Obesity does not reduce maximum acceptable weights of lift

The maximum acceptable weights of lift (MAWL) of obese and non-obese participants were empirically investigated. Three obesity levels were considered: non-obese (18.5 kg/m(2)< or= body mass index (BMI)or= 40 kg/m(2)). Ten male and 10 female participants were recruited for each obesity level. The participants determined their MAWL for 18 different lifting task conditions (six lifting frequencies x three lifting heights). An analysis of variance (ANOVA) was conducted to determine the effects of obesity level, gender, lifting height, lifting frequency and their interactions on MAWL. Overall, the ANOVA results indicated that obesity does not reduce MAWL, and thus, suggested that the existing MAWL data can be used to accommodate both general and obese workers. However, further studies based on the biomechanical and physiological approaches are required to provide more complete understanding of obesity effects on lifting tolerance limits.     

Position USBL/DVL sensor-based navigation filter in the presence of unknown ocean currents

This paper presents a novel approach to the design of globally asymptotically stable (GAS) position and velocity filters for Autonomous Underwater Vehicles (AUVs) based directly on the sensor readings of an Ultra-short Baseline (USBL) acoustic array system and a Doppler Velocity Log (DVL). The proposed methodology is based on an equivalent linear time-varying (LTV) system that fully captures the dynamics of the nonlinear system, allowing for the use of powerful linear system analysis and filtering design tools that yield GAS filter error dynamics. Numerical results using Monte Carlo simulations and comparison to the Bayesian Cramér Rao Bound (BCRB) reveal that the performance of the proposed filter is tight to this theoretical estimation error lower bound. In comparison with other approaches, the present solution achieves the same level of performance of the Extended Kalman Filter (EKF), which does not offer GAS guarantees, and outperforms other classical filtering approaches designed in inertial coordinates instead of the body-fixed coordinate frame.     

Electrifying the Canon: The Impact of Computing on Classical Studies

The article offers a case study of the relationshipbetween current developments in Classical Studies andthe impact of computing and IT. The first sectionsummarises the main features of the Classical Studiesenvironment, especially the deep seated changes whichhave been taking place. These changes are then relatedto specific initiatives in Research, Teaching andLearning. The discussion is framed by a statement ofmicro-criteria for the evaluation of new developmentsand by reference to the macro-climate of debate aboutthe nature of cyberspace, especially the dichotomybetween conceptions of post-modern diversity and ofEnlightenment images of rational structures. It issuggested that these debates mirror those with whichthe discipline itself engages.     

对经典隐马尔可夫模型的经验性改进

文章分析了经典隐马尔可夫模型（Hidden Markov Model,HMM）齐次假设的理论缺陷,以及两种非齐次HMM。语音识别对比实验表明,经验性的惩罚概率法是稳健的、且更有效的补偿方法。实验结果还指出在最优惩罚概率下,经典HMM达到了与非齐次的基于段长分布的HMM（Duration Distribution Based HMM,DDBHMM）几乎相同的识别率,证明了齐次假设并不影响经典HMM在实用中的重要性。文章提出了一种改进Baum－Welch重估算法的初值的经验方法,用于HMM参数的估计,在汉语连续语音识别实验中一致性地降低了音节误识率。     

中国古典建筑设计对于现代城市建筑设计伦理的启示

建筑设计是人类为了满足自身的居住需要而进行的一项创造性活动,通过对现代建筑设计进行的深刻反思,以及分析中国古典建筑的伦理意识以及审美形态等,从宽泛意义上的伦理学角度思考,引出研究中国古典建筑伦理特点的必要性,试图从设计伦理层面来启示现代建筑设计与中国古典文化精神互通的可能性。     

生活的幻想曲——谈古典音乐的视觉概念与视觉推广

人的生活是由各种感触组成的,视觉和听觉是不可缺少的部分,绘画和音乐是这二者的代表,音乐是可以被画出来的,绘画也可以充满节奏韵律感,本文试图通过由古典音乐唱片封套的设计概念的思索,对视觉与听觉信息互相转换进行分析,并试图开发一种突破传统概念的新推广策略,让受众体既能听音乐也能看音乐,最终目的是要使古典音乐更加被普遍的接受,因为它能让生活变的丰富。     

操作权限管理和控制在C＋＋Builder中的设计与实现

操作权限管理与控制是大多数计算机系统中的一个子系统,在保证整个系统正常、安全运行中起着重要的作用,该操作权限管理与控制子系统在作者使用C＋＋Builder开发的多个应用系统中已成功使用,效果很好。     

城市古典商业街区可持续发展研究

从仿古街区的不断改进,到城市古典商业街区的兴起,都是我国都市旅游发展的必然结果．作为商、旅、文结合的特殊角色,城市古典商业街区同时具有丰富的历史文化和繁荣的现代商业,因此极具现实意义．文中在阐述城市古典商业街区基本理论的基础上,以城市辐射和业态影响为落脚点,找寻当前普遍存在的问题;并以苏州平江路为成功案例,探讨其发展模式和发展路径,以期对中国的城市古典商业街区提出富有价值的参考性建议．     

无限维两体量子系统可分态的一个必要充分条件

构造所考虑的量子系统与辅助量子系统张量积空间中的经典态,利用经典态在辅助复合系统的偏迹运算,研究了无限维两体复合量子系统态纠缠的识别问题,得出了无限维两体复合量子系统态可分的一个必要充分条件,推广了Li Nan和Luo Shunlong的有限维复合量子系统的相关结果.对于识别无限维量子态的纠缠或可分是一个补充.     

国标GBZ／T160．45-2OO7方法中1，2-二氯乙烷采样体积修正的可行性研究

进行1,2－二氯乙烷作业环境检测的气相色谱测定方法学研究,通过将填充柱改为毛细管色谱柱得到的1,2－二氯乙烷检出限,远远小于GBZ／T160．45－2007中的给出值,从而推导出修改GBZ／T160．45—2007中规定的1,2－二氯乙烷采样体积的可行性。修改后的试验方法将降低采样和检测成本。