Some recent Unesco publications

Notes and Reviews

Some recent Unesco publications     

Suitability of school textbooks for 5 to 7 year old children with colour vision deficiencies

Purpose

The aim of the present study was to determine, through colorimetric analysis, whether school textbooks for children aged 5 to 7 years contained tasks requiring normal colour vision discrimination for their resolution. In addition, the performance of a group of observers with diverse colour vision deficiencies was evaluated while conducting the tasks under analysis.

Results

Textbooks of mathematics were found to include 10% of tasks which, to an observer with colour vision deficiency, would be very difficult or impossible to solve. The level of difficulty of each task was influenced by the type and degree of colour vision deficiency and by the actual ambient illumination under which it was observed.

Conclusions

Some school textbooks need to be redesigned through an alternative use of colours and textures to take into consideration colour vision deficiencies. In view of the present findings, many Spanish editorial boards have committed to undertake these changes.     

On Some Results of Alan Baker

Alan Baker, who died on the 4th of February of this year, was born in England on the 19th of August 1939. In 1965 he defended his doctoral dissertation titled ‘Some Aspects of Diophantine Approximation’ at Trinity College Cambridge under the guidance of Harold Davenport. It is a very unusual fact that eight of his papers, including [1], which is discussed in the next section, had appeared in print before he submitted his doctoral dissertation. Baker was awarded the Fields Medal in 1970 at the International Congress of Mathematicians at Nice. Other honors he received are detailed in the Article-in-a-Box in this issue.In the present text, we will discuss his paper [1] and the ‘Baker theory of linear forms in logarithms’, which started with the series of four papers [2, 3, 4, 5] published in the British journal Mathematika. This new theory was an impressive breakthrough in the field of Diophantine approximation and we will briefly present some of its applications. For precise references to original papers, including those mentioned in the next sections, the reader is directed to the monographs [6, 7, 8, 9].     

Development of turn and turn measurement concepts in a computer-based instructional unit

This study investigated the development of turn and turn measurement concepts within a computer-based instructional unit. We collected data within two contexts, a pilot test of this unit with four third graders and a field test in two third grade classrooms. We conducted paper-and-pencil assessments, interviews, and interpretive case studies. Turns were less salient for children than forward and back motions. Students evinced a progressive construction of imagery and concepts related to turns. They gained experience with physical rotations, especially rotations of their own bodies. In parallel, they gained limited knowledge of assigning numbers to certain turns, initially by establishing benchmarks. A synthesis of these two domains — turn-as-body-motion and turn-as-numbe — constituted a critical juncture in learning about turns for some students. Some common misconceptions, such as conceptualizing angle measure as a linear distance between two rays, were not in evidence. This supports the efficacy and usefulness of instructional activities such as those employed.     

Counselling in the culturally diverse society: Some neglected variables in research

Cross-cultural research, especially in the area of counselling, has received considerable attention in the professional literature. Closer inspection of published research reveals that most often the variable of race is considered central. Some crucial cross-cultural variables have been ignored in favour of the racial factor. This paper discusses some of these conspicuous cultural factors which are relevant to the counselling process. In addition, some research-specific problems in the cultural arena of investigation are considered. The need of effective models for counselling in a culturally mosaic society such as Canada is stressed.Paper presented at the ninth IRTAC, Greece, April 1980.     

关于日本阳明学的几个特质

拟以日本幕末维新期尤其以山田方谷为代表的保幕派或协幕派阳明学者为重点考察对象,并在此基础上展开对同一时期日本阳明学基本特质的概述与阐释。在所叙述的几大特质中,有的应当属于整个日本阳明学而能显示其时代共同性的特质,如＂王朱并举、以王为重＂和＂文武并举、以文为重＂等;有的则主要属于部分日本阳明学而能显示其政治立场性的特质,如＂道术并举、以道为重＂和＂义利并举、以义为重＂等。这些特质虽皆与中国阳明学有联系,但其日本化现象却十分明显。     

Do fine motor skills contribute to early reading development?

Background

Little is known about how fine motor skills (FMS) relate to early literacy skills, especially over and above cognitive variables. Moreover, a lack of distinction between FMS, grapho‐motor and writing skills may have hampered previous work.

Method

In Germany, kindergartners (n = 144, aged 6;1) were recruited before beginning formal reading instruction and were administered a host of FMS, early reading skills and cognitive measures.

Results

Analyses indicate that FMS related less strongly than grapho‐motor skills to emergent literacy skills. Controlling for grapho‐motor and cognitive skills, FMS did not generally explain unique variance in emergent literacy skills.

Conclusions

The link between reading and motor skills is highly differential. Findings did not suggest that pure FMS played a significant role in early reading development, however, its close cousin grapho‐motor skills – even when devoid of the cognitive knowledge of letters – did.

Implications for practice

What is already known about this topic

• Fine motor skills (FMS) are considered an important school readiness indicator
• FMS play a role in cognition and language development
• Some research suggests that FMS might be important for reading

What this paper adds

• First study to look differentially at FMS and emergent literacy
• FMS was considered separately from grapho‐motor and handwriting skill
• Links between these motor skills and a broad range of emergent literacy and cognitive skills were investigated

Implications for practice and/or policy

• FMS may be important in the development of grapho‐motor skills
• Grapho‐motor skills appear, in turn, linked to reading
• Fostering children's grapho‐motor skills may be important in kindergarten

     

Some new approaches to research and development funding

Some new approaches to research and development funding, adopted by the United Kingdom's National Development Programme in Computer Assisted Learning are described. The five-year, £2.5 million National Programme, sponsored by seven Government departments, was set up in 1973 at a time of widespread concern about government R & D funding. The funding strategy of the Programme is described in the hope that it might apply to the funding of other educational innovations. Four unusual features are discussed in detail, the aim of the Programme; the role of the Programme directorate in cooperative funding; the approach to evaluation; and the emphasis on project management.The main aim of the Programme, from which all other policy and management decisions derived, was the institutionalisation of innovation. The Programme directorate, by contrast to the central staff of research councils, was active and interventive in the formulation of policy, the design and selection of projects, and their evaluation. A cooperative approach to funding was adopted which permitted projects to combine national and local interests, in an effort to avoid the over-centralisation of some of the large schools curriculum development projects in the UK and the USA, and the parochialism of some higher education research funding. A major evaluation device used in the National Programme was the midterm evaluation of projects. Projects were step-funded for one or two years in the first instance, with continued funding dependent on the outcome of the midterm evaluation. A further novel feature of the evaluation was the existence of independent educational and financial evaluation. Project management skills were considered important in the Programme, and various techniques were adopted, such as virement, to improve project management and control.     

关于周期群的若干结论

对周期群做了初步的研究,得到了周期群的若干性质和一个群是周期群的若干条件,并对周期群的结构做了初步的刻划,给出了周期群的若干等价条件.     

Some aspects of the individual-difference modelling of causal attribution

A review of some contemporary studies based on an individual-difference model of student learning is presented. The exploratory fitting of conceptual models of student learning to atypical individual-similarity data structures is discussed, and an experimental categorisation procedure for producing such structures is outlined. Insofar as the features of some established conceptual models of student learning do not fit such atypical structures, either by virtue of their conceptual parsimony, or their underlying conceptual assumptions, the fitting of a locus model to such structures is explored. It is argued that, within the student experience of learning framework, conceptual models of student learning need to incorporate such additional dimensions of variation if such models are to be employed in individual-difference studies of student learning.     

Take-home video for adult literacy

In the past, it has not been possible to teach oneself to read at home, because learners could not read the books to teach them. Videos and interactive compact discs have changed that situation and challenge current assumptions of the pedagogy of literacy. This article describes an experimental adult literacy project using video technology. The language used is English, but the basic concepts apply to any alphabetic or syllabic writing system. A half-hour cartoon video can help adults and adolescents with learning difficulties. Computer-animated cartoon graphics are attractive to look at, and simplify complex material in a clear, lively way. This video technique is also proving useful for distance learners, children, and learners of English as a second language. Methods and principles are to be extended using interactive compact discs.

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Zusammenfassung In der Vergangenheit war es nicht möglich, sich selbst in Heimarbeit lesen beizubringen, da die Lernenden die Lehrbücher nicht lesen konnten. Videos und interaktive Compact discs haben diese Situation geändert und gegenwärtige Meinungen zur Pädagogik der Alphabetisierung herausgefordert. Dieser Artikel beschreibt ein experimentelles Erwachsenenalphabetisierungsprogramm, das Videotechnologie anwendet. Arbeitssprache ist Englisch, aber das Grundkonzept gilt für jedes alphabetische oder syllabische Schreibsystem. Ein halbstündiges Zeichentrickvideo soll Erwachsenen und Jugendlichen mit Lernschwierigkeiten helfen. Computeranimierte Zeichentrickgraphiken sind attraktive Lernmittel, die komplexes Material klar und lebendig vereinfachen. Diese Videotechnik dient auch Fernlerndenden, Kindern und Lernenden mit Englisch als Zweitsprache. Methoden und Prinzipien müssen durch den Gebrauch von interaktiven Compakt Discs erweitert werden.

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Resumen Durante el pasado, no ha sido posible el autoaprendizaje de la lectura en el hogar, ya que los lectores no estaban en condiciones de leer los libros de enseñanza. Ahora, los videos y los discos compactos interactivos cambiaron esta situación, creando un desafío para los conceptos corrientes de la pedagogía de alfabetización. Este artículo describe un proyecto experimental de alfabetización de adultos mediante el uso de tecnología de video. El lenguaje utilizado es el inglés, pero los conceptos básicos son aplicables para cualquier sistema de escritura alfabética o silábica. Un video de dibujos animados de media hora de duración puede ayudar a los adultos y adolescentes con dificultades de aprendizaje. Las gráficas animadas por computadora son atractivas para el espectador y simplifican materias complejas de un modo claro y ameno. Esta técnica de video también está mostrando su utilidad para el estudio a distancia, para la instrucción de niños y para el aprendizaje del inglés como segunda lengua. Los métodos y los principios también se pueden ampliar mediante la utilización de discos compactos interactivos.

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Résumé Jusqu'à présent, il n'était pas possible d'apprendre à lire seul chez soi, puisque les apprenants ne pouvaient pas lire les manuels d'enseignement. La vidéographie et le disque compact interactif ont modifié cette situation et remettent en cause les principes courants de la pédagogie de l'alphabétisation. L'article décrit un projet expérimental d'alphabétisation des adultes qui exploite la technologie vidéo. La langue utilisée est l'anglais, mais les concepts de base peuvent être appliqués à tout système d'écriture alphabétique ou syllabique. Un dessin animé sur vidéo d'une demi-heure se propose d'aider les adultes et adolescents éprouvant des difficultés. Les graphiques animés par électronique sont agréables à regarder et illustrent de façon claire et vivante les matières complexes. Cette technique vidéo se révèle également utile pour les apprenants à distance, les enfants et pour l'enseignement de l'anglais en seconde langue. Les méthodes et principes d'utilisation de disques compact interactifs restent à développer.

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<Emphasis Type="Italic">Ureaplasma urealyticum</Emphasis>-derived lipid-associated membrane proteins introduce IL-6, IL-8, and TNF-α cytokines into human amniotic epithelial cells via Toll-like receptor 2

Objective

The purpose of this study was to determine the role of Ureaplasma urealyticum-derived lipidassociated membrane proteins (LAMPs) in the host innate immune system, specifically their effect on Toll-like receptors (TLRs).

Methods

LAMPs were derived from U. urealyticum strains, and human amniotic epithelial cells (HAECs) were isolated from healthy full-term placentas. Cytokine concentrations were determined by enzyme-linked immunosorbent assay (ELISA) and TLR2 mRNA by real-time PCR. Expression of TLR2 was confirmed by Western blotting and immunohistochemistry.

Results

LAMPs induced HAECs to produce inflammatory cytokines interleukin (IL)-6, IL-8, and tumor necrosis factor (TNF)-α. Cytokine production was reduced after blocking TLR2 using TLR2 inhibitor (anti-hTLR2-IgA).

Conclusions

LAMPs isolated from U. urealyticum induced TLR2-dependent up-regulation of inflammatory genes and cytokines in HAECs.

     

Activity of metalloproteinases and adiponectin in obese patients— a possible factor of incisional hernias after bariatric procedures

Purpose

Metalloproteinases are a key component of the pathogenesis of abdominal hernias. Obesity is considered a risk factor in herniogenesis and hernia recurrence. The aim of this study was to evaluate the serum concentrations of metalloproteinase-2 (MMP-2), MMP-9, MMP-13, and adiponectin in morbidly obese and nonoverweight controls.

Materials and methods

The participants were recruited from among patients undergoing bariatric and non-bariatric surgery and divided into two groups: I (body mass index (BMI)≥35 kg/m², n=40) and II (BMI<25 kg/m², n=30). Serum concentrations of MMP-2, MMP-9, MMP-13, and adiponectin were measured using enzyme-linked immunosorbent assay (ELISA).

Results

A statistically significant difference between groups was observed for MMP-2 concentration. The median MMP-9 concentration was higher in the obese group, but the difference was not statistically significant. Median MMP-13 concentrations did not differ between groups. Serum adiponectin concentration was insignificantly higher in the non-obese group.

Conclusions

The elevated serum MMP-2 and MMP-9 concentrations in obese individuals may be related to the higher incidence of incisional hernias in this population.

     

Contributors

Biography

Contributors     

Announcements

Announcements

Announcements     

Editorial

Editorial

Editorial     

Announcements

ANNOUNCEMENTS

Announcements     

湖南娄底方言语气词选析

本文选取娄底方言中有代表性的 10个语气词进行详细描写和对比分析 ,可以从中看出该方言语气词的两个特点 :一、有的语气词声、韵同而调异 ,凭声调差异区别语法作用 ,例如第一、二两组语气词 ;二、有的语气词在不同的句式中所表示的语气确有联系 ,但也不排除有这样的语气词 ,它们在不同句式中所表示的语气 ,似乎难以发现其有共同之处     

Editorial

Editorial Introduction

Editorial     

Introduction

International Review

Introduction