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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.
Arjuna Subject : -
Articles 25 Documents
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Search results for , issue "Vol 14, No 3: Desember 2021" : 25 Documents clear
Monitoring Perkembangan Anak Usia Balita Berbasis Aplikasi Mobile Android Febriyanti, Nur Laili; Maulidiansyah, Maulidiansyah; Arifin, Zainal
Rekayasa Vol 14, No 3: Desember 2021
Publisher : Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/rekayasa.v14i3.11385

Abstract

Posyandu is a health activity organized by the community for the community, almost all villages have posyandu activities, including the village of Gunggun Lor. Posyandu in Gunggugan Lor in conveying schedule information, child development, and health information using the MCH book or orally when attending the Posyandu, the consultation process from the midwife is also face-to-face, the process has problems when the MCH book is lost and when the midwife or cadre forgets to convey the information needed, therefore an application is needed as an intermediary to convey the information, namely using a mobile (android) based application, with a modern development method, namely RAD (Rapid Application Development) toddler mother
Penguasaan dan Pengembangan Iptek Kemaritiman Guna Mewujudkan Indonesia Sebagai Poros Maritim Dunia Widodo, Widodo; Bandono, Adi
Rekayasa Vol 14, No 3: Desember 2021
Publisher : Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/rekayasa.v14i3.12566

Abstract

Science and technology is always experiencing dynamics in the form of changes and developments. Industrial revolution 4.0. has brought new technology which is always characterized by cyber physical systems such as artificial intelligence, advance robotics, autonomous vehicles, 3d printing, virtual reality, and crypto currency, and others. The impact of the presence of these new technologies brings major and fundamental changes in various fields of life, including the maritime sector. The industrial revolution 4.0., has given rise to the phenomenon of shifting community activities which were initially carried out in the real world, now carried out in cyberspace. Everything is digital and all activities are done online with the help of internet media. In realizing the vision of the five pillars of PMD through the mastery and development of science and technology, several strategies are needed, including: (1) Building a maritime culture, through efforts: (a) the use and application of smart education technology, (b) carry out a cultural revolution or mental revolution, (c) build and expand internet network access infrastructure that is evenly distributed and reaches all regions of Indonesia. (2) Utilization of Maritime Natural Resources, with strategies, including: (a) Increasing the quantity and quality of exploration and management of natural resources classified as potential recoverable resources. (b) Increase the quantity and quality of exploration and management in the field of natural resources which are classified as potential non-recoverable resources, such as large oil and gas, minerals and mining materials. (c) Improving marine tourism management based on marine natural resources. (3) Development of Maritime Infrastructure and Connectivity, through efforts to prioritize the development of sea highways for inter-island domestic connectivity, by developing port infrastructure, and shipping and navigation safety infrastructure. (4) Improving Maritime Diplomacy, through strategies to strengthen diplomacy in the economic sector, diplomacy in the defense sector, and digital diplomacy. (5) Maritime Defense, through increasing the ability of defense equipment to defend the country's sovereignty, the territorial integrity of the Unitary State of the Republic of Indonesia, and the safety of all ethnic groups from all forms of threats.
Influence of Sand Casting Waste as Substitutor of Quartz Sand in Mortar Prasetya, Fandi Angga; Faria, Niswatun; Susanto, Tri Eddy; Firdaus, Rizqi Ni’amul; Zamzami, Yaski Achmad
Rekayasa Vol 14, No 3: Desember 2021
Publisher : Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/rekayasa.v14i3.12451

Abstract

Sand casting waste has the potential to replace quartz sand in mortar manufacture because it contains high silica. This study uses sand casting waste from the steel industry in Gresik, Indonesia to observe how it affects the quality of the mortar. Initial characterization were carried out to determine the properties of the material, including; magnetic test which results are not attracted by magnets, moisture content test with a value of 0.328%, XRD test to determine the crystallinity content which results contain 99.52% Silica Quartz, and XRF test to determine the content of the compound in which results are 81.25% Silica dominant. Then observations were made by making mortar with the replacement of quartz sand by sand casting with variations of 0% wt, 25% wt, 50% wt, and 100% wt and then tested its compressive strength at 3 days, 7 days, and 28 days. Based on the research that has been done, the optimum result using sand casting is at 25% wt with a compressive strength of 251.15 kgf/cm2 at 28 days of age which is higher than the standard.
Perbandingan Metode Roberts’ Filter, Segmentasi dan Band Ratio Pada Citra Landsat 8 untuk Analisis Garis Pantai Prayogo, Luhur Moekti; Basith, Abdul
Rekayasa Vol 14, No 3: Desember 2021
Publisher : Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/rekayasa.v14i3.10300

Abstract

Computerization has an essential role in the field of remote sensing. Various methods for automatic coastline analysis continue to develop. This study aims to determine the performance of three methods, namely Roberts' Filter, Segmentation, and Band Ratio on Landsat 8 imagery, in producing land edges that are directly adjacent to the sea area (coastline). This study shows that the non-fusion image, the resulting edge, is less sharp than the fused image in the Roberts' filter method. The use of a 2x2 matrix on the Roberts' filter, the range of values from 0.52 to 0.56 in the segmentation method, and the Green Band Ratio - Near-Infrared produce various accuracy. The best method is produced by Band Ratio, where the edge detection results are close to the image's actual conditions. Meanwhile, unsatisfactory results are produced by the segmentation method.
Penerapan Data Mining Untuk Analisa Pola Pembelian Produk Menggunakan Algoritma Frequent Pattern – Growth Soleh, Paisal; Tholib, Abu; Hidayat, M. Noer Fadli
Rekayasa Vol 14, No 3: Desember 2021
Publisher : Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/rekayasa.v14i3.11365

Abstract

An important aspect of a sales business is the pattern of product purchases, which is one of the supporting factors for increasing revenue, as well as customer arrivals. To find out all aspects of a good buying model, it is measured based on products that customers often buy, products purchased at the same time, usage based on these products, and the relationship between each product. One place of business that seeks to develop a business strategy by using a product purchase pattern is the Avindo Motor Shop. Competition in the business world requires Avindo Motor to improve the quality of sales using a method or method so that what goods are usually purchased by customers can be known. In a day Avindo Motor is not deserted by buyers to make transactions, the resulting transaction data can reach hundreds so that every day the purchase of data. The stages of this research are the literature study stage, data collection stage, data management with data mining, results analysis stage, and presentation stage. From the discussion that the researcher has done, it can be concluded that to determine the pattern of purchasing products using Frequent Pattern Growth has been successfully carried out, and an association rule has been determined at the Avindo Motor store, such as if you buy nuts you will buy clips, if you buy inner tubes you will buy nuts and if you buy an inner tube, you will buy a clip.
Peran Intelijen Maritim Terhadap Keamanan Laut di Selat Sunda Hartawan, Mohammad Zaki; Pramono, Agung; Yudho, Fafan
Rekayasa Vol 14, No 3: Desember 2021
Publisher : Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/rekayasa.v14i3.11499

Abstract

The Sunda Strait is one of the shipping lanes that is part of ALKI I which is traversed by cargo ships, tankers, tugboats, fishing vessels and military ships as well as ships using the Sunda Strait to pass from the Indian Ocean to the Java Sea or continue to the Pacific Ocean or vice versa. The tasks and roles of maritime intelligence are an integral part of the overall intelligence activities and operations of the Indonesian Navy, and have a role in providing input and advice on the development of weather conditions, terrain and enemy/future enemies as well as maritime aspects to the leadership in determining policies and decisions on operational aspects. and other interests through a series of activities (functions) of investigation, security and fundraising. The method used in this research is quantitative with a questionnaire using a Likert scale and distributed to 60 people who serve in the ranks of Lantamal III which is then analyzed using Linear Regression Analysis. From the results of the analysis obtained a regression model Y = 4.621 + 0.901 X and it is known that Maritime Intelligence has an influence on Marine Security in the Sunda Strait that is equal to 89,51 %.  
Sinergitas Kementerian dan Lembaga dalam Mengantisipasi Konflik di Laut China Selatan Setiowati, Renny; Jati, Sundring Pantja; Widodo, Puji; Suharjo, Bambang
Rekayasa Vol 14, No 3: Desember 2021
Publisher : Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/rekayasa.v14i3.12577

Abstract

The South China Sea is one of the epicenters of conflict in the 21st century. The South China Sea area includes waters and land located in the archipelago of two large islands, namely the Spratlys and Paracels, as well as the banks of the Macclesfield and Scarborough Reef Rivers which stretch from Singapore, from the Malacca Strait to the Taiwan Strait. As this vast territory has often been subjected to successive control by neighboring rulers, several countries, such as the People's Republic of China (PRC), Taiwan, Vietnam, the Philippines, and Brunei Darussalam, have engaged in confrontational attempts to claim, over large parts of the entire territory. . While on the one hand Indonesia supports the prospect of peace in the South China Sea for economic development and domestic stability, Indonesian policymakers are concerned about China's interpretation of its South China Sea claims, which also includes reserves of natural gas and other natural resources. inside it. On the other hand, Indonesia is committed to defending the rights of the archipelagic state as stated in UNCLOS.
Keterkaitan Kualitas Air dengan Keanekaragaman Zooplankton di Sungai Barito Kecamatan Marabahan Kabupaten Barito Kuala Sofarini, Dini; Aminah, Siti; Nur Hidayah, Rina; Septa Hanifa, Marissa
Rekayasa Vol 14, No 3: Desember 2021
Publisher : Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/rekayasa.v14i3.12340

Abstract

The fish diversity in Barito River is determined by diversity of zooplankton, in relation to the grazing food chain’s concept. One of the problems that occur is the quality of several key parameters in waters are no longer suitable for zooplankton and fish life. The purpose of this research were: (a) analyze the key parameters of water quality at the sampling location (b) determine the relationship between key water quality parameters and zooplankton diversity at the Barito River sampling location. The method used was a purposive sampling survey method and the shanon-wiener method. The results showed that the key parameters that met the PP No. 22/2021 Water Quality Standard for Class 2 River Water Quality.
Adsorpsi Logam Kadmium dalam Limbah Cair Buatan Menggunakan Biosorben Kulit Pisang Mas (Musa acuminate colla) Arifiyana, Djamilah; Wardani, Ratih Kusuma
Rekayasa Vol 14, No 3: Desember 2021
Publisher : Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/rekayasa.v14i3.12391

Abstract

Mas banana (Musa acuminata Colla) peel is a type of household waste as well as agricultural waste whose utilization still needs to be improved. In addition, among various types of heavy metals that are dangerous as contaminants in the environment, cadmium metal is a metal that is very dangerous to health even in very small amounts. Therefore, this study aims to not only utilize the waste of Mas banana peel (Musa acuminata Colla) as a biosorbent, but also to determine the optimum conditions needed to reduce cadmium metal which involves several test parameters, namely stirring time, pH and mass of biosorbent. Variations of stirring time used include 10, 20, 30, 35, and 45 minutes; variations in pH used include 1, 2, 3, 4, and 5, while variations in the mass of biosorbent used include 0.5; 1; 1.5; 2 and 2.5 grams. The results showed that the optimum conditions were obtained at a mixing time of 35 minutes, pH 5, and a mass of 2 grams of biosorbent with a reduction percentage value of 78.45%. This percentage indicates that Mas banana peel can be used as a natural adsorbent for cadmium metal. In addition, the results of the FT-IR analysis of the Mas banana peel biosorbent showed that Mas banana peel has a functional group that plays a role in the heavy metal adsorption process.
Perancangan Sistem Kontrol Heater Mesin Grinder Coffee Brewer Otomatis Menggunakan Metode Kontrol PI (Proportional Integral) Khotib, Muhammad; Basri, Muhammad Hasan; Surya, Disma Adi; Iskawanto, Hilman Saraviyan
Rekayasa Vol 14, No 3: Desember 2021
Publisher : Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/rekayasa.v14i3.11381

Abstract

Coffee drink is one of the drinks favored by millennial people, where they relax and gather together. In an era of rapidly developing technology, many millennials are busy in the world of work who are required to do it quickly and on time, so they are very busy and most of them take short breaks to enjoy a cup of coffee. Therefore, to help facilitate the serving of coffee, an automatic coffee brewer heater control system was designed using PI control. Where the control is to control the hot temperature that will be made coffee using a heater. The results from testing the entire PTC sensor temperature set to 40 oC, the maximum temperature produced is 43 oC. And for the overall test of the heating temperature set at 35 oC, the time it takes to heat the water is 2.17 minutes, then after that the coffee will automatically come out of the heatear. For the temperature data carried out in this experiment, it was carried out from 30 oC to 90 oC with each experiment carried out by a heat transfer of 5 oC, to find out how long it took to heat the water in the heatear, so that it was suitable for coffee consumption by producing a glass of hot coffee that was ready to drink.

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