幼儿快乐英语情境教学——南京晓庄学院学前教育专业幼儿英语教学法课程改革     

徐虹 《南京晓庄学院学报》2006,22(5):96-99

幼儿英语教学法已经成为学前教育新兴的一门专业课程,幼儿英语教学法课程改革是一项具有创新意义的课题。改革后的课程在授课模式上讲求理论与实践的紧密结合,在授课内容上强调与语言课程的分离,其基本特征为平等对话、角色变换、园园合作、共同创造。  相似文献   

The effect of 14 weeks of vitamin D3 supplementation on antimicrobial peptides and proteins in athletes     

Cheng-Shiun He  William D. Fraser  Jonathan Tang  Kirsty Brown  Stephen Renwick  Jay Rudland-Thomas 《Journal of sports sciences》2016,34(1):67-74

Heavy training is associated with increased respiratory infection risk and antimicrobial proteins are important in defence against oral and respiratory tract infections. We examined the effect of 14 weeks of vitamin D₃ supplementation (5000 IU/day) on the resting plasma cathelicidin concentration and the salivary secretion rates of secretory immunoglobulin A (SIgA), cathelicidin, lactoferrin and lysozyme in athletes during a winter training period. Blood and saliva were obtained at the start of the study from 39 healthy men who were randomly allocated to vitamin D₃ supplement or placebo. Blood samples were also collected at the end of the study; saliva samples were collected after 7 and 14 weeks. Plasma total 25(OH)D concentration increased by 130% in the vitamin D₃ group and decreased by 43% in the placebo group (both P = 0.001). The percentage change of plasma cathelicidin concentration in the vitamin D₃ group was higher than in the placebo group (P = 0.025). Only in the vitamin D₃ group, the saliva SIgA and cathelicidin secretion rates increased over time (both P = 0.03). A daily 5000 IU vitamin D₃ supplement has a beneficial effect in up-regulating the expression of SIgA and cathelicidin in athletes during a winter training period, which could improve resistance to respiratory infections.  相似文献   

矿井轴流式主要通风机经济运行探讨     

余永来 《淮南职业技术学院学报》2002,2(3):73-75

轴流式通风机是煤矿常用的一种通风设备，用于矿井通风的轴流式风机，不仅功率大而且长时运转，因此，它是煤矿耗电量较大的机械设备之一。针对轴流式风机能量损失的一些原因作以分析，并提出使之可达到经济运行的若干技术措施。  相似文献   

英语课程改革理念探究     

耿霞  王丽华 《焦作大学学报》2003,17(4):103-104

章主要阐述基础教育课程改革所倡导的活动式教学方法的特点和优越性，并探讨了如何在英语教学中采用活动式教学方法。  相似文献   

高校现金流量表编制的依据与编制方法初探     

于洪祥 《天津职业院校联合学报》2007,9(6):127-130

随着我国高等教育事业的发展,高校财务活动已不再是简单的取得财政、事业收入,拨缴规定款项,和核算相关支出。作为会计主体,高校会计核算的内容正逐步走向多样化、复杂化。鉴于这种情况,应尽快在高校财务报表体系中增加现金流量表,全面反映一个学校一定会计期间现金流入、流出和净增加(减少)情况,以改变现行高校会计信息披露不完整,决策依据不充分的现状。  相似文献   

中国基础研究类高层次科技人才流动特征分析 ——以环境领域为例     

赵伟 《中国科技资源导刊 (中国信息导报)》2016,(4):81-86

探寻我国基础研究类科技人才,尤其是高层次科技人才的流动特征和规律,对于制定我国基础研究类科技 人才发现、培养和发展的政策具有重要意义。本文以环境领域国家杰出青年科学基金获得者为研究对象,对中国该领 域基础研究类高层次科技人才的机构流动和国别流动特征进行分析。基于马斯洛需求理论,进一步对不同动机产生的 人才流动所对应的年龄分布进行探讨,为我国基础研究类高层次科技人才的政策制定提供参考和借鉴。  相似文献   

One hundred and fifty years of sprint and distance running – Past trends and future prospects     

Martin Weiss  Alexandra Newman  Ceri Whitmore  Stephan Weiss 《European Journal of Sport Science》2016,16(4):393-401

Sprint and distance running have experienced remarkable performance improvements over the past century. Attempts to forecast running performances share an almost similarly long history but have relied so far on relatively short data series. Here, we compile a comprehensive set of season-best performances for eight Olympically contested running events. With this data set, we conduct (1) an exponential time series analysis and (2) a power-law experience curve analysis to quantify the rate of past performance improvements and to forecast future performances until the year 2100. We find that the sprint and distance running performances of women and men improve exponentially with time and converge at yearly rates of 4% ± 3% and 2% ± 2%, respectively, towards their asymptotic limits. Running performances can also be modelled with the experience curve approach, yielding learning rates of 3% ± 1% and 6% ± 2% for the women's and men's events, respectively. Long-term trends suggest that: (1) women will continue to run 10–20% slower than men, (2) 9.50 s over 100 m dash may only be broken at the end of this century and (3) several middle- and long-distance records may be broken within the next two to three decades. The prospects of witnessing a sub-2 hour marathon before 2100 remain inconclusive. Our results should be interpreted cautiously as forecasting human behaviour is intrinsically uncertain. The future season-best sprint and distance running performances will continue to scatter around the trends identified here and may yield unexpected improvements of standing world records.  相似文献   

自力式流量控制器在热网中的应用     

王秋玲  田德华 《河北能源职业技术学院学报》2003,3(4):70-72

开滦荆各庄热水采暖系统98年以前采用普通阀门调节流量，定量困难，由于在检修过程中频繁开关，导致调节功能失效，供暖用户冷热不均。自98年后逐步改用了自力式流量控制器进行流量控制，改后，在使用过程中解决了以往存在的各种问题，实现了节能节水的效果。  相似文献   

连续定态传热过程平均温差的统一推导     

琚行松  赵红丽 《唐山师范学院学报》2007,29(2):28-30

采用统一的方法对定态传热逆流和并流的平均温差进行了推导。推导过程无需假定冷热流体的特定流向,并利于得到对数平均温差“同侧相减”的规律。  相似文献   

论中国共产党制定农村土地政策的历史经验   总被引：3，自引：0，他引：3  

胡穗 《湖南师范大学社会科学学报》2007,36(1):12-15

八十多年来,中国共产党制定农村土地政策的历史经验可以总结为:一是始终坚持以发展着的马克思主义为指导,弘扬与时俱进的精神,在理论与实践的结合中勇于创新;二是始终紧紧围绕党的政治路线,服从和服务于党在不同时期的历史任务;三是始终坚持把推动还是束缚生产力的发展,作为检验农村土地政策正确与否的根本标准;四是始终坚持政策演进的力度和速度与社会可以承受的程度相协调;五是始终坚持把满足农民群众的利益要求、调动农民群众的积极性作为首要出发点.这些历史经验,可为当前社会主义新农村建设中的农村土地政策的正确选择和设定提供有益的历史借鉴和启示.  相似文献