实时专家系统及其应用研究

本文从实时性的角度出发,讨论了实时专家系统的含义,实时推理的特点及其方法并阐述了一个机器人焊接视觉跟踪监控和诊断实时专家系统。     

机器人CO2焊接视觉跟踪实时控制研究

本文在对采用ＣＣＤ摄象机正面拍摄焊接区图象并用微机进行图象处理，以及对视觉跟踪采用实时控制的必要性分析的基础上，通过实验建立了一个实用的机器人ＣＯ_２保护焊自适应控制系统。试验表明该系统能成功地避开焊接时短路过渡的干扰，获得满意的焊接区图象，满足机器人弧焊实时控制的要求．     

The global subject of precarity

ABSTRACT

This article explores the universalizing logic of precarity and precariousness in global studies discourse. Originally articulated in the work of Guy Standing and Judith Butler, this logic presupposes a possibility for a global politics of equality between precarious subjects in the North and South based on an emergent shared horizon of suffering. In a close reading of Standing and Butler, I challenge claims about equivalence by calling attention to the liberal analytics that inform their work. Drawing on a postcolonial attunement to historically constituted exclusions, I argue that precarity is better understood as a dis-ordering experience of sovereign subjectivity whose principal referent is the liberal not global subject of precarity. Globalizing the liberal subject of precarity entails the recuperation of its constitutive outside, namely the Third World, as the original site of abjection. The de-politicizing implications of attempts to universalize the subject of precarity are briefly outlined in conclusion.     

On the Contributions of Cognitive Sociology to the Sociological Study of Race

In this article, we argue for cognitive sociology as a framework for studying the sociology of race. Cognitive sociology concerns itself with classification, identity construction, meaning and collective memory and is thus centrally concerned with generic issues that apply well to racial category construction and maintenance. We, first, outline the cognitive sociology framework. We then elaborate on traditions in the sociology of race and racism that have implicit affinities to cognitive sociology. We argue that cognitive sociology provides a useful generic framework with which to look at specific issues in racial classification, the social construction of race, and to racist cognitions, while critical race theory and other sociology of race frameworks can compliment cognitive sociology by addressing issues of power and domination in cognitive frameworks.     

The Role of Innovation Characteristics and Perceived Voluntariness in the Acceptance of Information Technologies

The often paradoxical relationship between investment in information technology and gains in productivity has recently been attributed to a lack of user acceptance of information technology innovations. Diverse streams of research have attempted to explain and predict user acceptance of new information technologies. A common theme underlying these various research streams is the inclusion of the perceived characteristics of an innovation as key independent variables. Furthermore, prior research has utilized different outcomes to represent user acceptance behavior. In this paper we focus on individual's perceptions about the characteristics of the target technology as explanatory and predictive variables for acceptance behavior, and present an empirical study examining the effects of these perceptions on two frequently used outcomes in the context of the innovation represented by the World Wide Web. The two outcomes examined are initial use of an innovation and intentions to continue such use in the future, that is, to routinize technology use. Two research questions motivated and guided the study. First, are the perceptions that predict initial use the same as those that predict future use intentions? Our results confirm, as hypothesized by prior research, that innovation characteristics do explain acceptance behavior. The results further reveal that the specific characteristics that are relevant for each acceptance outcome are different. The second research question asks if perceived voluntariness plays a role in technology acceptance. Results show that external pressure has an impact on adopters' acceptance behavior. Theoretical and practical implications that follow are presented.     

Is failure to raise concerns about misconduct a breach of integrity? Researchers’ reflections on reporting misconduct

This article describes and discusses the views of researchers on the significance of raising concerns about scientific misconduct in their work environment and the reasons or circumstances that might deter them from doing so. In this exploratory qualitative research study, we conducted in-depth interviews with 33 researchers working in life sciences and medicine. They represent three seniority levels and five universities across Switzerland. A large majority of respondents in this research study argued that failure to raise concerns about scientific misconduct compromises research integrity. This is an encouraging result demonstrating that researchers try to adhere to high ethical standards. However, further interaction with respondents highlighted that this correct ethical assessment does not lead researchers to take the consequent action of raising concerns. The factors that discourage researchers from raising concerns need to be addressed at the level of research groups, institutions, and by setting a positive precedent which helps them to believe in the system’s ability to investigate concerns raised in a timely and professional manner. Training of researchers in research integrity related issues will have limited utility unless it is coupled with the creation of research culture where raising concerns is a standard practice of scientific and research activities.     

‘He enjoyed it more than I did’!: young British Sikh women negotiating safe sex in heterosexual encounters

ABSTRACT

Sex education and relationship strategy of the U.K. allows parents to withdraw their children from sex education, which has left many young people especially those from Black Minority and Ethnic communities with low or no sex education. Similarly, the government's policy environment enables faith schools to teach these subjects under the tenets of their faith. This empirical research was carried out in South-West London using 12 qualitative interviews with women and men (ages 18–20 years) discusses young women's experiences of their first sexual encounter who navigate their reputations, relationships as well as negotiate safe sex in the absence of appropriate relationships and sex education. Sex education not only brings into focus sensitivities around gender but also tensions around religion in the U.K. Evidence from the study suggests that despite the importance placed by the Indian community on maintaining virginity, young women asserted that religion and culture did not prohibit them from exploring their sexuality. In this study, the priority is to present young women's voices and experience of sexual encounters.     

Feminist Mentoring and Female Graduate Student Success: Challenging Gender Inequality in Higher Education

There has been much research on gender inequality in higher education and the benefits of mentoring. However, since mentoring has been a predominantly male experience, most research with female students focuses on advising relationships. For women, there is a significant difference between experiences of advising and mentoring with problematic effects for them. Attrition rates are high for both men and women but the causes of female attrition are unique and possibly related to their mentoring experiences. Mentoring remains largely an informal activity in most graduate departments, and due to the patriarchal nature of graduate education, it has been a predominantly male experience ( Lovitts 2001 ). In this paper, I provide an overview of the different types of advising/mentoring relationships for women in doctoral programs and the benefits of these for them. The paper concludes with a discussion of policy implications for graduate departments, suggestions for future research, and a call for developing and implementing feminist models of mentoring for all graduate students.     

Response to the COVID-19: Understanding implications of government lockdown policies

The rising number of COVID-19 cases and economic implications of lockdown measures indicate the tricky balancing act policy makers face as they implement the subsequent phases of 'unlock'. We develop a model to examine how lockdown and social distancing measures have influenced the behavioral conduct of people. The current situation highlights that policy makers need to focus on bringing awareness and social restraint among people rather than going for stringent lockdown measures. We believe this work will help the policy makers gain insights into the troubled COVID-19 times ahead, and based on the estimates, they can frame policies to navigate these wild waves in the best possible way.     

Beyond development impact: gender and care in the Pacific Seasonal Worker Programme

ABSTRACT

Close to 17,320 workers participate in the Seasonal Worker Programme, a temporary migration scheme between Australia and selected island countries in the Pacific. This article looks at the ways in which seasonal migration affects the social lives of migrants from Tonga and Vanuatu, in their households and communities. It explores the various barriers that women face as a result of this scheme, highlighting, in particular, imbalances in the gendered division of labour caused by the absence of males due to migration. It argues that focusing solely on the economic development discourse of seasonal labour programmes is problematic because it fails to take into account the normative dynamics and general context of seasonal workers. Such an approach also fails to take into consideration the rights of migrants to live with their families, and not to have to make choices that are shaped by physical separation from their families and communities. The article concludes with recommendations for policy reform that address the existing gender inequalities of seasonal worker programmes in the Pacific by putting work, care, and the everyday maintenance of the seasonal worker household at the centre of its analysis.