《分子生物学》教学改革与实践新探

《分子生物学》是一门理论性和实践性较强的学科.通过实施优化教师队伍、教学内容、教学模式、理论与实践相结合和课程考核方式等一系列创新性教学改革手段,以达到强化大学生的理论知识和实验动手技能、提高其分析和解决问题的能力、培养创新性应用型人才的目的 .     

新疆能源资源生产结构演进分析及展望

各种能源资源生产结构的调整既反映了资源物藏量、资源开发技术、资源使用的政策导向,也反映了经济结构和社会生活方式。新疆是中国能源资源最丰富的地区之一,研究新疆能源结构具有研究经济结构的"信号"意义。借助于能源资源的数据分析研究新疆能源资源生产的结构演进,并结合定性分析方法对新疆能源资源结构演进的发展趋势展望预测。     

随机变系数线性结构关系EV模型的参数估计

利用随机加权正交回归最小二乘法给出了随机变系数线性结构关系EV模型中的参数估计。     

锅炉设计中的强度设计研究

论述了强度设计在锅炉设计中的地位和在锅炉设计人员与锅炉检验人员中需要提高认识的几个问题。     

PAA@Co复合薄膜的制备及光学特性研究

在磷酸电解液中,利用一次阳极氧化工艺成功的制备了具有结构色的多孔氧化铝薄膜。采用交流电沉积方法在氧化铝薄膜的孔洞中沉积金属Co纳米线,得到了高机械强度且具有高饱和度结构色的复合薄膜。控制氧化时间,可以调控复合薄膜结构色的颜色。采用遮挡法,结合多次电沉积工艺,成功的制备出具有彩色图案的复合薄膜。理论分析了薄膜结构色的变化与其微观结构的关系,结果显示,理论分析和实验结果相吻合。     

高校专业设置与大学生结构性失业的关系问题初探

高校专业设置滞后于市场需求,且专业的人才培养过程与社会对应用型人才的实际需求脱节,因而导致大学生专业结构性失业。可采取以下对策:高校结合区域发展目标错位发展,前瞻性地进行专业布局,以能力培养为导引,坚持特色育人,提升人才培养对社会需要的适应性。     

Revisiting Zhang’s scale of transactional distance: refinement and validation using structural equation modeling

Transactional distance has been defined as barriers to students’ engagement with learning in the online environment. This research updates Zhang’s (2003) scale of transactional distance, which quantified the extent of the barriers, in light of the massive changes in today’s web-based learning environment. The resulting revised scale of transactional distance (RSTD) is a parsimonious version with 12 elements (compared to 31 original) that measure the transactional distance between student and teacher, student and student, and student and content. The RSTD has excellent factorial validity and reliability, yields better fit statistics, and is easier and less time-consuming to apply. The transactional distance values are unique predictors of student satisfaction, which is correlated to learning and persistence (a major concern with massive open online courses). This information can form the basis for a systematic approach to improving the design of today’s contemporary open, flexible, distance education courses and thus serve as a valuable tool for researchers and educators alike.     

Teacher change beliefs: validating a scale with structural equation modelling

The objectives of the study were to validate a substantiated Teacher Change Beliefs Model (TCBM) and an instrument to identify critical components of teacher change beliefs (TCB) in Malaysian secondary schools. Five different pilot test approaches were applied to ensure the validity and reliability of the instrument. A total of 936 teachers from 47 high-performing secondary schools completed the survey. Structural equation modelling was applied to test the models. Exploratory factor analysis was employed to identify the underlying factors, whereas confirmatory factor analysis was applied to test the measurement models. The analysis yielded a three-factor TCBM: (1) discrepancy, (2) efficacy and (3) principal support. The results demonstrated a good fit of the model: normed χ² = 3.156, Tucker-Lewis Fix Index = .987, Comparative Fix Index = .991 and Root Mean Square Error of Approximation = .048. The results also provided evidence for convergent validity, discriminant validity and construct reliability. The TCBM is an empirically tested model derived in a local Malaysian cultural education setting. It provides direction for practitioners in planning and designing training programmes of change management for school principals in the enhancement of TCB among teachers in schools. Besides, Teacher Change Beliefs Scale is a promising and welcome tool for both practitioners and researchers. With only nine items, it is easy to administer and not time-consuming.     

中国谷物价格波动的传递路径解析

本文运用结构路径分析法,选取行业与生产要素等成本因素,探讨了中国谷物价格波动的传导机制。分析结果表明：一方面,不同行业中间投入及生产要素对谷物价格影响的传递机制存在差异。其中,化肥、农药、种子费、水电、物流与仓储、农业生产支持性服务、非熟练劳动力及土地成本的变化会对谷物价格产生显著直接影响;而其他行业、熟练劳动力和资本对谷物的价格冲击主要通过间接路径来传导。另一方面,从谷物价格冲击对居民的影响来看,无论是城镇居民或农村居民,低收入群体受谷物价格冲击的影响较大,收入相对较高群体受间接路径冲击的影响较大。     

后疫情时期中国武术产业高质量发展的实现路径

后疫情时期是指新型冠状病毒肺炎疫情得到有效控制,疫情防控从突发式防控向常态化防控转变,中国整个社会经济发展及居民日常生活逐渐恢复常态的阶段。在此阶段,中国武术产业受新型冠状病毒肺炎疫情的影响,出现了武术产业链延展停滞、武术产品与服务资源配置“失灵”的现象。后疫情时期迫切需要创新我国武术产业高质量发展路径。运用文献研究法、逻辑分析法等,以“供给侧结构性改革”为指导思想,以《武术产业发展规划(2019—2025年)》为主要政策依据,以弘扬中华体育精神、传播武术文化、满足民众武术产品与服务消费需求、增进人民健康为立足点,提出后疫情时期中国武术产业高质量发展的实现路径:1)弘扬中华体育精神:坚定中华武术传承与发展的文化自信;2)满足民众健康促进需求:加强我国武术公共服务供给;3)提升中国武术产业能级:创新中国武术产业链;4)调整中国武术产业结构:加强武术产业供给侧结构性改革;5)促进中国武术服务业发展:加强对武术服务业的统筹规划与监管。