盘点网校(下)

上期校园剪影中,我们从同步教学、网上测试、答疑服务等几个方面对网校的内容和表现形式做了介绍,这期我们将就家长和同学们关心的其他几个方面继续浅谈网校。     

非接触式干网校正装置在高速纸机上的应用

非接触式干网校正装置被广泛应用在大型纸机上,可大大提高干网的使用寿命,降低运行成本。本文介绍了非接触式干网校正装置的工作原理、组成;在纸机上的实际应用、功能描述、常见故障问题分析以及日常维护。     

聚酯成形网校正的理论与实践

本文从成形网的校正原理出发,分析了影响聚酯成形网跑偏和校正效果的因素及采取的对策,据此介绍了解决岳阳造纸厂一号纸机聚酯成形网校正问题的经验。     

放学以后,你在玩什么?

“开心聊吧”由《少年电世界》与北大附中网校(http://WWW.pkushool.com)合作推出。欢迎大家登录北大附中网校,就自己感兴趣的话题发表自己的意见,或者E-mail:happybird-2008@sohu.com。请注意准确填写自己的真实姓名、详细通讯地址、邮政编码等信息,以便接收我们的奖品哦。     

盘点网校(上)

时下随便翻开一份报纸,各式各样的“网校”字眼便纷纷跃入眼帘,各个网校打出的“名校名师”、“网上听课”、“最新习题”、“在线测试”等特色服务,宛若一幅幅金字招牌,让求知若渴的学生和爱子心切的家长们“乱花渐欲迷人眼”,难以下手。     

给地球一个安宁

“开心聊吧”由《少年电世界》与北大附中网校(http://WWW.pkuschool.com)合作推出。欢迎大家登录北大附中网校,就自己感兴趣的话题发表自己的意见,或者E-mail:happybird-2008@sohu.com。请注意准确填写自己的真实姓名、详细通讯地址、邮政编码等信息,以便接收我们的奖品哦。     

3＋2高考中应不应该包括计算机考试

“开心聊吧”由《少年电世界》与北大附中网校(http://WWW.pkuschool.com)合作推出。欢迎大家登录北大附中网校,就自己感兴趣的话题发表自己的意见,或者E—mail:happybird-2008@sohu.com。请注意准确填写自己的真实姓名、详细通讯地址、邮政编码等信息,以便接收我们的奖品哦。     

我心目中的网校

“开心聊吧”由《少年电世界》与北大附中网校(http://www.pkuschool.com)合作推出。欢迎大家登录北大附中网校,就自己感兴趣的话题发表自己的意见,或者 E- mail:happybird-2008@sohu.com。请注意准确填写自己的真实姓名、详细通讯地址、邮政编码等信息,以便接收我们的奖品哦。     

快乐寒假这样过

“开心聊吧”由《少年电世界》与北大附中网校(http://www.pkuschool.com)合作推出。欢迎大家登录北大附中网校,就自己感兴趣的话题发表自己的意见,或者至E—mail:happybird—2008@sohu.com。请注意准确填写自己的真实姓名、详细通讯地址、邮政编码等信息,以便接收我们的奖品哦。     

一场游戏一场梦

“开心聊吧”由《少年电世界》与北大附中网校(http://www.pkuschool.com)合作推出。欢迎大家登录北大附中网校,就自己感兴趣的话题发表自己的意见,或者E-mail:happybird-2008@sohu.com。请注意准确填写自己的真实姓名、详细通讯地址、邮政编码等信息,以便接收我们的奖品哦。     

Differences in prevalence of tobacco use among Indian urban youth: the role of socioeconomic status

This study examined whether the distribution of tobacco use and related psychosocial risk factors among youth in urban India vary by socioeconomic status (SES). Data were derived from a cross-sectional survey of students enrolled in the 6th and 8th grades in 32 schools in Delhi and Chennai (N = 11,642). The survey was conducted in 2004, before the implementation of a program designed to prevent and reduce tobacco use (MYTRI). Mixed-effect regression models were used (a) to determine the prevalence of tobacco use among private (higher SES) and government (lower SES) school students, (b) to investigate whether certain psychosocial factors were associated with increased tobacco use, and (c) to determine how these factors varied by school type. Ever-use of multiple forms of tobacco (e.g., gutkha, bidis, and cigarettes) was more prevalent among government school students than private school students. After adjusting for city, gender, grade, and age, we found the prevalence rate for ever-use of any tobacco product to be 18.9% for government school students, compared with 12.2% for private school students (p<.01). Students in government schools scored lower than private school students on most psychosocial risk factors for tobacco use studied here, indicating higher risk. Government school students scored the lowest for refusal skills, self-efficacy, and reasons not to use tobacco. Social susceptibility to chewing tobacco and social susceptibility to smoking were strong correlates of current tobacco use among government school students. Exposure to tobacco advertising was also a strong correlate of current tobacco use for government school students but not private school students. In two large cities of India, students attending government schools are using many forms of tobacco at higher rates than private school students. The psychosocial risk profile of government school students suggests they are more vulnerable to initiation and use and to outside influences that encourage use.     

Healthy snacking in the school environment: Exploring children and mothers' perspective using projective techniques

Snacks consumed at school are an important source of energy and nutrients in children's diets. Understanding the factors that underlie children and mothers' choices of school snacks can contribute to the development of strategies to promote healthier eating patterns. In this context, the aims of the present work were: i) to explore children's conceptualization of school snacking, and ii) to identify children and mothers' perceived barriers and facilitators to healthy snacking in the school environment. Two studies with 518 children and 1183 mothers were carried out. In Study 1, children (n = 255) were asked to draw a child eating a snack at school. In Study 2, five incomplete dialogues about school snacks were presented to participants (263 children and 1183 mothers), who had to complete them using their own words. Data were analyzed using content analysis. The drawings showed that school snacking frequently occurs during the recess while children do other activities, such as playing football or other games. Fruit, sandwiches, cookies and juices were the foods and beverages most frequently included in the drawings. Responses to the dialogues enabled the identification of barriers to healthy snacking in the school environment, which were related to children's positive hedonic reaction towards unhealthy foods, the sales of unhealthy products in the school canteen, lack of time to prepare home-made snacks and mothers' perception that children can eat unhealthy snacks once in a while. In addition, the existence of a school snacking policy was mentioned as a facilitator for healthy snacking. Potential additional actions to promote healthy snacking habits in the school environment were identified.     

我国五城市学生营养午餐企业卫生状况

为了解我国部分城市学生营养午餐企业的卫生现状，按照典型调查的原则抽取我国5城市的22家企业进行了问卷调查。结果发现，5城市学生营养餐企业的卫生状况良好，但3家企业厂房布局不合理，1家企业缺乏配餐间。各企业配餐间的卫生设施不同，10家企业未设缓冲间，12家企业没有清洗消毒池，2家企业没有灭菌设施，6家企业没有空气调节装置。同时，各企业分餐人员的卫生措施情况也差别较大，其中有4家企业的学生餐从制作完成到学生食用时间间隔超过3h。仅13家企业学生餐食品留样48h。这些结果提示学生营养午餐企业的卫生工作尚需进一步完善，应加强学生营养午餐有关理论和技术的基础性研究工作，强化供餐企业内部和外部的规范化管理，政府加强引导。     

轻化工程专业教学生产实习改革

针对传统实习体制对人才培养存在的不适应性,介绍了学院采取优化办学条件以建立校内实习基地,整合社会资源以拓展校外实践场所,以学校科研基地为补充创建一体化实践教学的改革措施,以及分散、仿真实习,校内实习基地动手实践与校外参观相结合,边实习边进行理论教学等实习新模式.     

校园服装心理及现状的调查研究

为了解我国校服制度与学生着装态度之间矛盾的根本原因,从校服的品质现状和学生对待校服的心理态度、心理期待三方面进行随机抽样调查,利用电子统计软件对调查结果进行详细的研究分析。结果表明,校园服装承载着启蒙、培养和疏导青少年服装审美观念形成的重要使命,是校园文明不可缺少的重要组成部分,而校服品质现状调查结果显示,目前我国校园服装品质各方面要素指标均未能满足学生身体健康和心理发展需求,这种偏差是导致校园服装制度遭到质疑的根本原因。     

女初中生体型特征与分类

对219名初中女生进行手工人体测量,运用SPSS 13.0软件对测量数据进行统计分析,探讨了初中女生的体型特征和分类,为初中女生的服装号型设定和服装结构设计提供参考。     

我国中小学教材出版研究综述——以语文教材为主

1949年后,基于中国社会政治、文化结构的急剧变革,作为基础教育最重要的教学依据——中小学教材的发展,也呈现出鲜明的阶段特点。教材的研究也经历了兴起、受挫、恢复、繁荣几个时期。20世纪中国大陆改革开放以来,学界对中小学教材的研究成果数量逐渐增多,视角也趋于广阔,为教材出版制度的建设和完善提供了丰富的资料。本文以中小学教材特别是语文教材研究为中心,对中小学教材出版的相关研究成果内容和方法进行梳理和分析,以期为当下国内中小学语文教材研究和改革提供有益启示。     

北京中学生营养知识现况及其影响因素分析

目的:了解北京市中学生营养知识掌握现况并探讨影响因素。方法:采用整群典型抽样,抽取北京核心城区和郊县城区数所代表性中学学生,开展现场问卷调查。结果:北京市6所中学1192名学生参与问卷调查,其中初中生789人、高中生392人,男生600人(50.80%)、女生581人(49.20%),平均年龄13.72±1.58岁(最小11岁、最大19岁);中学生营养知识平均得分为59.37,初中生59.78,高中生58.53;女生61.08,男生57.71;学生对不同类别营养知识的知晓率差异显著(P<0.05);女性学生、与父母同住、父母学历高与学生营养知识得分存在正相关关系。结论:北京市中学生营养知识得分处于不及格水平,对不同知识类别的知晓度差异显著,学生在初高中阶段学习和掌握营养知识缺乏系统连贯性。学校课程设置、年级、性别、父母学历、居住状况等影响学生营养知识掌握状况。学校应考虑家庭和社会参与,衔接初高中阶段课程教学,加强系统、综合和连贯性的学生营养教育。     

The Global School Personnel Survey: a cross-country overview

Teachers and administrators are role models for students, conveyors of tobacco prevention curricula, and key opinion leaders for school tobacco control policies. School teachers and administrators have daily interaction with students and thus represent an influential group for tobacco control. Data collected by the Global School Personnel Survey between 2000 and 2005 have shown that an alarming proportion of school personnel smoke cigarettes and use other forms of tobacco. At the regional level, current cigarette smoking is between 15% and 19% among school personnel included in this report around the world. The scarcity of tobacco-free schools and the high level of smoking on school grounds by school personnel reported in this study indicate how seriously school practice and staff actions undermine the educational messages and other prevention efforts to reduce adolescent smoking prevalence. However, the majority of school personnel in most sites strongly agreed that they should receive specific training to help students avoid or stop using tobacco.     

Communities, Markets and Traditional Values: Swedish schooling in the 1990s

During the last decade the comprehensive school system in Sweden has been called into question. Recent trends - marketisation, privatisation, religious-isation, language-isation - appear to Indicate a future school system characterised by regression to a segregationist, family-reproducing type of school, with great scope for private alternatives, and a strictly subject-based school giving priority to traditional areas of knowledge, a traditional view of knowledge, a Christian foundation, a fine-tooth system of grades and a strong evaluation system. This article is written as a commentary on the current course of events, with an attempt to stress the conceivable long-term consequences.