天津市体育教练员人才资源现状及开发对策研究

主要采用问卷调查法,从性格特征、学习能力、专业能力和工作绩效等4个方面对天津市体育教练员人才资源现状及开发管理问题进行探讨与研究.在人才的选拔、加强培训、促进学习、强化专业态度以及职业精神、引入绩效管理等方面提出了可供参考的对策建议.     

Light-load maximal lifting velocity full squat training program improves important physical and skill characteristics in futsal players

This study aimed to compare the effect of 6 weeks of resistance training or combined resistance training and change of direction exercises on physical performance and motor skills in futsal players. Thirty-four futsal players were divided into full squat group (SG, n = 12), combined full squat and change of direction exercises group (S+CDG, n = 12) and control group (CG, n = 10). The resistance training for SG consisted of full squat with low load (~45–58% 1RM) and low volume (4–6 repetitions), whereas the S+CDG performed the same resistance training program combined with loaded change of direction. Sprint time in 10 and 20 m, change of direction test, countermovement vertical jump (CMJ) height, maximal strength and force–velocity relationship in full squat exercise, kicking speed ball (BS_mean) and repeated sprint ability (RSA_mean) were selected as testing variables. Both experimental groups showed significant improvements for CMJ, BS_mean and all strength parameters. Only SG resulted in significant sprint gains, whereas S+CDG also achieved significant improvements in RSA_mean. The CG remained unchanged after training period. No significant differences were found between both experimental groups. These findings suggest that only 12 sessions of either lightweight resistance training alone, lifting the load at maximal intended velocity or combined with change of direction exercises is enough to improve several physical and skills capacities critical to futsal performance in adult players.     

Resting Bradycardia,Enhanced Postexercise Heart Rate Recovery and Cardiorespiratory Fitness in Recreational Ballroom Dancers

Purpose: In a cross-sectional study design, we evaluated the resting heart rate (HR_baseline) and exercise and postexercise stress test-related chronotropic responses in male practitioners of recreational ballroom dancing (BD; n = 25, M_age = 26.6 ± 6.1 years) compared to a control group of insufficiently active nondancers (CG; n = 25, M_age = 25.9 ± 4.5 years). Method: All participants underwent a submaximal exercise test. At 85% of the maximal predicted HR, the recovery protocol was started, and heart rate recovery (HRR) was recorded during 1-min intervals for 5 min. Results: Compared with CG, BD showed lower HR_baseline (70 beats per minute [bpm] vs. 62 bpm, respectively, U = 143, p < .05, ES = .46), lower preexercise HR (94 bpm vs. 86 bpm, U = 157, p < .05, ES = .42), longer exercise test duration (346 s vs. 420 s, U = 95.5, p < .05, ES = .59), and higher HRR for 5 min postexercise (U = 1.29–1.89, p < .05, ES = .33–.50) as follows: 1st min (32 bpm vs. 40 bpm), 2nd min (45 bpm vs. 53 bpm), 3rd min (51 bpm vs. 58 bpm), 4th min (55 bpm vs. 59 bpm), and 5th min (59 bpm vs. 63 bpm). The coefficient of HRR from the 1st min to the 5th min postexercise was similar in both groups (U = 229–311, p > .05, ES = < .10–.22). Conclusion: Heightened cardiovascular functional status characterized by favorable enhanced chronotropic dynamics appears to occur in practitioners of recreational ballroom dancing, which suggests that this modality of exercise may result in health benefits.     

云南省保山地区降水年内分配的区域差异研究

利用保山地区腾冲县、龙陵县、保山市气象站的降水资料,从降水年内分配的不均匀性、集中性等方面比较了高黎贡山两侧降水的区域特征。得出以下结论：在西南季风大气候条件控制下,受高黎贡山＂通道-阻隔＂及自身地形的影响,龙陵、腾冲、保山3地的降水年内分配特征表现出明显的地域差异。3个地区中受西南季风影响剧烈程度由高到低依次为：龙陵、腾冲、保山;从各地不同时期降水不均匀性的变化来看,保山具有龙陵、腾冲两地的综合特征,又有自身的特点。各时期3地降水集中期变化不大,龙陵、腾冲主要集中在7月下旬,而保山相比则要滞后一段时间,说明保山受西南季风影响比龙陵和腾冲迟,受到的影响相对较小。     

宽带薪酬的适用性分析

宽带薪酬作为一种新型的薪酬模式备受国内企业关注。在阐明宽带薪酬内涵及其现实意义的基础上,对宽带薪酬模式的适用性进行了分析,指出扁平化的组织结构、科学的绩效考核体系、强调公平的企业文化以及完善的激励机制是企业实施宽带薪酬所应具备的基本条件。     

私营企业框架下的中国家族企业发展状况分析

家族制管理是非公有制企业较多采取的一种管理模式,中国90%以上私营企业是家族式经营管理。在我国私营企业的发展框架下,对当前我国家族企业的发展状况进行了探讨,并以此为背景揭示了现阶段我国家族企业发展所呈现出的基本问题。     

无机化学课程目标与课程建设的新发展

文章对无机化学课程目标及课程建设进行研究,包括无机化学教学内容体系、教学内容组织方式、实践性教学思想设计和教材建设等方面,真正体现无机化学课程的时代性、实践性、探索性、综合性、人文性和个别性。     

基于信息使用环境理论的引用行为研究:参考文献分析的视角

目前,学术界多开展引用动机和引文功能的相关研究,但对于引用偏好等引用行为却关注较少。基于Taylor的信息使用环境理论,本研究采用参考文献分析方法,全面揭示了施引者引用行为的特征和影响因素。研究将信息使用环境理论中的前三类要素分别通过学者特征、组织环境及论题进行定义,采用参考文献分析法提取第四类要素;随机抽取论文样本,针对上述四类特征进行编码并通过统计分析探讨影响施引者引用行为的因素。研究发现:学者的年龄、性别、教育水平、学术年龄、职业角色、职称、所属机构的类型和层次以及所从事的研究主题和类型,都能对质量、语种、数量、信息资源类型、论文新旧的引用偏好产生显著影响。研究表明:信息使用环境理论和参考文献分析法在引用行为研究中具有适用性。表4。参考文献47。     

Trajectories of Adjustment in a Brazilian Sample of Street-Involved Youth

Trajectories of adjustment were examined in a sample of street-involved youth across a 1-year period. Participants (N = 113; M_age = 14.18 years; 80.5% male, 91% non-White) were recruited in three Brazilian cities. Interviews conducted at three time points included six measures of physical and psychological adjustment. Unconditional growth models revealed linear declines over time (i.e., improved adjustment) on three indicators: health symptoms, sexual risk behaviors, and negative affect. There were no linear changes in drug use, positive affect, or life satisfaction. Conditional growth models revealed few significant effects for age or gender, but ratings of stressful life events moderated longitudinal changes in health symptoms, drug use, and negative affect. Implications for practice, policy, and theory are discussed.     

运动处方教学对听障学生心理健康的影响

采用心理健康诊断测验(MHT)、心境状态量表(POMS)和自制的问卷调查表,对听障学生的心理特点进行测量和评定;有针对性地为他们设计了运动处方,并组织了教学实验.实验对象分为实验组和对照组,实验组采用运动处方教学,对照组采用常规教学.结果表明:运动处方教学对听障学生的身心健康有一定的积极影响;听障学生心理素质的发展效果与教材内容和教学方法有关;只有将学生的心理体验与学生的技能练习有机结合,才能收到既掌握运动技能又发展心理品质的效果.