排球选修课学习成绩评价方法初探

排球选修课学习成绩评价是学校体育课学习成绩评价的重要内容之一.通过对其考核内容、标准、方法的探讨研究,培养学生的排球运动专长,提高排球选修课的教学质量.     

校园文化建设面临的挑战与对策思考

在校园文化建设中 ,必须在多元文化中强调一元思想的指导性 ,在吸纳外来文化中坚持弘扬中国优秀传统文化 ,在各民族文化融合中坚持培育民族精神 ,在引导流行文化中坚持倡导高雅文化。只有这样 ,校园文化才能够真正体现“先进文化的前进方向” ,为建设有中国特色社会主义文化做出更大的贡献     

Developing a database of authoring system software

AuthorBase, a working prototype database of authoring system software, was developed as part of a study of authoring software conducted by the National Library of Medicine. In this article, the authors discuss development issues ranging from the scope of the database to what information to document. The prototype demonstrates that records of reasonable integrity can be derived from vendor-supplied information. However, users should understand that the database is only a starting point in searching for authoring software and a resource for becoming generally familiar with the technology.     

Integrated Building Envelope Design Process Combining Parametric Modelling and Multi-Objective Optimization

As an important element in sustainable building design, the building envelope has been witnessing a constant shift in the design approach. Integrating multi-objective optimization (MOO) into the building envelope design process is very promising, but not easy to realize in an actual project due to several factors, including the complexity of optimization model construction, lack of a dynamic-visualization capacity in the simulation tools and consideration of how to match the optimization with the actual design process. To overcome these difficulties, this study constructed an integrated building envelope design process (IBEDP) based on parametric modelling, which was implemented using Grasshopper platform and interfaces to control the simulation software and optimization algorithm. A railway station was selected as a case study for applying the proposed IBEDP, which also utilized a grid-based variable design approach to achieve flexible optimum fenestrations. To facilitate the stepwise design process, a novel strategy was proposed with a two-step optimization, which optimized various categories of variables separately. Compared with a one-step optimization, though the proposed strategy performed poorly in the diversity of solutions, the quantitative assessment of the qualities of Pareto-optimum solution sets illustrates that it is superior.     

老庄哲学异同探略

"道"、"人性"、"为道"是老庄哲学的主要命题,因此在这几个方面,老子和庄子的思想并无太大出入,但在社会政治观、刚柔观等问题上,两人的思想却存在着差异.本文拟从这些方面来探讨老庄哲学的异同.     

《微积分学》教学与调动学生学习积极性

研究了在《微积分学》课程教学中如何调动学生学习积极性的问题,指出,在教学过程中,教师要恰当地运用教学技巧、注意选择合适的教学方式,才能收到激发学生学习兴趣、调动学生学习积极性的教学效果。     

Preparation of Spherical FePO4 by Chemical Co-precipitation Combined with Spray-Drying

Well-shaped spherical agglomerates of FePO_4 particles were prepared by a novel method:chemical co-precipitation combined with spray-drying.Tap density analysis,Brunauer-Emmett-Teller analysis,characterizations of X-ray diffraction,scanning electron microscopy,and transmission electron microscopy confirmed that the micron-sized spherical agglomerates with high specific surface area and high tap density were composed of the uniform nano-sized particles.The effects of pH and reaction time on the morphology of the FePO_4 particles were investigated by experimental and theoretical analyses.The analyses revealed that amorphous FePO_4 was responsible for forming a well-shaped spherical agglomerate,and the ideal spherical particles were obtained at pH 3.The reaction time also played a significant role in controlling the size and surface morphology of the FePO_4 particles,and smooth spherical FePO_4 particles were obtained at a reaction time of 6 h.By this novel method,poly-porous spherical iron phosphate particles were prepared,which can be used with high efficiency in some special fields,especially as a precursor for synthesizing LiFePO_4 and catalysts.     

Solubility and Thermodynamic Properties of Sulfamethazine–Saccharin Cocrystal in Pure and Binary (Acetonitrile + 2-Propanol) Solvents

Transactions of Tianjin University - In this work, a new crystallization method was used to prepare two polymorphs of sulfamethazine–saccharin (SMT–SAC) cocrystal in bulk. The purity...     

Synergistic Effect of Cocamidopropyl Betaine and Sodium Lauroyl Sarcosinate

Transactions of Tianjin University - In this study, we investigated the synergistic effect of a zwitterionic surfactant (cocamidopropyl betaine) and amino acid surfactant (sodium lauroyl...     

试论翻转课堂在信息技术教学中的运用

翻转课堂是以教师为主导的创新型课堂教学模式,是对传统“填鸭式”的教学方法的一种变革。想要在信息技术课中运用翻转课堂,学校要加强教师队伍建设,重视专业教师对翻转课堂的认知培训;完善信息技术翻转课堂设施;重视对学生自主学习和自控能力的养成教育;优化翻转课堂在信息技术中的评价。