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All Journal Indonesian Journal of Social and Environmental Issues (IJSEI) Integrated Science Education Journal
Tenzin, Sangay
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Agriculture, Biological Sciences & Forestry Humanities Education Environmental Science Law, Crime, Criminology & Criminal Justice Social Sciences

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Effectiveness of E-Assessment in Science Learning: Improving the Quality and Efficiency of Assessment in the Digital Era Baah, Rexford; Konovalov, Oleksandr; Tenzin, Sangay
Integrated Science Education Journal Vol 5 No 2 (2024): May
Publisher : Cahaya Ilmu Cendekia Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37251/isej.v5i2.960

Abstract

Purpose of the study: The aim of this research is to provide an overview of how effective the use of e-assessment is in science learning. Methodology: This research is qualitative research with a literature review research method. The data in this research is secondary data where data is obtained from search results for documents related to the research topic. The sample from this research in the form of articles was selected based on several criteria, including publications in journals ranging from 2017-2022. After articles that match the topic and the basis of the data are collected, the researcher then carries out a review using several criteria explained in the descriptive statistics table. Main Findings: Based on the results of a review of several relevant articles, it was found that the use of e-assessment will greatly simplify the assessment process and is useful for quickly providing results for science assessment. So the application of e-assessment for assessing student science is very necessary to be implemented in schools. Novelty/Originality of this study: The novelty lies in its focus on the comprehensive application of e-assessment in evaluating cognitive, affective, and psychomotor aspects of science learning. The results of this research can be a basis for policy makers in developing and implementing e-assessment systems in schools. With evidence that e-assessment can speed up the assessment process and improve learning outcomes, policies that support the digitalization of assessments will be more easily accepted.
Investigating Sediment Grain Size Distribution and Transport Patterns in Punatsangchhu River, Punakha, Bhutan Tenzin, Sangay; Dorji, Ugyen
Indonesian Journal of Social and Environmental Issues (IJSEI) Vol. 6 No. 1 (2025): April
Publisher : CV. Literasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47540/ijsei.v6i1.1615

Abstract

This study investigates bed load sediment transport dynamics in selected areas of Punatsangchhu River, focusing on rock type identification, their association with topography, grain size distribution, and factors influencing bed load transport rates. 1D numerical sediment transport modeling was also done in HEC-RAS 6.3.1 using the discharge data of four years from 2020 to 2023. Bed load sediment samples were collected from 55 plots laid systematically 500 meters apart along the river. Results reveal Granite as the predominant rock type, reflecting the region's geological complexity shaped by Himalayan tectonics. Significant associations between rock types and topography, particularly for Granite Boulder, highlight the complex interplay of topographic factors shaping sediment distribution. Bed load transport rates vary across sediment roundness and river reach types, with round particles exhibiting higher rates and riffles displaying greater transport than pools. Regression analysis confirms the significant influence of river velocity and bed slope on transport rates, emphasizing the importance of hydraulic factors in sediment transport processes. The output from HEC-RAS revealed the highest sediment concentration in this valley during the late summer months directly aligning with the higher flow in these seasons. During these years, critical bed changes in some of the cross-sections were also observed. RS 12521 has witnessed the highest deposition rate of about 2.5 meters and similarly, RS 7006 has witnessed the highest erosion rate of about 2.3 meters. Likewise, the profile plot of the river reveals a series of erosion and deposition processes during this time window, affecting the riverbed and consequently channel morphology.
Co-Authors Baah, Rexford Dorji, Ugyen Konovalov, Oleksandr