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1.
由于三轮带传动的结构特点与普通的带传动不同,使得中心距、带长、带轮包角等参数的计算与普通带传动有较大区别,本文通过分析,得出了三轮带传动的设计计算方法,解决了现场使用中三轮带传动的设计问题。  相似文献   

2.
为了提高杠杆传动重力式力量训练器械的性能,探索器械的优化设计方法.研究以模拟人体膝关节肌力矩为例,通过实验获得人体膝关节伸肌等动向心收缩的力矩一角度特征曲线,采用图解法对杠杆传动重力式力量训练器械的阻力矩进行肌力矩的模拟,优化设计器械杠杆传动装置.结果:优化设计的器械改变了传统设计杠杆末端点与滑轮拉力作用点之间的位置关系.优化定位了滑轮拉力作用点相对于杠杆末端点的位置.结论:优化的设计使得器械阻力矩相对于传统设计而言更符合人体肌力矩,解决了器械的全载负荷问题并在一定程度上解决了可利用惯性、肌肉疲劳和器械噪声等问题.  相似文献   

3.
社会工作"在地化"是指利用在地资源、培养在地社工人才、发展在地经济文化、探索社会工作可持续发展路径.2020年是我国脱贫攻坚战收官之年,社会工作"在地化"发展在后续乡村振兴工作中大有可为,但也面临着行政化与专业化两难、无限管控与有限权责冲突、专业性和专业价值缺失与融入性和排他性共存等问题.针对社会工作"在地化"发展困境,提出在党的领导下实现在地职能、在地价值和在地文化融入的解决对策,对社会工作"在地化"发展介入乡村振兴战略具有现实意义.  相似文献   

4.
张莉 《职大学报》2013,(2):102-103,124
目前,马铃薯是包头市仅次于玉米的第二大粮食作物,近几年,包头市制定了"南菜北薯"的发展规划。随着农业结构调整和市场的影响,马铃薯生产逐渐向产业化、规模化、商品化方向发展,种植面积不断扩大。  相似文献   

5.
本文阐述了"液压与气压传动"课程开展教学改革的运作经验。CDIO是当前高等工程教育的一种新型教育模式,它以培养具有一定工程能力的应用性人才为目标。本文针对液压与气压传动课程当前教学中存在的问题,分析了工程教育理念和社会对机械类人才在知识、能力和素质的要求,提出了在课程教学中突出"一个核心、两把钥匙和三个层次实践"的改革思路,从教学内容、教学模式、教学资源、教师角色转型和教学评估等方面进行教学改革,实践表明实施教学改革后《液压与气压传动》课程取得了很好的教学效果,达到了人才培养目标,并在机械设计制造及其自动化的其他课程中进行推广。  相似文献   

6.
农村改革三十年以来,"三农"问题始终关系到我国改革、发展、稳定的大局.随着我国现代化进程的推进,"三农"问题在旧的问题解决以后又会产生新的问题,我国农村30年改革在创造了巨大的绩效并有力地推动了农村的社会变迁与现代化进程的同时,也带来了一些急待解决的现实问题.文章着重对农民增收问题以及维护农民土地稳定、加速农村社会保障制度的创新等问题提出了思路和对策.  相似文献   

7.
一段时期以来,学术界对人民币汇率改革讨论的焦点是:"水平"与"机制"孰先?从理论上讲,在"水平"与"机制"两个层面上,机制问题是根本.解决机制问题,有助于克服简单解决水平问题引起的投机现象.而且在某种条件下,出色地解决机制问题也有助于解决水平问题.但机制问题的解决任重而道远,水平问题的解决则更加迫在眉睫.本文明确提出:应通过采取一种相对柔性的、有弹性的方法--扩大汇率浮动区间的方法优先解决"水平"问题.  相似文献   

8.
纪检监察信访工作是党风廉政建设和反腐败工作的重要组成部分,纪检监察机关通过接收群众来信、接待群众来访、接听举报电话等渠道,并按照纪检监察职能和规定程序处理解决有关信访问题.纪检监察工作人员,只有树立"为民"意识、"公心"意识、"诚信"意识、"自励"意识,才能更好地做好纪检监察信访工作.  相似文献   

9.
中国体育产业发展的制约症结及其法律环境建设   总被引:1,自引:0,他引:1  
中国体育产业的发展与庞大的体育消费市场和丰富的体育竞赛资源严重不符,这与中国是体育产业后发国家有关,更与中国体育产业发展所需的制度环境有关.在中国体育产业的发展中,存在<中华人民共和国体育法>的法律制约、集权式体育"自治"的管理制约、产权界定不清导致的经济学制约、纠纷裁决上的机制制约等4个制约症结.中国体育产业能否迅速发展壮大,与这些制约症结的根本解决紧密相关.从修改现行<体育法>、协调体育"自治"与"法治"的关系、创新体育产业的产权制度、建立完善的纠纷裁决机制等几个方面入手,加强体育产业发展所需的法律环境建设,能很好地解决这些问题,保障并最终促进中国体育产业的发展壮大.  相似文献   

10.
螺旋传动具有省力和自锁两大特性,常被用于各类起重或加压装置、夹具以及调整测量机构中。而在螺旋机构的设计中,螺旋传动的方向判定尤为重要。在以往的螺旋传动方向判定中,多采用的是"左右手定则"来判断,此方法在判定不同种类的螺旋运动时,所获得的结论也会不同,易引发理解错误及概念混淆。本文从螺旋传动原理入手,分析出关于螺旋传动在方向判断上的一种新解法,并利用实例讲解该方法的使用及其与"左右手定则"的比较判定,从中得出该方法具有简单易懂,便于记忆的优点。  相似文献   

11.
Since the late 1960s,culture has been considered tighter with communication.Culture IS based on the community of communication.Communication involves people and their environment.Thus culture is an important factor in communication.Today with modem economic and technological development,intercultural communication is mole important than ever before. When people from different cultural background communicate with each other,their social stereotype pattern of behavior, their habits of language and thought differ from one another,because these are the possible factors that affect intercultural communications.Culture norms also change,culture may be transferred as signs but we have to study and understand the above carefially.  相似文献   

12.
The article introduces Shakespeare's tragedy "Hamlet".Hamlet wants to revenge for his father.But when the opportunity is coming,he delays his revenge.The passage analyzes the causes of his delay from Hamlet's characters.  相似文献   

13.
The thesis mainly discusses the character of the heroine in Charlotte Brontes famous novel "Jane Eyre". There are three major parts-introduction,analysis which is the main body of the thesis,and conclusion.Jane Eyre,the heroine,is a new woman image who requires independence equality and freedom.The thesis just analyzes Janes these rebellious characters through four peroods of her experiences.First,in her childhood,she has shown her rebellious spirit.As an orphan,Jane suffers a lot of misery.Not only her aunt treats her cruelly,her cousins despise her,but also do servants have a prejudice against her.In Janes immature heart, she is unwilling to bear ill treatment.She rebels them bravely.Second,when she studies at Lowood,her rebellious spirit is exposed furtherly.Her view doest stay in Mrs Reeds,instead turns to the whole society.She makes hypocrisy of so-called charity to be discovered completely.At the same time,she declares her independent,equal rebellious thought to her friend-Helldn who endures oppression willingly.Third,she,as a governess in Thornfield Hall falls in love with Rochester-her master.During this period,her thought grows into maturity.Thought she loves him passionately,she never loses her dignity and independence for him.When she knows his mad wife still lives,she makes up her mind to leave him.For she doesnt want to become his mistress.Fourth,her refusal of St Johns proposal of marriage depicts Janes character.She knows John does not love her at all and his purpose of marriage is only to perform his great task missionary.Jane does want to become a sacrifice.She breaks traditional morality,then she goes back to Rochester.  相似文献   

14.
The context of a word consists of the other words surrounding it and the situation in which it is used.When we come across a new word in our reading,instead of looking it up in a dictionary for its definition,we can guess its meaning from its context.  相似文献   

15.
当代中国武术经历了时代的沧桑和变迁,在历经了文化和历史的发展与洗礼之后,依然发展、繁衍至今。在这样一个漫长的过程中,伴随着以社会环境和社会人群价值取向为主的变迁与变化,当代中国武术的发展与当代社会的发展正逐渐的呈现出某些相背离和不和谐的表象。通过研究,我们发觉中国武术中原本一些内在的东西正在不断的被遗忘,正在不断的流逝。本文试从中国武术在当代发展中的问题境域入手,解读中国武术在当今世界和社会中存在的一些问题,希望能够从中找到中国武术发展的"合法性"或"合时性"的内在依据,以挺立中国武术的脊梁。  相似文献   

16.
Introduction Whatisculture?Toputitsimply,culturemeansthe totalwayoflifeofaperson.Thissimpledefinitionimplies thatculturereferstothepattersofcustoms,traditions,socialhabits,values,beliefsandlanguageofasociety.As cultureissoinclusive,itincludesvirtuallyeverythingthat agroupofpeoplethink,say,doandmake.Followingthedefinitionofsociologists,theterm culturereferstothetotalpatternofbeliefs,customs,institutions,objects,andcharacterizesthelifeofhuman community.“Cultureconsistsofallthesharedproductsof …  相似文献   

17.
"Midnight"is a poem written by Archibald·Lampman,a Canadian poet,who loved nature very much,but his poor health prevents him from being very active in the outdoor life.So he is often the quite,thoughtful observer of nature in his poems.This article mainly talks about how to appreciate the poem in the following aspects:word selecting,rhyme,sentence structure and atmosphere.After reading this poem,we cannot get rid of the air of horror and mystery."Midnight" reveals another aspect of the nature:wild,rough and unknown.There is something else in the nature that can awe human beings even though we don't know what it is.  相似文献   

18.
Chapter Ⅰ Introduction Sitting in the rocking chair,Carrie dreams her future.This is the deep impression the novel"Sister Carrie"gives us,which is written by Theodore Dreiser(1871-1945),the great American realism writer.  相似文献   

19.
运用临场观察统计法、访谈法、文献资料法以及归纳法等研究方法,对现阶段国内青少年足球守门员防守技术运用情况进行统计与分析研究.结果表明:判断反应与选位能力不足是青少年守门员防守技术失误的主要原因,预判失误与技术粗糙以及缺乏自信等导致青少年守门员对抗条件下难以有效发挥位置优势,强干扰情况时出击争夺球失误多,重视反应训练和提高接球动作质量要求是提高青少年守门员技术水平的重中之重.  相似文献   

20.
提高体校学生的语素质的主要途径是课堂教学。体校语教师在教学过程中必须根据学生身心特点.设置合理的结构模式,以便顺利实现教学目标。  相似文献   

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