学校事故的责任分析和防范措施

学校事故是目前学校领导和教师难以回避的一个棘手问题。对学校事故应分析原因,分清责任,采取必要的防范措施,妥善处理。     

反相高效液相色谱法测定水中荧蒽

介绍用反相高效液相色谱法测定水中荧蒽的方法,采用以硅胶为基底的C18键合相作为固相吸附载体,对水中的荧蒽进行吸附保留,用二氯甲烷洗脱荧蒽,取得了很好的回收效果.采用C8色谱柱,水和甲醇作为流动相,得出H2O∶CH3OH=20∶80时分离效果最佳,其线性回归方程为Area=0.038 182 5Amount-0.333 916,相关系数为0.999 9,相对标准偏差为0.98%～5.70%,加标回收率为96.6%～98.2%,最低检出量为15.84 ng/L.实验证明,该方法简单、快速、准确,而且回收率高,重现性好.     

平行语料库检索软件SDAU-ParaConc设计与实现

当代语言研究离不开语料库,对语料库的检索需要计算机软件支持,但平行语料库检索软件数量极少,且存在不符合中国国情的情况。因此,有必要开发一款符合中国国情、适应大数据检索需求、减少语言研究中重复劳动的平行语料库检索软件。在考察现有4款平行语料库检索软件,对比分析它们各自的优势及不足后,结合中国国情及语言研究实践经验,提出了新的平行语料库检索软件SDAU-ParaConc设计理念。介绍了SDAU-ParaConc的实现方式与特点。与之前的软件对比结果表明,SDAU-ParaConc操作步骤平均简化了60%,检索效率平均提升了9.5%。     

高师地理导学研教学模式的研究与实践——地理科学国家特色专业建设创新教学模式

教学方式的改革是高校教学改革的重点.在地理科学国家特色专业建设中,遵循创新技术人才培养规律,按照建设创新型大学和培养创新型人才的要求,以加强大学生自主创新能力培养和加快高师地理教师队伍建设为目标,构建了高师地理导学研教学模式.对导学研教学模式的内涵、特点、理论基础、操作程序、教学策略等方面进行了理论和实践的探讨.     

天津教养院经营实态述论

天津教养院是北洋时期天津地方政府与当地新式绅商通力合办救济事业的典型救济机构,具有鲜明的现代特征,表现在确立现代官民合作机制,经费保障纳入地方政府责任,呈现良性经营状态。但从院民教养状况来看,重养大于重教,反映了时局危艰和传统救济方式的强大惯性。     

How do instructional designers evaluate? A qualitative study of evaluation in practice

This study employed a qualitative research design to investigate how instructional designers use evaluation in everyday design practice. While past research has examined how designers spend their time, how they generally make decisions, and expert-novice differences, little attention has been paid to use of context, input, process, or product evaluation, from the perspective of practicing designers. Based on interviews of practitioners, our findings included ten themes regarding how designers use evaluation to improve their products. While these results substantiate to some degree the claim that practitioners believe clients will not pay for formal evaluations, they also suggest that practitioners use evaluation in important but less formal ways. Other conclusions regarding the role of evaluation in design are provided and future directions for training and research are discussed.     

The effects of child maltreatment on language development

The separate effects of child neglect, abuse, and their interaction upon language development as measured by the Preschool Language Scale were examined in four groups of children (n = 79) in a quasi-experimental design. There were three groups of maltreated subjects, all drawn from a treatment center: an abused only group (n = 13), a neglected only group (n = 7), and an abused and neglected group (n = 31); a non-maltreated group (n = 28) was drawn from a day care center. Abuse, neglect, and their interaction were used to predict both auditory comprehension and verbal ability as separate criteria in two stepwise multiple regression equations, where the variance attributable to gender and mother's status on Aid to Dependent Children had been removed. Child neglect was found to predict significantly both auditory comprehension and verbal ability. Neither child abuse nor the interaction between abuse and neglect significantly predicted either dependent variable. These findings suggest that child neglect may be the critical type of maltreatment associated with language delay.