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INTRODUCTION Left-handed materials (LHMs), first investigated theoretically by Veselago (1968), have received sub- stantial attention in the scientific and engineering communities. The unique properties of these meta- materials are promising for a diversity of microwave applications, such as new types of beam steerers, modulators, filters, superlens (Pendry, 2000), cou- plers and antenna radoms (Smith et al., 2004). Re- cently, a transmission line (TL) approach has been successfully in… 相似文献
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Bullying and repeated conventional transgressions in Swedish schools: How do gender and bullying roles affect students’ conceptions? 
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下载免费PDF全文 Robert Thornberg Tiziana Pozzoli Gianluca Gini Jun Sung Hong 《Psychology in the schools》2017,54(9):1189-1201
Bullying is a moral transgression. Recognizing the importance of approaching bullying from a moral perspective, the present study examines whether children's judgments and reasoning to justify their judgments differ between bullying and repeated conventional transgressions. Our study also explores differences by gender and differences among bullies, victims, and uninvolved students. Participants included 381 students from 13 elementary schools in Sweden. Findings indicate that children judge bullying as more wrong than repeated conventional transgressions; use moral reasons more frequently in their justifications about bullying than about repeated conventional transgressions; and use conventional reasons more frequently to justify their judgments on repeated conventional transgressions as compared with bullying. Female students and nonbullies judged bullying and repeated conventional transgressions as more wrong and used moral reasons more frequently in their justifications of judgments of bullying than did male students and bullies. Male students reported bullying more than did female students. Implications for practice are also discussed. 相似文献
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fixation rate and color fastness,but the Lanasol type of wool fiber used reactive dye is not so applicable to dye the soybean protein fiber.0针织工业Knittin 相似文献
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Andrew T. Knudsen 《Paedagogica Historica: International Journal of the History of Education》2016,52(5):507-524
AbstractWhen historians discuss the impact of examinations on elementary education in mid-Victorian England and Wales they typically focus on the Revised Code of 1862. The Revised Code is famous for instituting a policy of “payment-by-results” for teachers in state-supported voluntary schools. “Payment-by-results” made government grants to schools – and, by extension, for teachers’ salaries – contingent upon student attendance and pass rates in reading, writing and arithmetic. As this article emphasises, however, “payment-by-results” was not the first, or even the most significant, instance in which competitive examination was used by the state as an instrument for establishing the pedagogical fitness and salaries of teachers. Less often explored by historians is the formative role that state-mandated competitive examinations for teachers played in developing a professionally aspirant body of schoolteachers and, consequently, the schoolteachers’ later role in developing competitive examination as a broad-scale national accreditation apparatus. But while the use of competitive examinations came to shape modern British academic and professional life in fundamental ways, the strengthening effects that they had for certain occupations and institutions, such as physicians, civil servants and middle-class secondary schools, were in fact ultimately denied to state teachers and the elementary education sector generally. With the introduction of “payment-by-results” in 1862, competitive examinations were converted into an instrument that weakened rather than strengthened teachers’ professional identity and policy influence. This article explains how the nineteenth-century English state structured examinations and examination results to manipulate the professional status of teachers in order to suit state priorities during different stages of national development. This historical narrative is framed in reference to present-day examination-based reforms of teacher compensation systems such as performance-related-pay and value-added modelling. 相似文献
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ThisstoryisaboutfourFloridafirefightersnamedEverybody，Somebody，Any－bodyandNobody．Therewasanimportantjobtobedone．Everybodywasaskedtodoit．EverybodywassurethatSome－bodywoulddoit．Anybodycouldhavedoneit．ButNobodydidit．SomebodygotangrybecauseitwasEverybody＇sjob．Ev－erybodythoughtAnybodycoulddoit．NobodyrealizedthatEv－erybodywouldn＇tdoit．Itend－edupthatEverybodyblamedSomebody，whenactuallyNo－bodyblamedAnybody．参考译文：这个故事讲的是佛罗里达州的四名消防队员，他们的名字分别是… 相似文献
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This story is about four Florida fire fighters named Everybody, Somebody, Anybody and Nobody. There was an important job to be done. Everybody was asked to do it. Everybody was sure that Somebody would do 相似文献
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1.Mr Yang is rich______he is not happy.2.It's cold,_____Miss Li will close the window.3.It is usually warm_____wet in spring. 相似文献
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英语中的连词是一种虚词,在句子中不单独用作句子成分。连词按其性质可分为并列连词和从属连词。and,but,so,or就是大家所熟知的并列连词,在小学课文中接触过,也学习过。今天在这里简单地归纳总结。下面请四位连词先生作个自我介绍吧。 相似文献
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Phillip D. Tomporowski Catherine L. Davis Patricia H. Miller Jack A. Naglieri 《Educational Psychology Review》2008,20(2):111-131
Studies that examine the effects of exercise on children’s intelligence, cognition, or academic achievement were reviewed
and results were discussed in light of (a) contemporary cognitive theory development directed toward exercise, (b) recent
research demonstrating the salutary effects of exercise on adults’ cognitive functioning, and (c) studies conducted with animals
that have linked physical activity to changes in neurological development and behavior. Similar to adults, exercise facilitates
children’s executive function (i.e., processes required to select, organize, and properly initiate goal-directed actions).
Exercise may prove to be a simple, yet important, method of enhancing those aspects of children’s mental functioning central
to cognitive development.
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| Phillip D. TomporowskiEmail: |
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Sumit Bhaduri 《Journal of Science Education and Technology》2003,12(3):303-308
The article reviews the strikingly divergent viewpoints of intellectuals—scientists and non-scientists—about Science and Technology. It shows that while scientists implicitly accept the difference between Science and Technology, to non-scientists that difference is irrelevant. The most important differences between Science and Technology that lie in their relative scales, outputs and accuracy of predictions are highlighted. The complexity of and difficulty in trying to quantify the contribution of science and technology to economic growth are discussed. Views of science and technology that include their societal perceptions are recommended. 相似文献
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王松海 《初中生世界(初三物理版)》2004,(10)
Tomisacleverboy.Onhisfirstdayinschool,helearnedthreewords:I,youandshe.Theteachertaughthimhowtomakesentenceswiththosewords.Theteachersaid,“I,Iamyourteacher.(Pointingtoagirl)She,sheisyourclassmate.You,youaremystudent.”Aftersupper,Tom’sfatheraskedhimwhathehadlearnedatschool.Tomsaidatonce,“I,Iamyourteacher.(Tohismother)She,sheisyourclassmate.You,youaremystudent.”Hisfathergotangryandsaid,“I,Iamyourfather.(Tohismother)She,sheisyourmother.You,youaremyson.”Thenextmorningatschooltheteach… 相似文献
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苏程 《英语大王(小学)》2003,(12)
I was born in a city by the sea.I like the sea. The sea is beautiful;fishes in the sea are beautiful, too.Fishes are free.They can swim everywhere in the sea.When winter comes,they change places. But Some fishes don't.Sometimes I want to be a 相似文献
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ProfessorBlackwasgoingtomeethisstudentsonthenextday,sohewroteontheblackboard:“ProfessorBlackwillmeettheclasstomor-row.”Astudent,seeinghischancetodisplayhissenseofhumorafterreadingthenotice,walkedupanderasedthe“c”intheword“class”.Theprofessornoticedthelaughter,wheeledaround,walkedback,lookedatthestudent,thenatthenoticewiththe“c”erased——calmlywalkedupanderasedthe“l”in“lass”,lookedattheflabbergastedstu-dentandproceededonhisway.Class,Lass and Ass@唐亚军$河北正定三中… 相似文献
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Henk van Oort 《英语辅导》2004,(5)
Air, water andAge 9-12Time 5 minutesFocus Animal vocabularyMaterials A small beanbag,rolled-up sock or similar object (not a ball, as this will tend to roll out of reach when dropped) 相似文献
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What's in the hat?What's in the hat?A mad cat?No.A fat bat?No.A bad rat?Yes ,you've got it!A bad rat is in the hat. 相似文献
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Thereisasayingthatgoeslikethis“Timeandtidewaitfornoman．”NowIamasophomore，soIwillgraduatesophomore，soIwillgraduatefromthecollegeinJune，２００３．Iamreluctanttoleaveit．Ithasbeenmyhomeforalmostfiveyears．Iwilalwaysmissmykindteachersandfriendlyclassmates．IstillrememberthedaywhenIfirstcametoGTCFLA（formerlycalledGFLNS）．ItwasSeptembe４th，１９９８．Thatafternoonwhenthebusarrivedatthecollegegate，Ifeltmyheartwasbeatingexcitedlyandanxiously．Iwastheonlystudenttocometotheschoounacco… 相似文献
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