环境信息披露、技术创新投入与企业高质量发展基于制造业上市公司的经验证据

在我国经济发展进入新常态的背景下，如何推进经济高质量发展成为经济社会发展的主要任务,“创新、协调、绿色、开放、共享”五大发展理念，是实现高质量发展的必由之路。本文从全要素生产率的视角出发，系统地剖析了环境信息披露、技术创新投入对制造业企业发展质量的影响及作用机理，实证结果表明：环境信息披露促进企业高质量发展；技术创新投入具有滞后性，在短期内不会带来企业发展质量的提升；但技术创新投入对环境信息披露与企业发展质量的关系具有正向调节作用；基于产权异质性的结果显示，这种正向调节作用在非国有企业中更显著。     

上杭冶炼厂铁路专用线工程生态环境影响分析

本文对上杭冶炼厂铁路专用线工程项目实施引起的生态环境变化作为评价工作的重点。笔者认为本项目的建设会对当地的生态环境带来一定的影响,包括土地利用格局的改变、植被破坏、对河流的影响以及水土流失和景观格局的改变等,并提出建设挡土坡、截水沟、场地绿化等生态保护措施,     

高速公路中央分隔带组合式护栏方案研究

针对国内某高速中央分隔带护栏升级改造问题,提出了中央隔离带组合式护栏方案,建立了组合式护栏的三维汽车—护栏碰撞仿真模型,并针对不同的护栏立柱间距进行了汽车碰撞仿真模拟研究。结果表明,利用中央隔离带旧护栏改造为组合式护栏满足规范要求,可以有效地降低成本,为高速公路中央分隔带护栏改造提供依据。     

吉林省西部地区野生杀虫植物资源调查

报道了吉林省西部地区野生杀虫植物共计118种,分属43科.对杀虫植物资源进行评价,可为该资源开发利用提供科学依据.     

高新区创新能力评价指标体系构建——基于武汉东湖高新区的分析

高新区的发展对于区域经济的带动作用是巨大的,而高新区创新能力的培育对于高新区的持续发展有较大的影响。通过对当前区域创新能力评价指标及高新区创新能力评价指标的分析,基于高新区的构成要素特点,构建了高新区创新能力评价指标体系,结合武汉东湖高新区的发展状况,对其创新能力进行了评价,并提出了相关对策与建议。     

新疆锡伯族7～18岁学生生长发育研究

文章通过了解新疆锡伯族7～18岁学生的身体发育状况。对新疆伊犁州察布查尔锡伯族自治县2200名学生进行体质测试,分别计算身体形态指标身高、体重和胸围以及生长发育指数伯格林指数、维尔维克指数、克托莱指数、身高体质量指数和BMI指数作为学生的评价指标,并作城乡比较。结果表明身体形态各指标随着年龄的增长而增长,胸廓的发育速度少年时期小于身高的生长速度,而青春期尤其是青春期后期胸廓的发育速度大于身高的发育速度;体重的增加速度同胸廓呈现相同的结果。男生在各方面均高于女生,且呈现出青春期特点;城市学生优于乡村学生。     

The leading correlation of the winter Aleutian Low with surface air temperature during the subsequent summer over the Arctic and its possible mechanism

The variations of surface air temperature(SAT)over the Arctic are closely related to global climate change.Based on reanalysis datasets and a newly defined Aleutian Low intensity index,we found a good correlation between intensity of winter Aleutian Low and the SAT over the Arctic during the subsequent summer.Explanations were given using correlation analysis,composite analysis,and singular value decomposition methods.When intensity of winter Aleutian Low was weaker,sea surface temperature appeared higher in the North Pacific in the subsequent spring and summer,resulting in mean meridional circulation anomalies and 500 hPa geopotential height anomalies in spring and summer.Anomalous upward motion in mid-latitudes and downward motion in high latitudes(Ferrel cell weakening)transported the warmer air to the north from lower layer to the upper layer followed by increases in the SAT over the Arctic.Anomalous downward motion over about 75°N also caused consequent adiabatic warming and contributed to inhibit the heat transportation from surface to upper layer.Negative 500 hPa geopotential height anomalies existed in mid-latitudes and positive anomalies existed in high latitudes.The pattern(low-in-south and high-in-north)benefited from increasing the inflow volume flux of the Bering Strait,which also made the SAT over the Arctic increase.The results of this study reveal the process that the summer SAT over the Arctic was modulated by interannual variability of intensity of winter Aleutian Low.     

Microstructure and oxidation resistance of SiC–MoSi2 multi-phase coating for SiC coated C/C composites

In order to improve the anti-oxidation of C/C composites, a SiC–MoSi2multi-phase coating for SiC coated carbon/carbon composites(C/C)was prepared by low pressure chemical vapor deposition(LPCVD) using methyltrichlorosilane(MTS) as precursor, combined with slurry painting from MoSi2 powder. The phase composition and morphology were analyzed by scanning electron microscope(SEM) and X-ray diffraction(XRD) methods, and the deposition mechanism was discussed. The isothermal oxidation and thermal shock resistance were investigated in a furnace containing air environment at 1500 1C. The results show that the as-prepared SiC–MoSi2coating consists of MoSi2 particles as a dispersing phase and CVD–SiC as a continuous phase. The weight loss of the coated samples is 1.51% after oxidation at 1500 1C for 90 h, and 4.79% after 30 thermal cycles between 1500 1C and room temperature. The penetrable cracks and cavities in the coating served as the diffusion channel of oxygen, resulted in the oxidation of C/C composites, and led to the weight loss in oxidation.     

新型城镇化发展研究——以“百里汾河新型经济带”为例

"百里汾河新型经济带"是临汾市经济社会发展的重要引领区.2012年,经济带的城镇化水平均超过了34%,进入了城镇化快速发展的阶段.然而,长期以来经济带城镇化呈现典型的粗放外延发展特征,存在城镇化水平总体滞后、城镇化严重滞后于工业化、以霍州为代表的资源枯竭型城市发展乏力、土地资源供给趋紧等一系列问题,因此,经济带应积极推进城镇化战略转型,走新型城镇化道路,坚持城镇化和工业化的良性互动,城镇化与新农村建设协调推进,生态文明与城镇化建设有机融合.     

2012年齐齐哈尔地区雪地足球运动开展现状的研究

通过调查2012年在齐齐哈尔地区举办的三次雪地足球比赛,研究雪地足球在齐齐哈尔地区开展的现状.采用调查法和文献资料法,总结影响雪地足球运动开展的主要因素,提出创造良好的雪地足球运动氛围、争取社会和政府的支持和提高雪地足球运动员素质等建议.