校长如此家访教师更有效     

张利军 《教学与管理》2019,(10)

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Membrane-integrated microfluidic device for high-resolution live cell imaging     

Epshteyn AA  Maher S  Taylor AJ  Holton AB  Borenstein JT  Cuiffi JD 《Biomicrofluidics》2011,5(4):46501-465016

The design and fabrication of a membrane-integrated microfluidic cell culture device (five layers,≤500 μm total thickness) developed for high resolution microscopy is reported here. The multi-layer device was constructed to enable membrane separated cell culture for tissue mimetic in vitro model applications and pharmacodynamic evaluation studies. The microdevice was developed via a unique combination of low profile fluidic interconnect design, substrate transfer methodology, and wet silane bonding. To demonstrate the unique high resolution imaging capability of this device, we used oil immersion microscopy to image stained nuclei and mitochondria in primary hepatocytes adhered to the incorporated membrane  相似文献   

马里兰州高技术网络：案例调查     

Zolt.  AJ 王益苓 《科学学译丛》1992,(4):46-51

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办好科技期刊 促进学会发展     

杨文志  王晓彬  张利军  李芳 《学会》2007,(6):21-28

<正>科技期刊是记载科学发展历程、发布学术成果、开展学术争鸣、传承科学文明的园地,是传播科学技术信息的载体;科技社团是科学建制的重要组织形态,是科学共同体的重要组成部分,是科学交流活动的重要组织载体。在科学建制化过程中,科技期刊与科技社团的结合,成为现代科学技术发展  相似文献   

中国科协所属全国性学会主办期刊调查研究     

张利军  王晓彬 《学会》2007,(11):53-60

<正>学会期刊的历史悠久,是学会组织中一个巨大的资源优势,是一笔巨大的财富,是学会开展学术交流等活动的坚实基础。一、全国性学会主办期刊的现状(一)期刊的基本情况  相似文献   

Bullying, violence, and risk behavior in South African school students     

Liang H  Flisher AJ  Lombard CJ 《Child abuse & neglect》2007,31(2):161-171

OBJECTIVES: To examine the prevalence of bullying behavior in adolescents from Cape Town and Durban, South Africa, and the association of these behaviors with levels of violence and risk behavior. METHOD: Five thousand and seventy-four adolescent schoolchildren in grade 8 (mean age 14.2 years) and grade 11 (mean age 17.4 years) at 72 Government schools in Cape Town and Durban, South Africa completed self-report questionnaires on participation in bullying, violent, anti-social and risk behaviors. RESULTS: Over a third (36.3%) of students were involved in bullying behavior, 8.2% as bullies, 19.3% as victims and 8.7% as bully-victims (those that are both bullied and bully others). Male students were most at risk of both perpetration and victimization, with younger boys more vulnerable to victimization. Violent and anti-social behaviors were increased in bullies, victims and bully-victims compared to controls not involved in any bullying behavior (p<.01 in all cases). Risk taking behavior was elevated for bullies and bully-victims, but for victims was largely comparable to controls. Victims were less likely to smoke than controls (odds ratio .83, p<.05). Bully-victims showed largely comparable violent, anti-social and risk taking behavior profiles to bullies. Bully-victims showed comparable suicidal ideation and smoking profiles to victims. CONCLUSIONS: Results were in keeping with Western findings. Involvement in bullying is a common problem for young South Africans. Bullying behavior can act as an indicator of violent, anti-social and risk-taking behaviors.  相似文献   

The impact of individual forms of childhood maltreatment on health behavior   总被引：2，自引：0，他引：2  

Rodgers CS  Lang AJ  Laffaye C  Satz LE  Dresselhaus TR  Stein MB 《Child abuse & neglect》2004,28(5):575-586

OBJECTIVE: This study examines the unique contribution of five types of maltreatment (sexual abuse, physical abuse, emotional abuse, physical neglect, emotional neglect) to adult health behaviors as well as the additive impact of exposure to different types of childhood maltreatment. METHOD: Two hundred and twenty-one women recruited from a VA primary care clinic completed questionnaires assessing exposure to childhood trauma and adult health behaviors. Regression models were used to test the relationship between childhood maltreatment and adult health behaviors. RESULTS: Sexual and physical abuse appear to predict a number of adverse outcomes; when other types of maltreatment are controlled, however, sexual abuse and physical abuse do not predict as many poor outcomes. In addition, sexual, physical, and emotional abuse and emotional neglect in childhood were all related to different adult health behaviors. The more types of childhood maltreatment participants were exposed to the more likely they were to have problems with substance use and risky sexual behaviors in adulthood. IMPLICATIONS: The results indicate that it is important to assess a broad maltreatment history rather than trying to relate specific types of abuse to particular adverse health behaviors or health outcomes.  相似文献   

小公鸡的红冠子     

张利军 《早期教育》1987,(10)

小公鸡长着漂亮的红冠子。他站在河边照了照:咳,多神气!怪不得鸡冠花开得美,原来是跟我学的。从此,他的头昂起来了,走路时,脚抬得好高好高,骄傲得不得了。可是,当他仔细留心兔弟弟、鹿阿姨、象伯伯时,他发现伙伴们都没有红冠子,这是为什么呢?小公鸡实在想不通。有一天,他问小白兔:“兔弟弟,你的头顶上怎么没有红冠子呢?”小白兔听了,觉得真好笑,不过他只抽了抽鼻子,回答说:“我头顶上有两只长长的耳朵,它不但漂亮,而且是我躲避敌人袭击的好帮手呢,我不需要  相似文献   

The work of Ambroise Tardieu: the first definitive description of child abuse     

Roche AJ  Fortin G  Labbé J  Brown J  Chadwick D 《Child abuse & neglect》2005,29(4):325-334

The first important monograph describing the battered child syndrome was written in 1860 by Ambroise Tardieu, a French forensic physician. Here is a translation of his article, published in the Annales d'hygiene publique et de medecine legale, with the title "Etude medico-legale sur les sevices et mauvais traitements exerces sur des enfants." The first part of his article is entirely translated. A brief summary of the 32 cases report described by Tardieu in the second part of his article is presented.  相似文献   

Teachers' education, classroom quality, and young children's academic skills: results from seven studies of preschool programs   总被引：10，自引：0，他引：10  

Early DM  Maxwell KL  Burchinal M  Alva S  Bender RH  Bryant D  Cai K  Clifford RM  Ebanks C  Griffin JA  Henry GT  Howes C  Iriondo-Perez J  Jeon HJ  Mashburn AJ  Peisner-Feinberg E  Pianta RC  Vandergrift N  Zill N 《Child development》2007,78(2):558-580

In an effort to provide high-quality preschool education, policymakers are increasingly requiring public preschool teachers to have at least a Bachelor's degree, preferably in early childhood education. Seven major studies of early care and education were used to predict classroom quality and children's academic outcomes from the educational attainment and major of teachers of 4-year-olds. The findings indicate largely null or contradictory associations, indicating that policies focused solely on increasing teachers' education will not suffice for improving classroom quality or maximizing children's academic gains. Instead, raising the effectiveness of early childhood education likely will require a broad range of professional development activities and supports targeted toward teachers' interactions with children.  相似文献