我国就业压力的成因及其解决对策

目前,我国存在着较为严重的失业现象,解决就业问题对维护社会稳定,促进经济发展,全面建设小康社会具有重要的意义。在深入分析我国就业压力成因的基础上,提出政府在解决国民就业问题上应采取的积极调控措施。     

高校青年教师心理压力成因与对策

高校青年教师所处的特殊位置、环境和所担当的特殊角色、使命,使其在社会变革和转型过程中承受着多方面的心理压力,需要社会、学校、家庭和教师本人共同努力,采取切实措施进行有效疏导、调适和应对。     

Reliability of arterial spin labelling measurements of perfusion within the quadriceps during steady-state exercise

Arterial spin labelling (ASL) provides a potential method to non-invasively determine muscle blood flow and examine the impact of interventions such as supplementation and training. However, it's a method with intrinsically low signal, leading to limitations in accuracy and temporal resolution. To examine these limitations, the current study measured perfusion via ASL on three occasions in the rectus femoris of 10 healthy adults, during light and moderate exercise, over three different exercise durations. For data sampled over 9 min, light intensity exercise gave an average perfusion of 35.0 ± 5.1 ml/min.100g^?1 with a coefficient of variation (COV) of 16% and single intraclass correlation coefficient (ICC) of 0.67. For the moderate bout, perfusion was 51.3 ± 5.6 ml/min.100g^?1 (COV 10%, ICC 0.82). When the same data were analyzed over 5 min 24 s, perfusion was 37.8 ± 11.13 (COV 30%, ICC 0.13) during light and 49.5 ± 8.8 ml/min.100g^?1 (COV 18%, ICC 0.52) during moderate exercise. When sampling was reduced to 1 min 48 s, perfusion was 41.2 ± 13.7 (COV 33%, ICC 0.26) during light and 49.5 ± 13.6 ml/min.100g^?1 (COV 28%, ICC 0.04) during moderate exercise. For 9 min a significant perfusion difference was found between the exercise intensities; however, this was not the case for sampling over 5 min 24 s or 1 min 48 s. Such findings illustrate the potential of ASL to non-invasively monitor muscle perfusion under steady-state conditions, but highlight that extended exercise protocols are necessary in order to generate date of sufficient reliability to be able to discriminate intervention dependent perfusion differences.     

浅圆仓侧压力分析

Rankine理论和Coulomb理论均不适合用于浅圆仓的侧压力计算. 基于此, 本文研究了浅圆仓散料侧压力的实际分布规律及计算方法. 根据极限平衡理论, 首先得到散粒体作用在单位周长的仓壁上的合压力, 然后通过严格的数学推导, 得到浅圆仓侧压力的分布规律. 结果表明, 本文结果与实仓试验结果相符, 说明本文公式不论对平堆还是锥堆都比较适合, 而Rankine理论和Coulomb理论用于浅圆仓均有缺陷.     

吸血蛭与非吸血蛭间的氨基酸比较研究

为探究传统中药水蛭的药用成分，更好地开发利用蛭类资源，本文通过高效氨基酸分析仪，分析了云南四种蛭类的氨基酸组成．结果表明吸血蛭与非吸血蛭在氨基酸组成上有明显差异．结合以往实验，分析了非吸血蛭活血化瘀的可能药用成分，为合理开发利用蛭类资源提供了资料和建议．     

矿井多风机风压优化计算机调节系统设计

经过对多风机通风网络分析,利用现有的VNETPC模拟程序,建立了多风机风压优化计算机调节系统.该系统允许计算机自动调整多风机风压,直到各用风地点获得最佳可接受的风量分配为止.     

便携式多参数监护仪的研制

本介绍了一种便携式人体多参数监护仪的研制方法，包括：心电检测、血压检测、血氧饱和度检测、呼吸检测模拟电路的设计，以及存储单元、A／D转换器、USB通讯口等接口模块的设计。     

Voices of teacher candidates of color on white race evasion: ‘I worried about my safety!’

Abstract

This qualitative study investigated the negative impacts minority teacher candidates receive from white teacher candidates in a required multicultural education class. The findings reveal that four teacher candidates of color had difficulty positioning themselves among the overwhelming silencing power of whiteness in the class. The white students were tactful at evading power and race and flattening the existing hierarchical power relations through the discourses of colorblindness and by preying on the minority instructor. Their understanding of diversity was also shallow. On the other hand, the teacher candidates of color were afraid that they might be labeled as the ones who spoke up against the white students and fearful of the possibility of retaliation and ostracism from the white peers. It seems that the teacher education program’s structure allowed the white candidates to impose strong negative peer pressure on the teacher candidates of color.     

新课程改革中教师心理压力探析

新一轮基础教育课程改革在为教师提供更为广阔的发展空间的同时,也给教师的心理带来极大的压力,主要表现为由新旧理念的撞击、教师权威的重构、教师素质的重塑、课程资源的匮乏、教育评价的滞后等因素而引发的矛盾、抵制、失落、沮丧、危机、恐慌等消极心理反应。正确理解教师在新课程实施中产生的这些心理压力,并采取有效的措施缓解其心理压力能确保课程改革的有效实施。     

论《上海屋檐下》的抒情氛围

作为夏衍美学思想转变后的一力作,其成功自有多方面的因素,但作品中刻意营造的情景氛围 无疑是作品获誉的一个关键,抗战前夕险恶的政治环境下小人物方方面的悲苦,生活重压下"屋檐下"住户们扭 曲了的情感生活,梅雨天带给他们的无尽的烦恼,这些共同组成该剧阴晦沉闷的情感基调,孩子们的歌声透给 这一情调丝丝的亮色。