Search results for "41"
showing 10 items of 3365 documents
A mahalanobis hyperellipsoidal learning machine class incremental learning algorithm
2014
Published version of an article in the journal: Abstract and Applied Analysis. Also available from the publisher at: http://dx.doi.org/10.1155/2014/894246 Open Access A Mahalanobis hyperellipsoidal learning machine class incremental learning algorithm is proposed. To each class sample, the hyperellipsoidal that encloses as many as possible and pushes the outlier samples away is trained in the feature space. In the process of incremental learning, only one subclassifier is trained with the new class samples. The old models of the classifier are not influenced and can be reused. In the process of classification, considering the information of sample's distribution in the feature space, the Ma…
SimReal+ i matematikkundervisning på universitetsnivå En studie av lærerens orkestreringer i relasjon til verktøyets nytteverdi for studentene
2015
Masteroppgave matematikkdidaktikk- Universitetet i Agder, 2015 This thesis is a case study conducted in the first year of engineering studies at the University of Agder. The course observed is physics, where the software SimReal+ is integrated into the teaching. The study focuses the mathematical part of the course related to differentiation and integration. In my study, I focus on both the lecturer and students taking the course. The study examines the teacher-orchestrations that can be identified in lectures and exercises, and perceptions students have related to the usefulness of SimReal+ and some teacher-orchestrations. My research questions are: 1. What types of teacher-orchestrations …
Dynamics of undergraduate engineering students’ learning activities in mathematics in an online and in a blended environment
2020
Paper IV is not published yet. This thesis reports from a research study which investigates the role of technology rich environments in undergraduate engineering students’ processes of learning mathematics. The research is founded within a naturalistic research paradigm (Lincoln, 2007) and adopts a case study design (Yin, 2014). The two cases under consideration comprise a small group of undergraduate electronics engineering students, selected as participants, from an online and a blended learning environment (Borba et al., 2016). The first case study of online environment incorporates an online system, MyMathLab, for homework and assessment, and tutorial videos for the lectures in a calcul…
Opportunities and Challenges when Students Work with Vocationally Connected Mathematics Tasks
2021
Students in vocational education in Norway take a compulsory mathematics course in the first year of their programme. This course offers opportunities for engaging with mathematics which can be highly relevant to practice in many workplaces. Working with vocationally connected mathematics tasks, tasks designed to draw on students’ future working contexts, is one way of trying to connect to students’ possible future vocations. This study aims to understand how students interact with such tasks with a particular emphasis on the roles of norms, authenticity and students’ positioning between the practices of school, the workplace and everyday life. In this study, I observed students working wit…
Omvendt undervisning i matematikk : en studie av elevers oppfatning av undervisningsmetoden
2013
Masteroppgave i matematikkdidaktikk- Universitetet i Agder 2013 Many teachers want to try out different teaching methods to find the one that makes students learn best. In today's society we surround ourselves with technology most of the day and there are several teaching methods that make use of technological tools in different ways. The “flipped classroom” is one of these and this is a method that has become more and more popular around the world and now also in Norway. In short, this is a method where students get theoretical review outside the classroom by using instructional videos, while solving problems and other learning activities are carried out at school with the teacher present.…
Forskningsbasert lærerutdanning i matematikk : hva betyr forskningsbasert undervisning for GLU studentene i MA-149?
2013
Masteroppgave i matematikkdidaktikk- Universitetet i Agder 2013 It is enshrined in law and regulation that all higher education should be research-based and research-oriented. How a research-based approach should be reflected in the education is not defined clearly, so there is room for interpretation that gives the institutions a certain freedom. In this study I examine how a mathematics education courses at the University of Agder is research-corrected and the consequences of that for the students. To see the significance the students believe a research-based course has, I through the study attempt to answer the following research questions: - What does mathematics education research mean…
Using the interactive learning environment aplusix for teaching and learning school algebra: A research experiment in a middle school
2011
Published version of an article from the journal: Turkish Online Journal of Educational Technology. Also available from the publisher: http://www.tojet.net/ Open Access Most software tools that have been developed with the aim of helping students to learn school algebra have not yet achieved successful results in classroom. Almost all of them are menu-based systems that provide transformation rules in menus and buttons. Aplusix is a new interactive software tool for learning school algebra. In contrast to existing software tools in mathematics education, Aplusix has been developed to allow students to freely build and transform algebraic expressions as they can do on paper. In addition, Apl…
Elevers matematikksamtaler : Læring i og mellom praksiser
2012
Doktorgradsavhandling ved Universitetet i Agder, Fakultet for teknologi og realfag The aim of this study “Students´mathematical conversations – Learning in and beween practices” is to examine students’ mathematical conversations and the students learning in and between practices. I study what characterizes mathematical conversations, and explore what potential the participation in such conversations in and outside school, have towards critical learning of mathematics. It is an expressed political goal that the subject of mathematics should be more practical in school. The government’s strategic document “Realfag for framtida, [MST for the future] 2010–2014”, describes company as an arena fo…
Sample Preparation to Determine Pharmaceutical and Personal Care Products in an All-Water Matrix: Solid Phase Extraction
2020
© 2020 by the authors.
Theoretical and Experimental Studies of Capillary Hysteresis in MCM-41
1996
Mesoporous materials of MCM-41 type are considered to be reference model adsorbents due to their regular pore structure. Nitrogen adsorption isotherms on MCM-41 are modeled using the Non-Local Density Functional Theory (NLDFT). The thermal dependence of the thermodynamic hysteresis predicted by the NLDFT is confirmed by experimental measurements. The nitrogen hysteresis on MCM-41 at temperatures below 77.4 K or in pores greater than 4 nm is associated with the metastability of the adsorption branch of the isotherm. In the hysteresis regime, the desorption branch is likely to be thermodynamically stable and is recommended for calculating pore size distributions.