FULL CIRCUIT: FROM OPEN‐ TO CLOSED‐ AND BACK

Memorial University has been active in the use of educational media since its creation, and operates a public channel, initially broadcast through CBC but now on cable distribution. The author discusses the changes that have occurred over the past few years in the role of television there and describes the interactive element called PLA YBA CK, through which viewers can now access any of 1000 programmes by a telephone call to the control room. The reader is invited to consider the changes in philosophy such developments inevitably entail.     

The beginning of decoding

It is widely agreed that children recognize their first words in a different way than they later decode. One hypothesis is that sight words are recognized as wholes, another that they are recognized by parts. Two experiments were devised to compare these hypotheses. In one, children were taught a sight word accompanied by a salient extraneous cue and then tested for recognition of the word and the cue. In the other, children were taught sight words, then tested for recognition of each half of the word. The children were found to recognize the cue but not the word; they recognized one half of the word but not the other. The results support the idea that first words are recognized by selective association.     

Parental reactions to children's negative emotions: longitudinal relations to quality of children's social functioning

Relations between self-reported parental reactions to children's negative emotions (PNRs) and children's socially appropriate/problem behavior and negative emotionality were examined longitudinally. Evidence was consistent with the conclusion that relations between children's externalizing (but not internalizing) emotion and parental punitive reactions to children's negative emotions are bidirectional. Reports of PNRs generally were correlated with low quality of social functioning. In structural models, mother-reported problem behavior at ages 10-12 was at least marginally predicted from mother-reported problem behavior, children's regulation, and parental punitive or distress reactions. Moreover, parental distress and punitive reactions at ages 6-8 predicted reports of children's regulation at ages 8-10, and regulation predicted parental punitive reactions at ages 10-12. Father reports of problem behavior at ages 10-12 were predicted by earlier problem behavior and parental distress or punitive reactions; some of the relations between regulation and parental reactions were similar to those in the models for mother-reported problem behavior. Parental perceptions of their reactions were substantially correlated over 6 years. Some nonsupportive reactions declined in the early to mid-school years, but all increased into late childhood/early adolescence.     

The impact of post-literacy: A Tanzanian case study

Literacy has long been associated with commercial and political power, so that many countries have embarked on mass literacy with an assumption that socio-economic and political transformation will result. In the case of Tanzania, this is embodied in the policy of socialism and self-reliance. Tests have shown a drop in the illiteracy rate from 67 per cent in 1970 to 10 per cent in 1986, but for more than a decade economic difficulties have hindered the advance of post-literacy. A 1983 impact study shows an increase in income and political participation, and improvements in health and nutrition, but a general impact study does not reveal information as precise and useful as a specific study. The favourable impression of the 1983 study is contrasted with practical problems thrown up by investigations of the rural press, rural libraries, radio and film education, agricultural shortages, and economic constraints. These range from distribution and maintenance difficulties to political dependence, international prices and lack of marketing knowledge. There are thus many factors controlling development besides reinforcement of literacy.

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Zusammenfassung Alphabetisierung ist seit langem mit wirtschaftlicher und politischer Macht verbunden, so daß viele Länder die Massenalphabetisierung angefangen haben, in der Annahme, daß sozio-ökonomische und politische Veränderungen daraus resultieren würden. Im Falle Tansanias ist dies in der Politik des Sozialismus und self-reliance mit eingebettet. Tests haben einen Rückgang des Analphabetismus von 67 Prozent (1970) auf 10 Prozent (1986) ermittelt, aber seit mehr als einem Jahrzehnt behindern wirtschaftliche Schwierigkeiten den Ausbau der Nachalphabetisierung. Eine 1983 erstellte Impaktstudie zeigt eine Steigerung des Einkommens und der politischen Partizipation, sowie Verbesserungen in der Volksgesundheit und in der Ernährung, aber eine allgemeine Untersuchung gibt keine so genauen und nützlichen Informationen wie eine spezifische Studie. Der günstige Eindruck der 1983 erstellten Studie steht im Kontrast zu den praktischen Problemen, die durch die Untersuchungen der ländlichen Presse, der ländlichen Büchereien, der Bildung durch Radio und Film, der landwirtschaftlichen Defizite und der wirtschaftlichen Einschränkungen aufgeworfen wurden. Die Bandbreite reicht von Verteilungs- und Instandhaltungsproblemen bis zur politischen Abhängigkeit, von internationalen Preisen bis zum Mangel an Marketingwissen. Es gibt also sehr viele Faktoren, die neben der Stärkung der Alphabetisierung die Entwicklung bestimmen.

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Résumé On a longtemps associé l'alphabétisation au pouvoir commercial et politique, si bien que beaucoup de pays ont lancé des campagnes d'alphabétisation de masse, en supposant qu'il en résulterait une transformation socio-économique et politique. Dans le cas de la Tanzanie, cette attitude se reflète dans la politique de socialisme et d'indépendance. Des tests ont montré une baisse du taux d'analphabétisme de 67 pour cent en 1970 à 10 pourcent en 1986, mais, pendant plus de dix ans, des difficultés économiques ont entravé le déroulement de la postalphabétisation. Une étude d'impact menée en 1983 révèle une augmentation des revenus et de la participation politique, ainsi que des améliorations en matière de santé et de nutrition, mais une étude générale de l'impact n'apporte pas des informations aussi précises et utiles qu'une étude spécifique. L'impression favorable qui se dégage de l'étude de 1983 contraste avec les problèmes pratiques qui ont été identifiés par les recherches de la presse et des bibliothèques rurales, de la radio et des films éducatifs, des récoltes agricoles insuffisantes et des contraintes économiques. Ceux-ci vont des difficultés de distribution et de maintenance à la dépendance politique, aux prix internationaux et au manque de connaissances en marketing. Ainsi, de nombreux facteurs influencent le développement à côté du renforcement de l'alphabétisation.

     

B/S模式程序中的分布式计算应用一例

B／S模式的应用程序主要是集中式计算和处理，本简要的以实例无纸化考试系统设计，说明了在B／S模式中采用分布式计算处理的一种思路。     

The visual theology of Victorian popularizers of science. From reverent eye to chemical retina

This essay examines the use of visual images during the latter half of the nineteenth century in the work of three important popularizers of science. J. G. Wood, Richard Proctor, and Agnes Clerke skillfully used illustrations and photographs to establish their credibility as trustworthy guides to scientific, moral, and religious truths. All three worked within the natural theology tradition, despite the powerful critique of William Paley's argument from design set forth in Charles Darwin's Origin of Species (1859). Wood, Proctor, and Clerke recognized that in order to reach a popular audience with their message of divine wonder in nature, they would have to take advantage of the developing mass visual culture embodied in the new pictorial magazines, spectacles, and entertaining toys based on scientific gadgets emblematic of the reorganization of vision. But in drawing on different facets of the emerging visual culture and in looking to the images produced by the new visual technologies to find the hand of God in nature, these popularizers subtly transformed the natural theology tradition.