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Allison H. Friedman-Krauss C. Cybele Raver Juliana M. Neuspiel John Kinsel 《Early education and development》2014,25(5):681-702
Research Findings: The current article explores the relationship between teachers’ perceptions of child behavior problems and preschool teacher job stress, as well as the possibility that teachers’ executive functions moderate this relationship. Data came from 69 preschool teachers in 31 early childhood classrooms in 4 Head Start centers and were collected using Web-based surveys and Web-based direct assessment tasks. Multilevel models revealed that higher levels of teachers’ perceptions of child behavior problems were associated with higher levels of teacher job stress and that higher teacher executive function skills were related to lower job stress. However, findings did not yield evidence for teacher executive functions as a statistical moderator. Practice or Policy: Many early childhood teachers do not receive sufficient training for handling children's challenging behaviors. Child behavior problems increase a teacher's workload and consequently may contribute to feelings of stress. However, teachers’ executive function abilities may enable them to use effective, cognitive-based behavior management and instructional strategies during interactions with students, which may reduce stress. Providing teachers with training on managing challenging behaviors and enhancing executive functions may reduce their stress and facilitate their use of effective classroom practices, which is important for children's school readiness skills and teachers’ health. 相似文献
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Juliana FELGUEIRAS Joana Vieira SILVA Margarida FARDILHA 《Journal of Zhejiang University. Science. B》2014,15(1):16-42
Prostate cancer （PCa） incidence and mortality have decreased in recent years. Nonetheless, it remains one of the most prevalent cancers in men, being a disquieting cause of men＇s death worldwide. Changes in many cell signaling pathways have a predominant role in the onset, development, and progression of the disease. These include prominent pathways involved in the growth, apoptosis, and angiogenesis of the normal prostate gland, such as an- drogen and estrogen signaling, and other growth factor signaling pathways. Understanding the foundations of PCa is leading to the discovery of key molecules that could be used to improve patient management. The ideal scenario would be to have a panel of molecules, preferably detectable in body fluids, that are specific and sensitive biomarkers for PCa In the early stages, androgen deprivation is the gold standard therapy. However, as the cancer progresses, it even- tually becomes independent of androgens, and hormonal therapy fails. For this reason, androgen-independent PCa is still a major therapeutic challenge. By disrupting specific protein interactions or manipulating the expression of some key molecules, it might be possible to regulate tumor growth and metastasis formation, avoiding the systemic side effects of current therapies. Clinical trials are already underway to assess the efficacy of molecules specially designed to target key proteins or protein interactions. In this review, we address that recent progress made towards under- standing PCa development and the molecular pathways underlying this pathology. We also discuss relevant molecular markers for the management of PCa and new therapeutic challenges. 相似文献
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James Baldwin Alice Berridge Carmine Desanto Juliana Corn Frank Greene 《Community College Journal of Research & Practice》2013,37(4):341-353
Abstract This study reports the results of a national survey of two and four-year colleges in 21 states in the United States. The study was undertaken at the direction of the Developmental Mathematics Committee of the American Mathematics Association of Two-Year Colleges (AMATYC). The purpose of the study was to establish the state of the art of developmental mathematics. The results indicated that many colleges recognized the problem of underprepared students and had developmental mathematics programs. However, with the exception of a few schools, the colleges reported no formal evaluation of their programs. 相似文献
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Multigrade teaching in Peru, Sri Lanka and Vietnam: an overview 总被引：1，自引：0，他引：1
E. Hargreaves C. Montero N. Chau M. Sibli T. Thanh 《International Journal of Educational Development》2001,21(6)
This paper comprises reviews of multigrade teaching in three countries: Peru, Sri Lanka and Vietnam. For each country, we describe the context for multigrade teaching, the country's education system, the place of multigrade teaching within the system, problems associated with multigrade teaching and current strategies for multigrade teaching. We conclude by noting some common experiences for multigrade schools across the countries, including those of isolation and dispersion, lack of physical facilities, poor teacher backgrounds and conditions, limited classroom teaching and learning strategies and pupils' deprived backgrounds. Also common across the three countries is a national commitment to improving the situation for multigrade classrooms. 相似文献
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Albert Sangrá Juliana Elisa Raffaghelli Montse Guitert-Catasús 《British journal of educational technology : journal of the Council for Educational Technology》2019,50(4):1619-1638
The concept of learning ecologies emerged in a context of educational change. While the “learning ecologies” construct has offered a broad semantic space for characterizing innovative ways of learning, it is also true that its potential to promote innovative educational interventions may have been hindered by this same broadness. Based on this assumption, in this paper the authors carried out a systematic review of the literature on learning ecologies with the aim of analysing: (1) the varying definitions given to the concept, including the ontological perspective underlying the phenomena studied; (2) the methodological approaches adopted in studying the phenomenon; and (3) the applications of the research on this topic. Throughout this analysis, the authors attempt to describe the criticalities of the existing research, as well as the potential areas of development that align well with the theoretical/ontological issues, methodological approaches and educational applications. The authors selected and analysed 85 articles, which they then classified in a set of 20 categories defined by them on a theoretical basis. Moreover, in order to triangulate the manual coding, a bibliometric map was created showing the co-citation activity of the 85 papers. The emerging picture showed significant variability in the ontological definitions and methodological approaches. In spite of this richness, few educational applications currently exist, particularly with regard to technology-enhanced learning developments. Most research is observational, devoted to describing hybrid (digital and on-site) learning activities that bridge the gap between the school and social spaces. Furthermore, many of the studies relate to the field of secondary education, with fewer studies exploring adult learning and higher education. The studies dealing with professional development relate mostly to teachers’ continuing education. The authors conclude that the concept of learning ecologies could be used to address further experimental and design-based research leading to research applications if there is proper alignment between the ontological, methodological and applicative dimensions. The main potential of this strategy lies in the possibility of supporting learners by raising their awareness of their own learning ecologies, thereby empowering them and encouraging them to engage in agentic practices. This empowerment could help maintain and build new and better learning opportunities, which every learning ecology can incorporate, amidst the chaotic abundance that characterizes the digital society. 相似文献
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Abbas Mohamed Omar Haji Ali Haji Juliana James Manyerere 《International Information and Library Review》2020,52(1):1-9
AbstractThis study examines the promotion and knowledge of online patent literature search among students, librarians, and instructors to enhance university scientific output in Zanzibar. The study was guided by four key questions: What is the level of awareness of students, instructors and library staff about patent documents as source of information? To what extent do students and instructors access online patent databases? What is the library experience in training students about online patent literature searching?, and what are the challenges facing library and instructors in promoting patent literature search? The study used survey approach whereby questionnaire and interview were used to collect data. The recent literatures regarding online patent literature searching were also critically reviewed. A survey was conducted at two Universities in Zanzibar namely the State University of Zanzibar and Zanzibar University, whereby 20 library staff, 10 instructors and 140 undergraduate students from the School of Computing and the Faculty of Engineering were involved in this study. The findings show that more than three quarters of respondents were either partially aware or not aware at all about the existence of free online patent databases. Likewise, the majority of students had no enough skills of patent literature searching. However, usually the library organizes training on general online literature searching skills but patent literature searching was not effectively taught and a big challenge observed in this study regarding promotion of patent literature searching is inadequate patent searching skills among library and instructors. Based on the findings, the study proposed several recommendations to rectify the existing problem. 相似文献
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This paper compares the free-throw performance of men and women in the National Collegiate Athletic Association (NCAA), taking into account differences in ball size, ball stiffness, and release height. Although some claim that men are more athletic, based on the assumption that athleticism correlates with physical traits, the average free-throw percentages in NCAA Division 1 basketball have been close for decades and across gender. The larger men’s basketball could create a disadvantage for men. On the other hand, the stiffer women’s basketball could create a disadvantage for women. In addition, women typically launch the ball from a lower height above the floor than men do. Therefore, the question of which gender is more consistent was unanswered. To answer this question, we turned to simulations of basketball trajectories. We patched together closed-form trajectory events that terminate at the front rim, back rim, backboard, and a fictitious plane below the ring. This produced what we call speed lines. Using the speed lines and NCAA average free-throw percentages, the consistencies of men- and women-free throws were determined. Examination of the speed lines reveals that they exhibit fractal-like behavior. We analyzed sensitivities with respect to ball size, ball bounce, and release height. We found that the most influential factor in determining free-throw success is the average release height of a gender. Under the stipulated assumptions, this paper found that women are about 3% more consistent than men are. 相似文献
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Chau Kan Chu 《Educational studies》2011,37(4):481-501
This paper argues that, despite government support in financial and contractual matters, ongoing problems of retention of Native‐speaking English Teachers (NETs) in Hong Kong stem, in part, from problems of cross‐cultural adjustment. The paper reports a small‐scale qualitative investigation into the experiences of NETS in Hong Kong and finds problems of cross‐cultural adjustment of the NETs themselves, the host schools and the government’s induction practices. The paper reports a diversity of problems in cross‐cultural adjustment and a variety of ways in which NETs handled them. The argument is made for increased and differentiated attention to be given to the cross‐cultural adjustment of NETs, for greater social networking and for reducing the isolation and cross‐cultural stresses that they experience. It is suggested that this might attenuate the problem of high NET turnover in Hong Kong. 相似文献