国际教育领域学习投入度研究的焦点与转向

文章以Web of Science数据库2010~2020年收录的学习投入度方面的1355条文献数据为样本,通过知识图谱进行可视化分析,探究国际教育领域学习投入度研究的焦点与未来转向,结果发现:国际教育领域学习投入度研究主要围绕学习投入度内涵分析和本质探索、学习投入度作用机制的实证研究、提升学习投入度的方式和路径探究、学习投入度的测量和评估四个焦点问题;随着学习科学、脑科学、智能技术等的兴起,学习投入度研究将转向寻求学习投入度研究的跨学科与本土化平衡、人工智能技术赋能学习投入度的研究、重视学习投入度多源数据分析及其影响因素研究等三个方面。研究有助于从整体上了解教育领域学习投入度的国际进展和前沿趋势,以期为我国教育领域的学习投入度创新发展提供参考。     

扎根理论视角下的宋城景区游客感知研究

本研究以携程网上宋城景区的游客在线评论为研究样本,结合扎根理论与NVivo研究方法,提取六个核心编码旅游吸引物、景区管理、景区服务、景区环境、服务设施、游客体验来分析智慧景区建设中游客感知情况,从智慧管理、智慧服务、智慧体验、智慧营销、智慧交通和设施等五个方面优化调控,赋予景区文化旅游新内涵,促进智慧景区提升文旅融合水平。文化需求是旅游的内在动因,旅游过程中游客更加重视文化体验和享受,旅游景区的文化古韵、人文风情、传统特色等,都可以发挥文化的驱动力。     

Lipoprotein (A): Better assessor of coronary heart disease risk in south Indian population

In an attempt to search for risk factors which can explain the increasing prevalence of coronary heart disease (CHD) in Indian population, we conducted a case-control study to assess the association of Lipoprotein (a)(Lp(a)) with CHD. One hundred and fifty one consecutive patients with clinical and angiographic evidence of CHD and forty-nine healthy controls were drawn for the study. Triglycerides, very low density cholesterol (VLDL-C), total cholesterol (total-C)/high density cholesterol (HDL-C) ratio, low density cholesterol (LDL-C)/HDL cholesterol ratio and Lp(a) were found to be higher in patients than controls. In female sex and in those with family history of CHD, higher total and LDL cholesterol levels were observed to be associated with higher Lp(a) levels. Lp(a) levels were also found to be higher in triple vessel disease than other vessel disease patients. Significant difference in Lp(a) levels were observed between normal coronaries vs. single and triple vessel disease(P<0.05) and also between single vs. double and triple vessel disease (P<0.01).Lp(a) levels correlated positively with vessel severity(P<0.005). Lp(a) levels >25 mg/dl were associated with coronary heart disease (Odds ratio 1.98 P<0.05 95% CI 0.007–1.18). Our findings suggest a cut-off level of 25mg/dl for determination of risk of CHD. Studies from different areas involving larger sample size are needed to confirm the findings of the present study.     

Edidence for oxidant injury in patients with postdiarrhoeal acute renal failure

Oxygen free radicals have been implicated in the pathogenesis of ischaemic acute renal failure (ARF). The evidence for this is mainly drawn from studies on experimental models. There are no such studies in postdiarrhoeal ARF, which is common in India and forms an ideal human model of ischaemia-reperfusion injury to the kidney, to confirm the observations made, in experimental models. 12 patients with postdiarrhoeal ARF and 15 healthy volunteers were included in the study. In patients with ARF, plasma lipid peroxides (LPO), superoxide dismutase (SOD), plasma iron and plasma ferritin were significantly increased when compared to controls. Plasma glutathione peroxidase levels were significantly lower in the patients with postdiarrhoeal ARF. All these changes persisted at the end of one week. The results of the study strongly suggest the role of reactive oxygen species in the production of postdiarrhoeal acute renal failure as a result of ischaemia-reperfusion injury that occurs in patients with diarrhoeal illness on fluid replacement therapy. This study helps in providing the markers to monitor antioxidant therapy as a preventive as well as therapeutic measure in cases of postdiarrhoeal acute renal failure.     

Catalytic antibodies: Concept and promise

While chemistry provides the framework for understanding the structure and function of biomolecules, the immune system provides a highly evolved natural process to generate one class of complex biomolecules-the antibodies. A combination of the two could be exploited to generate new classes of molecules with novel functions. Indeed, one example of this productive interplay is the generation of catalytic antibodies or abzymes. A catalytic antibody is a sort of natural artificial enzyme — it is a natural protein synthesized by the usual biological processes and is intended to catalyze a reaction for which no real enzyme is available. The essential idea is to raise antibodies to a molecule considered to mimic the transition state intermediate of a reaction that is to be catalyzed i.e., a molecule resembling a strained structure intermediate between the substrate and product, believed to occur in the reaction pathway. The hope is that some of the antibodies produced will happen to possess groups capable of promoting the reaction.     

便为齐安民,何必归故丘——苏东坡黄州贬滴文化现象探微

苏东坡被贬黄州,留下了种种神奇奥秘的文化现象话题。是神宗皇帝袒护他而编管黄州,是黄州的神奇山水、风月、古迹、仙居,铸就了苏东坡,黄州成为他一生中最重要的人生驿站。他“经历了一次整体意义上的脱胎换骨”,把种种深厚的历史意味和人生意味投注给黄州。黄州成为东坡文化发祥地、赤壁文化发祥地。黄州成全了苏东坡,苏东坡也成全了黄州。     

Platelet mono amine oxidase and plasma dopamine beta hydroxylase activity in patients with Schizophrenia

The activity of monoamine oxidase in platelets and of dopamine beta hydroxylase in plasma was determined in patients with schizophrenia. The activity of both the enzymes was found to be considerably decreased in patients with schizophrenia when compared to the levels noted in healthy subjects.     

抚州市山洪灾害特性分析

根据抚州市的地理特性和收集的长系列水文资料,研究山洪灾害的成因、类型、范围、特点,提出预防山洪灾害的对策,做好雨水情站网而设级防洪灾害预警、报报。     

复杂科学管理视角:企业创新机理研究

在介绍复杂科学管理理论的基础上,分析了企业创新的复杂性,运用复杂科学管理理论阐释了企业创新机理,认为:正统系统与影子系统交互作用是创新的根本机制、随机涨落是创新的诱因、自组织“双环”学习是创新的基础和前提、新资源整合是提高创新能力的重要途径。