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Journal of Engineering and Scientific Research (JESR)
Published by Universitas Lampung
ISSN : 26850338     EISSN : 26851695     DOI : https://doi.org/10.23960/jesr.v4i1.78
Core Subject : Science, Engineering,
Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Engineering Industrial & Manufacturing Engineering
The focus and scopes of JESR is on but not limited to Mechanical Engineering and Material Sciences, Chemical and Environmental, Industrial and Manufacturing Engineering, Computer and Information Technology, Electrical and Telecommunication, Civil and Geodetic Engineering, Architecture and Urban Planning, Geophysical Science and Engineering, and other multidisciplinary research. The main criteria for publication are including the originality, scientific quality and interest to the aim and focus. JESR publishes twice a year for June and December editions. We welcome for publication collaborations with organizer of International Seminars, Conferences and Symposiums around the world. We are encouraging authors to submit their manuscript through our online system.
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 8 Documents
 1 
Search results for , issue "Vol. 6 No. 2 (2024)" : 8 Documents clear
Household Food Security: Evaluation of Influential Variables Using Exploratory Factor Analysis Jelita, Jelita; Irwansyah, Budi; Puji Lestari, Lilla; Darmayani, Satya; Nilna Minah, Faidliyah
Journal of Engineering and Scientific Research Vol. 6 No. 2 (2024)
Publisher : Faculty of Engineering, Universitas Lampung Jl. Soemantri Brojonegoro No.1 Bandar Lampung, Indonesia 35141

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jesr.v6i2.164

Abstract

Understanding the patterns that influence food security is very important. Deconstructing food security assessment into clearly defined variables might enhance its effectiveness. Efforts to improve food security measurements are generally prioritized on the most visible, objectively measurable, and familiar dimensions. In reality, there is sometimes confusion regarding which components of the food security definition a metrics is assessing, leading to the interchangeable use of indicators for distinct food security dimensions. Identifying, studying, and understanding these determining factors is the first step in exploring government policies and strategies to reduce food insecurity in any development. This research aims to analyze and identify those factors that have been identified through literature, their ranking is done by a questionnaire-based survey and an exploratory factor analysis approach. The literature identifies fifteen variables that have an impact on family food security. From these variables, four elements are extracted, which are household debt, distance to market, age of household head, and transportation cost dimensions. The findings of this study can serve as a point of reference for future research aiming to understand the impact of these four characteristics on family food security.
The Evaluation of Low-Cost Apartment Building Lampung University (Rusunawa Building) Using Greenship Rating Tools for Existing Buildings Widyawati, Ratna; Kustiani, Ika; Isneini, M; Girinandi, I; Aminudin, KM; Surahman, R; Aini , N; Mardhotillah , AN
Journal of Engineering and Scientific Research Vol. 6 No. 2 (2024)
Publisher : Faculty of Engineering, Universitas Lampung Jl. Soemantri Brojonegoro No.1 Bandar Lampung, Indonesia 35141

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jesr.v6i2.171

Abstract

The assessment of the green building at the Rusunawa Lampung University was conducted using the Greenship Rating Tools for Existing Building Version 1.1. Measurements were carried out to examine the overall sub-criteria of each greenship assessment category. The greenship rating tools for existing buildings version 1.1 are quite complex, as there are 6 (six) feasibility tests and sub-criteria. Based on field measurements and analysis of the green building assessment criteria using the greenship existing building rating tools version 1.1 at the Rusunawa Lampung University, as there used rating score of 17 points. The final result, the Rusunawa Building Lampung University does not have a rating for the Green Building criteria. To achieve a minimum bronze rating, and an assessment of the greenship assessment categories, the parties felt necessary to obtain recommendations for the improvements according to the assessment matrix that can enhance the Green Building rating for Rusunawa Lampung University.
Assessment of Data Over 3G and 4G LTE Networks in Ibadan Metropolis, Nigeria Olasunkanmi, Oluwaseun Joel; Awofolaju, Tolulope Tola; Emmanuael, Olowookere Oluwasomidotun
Journal of Engineering and Scientific Research Vol. 6 No. 2 (2024)
Publisher : Faculty of Engineering, Universitas Lampung Jl. Soemantri Brojonegoro No.1 Bandar Lampung, Indonesia 35141

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jesr.v6i2.173

Abstract

The routes plied are situated in Ibadan, Oyo State, Nigeria with different longitude and latitude respectively to assess the signal quality of 3G and 4G networks, compare four service/network providers in terms of coverage, service quality with respect to location, and determine areas with weak strength that needs optimization of different operators. The relevance of this study is to provide information as regards each operator in order to provide solution and to educate the subscribers for proper fixed or dynamic internet usage and voice calls. The work would benefit users within the city and the network providers. The mast is built in a sectorial way so that it could serve the arc and has a monitoring neighbor BTS (Base Transceiver Station) in sectorial way so it can circulate the area, though during the test, it was noticed that there are some areas with no monitoring neighbor BTS. The results show the received signal strength indicator (signal strength quality) of each network provider.
Analysis of The Accuracy of Earthquake Parameters In Minahassa Peninsula, Sulawesi, With Seismogram Waveform Data Processing Triyan, Aldi Muhammad; Suharno, Suharno; Yogi, Ida Bagus Suananda; Wibowo, Rahmat Catur
Journal of Engineering and Scientific Research Vol. 6 No. 2 (2024)
Publisher : Faculty of Engineering, Universitas Lampung Jl. Soemantri Brojonegoro No.1 Bandar Lampung, Indonesia 35141

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jesr.v6i2.200

Abstract

The Manihassa Peninsula is located in the northern part of Sulawesi, a meeting point for several major tectonic plates, namely the Sunda Plate, the Philippine Plate and the Pacific Plate. The movement and interaction between these plates cause active seismic conditions. Around the Manihassa Peninsula, there are also local faults that can cause earthquakes. This study aims to analyze the accuracy of earthquake parameters published by BMKG by processing waveform data using the author's SeisComP software. This study uses two waveform data of earthquake events in the Minahassa Peninsula of Sulawesi obtained from WebDC3 and processed using SeisComP software with the results of the first earthquake event with an occurrence time of 2024-08-01 00:00:05 UTC, a depth of 146 km, a location point of latitude 0.07 ?S, longitude 123.37 ?E, a magnitude of 5.4 Mw with RMS Res. 1.6 s and Azimuth Gap 144 ? and the second earthquake event with an event time of 2024-08-22 04:43:05 UTC, a depth of 120 km, a location point of latitude 0.09 ?S, longitude 123.50 ?E, a magnitude of 4.7 Mw with RMS Res. 1.0 s and Azimuth Gap 144 ?. From these results, it can be concluded that the search for earthquake parameters that occur using seismogram waveform data on SeisComP software with open-source limitations has quite a good accuracy.
An Assessment on Green Campus Rating of the University of Lampung Main Campus Kustiani, Ika; Matemba, Esther Elly; Widyawati, Ratna; Putra, Rahmad Syah
Journal of Engineering and Scientific Research Vol. 6 No. 2 (2024)
Publisher : Faculty of Engineering, Universitas Lampung Jl. Soemantri Brojonegoro No.1 Bandar Lampung, Indonesia 35141

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jesr.v6i2.203

Abstract

Currently, people perceive higher education as an industry that operates within a specific area. Therefore, the concept of a green campus or eco-campus can be linked to the concept of a green neighborhood. The aim of carrying out this assessment is to determine the performance of the Gedong Meneng Campus of the University of Lampung based on the Greenship Neighborhood Rating Tool criteria from the Green Building Council Indonesia (GBCI). The research data was obtained primarily based on observations, along with secondary data in the form of formal documents such as the campus master plan and several other documents. Based on the assessment result, despite the fact that the campus has implemented principles of the sustainable green neighborhood concept, it has not been able to obtain even the lowest rank of Greenship Neighborhood. With a score of 38 out of a total of 117 points, or 34.48%, it is only a small difference to achieve a bronze rank. The assessment results led to the formulation of a set of cost-free management solutions aimed at transforming the campus area into a green campus neighborhood. By improving community welfare, movement, and connectivity, as well as land ecology criteria, it is expected that the score would increase by 22 points, resulting in a Silver Rank that can be achieved.
Implementation of Healing Environment in A Beauty and Wellness Center (Case Study in Bandar Lampung City) Kamila, Nabila Aqil
Journal of Engineering and Scientific Research Vol. 6 No. 2 (2024)
Publisher : Faculty of Engineering, Universitas Lampung Jl. Soemantri Brojonegoro No.1 Bandar Lampung, Indonesia 35141

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jesr.v6i2.154

Abstract

The increasing interest in beauty and healthy lifestyles seems to have become a major need for Indonesian society. So it's not only women who take care of themselves, but now men also do the same thing. This of course needs to be balanced by providing beauty and health support facilities. Beauty and wellness center is an integrated beauty and health care center consisting of several facilities such as beauty clinics, salons, fitness and health centers. The method used in this research is a descriptive qualitative method, namely research on an object in real conditions using descriptive methods. Data processing is carried out by means of analysis to produce design concepts. Based on the analysis and design concept of the beauty and wellness center in Bandar Lampung City, it can be concluded that this building can facilitate beauty and health care in one integrated building. The application of the healing environment concept aims to provide a balance between humans, the environment and nature in the building so as to create a calm atmosphere and help restore the physical and mental health of building users.
Sweep Frequency Response Analysis for Assessment Deformation Core at Power Transformer Wilarso, Wilarso; Saepudin, Asep; Sholih, Hilman; Dharmanto, Asep
Journal of Engineering and Scientific Research Vol. 6 No. 2 (2024)
Publisher : Faculty of Engineering, Universitas Lampung Jl. Soemantri Brojonegoro No.1 Bandar Lampung, Indonesia 35141

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jesr.v6i2.156

Abstract

SFRA (Sweep Frequency Response Analysis) is a transportation test where one of the purposes of this test is to ensure that the core of the power transformer does not shift due to the journey from the factory to the field. The SFRA testing is divided into 4 frequency range areas from 20 Hz to 20 MHz and this research is focused on the frequency range below 2 KHz, based on experience at this frequency to check transformer core problems and specific failures in shifting power transformer cores. Based on the comparison results of SFRA testing carried out at the power transformer factory during the FAT (Factory Assessment Test) with testing in the field during the first SAT (Site Assessment Test) and with the second SAT testing, there are differences in the frequency area below 2 KHz, this shows that there is a problem in the area power transformer core, before drawing a final conclusion that there is a problem or deformation in the transformer core, you must look at the results of other tests carried out in the field such as ratio test, winding resistance test, tangent delta test, excitation current test, insulation resistance (megger test). ) winding and core-frame as well as impact recorder data during the journey from the factory to the field. If all other field test results are good then the power transformer is still in good condition and ready to operate and the difference in the graph at a frequency of less than 2 KHz in the SFRA test during SAT compared to when FAT is likely to be caused by residual magnetism that is still on the core side due to testing. DC before or. Residual magnetism can occur due to static electrical phenomena due to the oil purification process or due to the induction effect of the network grounding system where the power transformer is placed
Analysis of Axial Behavior in Cold-Formed Steel-Plywood Composite Walls Saputra, Muhamad Dandy Harjunaseta Hadi; Siswosukarto, Suprapto; Awaludin, Ali
Journal of Engineering and Scientific Research Vol. 6 No. 2 (2024)
Publisher : Faculty of Engineering, Universitas Lampung Jl. Soemantri Brojonegoro No.1 Bandar Lampung, Indonesia 35141

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jesr.v6i2.197

Abstract

The use of bricks as a wall material has significant drawbacks, including high weight and brittleness, making them vulnerable to damage, particularly under lateral loads like earthquakes. This study focuses on evaluating the axial performance of Cold-Formed Steel (CFS)-Plywood composite walls as an alternative to traditional brick walls. The study investigates the effects of bracing on axial compressive strength through laboratory testing of two composite wall specimens: one with bracing and one without. The results show that bracing significantly improves axial load capacity, with the braced specimen sustaining a maximum load of 69.666 kN, while the unbraced specimen withstood 64.413 kN. These findings highlight the potential of CFS-Plywood composite walls to serve as a lightweight, structurally sound alternative to brick walls, especially in multistory buildings subjected to axial loading.

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