5,032 research outputs found
College students' perceptions of the theory of evolution
No full textAlthough a well-corroborated scientific theory, the theory of evolution has continued to cause dilemmas for some individuals who have not easily been able to accommodate the concepts of this theory within their cognitive culture. The reason lies in the overlap of some ideas that the theory advocates with other social, epistemological, and religious beliefs. This study describes how 11 college biology students who completed a course on the theory of evolution perceive the relationship among their epistemological beliefs about science, their beliefs about religion, and their perception of nature and causality and their position regarding the theory of evolution. It also compares the different positions of the students to that of the course instructor. Questionnaires and semistructured interviews were used to collect data. Qualitative methods were used to analyze the data and identify the various positions of the students and course instructor. The students' positions ranged from complete acceptance to complete rejection of the theory of evolution. The results suggest that students' personal beliefs should not be dismissed or underestimated when teaching the theory of evolution. © 2008 Wiley Periodicals, Inc.AIKENHEAD G, 1999, 9 S INT ORG SCI TECH; Aikenhead GS, 1999, J RES SCI TEACH, V36, P269, DOI 10.1002-(SICI)1098-2736(199903)36:3269::AID-TEA33.0.CO;2-T; Banet E, 2003, INT J SCI EDUC, V25, P373, DOI 10.1080-09500690210145716; BISHOP BA, 1990, J RES SCI TEACH, V27, P415, DOI 10.1002-tea.3660270503; BIZZO NMV, 1994, J RES SCI TEACH, V31, P537; Bogdan R. C., 1992, QUALITATIVE RES ED I; COBERN W, 1997, ELECT J SCI ED, V1; Cobern W. W., 1991, NARST MONOGRAPH; COBERN WW, 1993, J RES SCI TEACH, V30, P935, DOI 10.1002-tea.3660300810; Cobern WW, 1996, SCI EDUC, V80, P579, DOI 10.1002-(SICI)1098-237X(199609)80:5579::AID-SCE53.0.CO;2-8; Cobern W. W., 2000, SCI EDUC, V9, P219, DOI DOI 10.1023-A:1008747309880; COBERN WW, 1994, J RES SCI TEACH, V31, P583; Cobern WW, 1999, J RES SCI TEACH, V36, P541, DOI 10.1002-(SICI)1098-2736(199905)36:5541::AID-TEA33.3.CO;2-T; COBERN WW, 1995, SCI EDUC, V4, P287, DOI 10.1007-BF00486625; Cobern W.W., 1998, INT HDB SCI ED, P39; COLL R, 2004, NAT ASS RES SCI TEAC; Dagher ZR, 2004, INT J SCI EDUC, V26, P735, DOI 10.1080-0950069032000138806; Dagher ZR, 1997, J RES SCI TEACH, V34, P429, DOI 10.1002-(SICI)1098-2736(199705)34:5429::AID-TEA23.0.CO;2-S; Dagher ZR, 2005, SCI EDUC, V89, P378, DOI 10.1002-sce.20054; Darwin C., 1859, ORIGIN SPECIES; DECHARDIN PT, 1960, PHENOMENON MAN; DOBZHANSKY T, 1973, AM BIOL TEACH, V62, P102; Downie JR, 2000, J BIOL EDUC, V34, P139, DOI 10.1080-00219266.2000.9655704; Ferrari M, 1998, INT J SCI EDUC, V20, P1231, DOI 10.1080-0950069980201005; FRANCIS LJ, 2001, RES SCI TECHNOLOGICA, V19, P39; Fysh R., 1998, AUSTR SCI TEACHERS J, V44, P61; DEMASTES SS, 1995, SCI EDUC, V79, P637, DOI 10.1002-sce.3730790605; Griffith JA, 2004, J RES SCI TEACH, V41, P791, DOI 10.1002-tea.20027; JACKSON DF, 1995, J RES SCI TEACH, V32, P585, DOI 10.1002-tea.3660320606; Jensen MS, 1996, J RES SCI TEACH, V33, P879, DOI 10.1002-(SICI)1098-2736(199610)33:8879::AID-TEA43.0.CO;2-T; JENSEN MS, 1995, SCI EDUC, V79, P147, DOI 10.1002-sce.3730790203; JIMENEZALEIXANDRE MP, 1992, INT J SCI EDUC, V14, P51, DOI 10.1080-0950069920140106; Kearney Michael, 1984, WORLDVIEW; Kuhn T., 1970, STRUCTURES SCI REVOL; LAWSON AE, 1992, J RES SCI TEACH, V29, P143, DOI 10.1002-tea.3660290205; LAWSON AE, 1990, J RES SCI TEACH, V27, P589, DOI 10.1002-tea.3660270608; Lederman NG, 2002, J RES SCI TEACH, V39, P497, DOI 10.1002-tea.10034; Mayr E., 2000, SCI AM, V283, P79; MILLAR R, 1998, BEYOND 2000 SCI ED F; Nehm R., 2004, NAT ASS RES SCI TEAC; Passmore C, 2002, J RES SCI TEACH, V39, P185, DOI 10.1002-tea.10020; Roth WM, 1997, INT J SCI EDUC, V19, P125, DOI 10.1080-0950069970190201; Rutledge M. L., 1999, SCH SCI MATH, V99, P13; Samarapungavan A, 1997, COGNITIVE SCI, V21, P147; SETTLAGE J, 1994, J RES SCI TEACH, V31, P449; Sharmann L. C., 1992, J RES SCI TEACH, V29, P375; Shipman HL, 2002, SCI EDUC, V86, P526, DOI 10.1002-sce.10029; SINATRA G, 2004, NAT ASS RES SCI TEAC; Smith M. U., 2004, SCI EDUC, V13, P553, DOI 10.1023-B:SCED.0000042848.14208.bf.; SMITH MU, 1994, J RES SCI TEACH, V31, P591; Southerland SA, 2001, EDUC PSYCHOL REV, V13, P325, DOI 10.1023-A:1011913813847; Strickberger M W, 2000, EVOLUTION; Trani R, 2004, AM BIOL TEACH, V66, P419, DOI 10.1662-0002-7685(2004)066[0419:IWTIAM]2.0.CO;234343
LEFT-VENTRICULAR OUTFLOW TRACT OBSTRUCTION IN ATRIOVENTRICULAR SEPTAL-DEFECTS - A PATHOLOGICAL AND MORPHOMETRIC EVALUATION
No full textAbstract
Subaortic stenosis has been described with increasing frequency as an ominous feature of atrioventricular septal defect (AVSD), especially following surgical correction of the anomaly in non-Down's syndrome patients. In order to study the surgical anatomy of the left ventricular outflow tract in this malformation, 48 hearts featuring AVSD were examined. Obstructive lesions were classified into unequivocal forms (class A, 13.5%) and potential ones (class B, 10.8%). In the remaining hearts (class C, 75.7%) no obstruction was noted. In class A, subaortic stenosis was due to exaggeration of the anticipated anomalous arrangement of atrioventricular valve tensor apparatus, to the persistence of a subaortic muscular infundibulum, and to a discrete fibrous diaphragm. A potential for subaortic stenosis is provided by the unwedged position of the aortic valve. The left ventricular outflow tract is transformed into a long, forward-displaced fibromuscular channel. Morphometric analysis showed in AVSD (with both common annulus and separate orifices) a significantly (p less than 0.01) lower inflow/outflow tract ratio, and a significantly (p less than 0.01) lower right ventricular/left ventricular outflow length ratio than normal hearts. These results suggest that AVSD is characterized not only, as commonly stated, by inflow tract shortening, but by outflow tract lengthening as well. On these anatomical grounds, nearly all cases of AVSD could harbor the potential for subaortic stenosis; however, this becomes a real hazard (class B) only when associated with forward displacement of the left anterior papillary muscle, or direct insertion on the ventricular septum of the anterior bridging leaflet, and it may be converted to an actual obstruction by the effects of surgery.(ABSTRACT TRUNCATED AT 250 WORDS
Chronicle (Paterson, NJ) Vol. 34, No.47, Nov. 18, 1962
No full textLocal information pertaining to Paterson, N.J. and surrounding Passaic County. Issues may include events, government, business, political cartoons, engagement and marriage announcements, and birth announcements. This publication was also known as the Paterson Chronicle (1952) and the Paterson Sunday Chronicle (1951-1952)
Resilience of NJ Transit assets to climate impacts
No full textFirst Environment developed this report under the guidance of New Jersey Transit to determine the potential risks of weather related events and impacts on its stationary assets. This research includes a survey of current reports and research on the topic; identifies and maps specific impacts to New Jersey Transit assets - commuter rail, light rail and bus; compiles national and international agency efforts underway regarding Transit strategies to protect assets; determines appropriate resilience strategies for the impacts identified; provides a summary level costs and benefits for each of the resilience strategies identified; and summarizes and highlights cost effective strategies to maintain NJ TRANSIT current and planned future services. This report provides a regional overview and can be used to identify critical impacts on assets and take appropriate measures to reduce its vulnerability to extreme weather
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Molecular cloning and functional analyses of glutathione peroxidase homologous genes from Chlorella sp NJ-18
No full textPhotosynthetic organisms often encounter oxidative stresses due to changes of environmental conditions. In this study, two glutathione peroxidase (GPX) homologous genes, namely NJ-18Gpx1 and NJ-18Gpx2, were identified in Chlorella sp. NJ-18, a single-celled green alga. The two NJ-18Gpx genes can produce 2 or 3 transcript variants by alternative splicing, predicted to encode 4 non-selenium GPX proteins (NS-GPX). Expression of the two genes was analyzed by quantitative RT-PCR in Chlorella sp. NJ-18 exposed to various treatments known to generate reactive oxygen species. Neutral red, a singlet oxygen-generating photosensitizer, significantly increased the expression of NJ-18Gpx1 within 5 h. Exposure of algal culture to UV-B for 3 h caused up-regulation of mRNA levels of NJ-18Gpx1 and NJ-18Gpx2 by 4- and 50-folds, respectively. Similar to CrGPX5 and CrGPX3 in Chlamydomonas reinhardtii, purified recombinant NJ-18GPXs showed activities of thioredoxin-dependent peroxidases that catalyze the reduction of hydrogen peroxide and organic hydroperoxides. The V-max values for NJ-18GPX1 toward different peroxides were approximately 10-fold higher than those for NJ-18GPX2. In addition, overexpression of NJ-18Gpx1 in Synechocystis sp. PCC 6803, a cyanobacterium, enhanced its tolerance to neutral red and H2O2. These results indicate that NJ-18GPXs can act as efficient peroxide scavengers protecting cells from oxidative damages in Chlorella. (C) 2012 Elsevier B.V. All rights reserved.Photosynthetic organisms often encounter oxidative stresses due to changes of environmental conditions. In this study, two glutathione peroxidase (GPX) homologous genes, namely NJ-18Gpx1 and NJ-18Gpx2, were identified in Chlorella sp. NJ-18, a single-celled green alga. The two NJ-18Gpx genes can produce 2 or 3 transcript variants by alternative splicing, predicted to encode 4 non-selenium GPX proteins (NS-GPX). Expression of the two genes was analyzed by quantitative RT-PCR in Chlorella sp. NJ-18 exposed to various treatments known to generate reactive oxygen species. Neutral red, a singlet oxygen-generating photosensitizer, significantly increased the expression of NJ-18Gpx1 within 5 h. Exposure of algal culture to UV-B for 3 h caused up-regulation of mRNA levels of NJ-18Gpx1 and NJ-18Gpx2 by 4- and 50-folds, respectively. Similar to CrGPX5 and CrGPX3 in Chlamydomonas reinhardtii, purified recombinant NJ-18GPXs showed activities of thioredoxin-dependent peroxidases that catalyze the reduction of hydrogen peroxide and organic hydroperoxides. The V-max values for NJ-18GPX1 toward different peroxides were approximately 10-fold higher than those for NJ-18GPX2. In addition, overexpression of NJ-18Gpx1 in Synechocystis sp. PCC 6803, a cyanobacterium, enhanced its tolerance to neutral red and H2O2. These results indicate that NJ-18GPXs can act as efficient peroxide scavengers protecting cells from oxidative damages in Chlorella. (C) 2012 Elsevier B.V. All rights reserved
Variations on the Author
No full text“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Chronicle (Paterson, NJ) Vol. 33, No. 22, May 28, 1961
No full textLocal information pertaining to Paterson, N.J. and surrounding Passaic County. Issues may include events, government, business, political cartoons, engagement and marriage announcements, and birth announcements. This publication was also known as the Paterson Chronicle (1952) and the Paterson Sunday Chronicle (1951-1952)
Chronicle (Paterson, NJ) Vol. 33, No. 27, Jul. 2, 1961
No full textLocal information pertaining to Paterson, N.J. and surrounding Passaic County. Issues may include events, government, business, political cartoons, engagement and marriage announcements, and birth announcements. This publication was also known as the Paterson Chronicle (1952) and the Paterson Sunday Chronicle (1951-1952)
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