Search results for "model."

Opettajan ohjauksen ja vuorovaikutuksen antaman tuen merkitys oppilaiden rakentaessa mallia magnetismista

2013

Assessing reading and online research comprehension: Do difficulties in attention and executive function matter?

2021

This study evaluated the relation between sixth graders' (N = 426) teacher-rated difficulties in attention and executive function (EF) and their comprehension skills. Reading comprehension was assessed with a multiple-choice task and online research and comprehension (ORC) with a problem-solving task. The analyses were controlled for gender, reading fluency and nonverbal reasoning. To investigate differences in students' performance between the tasks, comprehension skills in the multiple-choice task were also controlled for in the ORC task. Structural equation models showed that teacher-rated attention and EF difficulties were related to students' performance more in the problem-solving tas…

Is Training Effective? Evaluating Training Effectiveness in Call Centers

2015

Due to complex, competitive and crucial nature of call center jobs, organizations in services industry are spending more resources than ever on staff training and development. This is the case also in Call Center Representative Training. However, although organizations invest billions of dollars every year in training, no concrete evaluation framework exists to adequately quantify the impact of Call Center Representative (Henceforth CCR) training on actual job performance. Filling this gap, current study attempts to develop a framework to evaluate training programs in the context of call center industry using Kirkpatrick’s learning and training evaluation model. Developed framework is then …

Comparing Guidance via Implicit and Explicit Model Progressions in a Collaborative Inquiry-Based Learning Environment with Different-Aged Learners

2022

There is a need for research on the effect of different types of model progressions and learner age on learning and engagement in inquiry-based science settings. This study builds on the Scientific Discovery as Dual Search model to introduce less specific implicit model progression and compares them to the traditional explicit model progression. The data come from Finnish 8-, 10-, and 12-year-olds collaboratively using two different configurations of an inquiry-based learning environment about balance. Balance scale tasks were used to assess learning. Students also rated their situation-specific engagement. Both types of model progressions were beneficial for learning but there was no diffe…

Intra‐individual dynamics of lesson‐specific engagement: Lagged and cross‐lagged effects from one lesson to the next

2020

Background Student engagement denotes active participation in academic work through commitment and involvement in learning tasks (Appleton et al., 2006, Journal of School Psychology, 44, 427). This study looks at questions such as whether engagement experiences in one lesson have an effect on the next lesson. In the present study, process‐oriented analyses were conducted to examine lower secondary school students’ engagement experiences and the stability of those experiences from one lesson to the next. Aims (1) To what extent are students’ engagement experiences, in terms of behavioural and cognitive engagement, emotional engagement, and disaffection, stable from one lesson to the next (au…

Towards a learning community: understanding teachers’ mental models to support their professional development and learning

2021

Amidst societal, demographic and educational changes, teachers are expected to engage in professional development and learning (PDL) throughout their careers. This study explores school teachers’ mental models about their work in the framework of Senge’s learning organisation, aiming to support their PDL during curriculum reform and organisational changes. The study’s data comprise 41 semi-structured interviews with each teacher in one school community. These interviews were analysed using qualitative, data-driven yet theory-informed content analysis. In the first analysis phase, fragments of mental models concerning teachers’ work and their school community were explored. These fragments i…

Optical turbulence measurements and channel modeling of an indoor Free Space Optics link (Versione estesa)

2014

In this work, we propose an indoor experimental set-up able to generate several optical turbulence conditions in a Free Space Optics link. Using this set-up, we prove the effectiveness of an irradiance time-series generator based on the Gamma-Gamma model and able to predict the irradiance fluctuations at the receiver, under both weak and moderate turbulence conditions.

Optical turbulence measurements and channel modeling of an indoor Free Space Optics link (Abstract)

2014

Surrogate-assisted multicriteria optimization: Complexities, prospective solutions, and business case

2017

Complexity in solving real-world multicriteria optimization problems often stems from the fact that complex, expensive, and/or time-consuming simulation tools or physical experiments are used to evaluate solutions to a problem. In such settings, it is common to use efficient computational models, often known as surrogates or metamodels, to approximate the outcome (objective or constraint function value) of a simulation or physical experiment. The presence of multiple objective functions poses an additional layer of complexity for surrogate-assisted optimization. For example, complexities may relate to the appropriate selection of metamodels for the individual objective functions, extensive …

Acs modeļa optisko aberāciju novērtējums

2017

Bakalaura darbs ir uzrakstīts uz 36 lapaspusēm latviešu valodā. Tas satur 11 attēlus, 1 tabula, 17 literatūras avotus. Darba mērķis: Novērtēt aberāciju daudzumu acs modelī ar šķidru polimēra lēcu un salīdzināt ar lielas emetropas populācijas mērijumiem. Darba uzdevumi: Izveidot Shaka hartmana aborametra shēmu; veikt aberāciju simulāciju MATLAB vidē; salīdzināt acs modeļa aberācijas ar lielas populācijas aberāciju apjomu. Metode: Acs modelim tika mērīts aberāciju apjoms. Tika simulēti attēli, kuriem noteiktas kontrasta līknes. Dati tika apkopoti un salīdzināti ar pētījumiem par aberāciju apjomu lielā populācijā. Rezultāti: Acs modeļa vidējais komas aberācijas daudzums 0,179 ± 0,016 µm un trī…