PBL教学法在内科护理学实习课中的应用

为探索临床护理带教方法,提高护理专业学生自我学习和解决问题的能力,依据以问题为基础的学习(Problem-Based Learning,PBL)教学理论,对在我科实习的16名护理本科实习生进行PBL临床带教,另16名学生进行传统带教,发现进行PBL教学后学生的综合素质-获取新知识的主动性,分析问题、解决问题的能力得到明显提高。     

《油田用加热炉化学清洗技术要求》标准的制定与应用

沈阳油田是全国最大的高凝油生产基地,在集输过程中广泛使用加热炉作为加热设备,由于介质中大量的钙、镁等离子高温下易在管道内壁析出,导致加热炉不同程度结垢状况存在,因此需要进行化学清洗除垢。为确保化学清洗的质量和安全,制定了企业技术标准,并从前期施工准备开始,到清洗系统安装、操作程序、资料录取以及验收标准等进行了规范。应用后加热炉热的热效率由以往的67.4%提高到84.7%,腐蚀率由应用前的6.34g/(m2.h)降低到2.91g/(m2.h),附加损失明显减少,解决了生产存在的难题,降低了能耗。     

Implications of rice policies for farmers: Selected South East Asian countries

Varying levels of rice selfsufficiency have been reached by the agriculture-based economies of Indonesia, Malaysia, the Philippines and Thailand. The author reviews the major agricultural policies adopted by these countries to provide adequate rice for their domestic populations. While rice production has increased, the distribution of its benefits has been poor. The need to continue rice consumption subsidies is questioned, particularly in cases when they do not benefit the target groups of poor for which they were originally intended. The author proposes a re-examination of policies, emphasizing the need to strengthen development efforts to promote both the production and consumption of other staple food crops.     

Who is left behind? Exploring the characteristics of China's broadband non-adopting families

China has made significant progress in broadband development. As of September 2018, 95% of China's population was covered by 4G networks. However, our estimates show that nearly 30% of China's families did not use broadband that year. This study attempts to investigate the characteristics of China's broadband left-behind families. Overall, consistent with the findings for other countries, families with a lower socioeconomic status are more likely to be broadband non-adopters. In the information society, older, poorer, rural and less educated families are left behind. It is recommended that the Chinese government shift from a top-down investment-driven policy to a user-centered demand-driven policy to address the digital divide.     

试析知识产品的价值形成和实现机制

传统的价值理论认为,商品的价值量取决于社会必要劳动时间,商品按照价值量相等的原则进行交换。商品的价格随商品的供求关系围绕着价值上下波动。知识产品的价值规则与此不同,它是由个别优等劳动时间决定,其价值实现是一种低价递减机制。     

流域生态补偿中的水资源准市场交易机制研究

建立起市场化水资源配置机制是解决流域水资源短缺和推动流域生态保护的最有效方法.当前,流域水资源商品的准市场化交易模式更符合我国基本国情.为此,本文对流域水资源准市场机制的内涵和机制构建进行了探讨,提出以政府规制为手段构建流域水资源准市场体系,并利用Holmtrom-Milgrom“委托——代理”模型对流域水资源准市场机制进行了建模研究,为构建流域水资源准市场机制提出了政策建议.     

“十一五”期间全国地质资料管理与服务情况分析

通过对2006-2010年全国地质资料管理情况通报分析研究,“十一五”期间,全国各级国土资源管理部门和馆藏机构开展了大量工作,全面履行依法汇交和转送工作,地质资料汇交量和馆藏量持续增长,基础设施进一步改善,全国地质资料网络服务能力日趋增强,日常服务数量持续增加,抗旱救灾应急服务成效显著。     

X荧光光谱法快速测定糙米中的镉

采用重金属镉富集装置对被测糙米进行先碳化后灰化的处理,使得被测糙米中的镉元素富集;将得到的被测糙米灰分放入样品杯中压制成被测样品,由X射线荧光分析装置进行测量,得到镉元素的信号强度,然后根据信号强度与浓度的比例关系自动计算样品中镉的含量.整个分析过程在15 mim以内,数据结果与AAS结果一致。     

Relationships in the purchasing of business to business professional services: The role of personal relationships

There has been a shift from transactional to relational exchange and relationship marketing both in the business to business and professional services contexts. This paper seeks to explore the manner in which personal relationships affect the process and outcomes of purchasing of professional business services. Specifically, it focuses on the role of the professional service providers as boundary spanners in the formation of personal relationships. These personal relationships constitute the underlying basis of long-term relationships between the purchasing and provider organizations in such complex service settings. The findings of this study demonstrate that the manner in which the boundary spanners cultivate relationships support the concept of relationship specific tasks. It extends this conception by use of the data to outline the chronological process over time Understanding the roles, function, and ultimately importance, of these relationships facilitates the identification and development of appropriate strategies to manage these relationships.