Penguin Promises: encouraging aquarium visitors to take conservation action     

Judy Brenda Mann  Roy Ballantyne  Jan Packer 《Environmental Education Research》2018,24(6):859-874

This study investigates the impact of an innovative conservation action campaign called Penguin Promises implemented at uShaka Sea World in Durban, South Africa. Communication tools included interpretive signage, exhibits with and without animals, presentations, and personal interactions, along with a specially designed postcard, on which visitors could write a promise (pledge) to make a change in their daily lives to become more environmentally responsible. Visitors who completed a card were contacted a year or more after their visit and asked about the outcomes of their promise. The results (N = 316) showed that 49.4% of respondents could give an example of something positive they had done for the environment, that they attributed to the campaign. Based on the study, recommendations are provided for the design of effective visitor conservation action campaigns.  相似文献   

在博物馆、科学中心和展览馆中利用数字技术学习   总被引：1，自引：1，他引：0  

Roy Hawkey  李远航  秦丹 《远程教育杂志》2009,17(3)

本文以博物馆和展览馆等利用数字化技术所提供的学习为综述对象,描述了博物馆学习的相关理论及发展;对在博物馆内、外利用数字化技术进行学习的趋势进行了预测;并针对未来发展趋势,对博物馆学习的设计者和开发者提供了相关建议。  相似文献   

Origin of the Spring Scale Dynamometer     

Roy Pangle  Leon Garrett 《Research quarterly for exercise and sport》2013,84(1):155-156

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A Comparison of Autonomic Nervous System Activity between Physically Trained and Untrained Individuals     

Roy H. Hahner  R. H. Rochelle 《Research quarterly for exercise and sport》2013,84(4):975-982

Abstract

The study is concerned with the comparison of autonomic nervous system (ANS) activity between highly trained collegiate track and field athletes and untrained individuals. An ANS test battery consisting of six individual measures of autonomic activity was used: (a) sublingual temperature, (b) salivary output, (c) volar skin resistance, (d) palmar skin resistance, (e) diastolic blood pressure, and (f) heart period. One group of athletes, track runners, were found to have a mean autonomic balance score significantly higher (at the .02 level) than the norm group of college students. The autonomic scores of field event athletes, however, were not significantly different from the norm. An analysis of the type of ANS activity demonstrated by the runners showed a dominance by the parasympathetic as compared to a mixed pattern demonstrated by the normative sample. It was concluded that highly trained track runners demonstrated a significantly higher autonomic balance score than did normal college students, and that their resting autonomic pattern was predominantly parasympathetic. There was evidence to indicate that equality of performance in the running events in track, and possibly other athletic events, may be partially predictable from autonomic balance scores.  相似文献   

Study of Hormone Receptors and Epidermal Growth Factor Expression in Invasive Breast Cancers in a Cohort of Western India     

Hardik Dodiya  Amit Patel  Dipal Patel  Ashish Kaushal  D. G. Vijay 《Indian journal of clinical biochemistry : IJCB》2013,28(4):403-409

The objective of study was to evaluate and correlate the pathological characteristics of breast cancer patients with estrogen receptor (ER), progesterone receptor (PR) and human epidermal growth factor receptor 2 (Her2/neu) detected by immunohistochemistry and/or fluorescent in situ hybridization method. We have conducted 2 year study of 204 cases of breast cancer at HCG-Medisurge Hospitals, Ahmedabad from 2009 to 2011. Significant correlation was found in ER and PR expression whereas no correlation was found in hormonal receptors and Her2/neu expression. ER and PR positivity increased with advancing age in breast carcinoma patients while not affecting Her2/neu expression. The expression of hormone receptors were higher in infiltrating lobular carcinoma and infiltrating duct carcinoma subtypes of breast carcinoma as compared to other subtypes such medullary and in situ carcinoma. High-grade carcinoma patients were predominantly ER/PR negative and Her2/neu positive as compared to lower grade breast carcinoma whereas high-stage carcinoma patients were ER/PR positive and Her2/neu positive as compared to lower stage breast carcinoma.  相似文献   

Season of birth is related to child retention rates, achievement, and rate of diagnosis of specific LD   总被引：1，自引：0，他引：1  

Martin RP  Foels P  Clanton G  Moon K 《Journal of learning disabilities》2004,37(4):307-317

A sizable literature has demonstrated that the achievement of children in early elementary school is related to their season of birth: Those born in summer typically perform less well than those born in the fall. A small literature indicates that more children diagnosed with specific learning disabilities (SLD) are born in the summer. We have begun to explore the possibility that the same processes may account for both outcomes. In order to better understand these processes, the standardized achievement levels and rates of diagnosis of SLD for children born during each season were studied in one geographical area of the State of Georgia served by 28 school districts. Standardized achievement scores in reading, mathematics, and science were reliably lower for those born in the summer. Furthermore, there was a strong relationship between season of birth and the rate at which children received a diagnosis of SLD. Summer-born children were diagnosed with SLD at a higher rate than their peers. Four hypotheses for both the lower performance in the general school population and the greater rate of SLD diagnosis among these children are discussed.  相似文献   

Modifying the Clarity Behaviours of Experienced Teachers Through Structured Feedback     

Roy Killen 《Asia-Pacific Journal of Teacher Education》1991,19(2):103-115

This paper briefly describes the methodology and results of research which aimed to determine whether or not the clarity behaviours of experienced teachers in regular classrooms were stable over time and whether or not they could be significantly altered through a process of self‐analysis based on feedback of students’ perceptions of their teacher's clarity. The research is an extension of a series of studies of teacher clarity which commenced at The Ohio State University in 1975. It utilised instruments which the author developed for the measurement of teacher clarify and which allowed comparisons to be made between student perceptions of teacher clarify and teachers’ self‐ratings of their clarity. The major finding of the research was that experienced teachers were able to make significant improvements in their clarity when provided with structured feedback about their lessons. The implications of this finding for teachers and for teacher education are discussed.  相似文献   

Story of fission     

Amit Roy 《Resonance》2016,21(3):247-258

The discovery of nuclear fission is the culmination of sustained efforts involving many scientists led by Hahn and Meitner to understand the production of artificial radioactivity induced by neutrons bombarding uranium. The large energy release in this process was almost immediately used for both military and civilian purposes. It also started the largescale funding of scientific research by governments across the world. Nuclear energy is one of the clean sources of energy and contributes very little to global warming.  相似文献   

Bernstein and the explanation of social disparities in education: a realist critique of the socio‐linguistic thesis     

Roy Nash 《British Journal of Sociology of Education》2006,27(5):539-553

Can an explanation of the origins of social disparities in educational achievement be assisted by a critical examination of Bernstein’s sociology? This central question is approached by a consideration of the status of Bernstein’s socio‐linguistic thesis. The focus is on the nature of the explanations provided. The paper asks: What is the explanatory force of Bernstein’s structuralism? What is the relationship between Bernstein’s sociological explanations and Vygotskian psychological explanations? What are the effects for pedagogy of cognitive socialization mediated by language‐use consistent with Bernstein’s theory? The answers to these questions may pose a challenge for sociologists of education engaged with Bernstein’s sociology.  相似文献   

Assessing Model Similarity in Structural Equation Modeling     

Keke Lai  Samuel B. Green  Roy Levy  Ray E. Reichenberg  Yuning Xu  Marilyn S. Thompson 《Structural equation modeling》2016,23(4):491-506

Two models can be nonequivalent, but fit very similarly across a wide range of data sets. These near-equivalent models, like equivalent models, should be considered rival explanations for results of a study if they represent plausible explanations for the phenomenon of interest. Prior to conducting a study, researchers should evaluate plausible models that are alternatives to those hypothesized to evaluate whether they are near-equivalent or equivalent and, in so doing, address the adequacy of the study’s methodology. To assess the extent to which alternative models for a study are empirically distinguishable, we propose 5 indexes that quantify the degree of similarity in fit between 2 models across a specified universe of data sets. These indexes compare either the maximum likelihood fit function values or the residual covariance matrices of models. Illustrations are provided to support interpretations of these similarity indexes.  相似文献