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Academic literature on the topic 'Educational tests and measurements – Research – Namibia'
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Journal articles on the topic "Educational tests and measurements – Research – Namibia"
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Budakova, Anna V., Maxim V. Likhanov, Teemu Toivainen, et al. "Measuring Spatial Ability for Talent Identification, Educational Assessment, and Support: Evidence from Adolescents with High Achievement in Science, Arts, and Sports." Psychology in Russia: State of the Art 14, no. 2 (2021): 59–85. http://dx.doi.org/10.11621/pir.2021.0205.
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Background. Spatial ability (SA) is a robust predictor of academic and occupational achievement. The present study investigated the psychometric properties of 10 tests for measuring of SA in a sample of talented schoolchildren. Objective. Our purpose was to identify the most suitable measurements for SA for the purpose of talent identification, educational assessment, and support. Design. Our sample consisted of 1479 schoolchildren who had demonstrated high achievement in Science, Arts, or Sports. Several criteria were applied to evaluate the measurements, including an absence of floor and ceiling effects, low redundancy, high reliability, and external validity. Results. Based on these criteria, we included the following four tests in an Online Short Spatial Ability Battery “OSSAB”: Pattern Assembly; Mechanical Reasoning; Paper Folding; and Shape Rotation. Further analysis found differences in spatial ability across the three groups of gifted adolescents. The Science track showed the highest results in all four tests. Conclusion. Overall, the study suggested that the Online Short Spatial Ability Battery (OSSAB) can be used for talent identification, educational assessment, and support. The analysis showed a unifactorial structure of spatial abilities. Future research is needed to evaluate the use of this battery with other specific samples and unselected populations.
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Nowak-Dzieszko, K., and T. Kisilewicz. "Internal particulate matter pollution in educational building." E3S Web of Conferences 172 (2020): 06008. http://dx.doi.org/10.1051/e3sconf/202017206008.
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The authors undertook research on the proper strategy of operation of educational building with gravitational ventilation in historic city center with high concentration of particulate matter PM10 and PM 2.5. In this facility the momentary increase in carbon dioxide concentration is often very high, and at the same time health requirements regarding atmospheric aerosol should be absolutely met. That is why long-term measurements of PM concentration outside and inside, as well as carbon dioxide concentration inside were carried out. CO2 was used also as a tracer gas for measurement of air change intensity. The article presents the first results of these tests and a correlation that occurs between the external and internal concentration of particulate matter PM 10 and PM 2.5. Due to a significant filtration effect of the external building envelope and particle deposition a potential conflict between required gravitational ventilation intensity and internal air pollution with particulate matters was partially reduced.
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Ralph, Vanessa R., and Scott E. Lewis. "Introducing randomization tests via an evaluation of peer-led team learning in undergraduate chemistry courses." Chemistry Education Research and Practice 21, no. 1 (2020): 287–306. http://dx.doi.org/10.1039/c9rp00187e.
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The methodological limitations education researchers face in the evaluation of reformed instruction have led to debates as to the evidence advancing evidence-based practices. To conduct more effective research, methodological pluralism in the evaluation of educational reforms can be used to complement the strengths and limitations of a corpus of literature informing the impact of an evidence-based practice. This study seeks to introduce randomization tests, a nonparametric statistical analysis incorporating a random-assignment component that can be applied to a single-subject (N = 1) research design, as a methodology to be counted amongst evaluations of instructional reforms. To demonstrate the utility of this approach, an evaluation of peer-led team learning (PLTL) for classes of second-semester general chemistry spanning 7 semesters was conducted using randomization tests. The design contributes novel understandings of PLTL including differences in effectiveness across instructors, trends in effectiveness over time, and a perspective as to the appropriateness of assumptions concerning statistical independence when applied to educational settings. At the research setting, four instructors (each constituting an individual case) alternated implementing lecture-based instruction and PLTL by term. Across these four instructors, the treatment effects of peer-led team learning when compared to lecture-based instruction ranged in impact (from d = 0.233 to 2.09). For two instructors, PLTL provided a means by which to significantly reduce the differential performances observed of students with variable preparations in mathematics, thereby advancing the equitability of their courses. Implications of this work include the incorporation of single-subject research designs in establishing evidence-based instructional practices, the effectiveness of PLTL as interpreted in a methodologically pluralistic context of the research literature, and enacting measurements of equity when gauging the success of instructional reforms in science. Further, this introduction to randomization tests offers another methodology for the evaluation of instructional reforms more widely applicable in educational settings with smaller sample sizes (e.g., reforms conducted within a single classroom or upper-level courses with small class sizes).
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ARLANDINI, CLAUDIO D., MATTEO J. BOSCHINI, and ANDREA MATTASOGLIO. "A HIGH-PERFORMANCE MIXED-TECHNOLOGY LAN FOR EDUCATION AND RESEARCH." International Journal of Modern Physics C 12, no. 04 (2001): 459–67. http://dx.doi.org/10.1142/s0129183101002231.
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In this work we describe a series of performance tests on different architectures of high bandwidth local area networks, contemporarily in use at C.I.L.E.A. (Inter-University Consortium for Automatic Elaboration of Lombardy) to connect multi-processor machines devoted to educational and research purposes, such as fluido-dynamic and mechanical simulations. This LAN is essentially made out of a standard FDDI ring, and an HyperFabric backbone. HyperFabric is a Hewlett-Packard high performance network system bus, with a declared maximum bandwidth of 2.5 Gbit/s full duplex per link. We present a comparison, in terms of effective bandwidth, average throughput and CPU consumption of the above mentioned network systems. Furthermore we also describe the effects, in terms of transfer efficiency, of such a mixed environment, in which different systems co-exist and must often be cross-walked by various applications, as backups and mass storage access. Measurements and comparisons are made using Open Software tools like netperf and HetPIPE.
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Glas, Cees A. W. "Item response theory in educational assessment and evaluation." Mesure et évaluation en éducation 31, no. 2 (2014): 19–34. http://dx.doi.org/10.7202/1025005ar.
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Item response theory provides a useful and theoretically well-founded framework for educational measurement. It supports such activities as the construction of measurement instruments, linking and equating measurements, and evaluation of test bias and differential item functioning. It further provides underpinnings for item banking and flexible test administration designs, such as multiple matrix sampling, flexi-level testing, and computerized adaptive testing. First, a concise introduction to the principles of IRT models is given. The models discussed pertain to dichotomous items (items that are scored as either correct or incorrect) and polytomous items (items with partial credit scoring, such as most types of openended questions and performance assessments). Second, it is shown how an IRT measurement model can be enhanced with a structural model, such as, for instance, an analysis of variance model, to relate data from achievement and ability tests to students’ background variables, such as socio-economic status, intelligence or cultural capital, to school variables, and to features of the schooling system. Two applications are presented. The first one pertains to equating and linking of assessments, and the second one to a combination of an IRT measurement model and a multilevel linear model useful in school effectiveness research.
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Et al., Afdal Afdal. "The TIRI: A Rasch-Validated Revision of Resilience for Victims of Natural Disasters." Psychology and Education Journal 58, no. 1 (2021): 4121–32. http://dx.doi.org/10.17762/pae.v58i1.1476.
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This article presents the validation of Taufik & Ifdil Resilienci Inventory (TIRI) in the context of post-natural disasters and in Indonesian. The quantitative research tests validity of TIRI with Rasch model analysis, TIRI is used to measure the resilience of students affected by natural disasters by the number items 43 and developed by the Indonesian Institute for Counseling, Education and Therapy (IICET) research team which is coordinated by the Research Center (Universitas Negeri Padang). This research was conducted 3 trials/cycle, all respondents per cycle were spread in 6 regencies in Kota in Indonesia. Instrument resilience for victims of natural disasters is valid and reliable (person reliability 0.68 and item reliability 0.99) with a total 25 items (Raw variance explained by measures = 23.5% with expected values of 24.3%) valid from the total items of 43 items, that means items already represent measurements for the resilience of victims of natural disasters.
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Jokić, Dejan, Slobodan Lubura, Milica Ristović, Stevan Stankovski, Vladimir Rajs, and Harun Šiljak. "What’s in the Box: Design of an Open Didactic Robot Environment." Electronics 9, no. 12 (2020): 2090. http://dx.doi.org/10.3390/electronics9122090.
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We present a realization of a didactic robot environment for robot PUMA 560 for educational and research purposes. Robot PUMA 560 is probably the mathematically best-described robot, and therefore it is frequently used for research and educational purposes. A developed control environment consists of a robot controller and teach pendant. The advantage of using a personally developed solution is its open structure, which allows various tests and measurements to be performed, and that is highly convenient for educational and research purposes. The motivation behind the design of this personal didactic robot control environment arose from a survey for students after the first Summer School on Mechatronic Systems. The student questionnaire revealed severe discrepancies between theory and practice in education. Even though the primary purpose of the new control environment for robot PUMA 560 was research, it was established that it is a viable lab resource that allows for the connection between theoretical and industrial robotics. It was used for the duration of four Summer Schools and university courses. Since then, it has been fully integrated into International Burch University’s Electrical and Electronics Engineering curriculum through several courses on the bachelor and master levels for multidisciplinary problem-based learning (PBL) projects.
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Andreev, Viktor, Alexander Fominikh, Igor Konovalov, Alexander Morozov, and Alina Snegireva. "COMPARATIVE STUDY OF THE FUNCTIONAL STATE OF CARDIORESPIRATORY SYSTEM AND PHYSICAL FITNESS OF SCHOOLCHILDREN AGED 13 TO 16 YEARS WITH CHRONIC RESPIRATORY DISORDERS AND THEIR HEALTHY PEERS." SCIENCE AND SPORT: current trends 8, no. 4 (2020): 33–39. http://dx.doi.org/10.36028/2308-8826-2020-8-4-33-39.
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Purpose of research. Comparative study of the cardiorespiratory activity and physical fitness of schoolchildren aged 13 to 16 years with chronic respiratory disorders and their healthy peers. Methods and organization of research. The research process included the following methods: analysis of scientific and methodological literature with subsequent systematization of data, pedagogical observation, functional tests, pedagogical testing, anthropometric measurements, and mathematical statistics. Research results and discussion. This article contains the findings of a study investigating cardiorespiratory system and physical fitness of both male and female schoolchildren aged 13 to 16 years with chronic respiratory disorders. We carried out a comparative analysis of the obtained indicators of studied children and their peers without health problems. We applied the functional tests determining the activity of cardiorespiratory system to identify adaptive capacities of children to physical exercise. We used special tests to assess physical fitness. The study revealed that the cardiorespiratory activity and physical fitness levels of schoolchildren with chronic respiratory disorders are lower than the same parameters of their peers without health problems. Conclusion. Educational research aimed at investigating the functional state of cardiorespiratory system and physical fitness of schoolchildren with chronic respiratory disorders and their healthy peers revealed that the indicators of cardiorespiratory activity of schoolchildren with chronic respiratory disorders are significantly lower than the same parameters of their healthy peers.
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Polivyanchuk, A., M. Smirny, S. Romanenko, et al. "RESEARCH OF EFFICIENCY ECOLOGICAL DIAGNOSTICS SYSTEM OF HEAT ENGINES AND BOILER PLANTS." Municipal economy of cities 6, no. 152 (2019): 73–78. http://dx.doi.org/10.33042/2522-1809-2019-6-152-73-78.
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A universal, multifunctional system of environmental diagnostics of heat engines and boiler plants has been created, which allows one to determine indicators characterizing the chemical and physical effect of these objects on the environment: concentrations, mass, specific and average operational emissions of pollutants, noise, thermal pollution, vibration. This measuring system consists of instrumental, testing, demonstration and laboratory modules, which allows you to use it as a diagnostic tool, training and test bench and laboratory; as well as apply it in various fields: transport, energy, environmental and educational fields. The diagnostic system implements methods for monitoring and improving the accuracy of measurements of average operating emissions of pollutants: method for determining the resulting measurement errors of the average operational emissions of gaseous pollutants and particulate matter – GAS and РT indicators, which allows you to evaluate the impact on the data of the value of the errors of the measuring equipment of the diagnostic system; a method for increasing the accuracy of measurements of the normalized РT index by taking into account the methodological error of measurements of a given value due to the influence of the temperature of the sample in the tunnel on the measured emission of particulate matter - δРТt. Experimental studies of the diagnostic system and methods for increasing its accuracyon full-scale objects were carried out: diesel engines: tractor 4CHN12/14 tractor D65M, diesel locomotive diesel engine DEL-01 and boiler units: gas - DKVR-20/13 and AOGV-100E, solid fuel - KCHM-2M-4. Transport diesels were tested according to the cycles established by the UNECE Regulations R-49, R-96 and the international standard ISO-8178. As a result of tests of these engines, the coefficients KРi, KMgasi and KMрmi were determined, which are used to assess the accuracy of measurements of GAS and РT indicators, the resulting measurement errors of these values were investigated and the range of variation of the methodical error δРТt was determined.
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Chatzimichail, Theodora, and Aristides T. Hatjimihail. "A Software Tool for Exploring the Relation between Diagnostic Accuracy and Measurement Uncertainty." Diagnostics 10, no. 9 (2020): 610. http://dx.doi.org/10.3390/diagnostics10090610.
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Screening and diagnostic tests are used to classify people with and without a disease. Diagnostic accuracy measures are used to evaluate the correctness of a classification in clinical research and practice. Although this depends on the uncertainty of measurement, there has been limited research on their relation. The objective of this work was to develop an exploratory tool for the relation between diagnostic accuracy measures and measurement uncertainty, as diagnostic accuracy is fundamental to clinical decision-making, while measurement uncertainty is critical to quality and risk management in laboratory medicine. For this reason, a freely available interactive program was developed for calculating, optimizing, plotting and comparing various diagnostic accuracy measures and the corresponding risk of diagnostic or screening tests measuring a normally distributed measurand, applied at a single point in time in non-diseased and diseased populations. This is done for differing prevalence of the disease, mean and standard deviation of the measurand, diagnostic threshold, standard measurement uncertainty of the tests and expected loss. The application of the program is illustrated with a case study of glucose measurements in diabetic and non-diabetic populations. The program is user-friendly and can be used as an educational and research tool in medical decision-making.