Search results for "mathematics"

Financial contagion through space-time point processes

2020

AbstractWe propose to study the dynamics of financial contagion by means of a class of point process models employed in the modeling of seismic contagion. The proposal extends network models, recently introduced to model financial contagion, in a space-time point process perspective. The extension helps to improve the assessment of credit risk of an institution, taking into account contagion spillover effects.

Non-parametric approaches to the impact of Holstein heifer growth from birth to insemination on their dairy performance at lactation one

2012

SUMMARYParametric approaches have been used widely to model animal growth and study the impact of growth profile on performance. Individual variation is often not considered in such approaches. However, non-parametric modelling allows this. Such an approach, based on spline functions, was used to study the importance of growth profiles from age 0 to 15 months (i.e. insemination) on milk yield and composition in primiparous cows. A dataset of 447 heifers was used for analysis of growth performance; 296 of them were also used to study impact on lactation. All of them originated from a French experimental herd and were born between 1986 and 2006. Clustering methods were also tested. Comparison…

Enhancing the Skill Sets for Increasing Youth Employability in Latvia

2022

Globalization, the development of new technologies, an ageing population, and the economic situation will continue influencing the skills mix; therefore, special attention has to be paid to young people to develop a skilled workforce responding to the current and future labour market needs, as well as to promote lifelong learning. The present study explores different concepts of employability and analyses employability skills of young people (aged 15-29) focusing on the most significant skills and the possible ways of enhancing their development. A survey of 405 youngsters and 81 representatives of institutions conducted in Latvia resulted in developing certain recommendations on how to inc…

Gifted Education in German-Speaking Countries

2011

AbstractThe purpose of this article is to provide the reader with a comprehensive yet detailed account of the current giftedness and gifted education situation in Austria, Germany, and Switzerland. It is concerned with four main research questions: (1) How is ‘giftedness’ defined in German-speaking countries? (2) How are gifted children identified? (3) What gifted education programs are there? (4) What are the empirical findings on these programs?The article is based on relevant journal articles, books, and webpages. The review of each of the topics mentioned above is accompanied by some critical comments.

INTEREST OF LATVIAN AND LITHUANIAN STUDENTS IN SCIENCE AND MATHEMATICS

2018

Interest is one of the most important components for a successful teaching/learning process; unfortunately, nowadays students’ interest in science and mathematics is decreasing. The aim of the research is to explore the cognitive interest of 15-year- old students in science and mathematics. Students in Latvia and Lithuania participated in the survey; the data show that students’ cognitive interest in this area in both countries is mediocre. The factor analysis was used to single out four main dimensions of the cognitive interest – interest in the context, interest in mathematics, inquiry interest and enthusiasm. Students’ interest is higher in issues connected with practical life, the solut…

Drift and evolutionary forces

2016

This arride analyzes the view of evolutionary theory as a theory of forces. The analogy with Newtonian mechanics has been challenged due to the alleged mismatch between drift and the other evolutionary forces. Since genetic drifr has no direction severa! authors tried to protect its status as a force: denying its lack of directionality, extending the notion of force and looking for a force in physics which also lacks of direction. I analyse these approaches, and although this strategy finally succeeds, this discussion overlooks the crucial point on the debate between causalists and statisticalists: the causal status of evolutionary theoty.; El presente artículo analiza la visión de la teorí…

2020

To validly assess teachers’ pedagogical content knowledge (PCK), performance-based tasks with open-response formats are required. Automated scoring is considered an appropriate ap-proach to reduce the resource-intensity of human scoring and to achieve more consistent scor-ing results than human raters. The focus is on the comparability of human and automated scor-ing of PCK for economics teachers. The answers of (prospective) teachers (N=852) to six open-response tasks from a standardized and validated test were scored by two trained human raters and the engine "Educational SCoRIng TOolkit" (ESCRITO). The average agreement between human and computer ratings, κw = .66, suggests a convergent …

Daily Fluctuations in Motivation

2019

Abstract. Intrinsic and extrinsic motivation are related to learning success and academic achievement of university students. Process models of self-regulated learning (SRL) suggest that daily academic motivation is affected by study satisfaction on the previous day. In this study, we conducted a secondary analysis of the data by Liborius et al. (2019) , in which the study behavior of a total of 105 students was surveyed daily over 154 days (including both the lecture period and non-lecture period). We tested a mediation model, assuming that SRL components (planning, self-efficacy, time investment, concentration, effort, and procrastination) increase intrinsic motivation and decrease extri…

Assessing Teacher’s Discourse Effect on Students’ Learning: A Keyword Centrality Approach

2020

The way that content-related keywords co-occur along a lesson seems to play an important role in concept understanding and, therefore, in students’ performance. Thus, network-like structures have been used to represent and summarize conceptual knowledge, particularly in science areas. Previous work has automated the process of producing concept networks, computed different properties of these networks, and studied the correlation of these properties with students’ achievement. This work presents an automated analysis of teachers’ concept graphs, the distribution of relevance amongst content-related keywords and how this affects students’ achievement. Particularly, we automatically extracted…

Design and validation of a music technology course for initial music teacher education based on the TPACK Model and the Project-Based Learning approa…

2019

This project outlines a design for, and presents an evaluation and validation of, an information and communication technology (ICT) training course on an initial teacher education programme for pre-service music teachers at a Spanish University. The primary objective was to improve initial teacher education in music technology through a course design with two key components: (1) constructivist learning through collaborative projects (PBL) and (2) the technological pedagogical content knowledge (TPACK) integration framework. The course saw students carry out four real-life projects, three of which involved the elaboration of educational material through the exclusive use of musical technolog…