新育种技术视角下实质性派生品种制度的再思考

转基因等新育种技术兴起是创设实质性派生品种（EDV）制度的主要原因。EDV制度具有减少修饰性育种、鼓励育种原始创新等价值,我国在新修改的《种子法》中引入了该制度。然而,新育种技术特别是基因编辑技术的快速发展,使该制度在实践中面临EDV判断标准难以确定、新育种技术改良成果转化受阻和育种者间利益失衡等困境。应立足于激励原始创新、促进新技术运用和实现利益平衡之三重目的,从设定差异化的认定标准、引入责任规则与再平衡育种者利益等方面调整EDV制度,使该制度同育种技术的发展相调适。我国已开始基因编辑品种商业化,需综合种业市场现状和育种技术发展趋势,制定符合国情的EDV制度实施办法,以推动该制度有效实施,发挥其应有功能。     

论中国共产党党内考核评估机制的建立和健全

建立健全党内考核评估机制对于保持党的先进性有着重大的意义。建立健全中国共产党党内考核评估机制问题,可以从建立健全党内考核评估机制的重要性和必要性,国内外有关考核评估的经验借鉴、我党党内考核评估的现状、建立健全党内考核评估机制的目标要求与基本思想,建构党内考核评估机制的策略、建立健全党内考核评估机制的保障措施、建立健全党内考核评估机制的实践探索等7个方面进行研究和论述。     

Shared and unique characteristics of school,cyber and family victimization among school-aged children in Hong Kong

Victimizations from online and offline violence, such as sibling violence, school violence and witness of family violence, both have negative associations with victims' mental health and may share similar individual and family characteristics. This study aims to explore the common and differentiated characteristics in the prediction of school, cyber and family victimization and whether there are unique associations within these victimization types. We employed a two-stage stratified sampling method to collect a representative sample of 5567 children aged 3–17 from a cross-sectional, school-based survey in Hong Kong. Results showed that all types of child victimization, including sibling, school and cyberbullying, as well as the witness of violence at home, were positively correlated with each other. Children's age was positively related to the occurrence and cooccurrence of all types of child victimization. Frequent family residential mobility and parents' higher education level were positively related to all types of children's victimization. The scores of all aspects of children's paediatric quality of life were found negatively related to children's school victimization. This study provides insight into the unique and shared elements of children's online and offline victimization. Knowledge of the distinguished familial gradients of child victimization at home and beyond could benefit the development of child victimization prevention.     

浅析集团公司财务管理重点问题

对于集团公司财务管理,为了实现集团总价值最大化的目标,重点在于解决三个问题:一是经营战略上专业化与多元化的协调;二是财务控制中的集权与分权的权衡;三是决策的程序化与灵活性。     

TWO‐ AND THREE‐STAGE FLOWSHOP SCHEDULING WITH NO‐WAIT IN PROCESS

In this paper we study the time complexities of some two‐ and three‐stage no‐wait flowshop makespan scheduling problems where, in some stage, all the jobs require a constant processing time and the stage may consist of parallel identical machines. Polynomial time algorithms are presented for certain problems, while several others are proved to be strongly NP‐complete.     

浅谈中国特色的工业化道路

探讨了我国走新型工业化道路必须依靠科技进步,提高劳动者素质,不断改善经济增长质量的独特内在要求.在此基础上,提出经济发展以信息化带动工业化,以工业化促进信息化,推进产业结构的优化升级,正确处理高新技术产业与传统产业之间的关系,控制人口增长,保护环境,合理开发和利用资源,实现可持续发展.     

Efficient Estimation of an Additive Quantile Regression Model

Abstract. In this paper, two non‐parametric estimators are proposed for estimating the components of an additive quantile regression model. The first estimator is a computationally convenient approach which can be viewed as a more viable alternative to existing kernel‐based approaches. The second estimator involves sequential fitting by univariate local polynomial quantile regressions for each additive component with the other additive components replaced by the corresponding estimates from the first estimator. The purpose of the extra local averaging is to reduce the variance of the first estimator. We show that the second estimator achieves oracle efficiency in the sense that each estimated additive component has the same variance as in the case when all other additive components were known. Asymptotic properties are derived for both estimators under dependent processes that are strictly stationary and absolutely regular. We also provide a demonstrative empirical application of additive quantile models to ambulance travel times.     

新乡土小说的叙事模式及其文化蕴涵

新乡土小说之所以为"新乡土"小说,其关键既在其所书写的对象,更在其书写的方式.新乡土小说虽然仍具"城乡"二元对立的叙事思维内核,其基本叙事模式也承续了已往传统,但在这些传统模式中蕴含许多审美新质.     

西部经济快速增长态势下环境趋向优化问题研究

随着西部大开发战略的推进,西部国民经济取得了前所未有的快速增长,且呈现持续高速增长的良好态势。然而,这种经济增长表现为投资拉动实现的外延式粗放型增长,在一定程度上对环境质量造成不容忽视的负面影响。本文客观分析了西部经济快速增长态势及其对区域环境质量的负面影响,在此基础上提出了推进西部经济发展与环境优化双重"增长"的对策思路。