“沉默的螺旋”在高校思想教育中的体现及启示

从70年代,伊丽莎白·诺尔·诺依曼提出"沉默的螺旋"理论起,"言论偏向"问题开始频繁出现在人们的视野中。至此社会各阶层都遭受了这一理论的枷锁。本文从当下大学生这一特殊群体出发,阐述了"沉默的螺旋"在高校思想教育中的体现,并探究了在面对这一窘境时可行的解决办法,为其他群体的话语权研究提供了科学依据。     

斜齿轮分度圆螺旋角的测定方法

详细介绍用拓印法测量斜齿轮分度圆螺旋角的方法，给出利用公法线和齿轮加工机床检测分度圆螺旋角的方法和公式。     

肺内孤立性结节的HRCT扫描与病理相关研究

目的：探讨肺内孤立性结节（Solitary pulmonary nodule．SPN）的HRCT特征与良恶性病变之间的关系。方法：对66例肺内孤立性结节病灶进行螺旋HRCT增强扫描，观察结节增强的程度、周围的血管以及瘤肺界面的特征，来判定结节的良恶性。结果：病理证实50例周围型肺癌（Peripheral lung cancer，PLC）．16例良性结节。①PLC血供较良性结节丰富；②动脉期结节强化程度增强明显，平衡期达到峰值为PLC，PLC瘤肺界面清晰伴有深分叶，良性结节周围模糊。结论：PLC血供丰富、增强快，平衡期达最高，瘤肺界面清晰；良性结节增强慢，与肺界面关系模糊。     

热风炉改造及相关问题分析

旋流顶燃式热风炉与内燃式热风炉相比在风温水平上,提高了一个档次,在整体结构上旋流顶燃式热风炉的蓄热面积更大,燃烧更充分,更均匀.在热风炉的日常维护和检修上,旋流顶燃式热风炉避免了燃烧室内部掉砖阻碍煤气畅通以及煤气泄漏等现象,减少了检修量,有利于安全生产.     

Security considerations for the spiral development model

Security measures have been well established within the waterfall development life cycle model. However, more software projects are using the spiral development life cycle model. Software developers and project managers can easily forget about adapting security measures. The spiral model uses iterative steps that can create changes in each phase of software development process. This will challenge security to ensure the application has few flaws or vulnerabilities that could be exploited. Failure to impose the right security measures at each of these phases can open up vulnerabilities for hackers to exploit and prove costly in patching. This paper will explore areas where security can be engaged within each iteration step of the spiral development model. This way security can continue protection of the software product as it becomes ready for deployment. The paper will help organizations realize where to deploy security measures to reduce vulnerabilities in the software application.     

螺旋切纸刀代用刃型的设计

采用椭圆刃型似代替螺旋刃型在理论上存在切纸误差,本文分析了主要设计参数选择对误差的影响。为刀辊的设计提供了理论依据。     

三七叶总甙的钙拮抗作用

三七叶总甙(PNLTS)抑制由异丙肾上腺素引起的加快豚鼠右心房自发性频率,使量一效反应曲线右移。PNLTS也抑制大鼠主动脉螺旋条由高K~+去极化和NA诱发收缩张力增加作用。PNLTS与哌克昔林(Per)作用相似,都有钙拮抗作用,能抑制ROC和PDS。并证明ROC与PDC分别为膜上两种各自独立的通道,PNLTS与Per对两者都有抑制作用,而且对ROC的作用强。     

Applying educational models in technological education

This paper presents a group of elements to improve teaching and learning in technological education. These elements are based on some contributions issued from contemporary educational models, namely, the thematic approach, meaningful learning, concept maps, and the spiral curriculum. Based on a thematic approach, a new way is proposed to select the contents that will be explored in the educational process. We emphasize the benefits of a thematic approach in students’ motivation. After contents are chosen, we propose the use of the directives of meaningful learning and concept maps, as a method and as a tool, respectively, to organize knowledge hierarchically, from general and inclusive concepts to specific ones. This may facilitate learning and understanding of the great bulk of knowledge to be dealt with during technological courses. A proposal has been submitted for a teaching module in computer networks and also for a complete course plan. The spiral curriculum was applied during the development of learning in the classroom, where some fundamental concepts were introduced many times over, adding more details gradually. A qualitative analysis of the application of these educational proposals, including learning evaluation aspects, is also presented.     

Origin and decline of the first university radio web in France

Résonances was the first university radio web in France. It was founded at the University of Limoges, in 2010. This article is about the origin and decline of this transmedia project. Two strategies are here unfolded: historical the first one, ranging from the conception of the idea, the vicissitudes experienced by the team for implementing the radio and keeping it alive; the second one, a short semiotical approach. Following the principle according to which is sometimes necessary to move to a higher level of analysis to understand the lower one, the thesis of this article is that the suppression of Résonances cannot be understood either historically or semiotically without adding a higher level of analysis.