对高校体育教育中“健康第一”思想的探讨

本文通过对“健康第一”思想的阐述,探讨了在我国高校体育教育中树立“健康第一”思想的重要性和必要性以及目前我国高校体育教育中树立“健康第一”思想和实施健康教育的现状,。“健康第一”作为学校体育工作指导思想的确立,表明应试教育向素质教育转轨是不可抗拒的,是未来教育发展的方向。在高校体育教育中实施“健康教育”正是顺应这一社会历史要求提出的。     

情感的颤动——罗伯特·弗罗斯特抒情诗歌情感窥视

诗歌是诗人情感表现与外泻的最佳方式,情感的颤动也随着诗人生活经历的不同而有不同的诗歌表现方式.作为美国诗坛上一个著名的"田园诗人",罗伯特·弗罗斯特以不同的抒情诗歌方式来表现了自己的情感颤动.本文就弗罗斯特的几首较为典型的抒情诗歌来浅析了弗罗斯特情感的颤动与外泻.     

Toward a resilient complex adaptive system view of business models

This paper employs the theory of resilient complex adaptive systems (RCAS) to offer a versatile and universal foundation for the concept of a business model that facilitates connections between prior works while enabling future exploration with a common language. The proposed business model construct is developed by first exploring the field of systems to highlight how the concept of an RCAS can be employed to provide a more robust conceptualization of a business model than previous constructs. A thematic analysis of the literature is then conducted to translate the fundamental requirements of an RCAS into the business model context. This system view is inherently abstraction tolerant and provides a foundation for both academic research and practical applications. Specifically, it addresses two key gaps in the business model literature. First, the comprehensive nature of the system model naturally calls out important aspects of business models that have been largely ignored in the literature. Second, the construct provides a comprehensive means to connect the work of business model scholars and practitioners outlined in more than 150 studied articles, highlighting how each earlier research effort has employed a construct that is actually part of a grander whole.     

考虑动态损失厌恶的V2G市场交易激励机制设计

为推进V2G服务设想的实现,本文将电动汽车用户的动态损失厌恶特性考虑在内,分析了一般“保底收购,随行就市”市场制度下,电动汽车用户与电网公司间关于V2G服务交易的博弈行为,并提出了相应的激励机制。研究发现:在一般“保底收购,随行就市”市场制度下,电动汽车用户关于V2G服务的行为选择无法满足电网公司关于V2G服务电量的期望;电动汽车用户对V2G服务电量的决策受其对未来交易价格预期的影响,且存在违约风险。鉴于此,文章引入“激励保证金+违约金”的激励机制,并给出了对应的保底价格策略、激励保证金与违约金等策略,以使电动汽车用户的V2G服务选择与电网公司的期望相统一。算例分析结果验证了本文提出的模型与理论分析的可行性。     

RP/SCX双模式混合机理固定相评价研究

液相色谱多模式混合固定相同时具有多种分离机理,被越来越多的应用于复杂样品的分析。通过改变两种改性基团的投料比,制备了一组经典的RP/SCX双模式混合固定相,并对其进行了系统的评价研究。采用元素分析、离子交换当量测试,得到了-C18与-SO3H两种基团的比例,验证了空间位阻对-C18键合率的影响;分别在反相和离子交换模式下,考察了疏水性样品、离子样品的保留行为;并成功分离了含有6种不同类型化合物的混合物。评价结果表明,制备的固定相同时具有反相和离子交换色谱的双重保留机理,为此类固定相分离复杂样品提供了参考数据。     

公共文化服务设施的最优投资管理模式选择

在建构基于“适合度”的公共文化服务设施投资管理模式选择方法的基础上,以北京、西安、深圳以及杭州的372个公共文化服务设施6 532个数据为样本,针对文化影响的弥散性,采用Tr-OEM算法检测样本数据中的概念漂移现象,结合专家咨询,探讨了4个城市372个公共文化服务设施的最优投资管理模式。研究结果表明:(1)理论分析显示,文化对居民的影响效应是不均匀的,调研所得的样本数据中存在明显的概念漂移,Tr-OEM算法可有效检测数据的概念漂移并在后台有效模拟与修改数据。(2)实证分析显示,“政府—文化单位”模式是4个城市公共文化服务设施主要的投资管理模式,其次为“一臂之距”模式,最后为市场分散型模式。其中,北京、杭州适宜采用市场分散型模式的文化设施数量比较多,而西安、深圳适宜“一臂之距”模式的比较多。     

藏族格言诗中文化负载词翻译研究

格言诗在藏族文化史中占有重要地位,是反映藏族文化的重要组成部分。随着中国改革开放的日益深化,对外交流也越来越频繁,藏族格言诗也出现了多种译本传于世界各地。藏族格言诗往往包含大量的文化负载词,在翻译中对于这些文化负载词的处理成为译者面临的主要困难之一。奈达把文化负载词分为五类,李正栓和达文波特对藏族格言诗中文化负载词的翻译平分秋色,各具意义,各有原因,译者主体性和读者接受是不同翻译策略选择的先决条件,从而决定了译作的整体风貌。     

中国户籍制度及改革现状

户籍制度改革的“正当性”已取得广泛认同,但改革本身在长期的实践过程中仍面临重重困境。对户籍制度的起源和功能、作用与影响、改革阶段、近期改革实践与困境,以及户籍制度及其改革的实践与研究进行了回溯和整理,以期更好地理解时下户籍制度改革方案的可行性,并认清真正贯彻实施户改政策所需要解决的问题,从而推动户籍制度改革实践。     

Generalized M-estimation for the accelerated failure time model

The accelerated failure time (AFT) model is an important regression tool to study the association between failure time and covariates. In this paper, we propose a robust weighted generalized M (GM) estimation for the AFT model with right-censored data by appropriately using the Kaplan–Meier weights in the GM–type objective function to estimate the regression coefficients and scale parameter simultaneously. This estimation method is computationally simple and can be implemented with existing software. Asymptotic properties including the root-n consistency and asymptotic normality are established for the resulting estimator under suitable conditions. We further show that the method can be readily extended to handle a class of nonlinear AFT models. Simulation results demonstrate satisfactory finite sample performance of the proposed estimator. The practical utility of the method is illustrated by a real data example.     

Confidence Intervals from Stochastic Approximation

We propose a nonparametric method of constructing confidence interval for a scalar parameter from stochastic approximation through the efficient Robbins–Monro procedure proposed by Joseph (2004 Joseph, V.R. (2004). Efficient Robbins–Monro procedure for binary data. Biometrika 91:461–470.[Crossref], [Web of Science ®] , [Google Scholar]). Unlike the bootstrap method where the number of resampling is fixed in advance, the proposed procedure iteratively searches the endpoints in an optimal way such that the convergence is fast and the coverage is obtained accurately. Simulation and real data application illustrate its superiority over the usual Robbins–Monro procedure and common bootstrap methods.