数学课程学习手册在教学中的有效作用

提高学生完成作业的质量,是高等数学教学中一个关键环节,是检验教师的"教"与学生的"学"成果的重要凭证。从分析目前高职院校高等数学学习现状着手,围绕着"专业案例、学生主体、能力目标"三大要素,在精心编制《数学课程学习手册》的基础上,论述了数学课程学习手册在高职数学教学中的有效作用。     

Infants' Manual Exploration of Pictorial Objects Varying in Realism

In previous research, we established that 9‐month‐old infants manually investigate pictured objects by hitting, rubbing, and grasping as if to pluck them off the page. This behavior suggests that infants do not understand the 2‐dimensional nature of pictures. Although they can perceive depth cues and distinguish pictures from objects, they do not appreciate the significance of these cues; that is, they do not realize how depicted objects differ from real ones. We report 2 studies that support the idea that infants' manual response to pictures is driven by the resemblance of depicted objects to the real objects they represent. In Study 1, we report that infants' manual investigation of pictures is directly related to how realistic they are: The more depicted objects look like real objects, the more manual investigation they evoke. In Study 2, we show that 9‐month‐old infants' manual behaviors are concentrated on depicted objects even when there are areas of greater perceptual contrast on the page. The results are discussed with respect to the early development of pictorial competence.     

城市化--结构调整的新切入点

结构失衡,是当前制约中国经济发展的一个重要问题,主要表现为产业结构失衡、地区结构失衡、能量分布失衡、要素分布失衡及人口分布失衡等诸多方面.现在在投资、消费和出口等方面出现的许多问题归根结底都是结构问题的不同表现.从国际经验来看,解决结构转型问题尽管需要政府作出巨大努力,但主要还是企业在市场导向的作用下进行自我调节.我们认为,城市化将成为中国结构调整新的切入点,从而为经济增长搭建平台.     

Manual flying skills under the influence of performance shaping factors

This paper describes an experimental study investigating pilots' manual flying skills. In today's line oriented flight training, basic flying skills are neglected frequently. So, the study examines the manual flying skills of commercial airline pilots under the influence of several performance shaping factors like training, practice or fatigue in a landing scenario. The landing phase shows a disproportionate high percentage of aircraft accidents and it is typically flown by hand. The study is to be undertaken with randomly selected pilots in a full motion flight simulator to ensure a high validity of the results.     

Supervisors in ergonomic change of meat cutting work

Being a supervisor is an important and lonely occupation. The aim of this study was to identify barriers and opportunities in working conditions for supervisors, being facilitators and implementers of change for meat cutters. Nine supervisors of meat cutters in one large company were interviewed. The semi-structured interviews covered their roles as supervisors, performance of the change process and their own working conditions. Notes were taken and structured in themes. Similarities, differences, plus and minus were identified. There was a nuanced view on the change processes and their effects. The change processes and the decisions were anchored in a democratic process with groups of employees and the union. All were clear on what demands the company had on them. They were secure in a functioning network of peers and their immediate superior. On their own education, most were as a whole satisfied, but in need of more training and talked of lifelong learning. They considered their work demanding and lonely, with a need both to be manager and leader. A shared leadership could mean doing a better job. There is a need for education and training as a manager and leader as well as the opportunity to discuss with peers.     

Marxism as a capitalist tool

Just as the two sides in the Cold War agreed that Capitalism and Communism were “the” two alternatives, so the two sides in the intellectual Great Debate agreed on a common framing of questions with the defenders of capitalism taking one side and Marxists taking the other. From the viewpoint of economic democracy (e.g., a labor-managed market economy), this late Great Debate between capitalism and socialism was as misframed as would be an antebellum Great Debate between the private or public ownership of slaves. The Great Debate between capitalism and socialism is now in the dustbin of intellectual history, but Marxism still plays an important role in sustaining the misframing of the questions so that the defenders of the present employment system do not have to face the real questions that separate that system from a system of economic democracy. In that sense, Marxism has become the ultimate capitalist tool.     

Gender and Employment Restructuring in British National Health Service Manual Work

While managerial initiatives to cut costs through increased labour flexibility are widespread, we have limited knowledge of the micro-politics of gender and contemporary restructuring at the local level: of the processes and dynamics through which flexibility and other initiatives reconstitute or transform gendered patterns of work and advantage in specific workplaces. This case study, based upon extensive interviewing, observation, and examination of documentary materials, examines the gender implications of several different types of restructuring initiatives in three types of manual work at two hospitals in an NHS Trust. On the whole, it finds that restructuring created more continuity than change in gendered patterns of work and advantage in the two sites. The case study suggests, first, that employment restructuring incorporates elements of structural, institutional and interactive gendering; managers use women's subordination in the workplace and labour markets to achieve their objectives, and male workers actively resist loss of their advantages. Second, it suggests that competitive tendering exercises have a disproportionately negative impact upon women workers, while functional flexibility initiatives are somewhat more positive. Third, the case study suggests union resistance to restructuring is limited and particularly circumscribed in relation to restructuring of women's jobs.     

Infant Manual Exploration of Objects,Surfaces, and Their Interrelations

Although a considerable amount is known about the development of object manipulation during the 1st year, less is known about how infants manually explore surfaces and relate objects to surfaces. To address these issues, 60 infants (20 each at 6, 8, and 10 months of age) were presented hard and soft objects on tabletop surfaces, which varied in terms of their material properties. Tabletop surfaces were either liquid, discontinuous, flexible, or rigid. Results indicated that infants explored the objects, surfaces, and their interactions selectively, tailoring their manual actions to the material properties of the objects or surfaces. In some instances, selectivity increased with age. The implications of these findings for understanding the origins of problem solving and tool use are considered.     

Normative Embourgeoisement among Manual Workers: a Reexamination Using Longitudinal Data*

This research examines the validity of the normative embourgeoisement perspective—the familiar notion that manual workers are becoming middle class in their cognitive orientations. Data are used from ten national surveys between 1956 and 1976 to examine changes in middle class identification among manual and nonmanual workers. Contrary to some earlier research which examined only two time periods, the results indicate that middle class identification among manual workers has increased over time at a faster rate than among nonmanual workers. Thus, there is greater similarity between manuals and nonmanuals in their middle class identification. Contrary to the arguments of normative embourgeoisement, however, the socioeconomic status (i.e., education, income, and occupational prestige) gains of manuals relative to nonmanuals do not account for this increased similarity. The research shows the need to apply longitudinal tests to dynamic theoretical perspectives, and the potential problems involved in such tests when only two periods are examined.