A study of airfoil parameterization,modeling, and optimization based on the computational fluid dynamics method

An excellent airfoil with a high lift-to-drag ratio may decrease oil consumption and enhance the voyage. Based on NACA 0012, an improved airfoil is explored in this paper. The class/shape function transformation has been proved to be a good method for airfoil parameterization, and in this paper it is modified to improve imitation accuracy. The computational fluid dynamics method is applied to obtain numerically the aerodynamic parameters of the parameterized airfoil, and the result is proved credible by comparison with available experimental data in the open literature. A polynomial-based response surface model and the uniform Latin hypercube sampling method are employed to decrease computational cost. Finally, the nonlinear programming by quadratic Lagrangian method is utilized to modify the multi-island genetic algorithm, which has an improved optimization effect than the method used on its own. The obtained result shows that the modified class/shape function transformation method produces a better imitation of an airfoil in the nose and tail regions than the original method, and that it will satisfy the tolerance zone of the model in a wind tunnel. The response surface model based on the uniform Latin hypercube sampling method gives an accurate prediction of the lift-to-drag ratio with changes in the design variables. The numerical result of the flow around the airfoil shows reasonable agreement with the experimental data graphically and quantitatively. Ultimately, an airfoil with better capacity than the original one is acquired using the multi-island genetic algorithm based nonlinear programming by quadratic Lagrangian optimization method. The pressure contours and lift-to-drag ratio along with the attack angle have been compared with those of the original airfoil, and the results demonstrate the strength of the optimized airfoil. The process for exploring an improved airfoil through parameterization to optimization is worth referencing in future work.     

研究性学习在课程中的开展--以《中央银行理论与实务》为例

本文以《中央银行理论与实务》为例，对我们在课程中开展研究性学习的实践与探索进行了总结归纳。作者提出应通过加强教学过程中的互动、选择有效的自主学习指导方式、开展专题研究活动、注重素质拓展等，促进研究性学习的开展，保证研究性学习的效果。     

全面把握社会主义和谐社会的基本特征

胡锦涛同志对社会主义和谐社会基本特征的界定,是依据马克思主义基本原理,总结我国社会主义建设实践经验,科学分析新世纪我国经济发展的新要求和我国社会出现的新趋势、新特点而作出的。这些基本特征相互联系、相互作用,体现和统一于全面建设小康社会的实践过程中;只有在推进社会主义物质文明、政治文明、精神文明发展的历史进程中,扎扎实实做好构建社会主义和谐社会的各项工作,才能促进社会主义和谐社会基本特征的实现。     

刑事诉讼中多元利益的平衡保护

刑事诉讼中存在国家与社会利益,犯罪嫌疑人、被告人利益,被害人利益等多元利益关系,虽然这些利益在根本上具有一致性,但是在刑事诉讼过程中更多地呈现出多元利益的碰撞与冲突。走向平衡是当代司法的发展趋势,在刑事诉讼中表现为对多元利益的平衡保护。本文旨在论述通过刑事诉讼立法对制度和程序的设计,以及司法实践中对各方利益的平衡和协调,实现刑事诉讼中多元利益的平衡保护。     

论孔子的理想人格及其现代诠释

“今天的中国是历史的中国的一个发展 ,我们是马列主义的历史工作者 ,我们不应割断历史。从孔夫子到孙中山 ,我们应给以总结 ,继承这一份珍贵遗产。”(《毛泽东选集》第二卷 P5 2 2 )社会主义市场经济的发展 ,精神文明的建设 ,需要建构新的理想人格 ,为此对孔子理想人格进行研究的同时必须是一种现代诠释     

An extended version of the theory of planned behaviour: the role of self-efficacy and past behaviour in predicting the physical activity of Chinese adolescents

This study aimed to use an extended theory of planned behaviour (TPB), which incorporated additional self-efficacy and past behaviour, to predict the intention to engage in moderate-to-vigorous physical activity (MVPA) and the MVPA level of Chinese adolescents. Questionnaires that focused on MVPA, attitude, subjective norm, perceived behavioural control (PBC), self-efficacy and past behaviour related to the MVPA engagement were administered to a sample of 488 young people. Multiple regression analyses provided moderate support for TPB. Three TPB constructs predicted 28.7% of the variance in intentions to engage in MVPA, and that PBC, but not intention, explained 3.4% of the variance in MVPA. Self-efficacy significantly affected intention and behaviour over and above the influence of TPB. Past behaviour had a small but significant improvement in the prediction of intention, but no improvement in the prediction of MVPA. Based on the results, interventions should target adolescent self-efficacy and PBC in physical activity participation.     

天启年间宫女休闲活动考

本文主要采用历史文献法,以明宫词为主,明史及明代野史杂记为辅,考辨明代天启年间,后宫不同地位的宫女平日里的休闲活动。宫女游戏是女性体育的组成部分,笔者在大量文献中发现了些许新材料,以期填补女性体育史中的空白。     

城市马拉松赛事转播研究——以2016九龙湖（宁波）国际半程马拉松为例

通过文献资料法、实地考察法、个案研究法研究宁波电视台的半程马拉松赛事的转播,对电视转播计划方案和直播流程进行分析。研究发现,宁波电视台的马拉松赛事转播突出画面呈现、信息提供、转播技巧。提出国内马拉松转播要树立观众为本的服务意识,跟踪新技术、新设备,组建马拉松转播团队进行异地转播等建议。     

中欧体育健康项目“健康儿童?健康社会”研究

“健康儿童?健康社会”（HCSC）是在欧盟体育健康发展准则下,构建由家庭、学校、体育组织、地区政府等诸多部门组成的复合体系,通过降低BMI值减少超重,改善运动能力,进而提高个人生活质量。主要通过对HCSC项目的历史发展进行论述,对HCSC的核心理念、组织构架、运作模式3方面进行剖析,并以中国实验学校为例,对实验干预前后学生的身体健康指标进行对比分析,旨为国内相关领域研究抛砖引玉。     

唐代侠义小说中的竞技活动

唐代侠义小说描绘了很多体育项目,其中有现实中的体育运动,还有文学作品中虚构的侠客武技。这些描写展现了唐代体育的发展水平,表现了唐代体育多样性、全民性、观赏性和宗教性等特点;反映了唐代的任侠风气,成功地虚构和铺陈了侠客的武技,从此侠文化成功地实现了文人歌咏向文学幻设的转化。