cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
Alfian Qomaruddin
Contact Email
alfian@trunojoyo.ac.id
Phone
-
Journal Mail Official
rekayasa@trunojoyo.ac.id
Editorial Address
Universitas Trunojoyo Madura Jl. Raya Telang - Kamal, Bangkalan Kode Pos 69162
Location
Kab. bangkalan,
Jawa timur
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 517 Documents
 31   32   33   34   35 
Inventory of Pests and Diseases Intensity on 10 Bambara Groundnut (Vigna subterranea (L.) Verdc.) Lines in The Dryland of Madura, Indonesia, during The Dry Season Fatimah, Siti; Muafalah, Siti; Nurholis, Nurholis; Djunaedy, Achmad
Rekayasa Vol 15, No 1: April 2022
Publisher : Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/rekayasa.v15i1.13988

Abstract

Landraces breeding scheme of bambara groundnut from various regions of Indonesia since 2012 provides several potential lines which are uniform, high yielding and drought-tolerant. Evaluation of resistance to pests and diseases is aimed to select potential lines which are resistant to pests and diseases and potential for development in Madura dry land during the dry season. The present study used descriptive method through field observation technique on 10 selected potential lines of Bambara groundnut. The results showed that there were 5 (five) types of pests and 4 types of diseases found in bambara groundnut crops planted during the dry season in Bangkalan Regency of Madura. The pests attacking more than 25% per plot were aphids, ladybugs and grasshoppers. A symptom of pathogen attacking more than 25% per plot were Bean common mosaic virus and soybean common mosaic virus. The GSG 1.1.1 potential line had the lowest pest attack and the BBL 2.1.1 potential line had the lowest disease incidence.
Rancang Bangun Drone Solar Cell untuk Pengintaian dalam Mendukung Operasi Keamanan Laut Hartanto, Endin Tri; Sulistyo, Hari; Adi, Anang Prasetiya
Rekayasa Vol 15, No 1: April 2022
Publisher : Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/rekayasa.v15i1.14101

Abstract

The development of defense equipment and military technology in the TNI-AL is carried out in order to support the strengthening of the National Defense Strategic Industry (Instranas). Several steps have been taken in the development of defense equipment and military technology in the TNI-AL, namely by carrying out research and development of defense equipment. One of them is conducting research on unmanned aerial vehicles (UAV). The use and development of unmanned aircraft was initially carried out by the military to carry out military and intelligence operations. To carry out reconnaissance functions to support maritime security operations, requiring long endurance, a Solar Cell Drone is designed by utilizing solar energy. Based on the results of the design and testing that have been carried out, the drone is able to fly as long as it gets a supply of solar energy, which is throughout the day with the main load on the propulsion system. The thrust value obtained is 1266.8 watts or the equivalent of 3,998 kg of thrust which is able to fly a drone with a weight of 6.7 kg. The control system developed uses the Pixhawk 4 flight controller and remote control, the data communication system uses Telemetry NRF24L01 2.4 GHz. The results of this design and test can be a pioneer in developing Solar Cell Drones for the independence of the Indonesian Navy's defense equipment in the future.
Pengaruh Kualitas Layanan Terhadap Kepuasan Pelanggan Perusahaan Daerah Air Minum (PDAM) Sumber Pocong Kabupaten Bangkalan Prabowo, M. Arif; Faridz, Raden; Burhan, Burhan
Rekayasa Vol 15, No 1: April 2022
Publisher : Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/rekayasa.v15i1.13539

Abstract

Clean water is a vital community need that needs special attention. The government needs to provide it adequately as a form of the mandate of the 1945 Constitution. Perusahaan Daerah Air Minum (PDAM), as a representation of the government, becomes an institution that takes on a role in meeting the needs of clean water. The increasing demand for clean water with a rising population needs to be balanced with good service. This research uses a case study in PDAM Sumber Pocong Bangkalan. PDAM Sumber Pocong serves various community needs, including registration, checking water bills, to payment. The assessment of service quality at PDAM Sumber Pocong is expected to be an input to improve the company's performance in the context of service. Customer satisfaction is a measure of service quality performance. This study aims to measure service quality and customer satisfaction of PDAM Sumber Pocong Bangkalan clean water and determine the effect of service quality and customer satisfaction. Three indicators of service quality (reliability, assurance, and facilities) and four customer satisfaction indicators (product quality, price or cost, service, and emotion) proved to be appropriate and relevant measures. Meanwhile, from the path analysis test, the service quality variable has a significant effect on the customer satisfaction variable. 
Rancangan Strategi Menangani Ancaman Perang Hybrida Melalui Patroli Maritim di Kawasan Laut China Selatan Syafruddin, Hadi; Judijanto, Judijanto
Rekayasa Vol 15, No 1: April 2022
Publisher : Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/rekayasa.v15i1.14123

Abstract

The ever-changing dynamics in the South China Sea are making international relations even hotter, especially Western countries that feel threatened by China's claims to the South China Sea region with its Nine Dash Line. The South China Sea claimed by China is the North Natuna Sea which is included in the territory of the Republic of Indonesia. Lately the disputed countries use a new strategy of hybrid war that has been waged by the Chinese state in making a coercion by demonstrating capability in terms of strength. This problem makes Indonesia whose territory is affected in the North Natuna Sea must quickly anticipate in response to hybrid warfare by firmly declaring itself as a non-claimant states participating in the arena of dispute in an effort to claimant-states (state parties) in seizing rights in the South China Sea creating an unconventional war called hybrid warfare. One strategy using the SWOT method can conclude that in a prominent variable with opportunities where variables of cooperation with foreign countries greatly help realize the game, security and stability of the region in the Natuna Sea. The strategy used by increasing the variable strength (Strong) and opportunity (Opportunity) so as to increase the security and stability of the NKRI region in the Natuna Sea.
Review Optimalisasi Penggunaan Produk Industri Strategis Nasional untuk Mendukung Kesiapan Alutsista TNI AL
Rekayasa Vol 15, No 1: April 2022
Publisher : Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/rekayasa.v15i1.11576

Abstract

The implementation of the main tasks of the Indonesian Navy must be supported by the strength of the defense doctrine, human resources, and the main tools of the Indonesian Navy's reliable weapon system (alutsista). Observing the current condition of the Indonesian Navy, it is still far from the conditions that are expected to be able to carry out its main tasks, especially with the state of readiness of the defense equipment system. The current condition of the TNI AL's strength when compared to the strength of neighboring countries in the ASEAN region is still lagging behind. To be able to improve the readiness of the Indonesian Navy's defense equipment, including optimizing the use of national strategic industrial products to support the readiness of the Indonesian Navy's defense equipment, which has a fairly reliable ability to produce, assist maintenance and repair of defense equipment. The purpose of this paper is to find out and analyze the implementation of the use of national strategic industrial products, the implications for the support of the Indonesian Navy's defense equipment and how the solutions are to support the readiness of the Indonesian Navy's defense equipment in order to increase national security. This writing uses a normative juridical approach through assessing the capabilities of national strategic industries, fulfilling the needs of the Navy's defense equipment, human resources capabilities in technology transfer, budget support and optimizing the use of national strategic industrial products to increase national resilience. The conclusion is that the use of national strategic industrial products has a close relationship in terms of supporting the readiness of the Navy's defense equipment and increasing national security.
Analysis of The Ratio Catalys Promoters BaO/CaO to Methyl Ester Content and Yield in Biodiesel Using Electrocatalytic Reactor
Rekayasa Vol 15, No 1: April 2022
Publisher : Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/rekayasa.v15i1.13761

Abstract

The efficiency of biodiesel production from vegetable oils needs to be developed. The process of transesterification using heterogeneous catalysts has been widely studied to replace the role of homogeneous catalysts. The use of BaO promoters into metal oxides increases the activity of heterogeneous catalysts in transesterification reactions. This study was conducted to provide information about the effect of BaO concentrations that are filtered into calcium oxide (CaO) on the transesterification reaction of tofu pulp oil into methyl ester using electrocatalytic methods. The study was conducted at room temperature with a voltage of 18.5 Volts and a reaction time of 120 minutes. Methanol ratio: tofu oil is used at 10:1 with Tetra Hydro Furan (THF) as a co-solvent. The electrocatalytic process is carried out using graphite electrodes. The research variables are the concentration of BaO promoters used at 2%, 4%, and 8%. The parameter of the test is methyl ester content obtained from the results of transesterification reactions with chromatography gas analysis (GC-MS). In this study, the BaO/CaO catalyst was impregnated by wet method and calcined at 450oC for 180 minutes. From the experiments conducted the highest methyl ester yield was obtained in bao / cao catalyst 2% with a yield of 99.99% and biodiesel yield of 94%.
Analisis Stabilitas Artificial Reefs Tipe Hexagonal Muhammad Rifqi Hanif; Haryo Dwito Armono
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.v15i2.15246

Abstract

In solving the problem of abrasion and also protecting marine ecosystems, it is necessary to come up with an idea, namely a wave energy retaining structure that is also capable of being a habitat for marine biota. Therefore, in this study, artificial coral reefs were tested which are considered capable to solve these problems, plus those which at the same time rehabilitate damaged coral reef ecosystems. The artificial reefs model in this test is a hexagonal type with one layer arrangement. To get the success value (KD) of artificial reefs, it is seen from the percentage of damage caused by the influence of height and wave period. Then the KD value was calculated using the Hudson formula so that it was found that the hexagonal type artificial reefs had a KD value = 1.2.
Pemodelan Sistem Dinamik Eco-Drainage di Wilayah Tanah Basah (Studi Kasus Kawasan Kelapa Gading DKI Jakarta) Rahmawati Fitria; Henita Rahmayanti; Bagus Sumargo
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.v15i2.15057

Abstract

An Ecological drainage becomes an application in this development project in the Kelapa Gading area. The drainage concept that is applied is a drainage system in which rainwater that falls on road surface runoff will flow directly into the water infiltration system and directly fill the ground surface water. Geologically, it can be seen that North Jakarta is an area with a fairly high ground water level (MAT), and has an average MAT elevation of 2 - 2.5 m. This study intends to determine the ability of this ecodrainage to reduce runoff/floods that often occur in areas with a fairly high MAL. What direct benefits can be felt in the use of ecodrainage in these flood-prone areas, thus making the basic reason for applying this ecodrainage. This study uses a dynamic systems approach. In the preparation of the dynamic system model, Powersim Studio Version 10 software will be assisted. The simulation results show that an increase in rainfall every year will provide an increasing flood potential. By using eco-drainage, it is felt that it is not optimal enough to reduce runoff in areas that have high MAT levels. However, this ecodrainage still provides broad sustainability benefits. The quantity of groundwater will slowly be filled up to the aquier layer through this ecodrainage. This step is considered to be able to help prevent the aquifer layer from being exposed and have an impact on the rate of land subsidence so that the potential for flooding will decrease.
Pewarisan Karakter Kuantitatif Persilangan Tanaman Melon Badriyah Badriyah; Achmad Amzeri
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.v15i2.15107

Abstract

One of the efforts to solve the problem of limited quality melon seeds is to assemble melon varieties with distinctive fruit characters in terms of shape, taste, and color of the flesh. In general, farmers choose meon seeds that have a sweet taste, flesh color, large fruit size, and have a long shelf life. Analysis of quantitative character inheritance is very important in plant breeding programs. This analysis is used to obtain genetic information consisting of the number of genes controlling the character, gene action, genetic diversity, heritability and other genetic information. This study aims to study the inheritance pattern of several quantitative characters in melon crosses. The research design was a randomized block design with eight genotypes as treatment. The results showed that there was a maternal effect on the two crosses of melon plants G1 ((PK-669 x D-612) and G3 ((PK-361 x PK-165) on the characters of fruit diameter, fruit length, fruit weight, and leaf area. Heritability values in a broad sense on all parameters ranged from 0.95-1.00.
Strategi Pemilihan Pesawat Angkut Militer Produksi PT. Dirgantara Indonesia Untuk Mendukung Industri Pertahanan Dalam Negeri Joan Ferdiyanto; I Made Wira Hadi Arsanta; Sadimin Sadimin
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.v15i2.14152

Abstract

Indonesian Navy flights as an integral part of the SSAT have several functions, one of which is to provide rapid logistical support. Based on considerations of function and mobilization capabilities, medium-sized military transport aircraft are the main choice in providing rapid logistical support. The advantages of this function and mobility also make military transport aircraft capable of carrying out additional tasks assigned to their guiding squadron, namely the 600 Air Wing Squadron. The additional tasks are Search and Rescue (SAR), Air Medical Evacuation (EMU) and VIP Flights. Currently, there are 11 elements of the NC212-200 aircraft owned by Puspenerbal, with a description of 7 active elements, 4 disposal processes. In 2017, Puspenerbal received the Beechcraft King Air 350i light transport aircraft, but several operational requirements were not met to carry out the main function as an element of fast logistics support provider, so this element was prioritized to carry out additional functions such as VIP flights. The results of the analysis using the Analytic Hierarchy Process (AHP) method with the help of the Expert Choice 11 Application show the weight of the criteria for selecting medium military transport aircraft, namely Navigation and Communication Equipment 46.4%, Short Take-off and Landing (STOL) Ability 31.7 %, Transportability 15.3%, and Flying Ability 6.7% with an Inconsistency value of 0.07. This shows that the calculation of the correspondent is still within the inconsistency threshold, which cannot be more than 0.1. While the order of priority for the alternative types of medium military transport aircraft from high to low is the CN 295 type 80.5% and the Alenia C27J Spartan type 19.5%. Based on this value, it can be seen that the CN 295 Medium Military Transport Aircraft is the right alternative to be chosen.

Page 33 of 52 | Total Record : 517

 31   32   33   34   35 

Filter by Year

2008 2025


Reset
Filter By Issues
All Issue Vol 18, No 3: Desember, 2025 Vol 18, No 2: Agustus, 2025 Vol 18, No 1: April 2025 Vol 17, No 3: Desember, 2024 Vol 17, No 2: Agustus, 2024 Vol 17, No 1: April, 2024 Vol 16, No 3: Desember 2023 Vol 16, No 2: Agustus 2023 Vol 16, No 1: April 2023 Vol 15, No 3: Desember 2022 Vol 15, No 2: Agustus 2022 Vol 15, No 1: April 2022 Vol 14, No 3: Desember 2021 Vol 14, No 2: Agustus 2021 Vol 14, No 1: April 2021 Vol 13, No 3: December 2020 Vol 13, No 2: August 2020 Vol 13, No 1: April 2020 Vol 12, No 2: Oktober 2019 Vol 12, No 1: April 2019 Vol 11, No 2: Oktober 2018 Vol 11, No 1: April 2018 Vol 10, No 2: Oktober 2017 Vol 10, No 1: April 2017 Vol 9, No 2: Oktober 2016 Vol 9, No 1: April 2016 Vol 8, No 2: Oktober 2015 Vol 8, No 1: April 2015 Vol 7, No 1: April 2014 Vol 6, No 2: Oktober 2013 Vol 6, No 1: April 2013 Vol 5, No 2: Oktober 2012 Vol 5, No 1: April 2012 Vol 4, No 2: Oktober 2011 Vol 4, No 1: April 2011 Vol 3, No 2: Oktober 2010 Vol 3, No 1: April 2010 Vol 2, No 2: Oktober 2009 Vol 2, No 1: April 2009 Vol 1, No 2: Oktober 2008 Vol 1, No 1: April 2008 More Issue