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International Journal of Engineering, Science and Information Technology

ijesty
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Published by Universitas Malikussaleh

ISSN : - EISSN : 27752674 DOI : -

Core Subject : Science, Education, Social, Engineering,

Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Library & Information Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Social Sciences Transportation

The journal covers all aspects of applied engineering, applied Science and information technology, that is: Engineering: Energy Mechanical Engineering Computing and Artificial Intelligence Applied Biosciences and Bioengineering Environmental and Sustainable Science and Technology Quantum Science and Technology Applied Physics Earth Sciences and Geography Civil Engineering Electrical, Electronics and Communications Engineering Robotics and Automation Marine Engineering Aerospace Science and Engineering Architecture Chemical & Process Structural, Geological & Mining Engineering Industrial Mechanical & Materials Science: Bioscience & Biotechnology Chemistry Food Technology Applied Biosciences and Bioengineering Environmental Health Science Mathematics Statistics Applied Physics Biology Pharmaceutical Science Information Technology: Artificial Intelligence Computer Science Computer Network Data Mining Web Language Programming E-Learning & Multimedia Information System Internet & Mobile Computing Database Data Warehouse Big Data Machine Learning Operating System Algorithm Computer Architecture Computer Security Embedded system Coud Computing Internet of Thing Robotics Computer Hardware Information System Geographical Information System Virtual Reality, Augmented Reality Multimedia Computer Vision Computer Graphics Pattern & Speech Recognition Image processing ICT interaction with society, ICT application in social science, ICT as a social research tool, ICT in education

Arjuna Subject : Ilmu Komputer (semua kategori) - Ilmu Komputer (Lain-Lain)

Articles 567 Documents

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Comparative Numerical Aerodynamics Performance Analysis of NACA0015 and NACA4415 Airfoils Kepekci, Haydar
International Journal of Engineering, Science and Information Technology Vol 2, No 1 (2022)
Publisher : Malikussaleh University, Aceh, Indonesia

The climate crisis caused by global greenhouse gas emissions has led to many disasters around the world in recent years. Some of these disasters are floods in various parts of Europe, melting of Arctic glaciers, and rising water levels in the oceans. People living on islands in Southeast Asian countries are forced to migrate due to rising water levels. With the increase in the frequency of such situations, life on earth is at risk. Greenhouse gas emissions harm not only humans but also animals and plants. The most effective measure that can be taken against this is to stay away from fossil fuels. With the use of fossil fuels, the carbon ratio in the atmosphere increases, and climatic imbalances occur. For this reason, the interest in alternative energy sources is increasing. Wind energy is one of the most widely used renewable energy sources. This is due to the low cost of installation and ease of use. The most important factor affecting the aerodynamic efficiency of wind turbines is the blade profiles. Numerous types of wing profiles have been designed and put into use. In this study, numerical analyzes of NACA 0015 and NACA 4415 airfoils at various angles of attack were performed by determining forces every five degrees between 0 and 20 degrees using ANSYS Fluent commercial software. Lift coefficients and drag coefficients were also calculated for the angles of attack used. According to the analysis results obtained, optimum attack angles were found for each airfoil. As a result, NACA0015 and NACA4415 airfoils were compared in terms of their performance.

Using Quizizz in Learning Assesment with Science Literacy Oriented in Science Learning Agustia, Mela; Aprilia, Charolin; Sari, Jenni; Hikmah, Darul; Risnita, Risnita
International Journal of Engineering, Science and Information Technology Vol 1, No 1 (2021)
Publisher : Department of Information Technology, Universitas Malikussaleh, Aceh Utara, Indonesia

In the covid-19 era, activities are forced to be done from home, including learning activities. Because of the limited network, students' interest in doing assignments becomes low. Thus teachers tend to ignore the assessment of learning outcomes during the pandemic. Even though assess learning outcomes is very important to do, one of them is a daily test which aims to find out the extent to which students understand the lesson. This study aims to determine the use of the Quizizz applicationwith science literacy oriented as a media for assessing learning outcomes during the study. The research method used is applied research, namely by implementing the Quizizz application in science literacy for online assessment. The data collection method used was a questionnaire. Quantitative data collection was obtained with closed questions. Questionnare is given after students doing daily tests using Quizizz with science literacy oriented. The daily test consists of 20 multiple choice questions of Motion with 10 literacy discourses. The result of daily test is devided into three part, namely high, medium and low. Based on the result of daily test 13 students who get high accuracy score, 9 students in medium cluster and 8 students in low cluster. Overall students give positive responses to using Quizizz with science literacy oriented and agree to be used in the daily test. Based on students perceptions, the use of Quizizz is very interest and science literacy help them remember what they have learned.. However, there needs to be assistance from the teacher when new students use Quizizz for the first time.

Synthesis of Cellulose Stearate Ester as Wet Strength Agent for Synthesis of Bio-polybag from Oil Palm Empty Fruit Bunch Kurniawan, Eddy; Mulyawan, Rizka; Tri Agusna PA, Angga; Armadani, Wika; Ginting, Zainuddin
International Journal of Engineering, Science and Information Technology Vol 2, No 2 (2022)
Publisher : Department of Information Technology, Universitas Malikussaleh, Aceh Utara, Indonesia

Biodegradable polybags are an alternative to overcome the weakness of synthetic polybags because of their degradation properties. Oil palm empty fruit bunches contain a lot of cellulose so that they can be used as a biodegradable polybag. Wet Strength serves to increase the physical strength of bio-polybags when exposed to water (in wet conditions) so that water content stability is required. In this study, Cellulose Stearate Esters were synthesized in an effort to increase the stability of the water content in bio-polybags. Cellulose Stearate Esters are synthesized through a transesterification reaction between -Cellulose isolated from Oil Palm Empty Fruit Bunches (EFB) with methyl stearate. The synthesis of cellulose stearate esters was carried out by refluxing for 2 hours using methanol solvent with various catalysts Na2CO3 5, 10, 15, 20 mg and with volume variations of methyl stearate 5, 10, 15. And the best variation was determined based on the degree of substitution test, namely with variations Na2CO3 catalyst 20 mg and volume of methyl Stearate 15 ml, amounting to 1.95. The result of the synthesis, namely cellulose stearate, was tested for functional groups by FT-IR spectroscopy and surface morphology using SEM. The formation of cellulose stearate is supported by the FT-IR spectrum in the wavenumber region of 3468.01 cm-1 indicating an OH group, 3062.96 cm-1 indicating a CH stretching group, 1695.43 cm-1 indicating a C=O group, cm-1 indicating a CH bending group, 1095.57cm-1 indicates a COC group, 609.51cm-1 indicates a (CH2)n4 group. The results of surface morphology analysis using SEM showed that the surface of cellulose stearate looked homogeneous, more regular and had denser cavities than -Cellulose

Analysis Of Project Success Inhibition Factors Zulyaden, Zulyaden; Rinaldy, Rinaldy
International Journal of Engineering, Science and Information Technology Vol 1, No 1 (2021)
Publisher : Department of Information Technology, Universitas Malikussaleh, Aceh Utara, Indonesia

In the implementation of activities we often find what is called a project. The project is an activity that must be completed in accordance with the specified target and time, so that the project can be regarded as a success in project implementation. One of the projects in ques-tion is the construction project. Construction projects in their implementation we often encounter various kinds of problems that arise from the elements involved in them, so this can hamper the success of a project that is being implemented. One problem that arises from the contractor factor and contract specification. The purpose of this study is to find out one of the main inhibiting factors in the successful implementation of construction projects in Aceh Province. Classification of construction services for respondents is all construction ser-vices from the middle class (M) to large classes (B). The data obtained the total population of construction services as many as 508 con-tactors from observations of projects that have been completed from 2010-2015 with funds from the Aceh Budget (APBA). By using the Slovin formula a total sample of 84 contractors was found. The method used in this study is a combined method, namely qualitative and quantitative methods through questionnaires. The independent variables reviewed are the contractor factor and the contract specification factor while the dependent variable is the success of the project. For statistical analysis the data process is done by using validity and reliability tests, while analyzing the data is done by using multiple linear regression with the help of Product Solution and Service Statis-tics (SPSS) version 22. The results of the study indicate that the contractor factor is one of the main inhibiting factors in the successful implementation of the project in Aceh Province.

Measurement of Human Work Reliability Using Systematic Human Error Reduction and Prediction Approach and Human Error Assessment and Reduction Technique Method Bakhtiar, Bakhtiar; Syukriah, Syukriah; Iqbal, Muhammad
International Journal of Engineering, Science and Information Technology Vol 2, No 1 (2022)
Publisher : Malikussaleh University, Aceh, Indonesia

CV. Raja Hati is a company that is engaged in the process of refinishing tires that have been bald into new ones. The tire retreading process has a relatively high percentage of defects, such as 14.8% Printing Process, 12.3% Surface Leveling, 8.6% Tire Curing, and so on. The problems in this study are the factors that cause defects in terms of human aspects, the types of errors that most often occur in the production process, and the value of human error probability (HEP) in the production process at CV. Raja Hati. This study aims to determine the factors that cause defects in terms of human aspects, the types of errors that most often occur in the production process and the value of human error probability (HEP) in the production process. The research was conducted using the SHERPA and HEART methods. The SHERPA methodâ€™s study results show that the types of errors that often occur in the tire retreading process are many wrong operator actions. Still, on the proper object (A7), the operator is wrong in dividing the time in doing work (A2), and the operator is not suitable for doing his job (A5). This study concludes that the factors that cause product defects in the tire retreading process are the absence of a procedure for correcting errors by 21.63%, the need for different techniques in doing work to facilitate operators by 27.04%, inexperienced operators by 12.36%, and inexperience and independent inspection has a percentage of 12.36%. The results of the calculation of the HEP value show that the average HEP value in the tire retreading process is 0.8552 or 85.52%, while the operator reliability value is 14.48%.

Characterization of Activated Carbon from Granulated Sugar Muhammad, Muhammad; Mulyawan, Mulyawan; Rahman, M R F; Suryati, Suryati
International Journal of Engineering, Science and Information Technology Vol 2, No 2 (2022)
Publisher : Department of Information Technology, Universitas Malikussaleh, Aceh Utara, Indonesia

Activated carbon that potentially acts as an adsorbent was prepared from granulated sugar. The activated sugar was prepared through a dehydration process followed by a chemical activation process with a concentrated NaOH solution. To comprehend the properties of prepared ready carbon, characterization of the carbon was needed to be conducted. The conducted methods for prepared activated carbon were FTIR for detecting present functional groups attached to carbon, BET to identify the porous structure of synthesized carbon, SEM method as a morphological indicating method on synthesized carbon, and carbon thermal stability characteristic information from the TGA method. It was found that the prepared activated carbon contained various functional groups. The distinguished functional groups presented were carboxylic acid, free alcohol, NH2, and SO3. The readily activated carbon showed a rough surface to enhance the adsorption process on the synthesized carbon from the SEM characterization method. BET on the readily activated carbon revealed that the activated carbon exhibited type IV isotherm, consisting dominantly of mesopores and micropores as a minority. TGA characterization method showed that the thermal stability of carbon was significantly unstable in the range of 100â„ƒ and around 200â„ƒ. It implies that the prepared activated carbon contained OH as one of its functional groups. With all the characterization methods conducted on the readily activated carbon from granulated sugar, it was found that the prepared carbon had the potential to be utilized as an adsorbent. Moreover, it is suggested that the granular sugar-based carbon should be investigated in the following future study in the wastewater treatment process.

Identification of Factors Caused The Risk of Time Delays in The Pulogadung Widiyanto Nugroho, Anwar; Tukiyo, Tukiyo; Fithra, Herman
International Journal of Engineering, Science and Information Technology Vol 2, No 2 (2022)
Publisher : Department of Information Technology, Universitas Malikussaleh, Aceh Utara, Indonesia

To provide livable housing for the residents of DKI Jakarta, especially in urban areas with minimal land availability, the DKI Jakarta Provincial Government supports the development of vertical housing to offset the high demand for housing and limited land. Through the Department of Public Housing and Settlement Areas, the Provincial Government of DKI Jakarta is implementing the Pulogadung-East Jakarta PIK Flats Construction Project. When this research was carried out, the Pulogadung-East Jakarta PIK Flats Construction Project was entering week 63, with work progress reaching 47.689% of the planned 48.725%, or in other words, this project experienced a delay of 1.036% of the scheduled. Therefore, it is necessary to conduct research that aims to identify the factors that cause the risk of time delays, analyze the most dominant factors that lead to the risk of time delays, and look for the necessary handling actions so that the risk of time delays that occur does not increase or can also be prevented or resolved. In this study, the descriptive quantitative method is carried out by surveys, interviews, and distributing questionnaires to respondents. The risk rating was analyzed using MS. Excel is based on a probability and impact matrix, which aims to determine variables with a high level of risk, then expert validation is carried out regarding risk management. And from the analysis results obtained, six variables that cause the risk of time delays in the Pulogadung-East Jakarta PIK Flats Development Project work can occur, namely Late Payment of Term by Owner, Design Changes, Lack of Coordination While Working, Inaccuracy of Material Order, Time, Limited Material Availability in the Market, and the Occurrence of the Corona Outbreak (Covid 19). The results of expert recommendations for the six variables can be expressed in handling actions.

Analysis of Time Comparison and Costs of Implementing Road Implementation with Time Cost Trade-Off Method Shintia Wulandari, Evita; Piadi, Koes; Restuti Wulandari, Diah Ayu
International Journal of Engineering, Science and Information Technology Vol 1, No 1 (2021)
Publisher : Malikussaleh University, Aceh, Indonesia

Project for the construction of the Gunungsari Banjar Sugihan - Kandangan diversion channel, Surabaya, in the implementation of this project there was a delay in how many works. One way to anticipate this delay is by accelerating it using the Time Cost Tread Off method, through alternative working hours (overtime) and additional labor. The method is used so that the project can run smoothly and so that the project can be accelerated in completion. Time-Cost Trade-Off analysis, better known as TCTO. jobs included in the critical cross and jobs that are not allowed to delay are as follows: Urugan Sirtu (solid), Lean concrete fc 10 Mpa work, Rigid pavement fc 30 Mpa work finishing growing, iron beginning work.

The Effect Of Limestone and Fly on Clay Stabilization of CBR and Soil Compressive Strength Syafwandi, Syafwandi; Lonarissa Harditya Putri, Vandika Nadia; Karsono, Bambang
International Journal of Engineering, Science and Information Technology Vol 2, No 2 (2022)
Publisher : Department of Information Technology, Universitas Malikussaleh, Aceh Utara, Indonesia

The subgrade is the road access construction project must have a firm soil bearing capacity to withstand its load. Clay soil has high water content and expands quickly. Various ways have been done to overcome it; one is improving the original soil properties using the stabilization method. The research was conducted to stabilize expansive clay soil using fly ash and limestone with a percentage of fly ash of 5%, 10%, 15%, 20% fly ash, and 25% limestone. Existing soil was used from a good pad construction project in Ujung Pangkah, Gresik, East Java. The tests carried out are specific gravity, Atterberg, compaction, CBR, and UCT tests. The CBR test was conducted to determine the appropriate CBR value to support DDT. The compressive strength of the soil was tested using the UCT test. The study results of the effect of fly ash and limestone are an increase in the dry weight of the earth and a decrease in soil water content. The rise in CBR and maximum soil compressive strength with a mixture variation of 20% fly ash + 25% limestone, Qu is 2.98 kg/cm 2, and CBR is 10.56%. This is due to a decrease in the water content, thereby increasing the dry weight of the soil.

Analysis of Flood Peaks Using The Mean Annual Flood Method Hidayat, Acep; Basysyar, Basysyar; Rief Alkhaly, Yulius; Bin Ali, Md Nadir
International Journal of Engineering, Science and Information Technology Vol 2, No 2 (2022)
Publisher : Malikussaleh University, Aceh, Indonesia

The Kedang Pahu river is one of the tributaries of the Mahakam river. The research plan is located in Damai District, West Kutai Regency, East Kalimantan province. Recently, the Damai District and Damai Seberang areas have flooded activities that have caused the surrounding settlements to flood into residential areas and block existing road access. Planning analysis and knowing the annual flood elevation is essential. The analysis uses the method of calculating the mean annual flood (MAF) to search for the average annual flood discharge data and the search for the average annual elevation. Data validation using a simple linear regression method produces a correlation coefficient of 58.67%, or R-value = 0.5867. The analysis results in the value of Q1 or the 1st year period, the mean annual flood rate of the average annual flood discharge is 2576.0695 mÂ³/second and the value associated with the magnifying factor (GF) is the average annual flood discharge rate of Q5=3014,00 mÂ³/ sec, Q10 = 3529.22 mÂ³/sec, Q20 = 4095.95 m/sec, Q50 = 5049.10 mÂ³/sec, Q100 = 5847.68 mÂ³/sec, Q200 = 6852.34 mÂ³/sec, Q500 = 8423.75 mÂ³/sec Q1000 = 9917.87 mÂ³/sec. The analysis results at HEC-RAS 5.07 based on manning analysis showed the elevation values were Q1=18.47m, Q5=18.85m, Q10=18.86m, Q20=19.18m, Q50=19.74m Q100=19.99m. Researchers only show elevations up to Q100 or the 100th year because of limited data and the reviewed data accuracy.

Page 11 of 57 | Total Record : 567

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Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name Dahlan Abdullah

Contact Email dahlan@unimal.ac.id

Phone +62811672332

Journal Mail Official ijestyjournal@gmail.com

Editorial Address Jl. Tgk. Chik Ditiro, Lancang Garam, Lhokseumawe, Aceh - Indonesia, 24351

Location Kota lhokseumawe, Aceh INDONESIA

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Contact Name
Dahlan Abdullah

Contact Email
dahlan@unimal.ac.id

Phone
+62811672332

Journal Mail Official
ijestyjournal@gmail.com

Editorial Address
Jl. Tgk. Chik Ditiro, Lancang Garam, Lhokseumawe, Aceh - Indonesia, 24351

Location
Kota lhokseumawe,

Aceh

INDONESIA