Effects of the shape and size of a mooring line surface buoy on the mooring load of wave energy converters

This paper describes the physical model testing of a wave energy converter (WEC) undertaken in the Henot-watt wave basin during October 2010 as part of the SUPERGEN2 project funded by the British gover...     

医院建筑节能改造评估分析

目前,建筑行业在国内发展迅速,建筑节能已成为节约能源的一种有效方式。医院作为大型公共建筑的一种,其建设发展迅猛,医院的医疗成本不断提高,运行的能耗也日趋增加,因此,降低医院的能耗已成为一种有效的节能措施。现以某综合医院为研究对象,分析了医院建筑能耗情况及在用能方面存在的问题,并从建筑的照明系统、用电系统、采暖系统等方面进行节能改造,提出改造措施,计算出单位建筑面积能耗减少量,和相当减少CO2排放量,达到建筑节能的效果。     

绿色化学理念在木材化学及其实验教学中的应用

随着工业化程度不断提高,环境和能源问题日益严峻。木材化学课程应将绿色化学理念贯彻于理论和实验教学中,可以采取具体措施：在木材化学理论教学中引入木材主要组分的分离和化学反应的绿色方法,试剂,做到资源的高效绿色高值化利用;在木材化学实验中利用多媒体辅助教学;提倡半微量化操作模式,对部分实验进行微型化改进;增设教学模块,改革实验内容,创新设计综合实验。通过这一系列措施在木材化学教学中引入并强化绿色化学理念,使学生在以后的工作中运用该理念,做到绿色环保、节能减排。     

双层玻璃幕墙建筑夏季热特性试验研究(英文)

通过对南京地区某双层玻璃幕墙建筑在夏季白天不同运行模式下的表皮各层和室内温度分布对比实测,分析该建筑的热特性.结果表明:在9.5 h内,房间B在外层通风口打开、内层表皮紧闭、中间遮阳完全启用的情形下,空调系统能耗比房间A在内外层表皮均完全紧闭、无遮阳设施情形下减少21.0%.玻璃幕墙各层表皮和室内各状态点的温度沿水平和垂直方向的分布规律均受到遮阳状态的显著影响.中间遮阳设施的启用有助于强化热通道的烟囱效应.相较于房间A,房间B的温度分布更加均匀.但在所有的测试工况下,双层玻璃幕墙热通道的过热问题始终存在.     

关于开发思想政治教育正能量的战略思考

开发思想政治教育的正能量是当前思想政治教育工作的新任务。开发思想政治教育正能量在很大程度上体现了以人为本的基本要求,注重对受教育者的意志锻炼和情感培养。启发教育者在教育的过程中要结合受教育者个性特点,采取多种手段激励其不断向上,最终促进教育和受教育的负能量向正能量的共同转换。     

校内考试与课程标准的一致性研究——韦伯模式在中学地理校内考试试卷分析中的应用探究

借鉴韦伯模式对浙江省金华市某省级重点中学2012年度第二学期高中一年级地理学科期中试卷进行一致性分析,发现当前校内考试主要存在以下问题:教师课程标准的意识不强;校内考试重视知识和技能、轻视方法和情感态度价值观;校内考试追求最高标准的达成等。应采取增强教师的课程标准意识、提高教师"基于标准"的命题水平、建立校内考试与课程标准一致性评价制度、修订和完善现行课程标准等措施加以解决。     

Improvement of enamel bond strengths for conventional and resin-modified glass ionomers: acid-etching vs. conditioning

Objective:This study deals with the effect of phosphoric acid etching and conditioning on enamel micro-tensile bond strengths(μTBSs)of conventional and resin-modified glass ionomer cements(GICs/RMGICs).Methods:Forty-eight bovine incisors were prepared into rectangular blocks.Highly-polished labial enamel surfaces were either acid-etched,conditioned with liquids of cements,or not further treated(control).Subsequently,two matching pre-treated enamel surfaces were cemented together with one of four cements[two GICs:Fuji I(GC),Ketac Cem Easymix(3M ESPE);two RMGICs:Fuji Plus(GC),RelyX Luting(3M ESPE)]in preparation forμTBS tests.Pre-treated enamel surfaces and cement-enamel interfaces were analyzed by scanning electron microscopy(SEM).Results:Phosphoric acid etching significantly increased the enamelμTBS of GICs/RMGICs.Conditioning with the liquids of the cements produced significantly weaker or equivalent enamelμTBS compared to the control.Regardless of etching,RMGICs yielded stronger enamelμTBS than GICs.A visible hybrid layer was found at certain enamelcement interfaces of the etched enamels.Conclusions:Phosphoric acid etching significantly increased the enamelμTBSs of GICs/RMGICs.Phosphoric acid etching should be recommended to etch the enamel margins before the cementation of the prostheses such as inlays and onlays,using GICs/RMGICs to improve the bond strengths.RMGICs provided stronger enamel bond strength than GICs and conditioning did not increase enamel bond strength.     

Clients’ Expected Number of Counseling Sessions,Treatment Effectiveness,and Termination Status: Using Empirical Evidence to Inform Session Limit Policies

Many counseling centers have session limits to accommodate the increasing number of clients who seek treatment. The current study explored clients' expectations for the number of sessions over the course of one year at a large university counseling center. In contrast to previous research that has suggested clients want ten or fewer sessions, our results suggest that over 60% of clients wanted 20 or more sessions. Moreover, clients who expected 20 or more sessions reported therapy was less effective than clients who expected less than 20 sessions. While actual number of sessions was related to expected number of sessions, termination status appeared to be related to clinical factors and not clients' expected number of sessions. Implications for clinical practice and agency session limit policies are discussed.     

在脉冲与切换控制下有时间延迟和随机扰动的、四维能源供需系统稳定性问题

本文运用脉冲与切换控制方法,研究了有时间延迟和随机扰动的四维能源供需系统稳定性问题.基于随机微分方程与脉冲和切换控制原理,提出了四维能源供需系统均方指数稳定的充分条件。     

二维非定常对流扩散方程的高精度紧致半显式差分格

在已有文献的基础上,发展了一种求解二维非定常对流扩散方程的高精度紧致半显式差分格式,其截断误差为O（τ2 ＋h4）,该格式形式上是隐式,但实际上可以显式计算.利用Fourier分析法证明该格式是无条件稳定的.数值实验结果验证了该格式的精确性和可靠性.