Application of antigenic biomarkers for Mycobacterium tuberculosis     

Rodríguez-Hernández  Elba  Quintas-Granados  Laura Itzel  Flores-Villalva  Susana  Cantó-Alarcón  Jorge Germinal  Milián-Suazo  Feliciano 《Journal of Zhejiang University. Science. B》2020,21(11):856-870

Journal of Zhejiang University-SCIENCE B - The study and characterization of biomolecules involved in the interaction between mycobacteria and their hosts are crucial to determine their roles in...  相似文献   

Affective influences in the knowledge of mathematics   总被引：1，自引：0，他引：1  

Inés María Gómez-Chacón 《Educational Studies in Mathematics》2000,43(2):149-168

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The Identification of High Ability Students: results of a detection process in Navarra (Spain)     

Javier Tourón  Charo Repáraz  Felisa Peralta 《High Ability Studies》1999,10(2):163-181

This article focuses on the development and analysis of a two‐stage early detection process (screening and diagnostic) for high ability students carried out in the region of Navarra (Spain) on a random sample of 1,274 elementary school students. Spanish versions of the Raven Progressive Matrices (SPM), the Renzulli Scales for Rating Behavioural Characteristics of Superior Students (SRBCSS), and participants’ academic achievement were the main variables in the initial screening phase. The Spanish edition of WISC‐R, as well as the Young Children's Academic Intrinsic Motivation Inventory (Gottfried, 1986), and the Self‐concept Questionnaire (Marsh, 1988), were the main variables in the diagnostic phase. The findings of the detection process show that the WISC‐R results were incompatible with those expected in accordance with the normal distribution of IQs. Results may suggest a clear problem with scoring rules, the Spanish norms for the test, or both. These possibilities are discussed in light of the results obtained. The paramount importance of validating and developing adequate instruments for the identification of the gifted is emphasized.  相似文献   

Sensitivity of instrumental responses to an upshift in water deprivation     

Matías López  Concepción Paredes-olay 《Learning & behavior》1999,27(3):280-287

The role of incentive learning in instrumental performance following an upshift in the degree of water deprivation was analyzed in three experiments. In Experiments 1A and 1B, rats trained to perform an instrumental action reinforced by either sucrose or maltodextrin solutions when in a low-deprivation state were shifted to a high-deprivation state and tested in extinction. This shift in water deprivation increased performance only if the animals had been exposed to the reinforcer in the high-deprivation state prior to testing. In Experiment 2, the role of the instrumental contingency in mediating the preexposure effect observed in the first two studies was examined by training rats to make two instrumental actions for different outcomes. The preexposure experience with the outcomes produced a relative increase in performance of the action reinforced with the incentive preexposed in the high-deprivation state when a choice between the two response alternatives was conducted in that state. These experiments support the conclusion that instrumental performance following revaluation of the reinforcer by an upshift in the level of thirst depends on a process of incentive learning.  相似文献   

L1 versus L2 online intercultural exchanges for the development of 21st century competences: The students’ perspective     

Ana Sevilla-Pavón 《British journal of educational technology : journal of the Council for Educational Technology》2019,50(2):779-805

The myriad of possibilities brought about by the advent of Web 2.0 in terms of communication and interaction have revolutionised educational practices over the past few years. One of the most promising educational approaches resulting from this revolution is online intercultural exchange or telecollaboration, which has been reported to contribute towards the development of 21st century competences. Many of the benefits of online intercultural exchange have been extensively explored in the literature and numerous studies have been carried out. However, very few studies have looked into the differences between an L1 or mother tongue exchange and an L2 or lingua franca exchange as far as the development of 21st century competences is concerned. This paper aims at filling this gap by exploring and comparing the results of two configurations of Online Intercultural Exchange carried out over a period of 4 months with 125 participants. The results indicate that the L1 exchange was perceived as more beneficial than the L2 exchange for most of the competences studied (linguistic and communicative competences, Language for Specific Purposes learning, learner autonomy and teamwork). Meanwhile, the L2 exchange was considered as more beneficial for the development of intercultural competence. Furthermore, no significant differences were observed regarding digital literacy.  相似文献   

Measuring the influence of mere exposure effect of TV commercial adverts on purchase behavior based on machine learning prediction models     

Elisa Claire Alemán Carreón  Hirofumi Nonaka  Asahi Hentona  Hirochika Yamashiro 《Information processing & management》2019,56(4):1339-1355

Since its introduction, television has been the main channel of investment for advertisements in order to influence customers purchase behavior. Many have attributed the mere exposure effect as the source of influence in purchase intention and purchase decision; however, most of the studies of television advertisement effects are not only outdated, but their sample size is questionable and their environments do not reflect reality. With the advent of the internet, social media and new information technologies, many recent studies focus on the effects of online advertisement, meanwhile the investment in television advertisement still has not declined. In response to this, we applied machine learning algorithms SVM and XGBoost, as well as Logistic Regression, to construct a number of prediction models based on at-home advertisement exposure time and demographic data, examining the predictability of Actual Purchase and Purchase Intention behaviors of 3000 customers across 36 different products during the span of 3 months. If we were able to predict purchase behaviors with models based on exposure time more reliably than with models based on demographic data, the obvious strategy for businesses would be to increase the number of adverts. On the other hand, if models based on exposure time had unreliable predictability in contrast to models based on demographic data, doubts would surface about the effectiveness of the hard investment in television advertising. Based on our results, we found that models based on advert exposure time were consistently low in their predictability in comparison with models based on demographic data only, and with models based on both demographic data and exposure time data. We also found that there was not a statistically significant difference between these last two kinds of models. This suggests that advert exposure time has little to no effect in the short-term in increasing positive actual purchase behavior.  相似文献   

Predictors and outcomes of core and peripheral sport motivation profiles: A person-centered study     

István Tóth-Király  Camille Amoura  Beáta Bőthe  Gábor Orosz  Adrien Rigó 《Journal of sports sciences》2020,38(8):897-909

ABSTRACT

While previous studies highlighted the importance of the different motivations for doing sports as proposed by self-determination theory, less emphasis has been put on the simultaneous presence of multiple motivations within the same individual. Therefore, the present study aimed to investigate the complex interaction of sport motivations and to identify core (common) and peripheral (uncommon) profiles of people engaged in sports based on a combination of motivations. To achieve this goal, latent profile analysis, a person-centered approach, was performed on responses from 506 participants engaged in sports. For better understanding the extracted profiles, basic psychological need fulfillment was included as profile predictor, while subjective vitality and various engagement-related indicators as outcomes. Four core and peripheral profiles were identified: Moderately Motivated, Highly Motivated, Amotivated, and Poorly Motivated. Contrary to theory, introjected regulation clustered more closely with self-determined motivations. Profile membership was significantly predicted by global need fulfillment, autonomy satisfaction as well as, to a smaller extent, autonomy, relatedness, and competence frustration. The four profiles differed along vitality and some, but not all, engagement-related outcomes.  相似文献   

Do teaching innovation projects make a difference? Assessing the impact of small-scale funding     

Feixas  Mònica  Martínez-Usarralde  María-Jesús  López-Martín  Ramón 《Tertiary Education and Management》2018,24(4):267-283

Tertiary Education and Management - This article presents the outcomes of a research study carried out during 2015–2016 at the University of Valencia (Spain) to understand the factors...  相似文献   

Taking the Teachers to School! Critical Consciousness Emerging: A Qualitative Exploration of Mexican American Youth’s Social Justice Orientation Development     

Gómez  Rachel F.  Cammarota  Julio 《The Urban Review》2022,54(3):339-366

The Urban Review - Empirical research demonstrates that Chicanx students thrive in an educational setting where Western histories are de-centered, and the core objectives of the curricula are the...  相似文献   

Distinct Profiles of Relationships With Mothers,Fathers, and Best Friends and Social-Behavioral Functioning in Early Adolescence: A Cross-Cultural Study     

Wonjung Oh  Julie C. Bowker  António J. Santos  Olívia Ribeiro  Maryse Guedes  Miguel Freitas  Hyoun K. Kim  Seowon Song  Kenneth H. Rubin 《Child development》2021,92(6):e1154-e1170

Adolescents’ dyadic relationships are likely influenced by the cultural context within which they exist. This study applied a person-oriented approach to examine how perceived support and negativity were manifested across youths’ relationships with mothers, fathers, and best friends, simultaneously, and how distinct relationship profiles were linked to adaptive and maladaptive functioning (aggression, anxious-withdrawal, prosociality) within and across cultures. Participants resided in metropolitan areas of South Korea, the United States, and Portugal (10–14 years; N = 1,233). Latent profile analyses identified relationship profiles that were culturally common or specific. Additional findings highlighted commonality in the relations between a high-quality relationship profile and adaptive functioning, as well as cultural specificity in the buffering and differential effects of distinct relationship profiles on social-behavioral outcomes.  相似文献