"会健体"能力培养"五步走"

2009年暑期,苏州教育局向学生提出了"会休息""会自学""会健体"的"三会"要求,这种"课外教育"新模式对教师提出了更高的要求.作为体育教师,应该充分调动学生参加课余自主健体的积极性,教给他们科学的健体方法,把课堂教学任务有效地转化为学生课外自觉积极的自主锻炼行动,努力培养和提高学生"会健体"的能力.     

"真爱"换"真心"

在低年级课堂教学中,笔者根据学生的生理、心理特点,坚持"从真爱每一个孩子做起",用自己的"真爱付出"换取孩子们的"真心对待",真心对待老师、同学,唤起学生的学习欲望,让学生乐意"为老师"读书,真心对待数学学习. 一、表扬是最直白的爱 如今的孩子见多识广,大多数爱表现、有个性,更喜欢听到他人的夸奖.     

"物质的量"与"靡尔"之教学体会

在以往的教学实践中发现,有一部分学生因为不理解"物质的量"这一概念,而失去对化学学习的兴趣,甚至有放弃学习化学的念头.因此,我特别重视"物质的量"这一章节的教学. "物质的量"是化学中一个很重要的基本概念,然而"物质的量"这一概念对学生来说非常抽象、难懂.但实践证明,学生对"物质的量"的理解程度直接影响到后面的有关摩尔质量、气体摩尔体积等基本概念和计算的学习,为此,在实际教学中,要尽可能找出不同的方法,去调动学生的思维,做到教师教的轻松,学生学的愉快.     

浅谈如何做好初中数学课堂中的"教"与"学"

如何在初中数学课堂中做到教师"教"与学生"学"相互促进,让学生学在乐中,学中有乐,是每位初中数学教师需要思考的一个问题.文章从让学生明确学习目的树立正确学习观、激发学习兴趣提高自主学习热情、多管齐下抓好课堂效率以及引到学生养成良好的数学学习能力这几方面进行了"教"与"学"的讨论.     

刍议作文教学的"放"与"收"

面对学生写作难的现状,老师应帮助学生寻找一些能激发他们写作兴趣的方法,帮助他们,让他们摆脱困境.多年的教学经验告诉我:作文教学应处理好教学的"放"与"收",打开学生的心窗,让其文思奔涌.     

高校学生干部中倡导新"三心二意"

高等学校学生干部作为大学生中的骨干力量,在学生工作中正发挥着越来越重要的作用,对高校学生干部的培养工作研究已成为高等学校学生工作研究的热点.本文提出在高校学生干部倡导新"三心二意"工作方式和态度:学生干部要"虚"心,虚心学习,虚心请教;学生干部要"贪",心,要"食"支持,要"贪"反响,要"贪"创新;学生干部要"粗"心,要统筹全局,把握要领,粗细得当,旨在培养一支离素质的学生干部队伍,以有利予高校学风的建设及各项工作的顺利开展.     

给"差生"点"偏爱"

有人做过一个调查,从整体上来分析人的话,高智者有2%,弱智者有3%,而95%都在正常范畴内,先天的智力差别并不大,所谓的"差生"是一个人为的歧视性概念,因此,"后进生"变成了他们的另一个称呼.那么我们作为教书育人的专门工作者,对于应该怎样对待"后进生",即所谓的"差生",我觉得要看情况而定.这些学生大致上可分为两种,有特殊爱好、特长,然而却成绩不好的学生是一种;另一种是比较懒散、不爱学习的学生.在进行教育教学时,我认为无论是转化前一种学生还是转化后一种学生,我们都应给差生多点"偏爱".     

从"讲师"到"导师"

新课改下,教师角色的转变至关重要,我们要通过教的改变促进学生学的改变,本文在从"讲师"到"导师"的转变方面做了一定的阐述.     

音乐课堂也需"互动"

在学习新课标的同时,所感悟到研究我们的学生,创造出我们的方法,改变传统的教学模式,激发学生学习音乐的浓厚兴趣,调动他们学习的积极性,使学生变"厌学"为"乐学",变"被动学习"为"主动学习",在音乐教学中实施自主学习,放手让学生在音乐的环境中学习音乐、理解音乐、感悟音乐、表现音乐.真正给学生一个展示的舞台,一个锻炼的机会,一个成功的体验.     

浅谈"兴趣"与"创新"

没有"兴趣",就没有"创新"."兴趣"是孩子各种创造力,求知欲的原动力,只要孩子对某种事物产生兴趣,就会无止境地去追求、去实践、去发展、去创新.在教学中,我们体会到,凡是学习兴趣浓厚的学生,求知愿望就强烈,综合素质会得到较快发展.因此教学必须从转变学生的学习态度、学习情感、提高学生的学习兴趣人手,使学生由机械、被动学习转变为积极创造、主动快乐地学习.     

转炉炉壳热应力分析

根据实际转炉建立实体模型。以有限元为手段,考虑了炉衬和炉壳材料的物性参数随温度变化的特点和炉衬与炉壳之间膨胀间隙,计算了转炉炉壳在温度载荷和炉衬膨胀压力同时作用下的热应力。所得结果可为转炉炉壳设计提供依据。     

焦炭热性能指标意义浅析

通过对焦炭在高炉内的历程及其变化规律的剖析,阐述焦炭热性能指标的意义,形象地把焦炭在高炉内的损耗分为三部分(M1,M2,M3)。指出M2对焦比及焦炭价格有一定的指导作用。     

Results of treatment of cancer of the cardia

Cancer of the cardia is traditionally discussed with cardiac cancer of the lower portion of the esophagus and upper gastric cancer invading the esophagus, and the specific characteristics of cancer of the cardia have never been clearly defined. We reviewed the outcome of 172 patients with adenocarcinoma of the cardia who had undergone radical surgery between 1949 and 1994 in the Division of Gastrointestinal Surgery of the Cancer Institute Hospital. The centers of the tumors were located within 2 cm above and below the boundary between the esophagus and the stomach, and their longitudinal diameter was less than 8 cm. We divided the patients into an early period (1949-1979; n = 79) and a late period (1980-1994; n = 93), and focused on the historical transition. There were no differences in patient gender or histology between the two periods. However, the late period was associated with fewer cases of esophageal invasion and shorter longitudinal diameter, as the age of the population advanced. The number of advanced cancers such as the localized and infiltrative type had decreased, and early cancer and early clinical stage had become more common, but despite the fact that the number of early cancers had increased, extended dissection, such as thoracic and paraaortic lymph node dissection, was performed more frequently. By clinical stage, the long-term outcome markedly improved in Stage I patient in the late period, and tended to improve in Stage II and III patients. This appears to have been attributable to the prevention of micrometastasis by extended dissection, although the number of early cancers is another major potential cause. There were no differences in the outcome of Stage IV patients between the two periods, and further advances in multimodality therapy must be awaited. The range of resection is basically proximal gastrectomy, and if there are adequate indications, the prognosis is favorable. In view of the status of lymphatic flow and lymph node metastasis, and long-term results, lateroaortic lymph node dissection is important. Since the number of early cancer patients has been increasing, if intraabdominal recurrence is prevented, intrathoracic lymph node dissection will contribute greatly to the outcome of such patients.     

The effect of amount of possession of the trait of hostility on accuracy of perception of hostility in others.

Some theories of personality hold that an individual's perception of others is influenced by his own personality characteristics; more specifically, that a trait of low social value will be projected more into others, and that insight into the possession of these characteristics reduces this distortion. These 2 hypotheses were tested by having a group of college students rate each other (including themselves) on degree of friendliness or hostility. Agreement with group rating about self yielded the insight score. In general, the hypotheses were supported; the "friendly" Ss were most accurate in their perception of others, and insight was positively associated with accurate perception. From Psyc Abstracts 36:04:4HL16M. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Comparison of rates of infection of two methods of emergency ventricular drainage

The rates of infection of two methods of external ventricular drainage in use at Atkinson Morley's Hospital--namely, (a) percutaneous drainage with Rickham reservoirs and (b) tunnelled ventriculostomies--were compared in this retrospective review. Percutaneous drainage of CSF with Rickham reservoirs was associated with a 27% rate of infection as identified by positive microbiological cultures; tunnelled ventriculostomy catheters had a 10% infection rate. The difference in the infection rate between the two methods was statistically significant (P < 0.015). Other variables examined, including the age and sex of the patients and the reasons for ventricular drainage, were not associated with an increased rate of infection. Most infections from either method were caused by a coagulase negative staphylococcus. The average duration of ventricular drainage before identification of positive cultures was 5.7 days for Rickham reservoirs and 6.0 days for ventriculostomies.     

浅析《野草》的版画特征

鲁迅先生一生热爱美术作品,对版画中木刻兴趣尤甚.<野草>作为其"写心之作",亦呈现出一些与木刻版画一致的审美特征:一是具有木刻版画的色彩特征,多对比、多冷色,有阴郁的美感;二是具有木刻版画的力度特征,环境描写、人物刻画处处刀锋毕现,遒劲有力,有一种"力之美".     

四辊破碎机车刀架的改造

针对四辊破碎机车刀架车削中存在的几个问题,详细介绍了电动车刀架的结构和工作原理,建立主要设计参数的数学表达式,并进行适当的分析。改造后,这种电动车刀架运行平稳、可靠、方便、省力,取得了预期的效果。     

Effect of antibiotics of chemotaxis of human leukocytes

The effect of 20 different antibiotics on chemotaxis by human neutrophils was studied. Human leukocytes incubated with chloramphenicol, rifampin, sodium fusidate, and tetracyclines in vitro showed markedly depressed migration. The mechanisms by which these antibiotics affect leukotaxis are discussed.