谈体育教学改革发展趋势

体育教学“以人为本”观念形成的社会环境是现代化发展的必然结果。我们教育改革思路提出“健康第一”的指导思想，同样验证了“以人为本”的现代体育观念的社会环境背景。学生对体育课的要求和看法将对体育教学改革提供“主体”依据，体育教学改革要“以人为本”。     

Temporal dynamics and drivers of lake ecosystem metabolism using high resolution observations in a shallow,tropical, eutrophic lake (Laguna Lake,Philippines)

The physical, chemical, and biological dynamics under changing atmospheric conditions of Laguna Lake, Philippines were analyzed from intensive observations. Diel measurements were conducted for 48 continuous hours for both dry and wet tropical seasons in addition to fine resolution long-term monitoring. Results revealed significant vertical and diel variations of lake variables in spite of a shallow water depth (2.5 m) caused by the intense surface heating from solar irradiance (~800 W m^?2) and accentuated by the lake's high turbidity (16–32 ftu). Late afternoon land-lake breeze (~5–7 m s^?1) regularly breaks daytime thermal stratification, and convective cooling at night maintains isothermal condition until dawn of the next day. The stratified condition demonstrated a wind-driven, density-induced 2-layer current pattern with a windward moving epilimnion (~4 folds faster) and a compensating hypolimnetic flow in the general lake circulation direction. Laguna Lake was observed to have a dominating diel cycle but also undergoes significant seasonal limnological variations brought primarily by climate, hydrology, and its interaction with the adjacent sea. Significantly correlated variations of pH, chlorophyll-a and DO in the dry season were indicative of the higher biological activity associated with the intrusion of polluted waters from Metro Manila. The non-occurrence of thermal over-turn was observed to be regularly followed by bottom hypoxic conditions (2–4 mg L^?1), indicative of the eutrophic condition of the lake and the importance of diel wind-induced mixing in the bottom supply of DO. Laguna Lake was found to be predominantly net heterotrophic (GPP:R < 1, NEP < 0).     

气候变化对经济金融系统性冲击的物理风险研究

中国作为全球最大的发展中国家,其综合实力伴随着经济、科技的快速发展而不断增强。但我国的极端气候事件趋多趋强,气候风险水平呈上升趋势,影响我国经济社会的发展。金融作为经济运行的核心,在宏观经济中有着举足轻重的作用。为了研究气候变化与经济金融稳定之间的关系,本文对极端气候事件损失体系和区域经济金融稳定性综合体系进行指数合成并构建面板模型探讨气候变化中气温和降水量因素的变动和极端气候事件对区域金融稳定的影响,得出气候变化的物理风险通过极端气候事件对经济发展和金融稳定有负面影响,并根据实证结果提出完善绿色金融市场和优化信息披露制度的政策建议。     

谈学校体育中体育文化的教育功能

在学校体育中对学生进行体育文化教育的关键是对学生进行体育精神的培养与教育。同时提出了体育精神包含着现代人自强不息的拼搏精神 ,发展自我的超越精神 ,费厄泼赖的竞争精神及真善美的追求精神等四方面的内容。     

我国物流组织与物流体系的创新与发展

现代物流作为“降低成末的最后边界”，从组织看，是由流体、载体和流向三要素构成，从运作看，体现储存、运输和配送三大功能；从投入产出看，寻求降低物流成本和提高服务水平的动态均衡。供应式物流到订购式物流是我国物流组织创新的内容，其发展战略是即时物流、协同或一体化物流、高度化物流。物流体系创新应从行政区域、组织到按经济区域组织来实现。     

The interactions between natural and physical capitals in the tourist lifecycle model

This paper presents a model of the interactions between natural resources and physical capital in the evolution of a tourist destination. The projected trajectory of the number of tourists approaches the classical lifecycle pattern. The post-stagnation phase is analyzed within the model, obtaining different patterns which depend on the impacts of physical capital on both demand and environmental degradation. The magnitudes of these impacts are determined by the type of tourism. An empirical application to the case of the tourist industry in the Canary Islands (Spain) is presented, showing that the model can represent the general characteristics of the post-stagnation phase of a tourist destination.     

刍议团队管理三要素

本文论述的“团队管理”,不是仅着眼于“团队管理”的某一方面,而是从整体上把握“团队管理”的内涵,把“团队管理”真正看成一个有机的系统。本文先论述团队组织产生的具体背景原因,并把“形成团队的三要素”归纳为：物质的激励机制、向心力、挑战性的目标,再以此分析为基础,对“团队精神”、“行政组织”、“国有企业改革”等理论问题进行初步的探讨、归纳,力求准确而全面地揭贡“团队管理”的本质,为解决实践中出现的问题提供了一个新思路。     

A new approach to measuring riskiness in the equity market: Implications for the risk premium

We introduce a new approach to measuring riskiness in the equity market. We propose option implied and physical measures of riskiness and investigate their performance in predicting future market returns. The predictive regressions indicate a positive and significant relation between time-varying riskiness and expected market returns. The significantly positive link between aggregate riskiness and market risk premium remains intact after controlling for the S&P 500 index option implied volatility (VIX), aggregate idiosyncratic volatility, and a large set of macroeconomic variables. We also provide alternative explanations for the positive relation by showing that aggregate riskiness is higher during economic downturns characterized by high aggregate risk aversion and high expected returns.     

以批发市场为中心的蔬菜物流发展模式分析

近些年来,农村人口不断前往城市,加之受到气候等自然因素的影响,城市的蔬菜经常出现价格不同程度的变化、蔬菜难买、蔬菜很贵的情况。本文从蔬菜物流发展模式的角度进行分析,从而为市民能够买到便宜又好吃的蔬菜做出贡献。     

普通高校公共体育开设女生瑜伽课程的研究

对普通高校女生在瑜伽训练前后的生理指标和心理状态情况进行对比分析,结果显示：大部分女生表现出对瑜伽的喜爱;瑜伽训练能明显改善大学女生身体形态,提高大学女生的心肺功能、身体柔韧性和控制能力,对其心理状态的影响有积极的促进作用。实验证明在高校公共体育开设女生瑜伽课程具有可行性和实效性。