Katherine Nelson 《Women and birth : journal of the Australian College of Midwives》2018,31(5):422-429
Background
Second-degree tears are the most common form of perineal trauma occurring after vaginal birth managed by New Zealand midwives, although little is known about midwives’ perineal practice.Aim
The aim of this study was to identify how midwives managed the last second-degree perineal tear they treated and the level to which their practice reflects National Institute for Health and Care Excellence guidelines.Methods
An (anonymous) online survey was conducted over a six-week period in 2013. New Zealand midwives who self-identified as currently practising perineal management and could recall management of the last second-degree tear they treated were included in the analysis.Findings
Of those invited, 645 (57.1% self-employed, 42.9% employed) were eligible and completed surveys. Self-employed midwives reported greater confidence (88.0% vs 74.4%, p < 0.001) and more recent experience (85.1% vs 57.4%, p < 0.001) with perineal repair than employed midwives. Midwives who left the last second-degree tear unsutured (7.3%) were more likely to report low confidence (48.9% vs 15.4%, p < 0.001) and less recent experience with repair (53.2% vs 24.7%, p < 0.001), and were less likely to report a digital-rectal examination (10.6% vs 49.0%, p < 0.001), compared to midwives who sutured. Care consistent with evidence-based guidelines (performing a digital-rectal examination, 59.4% vs 49.3% p = 0.005; optimal suturing techniques, 62.2% vs 48.7%, p = 0.001) was associated with recent perineal education.Conclusions
Midwives’ management of the last second-degree perineal tear is variable and influenced by factors including: employment status, experience, confidence, and perineal education. There is potential for improvement in midwives’ management through increased uptake of evidence-based guidelines and through ongoing education. 相似文献10.
Li Bozhong 《Social Sciences in China》2018,39(1):120-131
Water is the source of all life, and is closely related to human civilization. It had a special significance in China, so the ancient Chinese created the dragon god as a symbol of China, the Chinese and Chinese civilization. It can be said that the unique hydrological conditions on the territory of China created three great historical miracles: China, the Chinese people, and Chinese civilization. The Chinese have dedicated more effort than people in any other countries to water control and water use in order to make effective use of water resources and prevent flooding. It is their unparalleled achievements that have laid the foundation for these three miracles. Today, the Chinese people are facing unprecedented challenges in water control and water use. Exploring the historical Chinese relationship with water offers a good opportunity to understand the important role that water plays in long-term social development. 相似文献