cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
Tommy
Contact Email
lpkdgeneration2022@gmail.com
Phone
+6285695565558
Journal Mail Official
tommy@admi.or.id
Editorial Address
Perumahan Bumi Dirgantara Permai Blok CL NO 5, Jl. Durian, Jati Asih, Bekasi, Provinsi Jawa Barat, 17421
Location
Kab. bekasi,
Jawa barat
INDONESIA
International Journal Science and Technology (IJST)
Published by Asosiasi Dosen Muda Indonesia
ISSN : 28287223     EISSN : 28287045     DOI : https://doi.org/10.56127/ijst.v1i2
Core Subject : Science, Engineering,
Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering
International Journal Science and Technology (IJST) is a scientific journal that presents original articles about research knowledge and information or the latest research and development applications in the field of technology. The scope of the IJST Journal covers the fields of Informatics, Mechanical Engineering, Electrical Engineering, Information Systems and Industrial Engineering. This journal is a means of publication and a place to share research and development work in the field of technology.
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 93 Documents
 4   5   6   7   8 
IMPLEMENTATION OF SIMPLEX METHOD FOR OPTIMIZATION PROFIT ON CHOCOLATE FLAVOR BREAD PRODUCTION Liwun, Stephanus Benedictus Bera; Tri Mulyanto; Aminah Yumna Aqilah
International Journal Science and Technology Vol. 2 No. 3 (2023): November: International Journal Science and Technology
Publisher : Asosiasi Dosen Muda Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56127/ijst.v2i3.1000

Abstract

Companies that carry out production activities necessarily want the company's goals to be achieved, one of which is optimal profit. Maximum profit in production can be realized by planning the optimal amount of production. The purpose of this study consists of four, namely making a profit formulation to maximize the amount of production, determining the optimal number of brown bread variants that will be produced at Win Bakery, determining the maximum profit in producing bread at Win Bakery, and predicting profits for return on investment. This research was conducted using a linear programming model. Decision variables determine the decisions that will make to achieve the optimal solution. The objective function is a function that describes the goals or objectives in linear programming problems. Relating to the optimal use of resources to obtain maximum profit or to use minimum costs. A constraint function is a form of formulation of the obstacles faced in achieving the goal. The results obtained from the research are the decision variables, with X1 being the number of square chocolate bread productions and X2 is the number of round chocolate bread productions. The objective function of the profit per unit is to maximize Z = 1000X1 + 800X2. The constraint function is the raw material used in making chocolate bread. Furthermore, the optimization of production with POM-QM resulted in the number of square chocolate bread production of as many as 13 piecess and round chocolate bread as many as 25 piecess so that the profit gained in one day was Rp. 32,500. The next calculation, the break-even point by entering fixed costs, variable costs, and profits obtained results in units of 55 units and the total profit earned is Rp. 1,777,00.
PRODUCTION PROCESS OF 60 FT UGL ROLLERS ON FLAT TOP (CFT) WAGON CONTAINER TYPE TRAINS AT PT. INDUSTRIAL TRAIN Abdul Rahman Agung Ramadhan; Nugroho, Eko Aprianto
International Journal Science and Technology Vol. 2 No. 3 (2023): November: International Journal Science and Technology
Publisher : Asosiasi Dosen Muda Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56127/ijst.v2i3.1076

Abstract

A train is a form of rail transportation consisting of a series of vehicles pulled along a railroad track to transport cargo or passengers. There are different types of trains designed for specific purposes. A train may consist of a combination of one or more locomotives and attached railcars, or several self-propelled units (or sometimes a single or articulated powered coach, called a railcar). To move the train, a component called a bogie is needed. Bogies are generally used for wheels with more than 2 axles (As) in one train car. One of the bogie components found on a train is a bolster. The function of the bolster is to support the bogie against the train body. In making UGL 60 FT bolsters, it begins with material preparation. The materials used are S690Q steel with a tensile strength of 690 MPa, S355J2+N steel with a tensile strength of 355 MPa and E235 steel pipe with a tensile strength of 235 MPa. After that, it enters the cutting process, namely the process of cutting plate-shaped material using a plasma cutting machine and cutting steel pipes with a bandsaw machine, then the chamfering process, which is the process of cutting corners to form a chamfer with an angle of 0 - 90 degrees, after that the Bending process, namely the process of bending on one of the bolster components, then the assembly process, namely the process of connecting a single part of the bolster and continuing the welding process using a 350 ampere GMAW welding machine, and the last is the Quality Control (QC) process, namely the material testing process using the Non Destructive Test (NDT) method. in the form of Magnetic Test (MT) and Visual Test (VT) testing. Quality Control (QC) is carried out to check the feasibility of an object being produced. If there is a workpiece that is not good then the workpiece will be repaired again. And if the workpiece is said to be feasible, it will be brought to the assembly process in the assembly division.
TWO-AXIS SOLAR PANEL TRACKING DEVICE PROTOTYPE WITH IOT-BASED MONITORING Awan, M. Asep Rizkiawan; Sofwan, Agus Sofwan; Multi, Abdul
International Journal Science and Technology Vol. 3 No. 1 (2024): March: International Journal Science and Technology
Publisher : Asosiasi Dosen Muda Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56127/ijst.v3i1.1086

Abstract

The aim of this project is to develop a dual-axis solar tracker equipped with an IoT monitoring system with the BLYNK platform using Arduino. Overall, solar energy refers to technologies that generate power from sunlight. The utilization of solar energy has been around for centuries and has been widely used without relying on other energy supplies. However, its importance is increasing as environmental awareness grows and the availability of other energy sources, such as fuel, becomes limited. Sun tracking systems are an effective technology that can improve the efficiency of solar panels by following the movement of the sun. With the help of this system, solar panels can automatically orient themselves to sunlight, improve sunlight detection, and increase electricity collection because solar panels can always be in a bright position. This project focuses on developing a two-axis sun tracker using Arduino Uno as the main controller. For its implementation, four light-sensitive resistors (LDRs) are used to detect sunlight and maximum light intensity. Two servo motors are used to move the solar panel according to the direction of sunlight detected by the LDRs. Furthermore, an ESP8266 WIFI device is used as an intermediary between the device and the IoT monitoring system. The IoT monitoring system is a website that serves to store data. The efficiency of this system is tested and compared with single axial sun tracking. The results show that the two-axis solar tracking system generates more power, voltage, and current compared to the single axial solar tracker.
LEVEL OF CUSTOMER SATISFACTION USING THE KANO AND ROOT CAUSE ANALYSIS (FISH BONE) METHOD IN INTERNET SERVICE PROVIDER COMPANIES (SP Product Case Study) Kartinah, Dwi
International Journal Science and Technology Vol. 2 No. 3 (2023): November: International Journal Science and Technology
Publisher : Asosiasi Dosen Muda Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56127/ijst.v2i3.1087

Abstract

The study in this research uses the Kano method and root cause analysis to measure customer satisfaction and find out which attributes are maintained and which attributes are improved. After obtaining the attribute results, they are then implemented in a fishbone diagram to solve the root of the problem, so that a solution to the problem can be found. is at PT Telekomunikasi XYZ. The results of this research showed that customers of SP products were categorized as attractive at 40%, must be 4%, indifferent 28%, one dimensional 28%, according to calculations, the highest value of better (increase) was attribute 2 "SP products are easy to use" is 0.68. Meanwhile, the highest worse (decrease) value was attribute 3 "SP product completeness", with a value of -0.92.
ANALYSIS OF INVESTMENT SENSITIVITY IN RUSUNAWA TAMBAK WEDI CITY SURABAYA Mawardianto, Hayadi Agus; Laksono Djoko Nugroho; Haris Muhammadun
International Journal Science and Technology Vol. 2 No. 3 (2023): November: International Journal Science and Technology
Publisher : Asosiasi Dosen Muda Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56127/ijst.v2i3.1098

Abstract

Based on the Surabaya City RPJMD for 2021-2026, strategic issues in government affairs in the field of housing and residential areas focus on providing Rusunawa capacity which is not proportional to the number of applicants. To overcome this problem, the Surabaya City Government took the initiative to build Rusunawa Tambak Wedi in the City of Surabaya. This research aims to evaluate the amount of investment receipts and determine the acceptance limits, with the aim of minimizing risks in Rusunawa investment activities. The research results show that the Medium Tariff Structure 1, Lower Tariff Structure 1, and Lower Tariff Structure 2 are considered feasible if analyzed based on the Net Present Value (NPV), Internal Rate of Return (IRR), Benefit Cost Ratio (BCR), and Payback Period methods. (PP) but the Medium Tariff Structure 2 and the Upper Tariff Structure were declared unfeasible if analyzed using the same method. Sensitivity analysis shows that each Rusunawa rental rate structure has a different level of sensitivity to changes in variables, such as residential unit rental rates, management fees, and management fee subsidies provided by the Government.
SCHEDULING ANALYSIS IN CONSTRUCTION WITH THE PERT METHOD USING MICROSOFT PROJECT Prasetyo, Baskoro Adhi; Haris Muhammadun; Laksono Djoko Nugroho
International Journal Science and Technology Vol. 2 No. 3 (2023): November: International Journal Science and Technology
Publisher : Asosiasi Dosen Muda Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56127/ijst.v2i3.1099

Abstract

Since 2017, the Drinking Water Supply System (SPAM) of the Capital District (IKK) Ibu has not been functioning due to damage to the pipe network due to road widening work, damage to generators and pumps, thus PDAM West Halmahera will build a new SPAM network system with a gravity system and will analyze scheduling using the Program Evaluation and Review Technique (PERT) method using Microsoft Project 2021 to carry out development planning which has results where the time required for construction is 320 days and can be completed with a percentage level of 95.35%, with a critical path found in the implementation work occupational health and safety, preparation, piping work, procurement and installation of house connections and commissioning test work with a time of 273 days.
ANALIZE DIE CASTING PROCESS AND STRUCTURE OF MOLDING FOR INTERNAL COMBUSTION ENGINE VEHICLE Muhammad Yusuf Nurfani; Ramadhan, Abdul Rahman Agung
International Journal Science and Technology Vol. 2 No. 3 (2023): November: International Journal Science and Technology
Publisher : Asosiasi Dosen Muda Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56127/ijst.v2i3.1102

Abstract

Die casting is part of manufacturing process for making metal product, especially internal combustion engine of vehicle. Molding is component for making product from metallurgy process or polymer process. Basically, all part of molding process will be using 3 conditions of process. First is solid raw material for process production, second is melting process of raw material for making product using molding and third is solid for part of finish product after process molding process. In this research will analyze of molding process and structure of engine for internal combustion engine vehicle. Mold casting will be using specification for SUV capacity 2.7L. basic raw material is silica sand, resin, bentonite, and sea coal. The result show that after process mixing optimal pressure from machine to molding is 109675,8 N. and spot test check result show that, after process die casting no any crack founding by 10 specimens of engine of vehicle.
IMPROVING MOBILITY IN KEDIRI CITY WITH MKJI ANALYSIS 1997 AND TIME SLICE AT SIMPANG EMPAT DHOHO PLAZA Hidiyati, Evita Fitrianis; Nugroho, Laksono Djoko; Haris Muhammadun
International Journal Science and Technology Vol. 2 No. 3 (2023): November: International Journal Science and Technology
Publisher : Asosiasi Dosen Muda Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56127/ijst.v2i3.1110

Abstract

The city of Kediri, as the third largest city in East Java, has cultural heritage, history and natural beauty that attracts visitors from various regions. However, population growth and motorized vehicles cause traffic jams. Signalized intersections, which are a solution to control intersection conflicts, require knowledge of intersection saturation flows to plan efficient traffic management. Analysis methods such as MKJI 1997 and Time Slice with Vehicle Operating Cost (BOK) calculations help design effective solutions. This research shows that adjusting cycle times, increasing effective width, and optimizing signals can improve transportation system performance and reduce congestion in Kediri City. Cycle time analysis taking into account factors such as vehicle type, traffic volume, and vehicle speed resulted in a cycle time of 90.7 seconds. The impact can be seen in the Degree of Saturation (DS) at various intersection arms, with service variations from E to F. Research also shows a decrease in waiting time/queuing for signal lights from 135 seconds to 118 seconds, which results in a decrease in the degree of saturation (DS) and changes in time cycle. The use of Smart Traffic Lights and traffic engineering, such as immediate left turns on the east arm and additional signs, is required. Evaluation of congestion cost efficiency shows that changing the value of side barriers can save Rp. 22,679,183 in the next five years.
MINOR FACTORS IN WORK ELEMENTS OF SMK3 IMPLEMENTATION OF PCI GIRDER ERECTION WORK BASED ON PP NO 50 OF 2012 Prasetyo, Djoko; Wateno Oetomo; Sajiyo
International Journal Science and Technology Vol. 2 No. 3 (2023): November: International Journal Science and Technology
Publisher : Asosiasi Dosen Muda Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56127/ijst.v2i3.1118

Abstract

Proving that the implementation of the Occupational Safety and Health Management System (SMK3) can be a reference that regulates various activities therein, as well as managing K3 systematically and comprehensively in a complete management system as an effort to prevent work accidents. The SMK3 assessment on the Probolinggo Banyuwangi Toll Road Development Project Package 1 aims to find out how much level of SMK3 implementation is being implemented, what factors influence the fulfillment of SMK3 implementation and then provide a response as an effort to take corrective action/improvement. Based on the results of the audit and analysis consisting of 166 criteria (Advanced Level) assessment as stated in Government Regulation No. 50 of 2012 concerning SMK3, it is known that the number of criteria fulfilled/appropriate is 149 criteria with an application percentage value of 89.76% and there are 17 The criteria are not met/not appropriate, namely with a percentage value of 10.24% (Minor Category). These results are included in the implementation assessment level category (Satisfactory). The implementation of SMK3 in the Probolinggo Banyuwangi Package 1 Toll Road Construction project is in accordance with and refers to applicable laws and regulations.
EVALUATION OF ELECTRIC CAR RESEARCH TRENDS THROUGH BIBLIOMETRIC ANALYSIS: A Literature Review Lazuardy, Ardhy
International Journal Science and Technology Vol. 2 No. 3 (2023): November: International Journal Science and Technology
Publisher : Asosiasi Dosen Muda Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56127/ijst.v2i3.1166

Abstract

Due to increasing environmental and sustainability concerns, electric cars have become a significant research focus in recent years. To understand the development and Impact of scientific research related to electric vehicles, a bibliometric analysis was carried out. This research collects data from Scopus, using the keywords "electric vehicle" OR "electric vehicles" OR "E.V." AND "product development." The results of the analysis show significant growth in the number of publications related to electric cars over the last few years. Analysis of publication trends identified periods of substantial growth and declining trends that may reflect changes in research focus. Specific journals and conferences were also identified as crucial platforms for research in this domain. Mapping of researcher collaborations and analysis of author contributions reveals a growing collaboration network within the electric car research community. Keyword analysis provides an in-depth look at dominant research themes, while citation analysis highlights works that have greatly influenced the field. This analysis provides valuable insight into the evolution of electric car research, identifying key trends, researcher collaborations, and the Impact of particular works. These findings can be used to guide future research and understand the rapid dynamics of developments in the electric car domain.

Page 6 of 10 | Total Record : 93

 4   5   6   7   8 

Filter by Year

2022 2025


Reset
Filter By Issues
All Issue Vol. 4 No. 1 (2025): March: International Journal Science and Technology Vol. 3 No. 3 (2024): November: International Journal Science and Technology Vol. 3 No. 2 (2024): July: International Journal Science and Technology Vol. 3 No. 1 (2024): March: International Journal Science and Technology Vol. 2 No. 3 (2023): November: International Journal Science and Technology Vol. 2 No. 2 (2023): July: International Journal Science and Technology Vol. 2 No. 1 (2023): March: International Journal Science and Technology Vol. 1 No. 3 (2022): November: International Journal Science and Technology Vol. 1 No. 2 (2022): July: International Journal Science and Technology Vol. 1 No. 1 (2022): March: International Journal Science and Technology