合法的边缘性参与下的M-learning共同体

移动学习是随着移动通讯技术的发展和设备的普及,在数字化学习基础上出现的又一新学习模式。从情景学习理论看,移动学习似乎有颠覆传统学习环境的可能,移动学习共同体在学习者合法的边缘参与上也与传统学习共同体存在着较大的不同。用情境学习理论对移动学习共同体进行分析,有助于我们弄清移动技术对学习和学习共同体产生了哪些影响,使我们在组织学习共同体时能趋利避害。     

Dynamic modelling and robust current control of wind-turbine driven DFIG during external AC voltage dip

INTRODUCTION Due to concerns about emissions from fossil fuels and the depletion of fossil fuel resources, re- newable energy systems are becoming a topic of great interest and investment in the world. In particular, wind energy has been the subject of much recent research and development. In order to overcome the problems associated with fixed-speed wind-turbine system and to maximize the wind energy capture, many new wind farms will employ wind turbines based on Doubly-Fed Induction Ge…     

试谈高校体育的有偿服务

我国社会主义市场经济体制的确立和发展,给高等教育的发展带来了新的活力和动力,也对高校体育工作如何主动适应社会主义市场经济体制,提出了新的、更高的要求,经济基础的变化必然要求人们在思维方式、价值观念等方面,有一个适应性的变化.国内高校目前采用体育有偿服务是一种行之有效的方法,它适应了市场的要求,促进了体育事业的健康发展.     

强制性会计信息披露存在的主要问题研究

强制性会计信息披露可以节约会计信息收集的总成本，刺激证券信息研究的供给。过度和不足的强制性会计信息披露，并未能实现中小投资者利益和上市公司合法权益的保护，并加大了披露成本和监管成本，长远来看难以实现证券市场的效率。     

教育网络化引发的矛盾关系思考

适应教育的发展和社会的需求,基于多媒体计算机技术、网络技术的教育网络化是教育发展的必然趋势,同时,也引发了一系列的矛盾关系。那么,在教育、教学中如何正确处理现代教育媒体和传统教育媒体、人与机器、班级授课与个别化学习、认知发展与情感发展等矛盾关系?针对这些敏感而又现实的问题,笔者在深入思考的基础上,做出了回答。     

优秀教师应该具有哪些特点

优秀教师应该有个性、善变，要多读闲书，有丰厚的文化底蕴，还应该进行教育教学研究。     

对开发和挖掘中职语文潜性课程的思考

中职语文蕴涵着深厚的人文精神和文化底蕴，有着丰富的语文潜性课程内容。中职语文教学，只有从语文教材、课堂教学和课外活动等层面，坚持本体性、适应性、主导性和沟通性原则，才能对中职语文潜性课程进行分类开发与挖掘。     

大学生素质教育与创新能力的培养

21世纪我国教育教学改革的主题是全面推行素质教育,素质教育是创新能力的前提。阐述了加强大学生素质教育的重要性,分析了影响大学生创新素质培养的因素,从提高教师的整体素质,培养学生的自学、动手、科研和表达能力等方面,提出了素质教育与创新人才培养的途径。     

高校图书馆与素质教育

高校图书馆在高校素质教育中具有非常重要的地位,具体表现为高校图书馆是高校素质教育的"第二课堂";她担负着教育计划和课堂教学不能完成的学生全面素质教育的任务;她提供了"环境育人"的学习环境和氛围;她的馆员是高校素质教育中的信息"导航员";她的文献信息资源为高校素质教育提供了"文献信息育人"的知识源泉.高校图书馆在其成长过程中发展和完善了自身的职能,即保存人类文化遗产、文献保障、传递文化信息、思想教育四大职能.这些职能使得她在高校素质教育中得以发挥独特而重要的作用,以适应高校素质教育的需要.     

An efficacy analysis of anti-vascular endothelial growth factor therapy for choroidal neovascularization secondary to multifocal choroiditis and comparison with wet age-related macular degeneration

Objective

To evaluate the effect of anti-vascular endothelial growth factor (VEGF) on juxtafoveal choroidal neovascularization (CNV) secondary to multifocal choroiditis (MFC) and wet age-related macular degeneration (AMD). Methods: In this retrospective, comparative study, 20 unique eyes with CNV were divided into two groups: 10 patients affected by MFC and 10 patients diagnosed with wet AMD. They all received local intravitreal (IVT) injections of ranibizumab, with 6 months of follow-up. Retreatment injections were performed based on findings suggestive of active neovascularization.

Results

Significant improvements were observed in the juxtafoveal CNV lesions, and average central macular thickness decreased in both groups following the anti-VEGF therapy (P<0.05). The average number of injections used in MFC patients was 1.6, while three injections on average were used in wet AMD patients (Z=?2.844, P=0.009). Best-corrected visual acuity was significantly improved in MFC patients after anti-VEGF therapy (P<0.05), and there was no significant difference in wet AMD patients between before anti-VEGF therapy and 6 months later (P>0.05).

Conclusions

IVT ranibizumab resulted in good clinical outcomes for juxtafoveal CNV secondary to MFC and wet AMD, but the average number of injections used in MFC was fewer than that used in wet AMD over a 6-month observation period. Compared with the wet AMD group, visual acuity was obviously improved in the MFC group at 6 months.