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Alfian Qomaruddin
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REKAYASA
Published by Universitas Trunojoyo Madura
ISSN : 02169495     EISSN : 25025325     DOI : https://doi.org/10.21107/rekayasa
Core Subject : Science, Agriculture, Engineering,
Agriculture, Biological Sciences & Forestry Computer Science & IT Electrical & Electronics Engineering Engineering Physics
This journal encompasses original research articles, review articles, and short communications, including: Science and Technology, In the the next year publication, Rekayasa will publish in two times issues: April and Oktober.
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Articles 18 Documents
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Search results for , issue "Vol 17, No 1: April, 2024" : 18 Documents clear
Desain Prototipe Automatic Trash Rake dengan Metode Gaussian Mixture Model Erdani, Yuliadi; Candra, Wahyu Adhie; Aisyah, Aulia
Rekayasa Vol 17, No 1: April, 2024
Publisher : Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/rekayasa.v17i1.21148

Abstract

Trash rake is a trash netting tool used to transport trash in rivers. In its application, the operation of trash rake is still mostly done manually by the operator. In this case, there is no effectiveness in terms of the use of human resources or the effectiveness of machines. Therefore, in this study, a development was made on an automatic trash rake machine that works automatically if the waste stuck on the trash rake machine has experienced density. The image processing method used is the Gaussian Mixture Model (GMM). Used camera to capture the image of the density of the trash. The captured image is processed by GMM method. Then the data is processed on a computer and the data is displayed on the web. Arduino will drive the motor on the trash rake machine automatically with the parameters of the waste density data. The results obtained, the system can detect the level of waste density with an accuracy of 67.5% in bright, dim and dark conditions with the camera position according to the object observation area. The trash rake machine can turn on and off automatically based on the detected waste density.
Analisis Aspek Ketahanan Pangan Indonesia dengan Hard dan Soft Clustering, 2022 Diarty, Milie; Wijayanto, Arie Wahyu
Rekayasa Vol 17, No 1: April, 2024
Publisher : Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/rekayasa.v17i1.21774

Abstract

Food security is crucial all over the world. Even food security is one of the goals in the Sustainable Development Goals (SDGs). Indonesia has also made food security a goal in both short and long term development. As a country with geographical conditions that are coveted by other countries, it is only natural for Indonesia to be able to use existing resources to maximize domestic development, one of which is through food security. Provinces that are spread from Sabang to Merauke make Indonesia must be able to analyze the grouping of its food security by considering various indicators. Food security indicators are integrated into the aspects of food availability, affordability, and utilization. Clustering is a method in machine learning to be able to find out food security groupings in Indonesia. There are many clustering methods. Several methods that are widely used are Hierarchical, K-Means, and Fuzzy C-Means. All three can produce different groupings. In this study, it was found that there was one province that had low food security, namely Papua Province. In addition, some of the provinces that always have high food security are all provinces on the island of Java.
Analisis Structural Equation Modelling (SEM) Pengaruh Kepuasan Kerja, Lingkungan, Work Life Balance, Kompetensi dan Komitmen Pegawai Terhadap Kinerja Abdillah, Muhammad Afwan; Nugroho, Sukmo Hadi
Rekayasa Vol 17, No 1: April, 2024
Publisher : Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/rekayasa.v17i1.24344

Abstract

Employee performance is an important factor for companies operating in the public service sector, especially in water treatment companies, where their services cover the interests of many people. This research was conducted to see the influence of job satisfaction, work life balance, work environment, employee commitment and employee competency on employee performance in water treatment companies in Bekasi Regency, where there are still few researchers who have conducted research in water treatment companies, so we hoped that this research can become an additional reference for researchers who will choose similiar companies as the object of their research. The research was carried out using a survey method and using questionnaires as its tool, questionnaires were distributed online and face to face to employees within the Water Treatment Companies in Bekasi Regency. The distribution of the questionnaire was carried out in December 2023 with a total of 151 respondents. To test the hypothesis, the data obtained from the questionnaire was then analyzed using the SEM-PLS method. The research results show that the work environment, work life balance and employee competency have positive influence toward employee performance at Water Treatment Companies in Bekasi Regency.
Adopsi Blended Learning untuk Mahasiswa Perguruan Tinggi dengan Menggunakan Pendekatan Extended UTAUT Munsharif, Achmad; Pramana, Edwin; Zaman, Lukman
Rekayasa Vol 17, No 1: April, 2024
Publisher : Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/rekayasa.v17i1.25869

Abstract

This research aims to determine the factors that influence the understanding of students' intentions in higher education in using blended learning and determine the relationship between factors in the theoretical model. This research was conducted because there is still a lack of research in the world that discusses the application of blended learning in higher education in developing countries such as Indonesia. Blended learning in higher education during the Covid-19 pandemic is still needed today because educational institutions have limited space to accommodate students and to follow technological development trends and utilize them in the world of education. Questionnaires distributed via Google Form were used to collect data. The sample was 541 blended learning users from various universities in Indonesia. All variables from the theoretical model are measured using existing scales. Structural Equation Model (SEM) is used to analyze the theoretical model. SPSS and Amos are used as analysis support software. This research contributes to the theoretical understanding of Blended Learning adoption as well as practices and guidelines for higher education institutions to successfully implement Blended Learning in their institutions. Of the eight initial hypotheses, there are seven hypotheses that are very significant. The three factors with the largest magnitude are effort expectancy, performance expectancy and system functionality. Effort expectancy is the most influential factor in implementing blended learning in higher education institutions.
Pengaruh Perbedaan Ketebalan Media Filtrasi Pasir Sungai dan Arang Sekam Padi pada Penurunan Fosfat Air Limbah Calista, Alferina Vania Widya; Badriani, Ririn Endah; Fildzah, Cantika Almas
Rekayasa Vol 17, No 1: April, 2024
Publisher : Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/rekayasa.v17i1.21677

Abstract

WWTP Effluent at Regional Hospital (RSD) dr. Soebandi has not fullfilled quality standard of phosphate which is 3 mg/L. This study aims to determine the efficiency of removal phosphate levels and to determine the effect of variations in the thickness of the filtration media reducing phosphate levels in wastewater from hospital wastewater. Method in this research used a Slow Sand Filter Sandwich system with several variables. The thickness ratio of rice husk charcoal and river sand were (R1) 25:5 cm, (R2) 22,5:7,5 cm, (R3) 20:10 cm, (R4) 17,5:12,5 cm and (R5) 0:0 cm. Variations of time used were 120 and 180 minutes. The lowest and highest efficiency was found in reactor 1 (R1) with 120 minutes for contact time at 0% and reactor 4 (R4) with 180 minutes for contact time by 53%. P-value of rice husk charcoal, river sand and contact time is 0,05 that means it have a significant effect on phosphate concentration reduction. T-test result showed significant differences (p-value 0,05), reactors 1 4, reactors 1 5, reactors 2 4, and reactors 2 5.
A Review of Enforcement of Military Discipline Law to Establish Professionalism of the National Army to Strengthen National Security and Resilience Sungkono, Sungkono; Setyo, Amin; Suryokumoro, Herman; Kusumaningrum, Adi
Rekayasa Vol 17, No 1: April, 2024
Publisher : Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/rekayasa.v17i1.24653

Abstract

AbstractLaw enforcement practices in the military environment are still not in line with sectoral egos. Law enforcement has not been able to guarantee substantive order, truth and justice. When carrying out law enforcement in the military environment, it should not only refer to normative legal rules, but what needs to be done more is to make legal breakthroughs that are more effective and efficient. The discipline of a soldier is an absolute thing that is inseparable from his duty to maintain the security of the Unitary State of the Republic of Indonesia. This study analyzes contemporary forms of threats related to security and resilience and explains the similarities and differences in national resilience studies which aim to realize a national security system and develop national security systems in other countries. This research is normative juridical research, using a statutory approach, conceptual approach, and analytical techniques in the form of grammatical interpretation and systematic interpretation. This research explains that the forms of threats that occur in Indonesia include problems at the border, intolerance between ethnicities and between governments and religions, inequality in bureaucratic reform, inadequate law enforcement, and transnational crime. This research shows that national resilience and security are influenced by the professionalism of the Indonesian National Army. The safe conditions of a country cannot be separated from just security and defense but are in synergy with other factors, namely economics, politics, law, socio-culture, ideology, geography, demography and resources
Peningkatan Kualitas Kayu Lapis (Plywood) Skala Ekspor Menggunakan Metode Seven Tools dan New Seven Tools Devani, Vera; Fauziah, Ifa
Rekayasa Vol 17, No 1: April, 2024
Publisher : Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/rekayasa.v17i1.20585

Abstract

Perusahaan kayu lapis ini adalah perusahaan yang memproduksi kayu lapis, blockboard, dan polyester. Dalam proses pembuatan kayu lapis masih ditemukan produk cacat dengan persentase rata-rata dari bulan September 2020 sampai dengan februari 2021 (23,94%) melebihi standar perusahaan (2,5%) sehingga tidak dapat di ekspor. Metode yang digunakan untuk memecahkan permasalahan kualitas pada penelitian ini adalah Metode Seven Tools. Metode Seven Tools adalah metode yang digunakan untuk memecahkan permasalahan kualitas dalam proses produksi. Metode New Seven Tools merupakan metode untuk memetakan permasalahan kualitas secara terstruktur untuk mempermudah dalam pengambilan keputusan terhadap tindakan usulan perbaikan yang diberikan. Penelitian ini bertujuan untuk menentukan cacat dominan yang menjadi prioritas perbaikan kualitas, menentukan penyebab kecacatan dominan dan hubungan sebab-akibat, menentukan usulan perbaikan yang tepat untuk meminimasi cacat dominan. Berdasarkan hasil penelitian yang dilakukan, dapat disimpulkan bahwa jumlah cacat dominan terdapat pada jenis cacat lekang samping dengan jumlah cacat sebesar 18.976 dengan presentase cacat sebesar 61,17%. Jenis cacat dominan berikutnya adalah gembung dengan jumlah cacat sebesar 7.721 dengan presentase 24,89%. Faktor penyebab cacat lekang samping dan gembung yang paling berpengaruh terhadap kualitas kayu lapis adalah kadar air pada material kayu 21%, panas platen pada mesin hot press tidak rata, serta lem kayu tidak merata pada lembaran kayu dengan skor 9. Adapun usulan yang diberikan dan dapat diterapkan kepada perusahaan PT. Asia Forestama Raya adalah memberikan pelatihan kepada operator setiap tiga bulan, melakukan pengecekan dan perawatan mesin setiap bulan, mengganti roll pada mesin glue spreader serta melakukan inspeksi bahan baku setiap hari kerja.
Pengaruh Green Marketing dan Service Quality Terhadap Customer’s Perceived Satisfaction yang Dimediasi Oleh Brand Image Harjon, Ariescha; Nugroho, Sukmo Hadi
Rekayasa Vol 17, No 1: April, 2024
Publisher : Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/rekayasa.v17i1.24929

Abstract

This research aims to find out and complement information about the influence of green marketing and service quality on customer's perceived satisfaction mediated by brand image. The research used quantitative methods and survey through online questionnaires towards 712 inpatiens population of private hospitals in East Bekasi in September – November 2023. From 357 respondents, 293 filled out the questionnaire and 257 of them were taken as samples. This research has done through the validity and reliability tests, factor analysis KMO-MSA and Bartlett Test, and path analysis to answer the hypothesis and determine the structural equation model with SmartPLS 3.3.9. The results show that the five hypotheses have been proven positive and significant, namely the direct influence of green marketing on brand image; service quality on brand image; green marketing on customer's perceived satisfaction; service quality on customer's perceived satisfaction; and brand image on customer's perceived satisfaction. Indirectly, brand image acts as a partial mediator that mediates the positive and significant influence of green marketing on customer's perceived satisfaction; and the influence of service quality on customer's perceived satisfaction.

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