增强型出版物模型比较分析     

宋宁远  王晓光 《中国科技期刊研究》2017,28(7):587-592

【目的】 出版物模型创新是语义出版的核心内容。对增强型出版物模型进行比较分析,是进一步开发新型出版物的基础,对语义出版的未来发展具有极强的借鉴意义。【方法】 在回顾语义出版相关研究的基础上,搜集五种具有代表性的增强型出版物模型,从内容表达能力、外部资源集成和阅读环境三个方面进行比较分析。【结果】 总结增强型出版物模型的特点,认为现阶段增强型出版物存在模型架构趋同,语义增强方式不均衡,出版本体涉及较少等特点。【结论】 增强型出版物在知识服务、屏幕阅读、科学交流等方面具有深远的意义,需要更进一步的发展。  相似文献   

社会转型期南通中小企业的自主创新能力     

孙泊  陈瑶 《南通师范学院学报》2010,(1):33-37

提升南通市中小企业自主创新能力,须从六个方面合力推进：一是寻求突破,积极完善政府管理功能,创建自主创新的和谐环境;二是大力培育各类创新人才,构筑自主创新的人才高地;三是创建自主开放创新的企业文化,营造自主创新的精神家园;四是着力提高引进外资的技术含量,提升自主创新的“外援”水平;五是是加强引进消化吸收再创新,建设自主创新的“内化”通道;六是坚持开放合理配置科技资源,推进自主创新的整体联动。  相似文献   

使用输入强化理论改进大学外语教学     

王礼健 《安庆师范学院学报(社会科学版)》2010,29(6):51-54,58

克拉申的输入假说和史密斯的输入强化理论对于语言习得过程有着深刻的揭示。将输入理论应用于大学英语实际教学并对其效果作出检测,发挥输入理论的指导功能,这对解决国内课堂输入中存在的现实问题,具有重要意义。  相似文献   

The differential effects of PNF versus passive stretch conditioning on neuromuscular performance     

《European Journal of Sport Science》2013,13(3):233-241

Abstract

The effects of flexibility conditioning on neuromuscular and sensorimotor performance were assessed near to full knee extension (25°). Eighteen males who were randomly assigned into two groups underwent eight weeks (three-times per week) of flexibility conditioning (hip region/knee flexor musculature; dominant limb) involving either proprioceptive neuromuscular facilitation (PNF) (n=9) or passive stretching (PASS) (n=9). Both modes of flexibility conditioning are popular within contemporary exercise and clinical settings and have demonstrated efficacy in improving range of motion. The contralateral limb and a prior ‘no exercise’ condition were used as controls. The PNF and PASS modes of conditioning improved passive hip flexibility to a similar extent (mean 19.3% vs. baseline, intervention limb, p<0.01) but did not alter knee flexor strength (overall mean 309.6±81 N) or sensorimotor performance (force and positional errors: 2.3±8.2% and 0.48±7.1%). Voluntary and magnetically evoked electromechanical delays (EMD_V and EMD_E, respectively) were increased but to a greater extent following PASS compared to PNF (PASS: 10.8% and 16.9% lengthening of EMD_V and EMD_E, respectively vs. PNF: 3.2% and 6.2%, p<0.01).The attenuated change to electromechanical delay (EMD) performance during PNF conditioning suggests a preserved capability for rapid muscle activation, which is important in the maintenance of dynamic joint stability. That PNF was also equally efficacious in flexibility conditioning would suggest that this mode of flexibility training should be used over passive to help preserve dynamic joint stability capabilities at this extended and vulnerable joint position.  相似文献   

换热器节能设计分析     

韩国栋 《中国科技纵横》2013,(9)

换热器中采用节能技术不仅能提高能源利用率,减少金属材料的消耗,而且对推进石油、化工、制药等行业的节能减排工作有着积极意义。介绍了常用管壳式换热器换热管强化传热技术和壳程强化传热方法,分析了各自的原理、优缺点及推荐使用场合。  相似文献   

基于谱减法的语音增强算法研究     

王雪梅  李玲  刘朝 《职大学报》2013,(6):85-87

在通信质量日益提升的现代通信时代,对语音信号的处理研究仍然是一个基本而复杂的课题。在语音增强技术中产生了众多处理方法。笔者在谱减法的理论研究基础上,验证了谱减法对语音信号的语音增强在技术上有明显的效果。但是在谱减法中的＂音乐噪声＂处理上还是不如人意,仍然会出现节奏性的噪声,这也是日后不断需要研究的方向,以实现语音增强技术的理想化。  相似文献   

Throwing performance in water polo is related to in-water shoulder proprioception     

Andrea H. Hams  Kerrie Evans  Roger Adams  Gordon Waddington  Jeremy Witchalls 《Journal of sports sciences》2013,31(22):2588-2595

ABSTRACT

Water polo players require a high level of upper-extremity strength, flexibility and coordination to achieve a peak level of throwing performance. Increased levels of shoulder proprioceptive acuity, strength and range of motion (ROM) have been previously associated with higher sporting performance. A coach-rating scale, used to quantify an athlete’s kicking proficiency in soccer; was adapted in the current study to measure each coach’s subjective expert opinion regarding athletes’ throwing mechanics, velocity, and accuracy. To examine this hypothesis shoulder proprioception acuity of 18 water polo players was measured both in-water and on-land using an AMEDA apparatus and correlated with coach-rated throwing performance and clinical measures of shoulder strength and ROM. There was a moderate positive correlation between the in-water and the on-land proprioception acuity (r = 0.47, p < 0.05). The in-water score showing a strong positive correlation with coach rated throwing mechanics (r = 0.68, p < 0.05) and velocity (r = 0.75, p = 0.02), suggesting that superior proprioception acuity contributed to fast, mechanically-efficient throwing. These findings support the notion that in-water proprioceptive acuity is an important determinant of the throwing performance achieved by water polo athletes and its measurement may be a valuable adjunct to current athlete screening.  相似文献   

校园文化建设与民族精神的培育     

赵高彩 《湖北广播电视大学学报》2003,20(4):72-74

高校校园文化建设既是中国特色社会主义文化建设的重要方面,又是国民教育过程中的一个重要环节。本文从校园文化建设是民族精神培育的重要途径、以社会主义文化为主体的校园文化建设与民族精神的培育、以中华民族文化为主体的校园文化建设与民族精神的培育三个方面探讨了高校校园文化建设与民族精神的弘扬和培育之间的关系。  相似文献   

改善和加强高校教学管理的主要途径   总被引：1，自引：0，他引：1  

周小海 《伊犁教育学院学报》2004,17(2):150-153

推进学校教学管理改革是培养学生创新精神与创新能力的需要，新时期教学改革和教学建设的内容更加综合化，尤其是高等教育大众化后，教学管理面临着诸多新问题，这一切必然要求对已有的整齐划一的教学运行模式和比较僵化的教学管理体制进行改革。所以，目前改善和加强高等学校的教学管理重点要做好以下工作：优化教学管理人员的素质；进一步改革教学管理制度；理顺管理机制；促进教学与科研的结合；加快推进教学管理手段现代化。  相似文献   

基于噪声鲁棒性特征和SVM的耳语音可懂度增强(英文)     

周健  赵力  梁瑞宇  方贤勇 《东南大学学报》2012,(3):261-265

提出了一种基于机器学习的耳语音可懂度增强方法.该方法利用已经训练好的2类支持向量机来估计一个二元时频掩蔽值,进而合成增强后的耳语音.输入支持向量机的特征向量GFCCs是基于听觉外周模型进行提取的,具有噪声鲁棒特性.在增强仿真实验中,将该算法同传统语音增强算法进行语音可懂度增强性能比较.客观评价和主观听力实验结果均表明,所提出的方法能有效提高含噪耳语音的听觉可懂度;相比谱减法和log-MMSE方法在低信噪比时无法提高语音可懂度,该方法在低信噪比时仍可有效提高含噪耳语音的听觉可懂度.此外,含噪耳语音通过所提出的方法进行增强后,其可懂度比未增强时明显提高.  相似文献