食品添加剂课程的教学改革与实践

为了提高食品添加剂课程的教学质量,激发学生的学习积极性,论文以食品添加剂课程教改为研究课题,针对课程教学中存在的问题,从教学内容、教学方法、教学手段、考核方法等多个方面进行了研究和实践。结果证明,教学改革效果良好,不仅有利于培养学生的学习兴趣,而且有利于提高学生分析问题与解决问题的能力。     

Socioeconomic Determinants of Health- and Food Safety-Related Risk Perceptions

Individual and societal perceptions of food-related health risks are multidimensional and complex. Social, political, psychological, and economic factors interact with technological factors and affect perceptions in complex ways. Previous research found that the significant determinants of risk perceptions include socioeconomic and behavioral variables. Most of these past results are based on two-way comparisons and factor analysis. The objective of this study was to analyze the significance of socioeconomic determinants of risk perceptions concerning health and food safety. A multivariate approach was used and the results were compared with earlier bivariate results to determine which socioeconomic predictors were robust across methods. There were two major findings in this study. The first was that the results in the multivariate models were generally consistent with earlier bivariate analysis. That is, variables such as household income, number of children, gender, age, and voting preferences were strong predictors of an individual's risk perceptions. The second result was that the gender of the respondent was the only variable found to be robust across all three classes of health and food safety issues across two time periods.     

The temporal gaze: the challenge for social theory in the context of GM food

The temporal gaze in socio-environmental theory can take many forms. Time may be added to existing approaches without disturbing the status quo of theory and methodology. Alternatively, focus may be on the time–space of socio-environmental existence or typologies constructed of the complexity of socio-environmental time. Finally, phenomena, processes and events may be conceptualized as timescapes. Through the focus on genetic modification of foods, the paper demonstrates the pertinence of this timescape perspective for social theory and socio-environmental analyses. A thorough-going temporal gaze is important because a) such reconceptualization forms an integral part of rethinking the social sciences' relationship to nature and environmental matters; b) the implications at the level of theory tend to be glossed over and ignored; and c) it is central to changing practice at the level of public and personal action. The paper thus uses a timescape perspective to set out substantive and conceptual issues that present some of social theory's challenges for the new millennium.     

食品营养与安全专业建设的思考

重新审视食品营养与安全专业的培养目标,凭借一种特有的教育资源优势,建设特色鲜明的食品营养与安全专业是一个全新的专业建设思路。构建一个特色鲜明的教学科研团队,是优化课程体系、创新教学模式的前提;而注重学生创新能力的培养,则是食品营养与安全专业建设的关键。     

“It's Just a Likelihood”: Uncertainty as Topic and Resource in Conveying “Positive” Results in an Antenatal Screening Clinic

The recognition of uncertainty as a pivotal issue for the sociology of medicine is longstanding. More recently, the widespread integration of new medical technologies into healthcare has led to a renewed analytic focus on uncertainty. However, there remains little work on the interactional manifestations of uncertainty. This article uses conversation analysis to examine how uncertainty is introduced and used in one specific setting: an antenatal screening clinic in Hong Kong. We focus on women who have received “screen positive” or higher risk results, and reflect on the ways in which uncertainty is an “essential tension” (Mazeland and ten Have 1996) in the activity of conveying these results to them. We conclude that as well as posing potential difficulties for interaction, the uncertainty of test results is also used here as an interactional resource in managing the institutionally defined category of “high risk.”     

Catching‐up or Leapfrogging in the Indian IT Service Sector: Windows of Opportunity,Path‐creating,and Moving up the Value Chain

Indian IT service firms are successfully competing with world leaders and research on the industry is emerging. Providing analysis at firm rather than industry level, this article identifies the windows of opportunity open to Indian firms, with the following findings: (i) the catching‐up process by Indian IT firms can be classified as a three‐stage ‘body shopping–offshoring–global delivery model’, comparable with the three steps in original equipment, own‐design and own‐brand manufacturing; (ii) the window of opportunity for Indian firms was primarily the techno‐economic paradigm shift, and secondarily the government's regulation and support of the industry; and (iii) Indian firms initially partially re‐invented their own path by offshoring and created their own global delivery model, gradually moving to higher value‐added services.     

建国以来党领导粮食安全工作的历史进程与基本经验

系统分析新中国成立以来我国粮食安全的历史发展进程,总结提炼党领导粮食安全工作的基本经验,对于新时期全面深化粮食领域的综合改革具有重要的现实价值。保障国家粮食安全,需要统筹社会再生产总过程,在不同时期或特定条件下,采取相机抉择的办法,确定相应的粮食安全政策。     

Understanding the link between poverty and food insecurity among children: Does the definition of poverty matter?

This paper examines the association between poverty and food insecurity among children, using two different definitions of poverty – the official poverty measure (OPM) and the new supplemental poverty measure (SPM) of the Census Bureau, which is based on a more inclusive definition of family resources and needs. Our analysis is based on data from the 2001–2011 Current Population Survey and shows that food insecurity and very low food security among children decline as income-to-needs ratio increases. The point estimates show that the associations are stronger as measured by the new supplemental measure of income-to-needs ratio than when estimated through the official measure. Statistical tests reject the hypothesis that poor households' odds of experiencing low food security are the same whether the SPM or OPM measure is used; but the tests do not reject the hypothesis when very low food security is the outcome.     

民国时期新疆和阗地区粮食减产与农业垦荒研究

民国时期和阗地方政府为解决粮食问题,曾于1938年后在全地区广泛发动民众开展垦荒活动,积极扩大粮食生产规模,但大规模垦荒使和阗地区的耕地面积过度增加,迅速打破了农业生产诸要素之间的平衡关系,使生产资源配置失衡,引起农业生态环境严重劣化,造成农作物生长条件恶化,最终导致粮食产量不但没有增加,反而下降,粮食供需矛盾更加突出,这种现象集中表现了过度垦荒对农业生产的负面影响。     

餐饮管理专业人才培养模式探析

从餐饮管理专业人才培养目标入手,提出为了实现高职高专对餐饮管理专业人才的培养目标,高职院校必须构建新的培养模式,有针对性地改革其教学体系、课程结构、教学内容、教学方法、考核体系等,以适应社会对高等技术应用型餐饮管理人才的需求,为社会培养出更多的实用型专门人才。