词汇衔接与大学英语语篇教学

词汇衔接是一种非结构性衔接手段,是实现语篇连贯的多种衔接机制之一。本文讨论词汇衔接在语篇连贯中的作用、词汇衔接和语篇连贯的关系,并提出了如何在大学英语语篇教学中运用词汇衔接理论的策略。     

关于小诗和四行体－－《麦芒四行体诗两百首》序

精短化是诗歌发展的总趋势，小诗的界定，理论综述及创伤成就，麦芒四行体诗的成功与不足。     

湖南桃江县三堂街方言名词词缀“的”

普通话中的名词词缀"子"以及湘方言中较有特色的"子"尾词,在桃江方言中读作"的",且存在明显的对应关系。三堂街镇作为桃江县江北地区的贸易中心,较好的代表了周边乡镇的语言面貌,所以我们选取三堂街镇方言作为代表点,在丰富的语言材料基础上,对三堂街方言名词词缀"的"的词汇分布情况、声韵结合情况及语法构成形式做出了深入细致的描写,并补充"的"缀其他存在形式,全面展示了三堂街方言中"的"缀的独特风貌。     

电工电子技术课程教学模式改革与学生能力培养

电子课程是中等职业学校电类及相关各专业必修的技术基础课,本文对电工电子技术课程教学模式进行了研究,从中职教育的培养目标和中职学生的特点出发,分析了传统电工电子教学中存在的问题,并在此基础上提出了几点改革思路和想法。探讨理论教学和实践环节如何做到有机结合。旨在为提高教学质量作一些有益的尝试和探索,培养出有文化、懂技术的技能应用型人才,这是近年来国内外教育界强调素质培养、加强教学改革建设主旋律中的一个新亮点。     

A comparison of methods to determine maximal accumulated oxygen deficit in running

Abstract

The aim of this study was to compare maximal accumulated oxygen deficit (hereafter O₂ deficit) estimated from the methods of Whipp et al. (1986 Whipp, B. J., Ward, S. A. and Wasserman, K. 1986. Respiratory markers of the anaerobic threshold. Advances in Cardiology, 35: 47–64. [Crossref], [PubMed] , [Google Scholar]), Medbo et al. (1988 Medbo, J. I., Mohn, A. C., Tabata, I., Bahr, R., Vaage, O. and Sejersted, O. M. 1988. Anaerobic capacity determined by maximal accumulated O₂ deficit. Journal of Applied Physiology, 64: 50–60. [PubMed], [Web of Science ®] , [Google Scholar]), and Hill et al. (1998 Hill, D. W., Ferguson, C. S. and Ehler, K. L. 1998. An alternative method to determine maximal accumulated O₂ deficit in runners. European Journal of Applied Physiology, 79: 114–117. [Crossref], [Web of Science ®] , [Google Scholar]) to determine whether they agree sufficiently to be used interchangeably. Nineteen moderately to highly trained endurance runners first performed an incremental test to exhaustion for the determination of maximal oxygen uptake ([Vdot]O_2max) and peak treadmill speed, followed by six randomly ordered constant-speed tests at 95, 100, 105, 110, 110, and 120% of peak treadmill speed. All tests were separated by at least 72 h and were performed within 4 weeks. The method of Whipp produced an O₂ deficit estimate that was lower than that derived from the method of Hill or Medbo (bias ± 95% limits of agreement: ?29.6 ± 36.6 and ?26.1 ± 32.8 ml · kg^?1, respectively; P < 0.001). The O₂ deficit did not differ between the methods of Hill and Medbo (bias ± 95% limits of agreement: 3.5 ± 41.6 ml · kg^?1; n.s.). However, poor correlations (0.21 < r < 0.33; n.s.) together with wide limits of agreement between O₂ deficit estimates (70 – 80% of the mean response) clearly question using these methods interchangeably.     

Physiological Profiles of High School Female Cross Country Runners

Abstract

Percent body fat, ratings of perceived exertion and maximal oxygen consumption during a continuous running treadmill test were obtained on 127 high school female cross country runners. These young runners (x 15.6 yrs) were running approximately 25 miles per week at the time of testing. They had an average [Vdot]O₂ max of 50.8 ml · min^-1 and an HR max of 198.0 bpm. The mean percent body fat, as determined from hydrostatic weighing, was 15.4%. The onset of metabolic acidosis was estimated to occur at 78% of [Vdot]O₂ max. A stepwise multiple regression with the 3000 meter run as the dependent variable indicated that max treadmill run time, weight relative [Vdot]O₂ max and [Vdot] max entered the equation in that order, yielding an R of 0.67. Both HR and RPE increased with work intensity, but not at equal rates. These high school female runners had higher [Vdot]O₂ max's than previously reported for this age group; however, they were considerably below these values reported for national caliber distance runners.     

A Reliable Method for the Measurement of Constant Load Maximal Endurance Performance on the Bicycle Ergometer

Abstract

The purpose of this study was to examine the relationships of achievement goal orientations and perceived motivational climate to perceptions of the intensity and direction of competitive state anxiety in a sample of university athletes representing various team sports. Although some studies have demonstrated that task orientation and mastery climate are associated with adaptive emotional patterns and ego orientation and performance climate are linked to less adaptive emotions, others have not verified these findings. In the present study, structural equation modeling was used to test these links. The results showed that perceptions of a performance climate were associated with ego orientation, whereas perceptions of a mastery climate were linked to task orientation. Furthermore, no significant links were found between task orientation and direction of competitive anxiety, while it was shown that the impact of ego orientation on the intensity and direction of cognitive and somatic anxiety was exerted through self-confidence. No significant direct links were found between motivational climates and competitive anxiety, thus implying that motivational climates may have an indirect impact on affective responses through the different goal orientations. The findings of the present study are discussed along with suggestions for examining situational and individual difference variables that may explain the relationships between intensity and direction of competitive anxiety and achievement goals and motivational climates.     

酸性离子液体[HNMP][HSO_4]催化潲水油制备生物柴油的研究

制备了酸性离子液体[HNMP][HSO4],用于催化潲水油制备生物柴油,并研究了实验过程中的反应时间、反应温度、醇油摩尔比、剂油摩尔比等因素对酯交换反应转化率的影响,确定了较适宜的反应条件。结果表明:在反应时间为4h,反应温度为140℃,醇油摩尔比为11,剂油摩尔比为0.08条件下,酯交换反应转化率为90.28%。     

科教融合:高等教育理念的变革与创新

科教融合是一种尽管经受各种挑战仍顽强延续下来的大学理念。从洪堡的柏林大学到吉尔曼的约翰.霍普金斯大学,再到当代研究型大学,有一个理念始终贯穿其间:始则若隐若现,继而渐明渐亮,最终由应然走向必然,行将成为世界高等教育变革与转型的主旋律,这就是科教融合的理念。科学研究与教学协同创新培养人才是中国高等教育必须面对和解决的一个重要的理论问题和实践问题。从科教分离到科教融合是中国高等教育哲学的重大转变,是实现中国高等教育转型、提高高等教育质量、提升高校创新能力和建设高等教育强国的现实选择。     

《暗算》叙述方式的解读

《暗算》在英雄主题、叙述策略、语言的组织上,都对当下军旅文学的审美视野进行了挑战。英雄的私语化描述,饱含情绪的主观化叙述,正奇语言的混杂,都给读者带来了新的审美感受。为此《暗算》也带来了迎合世俗文化消费的质疑,但新的叙述方式为军旅文学创作模式的多元化提供了借鉴和思索。