陆地棉F_2代单株选择的主成分分析     

王巧玲  李哲 《河南职业技术师范学院学报》2011,(5):10-15

以抗虫棉品种和非抗虫棉杂交,在选择的条件下对F2代单株性状采用主成分分析的方法,就综合农艺性状对产量性状的影响进行了研究.结果表明：前5个主成分因子累积方差贡献率达74.95%,基本反映遗传信息.各主成分分析结果依次为：结铃性因子、形态因子、铃重因子、衣分因子、营养生长因子.依据主成分评价,较为理想的杂交F2代抗虫棉单株应是第1主成分较大,第2主成分适中的品种,即以果节数、果枝数和结铃数多,果枝夹角、株高和铃重适中的类型.通过5个主成分的总得分,构建出新的一个F2代单株选择指数,可以此作为F2代单株选择的依据.  相似文献   

从NBA透视美国文化     

曾辰 《绥化学院学报》2011,(4):79-81

对于文化的定义是丰富多彩的。它包括文学、艺术、音乐、历史,或是宗教信仰,传统习俗等。而体育文化作为风俗习惯的一部分,从一个层面反映了一个国家的文化,我们发现,作为世界范围内影响力最大的体育联盟的NBA,生动的反映了美国文化三个特征——多元性、侵略性和个体性。  相似文献   

A Case of Generativity in a Culturally and Linguistically Complex English Language Arts Classroom     

Allison Skerrett 《Changing English: An International Journal of English Teaching》2011,18(1):85-97

This article examines an ESL English language arts teacher’s conceptions of linguistic diversity, literacy learning and her role as teacher in a culturally and linguistically complex classroom. It further examines her processes of learning about, and developing curricular and pedagogical innovations to meet, her students’ learning needs. The successes and paradoxes of, as well as constraints to, those efforts are explored. The paper uses Ball’s theory of generativity and recent research on effective English language arts instruction in culturally and linguistically complex classrooms to facilitate analysis. It offers some implications for teachers’ development of generativity for teaching culturally and linguistically diverse students.  相似文献   

The Perceptions of Administrators Concerning the One Florida Initiative     

Adriel A. Hilton  ;Patricia A.Green-Powell  ;Crystal L. Joseph  ;Linda G. Knight 《美中教育评论》2011,(2):233-238

The purpose of this study was to discover the perceptions of Florida law school administrators on the impact of the OFI （one Florida initiative） and the addition of two MSI （minority serving institution） law schools on diversity in Florida＇s legal profession. This research explored the impact of Governor Bush＇s EO （executive order） on diversity within the SUS （state university system） of Florida law schools. Further, this study examined the impact of the creation of two MSI law schools after implementation of the OFI, as perceived by the administrators. The concept of CRT （critical race theory） provides modern legal debates outlining the usefulness of historical civil rights policies in opinionated climates. This study will examine the role of CRT in relation to affirmative action and desegregation case law. CRT forms the framework for examining the impact of the creation of two MSI law schools in the state of Florida. In conclusion, this study found that minority representation in law schools has improved in Florida as a result of the OFI as well as the addition of two MSI law schools. Black representation, however, continues to lag behind other races, particularly the Hispanic population. This study concluded that the OFI has helped improve minority representation in the legal profession.  相似文献   

植物组织培养虚拟实验室的构建     

沈洁  关国元  许云华 《连云港师范高等专科学校学报》2011,(3):96-97

文章运用Flash技术构建了多场景式实时交互的植物组织培养虚拟实验室。所开发的网络虚拟实验,可以对实验过程进行完整展现,使学生熟悉实验仪器、环境,掌握实验步骤,起到良好的辅助实验教学的目的。  相似文献   

“一喉两歌”读《长恨》     

尚继武 《连云港师范高等专科学校学报》2011,(4):4-7

《长恨歌》在创作心态、表达方式、情感指向、审美情趣乃至诗学结构等方面,具有＂一喉两歌＂的艺术特色及其带来的内蕴丰腴的艺术效果,不仅丰富了读者的审美感受,而且深刻影响了读者对《长恨歌》主旨的多样性解读。  相似文献   

南京将军山地区蜻蜓目昆虫区系分析及多样性研究     

虞蔚岩  李朝晖  周珺  袁晓静  杨霞 《南京晓庄学院学报》2011,(6):77-79

作者于2005—2010年对南京将军山地区蜻蜓资源进行了初步的调查,并且采集了一定数量的标本,通过对采集标本的鉴定和分类,初步确定将军山地区蜻蜓目昆虫共计24种,隶属于6科17属．其区系组成的特点是：东洋成分占优势,有15种,约占总数的62．5％;在中国地理分布中明显偏向华中区,在采到的24种标本中华中区占有20种,约占总数的83．33％．蜻蜓的多样性指数为2．9298,均匀度指数为0．9219,优势度指数为0．4486,优势集中性指数为0．0774．  相似文献   

Orienting Schools Toward Equity: Subgroup Accountability Pressure and School-Level Responses     

Rachel Garver 《The Educational forum》2017,81(2):160-174

Abstract

This article examines school-level responses to subgroup accountability pressure through an ethnographic case study of a school cited for failing to make adequate yearly progress for student subgroups. Concerns about the calculations and measures used to derive the citation and reservations about acting on accountability data delegitimized the citation and rendered the identified subgroups irrelevant to daily practice. Under district guidance, compliance with subgroup accountability was independent of the school's internal efforts to promote equity.  相似文献   

Negotiating queer and religious identities in higher education: queering ‘progression’ in the ‘university experience’     

Emily Falconer 《British Journal of Sociology of Education》2017,38(6):782-797

This article addresses the negotiation of ‘queer religious’ student identities in UK higher education. The ‘university experience’ has generally been characterised as a period of intense transformation and self-exploration, with complex and overlapping personal and social influences significantly shaping educational spaces, subjects and subjectivities. Engaging with ideas about progressive tolerance and becoming, often contrasted against ‘backwards’ religious homophobia as a sentiment/space/subject ‘outside’ education, this article follows the experiences and expectations of queer Christian students. In asking whether notions of ‘queering higher education’ (Rumens 2014 Rumens, N. 2014. “Queer Business: Towards Queering the Purpose of the Business School.” In The Entrepreneurial University: Public Engagements, Intersecting Impacts, edited by Y. Taylor, 82–104. Basingstoke: Palgrave Macmillan.[Crossref] , [Google Scholar]) ‘fit’ with queer-identifying religious youth, the article explores how educational experiences are narrated and made sense of as ‘progressive’. Educational transitions allow (some) sexual-religious subjects to negotiate identities more freely, albeit with ongoing constraints. Yet perceptions of what, where and who is deemed ‘progressive’ and ‘backwards’ with regard to sexuality and religion need to be met with caution, where the ‘university experience’ can shape and shake sexual-religious identity.  相似文献   

植物生理学实验教学改革探索   总被引：6，自引：4，他引：6  

陶懿伟  史益敏  姚雷  华正荣 《实验室研究与探索》2004,23(7):72-74

对以往植物生理学实验教学中存在的问题，从教学观念的改变等四个方面进行了探讨与改革，实验教学质量有明显提高，取得了一定的成效。  相似文献