Ecopedagogy and radical pedagogy: Post-critical transgressions in environmental and geography education

This critical essay/review of The Radicalization of Pedagogy: Anarchism, Geography, and the Spirit of Revolt, edited by Simon Springer, Marcelo Lopes de Souza, and Richard J. White, is a geneaologically oriented “conversation” of the discourse of critical environmental education, in particular critical pedagogy and ecopedagogy, and anarchic geography education, in particular deschooling. The purpose is to restory a critical materialist and symbolic frame of “post-critical” inquiry and praxis in EE and EER (environmental education research).     

Latina/o Parent Organizing for Educational Justice: An Ethnographic Account of Community Building and Radical Healing

This article describes a parent organizing effort with Latina/o immigrant parents in a large, high-poverty, racially and linguistically diverse urban school district. Drawing from ethnographic research and the theoretical framework of mujerismo, it examines the relational processes of community building and radical healing that occurred in weekly community-based parent workshops. Findings suggest the need for more research that empirically examines the relational, embodied, and pedagogical dimensions of parent organizing work.     

黑泥对平菇生物学转化率和抗氧化能力的影响

为了研究黑泥对平菇生长和抗氧化能力的影响,进一步研究黑泥的抗氧化机理,通过单因子对照组试验研究了平菇基础培养基中添加不同比例的黑泥（0、0．5％、1％、2％）对平菇生物学转化率、超氧化物歧化酶（SOD）酶活性和丙二醛（MDA）含量的影响。结果表明,基础培养基中添加2％黑泥,平菇的生物学转化率最大,超氧化物歧化酶的活性最高,丙二醛的含量最低。黑泥可提高平菇的生物学转化率,提高平菇抗氧化性能。     

突破性产品创新的模糊前端管理研究

分析了突破性产品创新的实施困境：如何产生突破性创新的创意并从成千上万个创意中成功地选择。在综述传统突破性创新对该问题解决方案的基础上,辨析了突破性创新模糊前段的概念,系统阐述FFE管理的内容和步骤,并对其进行评述,作为突破性产品创新创意产生和识别的基础。     

Participation, Remediation, Bricolage: Considering Principal Components of a Digital Culture

Within media theory the worldwide shift from a 19th-century print culture via a 20th-century electronic culture to a 21st-century digital culture is well documented. In this essay the emergence of a digital culture as amplified and accelerated by the popularity of networked computers, multiple-user software, and Internet is investigated in terms of its principal components. A digital culture as an underdetermined praxis is conceptualized as consisting of participation, remediation, and bricolage. Using the literature on presumably “typical” Internet phenomena such as the worldwide proliferation of independent media centers (indymedia) linked with (radical) online journalism practices and the popularity of (individual and group) weblogging, the various meanings and implications of this particular understanding of digital culture are explored. In the context of this essay, digital culture can be seen as an emerging set of values, practices, and expectations regarding the way people (should) act and interact within the contemporary network society. This digital culture has emergent properties with roots in both online and offline phenomena, with links to trends and developments predating the World Wide Web, yet having an immediate impact and particularly changing the ways in which we use and give meaning to living in an increasingly interconnected, always on(line) environment.     

组织距离、知识流动对联盟企业突破式创新的影响

本文基于战略管理理论和知识管理理论，研究组织距离对战略联盟企业突破式创新的影响，并探索知识流动在其中扮演的中介作用。同时，引入知识保护能力作为调节变量，从而构建了本研究的理论模型。以471家战略联盟企业为研究对象，采用回归分析方法进行实证检验。结果表明：技术距离越远越有利于联盟企业实现突破式创新，社会距离越近越有利于联盟企业突破式创新；知识获取和知识泄漏在技术距离和社会距离与突破式创新之间发挥部分中介作用；知识保护能力负向调节知识泄漏与突破式创新之间的关系。     

影响突破性创新的环境因素分析和实证研究

本文着重于对影响突破性创新的环境因素进行实证研究。首先在文献综述基础上提出有关理论假设;其次通过问卷调查获得相关的资料与数据,运用SPSS软件分析各个环境因素对突破性创新和渐进性创新的不同影响;最后得出研究结论以为促进企业进行突破性创新提供有效借鉴。     

pk元域上元素的n次根

设F是一个pk元域,n是一个正整数.讨论了F中元素的n次根和n次单位根,给出了F的n方元素和F的根式扩域.     

山莨菪碱清除氧自由基和抗脂质过氧化作用

山莨菪碱对Fenton反应生成的·OH具育较强的直接清除作用,其IC_(50)为276mg.L~(-1),作用比·OH特异性清除剂甘露醇(IC_(50)为1349mg·L~(-1)强。对黄嘌呤-黄嘌呤氧化酶系统产生的O(?)也有较强的清除作用,其IC_(50)126mg·L~(-1)。山莨菪碱对自由基发生系统(FRGS)诱导离体大鼠心肌匀浆组织产生的脂质过氧化(LPO)作用有明显的抑制效应。对FRGS诱导离体大鼠心肌线粒体膜LPO也有一定的抑制作用。结果提示山莨菪碱的抗脂质过氧化作用与清除氧自由基作用有关。     

具有Fermat性质的有限环

文[1]定义了抽象Fermat环,并研究了它的一些性质·证明所有Fermat环一定是有限个有限域的直和,进而给出所有Fermat环的结构·