时滞脉冲双曲型泛函微分方程解的振动性     

薛秋条  张玉兰 《洛阳师范学院学报》2005,24(2):18-20,101

本文研究脉冲双曲型泛函微分方程解的振动性质,给出了解振动的充分条件.  相似文献   

网络视频监控产品测试方案的改进设计     

蔡逆水  彭明星 《河北软件职业技术学院学报》2005,7(3):51-52,55

网络视频监控产品入网检测的关键在于采用的测试策略和测试方法。本文提出了验收该类产品的测试方案和测试策略，并以“守望精灵”网络视频监控平台为实例，对重要指标的测试用例进行了改进设计。实践证明改进后的方案具有较高的测试稳定性和较小的测试误差等优点。  相似文献   

一类二阶泛函边值问题正解的存在性     

沈文国 《天水师范学院学报》2006,26(2):10-11

讨论方程u″ h(t)f(u)=0在边界条件u'(0)=1乙0b(t)u'(t)dt,u(1)=t0乙0a(t)u(t)dt-1乙t0a(t)u(t)dt下正解的存在性,给出了该问题至少存在一个正解的存在性定理。  相似文献   

馆藏特色数字资源众包对图书馆核心能力及组织边界的影响研究     

黄婧  王琼 《图书馆》2022,(2)

文章以企业能力与组织边界相关研究成果为指导,结合目前已成功实施的部分图书馆众包案例,对馆藏特色数字资源的规划、建设与服务过程展开分析研究。文章认为馆藏特色数字资源众包不仅利于增强图书馆建设数字特藏的能力,也有利于提升馆员专业能力、提高用户满意度、提升图书馆知识服务与创新能力,进而增强图书馆核心能力,不断扩大组织边界。最后文章提出图书馆需重新审视功能定位,确保核心能力与竞争优势,真正服务于知识经济和现代信息社会的建设。  相似文献   

Placing Facebook     

Brett G. Johnson  Kimberly Kelling 《Journalism Practice》2018,12(7):817-833

Facebook is challenging professional journalism. These challenges were evident in three incidents from 2016: the allegation that Facebook privileged progressive-leaning news on its trending feature; Facebook’s removal of the Pulitzer Prize-winning “Napalm Girl” photo from the pages of prominent users; and the proliferation of “fake news” during the US presidential election. Using theoretical concepts from the field of boundary work, this paper examines how The Guardian, The New York Times, Columbia Journalism Review and Poynter editorialized Facebook’s role in these three incidents to discursively construct the boundary between the value of professional journalism to democracy and Facebook’s ascendant role in facilitating essential democratic functions. Findings reveal that these publications attempted to define Facebook as a news organization (i.e., include it within the boundaries of journalism) so that they could then criticize the company for not following duties traditionally incumbent upon news organizations (i.e., place it outside the boundaries of journalism). This paper advances scholarship that focuses on both inward and outward conceptions of boundary work, further explores the complex challenge of defining who a journalist is in the face of rapidly changing technological norms, and advances scholarship in the field of media ethics that positions ethical analysis at the institutional level.  相似文献   

Press Credentials and Hybrid Boundary Zones: The Case of WorldNetDaily and the Standing Committee of Correspondents     

Jordan M. Foley 《Journalism Practice》2020,14(8):933-953

ABSTRACT

Press credentialing practices are a vital, yet understudied site of scholarly research on journalistic norms and practices. Press credentialing not only structures internal professional hierarchies, but they also signify the boundaries of the journalistic field itself. This paper explores the legal and theoretical implications of press credentialing to cover the United States Congress, drawing on the concepts of boundary work and journalistic authority to demonstrate the material impact of the space between fields on professional legitimation in journalism. Using WorldNetDaily (WND) as a case study, I argue that the Standing Committee of Correspondents (SCC) occupies a hybrid boundary zone between the journalistic and political fields, generating a unique tension in First Amendment jurisprudence that places journalists in a paradoxical role as both the professional embodiments of free speech and its constitutional steward. The resulting jurisdictional conflict between the SCC and WND extends the relational model of journalistic authority by articulating how journalist-state relations can fundamentally augment the process of legitimation at its fuzzy boundaries. The relevance and implications for press credentialing practices in the digital age are discussed.  相似文献   

美国高校学生运动员招募问题的治理与启示     

任振朋  李利利  肖丽斌  王润斌 《武汉体育学院学报》2020,54(9):26-33

针对美国大学体育联盟（NCAA）在学生运动员招募过程中长期存在非法招募和学术作弊等违规行为，研究以边缘腐败视角解读相关违规行为及其特征。研究认为，违规方式较为轻微因而具有模糊性，直接利益受益者相互包庇因而具有隐蔽性，破坏了高校招生公平制度因而具有衍生性。NCAA为维持联盟公平公正准则，通过健全机构严格审核、精细招募程序量化标准、制定"极限施压"惩治制度等措施取得一定治理效果，但也存在治理局限。我国大学运动员招生实践中应采取厘清自主招生权限、构建全面监督体系、健全法律法规体系、开展反腐败教育等措施严厉打击招生腐败。  相似文献   

环形域上的Dirichlet问题     

吕金城  原新生 《安阳师范学院学报》2005,(2):1-3

讨论了Laplace方程在环形域上的Dirichlet问题的求解方法,给出了该问题的求解过程和Fourier级数解的结果,并指出了Poisson积分公式在具体求解中的不适应性,对于理解S-L方程在不同边界条件下,特别是自然边界条件和周期边界条件下的本征值问题具有重要意义.  相似文献   

三论文艺美学的对象、范围和学科定位     

周来祥 《广西师范大学学报(哲学社会科学版)》2004,40(3):37-43

艺美学不但是客观存在的，而且是学科发展的必然结果。艺美学不是传统的艺术哲学，也不是美学与艺学交叉产生的第三种学科，而是由哲学认识论、心理学、社会学、伦理学、生存实践等各种角度、多个层次、多种方法高度融合所规定的美学的中介学科和分支学科。艺美学具有独特的研究对象、内容和范围。同时它又是艺社会学、艺心理学的并列学科。  相似文献   

浅析偷税的认定     

高林  张金川  刘文升 《洛阳师范学院学报》2007,26(4):178-180

偷税是当前普遍存在的一种税务违法行为,应当具备主体、客体、主观和客观四要件,其中主观要件在理论和执法实践中最具争议性。依据偷税概念进行分析,从行为方式上讲,偷税本身均有主观故意的成分,因此,其主观方面也是故意的。从时间界限上看,认定偷税的时间界定应当是法律规定的申报期限。自查补报、虚开发票和认定偷税的时间界限等是执法工作中分歧较大的几个具体问题,研究认定自查补报是一种偷税行为,对虚开发票的行为人,只能按发票违法进行处罚,核定征收不能认定为偷税行为。  相似文献