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排序方式: 共有173条查询结果,搜索用时 31 毫秒
131.
132.
Bernadette Paula Luengo Kanacri Concetta Pastorelli Eriona Thartori Carolina Lunetti Laura Di Giunta Dario Bacchini 《Parenting, science and practice》2021,21(1):24-46
SYNOPSIS Objective. This article examined two-wave longitudinal paths among maternal self-efficacy, maternal warmth, and early adolescents’ prosocial behavior. Design . Participants were 194 Italian mother/child dyads from 9–13 years at the first assessment and 12–15 years at the second assessment. Using a two-wave longitudinal design, the present study tested cross-lagged paths among maternal self-efficacy, warmth, and early adolescents’ prosocial behavior controlling for the stability of these variables and their concurrent associations. Results . Maternal warmth mediated the link between maternal self-efficacy and adolescents’ prosocial behavior, and bi-directional effects between maternal self-efficacy and maternal warmth were found. Conclusions . These findings support a parent-driven model in the promotion of prosocial behaviors across early adolescence and a general need to consider simultaneously parental cognitions (maternal self-efficacy) and actions (maternal warmth) in explaining adolescents’ prosocial behaviors. Implications for parenting program interventions are discussed. 相似文献
133.
Leticia Losano Dario Fiorentini Mónica Villarreal 《Journal of Mathematics Teacher Education》2018,21(3):287-315
This study is focused on a period that poses several challenges for the development of mathematics teachers’ professional identities and agency: their first year of teaching in schools. During this period, beginning mathematics teachers confront tensions and contradictions among the principles, ideals, and experiences encountered during pre-service education and the demands, and restrictions of their teaching practice in schools. This article approaches this topic by developing an interpretative case study centered on one novice mathematics teacher, Sol. The aim is to describe and understand the development of Sol’s professional identity and agency during her first teaching year. Considering identity development as a diachronic phenomenon, we carry out a narrative analysis of the research data. The findings show that Sol developed her professional identity and agency through a process that gathered together the teaching practices possible inside her school, the positions she could negotiate as a newcomer inside the institution, and the cultural practices and discourses embodied during pre-service education. The results bring to the forefront the profound and tense interactions between the intimate and personal terrain of mathematics teachers and the social and cultural world of the schools where they work. Sol’s case also contributes to understanding the role that a robust pre-service education can play in the development of beginning teachers’ professional identities and in the possibility they could become agents of transformation in their schools. 相似文献
134.
Andrew R. Novak Kyle J. M. Bennett Job Fransen Ben J. Dascombe 《Journal of sports sciences》2018,36(1):71-78
This study adopted a multidimensional approach to performance prediction within Olympic distance cross-country mountain biking (XCO-MTB). Twelve competitive XCO-MTB cyclists (VO2max 60.8 ± 6.7 ml · kg?1 · min?1) completed an incremental cycling test, maximal hand grip strength test, cycling power profile (maximal efforts lasting 6–600 s), decision-making test and an individual XCO-MTB time-trial (34.25 km). A hierarchical approach using multiple linear regression analyses was used to develop predictive models of performance across 10 circuit subsections and the total time-trial. The strongest model to predict overall time-trial performance achieved prediction accuracy of 127.1 s across 6246.8 ± 452.0 s (adjusted R2 = 0.92; P < 0.01). This model included VO2max relative to total cycling mass, maximal mean power across 5 and 30 s, peak left hand grip strength, and response time for correct decisions in the decision-making task. A range of factors contributed to the models for each individual subsection of the circuit with varying predictive strength (adjusted R2: 0.62–0.97; P < 0.05). The high prediction accuracy for the total time-trial supports that a multidimensional approach should be taken to develop XCO-MTB performance. Additionally, individual models for circuit subsections may help guide training practices relative to the specific trail characteristics of various XCO-MTB circuits. 相似文献
135.
136.
Dario Camuffo Emanuela Pagan Adriana Bernardi Francesca Becherini 《Journal of Cultural Heritage》2004,5(4):409-416
The impact of lighting, heating and people in re-using historical buildings are discussed for the case study concerning the ceremony room (i.e. the Giant Hall) of a mediaeval palace in Padova. The Hall has substantially four major problems for conservation: (i) the impact of heating, lighting and people when the room is used; (ii) many cracks on the oak panels of the coffered ceiling; (iii) the soiling by dust and soot particles deposited on the frescoes; (iv) the stained glass windows. A microclimate study was performed to know the impact of the environmental variables, and the use of the room, on the artworks preserved inside. The study has proved the impact of the lamps (both incandescence and compact fluorescent lamps) on the ceiling, the penetration of external air in the room, the heat and the moisture released by people, the impact of sunshine through windows and the scatter diagram of the daily cycles in temperature (T) and relative humidity (RH). During winter concerts, the strips of lead which are wrapped round the edge of the cut glass pieces in stained glass windows easily drop below the dew point and form condensation, starting corrosion. A discussion concerns the allowed variability, which should not exceed risk thresholds. A safe interval can be established within the area determined by the most frequent T and RH natural cycles. In fact, both of the cycles were compatible with the artefacts, or the artefacts were already damaged to allow the exceeding dimensional changes. Attention should be paid in the variability external to this area, especially approaching or exceeding a limit equal to twice the mode of the natural variability. 相似文献
137.
Sliding mode regulator as solution to optimal control problem for non-linear polynomial systems 总被引:1,自引:0,他引:1
This paper presents the optimal control problem for a non-linear polynomial system with respect to a Bolza-Meyer criterion with a non-quadratic non-integral term. The optimal solution is obtained as a sliding mode control, whereas the conventional polynomial-quadratic regulator does not lead to a causal solution and, therefore, fails. Performance of the obtained optimal controller is verified in the illustrative example against the conventional polynomial-quadratic regulator that is optimal for the quadratic Bolza-Meyer criterion. The simulation results confirm an advantage in favor of the designed sliding mode control. 相似文献
138.
Ivana Lapi Dunja Rogi Nora Nikolac Gabaj Katarina Kaji Nena Peran Lada Surjan Anamarija uras Valentina Cesar Kocijan Nada Bilopavlovi Fran Smai Mario tefanovi Ivanka Ostroki Leida Tandara Milena Krnjai-Tadijanovi Ivan Gornik Hrvoje Pintari Daniela Marasovi Krstulovi Blaenka Miki Dario Raheli 《Biochemia medica : ?asopis Hrvatskoga dru?tva medicinskih biokemi?ara / HDMB》2022,32(1)
IntroductionBased on the hypothesis that there is a substantial rate of adults with prediabetes and undiagnosed diabetes mellitus (DM), our aim was to perform haemoglobin A1c (HbA1c)-based screening in a cohort of Croatian adults and estimate the prevalence of prediabetes and undiagnosed DM according to American Diabetes Association criteria.Materials and methodsThis multi-center, cross-sectional study performed in six Croatian hospitals included 5527 patients aged 40 to 70 years admitted to the Emergency Department or undergoing a primary care check-up. Haemoglobin A1c was measured from leftover whole blood samples using the enzymatic method on either Alinity c or Architect c-series analyser (Abbott Laboratories, Chicago, USA). Haemoglobin A1c between 39-47 mmol/mol was classified as prediabetes, while ≥ 48 mmol/mol as undiagnosed DM.ResultsAfter exclusion of 435 patients with known DM, the final cohort included 5092 patients (median age 57; 56% males). A total of 882 (17.3%) patients had HbA1c values between 39 and 47 mmol/mol. There were 214 (4.2%) patients with HbA1c ≥ 48 mmol/mol. Prediabetes prevalence ranged from 14.2% to 20.5%, while undiagnosed DM from 3.3% to 7.3%, with statistically significant differences among settings (P < 0.001). Age-stratified analysis showed that prediabetes and undiagnosed DM prevalence increase with age (P < 0.001), being 25.4% and 5.8%, respectively, in patients aged 60 to 70 years.ConclusionUnderlying impairment of glucose metabolism was identified in about one in five adults, with significant number of patients with already overt DM. These results should serve as a starting point for further steps directed towards promotion of preventive measures for DM in Croatia. 相似文献
139.
Dario SAMBUNJAK Mirjana HUIĆ Darko HREN Milica KATIĆ Ana MARUŠIĆ Matko MARUŠIĆ 《Learned Publishing》2009,22(1):57-70
Scholarly journals, especially in non‐English‐speaking countries, may perform very different functions depending on whether they are published for national or international audiences. Four hundred and sixty‐six academic physicians and non‐academic general practitioners in Croatia were surveyed on their knowledge about two Croatian medical journals: Lije?ni?ki vjesnik (published in Croatian) and Croatian Medical Journal (published in English). The physicians were also surveyed about the importance of all national and international journals published in Croatia, and the types of articles they thought should be published in these journals. More respondents rated national (n = 329, 72.6%) than international journals (n = 275, 63.5%, P < 0.001, Wilcoxon test) as very important for the medical profession. On the other hand, publishing in international journals was more often rated as important than publishing in national journals (n = 184, 42.5% vs. n = 125, 27.8%; P < 0.001, Wilcoxon test). Guidelines for clinical practice were rated as the most important publication item in national journals, and original scientific articles in international journals. 相似文献
140.
In this work we exploit a long-in-time panel of Spanish manufacturing firms observed during the period 1990–2012 to examine the long-run contribution of innovation persistence to sales growth and market share dynamics. We examine two main research questions. First, do persistent innovators grow more than other firms? Second, do persistent innovators show more persistent growth patterns over time compared to other firms? We find negative answers to both questions: firms that persistently innovate over the first decade, do not grow more and do not display more persistent growth dynamics in the succeeding years, regardless of whether innovation persistence is defined in terms of R&D, patenting activity, or product or process innovation. These findings lend support to luck and random theories of firm growth, in turn challenging innovation persistence theories commonly suggesting that persistent innovators enjoy large and sustained comparative advantages. 相似文献