349 research outputs found
Implementing Assessment literacy in ESL/EFL at Undergraduate Level in Bangladeshi Universities: Imperativeness and Challenges
The paper concentrates on investigating the implementation of assessment literacy at the tertiary level of Bangladesh. It also tries to explore the existing challenges which the teachers face in ELT classroom while implementing effective assessment techniques in evaluating academic examination scripts. In this regard, a survey method involving a questionnaire survey was used to obtain a quantitative insight of the study. After studying the responses from 10 respondents of two public universities of Bangladesh, the researcher attained the findings that demonstrated respondents’ experience and suggestions regarding assessment literacy in English language teaching at undergraduate level in the respective university, which include a number of barriers, like lack of training in achieving assessment literacy, insufficient support from the university, and disparity between learning objectives and assessment techniques. To ensure bonafide assessment literacy, the findings also provided some feasible suggestions, like offering students an opportunity to convert test into learning experiences, ensuring appropriate math between assessment and learner ability and regulating self-assessment on regular basis
Exploring General Science Questions of Secondary School Certificate (SSC) Examination: Assessment Effects on Students Learning
Creative question is generally considered as a tool to measure students’ various levels of learning. The study focused on exploring the present situation of General Science test items/creative questions in Bangladesh. This descriptive study was conducted using a concurrent triangulation research design. To conduct this study both quantitative and qualitative data were collected. 16 test of General Science test items/creative question papers of 2015 or 2016 were selected purposively as sample from all educational boards. 48 students were selected conveniently for interview from those who had been passed the SSC examination of 2015 or 2016. For collecting data from these sources test analysis protocol and interview protocol were used as research tools. Test analysis protocol was consisted of two criteria; wording criteria and practicing criteria. Selected test items were analysed based on these two criteria and Bloom’s cognitive domain. The study revealed that major test items were developed in a way which direct students towards lower level learning. Few test items were focused to students understanding, application and higher order learning. In practice, students were engaged to only memorization and understanding through SSC examination assessment. Few test items were devoted to application level learning of students. Higher order learning was totally ignored in SSC examination questions. Keywords: General Science, Examination, Assessment, SSC, Students Learning, Secondary Education
Universal Generator of Ultra-Wideband Pulses
An Ultra-Wideband (UWB) subnanosecond pulse generator is described in this paper. High amplitude Gaussian pulses are generated by a Step Recovery Diode (SRD) included in a novel pulse forming circuit. The pro-posed circuit solution utilizes the performance of the SRD effectively, without excessive requirements regarding the driver section of the generator. Monocycle pulses are then generated by an additional pulse forming network. A sim-ple transistor driver is also described, which transforms a TTL trigger signal to a driving pulse with the timing and amplitude parameters required by the SRD. Measurement results are presented, which show the proposed generator operating with stable output pulse parameters at arbitrary pulse repetition frequency up to 20 MHz. The generated monocycle pulses are 25 V in amplitude and approximately 500 ps in width
Isotropic Epsilon-Negative Particles
This paper presents two particles with negative permittivity in some frequency band. The response of a single dipole loaded by an inductance is strongly anisotropic. The response of a spider dipole does not depend on the orientation of the electric field of a wave being incident perpendicular to the particle substrate. These two particles are used in designing an isotropic epsilon-negative metamaterial. A unit cell of the metamaterial consists of a cube bearing the proposed particles on its faces, located with specific orientations. The experiments showed that only the single inductively loaded dipole is suitable for manufacturing of an isotropic epsilon-negative metamaterial. The isotropy of the new particles was checked by measurements
Influence of Media on People (Society), Free Will of People
katedra: KFL; rozsah: 48 s. (82 623 znaků)This work gives a brief summary of the Media effect on people. How important they are in the life of the people and how they influence the reception of them. At first we define, what the media are, how was the influence of them in the past and how it is nowadays. The present position showed us their current problems. That problem that we focus on is the violence produced by the media and this effect on teenagers. We tried to describe this burning problem to present symptoms together with a regulation possibility. We based on ten prime sources. These sources were added by a series of elaborative literature.Práce podává přehled o tom, jak média dokáží působit na člověka. Jak jsou podstatné v životě člověka a jak dokáží změnit vnímání jedince. Nejprve jsme vymezili, co média jsou, jaký měla vliv v minulosti a jaký v současnosti. Současné postavení médií nám poodhalilo jejich nové problémy. Tím, na který jsme se zaměřili, je násilí produkované médii a jeho vliv na mládež. Tento palčivý problém jsme se pokusili popsat, uvést jeho projevy a zároveň i ukázat možnosti jeho regulace. Vycházelo se z deseti primárních pramenů. Ty byly ještě doplněny o řadu další rozvíjející literatury
Vladimir Prelog\u27s Prague Years and My Later Contacts with Him
The circumstances in which V. Prelog studied and worked in Prague, some stories in which he was involved, and the author\u27s reminiscences to his numerous contacts with Prelog are described
Enhancing the Performance of Surface-based Biosensors by AC Electrokinetic Effects - a Review
Miniaturized surface based biosensors are a cost effective and portable means for the sensing of biologically active compounds. With advents in micro- and nanotechnology, the design of surface based biosensors can be adapted for various detection goals and for integration with multiple detection techniques. In particular, the issue of pathogen detectio
Isotropic Single Negative Metamaterials
This paper presents the application of simple, and therefore cheap, planar resonators for building 3D isotropic metamaterials. These resonators are: a broadside-coupled split ring resonator with a magnetic response providing negative permeability; an electric dipole terminated by a loop inductor together with a double H-shaped resonator with an electric response providing negative permittivity. Two kinds of 3D isotropic single negative metamaterials are reported. The first material consists of unit cells in the form of a cube bearing on its faces six equal planar resonators with tetrahedral symmetry. In the second material, the planar resonators boxed into spherical plastic shells and randomly distributed in a hosting material compose a real 3D volumetric metamaterial with an isotropic response. In both cases the metamaterial shows negative permittivity or permeability, according to the type of resonators that are used. The experiments prove the isotropic behavior of the cells and of the metamaterial specimens
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Weighted vest exercise improves functional ability in women over 75 years of age
The purpose of this study was to determine the effects of long-term weighted vest
exercise on hip bone mass, functional ability and static balance in elderly women. This was
a within subject exercise intervention study and included a 6-month control period.
Twenty-three subjects (age 85 ± 6) were recruited and observed for 6-months, then debar a
9-month exercise program. Due to attrition during the control period, five subjects were
recruited to add to the exercise group. Training entailed three supervised exercise sessions
per week for nine-months designed to overload the lower extremity neuromuscular system.
Training stimulus was one of two sets of six to twelve repetitions using weighted vests for
progressive resistance. Measurements for bone mineral density (BMD) were assessed
using dual energy x-ray absorptiometry (Hologic QDR-1000/W). Static balance
measurements were made using the Biodex Stability System. Functional ability tests
consisted of: leg strength and power (chair raises and sit to stand) and gait speed (tandem,
wide and narrow gait and circular path) and was assessed monthly for six months.
Comparisons were conducted using repeated measures analysis of variance. Significant
improvements were observed for chair raises 13%, sit to stand 13%, tandem gait 30%,
wide gait 22%, narrow gait 20% and circular path 20% following the exercise period. No
significant changes were detected (p>0.05) for BMD at the femoral neck and trochanter,
but BMD was maintained during the exercise period. Further, there was a trend for
improved body composition in the exercise versus the control period. Static balance did not
change following the observational or exercise period. In conclusion, a practical exercise
program of lower extremity training using weighted vests for resistance improves
functional ability in women over 75 years of age. Since improved may function transfer to
improved postural stability, these results have important implications for design of exercise
programs to reduce fall risk in the elderly
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