Effects of Individualized Instruction on Control Expectancy: A Field Test

Abstract

This study was conducted in order to determine whether or not one semester of individualized instruction is enough time to create in students an increased sense of being able to control payoffs in life and to lead students to develop a more realistic appraisal of their ability to control payoffs in an academic environment. Paradoxically, the converse may occur. When first confronted with a success-oriented instructional process and opportunities for self-pacing, students with failure histories may become more external, anxious, or uncertain. In order to examine these notions, a sample of 126 educationally deficient students who were beginning their first semester of study in a community college were selected from 18 different sections of math, English, and history and tested twice—once at the beginning of the term and again late in the term just prior to finals.     

中德学生数学建模能力水平的比较分析——以中国上海和德国巴登符腾堡州学生为例

近期参照的数学建模能力水平分析框架,对中国上海以及德国巴州的一千余名9～11年级学生进行实验研究.结果表明,中德学生的数学建模能力的平均水平非常接近,但是从各个不同的能力水平看,两国学生的成绩存在着一定的差异;另外发现学生的数学建模能力随着年级的升高也不断发展.透过结果发现,中学生数学建模能力薄弱,上海学生的基本技能有滑坡倾向;另外需把握开展数学建模教学的最佳时机.     

Das MINERVA-Projekt: Datenbankselektion für Peer-to-Peer-Websuche

In diesem Artikel wird MINERVA pr?sentiert, eine prototypische Implementierung einer verteilten Suchmaschine basierend auf einer Peer-to-Peer (P2P)-Architektur. MINERVA setzt auf die in der P2P-Welt verbreitete Technik verteilter Hash-Tabellen auf und benutzt diese zum Aufbau eines verteilten Verzeichnisses. Peers in unserem Ansatz entsprechen v?llig autonomen Benutzern mit ihren lokalen Suchm"oglichkeiten, die bereit sind, ihr lokales Wissen und ihre lokalen Suchm?glichkeiten im Rahmen einer Kollaboration zur Verfügung zu stellen. Wir formalisieren unsere Systemarchitektur und beschreiben das zentrale Problem einer effizienten Suche nach vielversprechenden Peers für eine konkrete Anfrage innerhalb des Verbundes. Wir greifen dabei auf existierende Methoden zurück and passen diese an unseren Systemkontext an. Wir pr?sentieren Experimente auf realen Daten, die verschiedene dieser Ans?tze vergleichen. Diese Experimente zeigen, dass die Qualit?t der Ans?tze variiert und untermauern damit die Wichtigkeit und den Einfluss einer leistungsstarken Methode zur Auswahl guter Datenbanken. Unsere Experimente deuten an, dass eine geringe Anzahl sorgf?ltig ausgew?hlter Datenbanken typischerweise bereits einen Gro?teil aller relevanten Ergebnisse des Gesamtsystems liefert.     

More than Just Worksheets?: A Study of the Confidence of Newly Qualified Teachers of English in Teaching Personal, Social and Health Education in Secondary Schools

This paper addresses concerns regarding the preparedness of newly qualified teachers to deliver Personal, Social and Health Education (PSHE) in the United Kingdom in relation to the training received during Initial Teacher Education and through early Continuing Professional Development. The paper is situated not only within a context where OfSTED has questioned the adequacy of some non-specialist PSHE teachers but also one where, due to a range of social and health concerns centred on young people, schools and teachers are being expected to play an increasingly important role in the social and health education of their pupils. As such, PSHE is increasingly seen as important across all curriculum areas. This paper relates specifically to the confidence of trainee and newly qualified teachers of English in teaching PSHE in secondary schools in the United Kingdom. Drawing on questionnaire data collected from recent Professional Graduate Certificate in Education graduates, the paper suggests that trainee and newly qualified teachers have the skills and knowledge drawn from their main subject (English) to deliver PSHE; however, many lack confidence and awareness to acknowledge these skills. The paper suggests that this situation may be addressed through increased opportunity to deliver and receive feedback on PSHE teaching during initial teacher training.     

Differing expectations: an account of home and school factors affecting EAL learners from Arabic-speaking backgrounds

This article considers research from a preliminary study of Libyan children's accounts of their experience learning English as an additional language (EAL) within mainstream schools in the LJK. The analysis of interviews and classroom observations suggests that for equal opportunity to take place, local education authorities need to place greater emphasis on language and educational provision for newcomers to UK primary schools. In addition, there is still a communication barrier as well as a language barrier between home and school which needs to be addressed in order for children to adjust to and meet school requirements. In a similar way, parents of newly arrived children need to have clear expectations. The implications of this piece of research are extremely relevant for additional language acquisition in British schools and, in particular, for the education of newcomers whose circumstances are similar to those of the children in this study. This research also enables the voice of Arab children, as learners of the English language, to reach educators and policy makers, and empower them further in the research processes which inform British education policy.     

The Online Market for Illegal Copies of Magazines: A German Case Study

A few years ago, publishing companies started to sell digital copies of their magazines. This study investigates a consequence of this change: the increasing online trade with illegal copies. We collected data on almost 10,000 issues of German magazines that are illegally offered online. The files are distributed in a three-sided market, in which a small number of platforms bring suppliers of illegal copies, consumers, and advertisers together. The market has been growing rapidly—between 2009 and 2012 by a factor of 10. In contrast to the legal magazine market, the illegal trade mostly concerns IT and consumer electronics magazines.     

Droplet formation and shrinking in aqueous two-phase systems using a membrane emulsification method

Using a membrane emulsification method based on porous hollow-fiber membranes in combination with an aqueous two-phase system (ATPS), we are able to produce “water-in-water” droplets with narrow-dispersed size distributions. The equilibrium phases of the aqueous two-phase system polyethylene glycol-dipotassium hydrogen phosphate are used for this purpose. The droplet diameter of a given fluid system is determined by the flow rates of the continuous and disperse phase as well as the hollow fiber dimensions. When diluting the disperse phase and thus moving the ATPS system out of equilibrium, the droplet size can be further reduced in comparison to the equilibrium case. Generally, droplets formed with this method have diameters 20%–60% larger than the inner hollow fiber diameter. The new strategy of diluting the disperse phase allows the production of droplet diameter below the inner diameter of the membrane.