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Dwi Sulisworo
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Journal of Novel Engineering Science and Technology
Published by Indonesian Institute of Science and Technology Research
ISSN : 29618916     EISSN : 29618738     DOI : https://doi.org/10.56741/jnest.v1i02
Core Subject : Science, Social, Engineering,
Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Environmental Science Mechanical Engineering
Journal of Novel Engineering Science and Technology is a multi-disciplinary international open-access journal dedicated to natural science, technology, and engineering, as well as its derived applications in various fields. JNEST publishes high-quality original research articles and reviews in all of the disciplines mentioned above. All papers submitted will go through a rapid peer-review process to ensure their quality. Submissions must contain original research and contributions to their field. The manuscript must adhere to the author’s guidelines and have never been published before. All accepted manuscripts will be indexed in DOAJ, EBSCO, and Google Scholar. The indexation in SINTA, Scopus, and WoS will be provided in the future to provide maximum exposure to the articles.
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 57 Documents
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Entrepreneurial Skills for Operational Adaptation to Emerging Trends in the Electrical Industry Yusuf, Mohammed Adamu; Ibanga, Isaac John
Journal of Novel Engineering Science and Technology Vol. 2 No. 03 (2023): Journal of Novel Engineering Science and Technology
Publisher : The Indonesian Institute of Science and Technology Research

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56741/jnest.v2i03.383

Abstract

The study's primary purpose was to assess the entrepreneurial skills required by electrical engineering students for operational adaptation to emerging trends in the Electrical Industry in Nigeria. The study, which adopted a descriptive survey research design, was conducted in northeast Nigeria and had three research questions and three null hypotheses. The study population was 211, which comprised 178 Lecturers of electrical/electronics from the three Federal Universities and seven polytechnics offering electrical/electronics engineering and 49 electrical/electronics industry supervisors in 33 establishments in North Eastern Nigeria. The study adopted a purposive sampling technique in which the entire population was used as the sample for the analysis. A structured questionnaire developed by the researcher titled Questionnaire for Entrepreneurial Skills Required by Electrical Engineering Students for Operational Adaptation to Emerging Trends (QESTREESOAET) was used as an instrument for data collection. Three experts validated the instrument, and a reliability index of 0.89 was obtained using Cronbach Alpha. The mean statistic was used to answer the research questions, while the t-test was used to test the null hypotheses at a 0.05 significance level. The study's findings revealed that ten managerial, ten accounting and 18 marketing entrepreneurial skills were identified as necessary skills for operational adaptation to emerging trends in the Electrical Industry in Nigeria. Based on the findings, the study recommended that the National University Commission (NUC), National Board for Technical Education (BTE) and the National Commission for Colleges of Education (NCCE) should develop a curriculum that will adequately introduce the concept of management and its importance to the students for adequate assimilation and practice for all students of electrical engineering.
Comparison of K-Means Algorithm and DBSCAN on Aftershock Activity in the Flores Sea: Seismic Activity 2019-2022 Aprianti, Anyela; Jufriansah, Adi; Donuata, Pujianti Bejahida; Khusnani, Azmi; Ayuba, John
Journal of Novel Engineering Science and Technology Vol. 2 No. 03 (2023): Journal of Novel Engineering Science and Technology
Publisher : The Indonesian Institute of Science and Technology Research

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56741/jnest.v2i03.393

Abstract

This study seeks to determine whether the clustering method can be used to analyze Flores Sea earthquake activity. In this investigation, the BMKG Repo serves as the source for real earthquake vibration data collection. The stages of this research include preparing the data in CSV format and then preparing the data to eliminate useless data by identifying missing data. On the basis of the research data, it was determined that the K-Means and DBSCAN methods are used to determine the clustering method for analyzing earthquake activity. In addition, the data is depicted using a graphical Elbow method so that we can determine the number of clusters of aftershocks in the Flores Sea. The results of the visualization of aftershocks that followed earthquakes in the Flores Sea between 2019 and 2022 revealed three distinct groups of earthquake source depths: 33 to 70 kilometers, 150 to 300 kilometers, and 500 to 800 kilometers. In terms of the shilhoute index parameter, the K-Means algorithm is preferable to the DBSCAN algorithm when clustering results are used to analyze earthquake activity.
The Effect of Attenuation on Simulation of Tsunami Wave Propagation Using FDM Ahdiany, Dian; Khusnani, Azmi; Jufriansah, Adi; Prasetyo, Erwin
Journal of Novel Engineering Science and Technology Vol. 3 No. 01 (2024): Journal of Novel Engineering Science and Technology
Publisher : The Indonesian Institute of Science and Technology Research

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56741/jnest.v3i01.395

Abstract

This study seeks to investigate the shape of the surface of tsunami waves using the finite difference method and the effect of the damping function on the simulation of tsunami wave propagation using Matlab-based visualisation. The effect of attenuation on the propagation of tsunami waves is measured by the variation in energy. The results of the investigation indicate that tsunami waves have a transverse wave form, with waves propagating in a perpendicular direction. In the meantime, the analysis of the damping function reveals a decrease in the value of energy; this indicates that if the damping function is provided, it will have the effect of reducing the wave energy and propagation speed of tsunami waves. This modelling clearly and realistically illustrates the results of wave movement visualisation and provides insight for disaster mitigation and coastal protection.
Simulation and Analysis of Hatchback Car Driving Comfort and Handling Performance Yamin, Mohamad; Mahandari, Cokorda Prapti; Mumtaz, Mega Maulida
Journal of Novel Engineering Science and Technology Vol. 2 No. 03 (2023): Journal of Novel Engineering Science and Technology
Publisher : The Indonesian Institute of Science and Technology Research

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56741/jnest.v2i03.399

Abstract

Hatchback cars are one type of car that is widely used in Indonesia. Indonesia has various road conditions. What is essential for a vehicle is its driving comfort and handling performance. These aspects are not only to fulfil individual interests but also to increase safety while driving.   The driving comfort can be tested through the chassis twisted road test, and the handling performance is tested through the double lane change test. Both tests are carried out by simulation with the CarSim software that applies mathematical modelling. The driving comfort is tested with a speed variation of 8 km/h to 16 km/h. Handling performance was tested with variations in loading of 1 passenger, four passengers, and four passengers + luggage. The parameters used to measure driving comfort are vertical acceleration, pitch, and roll angle. The parameters for handling performance are lateral acceleration, yaw and roll angle, and sheer force. The results show that the best driving comfort is obtained at 8 km/h. The handling performance value will improve if the vehicle load decreases.
Development of Square Patch Microstrip Antenna Design by Using Three Dimension Finite Difference Time Domain Methods Myo Tun, Hla; Pradhan, Devasis; Behera, Manjusha; Su Nwe, Myat; Mon Aye, Su; Than Mon, Aye; Min Naing, Zaw
Journal of Novel Engineering Science and Technology Vol. 2 No. 03 (2023): Journal of Novel Engineering Science and Technology
Publisher : The Indonesian Institute of Science and Technology Research

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56741/jnest.v2i03.412

Abstract

The paper mainly focuses on developing a Square-shaped Microstrip Patch Antenna Design using Three Dimension Finite Difference Time Domain Methods. There have been many time steps for analyzing the electric field in the antenna design. The time step has been started from 0 ps to 1991 ps. The electric field changes from the starting point to the end of the time step prove the analysis of the developed antenna system's input signal and return loss, especially the square-shaped microstrip patch antenna based on the FDTD technique. The simulation results confirm that the fabricated antenna system is a perfect candidate for high-frequency purposes. The analysis has been developed by using MATLAB language.
Nano Revolution: Advancing Civil Engineering through Nanomaterials and Technology Imoni, Samson; Onyebuchi, Mogbo; Tiza, Michael Toryila; Akande, Ebenezer Ogirima; Onuzulike, Collins
Journal of Novel Engineering Science and Technology Vol. 2 No. 03 (2023): Journal of Novel Engineering Science and Technology
Publisher : The Indonesian Institute of Science and Technology Research

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56741/jnest.v2i03.423

Abstract

Nanomaterials hold immense potential for transforming the field of civil engineering, offering enhanced performance and durability to infrastructure materials. However, their successful implementation faces several challenges and limitations that must be addressed. This abstract highlights the critical challenges associated with nanomaterials in civil engineering, including high production costs, scaling up production, health and safety risks, long-term performance and stability, standardisation and regulation, integration with existing construction practices, lack of comprehensive data and knowledge, and the need for multidisciplinary collaboration. Overcoming these challenges requires optimised manufacturing techniques, safety measures, extensive research, standardised protocols, and cooperation among researchers, engineers, manufacturers, regulators, and policymakers. Addressing these issues will pave the way for the safe and effective utilisation of nanomaterials in civil engineering, unlocking their potential to create sustainable, resilient, and innovative infrastructure systems.
Assessing Community Perspectives on Flood Preparedness and Mitigation Strategies in Nigeria Utsev, Joseph Terlumun; Onyebuchi, Mogbo; Onuzulike, Collins; Akande, Ebenezer Ogirima; Orseer, Ama Moses; Tiza, Michael Toryila
Journal of Novel Engineering Science and Technology Vol. 3 No. 01 (2024): Journal of Novel Engineering Science and Technology
Publisher : The Indonesian Institute of Science and Technology Research

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56741/jnest.v3i01.434

Abstract

This study aims to assess the perspectives of 200 respondents in Makurdi town, Benue State, Nigeria, on flooding using a Likert scale questionnaire. Flooding is a recurring challenge in the area, impacting lives and properties and necessitating effective flood management and mitigation strategies. The questionnaire covers various aspects of flooding, including frequency, property damage, flood warning systems, government efforts, climate change impact, community preparedness, and community-based initiatives. The findings reveal that flooding frequently occurs in Makurdi, emphasizing the urgency for comprehensive flood management strategies. Respondents acknowledge the personal impact of flooding, highlighting the need for effective mitigation measures. Improvement is needed in flood warning systems and government efforts to prevent flooding. Climate change's role in increasing flooding is recognized, emphasizing the importance of climate-resilient strategies. Community awareness and education are essential for reducing flood impacts, while public-private partnerships offer opportunities for collaborative flood management initiatives. The media's role in disseminating flood-related information is crucial. Stricter enforcement of building codes in flood-prone areas and community-based initiatives can contribute significantly to effective flood management. The implications of this study underscore the importance of community engagement, climate-resilient measures, and improved communication. Policymakers and local authorities can use these findings to develop targeted interventions for building a more flood-resilient Makurdi. By adopting proactive measures and community involvement, the town can enhance preparedness and adaptability to future flood scenarios, fostering a safer and more sustainable environment.
Exploring the Influence of Mental Workload on Performance Factors: A Case Study in Education Bariyah, Choirul; Oktafiandi, Fikram; Budijati, Siti Mahsanah
Journal of Novel Engineering Science and Technology Vol. 3 No. 01 (2024): Journal of Novel Engineering Science and Technology
Publisher : The Indonesian Institute of Science and Technology Research

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56741/jnest.v3i01.507

Abstract

Amid the COVID-19 pandemic, educational institutions in Indonesia, including vocational schools in Bontang, adopted remote learning policies to continue education. Surveys and interviews conducted with teachers at a vocational school revealed signs of stress, including quick temper, continuous mistakes in tasks, and forgetfulness. This study seeks to assess the level of mental workload, teacher performance, and the impact of mental workload factors on the performance of vocational teachers during the COVID-19 pandemic. Teacher performance is the dependent variable, while mental workload is the independent variable. Mental workload dimensions measured include time pressure, mental effort, and psychological stress, whereas teacher performance has work quality, accuracy/speed of work, initiative in work, workability, and communication. The study involved a sample of 20 teachers from a vocational school. Data analysis utilized simple linear regression processed using SPSS software. Subjective assessments of mental workload by teachers indicated that the highest proportion was the need for increased concentration during teaching activities. Regarding teacher performance, the highest ratios were associated with mastering teaching materials, managing the teaching-learning process, and leading the class during the COVID-19 pandemic. The simple linear regression testing results revealed a low influence of the existing mental workload on teachers' performance. The R square value indicated that mental workload affected teacher performance by 14.7%, with the rest influenced by variables outside the regression model.
Investigation of The Effect of Different Activators on Borosintering Process Ertürk, Lutuf; Selçuk, Burhan
Journal of Novel Engineering Science and Technology Vol. 3 No. 01 (2024): Journal of Novel Engineering Science and Technology
Publisher : The Indonesian Institute of Science and Technology Research

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56741/jnest.v3i01.511

Abstract

In parts produced by the P/M method, boriding is generally applied as a separate process after sintering. If the package boriding process is carried out during the sintering of the powder compact, sintering and boriding can be integrated; This not only prevents parts from deforming due to secondary heating, but can also reduce energy consumption. Carrying out sintering and boriding processes simultaneously is called Borosintering (B/S). Studies in the literature have stated that various material properties are improved thanks to the boride layers formed as a result of the borosintering process. It has been observed that the effect of different boronizing environments on the borosintering process has not been examined in any of the studies. In this study, media containing different weight ratios of silicon carbide (75%, 85%, 90%), boron carbide (5%, 10%, 20%) and the remainder one of various activators (Na2CO3, NaCl, Na2B4O7 (anhydrous borax) and NaF) in the boronizing medium were tested. Wear test (0.6 m/s sliding speed, 52 N load, 500 m distance, counter: 16MnCr5) was applied to some selected samples, the boride layer was examined by SEM, and elemental analysis was performed by EDX. Phases in the boride layer were detected by XRD. The hardness of the layer was measured with a microvickers test machine. The study showed that many different activators can be used in the borosintering process and that activators have a significant effect on the specifications of the boride layer. It was concluded that the NaF activator accelerates the formation of the boride layer more than other activators and creates a boride layer with better properties.
Investigating the Influence of Stereotypes on Female Students' Enrollment in Motor Vehicle Mechanic Work in Gombe State: Gender Bias and Career Aspirations Kumazhege, Stephen Z.; Umar, Hadiza; Ibanga, Isaac John
Journal of Novel Engineering Science and Technology Vol. 3 No. 01 (2024): Journal of Novel Engineering Science and Technology
Publisher : The Indonesian Institute of Science and Technology Research

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56741/jnest.v3i01.512

Abstract

This study addresses the persistent underrepresentation of female students in non-traditional vocational trades, specifically Motor Vehicle Mechanic Work, within Gombe State Technical Colleges. The total population for this study was 527 including administrators, teachers and parents of Motor Vehicle Mechanic Work trade students in Government Science and Technical Colleges in Gombe State. The sample size of the study was 116 determined using stratified random sampling. The study employed a descriptive survey research design, focusing on Gombe State in Nigeria, where seven Government Science and Technical Colleges were selected for the research. Three research questions and hypotheses guided the study. Data was collected through a researcher-developed structured questionnaire, and statistical methods including means, standard deviations, and ANOVA were used to analyze the data. Findings of the study indicated that parental influence, including preferences for preferred courses and concerns about safety, significantly influenced female students' enrollment in Motor Vehicle Mechanic Work. Peer group dynamics, such as imitation, aspirations, and subject choice, also played a role in shaping female students' decisions. Cultural factors, including perceptions of education, domestic roles, early marriage, and societal support, further influenced their choices. Interestingly, the study revealed a convergence of perspectives among Motor Vehicle Mechanic Works Trade teachers, school administrators, and parents regarding the identified influences. Recommendations stemming from these findings include targeted awareness campaigns for parents, peer mentorship programs, and collaborations with local leaders and institutions to challenge and reshape cultural norms that discourage female participation in non-traditional trades.

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