Search results for "TEM analysis"

Strategies for Active Learning to Improve Student Learning and Attitudes Towards Physics

2021

Over the last several years, active learning methods and strategies have received considerable attention from the educational community and are commonly presented in the related literature as a credible solution to the reported lack of efficacy of more “traditional” educative approaches. Research has shown that a possible factor is the strongly contextualized nature of active learning that focuses on the interdependence of situation and cognition. In this paper, we report the results of a Symposium with different contributions in the field of research on active learning. We start with a system analysis of the mental processes involved in learning physics which explains how active learning i…

Standardized rater training for the Hamilton Depression Rating Scale (HAMD-17) in psychiatric novices.

2003

Abstract Background: Despite the long and widespread use of the Hamilton Depression Rating Scale (HAMD), standardized reliability studies in inexperienced raters are not available. Methods: Rater training was carried using three videotaped interviews with depressed patients in 21 psychiatric novices who had negligible previous experience with the HAMD. Chance-corrected coefficients of rating agreement with expert standards (weighted κ , ICC) were computed for single items and the total score of the HAMD. Results: The results demonstrate sufficiently high interrater reliability ( κ >0.60) for most of the HAMD items and the total score (ICC=0.57–0.73). Three standardized HAMD training session…

Brief assessment of subjective health complaints: Development, validation and population norms of a brief form of the Giessen Subjective Complaints L…

2017

Abstract Objective Although there is no causal relationship to medical morbidity, routine clinical assessment of somatic symptoms aids medical diagnosis and assessment of treatment effectiveness. Regardless of their causes, somatic symptoms indicate suffering, distress, and help-seeking behavior. The aim of the present study was to develop and validate a brief self-report questionnaire to assess somatic symptom strain. Methods A brief form of the Giessen Subjective Complaints List (GBB-8) was developed and validated in a large population sample representative of the Federal Republic of Germany ( N  = 2008). Psychometric analyses included confirmation of factor structure, classical item anal…

Space, scale and accents : constructing migrant identity in Beijing

2007

Off-line Programming and simulation for automatic robot control software generation

2007

In this paper an off-line programming approach for welding robots is presented. The approach is based on the integration of a software tool for robot simulation and an user-friendly interface for automatic generation of the control program. The user can graphically arrange the components in a robotic work-cell and simulate the movements and operations of robotic arms before converting motions and operating sequences in controller-specific tasks. This methodology guarantees high level of flexibility of the robotic system when high variety of work-pieces needs to be welded. The approach has been implemented and tested in a real welding work-cell.

Advantages of the Rasch measurement model in analysing educational tests:an applicator's reflection

2011

Educational achievement is a very important issue for parents, teachers, and the government. An accurate measurement plays a very important role in evaluating achievement fairly, and, therefore, analysis methods have been developed considerably in recent years. Education based on long-time learning processes forms a fruitful base for item tests, as it opens up possibilities to design a nearly unlimited number of items. There are several methods available to analyse such tests, but which method is the most useful and in which situation? The Rasch measurement from the Institute for Object Measurement (IOM) has pointed out to be the most useful in evaluating individual items and their function…

Liberal and Conservative Differential Item Functioning Detection Using Mantel-Haenszel and SIBTEST: Implications for Type I and Type II Error Rates

2004

The aim of this work was to determine, in terms of Type I and Type II error rates, the risks of applying various statistical procedures for evaluating differential item functioning. To this end, the authors carried out a simulation study in which the Mantel-Haenszel and SIBTEST procedures were applied in conjunction. The variables manipulated were sample size and distribution of ability between groups. Results indicated that, although there was a high rate of agreement between the procedures, the joint Type I and Type II error rate may vary substantially from that obtained when each of the procedures was applied separately. Furthermore, the authors analyzed empirical data to obtain informat…

Validation of the group nuclear safety climate questionnaire.

2013

Abstract Introduction Group safety climate is a leading indicator of safety performance in high reliability organizations. Zohar and Luria (2005) developed a Group Safety Climate scale (ZGSC) and found it to have a single factor. Method The ZGSC scale was used as a basis in this study with the researchers rewording almost half of the items on this scale, changing the referents from the leader to the group, and trying to validate a two-factor scale. The sample was composed of 566 employees in 50 groups from a Spanish nuclear power plant. Item analysis, reliability, correlations, aggregation indexes and CFA were performed. Results Results revealed that the construct was shared by each unit, a…

Distribution grid analysys through PSAT open source tools

2015

In this paper a study of an electrical distribution grid with presence of renewable energy sources performed using the Power System Analysis Tool is presented. The paper describes the load flow analysis of a real existing grid owned by the Italian DSO “ENEL Distribuzione SpA” and located in an urban area.

Use without training: A case study of evidence-based software design for intuitive use

2019

This paper reviews intuitive software design and outlines the development of an instrument for analysts to evaluate the intuitiveness of software design. Current intuition research outlines three requirements for intuitive use: (a) existing experiential domain knowledge and skills, (b) an unexplainable perception that a novel situation is contextually familiar, and (c) successful application of users’ previously acquired experiential knowledge and skills. A case study illustrates how these requirements can be specified, implemented, and evaluated. Questions to evaluate the characteristics of intuitive design and use resulted in an intuitive use evaluation of 3.2 on a scale of 0–4, indicatin…