范梅南的教育机智思想对教师专业发展的启发

根据范梅南的教育学思想,教师的专业发展需要反思性教学,但更需要教育机智.教育机智是教师教育观念的生动体现,通过教育机智可以折射出教师的教育观.教师专业发展需要贯穿于整个教学过程的教育机智.     

Surgical management of gastric stump cancer： a report of 37 cases

Objective: To observe the clinicopathological characteristics of gastric stump cancer (GSC) and evaluate the benefits of radical surgery of GSC. Methods: The clinicopathological characteristics and postoperative survival time of 37 GSC patients who underwent surgery were investigated retrospectively. The survival time was compared according to the type of surgical pTMN stage. Survival curves were traced by using Kaplan-Meier methods. Results: Most GSC (32/37) was detected in patients who had received Billroth Ⅱ reconstruction after partial gastrectomy for benign gastric disease. The lesser curvature side and the suture line of anastomosis were the most frequent sites where GSC occurred (27/37). Differentiated adenocarcinoma was the dominant histopathological type (24/37). The postoperative 5-year survival rate of early stage GSC patients (n=9) was significantly higher than advanced stage GSC (n=12) (55.6% vs 16.5%, xL2=1 1.48, P＜0.01). Five-year survival rate of 21 GSC patients with radical resection were 75% (3/4) for stage Ⅰ, 60% (3/5) for stage Ⅱ, 14.2% (1/7) for stage Ⅲ, and 0% (0/5) for stage Ⅳ respectively.The median survival time of 21 GSC patients who underwent radical resection was longer than those undergoing palliative operation (43.0m vs 13.0m, xL2=36.31, P＜0.01), the median survival time of stage Ⅳ patients with radical resection was 23.8months. Conclusions: Without remote metastasis, radical resection for GSC is possible, and is an effective way to improve the prognosis of GSC. Even in stage Ⅳ GSC, radical resection can still prolong the survival time. It is necessary for the patients with benign gastric diseases who received partial gastrectomy to carry out the endoscopy follow-up, especially in patients with Billroth Ⅱ reconstruction procedure at 15-20 years.     

SiO2和聚乙烯醇双负载纳米ZnS对CO2的光催化还原反应

Nanosized photocatalyst ZnS particles supported on silica and polyvinyl alcohol was successfully prepared by complex transformation method. The photocatalytic reduction of CO2 was carried out in the presence of nanosized ZnS catalyst irradiated by a high-pressure mercury-vapor lamp to give the main products of formaldehyde and ethanol. The catalytic ability of ZnS characterized by the uptaken rate of CO2P volume in the reaction system depended upon the preparing conditions of nanosized ZnS catalysts. Decreasing the concentration of Na2S and increasing the molar ratio of oxygen in the PVA to Zn2 could result in the decreasing of the size of ZnS parti-     

梁实秋家书中的冷暖人生

将梁实秋先生定位于古典与浪漫之间，未能确切涵盖他的整个人生。文章通过对梁先生家书的解读，可以真切感知其八十余年的人生冷暖，可以更好地理解梁实秋先生的真正心境。     

Neural network approach for modification and fitting of digitized data in reverse engineering

Reverse engineering in the manufacturing field is a process in which the digitized data are obtained from an existing object model or a part of it, and then the CAD model is reconstructed. This paper presents an RBF neural network approach to modify and fit the digitized data. The centers for the RBF are selected by using the orthogonal least squares learning algorithm. A mathematically known surface is used for generating a number of samples for training the networks. The trained networks then generated a number of new points which were compared with the calculating points from the equations. Moreover, a series of practice digitizing curves are used to test the approach. The results showed that this approach is effective in modifying and fitting digitized data and generating data points to reconstruct the surface model.     

Chinese parental involvement and class-based inequality in education: the role of social networking sites

ABSTRACT

Based on an ethnographic study, this article presents the class-based disparities of Chinese parents’ usage of WeChat, the dominating social networking mobile application in China, in their educational involvement. We find that middle-class parents are the privileged ones who have exploited the use of WeChat not only as a medium for communication, but more as a mode of influence. Through WeChat, their various forms of capital are channelled to catalyse changes in their children's education. In contrast, working-class parents tend to act as absent participants in using WeChat for their educational involvement. We argue that WeChat has brought forth the consequence of widening the arena for winning or losing at the educational game for parents from different social classes. We call for corrective policies and guidelines on the usage of WeChat and other SNSs technologies in home–school dynamics.     

关于我国新闻舆论监督对策的思考

我国的新闻舆论监督虽然取得长足发展，但是目前由于受法律不健全，记者的知情权、监督权缺乏实际保障．地方保护主义严重等因素制约，影响这项工作的开展。为此，我们采取的对策应是大处着眼，小处着手，多为群众解难题，不为政府出难题，充分发挥新闻舆论监督的社会教育作用。     

关于英语专业学生听力学习策略的调查研究

听力是一种主动的、推理性的理解过程,也是基础语言技能之一。然而对于许多学生来说听力也是一种最为费时的任务,因此它需要大量的训练和实践。文章把理论和实践结合起来,对学生在听力理解中的学习策略进行了调查性研究。     

Low frequency oscillatory flow in a rotating curved pipe

INTRODUCTIONThemotionoftheflowinarotatingcurvedpipeisafundamentalproblem ,whosesolutionhaspotentialapplicationsingasturbines ,elec tricgenerators ,electricmotorsandsomeequip mentsusedinseparationprocesses.Itisimpor tanttoknowtheflowstructurecharacteristic…     

ITS-1三分量地震仪及在煤体动态力学参数测试上的应用

ITS - 1三分量地震仪是专门为恶劣环境下工程勘探而设计的 ,具有本安防爆、低功耗、高采样率和高精度等特点 ,仪器集三分量检波器于一体 ,采集数据原位数字化且原位存储 ,抗干扰能力强。文中介绍了使用该仪器配合特制震源在煤体上进行原位测试 ,利用测得的纵波、横波进行联合解析 ,求得煤体的多种动态力学参数 ,为煤炭高产高效开采提供了可靠的保障