High School Students of Color Talk About Accusations of “Acting White”

Fordham and Ogbu (1986) have described fear of acting white as a significant factor that influenced the attitudes and often undermined the achievement of African-American students at Capital High in Washington, D.C. The present qualitative study investigated 38 relatively high-achieving African-American and Mexican-American students in various high schools, public and private, in a midwestern city. The respondents did not report avoiding academic achievement in order to avoid accusations of acting white. Most of the students we interviewed reported no loss of ethnic identity. The students felt strong resentment toward their peers' accusations of acting white and did not seem to be intimidated by the accusations, though they were bothered by the accusations. It would be useful if future research addressed the conditions under which avoidance of acting white is most likely to occur.     

Discipline in the context of development: a case of the social sciences in Malawi,Southern Africa

Changes in research production precipitated by the globalization have generally been theorized as applying across nations and disciplinary projects. This article examines the relation of discipline to research production from the situational vantage point of the developing world, specifically the Southern African country of Malawi, and from the empirical perspective of the social sciences. Evidence derives from eight months of ethnographic fieldwork conducted in Malawi in 2003 and 2004, drawing specifically from over 100 formal interviews and from analysis of historical and contemporary documents. The article finds that against depictions of academic disciplines as inflexible, arbitrary, and in need of restructuring, the case of the social sciences in Malawi demonstrates the value of distinctly disciplined expertise in problem-oriented research. This efficacy is, however, precariously dependent on the capacity of local disciplinary communities to regenerate and reproduce their expertise and compete effectively in the increasingly competitive knowledge market.

“3 1”模式计算机专业实践教学的一些探索

实践教学是高等教育的重要组成部分,是培养学生创新精神和实践能力的重要教学环节,结合上海大学"3 1"模式教学改革实践,为应对计算机技术的高速发展和学生毕业设计阶段遇到的新问题及学生毕业面临的就业新形势,文章介绍了该校计算机专业使"大三"短学期实践教学成为学生毕业设计和学生走向实际工作岗位预演的一些尝试和体会。     

A pair of two-component regulatory genes<Emphasis Type="Italic">ecr</Emphasis>A1/A2 in<Emphasis Type="Italic">S. coelicolor</Emphasis>

Two-component genes are kinds of genetic elements involved in regulation of antibiotic production inStreptomyces coelicolor. DNA microarray analysis revealed thatecrA1/A2, which mapped at distant sites fromred lucus and encode respectively the kinase and regulator, expressed coordinately with genes of Red specific biosynthetic pathway.ecrA1 andecrA2 gene-disruptive mutants were constructed using homogenotisation by reciprocal double crossover. Fermentation data showed that the undecylprodigiosin (Red) level of production was lower than that of wild-type strain. However, the change of the actinorhodin (Act) production level was not significant compared with wild type. Thus, these experiment results confirmed that the two-component systemecrA1/A2 was positive regulatory element forred gene cluster. Project (No.20172046) supported by the National Natural Foundation of China     

Improved grey-based approach for power demand forecasting

1 Introduction a Grey theory, originally developed by Deng [1], is a truly multidisciplinary and generic theory that deals with systems of deficient information. In the field of information research, light and deep colors respectively represent informatio…     

二语习得过程中的母语思维现象

母语思维在二语习得过程中是客观存在的，它对二语习得会产生正面的和负面的影响，即正迁移和负迁移。我们应该引导学生利用语言的共性来促进“正迁移”，借助母语思维来促进二语习得，进而提高目的语学习的效率。     

Schadenersatzanspruch Studierender gegen die Universit?t wegen unzureichenden Lehrveranstaltungsangebots? Anmerkungen und überlegungen zu OGH 1 Ob 142/07z

Mit dem Urteil zu 1 Ob 142/07z best?tigte der OGH die Entscheidungen der Vorinstanzen, wonach die Klage eines Studierenden gegen eine Universit?t auf Feststellung, dass die beklagte Partei der klagenden Partei für s?mtliche aus der Unterlassung des Anbots von Parallellehrveranstaltungen zukünftig entstehenden Sch?den hafte, wegen fehlender Passivlegitimation abgewiesen wurde. Das H?chstgericht stellte eindeutig klar, dass "Universit?ten in Vollziehung der Studienvorschriften im Rahmen der Hoheitsverwaltung t?tig werden", weshalb ein zivilrechtlicher Anspruch gegen die Universit?t aufgrund eines zu geringen Angebots von Lehrveranstaltungen nicht in Betracht kommt und bekr?ftigte, dass die Haftung der Universit?t oder ihrer Organe für hoheitliches Handeln in Vollziehung der Studienvorschriften auch nach dem UG 2002 ausgeschlossen ist.     

1,4-二氢吡啶衍生物与DNA相互作用的荧光光谱研究

用荧光光谱研究了1,4-二氢吡啶衍生物(1,4-DHP)与小牛胸腺DNA(CT-DNA)的相互作用。结果表明,1,4-DHP衍生物分子与CT-DNA相互作用后,如其荧光显著增强,表明1,4-DHP衍生物分子嵌入到CT-DNA中,如荧光明显减弱,表明1,4-DHP衍生物分子不是以嵌入模式与CT-DNA相互作用。     

1.5-环辛二烯的催化聚合

本文研究了1.5—环辛二烯在AlCl_3或AlCl_3与和C_2H_5B_1催化下的聚合反应,并探讨了该反应的机理。     

Sex differences in mental strategies for single-digit addition in the first years of school

Abstract

Strategy use in single-digit addition is an indicator of young children’s numeracy comprehension. We investigated Danish primary students’ use of strategies in single-digit addition with interview-based assessment of how they solved 36 specific single-digit addition problems, categorised as either ‘error’, ‘counting’, ‘direct retrieval’ or ‘derived facts’. The proportional use of each strategy was analysed as multi-level functions of school age and sex. In a first study (260 interviews, 147 students) we found decreasing use of counting and increasing use of direct retrieval and derived facts through years 1–4, girls using counting substantially more and the other two strategies substantially less than boys, equal to more than 2 years’ development. Similar results appeared in a subsequent study (155 interviews, 83 students), suggesting that the pattern is pervasive in Danish primary schools. Finally, we ask whether sex differences in strategy use is generally under-reported since many studies do not explicitly address them.