论元代王恽的科学活动

文中从四个方面讨论了王恽的科学活动：（１）王恽的科技工作与对某些自然现象的认识;（２）与李冶的关系;（３）与郭守敬的关系;（４）对农业的倡导与反对庸医     

耐力和抗阻运动对血脂代谢的影响

长期规律的体育运动均可有效地改善其不良的脂质结构,并能延缓因增龄而带来的不良影响,从而使冠心病的危险性显著降低。目前WHO已将体育运动过少列为冠心病的独立危险因素。因为运动训练对血脂水平的改善起到了至关重要的作用。本综述旨在阐明耐力运动和抗阻运动对血脂代谢的影响。     

高校学生社团管理方法初探

随着高等教育改革的不断深化,大学生学习、生活方式出现了许多新变化,学生社团以其组织的自发性、活动的自主性和符合青年学生特点,正越来越受到青年学生的欢迎。新时期思想政治工作进社团,对加强学生社团的建设和管理,推进大学生素质教育和维护高校稳定有着十分重要的作用。新时期高校思想政治工作进社团的任务越来越紧迫。     

贾兰、薛蟠论略

众所周知 ,曹雪芹的《红楼梦》塑造了众多鲜明的人物形象 ,人物之间的关系完美而复杂。其中贾宝玉、贾兰、薛蟠实际上是一个互相参照的阅读体系 ,即贾宝玉是“中间人物” ,而贾兰、薛蟠是两个极端。作者曹雪芹于此三人上着墨不均 ,但因为有了互相参照进行阅读的可能 ,从而使三个人物 (尤其是着墨较少的贾兰、薛蟠二人 )都得到了很好的性格表现     

Collaboration to teach English language learners: opportunities for shared teacher learning

This study examines collaboration between English for Speakers of Other Languages (ESOL) teachers and content-area elementary school teachers, and makes the case for conceptualising teacher collaboration as an opportunity for shared teacher learning. Using a sociocultural theoretical lens, this study examines how three pairs of elementary teachers and ESOL specialists used and constructed tools for collaboration, which mediated and made visible teachers’ learning processes. Employing interpretive enquiry and cross-case analysis, we examined data from classroom observations, teacher co-planning sessions and interviews with teachers. Findings demonstrated that collaborating teachers used tools to articulate and reconceptualise teaching goals, co-construct knowledge and ultimately transform teaching practices to meet the needs of culturally and linguistically diverse students. This study has implications for teacher education and ongoing professional development, by shedding light on the potential affordances of collaborative tools for teacher learning. Findings suggest that teacher education could harness these opportunities for learning by incorporating collaboration between ESOL specialists and content-area teachers as an integral part of preparing more qualified teachers to work with culturally and linguistically diverse students.     

Combined state and parameter estimation for a bilinear state space system with moving average noise

This paper considers the identification problem of bilinear systems with measurement noise in the form of the moving average model. In particular, we present an interactive estimation algorithm for unmeasurable states and parameters based on the hierarchical identification principle. For unknown states, we formulate a novel bilinear state observer from input-output measurements using the Kalman filter. Then a bilinear state observer based multi-innovation extended stochastic gradient (BSO-MI-ESG) algorithm is proposed to estimate the unknown system parameters. A linear filter is utilized to improve the parameter estimation accuracy and a filtering based BSO-MI-ESG algorithm is presented using the data filtering technique. In the numerical example, we illustrate the effectiveness of the proposed identification methods.     

新冠肺炎疫情对我国上市港航及船舶制造企业财务状况的影响

为量化新冠肺炎疫情对我国水路运输企业财务状况的影响,本文基于Z score模型对构成水路运输产业链核心的港口、航运、船舶制造三类上市企业财务状况进行评价。通过对比疫情发生前后企业财务状况的变化,明确疫情在不同时期对水路运输企业财务状况的影响,以及对不同类企业带来的异质化影响。研究结果表明,在疫情发生初期我国水路运输业受到短期负面冲击较大,企业经营利润均出现明显下降,其中港口和船舶制造企业财务状况恶化较为显著,而航运企业财务状况受影响较小。随着国内疫情得到有效控制,水路运输业整体经营状况逐渐向好,特别是船舶制造企业得益于船舶订单量的增长,财务状况改善较为明显。港口企业恢复则较为疲软,且不同港口企业间的分化有所加剧。航运企业总体财务状况相对较为稳健。     

P2P网络通信中穿越NAT方案研究

NAT技术的使用有效的解决了因特网中的IP地址紧缺问题,但同时给P2P网络通信带了很大的困难．针对P2P网络通信中NAT穿越的问题,分析了NAT设备对P2P网络通信的影响和P2P网络通信穿越技术,在这些技术的基础上提出了一种有效的NAT穿越方案,该方案适合不同NAT环境P2P网络通信．     

云南某氧化锰矿选矿试验研究

云南某氧化锰矿属于半风化型沉积锰矿,原矿锰品位16.17%,选矿试验研究表明：采用＂洗矿—跳汰—跳汰尾矿强磁选＂选矿工艺流程,锰总回收率达到了92.26%,选别指标理想。     

科技成果转化中隐性知识转化的障碍及路径研究

科技成果转化的本质是知识的转化,而其中隐性知识转化更是科技成果成功转化的关键所在.本文从隐性知识特性、成果转化方、成果受让方、转化双方差异、科技成果转化方式的角度出发,对科技成果转化中隐性知识转化的障碍因素进行识别.在此基础上,提出促进科技成果转化中隐性知识转化的路径,以期对提高我国科技成果转化的效率和效果有所借鉴.