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Alfian Qomaruddin
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Universitas Trunojoyo Madura Jl. Raya Telang - Kamal, Bangkalan Kode Pos 69162
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INDONESIA
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.
Arjuna Subject : -
Articles 504 Documents
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Implementation of a Digital-Based Early Safety Warning System Program on a Branch Logistics Company in Jakarta Hamidya, Syifa Ula; Ardyanto, Yustinus Denny; Paskarni, Indriati
Rekayasa Vol 15, No 3: Desember 2022
Publisher : Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/rekayasa.v15i3.18381

Abstract

Lack of involvement in interventions to carry out observations and analysis that causes the conditions and behavior of employees at one of the logistics companies at the Jakarta branch. The research aims to reduce potential unsafe of conditions unsafe actions in the workplace environment. This process involves employees recognizing potential problems in the workplace within the procedures of observation, feedback, and employee behavior interventions. The methodology used in this study is a descriptive method to describe present or ongoing issues. This method allows for assessing a condition and program implementation to make further improvements in the future. There are still several obstacles in implementing the K3 Program (Safety, Health, and Environment), where the program is still being performed manually. BBS STAR program does not cover unsafe conditions and unsafe actions, so reporting workers to management regarding conditions at work still not optimal yet. Employees also have some difficulty reporting unsafe conditions and unsafe actions in the workplace. SEWS program can be a preventive step in the occurrence of potential danger. The quality of employees could increase with the habit of analyzing dangerous aspects of the workplace environment. Employees' involvement in the SEWS contribution program can also help establish moral consistency.Keywords: K3, Unsafe conditions and unsafe actions, SEWS Program
Model Penilaian Strategi Pertahanan Matra Laut Negara Kepulauan Berbasis System Dynamic Martin, Richard; Laksono, Amin Setyo; Riniwati, Harsuko; Widagdo, Setyo
Rekayasa Vol 15, No 3: Desember 2022
Publisher : Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/rekayasa.v15i3.15465

Abstract

The maritime dimension defense strategy model is a part of the Archipelago Marine Defense Strategy, referring to the dynamics or developments in the strategic environment and the capabilities of available national resources. In carrying out an assessment of the defense strategy of the archipelagic nation's sea dimension, it is determined by the influence and interaction of interrelationships between balancing aspects of Naval Forces and Integrated Fleet Weapons Systems (SSAT) with Threat aspects as a complex system, so an analysis is needed to get a value on the assessment defense strategy of the maritime dimension of the archipelagic state, which consists of aspects of developing the strength of the Navy and aspects of Potential Threats. So it needs to be compiled in a dynamic model that can represent a value in the assessment of the marine defense dimension of the archipelagic nation which is projected based on the time dimension up to the next 15 years. In this research, the researchers compiled a system dynamic model approach to obtain an assessment of the value of each variable and sub-variable. The results of the formulation and simulation model on the assessment of the sea dimension defense strategy, obtained values based on the following strategic scenarios: (1) Fleet In Being defense strategy at an index value of 5.72, (2) Blockade defense scenario 5.72, (3) Defense scenario Decesive Battle 5.73, (4) combined scenario between fleet in being and blockade 5.72, (5) combined scenario of fleet in being and decesive battle 5.78, (6) combination scenario of blocakde and decesive battle 5.73 and value sea defense based on current SSAT capabilities in the 15th year of 5.9, included in the alert category/quite safe.
Pengelolaan Komponen Biotik dan Abiotik di Kawasan Kompleks Gedung Parlemen DPR RI Jakarta Hugua Hugua; Alia Rahmatillah; Dinnur Garista Wirawan
Rekayasa Vol 15, No 2: Agustus 2022
Publisher : Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/rekayasa.v15i2.18383

Abstract

This research was conducted at the DPR RI Building Office in September 2022 with the aim of examining the extent to which management influences the Biotic, Abiotic and Cultural Environment in realizing the DPR RI as a Modern Parliament with a sample of 30 people from DPR RI Office Employees. This study uses a descriptive quantitative method, namely research that describes the research object at the current state based on the facts as they are, then analyzed and interpreted using IBM SPSS Version 27 Software. The research results of the biotic environment variable (X1) have a positive and significant effect on the manifestation of the DPR RI as a modern parliament complex (Y) with an R value of 0.877, while the coefficient of determination (R2) is 0.769 or 76.9%. This shows that the biotic environment variable (X1) has a contribution of 76.9% to the realization of the DPR RI as a modern parliament (Y) variable. The abiotic environment variable (X2) has a positive and significant effect on the Realization of the DPR RI as a modern parliament (Y), the R value is 0.786. While the coefficient of determination (R2) is 0.617 or 61.7%. This shows that the Abiotic Environment variable (X2) has a contribution of 61.7% to the Realization of the DPR RI as a Modern Parliament (Y) variable. Biotic environment (X1), abiotic environment (X2) and cultural (X3) variables have a positive and significant effect on the realization of the DPR RI as a modern parliament (Y). The R value is 0.945, while the coefficient of determination (R2) is 0.893 or 89.3%.
Pembelajaran Mendalam Pengklasifikasi Ekspresi Wajah Manusia dengan Model Arsitektur Xception pada Metode Convolutional Neural Network Purnawarman Musa; Wahid Khairul Anam; Saiful Bahri Musa; Witari Aryunani; Remi Senjaya; Puji Sularsih
Rekayasa Vol 16, No 1: April 2023
Publisher : Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/rekayasa.v16i1.16974

Abstract

Deep learning is a neural network that creates innovations that give computer-implanted problem-solving expertise. One of the principles of computer vision is a detection system with a vision framework that can identify things encountered in the same manner as a human vision system. Using an artificial intelligence-based Convolutional Neural Network (CNN) model with deep learning techniques, we present a face emotion identification system. The categorization of facial expressions will be utilized as the basis for a face recognition system trained using CNN. The applications are intended to use the OpenCV, Keras, and TensorFlow libraries as the backend. We were discussing the study on the best use of xception architectural models in facial expression recognition systems. Based on the results of these tests, the study obtained an increased accuracy value in training and data testing on an xception architecture model trained for facial expressions using the FER-2013 dataset, resulting in an accuracy value of 66% as well as the value of each average for precision (76%), recall (65%), and F1 score (63%).
Pemilihan Pemasok dan Penentuan Jumlah Optimal Pembelian Bahan Baku di PT. X Andharini Dwi Cahyani; Ari Basuki
Rekayasa Vol 13, No 3: December 2020
Publisher : Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/rekayasa.v13i3.19766

Abstract

Dalam konsep manajemen rantai pasok, kelancaran pemenuhan permintaan konsumen dipengaruhi oleh pemasok. Kinerja pemasok akan mempengaruhi ketepatan pemenuhan kuantitas dan kualitas produk yang dipesan oleh konsumen. PT. X merupakan sebuah gudang beras yang membeli gabah dari berbagai pemasok dan kemudian memproses gabah tersebut menjadi beras. Beras ini kemudian dikemas dan dijual kepada konsumennya. Akan tetapi, proses aliran material ini tidak berjalan lancar, beberapa kali terjadi ketidaksesuaian jumlah dan kualitas barang yang dikirim oleh pemasok, sehingga berpengaruh terhadap jadwal pemenuhan permintaan konsumennya. Tujuan penelitian ini yaitu untuk menilai dan memilih sejumlah pemasok yang terbaik dan menentukan jumlah pesanan yang optimal agar kebutuhan konsumen dapat terpenuhi dengan baik. Terdapat 3 jenis komoditas gabah yang dipasok dari 10 pemasok. Ke-10 pemasok ini yang akan dinilai dengan menggunakan kriteria: harga, kualitas, kemampuan pemasok dalam menyediakan bahan baku, pelayanan dalam bentuk pengiriman. Metode yang digunakan yaitu Simple Additive Weighting (SAW) dan Linier Programming. Hasil penelitian ini yaitu terdapat 6 pemasok yang dinilai memiliki kinerja baik yang disarankan kepada PT. X untuk dijadikan sebagai pensuplai 3 jenis gabah. Dengan menggunakan 6 pemasok ini, PT. X diperkirakan mampu melakukan penghematan biaya pembelian gabah sebesar Rp. 32.124.136,- per bulan.
Spatio-Temporal Annual Changes of Mangrove Vegetation Coverages in Porong Estuary Based on Sentinel-2 Imagery Herlambang Aulia Rachman; Abd Rahman As-Syakur
Rekayasa Vol 16, No 1: April 2023
Publisher : Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/rekayasa.v16i1.18882

Abstract

Mangrove is a typical coastal ecosystem with high productivity and has a number of ecosystem services. However this ecosystem is vulnerable particularly in urban areas due to land use change and illegal logging. Sidoarjo is one of the most developed urban area in the East Java Province, with mangrove ecpsystem scattered along the Porong estuary. This estuary is also the location of mudflow from the famous Lapindo mud disaster since 2006. This study aims to analyze the changes of mangrove coverages around the Porong estuary using satellite imagery data. Fractional Vegetation Coverage (Fv) was used to quantify the changes of mangrove vegetation coverage of Mangrove Forest from 2015 – 2021. The results show that there is a change in mangrove coverages in the area of study. The high change from lo vegetation coverage (LVC) to Full Vegetation Covarege (FCV) as found in the mouth of Porong River. This condition maybe caused by sedimentation process due to mudflow from volcanic disasters. 
Presensi Wireless Otomatis menggunakan Face Recognition Adiputra, Firmansyah; Umam, Faikul
Rekayasa Vol 15, No 3: Desember 2022
Publisher : Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/rekayasa.v15i3.19762

Abstract

Presensi adalah sebuah daftar yang digunakan untuk mencatat kehadiran seseorang serta tingkat kedisplinan dari anggota dalam suatu instansi, institusi atau perusahaan. Sistem yang digunakan dalam presensi juga mengalami banyak perkembangan yakni mulai dari sistem presensi yang memakai kertas, sistem mesin check clock, sistem smart cards (RFID), hingga sistem yang paling terbaru ialah sistem presensi biometrik (fingerprint recognition, retina recognition, dan face recognition). Dalam penelitian ini, sistem yang digunakan pada alat presensi adalah salah satu dari sistem biometrik yaitu sistem face recognition. Hal ini, dikarenakan sistem biometrik face recognition dinilai paling efektif dari pada menggunakan sistem presensi lainnya dan juga untuk meminimalisir kecurangan dalam presensi, seperti titip tanda tangan dan titip kartu. Sebelum proses pengenalan wajah dilakukan, terdapat proses deteksi wajah atau face detection yang akan terlebih dahulu mengindikasikan bahwa dalam gambar tersebut terdapat wajah manusia atau tidak. Untuk melakukan hal tersebut face detection memerlukan sebuah metode, yakni Skin Color Segmentation yang dapat memberikan indikasi secara spesifik pada sebuah gambar atau image, dengan cara mengidentifikasi jumlah pixel yang ada dalam persegi saja dan bukan nilai setiap pixel yang ada pada keseluruhan image. Kemudian hasil dari proses face detection ini, akan diolah untuk proses face recognition, yang mana dalam proses ini juga memerlukan metode yakni Principal Component Analysis (PCA).
Pengaruh Manipulasi Ploidi Terhadap Efektivitas Pertumbuhan dan Hasil Tanaman Labu Kuning (Cucurbita moschene Dutchene) Reza Prakoso Dwi Julianto; I Made Indra Agastya; Wahyu Fikrinda
Rekayasa Vol 16, No 1: April 2023
Publisher : Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/rekayasa.v16i1.11895

Abstract

Pumpkin (Cucurbita moschene Duthene) is plant sources of food that has high nutrition content. Increasing the productivity of pumpkin can be done through programs, which is the ploidy manipulation technique, the technique using a mutagen, namely colchicine. Application of colchicine in the wrong dose and soaking time can be toxic to plants. The research aim to gain recommendations for the right concentration of colchicine immersion to increase the growth and yield of pumpkin plants. Research was done by using a split plot design with subplots with colchicine concentration and the main plots of local Malang pumpkin varieties. The research results that application of colchicine immersion in several local pumpkin varieties showed a significant relationship at fruit quantity parameter. Application of colchicine with 3 dose ppm on local pumpkin variety Malang 1 (P3V1) showed the highest average fruit quantity compared to other treatments, which was 4 pieces. Optimal concentration of colchicine to increase the yield of local pumpkin plants is with 3 dose ppm can be seen from the highest average value on several parameters among others fruit number, fruit weight, and fruit diameter, but not significantly different from the colchicine concentration of 2 ppm and 4 ppm. The colchicine concentration of 2 ppm showed the highest average value of the sex ratio parameter was 25.51%.
Pemodelan Pola Transport Sedimen di Perairan Desa Berakit dan Pengudang Kabupaten Bintan Rahma Sarita; Mario Putra Suhana; Harish Wirayuhanto
Rekayasa Vol 16, No 1: April 2023
Publisher : Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/rekayasa.v16i1.18386

Abstract

Sedimentation and erosion processes can be influenced by hydro-oceanographic factors. These factors include waves, currents, and tides because they interact directly with the coastal/coastal area. Related to these problems, sedimentation and erosion is one thing that needs to be studied. One way that is used in providing information about these that is widely used is to use a hydrodynamic model. Based on this, it can be seen that it is important to conduct research to determine sediment properties such as the type and type of sediment with sediment transportt modeling in Berakit and Pengudang villages. This research was carried out using the MIKE21 Software hydrodynamic modeling for one month in June 2021 using hydrodynamic modeling, the Flow Model FM Sand Transportt module. Sediment transportt observed is bottom sediment or bed load. The research results are shown in 4 conditions, namely towards high tide, highest tide, towards low tide and lowest tide. Sediment transportt at high tide with erosion of -0.10 and sedimentation of 0.25 m/day and at the highest tide shows an erosion value of -0.24 and sedimentation of 0.32 m/day. Sediment transportt towards low tide with erosion of -0.15 and sedimentation of 0.20 m/day and at the lowest ebb erosion occurs with a value of -0.36 and sedimentation of 0.20 m/day.
Optimalisasi Penggunaan Energi Terbarukan untuk Desa Mandiri Energi dan Ramah Lingkungan Nizar Amir; Makhfud Efendy; Sabarudin Akhmad; Fiki Milatul Wahyu; Rafly Firman Surya Putra
Rekayasa Vol 16, No 1: April 2023
Publisher : Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/rekayasa.v16i1.19119

Abstract

The residents of West Waru Village, Pamekasan, are renowned for their high numbers of cows, leading to a steadily increasing amount of cow dung that contaminates the environment. To combat this problem, we must find ways to utilize cow manure. There is a potential solution in the form of biogas generator technology, which can convert cow manure into energy. This research seeks to develop and optimize its design in order to provide renewable electricity for Waru Barat Village, Pamekasan. It involves the use of HOMER software to simulate and determine the optimal design. Technical, economic and environmental indicators are used as the main parameters in this research's output. The cost per kWh of generated energy stands at Rp. 1,076/kWh - a far cheaper alternative than electricity from PLN (Rp. 1,500/kWh) - making it highly beneficial for all stakeholders when constructing renewable energy power plants in rural Indonesia.

Page 37 of 51 | Total Record : 504

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