Consortial Ebook Archiving Environmental Scan

Academic libraries and consortia are spending the vast majority of their material budgets on digital content, including ebooks. A review of ebook preservation activities for the North American library consortia is provided along with a look at the major preservation services such as Portico, CLOCKSS and HathiTrust. Publishers and ebook aggregators are also examined to provide a broad environmental scan of the current ebook preservation activities and risks.     

QTL analysis for some quantitative traits in bread wheat

Quantitative trait loci (QTL) analysis was conducted in bread wheat for 14 important traits utilizing data from four different mapping populations involving different approaches of QTL analysis. Analysis for grain protein content (GPC) sug- gested that the major part of genetic variation for this trait is due to environmental interactions. In contrast, pre-harvest sprouting tolerance (PHST) was controlled mainly by main effect QTL (M-QTL) with very little genetic variation due to environmental interactions; a major QTL for PHST was detected on chromosome arm 3AL. For grain weight, one QTL each was detected on chromosome arms 1AS, 2BS and 7AS. QTL for 4 growth related traits taken together detected by different methods ranged from 37 to 40; nine QTL that were detected by single-locus as well as two-locus analyses were all M-QTL. Similarly, single-locus and two-locus QTL analyses for seven yield and yield contributing traits in two populations respectively allowed detection of 25 and 50 QTL by composite interval mapping (CIM), 16 and 25 QTL by multiple-trait composite interval mapping (MCIM) and 38 and 37 QTL by two-locus analyses. These studies should prove useful in QTL cloning and wheat improvement through marker aided selection.     

Cognitive brain potentials in kindergarten children with subtyped risks of reading retardation

Cognition-related brain responses to meaningful and meaningless figures were registered in 5-year-old kindergarten children who either had been subtyped as being at-risk of developing an L- or P-type dyslexia (LAL versus LAP) or who were not at-risk. While identifying, naming, or categorizing pictures, event-related potentials (ERP) were registered. Three cognition-related components were found: the N460, the P780, and the Slow Wave (SW). LAP-children produced weak N460 activity across tasks, whereas LAL children, and to a lesser degree, non-risk children produced robust task-dependent activity. This finding may indicate that LAP-children lack semantic input while processing the figures. P780 latencies to frequently occurring figures were found hemisphere-dependent: LAP-children showed longer latencies in the right than in the left hemisphere, whereas the distribution was reversed in the LAL and non-risk children. It was also found that the right hemisphere is generally responsible for a lion's share of the processing of figures and therefore it seems that the right hemisphere of LAP-children invests ample time in doing so. Whereas LAP-children showed largest SW amplitude differences between frequent and infrequent stimuli at posterior locations, LAL children did so at frontal locations. Assuming that the SW represents working-memory processes, it may be that working-memory in LAP-children deals with figure-relevant visual-spatial information and with figure-derived concepts in LAL children. Overall, the findings suggest that LAL and LAP represent two different groups of kindergartners at risk of dyslexia and that these differences, to some degree, fit with the presumed etiology of L- and P-type dyslexia.     

Investigating populations via penguins and their poo!

We describe an activity that introduces students to population modelling, enables them to use estimates obtained from a sample to infer back to the population, and understands how the findings are translatable via penguins and their poo!     

家用果蔬农药残留检测机设计

食品安全问题是民生问题,随着"绿色"这一概念在人们脑海里的深入,果蔬作为人们生活中不可或缺的食品,其农药残留超标问题也越来越受到大家的关注。对一些有特殊人群存在的家庭而言,农药残留超标问题确实迫在眉睫。研究和设计家用农药检测机有助于人们真正快速有效的解决果蔬农药残留问题。文章分析农药残留速测卡的特点,针对速测卡的优缺点设计一款家用农药残留速测机。     

Sexually Dimorphic Tridimensionally Preserved Pterosaurs and Their Eggs

<正>The pterosaur record is generally poor,with little information about their populations,and pterosaur eggs are even more rare,with only four isolated and flattened eggs found to date.Dr.WANG Xiaolin,Institute of Vertebrate Paleontology and Paleoanthropology(IVPP)of the Chinese Academy of Sciences(CAS),and his team revealed a new pterosaur-rich area with potentially thousands of bones,including tridimensionally preserved male and female skulls and eggs discovered together for the fi rst time in the Early Cretaceous deposit of the TurpanHami Basin,south of the Tian Shan Mountains in Xinjiang Uygur Autonomous Region,northwestern China.On June 6,the researchers reported online a population of a new sexually dimorphic pterosaur species(Hamipterus tianshanensis gen.et sp.nov.),with five exceptionally well-preserved three-dimensional eggs in Current Biology,providing new and important evidence regarding male and     

Mask-making as identity project in a high school English class: a case study

This study reports on the composing process of one student, Peta (a pseudonym), as he reflects on a significant composition he produced during a unit on identity in a 12th‐grade English class in a U. S. high school. The unit was the first thematic exploration of the year for the students and was designed to help them think about themselves as readers, writers, and individuals. The teacher's goal was to have students' engagements with literary and artistic texts serve as vehicles for developing better understandings of themselves. The study demonstrates how students' engagement with more ‘traditional’ artefacts is essentially an example of multimodality and evidences why teachers and researchers should see such work as part of the long tradition of creativity within English. It also demonstrates how such an apparently ‘traditional’ artistic approach in fact covers the same territory as that of the digital revolution, that is that multimodal ‘tools’ engage all the cultural resources of students from their domestic, community and school settings, in contrast with much typical school activity that is perceived as pointless and tedious.     

对当前我国城市少数民族流动人口问题的思考

城市少数民族流动人口问题是一个综合性的社会问题,它已经成为我国城市化进程中必须认真研究的重大课题。城市要强调民族多元文化存在的不可避免性,采取多种形式构建不同民族、不同文化互相沟通的平台;要落实国家民族平等政策,使少数民族流动人口融入城市社区化管理;要解决少数民族流动人口在城市生活中的难题,保障其合法权益;要培育各民族对祖国的认同感和凝聚力,以达到各民族之间互相包容、和谐共处、共同发展之目的。     

The Experiences of Selected Mentors: A Cross-cultural Examination of the Dyadic Relationship in School-based Mentoring

To address comprehensive program services that are self-sustaining and systemic in nature, school counselors and educational leaders have increasingly implemented school-based mentoring to impact student and school success. In this qualitative case study, we examined the experiences of 11 selected mentors and their respective dyadic relationships in school-based mentoring with at-risk elementary school students to understand ways mentors might better form closer dyadic bonds yielding longer mentoring relationships. Four metathemes emerged: (a) encouragement, (b) relating style, (c) time and presence, and (d) language nuances. Specific components within these metathemes increased both synergy in the dyad and satisfaction for the mentors. Ethnic and cultural dyad characteristics are discussed and presented via proposed effective practices for cross-cultural, cross-age mentoring.     

Improving Reading Comprehension through Holistic Intervening and Tutoring During After-School with High Risk Minority Elementary School Students

The current study took a quasi-experimental approach investigating the effect of a holistic after-school intervention, on reading comprehension measured by the Gray Oral Reading Test (GORT)-4 on at-risk students in Grade 2 through Grade 5. Analysis of Variance was used to investigate the relationship between pre- and post-intervention scores. The study showed encouraging results. The 91 student participants showed gains in their GORT-4 total scores after the intervention. Results of after-school tutoring lend support to the use of peer-tutoring in afterschool in the elementary schools. Due to the exploratory nature of the study in a single school, there are constraints on generalizability and utility of findings to other schools across the board.