研究民间戏曲的珍贵资料——《四平戏传统剧目》述评

《四平戏传统剧目》是在民间老艺人口述本的基础上整理、编纂的一套丛书，收录了11个以口授心传的方式在民间传承了数百年的演出本。这些作品大都源自宋元南戏和明清传奇，较多地保留了民间创作的原始风貌。由于没有公开出版，印数非常少，这套丛书在国内外都难得一见，是研究弋阳腔、四平腔和闽北风俗民情的宝贵资料，值得珍惜。     

素质教育中的资料信息工作刍议

图书资料工作的质量和水平直接反映一个高等院校的办学质量和水平。在强调“素质教育”的时候,民族高等院校的图书资料工作也同样有一个如何调整自己的思路,开创新的工作局面的问题,从而既要为教学、科研服务,又要为校园文化建设开拓信息源,提供文化支持和信息服务的任务。     

麻黄综合研究 Ⅰ麻黄史料考证

本文对我国麻黄的名称、植物及其医药研究史料进行考证。同时，把麻黄研究历史分为前后汉时期、两晋南北朝隋唐时期、宋元金时期、明清时期、旧中国时期和新中国时期。     

Repurposing Materials and Waste through Online Exchanges: Overcoming the Last Hurdle

Online material and waste exchanges (OMWEs) provide online channels to repurpose by‐products, unused materials and waste from industrial and commercial facilities. Unfortunately, OMWE's also have challenges. First, sellers may have access to other disposal options and, as a result, may not fully commit to the exchange. Second, buyers can face high uncertainty about the product exchanged and the transaction being undertaken. Overcoming these challenges is the “last hurdle” to making OMWEs successful. This study investigates the factors that reduce the buyers' uncertainty and increase the sellers' commitment to the OMWE. We analyze novel transaction‐level data from an online exchange (MNExchange.org) combined with other archival public records on county‐level repurposing and disposal statistics. First, we find that regional repurposing policies and alternatives have a complementary effect on sellers' commitment toward OMWEs, resulting in increased OMWE exchanges. However, regional disposal policies and alternatives have a substitution effect on sellers' commitment, resulting in reduced exchange success. Further, greater product and transaction information reduce the buyer's uncertainty and increase exchange success. Finally, the analysis shows that users' (buyers and sellers) heavily rely on their prior experience with OMWEs. Specifically, higher familiarity between the buyer–seller pair and familiarity with the OMWE system leads to higher likelihood of exchange success. This study lays the foundation for understanding OMWEs and has important implications for developing policies and operations to increase online transactions of by‐products, materials and wastes.     

“高等数学”教学中如何处理教材内容

“高等数学”课程是大学各专业的基础理论课,是学生学习后续课程的基础。如何提高课堂教学效果,培养学生创新意识、创新能力是每位高等数学老师都会遇到并关注的问题。根据多年的教学实践,从多个角度多个视角给出了在“高等数学”课程教学中,通过对教材内容的合理处理,进而得以解决这一问题,达到提升“高等数学”课程教学质量的目的。     

搜索引擎辅助英语学习研究

随着计算机网络技术在教育教学领域的广泛应用，网络成为学生学习英语的重要平台。学会利用互联网搜索引擎辅助英语学习，是信息时代的学生应该掌握的学习技能之一。巧妙运用互联网搜索引擎，学生可以准确地道地运用英语、拓展英语阅读的广度和深度，甚至还可以帮助学生补上语言文化课。     

儿童哲学IAPC版教材及多元文本的分析

IAPC版教材是儿童哲学应用最广泛的教材,但我国学者对此套教材的內容分析不足,各学校又在未做充分了解之情况下,草率地搬出＂中国国情论＂,拒斥其实践上的应用。但我国部分学校已开发的校本教材,却充分利用了多元文本,适应了儿童哲学教材的国际发展趋势。为推动儿童哲学之健全成长,未来有必要在加强对IAPC版教材之研究的基础上,将其与现有材料适当结合使用。     

A perspective of composite sampling

Composite samples are formed by physically mixing samples. Usually, composite samples are used to reduce the overall cost associated with analytical procedures that must be performed on each sample, but they can also be used to protect the privacy of individuals.

Composite sampling can reduce the cost of identifying individual cases that have a certain trait, such as those with a rare disease or those exceeding pollution-level standards. Not much is lost by applying this method as long as the trait is relatively rare.

Composite sampling can reduce the cost of estimating the mean of some process. When samples are composited, the ability to estimate the variance is lost. In spite of this, the potential savings are so great that composite samples have been used.

Much of this paper deasl with the variance of estimators based on composite sampling when the porportions of hte original samples comprising the composite sample are actually random. Taking repeated samples and measurements on several composite samples complicates the prodcedure, but allows the estimation of between and within variation as well as measurement error.     

介电可调薄膜材料及压控微波器件研究

利用介电可调薄膜材料的调谐特性研制的介质压控微波器件高频特性好、功率容量大、响应速度快,还有易集成、功耗小、成本低、可靠性高的特点,相比半导体管、铁氧体以及MEMS器件有明显的优势。该文系统介绍了近年来国内外介电可调薄膜材料及压控微波器件的研究进展,并结合作者的工作评述了介电可调薄膜材料和压控微波器件的应用情况。除研究最为集中的钛酸锶钡BaxSr1-xTiO3(BST)材料,还介绍了具有较高调谐率的铋基焦绿石铌酸铋镁Bi1.5MgNb1.5O7(BMN)薄膜材料,该材料介电损耗低(约0.002),介电常数适中(约86),温度系数小,是一种极具发展前景的微波介电可调材料。     

对理工科学生课外阅读材料选择的调查分析

本文以144名兰州交通大学非英语专业理工科学生为对象,采用问卷和访谈形式进行学生课外阅读材料选择的研究。结果表明,学生对英语阅读材料有以下需求：语言实用性强,难易度适中;话题有趣味性、知识性;文章篇幅长短适中;标题本身有吸引力,能激发好奇心;阅读材料的选择与学习动机成正比。