山区农特产品品牌创建的必要性及特殊性分析

伴随着生活水平的日益提高,人们对于所消费产品的品牌越来越看重,很多企业都已意识到品牌创建的重要性。相比起来,农特产品行业的品牌创建则十分薄弱,尤其是在一些山区。在对品牌涵义进行阐述的基础上,分析了农特产品品牌创建的必要性、特殊性。     

The effect of smartphones and playing video games on decision-making in soccer players: A crossover and randomised study

ABSTRACT

The objective of this study was to analyse the effect of the use of social networks in smartphones or playing video games on the passing decision-making performance in professional soccer athletes. Participants were 25 male professional soccer athletes (mean ± SD: age 23.4 ± 2.8 years). The participants performed three randomised conditions divided into three groups: control (CON), smartphone (SMA), and video game (VID). Before and after each experimental condition, the Stroop Task assessed the level of induced mental fatigue. Then, the athletes performed a simulated soccer match. A CANON® camera recorded the matches for further analysis on passing decision-making performance. A group effect was identified (p < .01) with impairment on passing decision-making performance for the SMA (p = .01, ES = 0.5) and VID (p = .01, ES = 0.5) conditions. We concluded that the use of social networks on smartphones and/or playing video games right before official soccer matches might impair the passing decision-making performance in professional soccer athletes.     

Cross-Cultural Adaptation and Psychometric Properties of the Portuguese Version of the Life Skills Scale for Sport

ABSTRACT

This research adapted the Life Skills Scale for Sport (LSSS) into Portuguese and provided evidence for its construct validity. Study 1 included four translators and five academics who developed a Portuguese version of the LSSS (P-LSSS). During this study, evidence for the content and substantive aspects of construct validity was provided using an expert panel and 25 sports participants. Study 2 included 413 participants that completed the P-LSSS. Within this study, evidence for the structural aspect of construct validity was provided via factor analyses. Study 3 included 134 participants who completed the P-LSSS and a measure of motivation. This study provided evidence for the external aspect of construct validity, with results showing more self-determined motivation had positive relationships with participant’s life skills development. Overall, our findings provided evidence for the construct validity of P-LSSS scores. Researchers and practitioners can use the P-LSSS to assess life skills development within sports participants.     

论高中生物学案的编制策略

学案式教学模式,通过改变学生以前学习的方式,追求教学过程中教和学的交流和互动,培养学生的爱提问题的习惯,让学生积极参与,寻找获得智慧的方法,发挥他们创新的能力,这是一种非常有效的教学模式。本文在参考以往学案教学经验的基础上,探讨了高中生物学学案的编写策略。     

清代北方家族商业出版探究——以山东聊城叶氏家族为中心

清代北方商业出版开始兴起并达到繁盛,其中山东聊城叶氏家族祖孙三代积极参与坊刻举业书的编纂引人注目。叶氏一族从叶葆自行编刻,到其子叶锡麟、其孙叶祺昌与"聊城四大书庄"之一的书业德密切合作,祖孙三代的商业出版活动,贯穿清代乾隆至光绪,内容上集中于试帖诗、律赋作法的讲解,及墨卷选集,为参加科举考试的士子们服务,针对性极强。聊城叶氏一族成为北方坊刻业中家族参与商业出版的重要典型,充分体现了清代山东坊刻业的繁荣与兴盛。聊城叶氏的商业出版活动,对深入了解和研究清代北方坊刻业有重要的启发意义。     

The kinematic differences between off-spin and leg-spin bowling in cricket

Spin bowling is generally coached using a standard technical framework, but this practice has not been based upon a comparative biomechanical analysis of leg-spin and off-spin bowling. This study analysed the three-dimensional (3D) kinematics of 23 off-spin and 20 leg-spin bowlers using a Cortex motion analysis system to identify how aspects of the respective techniques differed. A multivariate ANOVA found that certain data tended to validate some of the stated differences in the coaching literature. Off-spin bowlers had a significantly shorter stride length (p = 0.006) and spin rate (p = 0.001), but a greater release height than leg-spinners (p = 0.007). In addition, a number of other kinematic differences were identified that were not previously documented in coaching literature. These included a larger rear knee flexion (p = 0.007), faster approach speed (p < 0.001), and flexing elbow action during the arm acceleration compared with an extension action used by most of the off-spin bowlers. Off-spin and leg-spin bowlers also deviated from the standard coaching model for the shoulder alignment, front knee angle at release, and forearm mechanics. This study suggests that off-spin and leg-spin are distinct bowling techniques, supporting the development of two different coaching models in spin bowling.     

Perceived health problems in swimmers according to the chemical treatment of water in swimming pools

The objective of this study was to determine which chemical treatment used for disinfecting water in indoor swimming pools had the least impact on users' perceptions of health problems, and which generated the greatest satisfaction with the quality of the water. A survey on satisfaction and perceived health problems was given to 1001 users at 20 indoor swimming pools which used different water treatment methods [chlorine, bromine, ozone, ultraviolet lamps (UV) and salt electrolysis]. The findings suggest that there is a greater probability of perceived health problems, such as eye and skin irritation, respiratory problems and skin dryness, in swimming pools treated with chlorine than in swimming pools using other chemical treatment methods. Pools treated with bromine have similar, although slightly better, results. Other factors, such as age, gender, time of day of use (morning and afternoon) and type of user (competitive and recreational), can also affect the probability of suffering health problems. For all of the above, using combined treatment methods as ozone and UV, or salt electrolysis produces a lower probability of perceived health problems and greater satisfaction.     

对现代化图书馆建设发展的认识与探索

本文从八个方面阐述了对现代化图书馆建设与发展的认识 ,并在图书馆管理方面进行了有益的探索 ,提出了一些新的管理理念     

工科研究生随机过程教学内容的思考

对工科硕士研究生随机过程课程教学内容的更新提出了自己的看法,阐述了随机过程课程在研究生教育中的作用及其重要性,并对课程内容更新的必要性和可行性进行了探讨。     

打造传媒巨舰搏击市场风浪--记湖南省广播电视局党组书记、局长、湖南广播影视集团董事长魏文彬

魏文彬率先提出媒体产业化道路、电视台机制改革、资本运营和文化产业市场化。魏文彬成了“电视湘军”的领头人。他自写的一副对联“变比拼为联合，走出湖南，寻找新对手；由分散到集中，面向世界，冲刺新目标”，是在新世纪进一步打造湖南传媒巨舰的新思路。