混合径向平均体在积分变换下的性质

As a generalization of RpK, the mixed radial p-th mean bodies Rp(K,L, μ) have many properties similar to RpK. In this paper, some properties of Rp(K,L, μ) such as monotonicity, transform properties under volume-preserving lineartransformations, etc. were studied. By using the polar coordinate formula for volume and Fubini’s theorem, V (Rn(K,L, μ)) =V (L) was obtained.     

培养学生就业能力 深化教育教学改革

“就业是民生之本”。高职院校必须树立以就业为导向的高等职业教育质量观,以培养就业能力为目标,深化教育教学改革,注重市场定位,转变办学模式。不断创新学生工作新机制、新内容,注重学生综合素质的培养。强化全员、全程、全方位就业服务的观念,切实提高学生就业水平。     

阳离子染料－蒙脱石化学修饰电极的电化学性质─—与Nafion膜化学修饰电极的比较

用蒙脱石与Ｎａｆｉｏｎ制备了阳离子染料中性红化学修饰电极（ＣＭＥ）．两种ＣＭＥ在支持电解质溶液中有相似的循环伏安行为．蒙脱石ＣＭＥ的峰电流随膜厚增加而增加，而ＮａｆｉｏｎＣＭＥ的峰电流随膜厚增加有所降低．阳离子染料在蒙脱石膜内的扩散系数比在Ｎａｆｉｏｎ膜中的扩散系数大一个数量级．阴离子电活性物以及不同的制备方法对两种ＣＭＥ的电化学响应有不同的影响．两种ＣＭＥ在性质上的差异反映了两种膜的微结构与通透性等方面的差别．蒙脱石用作制备化学修饰电极的表面层材料有一定吸引力．     

不同锻炼方式对老年人高血压疗效的研究

为了探讨太极拳和慢跑运动对老年人高血压患的治疗效果，本对46名高血压患进行了1年的实验研究，结果表明：太极拳和慢跑对防治老年人高血压症有良好的疗效，且太极拳优于慢跑运动。     

21世纪我国成年人体质监测工作的管理与思考

我国成年人体质监测工作已步入启动阶段,如何根据都市人群的特点,建立有效的成年人体质监测的管理系统,本文对迈入２１世纪我国成年人体质监测工作的管理就其指导思想,组织体系,工作思路,任务目标,工作流程,网络建设等问题进行初步的探析,籍以作为体育行政部门提高监测工作的管理水平,出台相应法规和措施,倡导大众健身氛围,服务于广大市民提供可参考依据     

Joint time-frequency synchronization and channel estimation in two-way relay networks

This work investigates joint time-frequency synchronization and channel estimation in two-way relay networks (TWRN) that utilize amplify-and-forward (AF) relay strategy. A two-way transmission model for joint time-frequency synchronization and channel estimation in TWRN is provided. Due to the high dimension and complexity of the model, the maximum likelihood (ML) algorithm is over complex and a standard Markov chain Monte Carlo (MCMC) algorithm is ineffective. We instead develop a hybrid Metropolis–Hastings–Gibbs algorithm in order to facilitate joint time-frequency recovery and effective channel estimation. In particular, we present a reparameterized model to facilitate Gibbs sampling with respect to the self-interference channel. Then the second order truncated Taylor series approximation is adopted for carrier frequency offsets (CFOs) estimation. Furthermore, a heuristic way of determining update order of parameters is proposed and initial value of the Markov chain is discussed as well. To test the robustness and objectivity of our proposed algorithm, two MCMC estimators, each with its own prior distribution, are compared against each other. Numerical results are provided to verify the effectiveness and robustness of proposed algorithm in terms of both mean-square errors (MSE) and estimation bias. The bit error rate (BER) performance results are further offered for comparison.     

情境教学在环境生态课程中的运用

本文分别介绍了环境生态课程模式和情境教学 ,探讨了情境教学在环境生态课程实施中的运用 ,通过教学实例揭示特殊教育课程与教学在教学实践中的动态统一关系 ,指出情境教学可以作为环境生态课程教学中的有效教学方法。     

深圳红树林区珠带拟蟹守螺的种群生态研究

对深圳福田红树林区珠带拟蟹守螺的种群生态进行了逐月调查研究,结果表明:珠带拟蟹守螺的种群总体格局是聚集分布的,这是种群的内禀属性。运用模糊聚类分析方法可将其在不同月份的聚集强度分为4种类型。空间格局的聚集强度变化与成螺的繁殖、幼螺的出现及生长过程中的迁移有关。种群的死亡过程和繁殖过程使种群平均密度有较明显的波动,但对种群总体水平无明显影响,种群结构也无明显变化。     

山东省高等体育院校武术教学现状与对策研究

本文采用文献资料法、问卷调查法、数理统计法、逻辑分析法等,通过实地考察,发放问卷等研究方法,对山东省高等体育院校武术的师资、武德、武术课程的安排和教学进行考察和分析,探明了制约山东省高等体育院校武术课发展的诸多问题,并就此提出了解决对策。     

AN INTERACTIVE METHOD FOR THE MULTIOBJECTIVE DECISION BASED ON THE WEIGHTED TCHEBYCHEFF NORM

ＡＮＩＮＴＥＲＡＣＴＩＶＥＭＥＴＨＯＤＦＯＲＴＨＥＭＵＬＴＩＯＢＪＥＣＴＩＶＥＤＥＣＩＳＩＯＮＢＡＳＥＤＯＮＴＨＥＷＥＩＧＨＴＥＤＴＣＨＥＢＹＣＨＥＦＦＮＯＲＭＳｈｅｎＨｏｕｃａｉ（沈厚才）；ＺｈｏｎｇＷｅｉｊｕｎ（仲伟俊）；ＸｕＮａｎｒｏｎｇ（徐南...