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81.
ObjectivesThe present study examined traumatic experiences, PTSD, and co-morbid symptoms in relation to neuropsychological and school performance in school children affected by two decades of civil war and unrest.MethodThe epidemiological survey of children's mental health included a representative sample of 420 school children. Local teachers were trained to administer a translation of the UCLA-PTSD Index Form. The instrument and the epidemiological findings were validated by assessment through clinical expert interview, school grades, and neuropsychological testing in a subsample (N = 67).ResultsNinety-two percent of the children surveyed had experienced severely traumatizing events such as combat, bombing, shelling, or witnessing the death of a loved one. Twenty-five percent met the criteria for a diagnosis of PTSD. Traumatized children reported lasting interference of experiences with their daily life, which was corroborated by memory testing, scores in school performance and ratings of social withdrawal. Depressive symptoms and poor physical health were frequent in these children. The majority of trained teachers achieved valid results in the structured interviews.ConclusionPerformance and functioning in children are related to the total load of traumatic events experienced. An important component of psychosocial programs in post-conflict areas should include increasing community-based awareness of the consequences of traumatic stress, both as a preventative measure and as a way of decreasing stigmatization of affected individuals.  相似文献   
82.
From birth, infants detect associations between the locations of static visual objects and sounds they emit, but there is limited evidence regarding their sensitivity to the dynamic equivalent when a sound-emitting object moves. In 4 experiments involving thirty-six 2-month-olds, forty-eight 5-month-olds, and forty-eight 8-month-olds, we investigated infants' ability to process this form of spatial colocation. Whereas there was no evidence of spontaneous sensitivity, all age groups detected a dynamic colocation during habituation and looked longer at test trials in which sound and sight were dislocated. Only 2-month-olds showed clear sensitivity to the dislocation relation, although 8-month-olds did so following additional habituation. These results are discussed relative to the intersensory redundancy hypothesis and work suggesting increasing specificity in processing with age.  相似文献   
83.
Leadership language communicates more than words. Leaders are able to use the power of language to not only articulate an organizational vision but to create excitement and support around that vision. Library leaders can model organizational values through speech strengthening a written policy into practice. Organizational culture is difficult to change but leaders can counter negative and deceptive messages into productive statements that help employees move forward to understand and embrace library strategic goals. How a leader chooses to use language to articulate a vision, advance organizational values, and to change organizational culture is critical. Ignoring language opportunities will hinder not only leader success but organizational success as well.  相似文献   
84.
We explore a long-observed phenomenon in children's cognitive development known as size seriation. It is not until children are around 7 years of age that they spontaneously use a strict ascending or descending order of magnitude to organize sets of objects differing in size. Incomplete and inaccurate ordering shown by younger children has been thought to be related to their incomplete grasp of the mathematical concept of a unit. Piaget first brought attention to children's difficulties in solving ordering and size-matching tests, but his tasks and explanations have been progressively neglected due to major theoretical shifts in scholarship on developmental cognition. A cogent alternative to his account has never emerged, leaving size seriation and related abilities as an unexplained case of discontinuity in mental growth. In this monograph, we use a new training methodology, together with computational modeling of the data to offer a new explanation of size seriation development and the emergence of related skills. We describe a connected set of touchscreen tasks that measure the abilities of 5- and 7-year-old children to (a) learn a linear size sequence of five or seven items and (b) identify unique (unit) values within those same sets, such as second biggest and middle-sized. Older children required little or no training to succeed in the sequencing tasks, whereas younger children evinced trial-and-error performance. Marked age differences were found on ordinal identification tasks using matching-to-sample and other methods. Confirming Piaget's findings, these tasks generated learning data with which to develop a computational model of the change. Using variables to represent working and long-term memory (WM and LTM), the computational model represents the information processing of the younger child in terms of a perception-action feedback loop, resulting in a heuristic for achieving a correct sequence. To explain why older children do not require training on the size task, it was hypothesized that an increase in WM to a certain threshold level provides the information-processing capacity to allow the participant to start to detect a minimum interval between each item in the selection. The probabilistic heuristic is thus thought to be replaced during a transitional stage by a serial algorithm that guarantees success. The minimum interval discovery has the effect of controlling search for the next item in a principled monotonic direction. Through a minor additional processing step, this algorithm permits relatively easy identification of ordinal values. The model was tested by simulating the perceptual learning and action selection processes thought to be taking place during trial-and-error sequencing. Error distributions were generated across each item in the sequence and these were found to correspond to the error patterns shown by 5-year-olds. The algorithm that is thought to emerge from successful learning was also tested. It simulated high levels of success on seriation and also on ordinal identification tasks, as shown by 7-year-olds. An unexpected finding from the empirical studies was that, unlike adults, the 7-year-old children showed marked difficulty when they had to compute ordinal size values in tasks that did not permit the use of the serial algorithm. For example, when required to learn a non-monotonic sequence where the ordinal values were in a fixed random order such as “second biggest, middle-sized, smallest, second smallest, biggest,” each item has to be found without reference to the “smallest difference” rule used by the algorithm. The difficulty evinced by 7-year-olds was consistent with the idea that the information in LTM is integrally tied to the search procedure itself as a search-and-stop based on a cumulative tally, as distinct from being accessed from a more permanent and atemporal store of stand-alone ordinal values in LTM. The implications of this possible constraint in understanding are discussed in terms of further developmental changes. We conclude that the seriation behavior shown by children at around 7 years represents a qualitative shift in their understanding but not in the sense that Piaget first proposed. We see the emergent algorithm as an information-reducing device, representing a default strategy for how humans come to deal with potentially complex sets of relations. We argue this with regard to counting behaviors in children and also with regard to how linear monotonic devices for resolving certain logical tasks endure into adulthood. Insofar as the monograph reprises any aspect of the Piagetian account, it is in his highlighting of an important cognitive discontinuity in logicomathematical understanding at around the age of 7, and his quest for understanding the transactions with the physical world that lead to it.  相似文献   
85.
Leaders need a variety of tools to be effective in their management, communication, and leadership. These tools should be used for specific jobs and are operational in working with some personalities but not all. Leaders can develop these tools and over time, learn when and how to effectively use them. Such tools will enhance the leader's ability to address a variety of situations and issues drawing upon expertise gained through experience.  相似文献   
86.
Column Editor's Note. Leaders need to develop long term perspectives if they are to be successful in leading their organizations into the future. A vision is a good start but the leader needs to be able to anticipate developments, opportunities, changes, and finances if they are to guide their organization through a changing landscape. Successful leaders are able to develop insights into the future and position their organization to positively interact with their environment. While some of these skills are intuitive, leaders are able to develop a long term perspective through several strategies. Interested authors are invited to submit articles for this column to the editor at .  相似文献   
87.
This study focuses on the flow experience in business education. Flow experience, characterized by concentration, control, and enjoyment, can lead to better learning outcomes. Leading preconditions of flow include the balance of challenge and skill, feedback, and goal clarity. Other situational factors affect the flow experience through the mediating effects of these three factors. In this article, we extend an existing framework linking flow and learning. Using the model as a guide, we start our research effort of flow in business education by conducting a field survey of student learning experience in terms of flow and influential factors. Data were collected using business students taking an introductory Operations Management course. The analysis reveals that flow does exist in classroom learning. Its key dimensions are concentration, sense of control, and enjoyment. The more important leading factor is having clear feedback. Characteristics of both the instructor and students play a role in the flow experience of students during lecture. It is evident that flow theory offers a useful framework for business education research. Suggestions for future research are made.  相似文献   
88.
ABSTRACT

Background and Context

Women are underrepresented in the field of computer science, a trend that in part can be traced to girls’ early experiences with the discipline.  相似文献   
89.
我是一位有抱负的旅游记者,同时也是一名大一新生。我已经决定将旅游新闻报道当做我的职业。我虽年仅19岁,却有过大量异国旅游经历。我发现旅游和记录这些旅行经历属于我生活中的最爱。我生活中最令人兴奋的事情,其一便是与拥有不同文化背景的人交流、倾听他们的故事,体验他们的生活方式。  相似文献   
90.
The face of Modern Foreign Language education (MFL) in Scotland is changing. A major policy shift in Scottish education in 2012 set out the aspiration that all students up to the end of third level education in Scottish schools would have the opportunity to learn not one but two languages, in addition to their mother tongue. Over the last 20 years, there has been, concurrently, an undertaking by the Scottish government, in a series of policy documents, committing to provision that will ensure that students with additional support needs (ASN) receive equality of access to a broad and balanced education. This paper draws upon policy documents and published research in the area to review the extent to which the vision of language learning of all has been made available to students with ASN and the documented benefits associated with MFL education for those with ASN. Drawing upon case studies of inclusive MFL pedagogies, it identifies successful strategies that can be deployed by teachers. It then considers some of the mechanisms by which the current gaps in provision have arisen and proposes possible remedial steps, drawing on both an analysis of policy and case studies of effective practice.  相似文献   
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