贵州省全民健身场地设施现状与需求研究

文章采用了文献资料法、问卷调查法、数理统计法,通过对贵州省全民健身场地设施现状的调查,了解全民健身场地设施的现实状况,及人们对体育健身的需求状况;发现健身场地设施较少且损坏严重,人们的健身需求未得到充分满足,部分场地设施与人们健身需求不一致,造成资源浪费等问题,为贵州全民健身的发展提供一定的参考.     

佛山市健身俱乐部经营现状的调查分析

通过对佛山市经营性健身俱乐部进行调查,分析目前影响佛山市健身俱乐部经营现状的管理、消费、教学、环境等因素,并对佛山市健身俱乐部经营的可持续发展提出积极性建议。     

A new implementation of image-processing engine for 3D visualization and stereo video stream display

This paper presents a new implementation of a high-definition image-processing engine,which mainly targets the 3-dimensional(3D)visualization and stereo video stream display of binocular display equipment.The engine is compatible with the mainstream analog and digital stereo videos in component format and is able to receive stereo composite video broadcast signals using an integrated analog stereo video decoder.The four modules include a spatiotemporal scaling transform engine,a 2D–3D converter,an image animating engine,and a 2D scalar operating in pipeline architecture to implement the video format conversion and the stereo effect enhancement.Furthermore,the data access,hardware structure,and system-level configurations are optimized.Finally,the proposed architecture is realized by 0.18 lm CMOS technology.The application-specific integrated circuit verification results show that the engine can generate a strong feeling of 3D immersion and highdefinition image quality with minimal flicker.The chip has wide compatibility and an uppermost 1080P-processing capacity,which has approximately 3.5 million gates with about 43 mm2 die size.     

全民健身契机下武术发展初探

本文运用文献资料法、专家访谈法、逻辑分析法等研究方法，从传统武术的师徒传承特点与学校体育武术教学的优势对比。以及健身武术在全民健身中的作用等方面综合分析，可以得到当今社会武术的发展模式的最高境界应该是是简单易行，适应大众，动作难度适中，竞赛规则适合，欣赏性较高，人人参与的全民健身发展模式。     

An efficient non-iterative algorithm to estimate the apparent diffusion coefficient of water molecules in the magnetic resonance diffusion imaging experiments

Many studies have shown that the magnetic resonance signal decay with an extend range of diffusion weighting(b-factor)is a bi-exponential attenuation in the diffusion-weighted magnetic resonance imaging experiments in vivo.Based on this feature and the two-compartmental model,we propose a twice-linear-fitting(TLF)algorithm to estimate the apparent diffusion coefficient(ADC)of the water molecules instead of the commonly used iterative Levenberg–Marquardt(LM)method.The TLF algorithm consists of two liner fitting steps to estimate the fast and the slow apparent diffusion coefficients and their sizes,respectively.It is unnecessary to guess the initial values in the whole fitting process.The time consumption of the TLF algorithm is much less than that of the iterative LM method.Moreover,the TLF algorithm may avoid the extraneous solutions,which often deteriorates the results of the LM method.Compared with the iterative fitting method,the TLF algorithm is a reliable and timeefficient approach to estimate the ADC of water molecules in vivo in magnetic resonance diffusion-weighted imaging experiments.     

Synthesis of mesoporous polymeric carbon nitride exhibiting enhanced and durable visible light photocatalytic performance

A thiourea precursor was employed to synthesize mesoporous carbon nitride(C3 N4) by a thermal polycondensation process with high surface area SiO2 and nanosphere SiO2 as two types of hard templates. The resultant mesoporous C3 N4 samples have high surface areas(105–112 m2/g) and mesopores with narrow sizes distribution(9.3 nm). Photocatalytic performance was evaluated by removal of NO in air under visible light irradiation. The results showed that mesoporous C3 N4 samples exhibited significantly improved photocatalytic activity in comparison with bulk C3 N4, which also exceeded that of N-doped TiO2 and C-doped TiO2. The activity enhancement can be ascribed to the synergistic effects of large surface area and pore volume, enhanced light-harvesting ability, increased redox potential, and reduced recombination of charge carriers. In addition to the high activity, the mesoporous C3 N4 samples also showed high photochemical stability. The mesoporous C3 N4 photocatalysts with enhanced and durable activity could provide a new efficient material for environmental pollution control.     

Genome editing and animal models

Transgenic technology allows a gene of interest to be introduced into the genome of a laboratory animal, and provides an extremely powerful tool to dissect the molecular mechanisms of disease. Transgenic mouse models made by microinjection of DNA into zygotic pro- nuclei in particular have been widely used by the genetics community for 30 years. However, it remains a rather crude approach： injected sequences randomly insert in multiple copies as concatamers, they can be mutagenic, and they have variable or silenced expression depending on the site of integration, a phenomenon called position effects. As a result, multiple lines are required in order to confirm appropriate transgene expression. This can be partially overcome by flanking transgenes with insulator sequences to protect the transgene from the influence of the sur- rounding regulatory elements. Large （〈300 kb） BAC- based transgenic vectors have also been shown to be more resistant to position effects. However, animals carrying extra copies of fairly large regions of the genome could have unpredictable phenotypes. The most effective method used to control for position effects is to target transgene insertion to specific genomic loci, the so-called targeted transgenesis; for instance, the fast, site-specific transgenic technology TargattTM. The purpose of this review is to provide an overview on the current existing methods for making targeted transgenic mouse models.     

浅析网球运动与全民健身

文章通过对我国网球历史、现状及发展趋势的解说,分析了当前我国网球运动的发展态势;通过对全民健身概念的解读,说明我国全民健身的必要性,从中找出网球运动与全民健身有机结合的契入点,并列举网球运动的种种功能,更有力地说明网球运动在我国达到大众化的可行性及长期性。     

建康“走班”

平日繁忙的工作让健身成为了“不可能的任务”，而“11路”这种最原始、最古老的通勤方式，更是被快节奏的现代人完全抛在脑后。但其实“11路”“走班”方式既能妥善利用上下班的时间，又能收获不错的健身效果，实在是“健康、环保、经济”的典范。     

开封市中小学教师体育锻炼现状的调查与分析

通过问卷调查法、访谈法,对开封市中小学教师的体育健身锻炼活动现状调查表明：开封市中小学教师对体育健身锻炼作用的主观认识比较充分,但参加体育健身锻炼的次数少、时间不足,导致此结果的主要因素是工作忙没时间,家务繁多等,开封市各中小学应该重视本校体育运动的开展,使更多的教师投入到全民建设中来。