Challenges in telemedicine equivalence studies

As the number of telemedicine programs continues to grow, the accuracy of diagnosis over interactive televideo is a central concern. Although investigators have begun to address diagnostic equivalency in telehealth clinics, few published studies reflect strong research design. The two presented telehealth programs completed randomized controlled trials in real-world clinical settings that addressed some of the methodologic shortcomings of prior studies. Diagnostic equivalency studies were completed across five telehealth specialty clinics: physical therapy, speech therapy, ambulatory pediatrics, child psychiatry, and developmental disabilities services. The two research teams encountered similar decision points in designing and implementing the equivalency protocols. This article addresses methodologic issues in choosing design, participants, technology, and evaluation measures. Although the paper focuses on interactive televideo, the issues raised are pertinent across telehealth technologies.     

新型双自转研磨法性能分析

V形槽、双V形槽、偏心盘研磨方式仍是生产球的主要研磨方式,但是它们受到人为因素的影响,一致性和稳定性较差,加工成本高,难以获得高球度的硬质材料球,使硬质材料球的应用仍受到限制,为此针对现有方法提出一种改进方法:新型双自转研磨方式。从研磨过程中球坯的位移、速度和角速度的分析并对现有方法的比较后,得出该方法可大幅度提高球坯的研磨精度和稳定性。     

精准性与在场性的迁移:水分配嬗变中的乡村社会关系研究

水分配作为乡村社会关系的重要载体,勾连着个体成员与乡村社区间的交往互动,基于滇西北地区WM村水分配实践,深入探究水分配嬗变中动态的社会关系。研究发现,精准性与在场性是水分配运行的两大核心要素,精准性凭借精确的时间单元格,生成成员行动的确定性与规范性,通过长期生产实践一般化为确定性与规范性,并最终构成乡村伦理规制的基础；在场性则以乡村社区成员身体为物质载体,端赖于身体参与实践,培育出共同体意识,进而生成乡村共同体社会组织体系。乡村伦理规制构成乡村社会的价值尺度和规范体系,而乡村共同体社会组织体系则构建了共同体组织互动网络,在两者共同作用下维护乡村共同体的稳定。市场经济下的理性选择与行政力量介入是水分配嬗变的两大诱因,市场经济下的理性选择导致水分配与土地之间的联系松动,降低了水分配的必要性；行政力量介入则意味着行政权力的干预直接破坏了村庄的自主性和“自我”需要的原则,动摇了水分配的民间社会基础。伴随劳动力身体与土地的长时间分离,附着于土地上的规范性明显弱化,水分配中的精准性被削弱、在场性模糊化,致使乡村共同体基础受到冲击。在乡村振兴背景下,处理好年轻人身体与场的关系是精准性现代重建的关键。     

汉英词典例证不足略观

词典是学习者学习外语、查阅资料中必不可少的工具，为读者提供充足的例证来理解并表达准确的含意。词典例证具有 很重要的功能，包括反映基本语义信息、反映概念信息、反映文化信息、规范英语、指导写作等方面，但是例证不足也会给读者 带来很大误导。以姚小平《汉英词典》第三版为例，从例证与释义的衔接不当、例证语体信息的不明确、例证不足及例证译文的 不准确四方面具体分析，重点结合百科知识，对比研究汉英词典中例证的不足之处，以期为汉英词典的例证准确性做出微薄贡 献。     

Accuracy of Numerical Solutions Using the Euler Equation Residuals

This paper is concerned with asymptotic properties on the accuracy of numerical solutions. It is shown that the approximation error of the policy function is of the same order of magnitude as the size of the Euler equation residuals. Moreover, for bounding this approximation error the most relevant parameters are the discount factor and the curvature of the return function. These findings provide theoretical foundations for the construction of tests to assess the performance of alternative computational methods.