A case for the use of conceptual analysis in science education research     

Sami Kahn  Dana L. Zeidler 《科学教学研究杂志》2017,54(4):538-551

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Science education research thrives in an open,global community     

Dana L. Zeidler  Fouad Abd‐El‐Khalick 《科学教学研究杂志》2017,54(4):437-438

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IV. GROWTH FAILURE IN INSTITUTIONALIZED CHILDREN     

Dana E. Johnson  Megan R. Gunnar 《Monographs of the Society for Research in Child Development》2011,76(4):92-126

Children within institutional care settings experience significant global growth suppression, which is more profound in children with a higher baseline risk of growth impairment (e.g., low birth weight [LBW] infants and children exposed to alcohol in utero). Nutritional insufficiencies as well as suppression of the growth hormone–insulin‐like growth factor axis (GH‐IGF‐1) caused by social deprivation likely both contribute to the etiology of psychosocial growth failure within these settings. Their relative importance and the consequent clinical presentations probably relate to the age of the child. While catch‐up growth in height and weight are rapid when children are placed in a more nurturing environment, many factors, particularly early progression through puberty, compromise final height. Potential for growth recovery is greatest in younger children and within more nurturing environments where catch‐up in height and weight is positively correlated with caregiver sensitivity and positive regard. Growth recovery has wider implications for child well‐being than size alone, because catch‐up in height is a positive predictor of cognitive recovery as well. Even with growth recovery, persistent abnormalities of the hypothalamic‐pituitary‐adrenal system or the exacerbation of micronutrient deficiencies associated with robust catch‐up growth during critical periods of development could potentially influence or be responsible for the cognitive, behavioral, and emotional sequelae of early childhood deprivation. Findings in growth‐restricted infants and those children with psychosocial growth are similar, suggesting that children experiencing growth restriction within institutional settings may also share the risk of developing the metabolic syndrome in adulthood (obesity, Type 2 diabetes mellitus, hypertension, heart disease). Psychosocial deprivation within any caregiving environment during early life must be viewed with as much concern as any severely debilitating childhood disease.  相似文献   

Letter knowledge, phonological processing, and print knowledge: skill development in nonreading preschool children     

Molfese VJ  Modglin AA  Beswick JL  Neamon JD  Berg SA  Berg CJ  Molnar A 《Journal of learning disabilities》2006,39(4):296-305

Development of reading skills was examined in 4-year-old children from low-income homes attending a prekindergarten program. Fall to spring gains in letter identification were examined and compared with skills in phonological processing, rhyme detection, and environmental print, and with performance on a screening tool (Get Ready to Read). It was anticipated that participants might show slow skill development. However, the identification of a large group of children (n = 30) who made little or no gains in letter identification compared to their classmates (n = 27), whose gains averaged 7 letters, was not anticipated. Fall to spring gains in letter identification correlated with phonological processing, rhyme detection, environmental print, and Get Ready to Read! scores. Age and general cognitive skills influenced performance on some tasks. More knowledge of the characteristics of children who show the most variations in skill development may lead to insights on using classroom curriculum to focus on skill development.  相似文献   

《DANGEROUS》     

Von 《中学生博览》2011,(7)

当这支歌曲的旋律在耳边响起时，我总会不自觉地打起响指和着节拍摇摆身体，想要舞蹈。我喜欢这首歌和这支舞蹈营造的气氛，神秘得充满躁动，引着我们投入音乐之中，让我们正视自己内心的渴望。  相似文献   

Eric R. Scerri, The Periodic Table—Its Story and its Significance     

Kevin C. de Berg 《Science & Education》2008,17(4):457-465

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The effects of frequency of encouragement on performance during maximal exercise testing     

Andreacci JL  LeMura LM  Cohen SL  Urbansky EA  Chelland SA  Von Duvillard SP 《Journal of sports sciences》2002,20(4):345-352

The aim of this study was to determine the effects of frequency of verbal encouragement during maximal exercise testing. Twenty-eight participants (12 males, 16 females) aged 20.9 +/- 1.5 years (mean +/- s) performed a maximal exercise test (VO2max) on a treadmill without any verbal encouragement. The participants were matched according to their pre-test VO2max and placed into either a control group or one of three experimental groups. They performed a second exercise test (post-test) 1 week later. During the second test, the control group received no verbal encouragement; the 20 s (20E), 60 s (60E) and 180 s (180E) encouragement groups received verbal encouragement every 20, 60 and 180 s, respectively, beginning with stage 3 of the exercise test. Relative VO2max, exercise time, blood lactate concentration, respiratory exchange ratio (RER) and ratings of perceived exertion (RPE) were not significantly different from the first test to the second test for the control group without verbal encouragement and the 180E group that received infrequent encouragement. Post-test values were significantly higher than pre-test values for the 20E and 60E groups. The post-test values of the 20E group were significantly higher than their pre-test values for relative VO2max (P < 0.001), exercise time (P < 0.0001), blood lactate concentration (P < 0.05), RER (P < 0.01) and RPE (P < 0.0001); this was also the case for the 60E group for relative VO2max (P < 0.01), blood lactate concentration (P < 0.05), RER (P < 0.05) and RPE (P < 0.05). The results suggest that frequent verbal encouragement (every 20 s and 60 s in the present study) leads to significantly greater maximum effort in a treadmill test than when no encouragement is given or when the encouragement is infrequent (i.e. every 180 s).  相似文献   

Book reviews     

Herbert Berg  Joseph Cremona  Hadia Dajani‐Shakeel  Michael Gervers  Colin Smith  Heather L. Ecker 《Al-Masaq: Islam & the Medieval Mediterranean》1994,7(1):279-331

Mir, Mustansir. Verbal Idioms of the Qur'ān. (Michigan Series on the Middle East, no. I). Ann Arbon University of Michigan, 1989. xxi+378 pp., glossary; US$ 21.95 (paperback).

Fiotini, Stanley and Mallia‐Milanes, Victor, eds. Malta. A Case Study in International Cross‐Currents. Proceedings of the First International Colloquium on the History of the Central Mediterranean held at the University of Malta, 13–17 December 1989. Msida: Malta University Publications, 1991. xxii+300pp. 17 plates, 8 text figures. M£5.

Bellamy, James A. ed. Studies in Near Eastern Culture and History in Memory of Ernest T. Abdel‐Massih. (Michigan Series on the Middle East, no. 2). Ann Arbor: The University of Michigan, 1990. x+225pp.

Dajani‐Shakeel, Hadia and Messier, Ronald A. eds. The Jihād and its Times, dedicated to Andrew Stefan Ehrenkreutz. Ann Arbor: Center for Near Eastern and North African Studies, The University of Michigan, 1991. iii+135pp.

Minorités religieuses dans l'Espagne médiévale. (Nos. 63–64 of Revue du Monde Musulman et de la Méditerranée). Aix‐en‐Provence: Édisud, 1992. FF 160.

Burckhardt, Titus. Fez, City of Islam. Translated by William Stoddart. Cambridge: Islamic Texts Society, 1992. 175pp. 58pl.

Jayyusi, Salma Kh., ed. The Legacy of Muslim Spain. Leiden: Brill, 1992. (Handbuch der Orientalistik, Erste Abteilung, The Near and Middle East, zwolfter Band), xix+1098 pp. 6 maps; 27 pages of colour and black and white illustrations. Hfl. 450.

Stetkevych, Jaroslav. The Zephyrs of Najd: The Poetics of Nostalgia in the Classical Arabic Nasib. Chicago: University of Chicago Press, 1993. xii+326pp.

Corbin, Henry. History of Islamic Philosophy. London: Kegan Paul International/Islamic Publications for The Institute of Ismaili Studies, 1993. xvii+445pp. £55.

Burrell, David B., C.S.C. Freedom and Creation in Three Traditions. Notre Dame, Indiana: University of Notre Dame Press, 1993. xi, 225 pp. Cloth $29.95; paper $13.95.

Köprülü, Mehmed Fuad. Islam in Anatolia after the Turkish Invasion. Translated and edited by Gary Leiser. Salt Lake City: University of Utah Press, 1993. xviii, 141pp.

Stetkevych, Suzanne Pinckney. The Mute Immortals Speak: Pre‐Islamic Poetry and the Poetics of Ritual (Myth and Poetics. Gen. ed. Gregory Nagy). Ithaca and London: Cornell University Press, 1993. xvi, 334pp.; appendix of Arabic texts.

L'Expulsió dels Moriscos. Conseqüències en el món islàmic i el món cristià. Sant Caries de la Ràpita 5–9 de desembre de 1990. Barcelona: Generalitat de Catalunya, Departament de Cultura, 1994. 418pp.

Agius, Dionisius A. and Hitchcock, Richard, eds. The Arab Influence in Medieval Europe (Folia Scholastica Mediterranean Reading: Ithaca Press, 1994. 167pp. £30.

Davidson, Olga M. Poet and Hero in the Persian Book of Kings (Myth and Poetics. Gen. ed. Gregory Nagy). Ithaca and London: Cornell University Press, 1994. xi, 197pp.  相似文献   

Scientific Realism and the Colours of Dinosaurs     

Dana Tulodziecki 《Metascience》2008,17(2):323-326

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The presentation of gas properties in chemistry textbooks and as reported by science teachers     

Kevin C. De Berg  David F. Treagust 《科学教学研究杂志》1993,30(8):871-882

The presentation of gas properties in terms of the qualitative–quantitative mode and gas law sequence is examined by means of an analysis of 14 chemistry textbooks used in Australian secondary schools and of questionnaires on teaching approaches completed by 104 secondary science teachers. The findings indicate that current pedagogic practice involves minimal use of the qualitative relationships of the gas laws and moderate use of a simple-to-complex sequence. Given the conceptual complexity of the gas laws, the authors support a presentation approach with increased use of qualitative exercises and, in the initial stage at least, the use of a complex-to-simple model where the interrelationships among the gas laws are easier to establish.  相似文献