共查询到20条相似文献，搜索用时 15 毫秒
1.
Genotypic and environmental variation in cadmium, chromium, arsenic, nickel, and lead concentrations in rice grains 总被引：1，自引：0，他引：1
Genotypic and environmental variation in Cd, Cr, As, Ni and Pb concentrations of grains, and the relationships between these heavy metals and Fe, Zn were investigated using 9 rice genotypes grown in 6 locations for two successive years. Significant genotypic variation was detected in the five heavy metal concentrations in grains, indicating the possibility to reduce the concentration of these heavy metals in grains through breeding approach. The environmental effect varied with metal, with Pb and Ni having greater variation than the other three metals. There was significant genotype-environment （location） interaction of the concentrations of all five heavy metals in grains, suggesting the importance of cultivar choice in producing rice with low heavy metal concentrations in grains for a given location. Correlation analysis showed that Cd and As, Cr and Ni, and As and Pb concentrations in rice grains were closely associated, and that Ni concentration in grains was negatively correlated with Zn concentration. 相似文献
2.
Metacognition and Self-Regulation in James,Piaget, and Vygotsky 总被引：3，自引：3，他引：0
This article investigates the intertwined constructs of metacognition and self-regulation as they emerge in the works and
theories of James, Piaget, and Vygotsky. To coordinate this exploration, we use an interpretive framework based on the relation
of subject and object. In this framework, James’s perspective on metacognition and self-regulation is aligned with the Self,
Piaget’s with the other and object, and Vygotsky’s with the medium or agency of language. We explore how metacognition and
self-regulation function within the realm of human behavior and development as described in the works of each of these theorists.
Key questions or issues that emerge for current research are outlined, and the limitations and benefits of each theorist’s
perspective vis-à-vis metacognition and self-regulation are discussed. 相似文献
3.
Judith A. Lothian 《The Journal of perinatal education》2012,21(1):45-47
In this column, the author explores current understandings of risk and safety in pregnancy and childbirth. An emphasis on risk management places the provider and hospital in control of women’s decisions related to pregnancy and birth and may make pregnancy and birth less safe for mothers and babies. Accepting that no life is risk free, women can let go of fear and make choices that take into account real, not imagined, or exaggerated risk and, in doing so, increase safety for themselves and their babies. The focus of maternity care becomes enhancing safety through evidence-based practice rather than managing risk. 相似文献
4.
Paul Formosa 《Educational Philosophy and Theory》2019,51(13):1325-1334
AbstractFor Kant, we cannot understand how to approach moral education without confronting the radical evil of humanity. But if we start out, as Kant thinks we do, from a morally corrupt state, how can we make moral progress? In response, I explore in this paper Kant’s gradualist and revolutionary accounts of moral progress. These differing accounts of progress raise two key questions in the literature: are these accounts compatible and which type of progress comes first? Against other views in the literature, I argue that gradual progress through a change of mores must come first and can gradually lead toward, as its ideal endpoint, a revolution in our disposition (or a change of heart) and the overthrowing of our radical evil. This has important implications for moral pedagogy. 相似文献
5.
Knowledge, Concepts, and Inferences in Childhood 总被引：1，自引：0，他引：1
The role of knowledge in children's inferences was investigated in 3 experiments. Experiment 1 examined developmental changes in the role of categorical membership, perceptual appearance, and item complexity in inferences for natural kind and artifact concepts. Preschoolers (5-year-olds), second graders (8-year-olds), and fourth graders (10-year-olds) were taught novel properties about target concepts and asked whether each of 4 probes had those properties. Probes varied in category membership and perceptual appearance relative to the target item. Item complexity also varied. Experiments 2 and 3 examined inferences with known and unknown concepts for familiar and unfamiliar properties. Older children's knowledge led to differential weighting of categorical information over appearance but only for known concepts and/or familiar properties. Preschoolers made no distinction between category and appearance for either known or unknown concepts. Additionally, as target item complexity increased, older children made more inferences than preschoolers. No differences between inferences about natural kind and artifact concepts were found. The role of theories and knowledge in children's drawing of inferences is discussed. 相似文献
6.
In this essay, I discuss three key ideas related to the construction and treatment of “difference” in and around schools and schooling. First, just as difference is most commonly located within marginalized populations at the intersections and along the lines of race, disability, social class, national origin, sexuality, sex, language, and religion, such “locating” is done by those socialized and reinforced to view themselves as normal and the norm against which they compare those different from them. Therefore, normalcy operates to maintain positions of superiority for some and inferiority for others. Next, the situation of disability at the intersection of non-dominant identities can be a powerful tool for disrupting normative spaces, practices, and beliefs. Finally, I call for critical action that exposes the negative construction of and consequences of difference in the academy, noting how epistemologies, methodologies, publication outlets and formats, and sentence structures that fall outside what we associate with normalcy, and those who employ them, are also sorted along lines of competence and incompetence, leading to the dismissal or exclusion of disabled scholars, scholars of color, and those scholars engaging in more public praxis outside the academy walls. 相似文献
7.
Outcomes in the inter- and intra-personal realms are central to the goals of Jewish education, yet educators often struggle to address them in a meaningful way. In this article, we describe what we learned from facilitating an online community of practice for congregational school leaders and day school educators seeking to enhance their work in promoting social, emotional, and spiritual growth. First, we provide a rationale for the importance of outcomes in these arenas. Then, we describe the intervention, which included webinars, mentoring, and an action-research component for participants. Finally, we share what we learned about (a) participants’ conceptualizations of socio-affective elements in the Jewish educational context and (b) the supports and challenges encountered by participants in enhancing the socio-affective dimension of their work. 相似文献
8.
JENS BJERG 《比较教育学》1995,31(1):31-48
There is often something wistful about pedagogic theory and pedagogical reflections. This may be in the nature of things: pedagogy tends to operate in the realm of ideals and ideal situations. At a time when education seems to have become exclusively a matter of money and allocation of resources in the public discourse we have found it urgent to rethink and discuss some basic tenets of pedagogy in modern society. They are centred round the notions of cultural production, social integration, and socialisation. At the same time we introduce the concept of parallel learning. 相似文献
9.
Accounts of the so-called 'crisis in professionalism' in teaching and teacher education in recent years have turned on the epistemological undermining of professional knowledge and the problems surrounding the synthesis of theory and practice which underpins teacher performance. It is argued that the concentration on performance in teaching and professional development is to be welcomed, provided that 'performance' is not defined in purely technicist or instrumental terms. In response to the trend towards evidence-informed policy and practice and mechanistic outcome-based educational effectiveness in contemporary educational debate, we conclude - drawing on the 'teaching as artistry' tradition and using arguments drawn from jazz music and insights gained from the jazz metaphor - that teacher professionalism can be enhanced through attention to the intuitive, improvisatory and existentialist spontaneity of teaching as artistic performance. 相似文献
10.
Fostering students' spatial thinking skills holds great promise for improving Science, Technology, Engineering, and Mathematics (STEM) education. Recent efforts have focused on the development of classroom interventions to build students' spatial skills, yet these interventions will be implemented by teachers, and their beliefs and perceptions about spatial thinking influence the effectiveness of such interventions. However, our understanding of elementary school teachers' beliefs and perceptions around spatial thinking and STEM is in its infancy. Thus, we created novel measures to survey elementary teachers' anxiety in solving spatial problems, beliefs in the importance of spatial thinking skills for students' academic success, and self-efficacy in cultivating students' spatial skills during science instruction. All measures exhibited high internal consistency and showed that elementary teachers experience low anxiety when solving spatial problems and feel strongly that their skills can improve with practice. Teachers were able to identify educational problems that rely on spatial problem-solving and believed that spatial skills are more important for older compared to younger students. Despite reporting high efficacy in their general teaching and science teaching, teachers reported significantly lower efficacy in their capacities to cultivate students' spatial skills during science instruction. Results were fairly consistent across teacher characteristics (e.g., years of experience and teaching role as generalist or specialist) with the exception that only years of teaching science was related to teachers' efficacy in cultivating students' spatial thinking skills during science instruction. Results are discussed within the broader context of teacher beliefs, self-efficacy, and implications for professional development research. 相似文献
11.
利益相关者与大学的责任、制度、资源 总被引：4，自引：0，他引：4
王连森 《宁波大学学报(教育科学版)》2006,28(6):103-106
大学是一个利益相关者组织。在“利益相关者组织”的分析框架下,利益相关者的期望和要求规定了大学责任,为大学指明了发展的目标方向;利益相关者的作用、地位和权利制约和规范着大学制度,为大学创设了发展的机制平台;利益相关者的物质和精神付出充实和丰富着大学资源,为大学提供了发展的能量和动力。同时,大学的发展也带动了利益相关者的发展。 相似文献
12.
13.
This longitudinal research study focused on persistence and financial aid of women, underrepresented minorities, and needy students majoring in science, engineering, and mathematics (SEM) in a large, public university in a metropolitan area. Beginning in fall 1989, four consecutive freshmen cohorts (n's = 1967, 1679, 1614, and 1924, respectively) were tracked through 1996–97. SEM majors persisted and graduated at higher rates, but took longer to graduate than non-SEM majors. Women, underrepresented minorities, and needy students received more gift aid than other student populations. However, only women had lower departure rates and graduated at higher rates than other SEM student populations. Compared to non-SEM majors, gift aid for SEM majors was more likely to be awarded on the basis of merit rather than need. Average loan indebtedness increased rapidly from 1989–90 through 1996–97 for both SEM and non-SEM majors. Implications of the findings for improved institutional and federal policy are indicated, and further research on the study topics recommended. 相似文献
14.
Education and Economic,Political, and Social Change in Vietnam 总被引：1，自引：0，他引：1
This paper provides an overview of the complex relations among history, education, political economy, and social change in Vietnam. Vietnam has a long history of education and a literate culture. The evolution of Vietnamese culture and society is characterized by both persistence and change. Social and political persistence and change have been profoundly affected by education in Vietnam. In this paper major external influences on Vietnamese education and social change are considered, including Chinese Confucian influences, French colonial influences, Soviet and US influences during the Cold War, and more contemporary international global influences as Vietnam has become part of the global economy and international regimes. The importance influence of the policy of “doi moi” (economic renovation) introduced in 1986 is seen as resulting in a major transformation in Vietnam. The paper concludes with a discussion of Vietnam’s future and its goals of developing a modern economy through a priority on the development of human capital through a distinctive Vietnamese educational system, drawing eclectically and creatively on diverse external influences. 相似文献
15.
Mark Cremin 《English in Education》1998,32(2):4-13
The imagination is essential to drama, but teachers, and leading practitioners rarely examine it in detail. This article considers the sources of the imagination, and the relationship it has with creativity within the context of improvisation. The significance of originality as a criterion of quality, and the place imitative practices have within it, are considered. Alternative functions of the imagination are suggested to counter the concern that intertextuality and self-referencing stifle creativity. 相似文献
16.
Educational Risk and Resilience in African-American Youth: Context, Self, Action, and Outcomes in School 总被引：12，自引：0，他引：12
This study examined the empirical validity of a model of human motivation as it applies to school success and failure in 3 independent samples of 10-to 16-year-old African-American youth. Specifically, we assessed how indicators of context, self , and action relate to measures of risk and resilient outcomes in school in 3 different samples, using 3 different measurement strategies. Correlational and path analyses on the 3 data sets supported the empirical validity of the model. African-American youth's experience of their parents' school involvement predicted a composite of self-system processes, which in turn predicted the subjects' reports of their engagement in school. Engagement then predicted school performance and adjustment. The data supported a reciprocal path from action to context, suggesting that youth who show more disaffected patterns of behavior and emotion in school experience less support from their families than those reporting more engaged patterns of action. Implications for program and policy decisions are discussed. 相似文献
17.
William J. Kinsella 《Technical Communication Quarterly》2005,14(3):303-310
This essay argues that to an unprecedented degree the practices of contemporary science and technology are embedded within complex institutional systems. This embeddedness problematizes received views of rhetorical action and agency, which must be reformulated to locate these principles within larger systems of power/ knowledge. Three sets of resources are identified for this reformulation: theories of organizational rhetoric, Foucauldian studies of knowledge-intensive organizations, and Foucauldian approaches to the philosophy of science. 相似文献
18.
David B. Paxman 《College Teaching》2013,61(4):158-160
AbstractEnglish language learners (ELL) are students with a primary language spoken other than English enrolled in U.S. educational settings. As ELL students take on the challenges of learning English and U.S. culture, they must also learn academic content. The expectation to succeed academically in a foreign culture and language, while learning to speak and comprehend the language itself, would be a stressful and challenging task for almost anyone. In comparison with non-ELL students, ELL students tend to demonstrate lower levels of academic achievement. The current study examined ELL students' perceptions on teacher power and its' influences on self-perceptions of learner empowerment. Quantitative data was collected measuring perceptions of teacher power use and self-perceptions of learner empowerment. Qualitative data consisted of twenty in-depth interviews with ELL students illuminating their perceptions of teacher power and its relationship to their perceptions of learner empowerment. Differences were found by language in coercive, legitimate, and expert teacher power. Four themes emerged from interviews; what good teachers do, what bad teachers do, what teachers should know, and understanding ELL students. Implications for educators and future research are discussed. 相似文献
19.
《Educational Philosophy and Theory》2013,45(5):543-558
If education is to make a difference it is widely acknowledged that we must aim to educate for understanding, but this means being clear about what we mean by understanding. This paper argues for a concept of personal understanding, recognising both the commonality and individuality of each pupil's understandings, and the relationship between understanding and interpretation, analysis and synopsis, and the quest for meaning. In supporting this view, the paper advocates an emergentist notion of person‐hood, and considers the neurophysiological reasons for asserting the individuality of human minds, brains, and the creation of personal meanings. The notion of personal meanings would, however, seem to run counter to the post‐modern denial of the autonomous self, and the tradition in philosophy, most recently stemming from Wittgenstein, that insists that meanings and understandings are essentially social, and not personal—a view also advocated by John White in regard to education. In contrast, this paper argues that meanings and understandings are both social (interpersonal) and personal. Once we reinstate the notion of personal minds and personal understandings, alongside the social, we may see more clearly what it means to educate for understanding, and why this might begin to make a difference. 相似文献
20.
Peter Roberts 《Interchange》1999,30(3):347-357
These three books, while differing somewhat in focus, style, and substance, have in common a concern to uphold critical approaches to the theory and practice of education. Addressing issues of pedagogy, research, and professional development, the texts pose a challenge to technocratic, neoliberal, and conservative discourses in the educational sphere. This essay reinforces the importance of critical work in the academy and the teaching profession, but draws attention to the problem of theoretical and personal "infighting" among left scholars. The importance of strategic alliances in the face of a (more) united, and overwhelmingly dominant, right is stressed. 相似文献