The aim of the present study was to test environmental and cognitive variables as possible cross-domain predictors of early literacy and numeracy skills. One hundred forty-eight preschool children (mean age = 64.36 months ± 3.33) were enrolled in the study. The battery included a home literacy and home numeracy questionnaire, measures and phonological and visuo-spatial working memory, tasks tapping response inhibition, and predictors of literacy (vocabulary, phonological awareness, letter knowledge) and numeracy (magnitude comparison, number knowledge) skills. The structural equation model indicated that verbal working memory and, to a lesser extent, inhibition represented cross-domain predictors, whereas home numeracy activities and visuo-spatial working memory explained additional variance only for early numeracy skills. Implications for parents and educators are discussed.
Based on an idea by Kosmulski, Franceschini et al. (2012, Scientometrics 92(3), 621–641) propose to classify a publication as “successful” when it receives more citations than a specific comparison term (CT). In the intention of the authors CT should be a suitable estimate of the number of citations that a publication – in a certain scientific context and period of time – should potentially achieve. According to this definition, the success-index is defined as the number of successful papers, among a group of publications examined, such as those associated to a scientist or a journal. In the first part of the paper, the success-index is recalled, discussing its properties and limitations. Next, relying on the theory of Information Production Processes (IPPs), an informetric model of the index is formulated, for a better comprehension of the index and its properties. Particular emphasis is given to a theoretical sensitivity analysis of the index. 相似文献
The paper proposes a framework for the study of cultural heritage management issues: the “heritage chain”. The notion translates the concept of supply chain derived from industrial organization, investigating the set of activities taking place in the heritage sector (from preservation, to archaeological excavation, conservation, research, and museum presentation) in their relationships and abilities to impact performances. The concept can be used both to address problems and inconsistencies within an individual case and, in a comparative perspective, to understand how heritage became structured differently in different countries. In this paper it is applied to a specific case of heritage preservation and management in China: the “Horse and Chariot” Museum. While investigating several aspects of management of the Chinese heritage (a rather unusual field research made possible by an attitude toward international collaboration), the case highlights the ability of the “heritage chain” to grasp a single case of heritage management with a holistic view, opening up possibilities of development for the new framework. 相似文献
Abstract In this study, we examined the mechanics and energetics of locomotion with a paddle-wheel boat and a water bike. Power output ([Wdot]tot) was measured directly on the water bike by means of an instrumented chain-ring. The simultaneous assessment of oxygen uptake ([Vdot]O2) allowed the computation of the “overall” efficiency of locomotion (ηo = [Wdot]tot / [Vdot]O2). Mean ηo was 0.27 (s = 0.02), which was unaffected by the speed, and was assumed to be the same for the two boats as both are semi-recumbent bicycles. For the paddle-wheel boat, [Wdot]tot was then obtained from ηo and measures of [Vdot]O2. The power to overcome (passive) drag was calculated as [Wdot]d = D · v (where D is the force measured by means of a load cell when towing the boats at given speeds). Propelling efficiency was calculated as ηp = [Wdot]d / [Wdot]tot, which was lower with the paddle-wheel boat (mean 0.35, s = 0.01) than with the water bike (mean 0.57, s = 0.01). The observed differences in ηp and [Wdot]d explain why at the highest speed tested (～3 m · s?1), the energy required to cover a unit distance with the water bike is similar to that required to move the paddle-wheel boat at 1.3 m · s?1. 相似文献
This study examined the dispositions, experiences, and expectations of international students in a developing country to understand
the increasing phenomenon of reverse student flows and the role of the political economy in international student mobility.
Students’ dispositions, experiences and expectations—referred here collectively as “orientations”—served as the guiding framework
for this study. Data were drawn from survey responses from 279 international students at universities throughout Mexico and
analyzed to explore the orientations among students from Europe, Latin America and North America. Findings showed significant
differences among international students’ dispositions, experiences, and expectations by these geographical regions of origin.
In a broader context, this research addressed the important role of developing countries as not only senders but also receivers
of international students. This research also demonstrated the ways that the political economy shape the orientations of students
studying abroad. 相似文献
This paper proposes a model to assess the level of maturity in Virtual Communities of Practice (VCoPs). The model is based on a theoretical construction attained from the analysis of previous frameworks proposed in literature. Using this construction, we have proposed eight main organizational, managerial and technological levers to improve the performance of VCoPs. Additionally, the model presents the analysis of four performance metrics obtained from these VCoP management levers. The model presented can be used as a benchmarking tool for analysing how companies perform in their management of VCoPs. After developing the model, we applied it to a benchmarking study of four global oil and gas companies. Our results include a performance comparison among these companies as well as the main practices and technologies they use to achieve success in the management of VCoP. 相似文献
Purpose: The aim of the paper is to evaluate how advisory services stimulate the adoption of rural development policies (RDP) aiming at value creation.
Design/methodology/approach: By linking the use of agricultural extension services (AES) to policies for value creation, we will put forward an empirical analysis in Italy, with the aim of evaluating the capability of AES in bringing about higher access to rural policies for value creation in geographical indications (GI) contexts.
Findings: Results of our analyses evidence, on the one side, higher capability of funds attraction in GI areas. On the other side, path dependency schemes in accessing RDP are evident. Higher rates of access with the support of advisory services emerge, but only in traditional measure to fund farms’ investments. On the contrary, the use of AES does not facilitate access to other measures for value creation.
Practical implications: Our hypothesis is that AES include the support towards farm strategies of development through the adoption of RDP aiming at value creation in GI areas. Our analysis presents practical implications, in terms of a clear need for upgrading and broadening AES’ competencies in the field of projecting farm development and knowledge transfer in the field of funds to be obtained by RDP.
Theoretical implications: From a theoretical point of view, the paper may provide a contribution to theoretical debate by offering new insights into the role of advisory services in stimulating innovations and access to support policies.
Originality/value: This paper tries to fill a gap in the agricultural extension literature. We posit that the role of AES should comprehend a deeper knowledge (and knowledge transfer) concerning the opportunities provided by RDP. 相似文献
Within the theoretical framework of knowledge space theory, a probabilistic skill multimap model for assessing learning processes is proposed. The learning process of a student is modeled as a function of the student's knowledge and of an educational intervention on the attainment of specific skills required to solve problems in a knowledge domain. Model parameters are initial probabilities of the skills, effects of learning objects on gaining and losing the skills, and careless error and lucky guess probabilities of the problems. An empirical application shows that the model is effective in assessing knowledge and effectiveness of educational intervention at both classroom and student levels. Practical implications for teaching and learning are discussed.相似文献
