理想与现实：贵州普通高校教师队伍建设研究报告

西部大开发,发展民族地区的经济需要把沉重的劳动力负担转换为强大的人力资源优势,其关键在于发展高等教育,特别是高等教育教师队伍建设更是值得关注。提升高等教育竞争力,建设高素质的高校教师队伍,是当前高等教育需要思考的问题。透视贵州省普通高校教师队伍建设的现状及存在的问题,提出应对策略,为我省高等教育的进一步发展提供了具体的政策性建议。     

浅谈导学群的服务体系和技术环节的作用

导学群新概念的提出是我省电大开放教育新模式的教学服务理念,它的运行机制是围绕学生自主学习服务体系而构建的技术环节在导学群服务体系中起着非常重要的作用。     

Assessment,Grade Level and Learning

Researchers have identified assessment as a very crucial influence on the learning strategies adopted by students. The present study carried out on Secondary 2, Secondary 4, and Junior College 2/Pre-University 3 students shows that the Singapore students did not favour the Surface Approach in their learning of English and Mathematics. The nature of the discipline and the cognitive demands of the examinations carried considerable importance for students in their choice of learning strategies. Despite the heavy emphasis on excelling in examinations, students did not rely solely on surface and achieving strategies to attain their goals.     

微波辐射合成3-氨基-1,2,4-三氮唑

在微波辐射条件下,以氨基胍重碳酸盐和甲酸为原料合成了3-氨基-1,2,4-三氮唑,反应速度比传统加热条件提高300倍,产率达到83.5%。优化后的最佳反应条件为微波输出功率为120 W,氨基胍重碳酸盐:甲酸摩尔比为1:1.25,溶剂无水乙醇为5mL,反应时间为60 s。     

层析Al2O3循环利用方案

对用于柱色谱分离的填充材料Al2O3，采用清洗、过筛、调节pH值、净化、干燥和活化处理，对获得的Al2O3进行物理性状测试和柱色谱性能研究。结果发现经过煅烧和微波辐射的Al2O3物理性状符合实验要求，对靛酚和甲基橙分离性能良好，两者之间的比移值Rf范围在8．6～9．3，可以采用该工艺对Al2O3进行循环利用。     

镍-磷-氧化铁纳米复合材料镀层的制备及其性能研究

采用复合化学镀方法制备了镍-磷-氧化铁纳米复合材料镀层。通过孔隙率、耐腐蚀性、硬度、耐磨性等性质试验,结果表明:纳米复合镀层致密性、耐腐蚀性和耐磨性等均优于A3钢片,甚至优于Ni-P镀层。     

基于P2P技术的网格资源管理方法

网格计算的关键技术是资源管理,如何有效地对网格资源进行管理调度是一个网格系统是否可用的关键问题。基于网格资源的特点,文本试图在网格环境中引入对等思想,利用P2P技术来有效地管理动态的网格计算资源。     

虫媒登革病毒的研究——Ⅱ.登革病毒非结构蛋白NS1的纯化、鉴定及其在临床检测应用

本文从纯化Den2 NS1,Mab入手,自制了Mab亲和层析系统,从感染Den2的细胞膜中,分离提取了天然的Den 2 NS1双体,比较其NGC株与我国地方株(H-87)NS1的理化性质及组成,并对某些重要的生物学性质进行了综合性研究。同时,利用上述研究结果建立了检测DF病人血清特异NS1抗体的新方法,探索其协助临床诊断及研究的可能性。     

Thermodynamic Analysis and Comparison on Low Temperature CO_2-NH_3 Cascade Refrigeration Cycle

Intheapplicationsofindustrialandcommercialrefrig erationsystem ,iftherequiredrefrigerationtemperatureisverylow ,theconventionalvaporcompressionsystemisdiffi culttomeettherequirementbecausewhenthedifferencebe tweentheevaporatingtemperatureandthecondensingtemper atureissohighthatitishardtofindarefrigeranttomeettheneedsasthecondensingpressureisnottoohighandtheevap oratingpressureisnottoolow .Whentherefrigeratingtemper atureisverylow ,thecascaderefrigerationcycleissuitabletobeused .Itcannotonlysat…     

Making sense of learner and learning Big Data: reviewing five years of Data Wrangling at the Open University UK

Most distance learning institutions collect vast amounts of learning data. Making sense of this ‘Big Data’ can be a challenge, in particular when data are stored at different data warehouses and require advanced statistical skills to interpret complex patterns of data. As a leading institute on learning analytics, the Open University UK instigated in 2012 a Data Wrangling initiative. This provided every Faculty with a dedicated academic with expertise data analysis and whose task is to provide strategic, pedagogical and sense-making advice to staff and senior management. Given substantial changes within the OU (e.g. new Faculty structure, real-time dashboards, two large-scale adoptions of predictive analytics approaches, increased reliance on analytics), this embedded case study provides an in-depth review of lessons learned of five years of data wrangling. We will elaborate on the design of the new structure, its strengths and potential weaknesses, and affordances to be adopted by other institutions.