Comparison of athletic movement between elite junior and senior Australian football players

This study compared the athletic movement skill between elite Under-18 (U18) Australian football (AF) and senior Australian Football League (AFL) players. The U18 sample (n = 13; 17.7 ± 0.6 years) were representatives of an elite talent development programme. The AFL players were classified accordingly; Group 1 (1–4 AFL seasons; n = 20; 21.2 ± 1.9 years) and Group 2 (>5 AFL seasons; n = 14; 26.3 ± 2.6 years). Participants performed an athletic movement skill assessment, inclusive of five foundational movements. Each movement was scored across three assessment points using a three-point scale. Total score for each movement (maximum of nine) and overall score (maximum of 63) were used as criteria. Multivariate analysis of variance (MANOVA) was used to test the effect of developmental group (three levels) on the criteria. Receiver operating curves were built to examine the discriminant capability of the overall score. A significant effect of developmental group was noted, with the U18 sample having a lower mean total score for four of the five movements. Overall scores of 49/63 and 50/63 discriminated the elite U18 sample from Group 1 and Group 2, respectively. U18 players may have less developed athletic movement skills when compared to their senior AFL counterparts.     

中国社会转型与体育价值认同的恶性消退

为应对社会转型进程带来的历史挑战,需警惕监管机制欠完善、媒介播报缺公允、经济条件悬差大、闲暇时间取向多元、职业荣耻观待深化、场馆设施流于象征形式等因素对体育价值认同的恶性消退。同时,亦需警惕泛体质健康价值观、泛心志品质价值论、泛生活品质取向论、泛社会意识增进观、泛爱国情感价值论等负面性体育思潮对社会转型进程的恶性消退。     

Determining the influence of the social versus physical context on environmentally responsible behaviour among cycling spectators

The paper explores the relationships between three factors and environmentally responsible behavioural intentions among cycling spectators: place attachment, subculture identification and subjective norms. Two categories of behavioural intentions are presented namely situational (while spectating) and future (before attending similar events). Analysis of covariance is used to test the relationships in a sample of 619 spectators from both road race and mountain bike events. The paper supports previous research highlighting the importance of the social dimension of sport spectating and the link to social norms that drive environmental behaviour. It also adds to existing research on place attachment as a precursor to environmentally responsible behaviour with reference to sport spectating.     

柔性机器人动力学跟踪变阻抗控制

在人与机器人协调的过程中,控制系统不仅要考虑运动轨迹的位置精度,还要考虑人和机器人与环境接触的灵活性和平滑性。针对柔性多关节机器人动力学前馈的方法进行了研究,使得机器人可以快速、准确地移动到指定位置,控制精度高。提出了一种阻抗控制算法,通过调节机器人末端的阻抗来实现机器人的柔顺控制。依靠动力学的控制策略可以通过调整目标阻抗参数使机器人适应环境。通过对算法的有效性进行仿真验证,该算法可以改善大多数柔性串联机器人的运动控制问题,并且不涉及降低性能以适应操作和控制。     

政治认同：新时期大学生思想政治教育的重要任务

分析了当代大学生在政治认同方面的现状和存在的问题,具体表现为政治性问题认识不清、政治认同主体性不够、政治认同价值不稳等。针对这些问题,提出了思想政治教育应承担强化大学生群体政治认同这个重要任务,以及在大学思想政治教育中培育政治认同的路径。     

论事实推定与间接证据证明的关系

文章探讨了事实推定与间接证据证明之间的关系,认为事实推定只不过是对于我们已经掌握的间接证据通过运用推理这种思维工具,将间接证据与案件事实联系起来,使间接证据能够起到证明案件事实某一环节的作用,即事实推定是法官在认证过程中的一种推理活动,事实推定就是一种间接证据证明;并进而说明事实推定不是一种降低了证明标准的间接证据证明,而且并非所有的间接证据证明都是事实推定。     

珠宝鉴定课程教学改革的实践与探索

围绕如何提高教学质量,在明确课程目标、寻求课程特色,优化教学内容、提高鉴定能力,强化教学手段、改善教学条件,重视实践环节、培养实际能力四个方面,对珠宝鉴定课程进行了探索和实践。     

豫北地区猪源致病性大肠杆菌分离与鉴定

从豫北地区发病猪场采得144份仔猪黄、白痢检样，共分离出大肠杆菌63株，经血清学试验鉴定为O2 8株、O139 8株、O101 7株、O138 7株、O20 6株、O60 6株、O95株、O45 3株、O63 3株、O141 2株、O149 2株、O147 1株、O8 1株，另有4株未能定型，以O2，O139，O101，O138，O20，O60，O9等株血清型占优势。对不同分离株进行了药敏试验。本研究结果为豫北地区致病性猪大肠杆菌药物敏感性试验和多价灭活苗的制作提供了基础，对指导规模化养猪场大肠杆菌病综合防治模式的制定，对预防猪大肠杆菌病具有重要意义。     

初中化学物质鉴别题的解答探究

在初中化学学习中,物质鉴别类的题目是考试中的热点与难点。提高学生解决这类题目的能力,对学生化学素养的培养有重要作用。文章从物质鉴别例题出发,为学生提出一些解题思路和技巧,以提升学生的解题速度,培养学生良好的化学推理思维。     

New Insights on Picasso’s Blue Period Painting La famille Soler

The study of La Famille Soler using non-invasive imaging, molecular, structural, and elemental analysis allowed the re-examination of changes of the work. Considered as the earliest of Picasso’s versions of Le déjeuner sur l’herbe by E. Manet, evidence suggests that an underlying landscape painted by Vidal in 1903 also referred to Manet’s masterpiece. On the other hand, new results suggest that the cubist sketch undertaken by Picasso in 1912, prior to the current blue background, could be an uncompleted transformation of Vidal’s landscape into synthetic cubism. Through study the main pigments used in the underlying compositions were successfully identified.