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All Journal JGE (Jurnal Geofisika Eksplorasi) Journal of Geoscience, Engineering, Environment, and Technology KONSTAN - JURNAL FISIKA DAN PENDIDIKAN FISIKA CGANT JOURNAL OF MATHEMATICS AND APPLICATIONS Pancaran Pendidikan
Samsul Bahri
Departement Of Geophysical Engineering, University Of Pattimura
Humanities Chemistry Computer Science & IT Earth & Planetary Sciences Education Engineering Environmental Science Languange, Linguistic, Communication & Media Physics Other

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Teacher Perception of Implementation Learning Management System: CCR with Android Opensource Zainur Rasyid Ridlo; Rusdianto Rusdianto; Samsul Bahri; Luthfin Afafa
Pancaran Pendidikan Vol 10, No 1 (2021)
Publisher : The Faculty of Teacher Training and Education The University of Jember Jember, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (559.242 KB) | DOI: 10.25037/pancaran.v10i1.326

Abstract

The purpose of this research is mapping teacher perception on learning management system as second opinion in pandemic era. The methodology of research divided into three parts, namely preparation, action, and evaluation. The first step is preparation, include prepare to train the teacher to use CCR and android application opensourse. The second step is action, this section is most important in this research because in this section the teachers were practicing with CCR and android application within the teaching activities in online learning. After those steps, the final is evaluation, the teachers were evaluated using likert scale of the implementation of CCR and android open sourse. The result  of this research is most of the teachers feel easy in accessing CCR and android opensource application.
STEAM Education Based On Local Wisdom Of Coffee Plantation In Jember To Improve The Competitiveness at 21st Century Samsul Bahri; Linda Kusumawati; Lailatul Nuraini
Pancaran Pendidikan Vol 6, No 3 (2017)
Publisher : The Faculty of Teacher Training and Education The University of Jember Jember, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (513.168 KB) | DOI: 10.25037/pancaran.v6i3.62

Abstract

In the 21st century, an educational institution needs to consider coverage graduates that success is not confined to academic ability, but more to the abilities and skills that will help graduates to compete in a global and digital world today. An important skill to have in the digital age, such as critical thinking skills, problem-solving, creativity, ability to communicate and collaborate as well as having the ability in information technology.This study conducted to describe the learning outcome and response of students with the use of science teaching material that integrated STEAM education and based on Jember’s local wisdom. The design of development by using a model of ADDIE (Analysis, Design, Develop, Implement and Evaluate). This research has done in MTs. Bustanul Ulum, Jember in class VII A with 25 sample. The results of the validation average of 4.31 by experts 1, and 4.09 by experts 2. The results of students’ cognitive and psychomotor are 73.84 and 91.8. The average score of student’s response is 0.91. It means the teaching materials that developed is very valid, the value of the cognitive is good enough, the psychomotor is very high and the given of response is very positive, so the teaching materials are feasible to implement and this teaching materials can improved performance and student’s motivation to learn.
GLOBAL OPTIMIZATION VERY FAST SIMULATED ANNEALING INVERSION FOR THE INTERPRETATION OF GROUNDWATER POTENTIAL Samsul Bahri; Sanny Virginia Aponno; Zulfiah Zulfiah
JGE (Jurnal Geofisika Eksplorasi) Vol 8, No 3 (2022)
Publisher : Engineering Faculty Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jge.v8i3.233

Abstract

This study examines the inversion modelling of one-dimensional Schlumberger configuration resistivity data using the Very Fast Simulated Annealing (VFSA). Detailed identification and mapping of aquifer conditions is very important for the sustainable development of groundwater resources in an area. Vertical electrical sounding (VES) and surface electrical resistivity surveys have proven very useful for studying groundwater due to their simplicity and cost effectiveness. Global optimization inversion method also provides an inversion solution that is not expected to be trapped in a local minimum solution, so that it will get results that are closer to the actual situation. The VFSA method is inspired by phenomena in metallurgy related to the formation of crystals in materials caused by thermodynamic processes. This inversion scheme was tested initially with free noise synthetic data and with noise 5%. Furthermore, the program is applied to field data that has been measured in Ambon City, Maluku, Indonesia. The results of the VFSA inversion on field data obtained four layers consisting of top soil (141.2 ± 0,61 m) with a thickness of 1.43 m, andesite breccia rock (355.90 ± 0.46 m) with a thickness of 4 m, lapilli tuff (93.40 ± 0.31 m) with 30 m thick, then the last is the coarse tuff layer (34.30 ± 0.15 m) which is estimated as an aquifer.
Analysis of Bullet and Ball Collision using Theoretical Approach Gede Wiratma Jaya; Samsul Bahri
KONSTAN - JURNAL FISIKA DAN PENDIDIKAN FISIKA Vol 7 No 02 (2022): KONSTAN (Jurnal Fisika dan Pendidikan Fisika)
Publisher : Universitas Islam Negeri (UIN) Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20414/konstan.v7i02.187

Abstract

Collisions between two objects can be analyzed using the concept of the law of momentum conservation. In the case of a collision between two objects, namely a bullet and a ball, it is necessary to analyze using a theoretical approach. This research aims to analyze the velocity and height after a collision. Newton's law of conservation of momentum and Newton's second law in friction conditions are used as the basis of Calculation analysis using analytical and numerical methods. There are air friction coefficients with variations of 0.1, 0.2, 0.3, 0.4, and 0.5 N.s/m. This type of bullet used a 9 mm calibre with a velocity of 380 m/s. The mass of the bullet and ball is 0.008 kg and 0.3 kg, respectively. The results showed that increasing the air fraction coefficient resulted in lower velocity and height achieved by bullet and ball. The increasing discretization value makes the results of numerical calculations consistent with analytical calculations.
Pemodelan Pola Aliran Fluida 2D di Area Panas Bumi Menggunakan Metode Elemen Hingga Pendekatan Galerkin Samsul Bahri; Aditya Ramadhan
CGANT JOURNAL OF MATHEMATICS AND APPLICATIONS Vol 3, No 2 (2022): CGANT JOURNAL OF MATHEMATICS AND APPLICATIONS
Publisher : jcgant

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25037/cgantjma.v3i2.81

Abstract

Indonesia is one of the countries with the largest geothermal potential in the world, reaching 40% of the world's potential. In geothermal areas there are several layers such as overburden, reservoirs, fractures and heat sources. Subsurface fluid flow patterns in geothermal areas are a topic that is often discussed, especially for exploration purposes. Fluid flow basically uses the principles of Darcy's law, the principle of continuity and the Navier-Stokes equation. In solving this equation, a numerical approach can be used, where the results are close to the actual value. The numerical method used in this study is the finite element method, where the geometric domain is divided into smaller domains. The shape of the two-dimensional elements used is a non-linear triangle. The purpose of this study is to describe the pattern of fluid flow in porous media, especially in the case of geothermal areas and to determine the effect of rock permeability anomalies on fluid flow patterns. The results of modeling with the finite element method show that rock permeability affects the pattern of fluid flow. Liquid will flow at a higher velocity to an area of higher permeability.
Investigation of Groundwater Quality using Vertical Electrical Sounding and Dar Zarrouk Parameter in Leihitu, Maluku, Indonesia Samsul Bahri; Aditya Ramadhan; Zulfiah
Journal of Geoscience, Engineering, Environment, and Technology Vol. 8 No. 3 (2023): JGEET Vol 08 No 03 : September (2023)
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/jgeet.2023.8.3.12976

Abstract

The goal of this research is to obtain information related to aquifer quality, including aquifer protection capacity, transmissivity, and aquifer thickness based on vertical electrical sounding (VES) data and Dar-Zarrouk parameter analysis. The research area is located in Leihitu District, Ambon with 8 measurement points. The Leihitu region is included in the geological map of the Ambon sheet, Maluku, which consists of Late Pliocene - Holocene lithology, specifically Ambon volcanic rocks, reef limestones, and alluvial deposits. The rock resistivity measurements and layer thickness information were obtained using the VES method and analyzed with IP2WIN software. Based on VES data, aquifer properties were identified using Dar-Zarrouk parameters. That parameter consisted of longitudinal conductance, transfer resistance, longitudinal resistivity, and transfer resistivity. Longitudinal unit conductance is applied to evaluate the protective capacity class of the aquifer, the transfer resistance is beneficial for analyzing rock type and aquifer transmissivity. Based on the Dark-Zarrouk parameters, the longitudinal conductance (S) ranged from 0.0278 to 5.1213 mho and was classified as moderate to good protective capacity. The high S value results from a thick layer of clay at the observation point. This area also has a high enough transverse resistance (T) and then if related to aquifer transmissivity, this area is classified as a good transmissivity aquifer, especially at VES 2, VES 5, VES 6, VES 7, and VES 8. If correlated to rock formations, areas with limestone and volcanic rocks have better transmissivity than areas with alluvial deposits.
Co-Authors Aditya Ramadhan Gede Wiratma Jaya Lailatul Nuraini Linda Kusumawati Luthfin Afafa Rusdianto Rusdianto Sanny Virginia Aponno Zainur Rasyid Ridlo Zulfiah Zulfiah