意大利积极发展燃气车辆

<正> 在意大利,采用天然气作为燃料的车辆占车辆总数的1％,超过30万辆。还有约4％的车辆使用LPG为燃料。意大利有欧洲最大的天然气车(NGV)输配气管网和300多座加气站。每年总共有3.3亿m~3的天然气作为车用燃料,这占意大利天然气总销售量的0.6％。 意大利人从30年代起就从不间断地把     

芬兰试用LPG汽车

早在1988年芬兰便着手测试低排放的LPG载重汽车发动机。1990年建成了总质量可达17t的SISU牌LPG载重汽车的第一辆样车,测定结果令人满意。文中介绍芬兰试用LPG汽车的概况、MAN牌LPG公共汽车及SISU牌LPG载重汽车的试用情况及其成功经验。     

液化石油气站事故的预防措施

液化石油气(LPG)站的事故预防是时刻不容忽视的大事。该文在实现液化石油气站的安全生产、事故原因的分析以及事故预防方面都进行了比较详细的介绍。     

西门子6RA27及PLC在龙门铣床中的应用

通过龙门铣床三相半控桥,继电器电控系统的改造,介绍了德国西门子全数字化晶闸管直流调速装置6RA27和可编程逻辑控制器(PLC)在龙门铣床中的应用,对于设备改造有着重要的实际意义。     

电控发动机项目化课程教学中自制设备的研究与应用

结合发动机电控系统项目化课程的教学目标及对设备的要求,介绍了电控发动机多通道实时数据检测系统的研究背景和研究内容,阐述了开发该系统的总体设计方案,运算放大电路设计思路和系统软件开发要点,针对应用推广的需要说明了系统对设计对象的适应性,最后结合发动机电控系统课程实践教学的任务归纳了该系统在教学中的应用情况。     

美国能源信息署预测2030年世界石油供应格局

美国能源信息署(EIA)发表的<国际能源展望>2009(IEO)中对未来世界石油供应形势做出最新预测.这里的石油也称为液态燃料,包括常规石油、非常规石油和非石油液态燃料,即包括所有石油产品、天然气合成油、生物燃料和其它烃源产品,但不包括压缩天然气(CNG)、液化天然气(LNG)和氢气.     

提高中小型液化石油气储配站工程质量

中小型LPG管道、瓶装供气,目前仍占有重要地位。该文就LPG储配站的建设施工中应特别注意的一些问题进行了总结,并提出措施和办法。     

浅谈步进电机在汽车上的应用

随着电子技术、计算机技术和汽车工业的发展,步进电机在汽车上应用日益广泛. 一、在怠速控制系统(ISC)中的应用 怠速电控阀采用步进电机,它接受电控发动机ECU的指令,对发动机怠速运转的转速进行控制,控制的实质是对发动机怠速时的进气量进行控制.     

电气专业电控系统维修类一体化课程专业核心技能的教学设计 ——绘制故障树的教学设计

本文分析研究了电气自动化设备安装与维修专业电控系统维修类一体化课程专业核心技能及相应的教学设计,利用鱼骨图技术分析,得出本专业电控系统维修类一体化课程的专业核心技能为绘制故障树的结论,并通过具体学习任务,分析了绘制故障树需要具备或学习的知识、技能,提出了绘制故障树的相应教学设计.     

出席世界液化石油气论坛大会随想

介绍第十届世界液化石油气论坛大会、公司的体改和上海发展LPG汽车简况。     

Cultural Studies in Black and White

Political intervention is deeply etched in the history and theory of Cultural Studies. The vehicle of intervention is typically understood as textual and the measure of success as ‘has it changed the world?’ This graphic and textual essay argues for and enacts thinking of and practising intervention more innovatively and more modestly: as equally extra-textual, and as a site for experimentation in the folds among theory, practice, and the quotidian. The author’s original black and white charcoal and pastel images are paired with text to explore the potential for an articulation of the visual and the textual to engage, convey, actualize, and produce concepts and insights of Cultural Studies. In evocative images and accessible language it enacts a new mode of engaging the theory and practice of Cultural Studies, specifically engaging concepts of articulation and assemblage, movement and things, questions of identity, the importance of affect, the power of transformation, youth cultures and resistance, The Black Lives Matter movement and matters of race, the struggles of women, the challenge of overcoming culturally engendered hatred of difference, and the difficulties of negotiating change in the precarious circumstances of contemporary culture.     

Cultural studies of extraction

The special double issue at hand offers Cultural Studies engagements with extractivism and the myriad of conflicts, struggles and other processes and phenomena that have risen together with the on-going intensification and expansion of extractivist industries and exploitation. In this article, we examine the political and epistemological stakes of these engagements, and introduce the different perspectives from which the notions of extractivism and extraction are approached within this issue. We argue that as a conceptual framework loaded with political meaning and potential, and able to address the on-going moment of dwindling resources, environmental degradation and heightened social and economic inequality, extractivism and studies of extraction are crucial for the discipline’s efforts to engage contemporary culture politically, and to examine on-going processes of exploitation and subjectification through specific context and cases. Many of the articles included in this issue expand understandings of extraction, and present a broad range of methods and analytical frameworks through which different forms of ‘extractivism’ and its consequences might be examined, deciphered and discussed within Cultural Studies. And yet, what emerges out of these efforts eventually, is the ultimate centrality of the war between climate and capital for contemporary politics of globalization.     

上海城乡统筹发展的路径和突破口研究

上海城乡二元结构的深层次问题突出表现为:城乡居民收入差距仍然明显,促进农民增收的难度加大;郊区人口持续导入,对公共服务和社会管理的要求提高;农村土地和产权制度改革滞后,深化改革的条件尚不成熟;郊区城市化进程加速,管理体制和管理模式亟待转变;新城和小城镇等城乡统筹载体建设有待加强。上海城乡统筹发展要牢牢把握公共服务均等化、发展成果共享化、发展权利平等化内涵,坚持以城带乡、城乡一体、互动发展,以推进新型城市化战略为主攻方向,以加强城乡规划一体化为前提,以加快新城开发建设为突破口,以土地管理、集体产权、社会管理制度改革为支撑,以基本公共服务均等化为着力点,大力推进工业向园区集中、居住向社区集中、农业向规模经营集中,努力实现优化农村土地资源配置方式、优化城乡资源要素流动方式、优化城乡统筹发展方式,推进城乡一体化发展。     

规训与抵制:大学生视觉形象重构

传统影像建构出大学生的消费者、服务者、普通人形象,却在悠远的宏大叙事向日常生活实践的转向、新媒介、城市空间等面向中被当代大学生解构和重构。这三个面向统合在青年亚文化中。并为大学生进行自身形象的视觉建构提供了技术和思想准备。政治话语与娱乐诉求的分离、日常生活审美化的趋势与商品利益的幕后操纵所形成的合力,询唤着当代大学生的时尚表现者和身体抵抗者形象的视觉建构:时尚的区分与整合功能使大学生实现自我认同和社会归属,同时内生抵抗主流意识形态的力量而建构身体抵抗者形象。抵抗的实质其实是大学生与媒介和商品合谋,当代大学生的视觉建构与大众媒介的商业利益相互邀约、彼此验证,携手建构出媒介暗自得意、大学生自觉另类、社会秩序和谐稳定的"整体的生活方式"。     

中国青年文化景观的形成轨迹与引导理路

中华人民共和国成立以来,特别是改革开放以来,青年文化发展出现服从与反思、解放与迷茫、理性与矛盾勾勒的变迁图景,也反映出新时代青年文化的发展趋向。新时代的青年文化景观既具有青年文化的预见性与超越性、进取性和建构性、理想性和生活性等共性特征,又突出表现为雅俗共赏、进退有度、家国兼顾的时代特性。新时代,应注重从个人追求与社会理想的统一、独立思想与过硬本领的统一、青春热情与社会担当的统一几方面入手,突出政治引领、思想引领、责任引领在青年文化引导上的关键作用,推动青年文化持续向前发展。     

关于上海科技服务业发展环境的调研

近年来,上海科技创新体系总体呈现良好发展态势。但现阶段仍然存在着科技成果转化率低、科技成果转化供需双方两头冷的现象。究其原因,地区科技服务业发展相对滞后是一个重要原因。总体来看,上海虽已初步形成了科技创新服务体系,但科技服务能力的疲软仍是阻碍创新型城市和创新型国家的建设的短板。上海应逐步调整科技服务业的发展路径,将科技服务业列入现代服务业的主要产业来培育,进一步优化科技服务业市场化运作环境,有效激发其活力,从而提升上海城市综合服务功能和自主创新能力。     

Assemblages and affect: migrant mothers and the varieties of absent children

Drawing from stories told by migrant women in Hong Kong, this article builds on previous studies of ‘left‐behind children’ and calls for greater attention to the spectrum of sorts of absent children and to the formation of queer or less normative forms of migratory families. Taking a two‐pronged approach, I present an on‐the‐ground ethnographic and affective approach through several vignettes, and consider key elements of a more mid‐range and distanced ‘global assemblage’ approach to the institutions and expert knowledge that shape the experiences and practices of migrant mothers, migratory families, and the spectrum of absent children. This article posits that one's biological children, perhaps the most familial of kin, can become familiar or even unfamiliar strangers through contemporary processes, technologies and practices of migration and separation, and that the process of migration makes and unmakes conventional and unconventional sorts of families. While affective and assemblage approaches are independently valuable, combined they offer richer understandings of the complex interplay of factors – at various levels – that shape normative and queer families and different types of children's absences.     

Teaching and Learning Theory For Family Therapy Practice: On The Art and Craft of Balancing

As with all practice knowledges, family therapy theory sits in a complicated relationship to practice. This paper offers a set of reflections exploring challenges of teaching and learning theory for, and about, practice in family therapy. The importance of teaching particular frameworks of practice sits in tension and balance with the importance of the common factors of therapeutic change, and the inseparability of the use of self and the use of particular practice knowledge. Passion and commitment to particular ways of working is held in balance with the need for flexibility and the freedom to think independently. Discipline and focus is balanced with creativity and the room for integration. A number of balancing practices are identified in the art and craft of teaching, and the contextual issue of power and vulnerability in the teaching and learning relationship is acknowledged. Finally, the three ‘Rs’ in teaching and learning family therapy practice theory are drawn out – reflection, the recursiveness of theory and practice, and the reflexivity of self in relation to context and knowledge.     

The Sociologies of Knowledge,Science, and Intellectuals: Distinctive Traditions and Overlapping Perspectives

This article reviews sociological approaches to the production, evaluation, and diffusion of knowledge in the arena of scholarly production – the sciences, social sciences, and humanities. At first glance, sociological approaches to scholarly knowledge production seem to congeal around the hard sciences, on the one hand, and philosophy, on the other. I eschew this polarization and construct an analytic frame of reference for analyzing the sociological dimensions of scholarly production more generally. This article maps successive phases of sociological approaches to scholarly production, by overlaying and distinguishing among theories in the sociology of knowledge, sociology of science, and sociology of intellectuals. I analyze classical theorists’ emphases on class analysis and the social function of intellectuals; mid-century adaptations of functionalism, social structure theory, and institutional theory to analyze intellectual and academic life; critical and reflexive theories, including feminist critiques of science and knowledge; recent emphases on how social movement politics and social networks influence intellectual change; theories of the university as a professional arena and a field of culture production; and studies of knowledge-making practices in group research situations. In addition to arguing for more theoretical and methodological precision in analyses of scholarly and scientific knowledge-making, I conclude with cautionary tales and future prospects for sociological studies of modern academic life.     

Understanding social factors and inequalities in health: 20th century progress and 21st century prospects

The development of social epidemiology and medical sociology over the last half of the 20th century, in which Leo Reeder played a central role, transformed scientific and popular understanding of the nature and causes of physical health and illness. Viewed in the early 1950s as shaped almost entirely by biological processes and medical care, physical health and illness are now understood to be as much or more a function of social, psychological, and behavioral factors. Utilizing a stress and adaptation conceptual framework, social epidemiology has identified a broad range of psychosocial risk factors for health, most notably: (1) social relationships and support; (2) acute or event-based stress; (3) chronic stress in work and life; and (4) psychological dispositions such as anger/hostility, lack of self-efficacy/control, and negative affect/hopelessness/pessimism, with new risk factors continuing to be identified. However, proliferation of risk factors must be balanced by conceptual integration and causal understanding of the relationships among them, their causes, and consequences. One source of such integration and understanding has been the rediscovery of large and persistent socioeconomic and racial-ethnic disparities in health. Socioeconomic position and race/ethnicity shape individuals' exposure to and experience of virtually all known psychosocial, and well as many environmental and biomedical, risk factors, and these risk factors help to explain the size and persistence of social disparities in health. Improving the socioeconomic position of a broad range of disadvantaged socioeconomic and racial-ethnic strata constitutes a major avenue for reducing exposure to and experience of deleterious risk factors for health, and hence for improving the health of these groups and the overall population. This in turn requires better understanding of the macrosocial forces that influence the socioeconomic position of individuals.