高黎贡山区域云南特有少数民族传统体育的保护与传承

运用文献资料、实地考察、访谈等研究方法,对高黎贡山区域云南特有少数民族传统体育文化进行了研究。探讨对其进行文化保护、传承的基本价值原则、文化重心及注重保护与传承过程中注重对文化的甄选,并提出了相应的保护与传承的策略。     

中国风险投资偏好的演化过程研究

1998年至今,风险投资在中国已经发展了近15年。15年来风险投资偏好是否有变化?其演化过程是怎样的?未来的发展趋势又应怎样?本文通过选取6个投资偏好变量,分析15年的风险投资偏好数据,梳理出投资偏好的演变过程,并归纳出风险投资在中国的3个发展阶段,进而对未来中国风险投资业发展提出建议。     

Establishing the Test–Retest Reliability & Concurrent Validity for the Repeat Ice Skating Test (RIST) in Adolescent Male Ice Hockey Players

In this study the authors examine the test–retest reliability and concurrent validity of the Repeat Ice Skating Test (RIST). This was an on-ice field anaerobic test that measured average peak power and was validated with 3 anaerobic lab tests: (a) vertical jump, (b) the Margaria–Kalamen stair test, and (c) the Wingate Anaerobic Test. The participants (n?=?14) were 11- to 12-year-old males selected from a Peewee “A” level ice hockey team (Thunder Bay, Canada). The results of the test–retest reliability estimation showed that the RIST was a reliable test at measuring average peak power in watts (R = .99, C.I._95% = 0.97 to 0.99) and watts per kilogram (R = .98, C.I._95% = 0.94 to 0.99). The RIST was also a valid test when correlated with the 3 anaerobic lab tests for measuring peak power in watts: vertical jump (r = .86, C.I._95% = 0.72 to 0.94), Margaria–Kalamen stair test (r = .66, C.I._95% = 0.39 to 0.83) and Wingate Anaerobic Test (r = .86, C.I._95% = 0.72 to 0.93). The test is considered promising because it does not require any specific equipment, and is a sport-specific, on-ice test, that can be administered during a regular ice hockey practice session.     

Does student learning style affect performance on different formats of biomechanics examinations?

Students' learning style preferences have been widely adapted into teaching and learning environments. The purpose of this study was to investigate the relationship between self-reported and assessed learning style preferences (visual, auditory, reading/writing, kinesthetic: VARK) on performance in different types of multiple-choice examinations (T1: text only format and T2: visual format) given in an introductory biomechanics class. Students who enrolled in three biomechanics classes at a state university were recruited to participate in the study. Ninety students (47 males and 43 females) completed a learning style survey and two types of examinations. Results showed that approximately half of the students were assessed and self-reported as kinesthetic for their preferred learning style. There was no significant difference in test performance between students who preferred visual and reading/writing learning styles (self-reported and assessed). These students demonstrated similar learning and comprehension of biomechanical concepts regardless of whether the test material was presented in their preferred sensory mode or not. Interestingly, female students' perceptions of their learning style preference may have a positive effect on the test results when the test is presented in their preferred format.     

可自我实施的农产品交易平稳关系契约研究

龙头企业与农户间的农产品交易本质上属于长期合作关系,双方有效合作的基础是能够为合作双方提供长期有效的激励、降低违约风险的可自我实施契约。在界定农产品交易平稳关系契约的基础上,对在农户存在专用投资、龙头企业具有全部事后谈判力量的情形下,农产品交易最优平稳关系契约的可能形式进行分析,结论表明:最优平稳关系契约形式与双方的贴现因子、双方持续合作的概率、农户的事前和事后保留收益有关;最优的激励计划严格依赖于龙头企业承诺向农户的支付与农户的事前保留效用及事后保留效用之间的对比关系,这种对比关系使农产品交易关系契约的运行效率不再与剩余分配状况相关。     

Relationship of public preferences and behavior in residential outdoor spaces using analytic hierarchy process and principal component analysis—— a case study of Hangzhou City, China

INTRODUCTION Nowadays, as a large number of residential blocks and college campuses are being constructed nationwide in China, improvement in the quality of residential community becomes a rising issue of city policy and urban planning. Layouts of open spaces in residential areas are predicated on their ability to deliver both a mechanism to maintain the viability of citizens’ outdoor lives and a treatment to alleviate the high-density of urban constructions. What kinds of residential o…     

必须统一企业所得税征管制度

为了充分发挥税收的调节作用，保护国内产业的发展，促进经济结构调整，为企业的公平竞争创造条件，必须统一内、外资企业所得税。这是中国经济融入国际经济大发展中的客观需要，是中国企业参与国际竞争的现实要求，也是中国税制建设的必然趋势。     

铬修饰ZrO_2晶体晶粒大小的测定研究

研究了铬修饰的ZrO2晶体的晶相和晶粒大小,以及铬修饰后的ZrO2晶体晶粒尺寸和比表面积间的关系。     

也谈讲授相对论同时的相对性的方法

由于人们对世界认识的相异,相对论的时空特性很难被人理解和接受,虽然很多教科书举了很多虽不适合但很通俗的例子,但没能给出一个真正相对论的时空模型,让人们在头脑中去想象.爱因斯坦的表述是很准确的,包括他关于"火炉”与"姑娘”的著名比喻.笔者试图给出了符合光速不变原理的时空特性中同时相对性的解释.     

播音与主持传播属性辨析

自从主持人节目形态出现以来,人们一直习惯于用"播音主持"来统称广播电视有声语言传播行为,以为播音与主持同属一种有声语言传播形态,甚至不少业界人士也存在这种模糊认识,并对实际工作造成了负面影响。其实,播音与主持是两种不同属性的传播行为,二者在广播电视有声语言传播系统中所起的作用是相互不可替代的。本文试图从理论和实践的层面上进一步厘清播音与主持的界限,以便对实际工作提供帮助和指导。