bluuebunny/crossref_metadata_2025 huggingface dataset:
Back to School: Upskilling Teachers’ Competence through Online Scholarship Workshop
Authors: Mahmud Yogi Saputra , Kuhon Richard , Slamet Santosa Donald Samuel , Pujiastuti Ani
Published: April 2021

As one of the strategic means of enhancing future competence and career, every individual, including teachers, is strongly encouraged to pursue a higher degree. Nevertheless, lack of financial ability may become one of the debilitating hindrances for the teachers to pursue a higher degree, mainly overseas. Currently, however, the Indonesian Government strives to support Indonesians to pursue a higher degree through a scholarship mechanism called the Indonesia Endowment Fund for Education, or popularly called as LPDP. Simultaneously, various scholarship mechanisms are also offered by several governing bodies in national or international contexts, such as Australia Awards, Chevening, Fulbright, DAAD, and many others. Therefore, this community empowerment project aims to enhance the understanding of schoolteachers, student-teachers, and other education communities regarding the administrative and technical preparation to register for a scholarship and prepare for overseas study. Moreover, the participants were also expected to comprehend the academic and social conditions while studying abroad, as well as the impact of pursuing a higher degree in their future competence and career. 535 participants were attending this community empowerment program in total.
Pengembangan Media Pembelajaran E-Learning Berbasis Edmodo Dengan Discovery Learning Pada Mata Pelajaran PPKN Kelas VIII Di SMP Lab Undiksha Singaraja
Authors: Sudewa Komang Ary , Sugihartini Nyoman , Divayana Dewa Gede Hendra
Published: April 2021

This study aims to produce designs and implement the development of discovery learning media based on Edmodo in the second semester of PPKn subjects at the SMP Lab Undiksha. This research is included in the type of research and development (R&D) with the ADDIE development model. This research involved VIII grade students and PPKn subject teachers at Undiksha Lab Middle School. Data were collected using a questionnaire / questionnaire. The analysis technique used is the expert validity test and the results for content experts are 1.00, design experts are 1.00, and media experts are 1.00. The results showed the results of the design and implementation of Edmodo-based discovery learning media in PPKn subjects were successfully applied based on the results of the validation test from content experts, design experts, and learning media experts with an average value of 1.00 with very valid criteria.
Pengembangan Media Pembelajaran E-Learning Dengan Model Pembelajaran Flipped Classroom Berbasis Edmodo Pada Mata Pelajaran Informatika
Authors: Rahman Dedi , Suyasa P Wayan Arta , Wahyuni Dessy Seri
Published: April 2021

The purpose of this study were (1) Produced a design and implemented the development of e-learning learning media with Edmodo-based Flipped Classroom model in Informatics subject of class VII in SMP Negeri 2 Mengwi, (2) Determined the subject teacher and students’ responses towards the development of e-learning learning media with Edmodo-based Flipped Classroom model in Informatics subject of class VII in SMP Negeri 2 Mengwi. The study was a Research and Development (R&D) research with ADDIE development model. This study involved students from VII A class and teacher of Informatics subject in SMP Negeri 2 Mengwi. The method of data collection was questionnaire. The result of the study showed that (1) The design and the implemented e-learning media were success implemented based on validity test from content experts, design experts, and learning media experts with Aiken's V coefficient average score  0,89 and very valid, (2) The teacher and students’ responses showed the average score were 40 for the teacher and 61,8 for the students, meaning that it was included in very positive category with very practical criteria.
Evaluasi Sistem Informasi Skripsi dan Tugas Akhir STMIK Primakara (PRISKA) Menggunakan Metode Usability Testing
Authors: Gitajayanti Ni Luh Dithiana , Satwika I Putu , Paramitha A.A. Istri Ita
Published: April 2021

Sistem Informasi Primakara Skripsi dan Tugas Akhir (PRISKA) is an information system that created to manage the final project of students in STMIK Primakara. Within the information system, students can manage the process of final project from the beginning until the end. This research is conduct to evaluate PRISKA as information system from the user experience perspectives. To evaluate the information system, researcher will use Retrospective Think Aloud (RTA) and User Experience Questionnaire (UEQ) as the usability testing methods.This research respondent are consist of third year students in STMIK Primakara. The results of this research shows PRISKA that used by students need to be upgraded and develop because student doesn’t give good impressions regarding to the user interface and the user experience
GuideAR: Aplikasi Berbasis Augmented Reality dan Global Positioning System untuk Pengenalan Daya Tarik Wisata
Authors: Kusuma I Wayan Wegha Nanda , Putra I Gede Juliana Eka , Nirmala Bagus Putu Wahyu
Published: April 2021

Abstrak—GuideAR adalah sebuah aplikasi pengenalan tempat wisata dengan menggunakan teknologi augmented reality, aplikasi ini dikembangkan dengan menggunakan metode Agile, yaitu sebuah metode pengembangan software yang memerlukan adaptasi cepat dan dapat mengalami perubahan secara berkala sehingga bisa dibilang metode ini berfokus terhadap kualitas produk yang dihasilkan daripada dokumentasi, negosiasi kontrak, dsb. Oleh karena itu, peneliti menggunakan metode ini agar aplikasi yang dibuat dapat disesuaikan dengan keinginan calon pengguna aplikasi.          Dari hasil pengembangan aplikasi GuideAR menggunakan metode Agile ini didapatkan bahwa aplikasi yang dibuat perlu dilakukan beberapa iterasi agar hasil yang didapat lebih maksimal. Hasil pengujian aplikasi memberikan saran agar menambahkan lokasi-lokasi wisata yang lebih banyak ke depannya agar lebih banyak tempat wisata di daerah Tegallalang yang terekspos dan lebih dikenal.Kata Kunci­­—Aplikasi GuideAR; Realita Tambahan; Metode Agile; Kecamatan Tegallalang.
Evaluasi Tata Kelola TI Menggunakan Framework COBIT 5 Studi Kasus STMIK Primakara
Authors: Fradinata Marciano Risky , Putra I Gede Juliana Eka , Wijaya I Nyoman Yudi Anggara
Published: April 2021

STMIK Primakara is a Technopreneurship campus who have a vision to produce IT Scholar with entrepreneurial mentality. However, to achieve that, STMIK Primakara need to manage the IT Government to support the academics and non-academics environment around the students until graduates are controlled by department of IT Development and Implementation (PPTI). The researcher will evaluates the capability level of IT Governance in STMIK Primakara and provide recommendations for the gap between the performance in domain process APO03, APO04, and BAI01 using quantitative and qualitative methods. Moreover, the researcher will use survey, interview, and document studies for the data required.  The results of this research shows the average of capability level in domain process APO03, APO04, and BAI01 are partially achieved. Therefore, to fill the gap between STMIK Primakara current capability level and expected capability level, recommendation have been given by the researcher to create an improvement regarding to STMIK Primakara IT Governance.
O grafismo Kadiwéu no ensino de arte na perspectiva antropológica
Authors: Lindquist Verônica , Lacerda Léia Teixeira
Published: April 2021

O presente artigo apresenta os resultados preliminares de uma investigação desenvolvida no Programa de Mestrado Profissional em Educação, na linha de pesquisa: Formação de professores e diversidade, da Unidade Universitária de Campo Grande da Universidade Estadual de Mato Grosso do Sul. Visa apresentar compreensões sobre o processo de ensino de Arte quando oportuniza uma discussão sobre cultura, perspectiva e estética não ocidental com fotografias da etnia Kadiwéu. As fotografias de Boggiani pertence ao acervo particular da família Fric e foram recuperadas pelos netos, Pavel Fric e Yvonna Fricova e publicadas em 1997 em um livro. Nesse contexto, a abordagem com as imagens busca promover uma reflexão relacional entre arte e Antropologia da arte, por meio da leitura de imagem no ensino de Arte na Educação Básica. Dessa maneira, interpõe-se a problemática quanto ao diálogo entre culturas, bem como as percepções e imagens entre o “eu” e o “outro” que descortinam na maneira de ver novas possibilidades de ser, de viver e de conceber o mundo circundante. Os resultados indicam que a abordagem e as possibilidades da imagem como agência e cognição de processos são inferidas na relação entre a percepção das diferenças e das estéticas culturais mediadas pela alteridade.
PRODUCTION OF Candida BIOMASSES FOR HEAVY METAL REMOVAL FROM WASTEWATERS
Authors: MERSİN Gülşah , AÇIKEL Ünsal
Published: April 2021

Yeasts can accumulate heavy metals and grow in acidic media. In the present study, it was shown that Candida yeasts in an aqueous solution accumulate single Cu(II) and Ni(II) cations. The effect of heavy metal ions on the specific growth rate of biomasses and the uptake of metal ions during the growth phase was investigated in a batch system. Bioaccumulation efficiency decreased with increasing metal ion concentrations at constant sucrose concentrations. Both the specific growth rate and the biomass concentration were more inhibited in the bioaccumulation media containing Ni(II) ions singly as compared with the bioaccumulation media containing Cu(II) ions singly. The maximum specific growth rate and the saturation constant of yeasts were examined with a double-reciprocal form of Monod equation. Metal uptake performance decreased from 81.68% to 46.28% with increasing Ni(II) concentration from 25 mg/L to 250 mg/L for Candida lipolytica. Candida biomasses may be an alternative way of removal of heavy metals from wastewaters and may constitute a sample to produce new biomass. The study showed that Candida yeasts can be used as economical biomass due to their metal resistance and efficient production.
Carbapenem Resistance Profiles of Pathogenic Escherichia coli in Uganda
Authors: Ssekatawa Kenneth , Byarugaba Denis K. , Nakavuma Jesca L. , Kato Charles D. , Ejobi Francis , Tweyongyere Robert , Wampande Eddie M.
Published: April 2021

Escherichia coli has been implicated as one of the main etiological agents of diarrhea, urinary tract infections, meningitis and septicemia worldwide. The ability to cause diseases is potentiated by presence of virulence factors. The virulence factors influence the capacity of E. coli to infect and colonize different body systems. Thus, pathogenic E. coli are grouped into DEC strains that are mainly clustered in phylogenetic group B1 and A; ExPEC belonging to A, B2 and D. Coexistence of virulence and beta-lactamase encoding genes complicates treatment outcomes. Therefore, this study aimed at presenting the carbapenem resistance (CR) profiles among pathogenic E. coli. This was a retrospective cross-sectional study involving use of 421 archived E. coli clinical isolates collected in 2019 from four Uganda tertiary hospitals. The isolates were subjected to antibiotics sensitivity assays to determine phenotypic resistance. Four sets of multiplex PCR were performed to detect CR genes, DEC pathotypes virulence genes, ExPEC PAI and the E. coli phylogenetic groups. Antibiotic susceptibility revealed that all the 421 E. coli isolates used were MDR as they exhibited 100% resistance to more than one of the first-line antibiotics. The study registered phenotypic and genotypic CR prevalence of 22.8% and 33.0% respectively. The most predominant gene was blaOXA-48 with genotypic frequency of 33.0%, then blaVIM (21.0%), blaIMP (16.5%), blaKPC (14.8%) and blaNDM (14.8%). Spearman’s correlation revealed that presence of CR genes was highly associated with phenotypic resistance. Furthermore, of 421 MDR E. coli isolates, 19.7% harboured DEC virulence genes, where EPEC recorded significantly higher prevalence (10.8%) followed by S-ETEC (3.1%), STEC (2.9%), EIEC (2.0%) and L-ETEC (2.0%). Genetic analysis characterized 46.1% of the isolates as ExPEC and only PAI IV536 (33.0%) and PAI IICFT073 (13.1%) were detected. Phylogenetic group B2 was predominantly detected (41.1%), followed by A (30.2%), B1(21.6%), and D (7.1%). Furthermore, 38.6% and 23.1% of the DEC and ExPEC respectively expressed phenotypic resistance. Our results exhibited significant level of CR carriage among the MDR DEC and ExPEC clinical isolates belonging to phylogenetic groups B1 and B2 respectively. Virulence and CR genetic factors are mainly located on mobile elements. Thus, constitutes a great threat to the healthcare system as this promotes horizontal gene transfer.
Situational Leadership Style Supports the Performance of Doctors in the Military Based Hospital
Authors: Harsono Anastasia Dessy , Indrawati Ratna , Jus'at Idrus
Published: April 2021

The doctor's performance played an important role in achieving the vision and mission of a hospital. Many factors affected performance, including leadership style, work environment, organizational learning, work motivation, work discipline and so on. This study aimed to analyze the influence of situational leadership style, work environment, organizational learning, and work motivation on performance. The research design used was quantitative analytic research with a causality approach. The data source was obtained in the form of primary data. Samples were a total sampling. Data analysis using Structural Equation Modeling (SEM) - AMOS. The results of the research were situational leadership style, work environment, organizational culture and work motivation partially or simultaneously had a positive and significant effect on the performance of general practitioners. The findings of the study were that the situational leadership style and work environment had a positive and significant effect on organizational culture, work motivation and performance of general practitioners. The direct influence of the situational leadership style on the performance of general practitioners was greater than the work environment, organizational culture, and work motivation.
The Economic Impact of COVID-19 on Construction Industry: Oman’s Case
Authors: Al Amri Tariq
Published: April 2021

With the sudden onset of the COVID-19 pandemic in 2020, global economies have been severely disrupted. The decline of the aviation industry and the fall in global demand for goods and services have proved to be fatal for many countries already struggling with economic issues before the pandemic. In particular, for the Omani economy, falling oil prices and supply chain disruptions have dealt a severe blow to the construction industry. Not only the construction industry has seen a fall in financial support and funding, many players in the industry have also sustained the hit that further increases the financial burden of Oman's construction industry. In this article, the economic impacts of the COVID-19 pandemic on Oman's construction industry are analyzed using an inductive reasoning approach.  Data are gathered from primary and secondary sources. Although the pandemic consequences are cruel, it is an opportunity to improve paradigms to absorb such events in the future.
Previous Years Audit Opinions, Profitability, Audit Tenure and Quality Control System on Going Concern Audit Opinion
Authors: Ramadhan Aji Purnama , Sumardjo Mahendro
Published: April 2021

This study was conducted to examine the effect of the previous year's audit opinion, profitability, audit tenure, and quality control systems on going concern audit opinion. This study uses mining sector companies and public accounting firms (PAF) that audited as samples in the study. The data analysis technique used is Path Analysis with Smart PLS 3 with a significance level of 5%. The result indicates that previous year's audit opinion, profitability has a significant impact on going concern audit opinion, meanwhile, audit tenure and quality control system have not significant. Furthermore, other results from this study indicate that the audit tenure, quality control system, and previous year's audit opinion through the quality control system has no effect on going concern audit opinion. The implication of this study to the company is expected to pay attention to various factors, especially financial conditions that can have an influence on going concern audit opinion because this opinion gives a warning to the company.
Investigation Break Down Voltages for High Density Polyethylene Cables Using Multiple Regression
Authors: Nabil Hussein M. , Nasrat Loai S. , Kamel Salah M.
Published: April 2021

This paper illustrated the electrical characteristic of High Density Polyethylene (HDPE) by adding an alumina trihydrate (ATH)filler At concentrations vary from 0% to 40%.

Multiple Regression Analysis (MRA) was used to find the best suitable curve between the percentages of ATH filler and the Break down Voltages (kV/mm).
Some Engineering Properties of Foamed Concrete for Sustainable Technological Development
Authors: Oginni Felix A. , John Samuel N.
Published: April 2021

A study of the technology of foamed concrete production is carried out. The engineering properties and applications of this type of concrete are presented for varying densities so as to effectively tap the advantages of its use for specific purposes. The properties considered are the 7-day compressive strength, thermal conductivity, modulus of elasticity and drying shrinkage. A study of the behaviours of foamed concrete at varying dry densities for the different characteristics was undertaken. Results indicate that as the dry density increases, the engineering properties increase though at different rates for the 7-day Compressive strength, Thermal conductivity, and Modulus of elasticity. The drying shrinkage decreases as the dry density increases. A comparative study of the 7-day Compressive strength and Modulus of elasticity show that they both follow the same trend over the varying dry density except at a dry density of 1200 kg/m3. A comparative study of the thermal conductivity and the percent drying shrinkage indicate that the thermal conductivity is inversely proportional to the percent drying shrinkage. Economics and other considerations together with its multipurpose applications of foamed concrete can open up business opportunities in Africa and sustainability. This can also help in providing needed funds for infrastructural development.
Hazards Analysis in the Canton La Unión, Cartago, Costa Rica
Authors: Campos Jorge Rodríguez , Arce Mario Fernandez
Published: April 2021

The hazards from the canton La Unión were identified, analyzed, and described. A value ranging from 0 to 1 was assigned to each threat in the Minimum Geostatistical Units (MGU), to estimate the dangers density in the study area. This article shows the spatial distribution of such index. The manifestation of several natural and anthropic events forces to investigate and understand such processes, in order to improve Disaster Risk Management (DRM) in the Canton and provide inputs to the Local Government to carry out such work. The investigation required a bibliographic review to know the impact of past incidents, field surveys to determine the spatial extent of the threats, and the calculation of a hazard’s density index. According to the results, earthquakes are the main danger in La Union and the Center, South and West of the canton are the areas with the highest hazards density.
Quench Process and Steel Chemistry Optimization to Prevent Quench Cracking during Hardening of Splined Semi – Axles
Authors: Kobasko Nikolai I.
Published: April 2021

In the paper the hardening process of splined semi-axles is discussed and physics of preventing the quench crack formation during intensive quenching (IQ) is explained. It is shown that during IQ process at the splined cylindrical surface very high compressive current band residual stresses are formed which prevent the possibility of quench crack formation on splines. It is enough to optimize the stress distribution through the section of semi-axle and perform IQ process in order to prevent quench cracks formation in splines. It is achieved via optimizing depth of surface hardened layer. In this case the depth of surface hardened layer for cylinders and for cylinders with splines are the same. There is no need to create a special thin shell on splines or perform carburization to create such shell. Due to larger martensite specific volume, it results in surface compressive residual stress formation. Absence of martensite phase at the core eliminates core swelling that could be a reason in tensile surface stresses. The idea is supported by FEM calculations and testing of real semi-axles in industrial condition. The new idea simplifies cardinally technological process and makes it less costly.
Banner waste mixture: The impact on quality of traditional brick’s compressive strength
Authors: Maryana Okky Fajar Tri , Ikhwanuddin Rifqi , Anggini Safitri , Barna Ridho
Published: April 2021

The regional election in Lampung province has finished. The events left the amount of ex-campaign props such as banner to become waste. The final landfills and the waste reuse system are still an unsolved issue in Lampung province. A study of materials composition is required to find potential reuse of the waste. One of the traditional products in Lampung province is conventional bricks. Previous studies show that mixing local clay with additional materials such as Rice Husk Ash (RHA) could improve its characteristics, especially water absorption potentiality. This study reported the prototype of bricks with banners waste mix produced employing a conventional method. The method obtains the best admixture composition is 0.002 kilograms banner waste/volume 0.125 liters or 0.02% total weight of clay-dough. The morphology of the prototype shows a similar texture with a non-waste mixture of traditional brick. It is burnt-clay red-bricks, which is used as a control in this study. The prototype bricks show smooth texture and nearly flat on all sides. The addition waste composition ratio of more than 0.002 kilograms indicated cracking texture that affects the market tend to buy bricks, which has good appearance and texture. This study also reported that the mixture's effect is decreasing compressive strength, almost 20% from the control sample.
Developing heat rate and heat capacity measurement instruments of textile waste solution in the textile dyeing process
Authors: Putra Valentinus Galih Vidia , Purnomosari Endah , Mohamad Juliany Ningsih
Published: April 2021

Heat rate and heat capacity are widely used to determine the thermal characteristics, especially for wastewater treatment using electro coagulant. This study aimed to determine the value of heat rate and heat capacity of the waste solution in the textile industry, especially in the dyeing waste, by using a microcontroller device. The method for measuring the specific heat capacity and the textile waste solution's heat rate is based on the principle of the first law of Thermodynamics. Temperature measurements were carried out using a digital temperature sensor type DS18B20. In this research, the heat rate and specific heat of the dyeing solution and mineral water used in the textile industry have been studied. This study uses five types of dyeing waste solution as test solutions, namely green waste solution, orange waste solution, blue waste solution, brown waste solution, and mineral water. This experiment's principle is applying Joule's law by using electrical properties with a microcontroller device used to obtain the rise of temperature data each time in real-time every 2 seconds. Based on this research, it can be concluded that the instrument can be used to measure the heat rate and heat capacity of a textile waste solution. Based on this research, we also found that the specific heat of hard water (Hard water is a kind of water with high mineral content, while soft water is water with low mineral content. Apart from calcium and magnesium ions, the cause of hardness can also be other metal ions as well as bicarbonate and sulfate salts) (4.19 ± 0.77) J/ gram ℃ and the specific heat of the four types of waste solution ranged from (3.20 ± 0.72) J/gram ℃ to (6.83 ± 1.71) J/gram ℃ and also it was found that the heat rate of hard water is 0,0471 ℃/s and the heat rate of the four types of waste solution is range from 0,0289 ℃/s to 0,0617 ℃/s.
Diagnosis and remediation of physics students’ difficulty through the outdoor student remediation teaching (OSRT)
Authors: Muslimin Muslimin , Makitulung Janli Novrenli , Werdhiana I Komang , Nurlaila Nurlaila , Agustina Agustina
Published: April 2021

The study's purpose was to describe students' learning difficulties in physics, the causes of students' learning difficulties in physics, and the remediation to solve students' difficulties. This research was exploratory research with qualitative and quantitative approaches. The populations of this study were eleventh-grade students of SMAN 6 Palu. The respondents were chosen based on the lowest posttest results. The research instruments were OSRT treatment, pretest, posttest, and diagnostic test. The data were analyzed by comparing the pretest results, the posttest, and the gain score to determine the improvement after the remediation. Respondent A obtained 0.71 within the high category, respondent B obtained 0.69 within the high category, respondent C obtained 0.85 within the high category, respondent D obtained 0.84 within the high category, and respondent E obtained 0.46 within the moderate category. It can be concluded that internal and external factors caused difficulties. The internal factors were students' weak basic knowledge and weak material prerequisites, while the external factors were the teacher's learning methods that did not attract students' attention. The OSRT can overcome the difficulty in understanding Newton's law's concept to improve their ability to understand physics concepts.
Students' metacognitive awareness and physics problem solving ability and correlation between them
Authors: Rahayu Siti , Hertanti Erina
Published: April 2021

This study investigates the correlation between metacognitive awareness and students’ problem-solving ability level in direct current electricity concepts. This study is conducted in 2019 in one of the Senior High Schools in South Tangerang. There are 126 students of 12th grade majoring in Science (XII MIA) as the sample. A proportionate stratified random sampling technique chooses the sample. It is the choosing sample technique used randomly and proportionally that focused on the population's level. The method of the study is correlational. The study instruments are 45 Metacognitive Awareness Inventory (MAI) statements and seven essay questions of problem-solving ability test. The result of the Person Product Moment correlation and the significant test shows that metacognitive awareness has a positive and significant correlation with students’ problem-solving ability to direct current electricity concepts. Moreover, it is known that students’ metacognitive awareness and problem-solving ability are at a medium level.
The comparison of high school students’ understanding of kinematic materials: Case of question representations
Authors: Putri Hellmy Nur Pratama Annuari , Wulandari Ratih Niela , Fitriana Agnes , Kusairi Sentot
Published: April 2021

This present study aimed to compare the understanding on kinematic concepts between public and private high school students in terms of the type of questions representation. Therefore, this quantitative and descriptive study applied survey methods in conducting the research. 190 students of private high school and 199 students of public high school were involved as the research subjects. The main instrument in this study was an isomorphic multiple-choice test which was developed into verbal representations, pictures and graphics. Specifically, this research instrument was adapted from Force Motion Concept Evaluation (FMCE) and High School National Exam which had been validated with a reliability number of 0.74. Another key point, descriptive statistical and inferential independent t-test were used as the data analysis. Consequently, the results showed that there were significant differences in conceptual understanding between private and public high schools’ students. The concept understanding in private high school was lower than in public high school, which was evidenced with the average scores of public high school students by 42,68 and private high school students by 22,93. All in all, high school students are more capable in answering questions over verbal representation instead of understanding the concepts with graphical representations.
Internet of things based learning media with problem solving approach: Its effect on higher order thinking skills
Authors: Liana Yeni Rima , Linuwih Suharto , Sulhadi Sulhadi
Published: April 2021

This research analyzed media feasibility and effectiveness based on IoT with a problem-solving approach that provides real experience to improve students' HOTS on thermodynamics law material. The Borg & Gall method's research development simplification had three stages: preliminary study, development, and field testing. The research subjects consisted of four lecturers as expert validators, two physics teachers, and three groups consisting of 108 in science XI grade students of Senior High School in Batang Regency, Central Java. Data collecting techniques were using questionnaires, observation, interviews, and written tests. The results of the validation of media experts and material experts were 3.84 and 3.75, respectively. The results of teacher responses and students' responses were 3.92 and 3.50 in the excellent category. The product's effective contribution to improving HOTS from the Multivariate Test analysis on GLM based on the partial eta squared value was 85.9%. The mean difference (MD) test results were -30.600 for the experimental group, while the control groups were -5.879 and -16.125, respectively. The more negative the Mean Difference (MD) score, the higher the students' HOTS. This shows that there is an experimental group giving improved scores better than the control group. This shows that there is an experimental group giving improved scores better than the control group. IoT is an opportunity for teachers to see technology as part of education because technology is the current millennial generation's cultural artifact.
Subject specific pedagogy based on discovery learning and volcanic eruption disasters: Does it affect students’ concept mastery?
Authors: Tyas Rizki Arumning , Pujianto Pujianto , Suyanta Suyanta
Published: April 2021

This study aimed to determine the effect of science Subject Specific Pedagogy Based on Discovery Learning and Volcanic Eruption Disasters on students' concept mastery. This research was a quasi-experiment study with two sample groups, the experimental and the control classes of SMP N 2 Cangkringan. The instrument for collecting the concept mastery data were 35 items. The data were analyzed using descriptive and inferential analysis. The descriptive analysis employed the gain score's categorization, while the inferential analysis employed the independent sample t-test and effect size test using Partial Etta Square. The results showed an effect of the science subject-specific pedagogy based on discovery learning and volcanic eruption disaster on student’s concept mastery with a gain score of 0.79 (high) in the experimental class. In contrast, the control class obtained 0.07 (low). The independent sample t-test showed that the significance value obtained was 0,000. The effect size value seen from the Partial Etta Square statistics was 0.924, which showed that the science Subject Specific Pedagogy Based on Discovery Learning and Volcanic Eruption Disasters on the concept mastery is very strong. Thus, it can be concluded that the use of science Subject Specific Pedagogy Based on Discovery Learning and Volcanic Eruption Disasters can increase the student's science concept mastery. Further integration and development can be done for other types of disasters because it is one of the nature symptoms that also an object of natural science. Thus, natural science learning will be more meaningful because it is attached to the phenomena in the students' daily lives.
Estimation of crystallite size, density, and compositional of the Ti: Al2O3 single crystal
Authors: Kusuma Hamdan Hadi , Ibrahim Zuhairi , Othaman Zulkafli
Published: April 2021

The purposes of this research were to estimate the crystallite size, density, and chemical composition of the ingot Ti: Al2O3  crystal grown by the Czochralski method. The crystallite size and composition of Ti: Al2O3 crystals had been determined using x-ray diffraction (XRD) and energy-dispersive x-ray spectroscopy (EDXS). Based on the Archimedes principle, the density of the crystals had been determined. The XRD patterns showed a single central peak with high intensity for all samples. It indicated that all samples had a single crystal. The average value of the samples' crystallite size was in the range of 20.798 nm to 34.294 nm. The ingot crystal density and Ti composition increased from the top to the bottom part because the solid solution was distributed unevenly during the growth process.
PENGEMBANGAN APLIKASI MOBILE LEARNING FISIKA SEBAGAI MEDIA PEMBELAJARAN PENDUKUNG
Authors: Gunawan Indra
Published: April 2021

Abstract: The objective of this research is to create a supporting instructional media in the form of mobile learning of main material for Senior Secondary School students. The created mobile learning was played on mobile phone that supports flash player, mainly Symbian S60 3rd based mobile phone. The method applied in this research was research and development. The first step was limited to the material of heat transfer. The trial of an application was conducted to 2 specialized lecturers, 2 media experts, 2 Physics teachers of Senior Secondary School, and 44 students of Al- Azhar Senior Secondary School, Bandar Lampung. Indicators used to assess the created instructional media were the appropriateness of the content to the purpose, appropriateness of instruction to the technical quality. Marks of the three indicators were above 80% so that the created mobile learning was categorized as very good. Based on the findings, it may be concludedthat the instructional media in the form of mobile learning can be used as a supporting instructional media for Senior Secondary School students to learn Physics subject. Keywords: instructional media, mobile learning, heat transfer, physic subject, and Senior Secondary School.
Implementasi Pembelajaran Bervisi SETS di Sekolah
Authors: Latifah Sri
Published: April 2021

Pembelajaran tentang alam harus dapat disajikan sebagai suatu proses penemuan dan terkait dengan pengalaman peserta didik, sehingga pengetahuan yang diperoleh bersifat lama, dapat diingat, dan mampu meningkatkan penalaran siswa dan kemampuan untuk berfikir bebas. Peran pendidik sebagai narasumber yang bijak dan berpengetahuan serta berfungsi sebagai sutradara yang mengendalikan proses pembelajaran dan siap membantu siswa apabila ada kemacetan proses pembelajaran atau melantur tanpa arah. Wawasan SETS (Science, Environment, Technology, Society) yang diaplikasikan ke dalam proses pembelajaran Fisika diharapkan dapat membawa sistem pembelajaran untuk menghasilkan lulusan yang dapat menerapkan pengetahuan yang diperolehnya guna meningkatkan kualitas hidup manusia tanpa harus membahayakan lingkungannya.
MULTI REPRESENTASI SEBAGAI ALTERNATIF PEMBELAJARAN DALAM FISIKA
Authors: Irwandani Irwandani
Published: April 2021

Multi representasi adalah model yang mempresentasi ulang konsep yang sama dalam beberapa format yang berbeda-beda. Beberapa bentuk representasi dalam fisika bisa berupa kata, gambar, diagram, grafik, simulasi komputer, persamaan matematika dan sebagainya. Multi representasi dapat membantu pembelajar dalam mempelajari dan membangun suatu konsep dan mengatasi permasalahan, membantu dalam memecahkan masalah, serta membantu untuk menyikapi masalah. Berbagai studi mengenai multi representasi menunjukkan bahwa ternyata multi representasi sangat penting untuk diterapkan dalam pembelajaran. Bahkan, ada ada usulan agar multi representasi dimasukkan ke dalam kurikulum pembelajaran fisika lanjutan.
Tinjauan Struktur Penelitian, Penulisan Ilmiah dan Teknik Penulisan Ilmiah
Authors: Wati Widya
Published: April 2021

Banyak bentuk dan cara penulisan yang dapat ditemukan dalam berbagaipedoman penulisan. Bentuk luarnya bisa berbeda namun jiwa dan  enalarannya sama. Dengan demikian yang paling penting bukan saja mengetahui teknik-teknik pelaksanaannya melainkan memahami dasar pikiran yang melandasinya. Pemilihan bentuk dan cara penulisan dari khasanah yang tersedia merupakan masalah selera dan preferensi perorangan dengan memperhatikan berbagai factor lainnya seperti masalah apa yang sedang dikaji, siapa pembaca tulisan ini dan dalam rangka kegiatan keilmuan apa karya ilmiah ini disampaikan.Berdasarkn pemikiran tersebut maka akan coba dibahas alur-alur jalanpikiran yang terdapat dalam penelitian ilmiah yang dikaitkan dengan penulisan ilmiah. Dalam makalah ini juga akan coba dibahas mengenai tema pokok sebuah proses penelitian. Tema pokok ini akan dijabarkan secara logis dan kronologis dari metode keilmuan.
Brain Based Teaching Pada Mata Pelajaran IPA
Authors: Sesmiarni Zulfani
Published: April 2021

Proses pembelajaran melibatkan dan mengarahkan aktivitas peserta didik untuk mencapai berbagai tujuan yang telah direncanakan secara sistematik. Selain itu pembelajaran juga merupakan usaha untuk mengelola lingkungan dengan sengaja agar seseorang membentuk diri secara positif dalam kondisi tertentu. Pembelajaran tidak terlepas dari usaha pendidik untuk memfasilitasi peserta didik mencapai tujuan pembelajaran yang telah ditetapkan. Dalam proses pembelajaran, unsur yang perlu diperhatikan terutama pada aspek perbedaan karakteristik individu. Salah satu paradigma pembelajaran yang memfasilitasi keberagaman kemampuan siswa adalah dengan brain based teaching. Pembelajaran ini melibatkan seluruh aspek pembelajaran, yang dimulai dengan pembelajaran emosional, kognitif, fisik, social dan refleksi. Diharapkan dengan melibatkan semua potensi yang ada dalam otak siswa, maka pembelajaran akan dapat menjadi bermakna.
"Penelitian Dan Pengembangan" Yang Belum Diminati Dan Perspektifnya
Authors: Yuberti Yuberti
Published: April 2021

Ditengah keragaman persoalan dan perdebatan terhadap ragam metodologi penelitian yang ada, muncul apa yang disebut dengan "Penelitian dan Pengembangan" yang seakan-akan barang baru, tetapi sesungguhnya stok lama. Dikatakan stok lama, karena "Penelitian dan Pengembangan" sudah lama digunakan di sektor industri yang menghasilkan produk, baik itu produk manufaktur, maupun produk olahan atau makanan. Hanya saja untuk penelitian dibidang pembelajaran, baru mulai dilirik belakangan ini.
Pemodelan Gravity Kecamatan Dlingo Kabupaten Bantul Provinsi D.I. Yogyakarta
Authors: Sari Dian Novita
Published: April 2021

Telah dilakukan penelitian dengan menggunakan metode gravity di daerah Dlingo, Kabupaten Bantul, Provinsi D.I. Yogyakarta. Penelitian ini bertujuan untuk membuat model struktur bawah permukaan tanah daerah Dlingo Kabupaten Bantul dengan menggunakan metode gravity. Metode gravity adalah metoda penyelidikan geofisika yang didasarkan pada variasi percepatan gravitasi di permukaan bumi. Pengukuran gravitasi ini disebabkan oleh adanya perbedaan dari medan gravitasi yang diakibatkan variasi massa di kerak bumi. Hasil yang didapat antara lain Sekitar 75% daerah penelitian didominasi oleh daerah dengan variasi percepatan gravitasi tinggi dan selebihnya merupakan daerah dengan variasi percepatan gravitasi rendah, Pemodelan downward memperlihatkan bahwa dibawah permukaan tanah terdapat dua tubuh batuan yaitu batupasir dan batugamping dengan densitas 1,9g/cm3 dan 2,385 g/cm3. Di daerah tersebut terdapat patahan berupa sesar pada koordinat disekitar X= 530800 dan Y= 9104200.
Aplikasi Distribusi Maxwell-Boltzmann dalam Menentukan Kecepatan Molekular
Authors: Wati Widya
Published: April 2021

Distribusi Maxwell-Boltzmann adalah salah satu dari tiga distribusi partikel yang dikenal pada sistem partikel. Distribusi Maxwell-Boltzmann, masih dalam kategori pada sistem partikel klasik, dimana partikel-partikel didalamnya masih dapat terbedakan.Salah satu penerapan distribusi Maxwell-Boltzmann yang ada disekitar kita adalah distribusi partikel pada tabung gas rumahan baik yang 3 kg maupun 12 kg. Dengan  memahami distribusi Maxwell-Boltzmann, kita dapat mengetahui bagaimana kecepatan molekular yang terjadi pada tabung gas.Pada tulisan ini dipaparkan akan dipaparkan aplikasi distribusi Maxwell-Boltmann dalam menentukan kecepatan molekular, visualisasi ruang kecepatan, kecepatan gas dalam tabung gas, dan juga fenomena ledakan tabung gas.
Solution Of Schrödinger Equation For Poschl-Teller Plus Scarf Non-Central Potential Using Supersymmetry Quantum Mechanics Aproach
Authors: Saregar Antomi
Published: April 2021

In this paper, we show that the exact energy eigenvalues and eigenfunctions of the Schrödinger equation for charged particles moving in a certain class of noncentral potentials can be easily calculated analytically in a simple and elegant manner by using Supersymmetric method (SUSYQM). We discuss the Poschl-Teller plus Scarf non-central potential systems. Then, by operating the lowering operator we get the ground state wave function, and the excited state wave functions are obtained by operating raising operator repeatedly. The energy eigenvalue is expressed in the closed form obtained using the shape invariant properties. The results are in exact agreement with other methods.Keyword: supersymmetry, non-central potentials, poschl teller plus scarf.
Implementasi Pembelajaran Fisika SMA Berbasis Inkuiri Terbimbing Terintegrasi Pendidikan Karakter untuk Meningkatkan Hasil Belajar Siswa Pada Materi Cahaya Dan Optika
Authors: Asyhari Ardian
Published: April 2021

Penelitian ini bertujuan untuk mendeskripsikan hasil belajar siswa (hasil belajar kognitif, afektif, dan hasil belajar psikomotor) melalui penerapan pembelajaran berbasis inkuiri terbimbing terintegrasi pendidikan karakter. Pencapaian hasil belajar siswa yang diukur terdiri dari tiga aspek, yaitu aspek kognitif, psikomotorik, dan afektif. Instrumen penelitian yang digunakan pada penelitian ini terdiri dari soal pretest dan posttest (aspek kognitif), lembar penilaian psikomotorik (aspek psikomotorik), dan lembar penilaian afektif (karakter). Teknik analisis data dilakukan dengan menggunakan program IBM SPSS Statistics 22. Untuk analisis data kognitif dilakukan dengan menggunakan uji normalitas, uji homogenitas, dan uji t berpasangan (paired sample t-test) terhadap data pretest dan post-test, sedangkan analisis data psikomotorik dan afektif peserta didik tiap pertemuan dianalisis menggunakan uji Friedman. Hasil penelitian ini menunjukkan bahwa perlakuan yang diberikan dapat meningkatkan hasil belajar siswa (hasil belajar kognitif, afektif, dan hasil belajar psikomotor) pada materi cahaya dan optika.Kata Kunci: cahaya dan optika, inkuiri terbimbing, pendidikan karakter
Kajian Sebaran Air Panas di Kelurahan Tobololo dan Kelurahan Sulamadaha Kecamatan Pulau Ternate Kota Ternate
Authors: Rajab Abdul Haris , Ningrum Rohima Wahyu , Jumaris Jumaris
Published: April 2021

Tujuan dari penelitian ini adalah untuk mengetahui potensi panas bumi dan sebaran air panas di sekitar Kelurahan Tobololo dan Kelurahan Sulamadaha, Pulau Ternate bagian utara. Hasil pengukuran magnetik di lapangan haruslah dihitung terlebih dahulu agar bisa  mendapatkan anomali magnetik yaitu medan magnet total dikurangi dengan magnet variasi harian, serta dikurangi dengan medan magnet utama bumi(nilai IGRF). Nilai IGRF 40137.7, Nilai medan magnet total yang terbaca pada fluxgate magnetometer sangat bervariasi antara 44907.9 nT s/d 73351.8 nT ,Total koreksi  yang didapat setelah medan magnet total dikurangi magnet variasi harian dan dikurangi nilai IGRF. Nilai anomali magnetik yang didapat setelah nilai magnet total dikurangi dengan nilai total koreksi yaitu berkisar antara 4791.7 nT s/d 33235.9 nT. Sebaran suhu airtanah dengan lokasi pengukuran memanjang lebih dari 5 km dan lebar 1 km dari bibir pantai hingga ke arah ketinggian dimana sumur gali atau sumur bor masih ditemukan. Suhu airtanah berkisar 26oC – 35.5 oC. Suhu air tertinggi hanya terdapat di dua titk mata air, yakni di Desa Tobololo dan Desa Sulamadaha. Ini menunjukkan perbedaan suhu hampir pada semua air sumur.Kata Kunci: air panas, gunung api, magnetik.
Uji Kualitatif Dan Kuantitatif Golongan Senyawa Organik Dari Kulit Dan Kayu Batang Tumbuhan Artocarpus Dadah Miq
Authors: Indarto Indarto
Published: April 2021

Sekarang ini kimia tumbuhan atau yang dikenal dengan fitokimia telah berkembang menjadi suatu disiplin ilmu tersendiri, yang berada di antara kimia organik bahan alam dan biokimia tumbuhan, serta mempunyai kaitan erat dengan keduanya. Bidang perhatian fitokimia adalah aneka ragam senyawa organik yang dibentuk dan ditimbun oleh tumbuhan, yaitu mengenai struktur kimiannya, biosintesisnya, perubahan serta metabolismenya, penyebarannya secara alamiah, dan fungsi biologinya. Penentuan secara kualitatif dapat memberikan informasi keberadaan senyawa atau golongan senyawa tertentu, dan kuantitatif memungkinkan kita membedakan mana komponen utama dan mana komponen tambahan dalam campuran. Tumbuhan A. dadah Miq. merupakan salah satu spesies dari Artocarpus. Uji yang dilakukan secara kualitatif meliputi uji tanin, saponin, flavonoid, steroid, terpenoid, dan kardiak glikosida. Uji kuantitatif meliputi uji fenol total, alkaloid, tanin, dan flavonoid. Dari uji yang telah dilakukan, sampel kulit batang positif mengandung senyawa tanin, saponin, flavonoid, terpenoid, alkaloid, dan kardiakglikosida. Sedangkan sampel kayu batang positif mengandung senyawa tanin, saponin, flavonoid, steroid, terpenoid, dan alkaloid. Sedangkan uji yang dilakukan secara kuantitatif meliputi uji fenol total, tanin, alkaloid, dan uji flavonoid. Dari uji ini, kandungan dalam kulit batang sebesar 0.0529 % untuk fenol total, 27,7176 % tanin, 9,455 % flavonoid, dan 2,756 % alkaloid. Sedangkan dalam kayu batang sebesar 0,5555 % fenol total, 0,8987 % tanin, 3,312 % flavonoid, dan 0,694 % alkaloid.Kata kunci : artocarpus dadah,  miq fitokimi