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。     

建筑材料资源的可循环利用

现代建筑是能源及材料消耗的重要组成部分,随着地球环境的日益恶化和资源日益减少,保持建筑材料的可持续发展,提高建筑资源的综合利用率已成为社会普遍关注的课题。欧美等发达国家对建筑材料资源的保护与可循环利用问题意识较早,已开展大量的研究与广泛的实践,如传统建筑材料的可循环利用、一般废弃物在建筑中的可循环利用及新型可循环建筑材料的应用等等,且大多由政府主导,以"自上而下"的方式形成对建筑资源保护较一致的社会认同。目前,我国对建筑材料资源可循环利用的研究已取得突破性成绩,但仍存在技术及社会认同等方面的不足,中国与发达国家在该领域还存在差距。     

从核心关系词的分布看阿尔泰诸语言的词汇关系

本文通过突厥、蒙古、满通古斯诸语言核心词中关系词分布的分析和统计, 考察了三个语族词汇之间的亲疏远近关系。三个语族语言的词汇之间主要表现为突厥一蒙古 一满通古斯这样依次推移的相关关系。这种推移性关系可能由于三个语族在历史的、区域的 接触与相互影响所引起的。     

试论电视教材的设计

针对当前电视教材设计中存在的重知识传授,忽视学生综合素质培养的现状,提出了以电视教材编制理论为基础,将素质教育的理念贯穿在电视教材的选题,教学设计、内容、结构、节奏、表达形式等环节的设计之中,编制素质教育需要的电视教材。     

Disposable waste,lands and bodies under Canada’s gendered nuclear colonialism

ABSTRACT

Nuclear colonialism, or the exploitation of Indigenous lands and peoples to sustain the nuclear fuel cycle from uranium mining and refining to nuclear energy and weapons production and the dumping of the resulting nuclear waste, occurs in many parts of the world and has generated considerable protest. This article focuses on a contemporary and ongoing case of nuclear colonialism in Canada: attempts to site two national deep geological repositories (DGRs) for nuclear waste on traditional First Nations land in Southwestern Ontario near the world’s largest operational nuclear power plant. Through histories of the rise of nuclear power and nuclear waste policy-making and their relationship to settler colonialism in Canada, as well as actions taken by the Saugeen Ojibway Nation (SON) and white settler anti-nuclear waste movements, the article explores how gender is at work in nuclear colonialism and anti-nuclear waste struggles. Gender is explored here in terms of the patriarchal nuclear imperative, the appropriation of Aboriginal land through undermining Aboriginal women’s status and the problematic relationship between First Nations and white settler women-led movements in resistance to nuclear waste burial from a feminist decolonial perspective     

核技术应用企业研发骨干激励机制探究

核技术应用一般是指射线技术与射线装置在医疗、工农业、地质调查、研究与教育中的应用。我国核技术应用企业研发骨干激励存在着激励的创新导向不足、薪酬激励机制不合理、组织文化有欠缺等问题,需结合行业特点及核技术应用企业研发骨干激励的特殊要求,采取相应的激励对策,包括从核心能力出发研究激励问题、建立适于激励研发人员的能力工资制、注重职业发展激励、注重责任激励、建立激发创新活力的组织文化等。     

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。     

新教学模式在非金属专业教学中的设计与应用

本文以多媒体网络教学为研究对象,初步探讨多媒体网络技术辅助教学的基本模式,并据此设计了基于多媒体和互联网技术的非金属专业教学系统,使远程异地教学、在线测试等成为可能,优化了传统教学过程,促进了教学质量,为我们提供一个全新的教学模式。     

需求牵引课题培养材料领域研究生爱国担当之志

培养研究生爱国担当之志是研究生教育的根本,是科研育人的生动体现,是落实全国高校思想政治工作会议精神与全国研究生教育会议精神的核心。以材料领域研究生培养为例,探讨需求牵引课题激发与培养研究生爱国担当之志的路径与成效。结合自主创新研究成果与航天迫切需求,激发学生奉献与担当之志,立志为我国航天强国事业贡献青春与力量,担当时代赋予的重任。实现将科学研究与思想引领有机融合,引导学生建立主动将个人成长与国家发展和中华民族伟大复兴相结合的信念,培养学生既具有过硬材料创新本领,又具有自信、爱国、奉献、担当意识,为中国特色社会主义现代化建设培养德才兼备的材料领域创新拔尖领军人才。