竞技体育运动训练机能监控预警系统的研究与应用

运用计算机与数据库技术,根据竞技体育运动训练机能监控的需求,构建竞技体育运动训练机能监控预警系统。该系统主要包括运动员基本信息管理、训练计划与测试方案、测试数据录入与查询、机能评定与监控预警,通过该系统实现对运动员运动训练机能监控预警。     

用于运动监护的心电模拟前端的设计

运动状态下,心脏的负荷增大,冠心病、心肌缺血等症状更容易在心电信号中表现出来,所以运动状态下测得的心电信号更能反映心脏的健康状况。设计了一种特殊结构的心电模拟前端,具有很高的输入阻抗(100 G||3pF)和极小的输入偏置电流(70 pA),在不使用贴片电极和导电膏的条件下,实现运动过程中的心电信号采集。该模拟前端能够有效抑制射频干扰、工频干扰和肌电干扰,保证心电信号的质量。采集到的心电数据经蓝牙无线传输到智能手机上,实现心电波形的分析与显示。实验结果表明,该模拟前端具备体积小、佩戴方便、低功耗等优点,与智能手机结合方便地实现运动心电监护的功能。     

Assessing nutritional quality of milk-based sport supplements as determined by furosine

Milk proteins have a strong position in the sport nutrition markets, such as sport supplements for highly trained athletes, apart from bodybuilders. Furosine, a well-known index for the availability of lysine and subsequently of the extent of the Maillard reaction, was evaluated in different common ingredients used for formulation, as well in commercial sport supplements. Furosine content ranged from 2.8 to 1125.7 mg/100 g protein in commercial sport supplements being usually lower in samples containing mainly whey protein isolates or casein, as compared with whey protein concentrates. It is estimated that 0.1–36.7% of the lysine content is not available in this type of products. The use of high quality ingredients for the manufacture of sport supplements reveals important, since it could be the major source of protein intake of certain group of consumers in high or moderate training regime. Furosine is an appropriate indicator to estimate the nutritional quality of sport supplements. A reference value of 70 mg furosine/100 g protein content in dried sport supplements could be set up for controlling the quality of milk-based ingredients used in the formulation. Samples with higher levels are suspected of use of low quality milk-based ingredients or inappropriate storage conditions.     

The relationship between the travelling speed and motorcycle styles in urban settings: A case study in Belgrade

This report examines the difference in the distribution of the speeds of different motorcycle styles and the difference in the distribution of speeds of particular motorcycle styles and cars. The relationship between the speed of motorcycles that possess and those that do not possess vehicle registration plates was also explored. The speed was measured at six different locations on main roads in the city of Belgrade, Serbia. The study confirmed that, on average, motorcyclists drive faster than drivers of cars, but extreme speeding is recorded 2.3 times more often by motorcyclists than by car drivers. In this research, the styles of motorcycles were divided into three different groups according to their average speeds. The first group consists of sport motorcycles, which were faster than the other styles. The second group consists of scooter motorcycles, which were slower. The third group consists of conventional, touring, enduro, and chopper motorcycles with speeds that were statistically not significantly different. According to the differences of the mean speed of motorcyclists who use and do not use vehicle registration plates, the use of the registration plates can be considered a significant indicator of traffic safety. By classifying motorcycles in the three different groups, the issue of “generalizing” motorcyclists as a unique group is avoided and can be taken into consideration for future studies of motorcyclist safety.     

不同的赛事,不同的设计——北京奥林匹克公园网球中心赛后运营设计回顾

随着北京奥运场馆和各地体育中心的大规模兴建,关于体育场馆运营设计问题的讨论日渐升温.本文通过回顾奥林匹克公园网球中心赛时、赛后设计和改建的工作实践,对其运营设计的出发点及思路进行了梳理、总结,以期为建筑师进行相关设计实践提供参考.     

Formula One’s new urban economies

The Formula One (F1) industry has become a true microcosm of the world economy, as new business opportunities surface in emerging countries. Until the beginning of the twenty-first century, this sport was mostly relevant to traditional western urban elites, but since then, the F1 calendar has been largely altered to the benefit of ‘dominant-emerging cities’ and to the detriment of more traditional destinations. This article focuses on this urban question through a historical analysis of the F1 circuit’s expansion phases as well as through a study of the current Grand Prix’s estimate sanction fee.     

Practices @ Home: Assimilating the Past and the Present for a Visionary Architecture

Guest-Editor Mehran Gharleghi describes the work of four Iranian practices - Fluid Motion Architects (FMA), Pouya Khazaeli Parsa, Arsh Design Studio and Kourosh Rafiey/Asar Consultant Engineers' Co) - that are worthy of international attention. Over the last decade, all have distinguished themselves by developing a body of work ‘that is not only globally informed but also conscious and proud of its local, regional and national identity’.