Journal of Applied Science, Engineering, Technology, and Education
Journal of Applied Science, Engineering, Technology, and Education (ASCI) is an international wide scope, peer-reviewed open access journal for the publication of original papers concerned with diverse aspects of science application, technology and engineering.
Articles
299 Documents
<![CDATA[Reliable Data Acquisition System for a Low-Cost Accelerograph Applied to Structural Health Monitoring ]]>
<![CDATA[Muñoz, Milton]]>;
<![CDATA[Guevara, Remigio]]>;
<![CDATA[González, Santiago]]>;
<![CDATA[Jiménez, Juan Carlos]]>
<![CDATA[ Journal of Applied Science, Engineering, Technology, and Education Vol. 3 No. 2 (2021) ]]>
Publisher : <![CDATA[Yayasan Ahmar Cendekia Indonesia ]]>
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DOI: 10.35877/454RI.asci159
<![CDATA[This paper presents and evaluates a continuous recording system designed for a low-cost seismic station. The architecture has three main blocks. An accelerometer sensor based on MEMS technology (Microelectromechanical Systems), an SBC platform (Single Board Computer) with embedded Linux and a microcontroller device. In particular, the microcontroller represents the central component which operates as an intermediate agent to manage the communication between the accelerometer and the SBC block. This strategy allows the system for data acquisition in real time. On the other hand, the SBC platform is used for storing and processing data as well as in order to configure the remote communication with the station. This proposal is intended as a robust solution for structural health monitoring (i.e. in order to characterize the response of an infrastructure before, during and after a seismic event). The paper details the communication scheme between the system components, which has been minutely designed to ensure the samples are collected without information loss. Furthermore, for the experimental evaluation the station was located in the facilities on a relevant infrastructure, specifically a hydroelectric dam. The system operation was compared and verified with respect to a certified accelerograph station. Results prove that the continuous recording system operates successfully and allows for detecting seismic events according to requirements of structural health applications (i.e. detects events with a frequency of vibration less than 100 Hz). Specifically, through the system implemented it was possible to characterize the effect of a seismic event of 4 MD reported by the regional seismology network and with epicenter located about 30 Km of the hydroelectric dam. Particularly, the vibration frequencies detected on the infrastructure are in the range of 13 Hz and 29 Hz. Regarding the station performance, results from experiments reveals an average CPU load of 51%, consequently the processes configured on the SBC platform do not involve an overload. Finally, the average energy consumption of the station is close to 2.4 W, therefore autonomy provided by the backup system is aroud of 10 hours.]]>
<![CDATA[Improving the Ability of Implementing Fun-Based Learning Through Structured Clinical Supervision on Mathematics Teachers at SMA Negeri 1 Barru, Indonesia ]]>
<![CDATA[Gani, Abdul]]>
<![CDATA[ Journal of Applied Science, Engineering, Technology, and Education Vol. 3 No. 2 (2021) ]]>
Publisher : <![CDATA[Yayasan Ahmar Cendekia Indonesia ]]>
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DOI: 10.35877/454RI.asci163
<![CDATA[This study aimed to determine how much the increase in the ability of implementing fun-based learning for the mathematics teachers of SMA Negeri I Barru through structured clinical supervision. The method used in this study was a school action research. The population of this study were all mathematics teachers at SMA Negeri 1 Barru which consisted of 6 teachers: 3 males and 3 females. This study was conducted in the odd semester of the 2019/2020 school year for 6 meetings. Data in this study were collected by using observation sheets and structured clinical supervision observation instruments ranging from pre-observation, the observation of learning implementation to the observation of feedback implementation for each supervised teacher. The data were analyzed by using qualitative and quantitative descriptive analysis. The overall results of this study were based on the implementation of structured clinical supervision starting from the results of pre-observation of the teaching and learning preparation: syllabus, lesson plans for teaching materials and assessment instruments, as well as the results of observation of the assessment of the learning process.]]>
<![CDATA[The Enhancement in Mastery Abilities of Geometric Transformation Formulas Through Play Lucky Card Technique on the Students of Class VIII-2 at SMP Negeri 3 Barru, Indonesia ]]>
<![CDATA[Talha, Muhammad]]>
<![CDATA[ Journal of Applied Science, Engineering, Technology, and Education Vol. 3 No. 1 (2021) ]]>
Publisher : <![CDATA[Yayasan Ahmar Cendekia Indonesia ]]>
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DOI: 10.35877/454RI.asci164
<![CDATA[The method used in this study was a classroom-based action research that aimed to improve students' mastery of the geometric transformation formulas through the Play Lucky Card technique. This study was conducted in class VIII.2 of SMP Negeri 3 Barru with 23 students. The results achieved after the study was carried out for two cycles were as follows: In the first cycle, there were 40.63% of students who had the ability to master the geometric transformation formulas in the sufficient category. Whereas in the classical results, it was found that the students' average score was 68.06 in the 54.6-64.5 interval or in the sufficient category. In the second cycle, there were 56.25% of students who had the ability to master the mathematical formulas in the high category, 28.13% of students had the ability to master the mathematical formulas in the very high category. From the results of the final evaluation of the second cycle, it was classically found that the students' average score was 76.75 in the 64.6-84.6 interval or in the high category. Based on the results of the final evaluation, the students of class VIII.2 had an absorption amounted to 86.75%, and other data showed that the students of class VIII.2 who scored > 65 (84.38%), were in the high and very high category. Thus, it can be concluded that there was an increase in the ability to master the geometric transformation formulas of class VIII.2 students at SMP Negeri 3 Barru after the implementation of Play Lucky Card technique, there was an increase in motivation and activeness as well as the presence of students following the mathematics learning process. This was reflected in the number (quantity) of students who raised their hands to work on the questions on the blackboard which tended to increase from one meeting to the next. Moreover, almost all students submitted every homework according to predetermined deadlines.]]>
<![CDATA[Novel eco-friendly linear gel for oil well recovery through efficient hydrofracturing ]]>
<![CDATA[Murthy, R. V. V. Ramana]]>;
<![CDATA[Murthy, K. S. R.]]>;
<![CDATA[Chavali, Murthy]]>
<![CDATA[ Journal of Applied Science, Engineering, Technology, and Education Vol. 3 No. 2 (2021) ]]>
Publisher : <![CDATA[Yayasan Ahmar Cendekia Indonesia ]]>
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DOI: 10.35877/454RI.asci165
<![CDATA[The linear gel is prepared by treating bio-diesel with various water samples collected from different water bodies. The new biodiesel based linear gel was employed in the recovery of oil wells through hydrofracturing and pilot tests were conducted for the first time. The viscosity of gel was measured at various bottom hole-circulating temperatures and it was found to vary from 32 to zero dial reading in the range of 45ºC to 60ºC. The gel was observed to break at 45ºC and 60ºC in 120 min. So the final temperature was selected as 60ºC for the application of gel for coal bed methane (CBM) wells. It was observed that higher levels of salinity in water helped in optimum utilization of gel in real-time application.]]>
<![CDATA[Design and development of instant linear gel for coal bed methane gas operations ]]>
<![CDATA[Murthy, R. V. V. Ramana]]>;
<![CDATA[Murthy, K. S. R.]]>;
<![CDATA[Chavali, Murthy]]>
<![CDATA[ Journal of Applied Science, Engineering, Technology, and Education Vol. 3 No. 2 (2021) ]]>
Publisher : <![CDATA[Yayasan Ahmar Cendekia Indonesia ]]>
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DOI: 10.35877/454RI.asci167
<![CDATA[Linear gel fracturing fluids are expressed with an extensive range of materials/polymers in an aqueous base. Earlier we developed fracturing linear gel with fossil diesel, bio-diesel and also used suspending anti-settling agents and emulsifiers. Here we report on a novel and an efficient method for the preparation of linear gel direct mix with water, guar gum and sodium acetate together instantly. In this research work, we used water instead of diesel without any need to mix anti-settling agents, suspending agents, emulsifiers that resulted in 30 viscosity linear gel. The degradation pattern observed from the breaker test showed that a reduction in gel viscosity depends on time, temperature & breaker concentration. Ammonium per sulphate or Ammonium per oxidisulphate and enzyme-G were used for oxidation purpose to break the gel gradually at a particular static temperature. Observations from experiments revealed that a small concentration of breaker provides rapid break compared to oxidative breakers. This article, designing of fracturing fluids describes how to use the fluid's viscosity generated by the gelling agents like guar gum for CBM operations.]]>
<![CDATA[Analysis of the Development of Home Scale Machines in the Food and Beverage Industry: (Case Study in Ready-to-Serve Coffee Sub-Sector) ]]>
<![CDATA[Cakranegara, Pandu Adi]]>
<![CDATA[ Journal of Applied Science, Engineering, Technology, and Education Vol. 3 No. 2 (2021) ]]>
Publisher : <![CDATA[Yayasan Ahmar Cendekia Indonesia ]]>
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DOI: 10.35877/454RI.asci372
<![CDATA[Indonesia is a country experiencing demographic growth, especially in the productive age. This growth has several consequences, among others, from income and consumption levels. The increase in the people's standard of living affects various industries, including the food and beverage industry. Apart from macroeconomic and demographic factors, technological factors play an essential role in increasing production. In this case, the availability of coffee machines on a home scale. This machine's existence enables small businesses to start their coffee cafe businesses to compete with large coffee companies. This research uses existing analytical tools between market potential analysis and boarding house structure analysis. This analysis found that there was a decrease in the barrier to entry to the ready-to-serve coffee industry. As a consequence, there are vast opportunities for small businesses to start a business using home-scale machines. This study explains the phenomenon of the rapid development of small-scale coffee in Indonesia in recent years.]]>
<![CDATA[The Description of Mathematics Problem Solving Skills Reviewed from The Learning Style in Students of Grade VI of SDN 44 Rampoang Palopo ]]>
<![CDATA[Hasnah HP]]>
<![CDATA[ Journal of Applied Science, Engineering, Technology, and Education Vol. 4 No. 1 (2022) ]]>
Publisher : <![CDATA[Yayasan Ahmar Cendekia Indonesia ]]>
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DOI: 10.35877/454RI.asci565
<![CDATA[This research aimed for the mathematical problem-solving ability of comparative materials reviewed from visual learning styles in classroom students. This research was descriptive research, which seeked to find out and describe the mathematical problem-solving skills of comparative materials in terms of learning styles in classroom students. Processed data was the ability to solve mathematical problems in terms of uditory and visual learning styles. The data collection technique used was in the form of giving questionnaires, writing testers and interviews. The questionnaire used was a statement-shaped questionnaire to analyze each student's learning style, namely visual and auditory, problems used in the test of problem-solving skills in the form of comparative materials, which amount to 2 numbers, and interviews aimed to find out the learning skills of students in solving comparative problems. The validity of the data used was triangulation method. Data analysis techniques are by using data reduction, data presentation, and verification. Based on the processing of the data, it was obtained that subjects with mathematical problem-solving skills based on visual learning styles on SV1 subjects were able to meet all four indicators of problem-solving ability according to Polya's steps, namely understanding problems, drawing plans, implementing plans, and reevaluating.]]>
<![CDATA[Analysis of Hot-Air Supplemented Solar Drying Using Computational Fluid Dynamics Technique ]]>
<![CDATA[Aduewa, Taiwo]]>;
<![CDATA[Oyerinde, Ajiboye]]>
<![CDATA[ Journal of Applied Science, Engineering, Technology, and Education Vol. 4 No. 1 (2022) ]]>
Publisher : <![CDATA[Yayasan Ahmar Cendekia Indonesia ]]>
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DOI: 10.35877/454RI.asci615
<![CDATA[Energy is a crucial input in the process of economic, social and industrial development of any nation. Fluctuating solar insolation and late sunrise hour has led to poor quality dried biological material production. A simulation of hot-air supplemented solar dryer (HSSD) designed for such purpose is presented for temperature distribution based on direct solar irradiation of 1423 W/m2 of Akure, Nigeria (5.304º Latitude 7.258º Longitude). The environmental conditions in the hybrid dryer were measured during a day of operation. The model of the dryer was created and a numerical model was established to allow replicating the internal environmental conditions of the dryer. The airflow, temperature, radiative heat flux and other parameters inside the HSSD system were simulated using computational fluid dynamics (CFD) approach. The simulated result was compared with the calculated and estimated parameter values for the HSSD. The simulated air-flow pattern and temperature distribution on the horizontal and vertical planes in the drying chamber were analyzed and the results revealed spatial homogeneity of drying air condition. However, there is higher velocity profile at the outlet vent due to buildup of hot air at outlet vent. There was relatively low interference of external temperature in the drying chamber.]]>
<![CDATA[The Influence of Concentration Chitosan of A Shell Snail to Lower Levels of BOD and COD on Waste Laundry ]]>
<![CDATA[Kasmudin, Karim]]>;
<![CDATA[Fitria, Fitria]]>;
<![CDATA[Artiningsih, A.]]>
<![CDATA[ Journal of Applied Science, Engineering, Technology, and Education Vol. 4 No. 1 (2022) ]]>
Publisher : <![CDATA[Yayasan Ahmar Cendekia Indonesia ]]>
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DOI: 10.35877/454RI.asci718
<![CDATA[Disposal of laundry waste directly in the river is the cause of high river pollution. Laundry wastewater resulted in an increase in BOD and COD parameters so that it had a negative impact on ecosystem life. The coagulation process using chemicals can reduce BOD and COD parameters in wastewater but have negative effects on health. Chitosan from snail shells can be used as an alternative coagulant that is environmentally friendly because it contains about 70% - 80% chitin. This study aims to synthesize chitosan biocoagulants from snail shells and to test the effectiveness of snail shell chitosan in the treatment of laundry wastewater. Fourier Transform Infra-Red (FTIR) analysis showed that the deacetylation rate of chitosan obtained was 78.06%. Coagulation was carried out on wastewater using variable concentrations and stirring speed. The results showed that the optimum dose of snail shell chitosan biocoagulant was at a concentration of 0.4%. At this dose, the coagulant can bind to the most optimal contaminants so that it can reduce the BOD and COD values ​​in laundry waste and the Fast Stirring Speed ​​of 100 rpm is the optimum stirring speed because large speeds will produce excessive shear forces and prevent the desired floc arrangement.]]>
<![CDATA[Factual Power Loss Diminution by Enhanced Frog Leaping Algorithm ]]>
<![CDATA[Kanagasabai Lenin]]>
<![CDATA[ Journal of Applied Science, Engineering, Technology, and Education Vol. 3 No. 2 (2021) ]]>
Publisher : <![CDATA[PT Mattawang Mediatama Solution ]]>
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DOI: 10.35877/454RI.asci112
<![CDATA[This paper proposes Enhanced Frog Leaping Algorithm (EFLA) to solve the optimal reactive power problem. Frog leaping algorithm (FLA) replicates the procedure of frogs passing though the wetland and foraging deeds. Set of virtual frogs alienated into numerous groups known as “memeplexes”. Frog’s position’s turn out to be closer in every memeplex after few optimization runs and certainly, this crisis direct to premature convergence. In the proposed Enhanced Frog Leaping Algorithm (EFLA) the most excellent frog information is used to augment the local search in each memeplex and initiate to the exploration bound acceleration. To advance the speed of convergence two acceleration factors are introduced in the exploration plan formulation. Proposed Enhanced Frog Leaping Algorithm (EFLA) has been tested in standard IEEE 14,300 bus test system and simulation results show the projected algorithm reduced the real power loss considerably.]]>
