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All Journal ASRO JOURNAL - STTAL STTAL POSTGRADUATE - INTERNATIONAL CONFERENCE

Ahmadi Ahmadi

STTAL

Author-ID : 3966787

Computer Science & IT Decision Sciences, Operations Research & Management Education Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Mechanical Engineering Other

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DESIGN OF ACADEMIC INFORMATION SYSTEM BASED ON BOT TELEGRAM IN SMART CAMPUS CONCEPT Ahmadi Ahmadi; Dedi Setiawan; Suprayitno Suprayitno; Priyadi Hartoko
JOURNAL ASRO Vol 11 No 03 (2020): International Journal of ASRO
Publisher : Indonesian Naval Technology College - Sekolah Tinggi Teknologi Angkatan Laut - STTAL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37875/asro.v11i03.310

The goal for many education institutions is the existence of the Smart Campus concept. Smart Campus is the concept of a smart campus to provide maximum service to the entire academic community by monitoring and managing existing resources effectively and efficiently. Smart Campus can also provide appropriate information to students or campus institutions in every activity, or even in unexpected events. In this research, it is proposed to maximize the academic information system which is integrated with the Telegram messenger application. This Telegram application can be obtained for free, lightweight and multiplatform by having a fairly complete and more developed Bot API. Students get real time notifications and can chat / communicate with the Telegram Bot which is designed to provide all the information on STTAL. The admin can upload lecture material into the Telegram Bot then students can download it from the Telegram Bot. There are 11 commands designed in this study as a prototype. This research was tested by trying all the commands provided. This Bot Telegram application is very helpful for study program staff and lecturers to convey information to students especially using this application is quite easy. Keywords: Smart Campus, Bot Telegram, and Information Media

THE WARSHIP ASSIGNMENT SCHEDULE USING INTEGER PROGRAMMING MODEL Ahmadi Ahmadi; Benny Sukandari; Agus Mahrowi
JOURNAL ASRO Vol 10 No 3 (2019): International Journal of ASRO
Publisher : Indonesian Naval Technology College - Sekolah Tinggi Teknologi Angkatan Laut - STTAL

Scheduling is an assignment activity that deals with constraints. A number of events can occur in a period of time and location so that objective functions as close as possible can be fulfilled. In the hierarchy of decision making, scheduling is the last step before the start of an operation. Scheduling warship assignments in Kolinlamil are an interesting topic to discuss and find solutions to using mathematical methods. The process of the Kolinlamil warship assignment schedule was carried out to produce an annual shipbuilding schedule. This process not only requires fast follow-up, but also requires systematic and rigorous steps. Where the assignment schedule is a fairly complex combinatorial problem. While making the assignment schedule that is applied at this time is considered less accurate because it calculates the conventional method. The process of warship assignment schedule in this study using the Integer Programming model aims to obtain alternative scheduling operations. The schedule observed was 13 warships in carrying out N operations for 1 year (52 weeks). This research begins with determining the decision variables and limitations that existing constraints. Hard constraints include: maintenance schedule, time and duration of each task, warship class assigned to the task and the number of executing warships per task. While soft constraints are how long the warship performs its tasks in a row. The mathematical formulation of the Integer Programming model created consists of three indicator, one decision variables, two measuring parameters and five constraint functions. Furthermore, determining the best scheduling alternatives is completed using the Microsoft Exel Solver computing program.Keywords: Scheduling, Integer Programming, Solver.

APLIKASI FAILURE MODE EFFECT AND CRITICALITY ANALYSIS (FMECA) DALAM PENENTUAN INTERVAL WAKTU PENGGANTIAN KOMPONEN KRITIS RADAR JRC JMA 5310 PADA KRI SATUAN KAPAL PATROLI KOARMATIM Ahmadi Ahmadi; Udisubakti Ciptomulyono; Endin Tri Hartanto
JOURNAL ASRO Vol 6 (2016): Jurnal Analisis Sistem & Riset Operasi
Publisher : Indonesian Naval Technology College - Sekolah Tinggi Teknologi Angkatan Laut - STTAL

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (776.804 KB)

Penggunaan radar navigasi di KRI, khusus nya di Satuan Kapal Patroli Koarmatim sangat vital sebagai alat indera jarak jauh dalam bernavigasi. Penggunaannya mutlak harus ada pada saat KRI melaksanakan operasi, sehingga kondisi kesiapan radar navigasi akan sangat mempengaruhi pelaksanaan tugas operasi yang diemban oleh Unsur-Unsur tersebut. Diperlukan manajemen pemeliharaan yang baik dan terencana untuk memperbaiki atau meniadakan kerusakan agar kinerja sistem tidak menurun. Failure Mode Effect and Criticality Analysis (FMECA) digunakan sebagai sebuah metodologi untuk mengidentifikasi dan menganalisis semua mode kegagalan potensial dari berbagai bagian sistem, efek kegagalan tersebut terhadap sistem, bagaimana menghindari kegagalan dan atau mengurangi dampak dari kegagalan pada sistem. Pada tulisan ini diusulkan model FMECA dalam menentukan komponen kritis Radar Navigasi JRC JMA 5310. Berdasarkan model FMECA tersebut didapat Risk Priority Number (RPN) yang dijadikan nilai acuan dalam penentuan komponen kritis. Nilai RPN setiap komponen yang didapat dianalisa dengan Risk Matrix, dari 27 (dua puluh tujuh) komponen yang telah diidentifikasi, didapat 7 (tujuh) komponen yang dianggap kritis, yaitu Modulator, Power Supply Scanner, Dioda Limiter, Magnetron, Receiver, Motor, Circulator. Komponen Modulator memiliki nilai RPN tertinggi dengan nilai 24180 dan komponen Plotter Control Circuit memiliki nilai RPN terendah dengan nilai 3289. Penentuan interval waktu penggantian komponen kritis yang telah didapat menggunakan pendekatan Reliability dan Cost Benefit Ratio (CBR). Didapatkan hasil bahwa komponen Dioda Limiter memiliki waktu penggantian tercepat, yaitu 152 hari. Sedangkan komponen dengan waktu penggantian terlama, yaitu 458 hari adalah komponen Motor dan Circulator. Di dapat pula nilai CBR untuk semua komponen kritis kurang dari 1 (CBR <1) menunjukkan biaya penggantian yang direkomendasikan sudah efisien. Komponen Dioda Limiter memiliki nilai CBR paling efisien, yaitu 0,57572. Dari analisa sensitivitas diperoleh variabel Reliability R(t) sangat berpengaruh terhadap perubahan penentuan interval waktu penggantian komponen kritis, dimana didalamnya terdapat parameter β (slope), parameter Ƴ (location), dan parameter Ƞ (scale). Parameter β lebih berpengaruh terhadap perubahan nilai Reliability R(t).

SELECTION OF ALTERNATIVE ENERGY SOURCES INDONESIAN WARSHIP PATROL CRAFT 36 CLASS USING LIFE CYCLE COST (LCC) AND TOPSIS (TECHNIQUE FOR ORDER PREFERENCE BY SIMILARITY TO IDEAL SOLUTION) Ahmadi Ahmadi; Haryanto Wibowo; Okol S Suharyo
JOURNAL ASRO Vol 9 No 1 (2018): International Journal of ASRO
Publisher : Indonesian Naval Technology College - Sekolah Tinggi Teknologi Angkatan Laut - STTAL

ABSTRACT Indonesia has abundant natural resources of oil and gas energy. Domestic fuel supply is not entirely fulfilled by domestic oil refineries, almost 20% -30% of domestic oil demand must be imported from abroad. This has an impact on the Navy. Steps to address this problem through switching to the use of alternative energy fuels for the Indonesian warship class Patrol Craft 36. The selection of appropriate alternatives requires analysis of information and identification of alternative fuel requirements to be selected. The approach in this study uses Life Cycle Cost method to see the life cycle cost of alternative and combined TOPSIS (Technique For Order Preference By Similarity To Ideal Solution) approach to other than cost factor, and Benefit Cost Ratio. The result of data processing of alternative energy sources selected is gas, CNG (Compressed Natural Gas) with the value of Benefit Cost Ratio 53,7051 Life Cycle Cost IDR 14,168,302,864. Keywords: Alternative Energy, Life Cycle Cost, TOPSIS.

TIME SCHEDULING AND COST OF THE INDONESIAN NAVY SHIP DEVELOPMENT PROJECT USING NETWORK DIAGRAM AND EARNED VALUE METHOD (EVM) (CASE STUDY OF FAST MISSILE BOAT DEVELOPMENT) Ahmadi Ahmadi; Suparno Suparno; Okol S Suharyo; Arica Dwi Susanto
JOURNAL ASRO Vol 9 No 2 (2018): International Journal of ASRO
Publisher : Indonesian Naval Technology College - Sekolah Tinggi Teknologi Angkatan Laut - STTAL

Missile Boat is one of Indonesian Navy Warship (KCR-60) which has a length of 60 meters and made domestically by Indonesian people at the PT. X in Surabaya. Time delay and cost overruns are the problems in the Missile Boat construction project (KCR-60). The purpose of this research was to schedule the time and cost of the project so that it can be completed on time and there is no swelling of costs for the implementation of the construction of the Missile Boats (KCR-60). The scheduling method used in this study was Precedence Diagram Method (PDM) on Network Diagram and Earned Value Method (EVM). Precedence Diagram Method (PDM) was used for scheduling the project time and showing the critical trajectory of project activities along with the acceleration time (Crashing Project) while Earned Value Method (EVM) was used to determine the costs and time performance and the factors that cause delays or progress of the project. The results showed that the project schedule had 13 activities that had a zero slack or critical activities which were in activities 1, 2, 3, 4, 5, 6, 16, 18, 21, 23, 26, 27, 28. There acceleration of time (Crashing Project) by adding hours of work or overtime for 1 hour every day to 21 activities (1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19) will accelerate and reduce the duration of project completion, which was originally 414 days from the completion of the actual work of implementation to 363 days, thus the difference of effectiveness was 51 days (more effective). Meanwhile, for cost efficiency, based on the analysis of the real cost of project implementation, the amount of Rp. 20.407,094,998, - became Rp. 18,410,738,982, thus it became more efficient by Rp. 2,470,548,998, -

PRIORITY DETERMINATION OF SUBMARINE TYPE AS DEFENSE OF ARCHIPELAGIC WAR WITH FUZZY AHP METHOD AND BCR ANALYSIS Dani Hutabarat; Udisubakti Cipto Mulyono; Ahmadi Ahmadi; Priyadi Hartoko
JOURNAL ASRO Vol 12 No 01 (2021): International Journal of ASRO
Publisher : Indonesian Naval Technology College - Sekolah Tinggi Teknologi Angkatan Laut - STTAL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37875/asro.v12i01.381

This thesis describes the application of the Fuzzy Analytical Hierarchy Process (Fuzzy AHP) approach and Benefit Cost Ratio (BCR) analysis in submarine selection. Submarines as Main Defenses System which are highly strategic in their procurement are directed at realizing a deterrence strategy and a strategy of balancing with state actors that have the potential to threaten the sovereignty of the Indonesian state. Apart from threats, the procurement of submarines also considers Indonesia's geographic constellation and the government's wishes, such as the interest of the minister of defense during working visits to countries that offer their submarines. The first step in procurement is to make an analysis in terms of selecting submarine alternatives, both analysis of information and identification of various important and interrelated requirements regarding data from submarine alternatives that will be selected later. Uncertainty from the government is a fuzzy'nes decision, so this condition can be resolved with the Fuzzy AHP approach and strengthened by BCR analysis, so that the results can provide a higher contribution. The results obtained from the Fuzzy AHP method are the priority order of selecting alternative submarines, namely Y-Class (0.398), W-Class (0.220), X-Class (0.191) and Z-Class (0.191). Where the results of the importance of the main criteria are sequential starting from the Strategic Requirement (Strareq) criteria of 0.409, Operation Requirement (Opsreq) of 0.318 and Technical Requirement (Techreq) of 0.273. Meanwhile, based on the BCR analysis, the Y-Class submarine was also selected with a BCR value of 1.512232936. Keywords: Fuzzy AHP method, BCR Analysis, Submarine Selection.

PATH ANALYSIS BETWEEN CONSTRUCTS OF TECHNOLOGY ACCEPTANCE MODEL (TAM) (A CASE STUDY ON RECEIPT OF VIRTUAL ARMS SOLUTION FTS D - 423 IN INDONESIAN EASTERN FLEET TRAINING COMMAND) Ikhwan Syahtaria; Ahmadi Ahmadi; Bambang Suharjo; Pius Herdasa Krisna Murti
JOURNAL ASRO Vol 11 No 1 (2020): International Journal of ASRO
Publisher : Indonesian Naval Technology College - Sekolah Tinggi Teknologi Angkatan Laut - STTAL

Indonesian Eastern Fleet Training Command currently has the facilities to train professional soldiers in the shooting.A simulator facility in the form of computer-based clinic shooting is called Virtual Arms Solution FTS D-423 (VAS).Need to analyse the relationship between perceived ease of use and usefulness of VAS in order to determine thelevel of acceptance. Both these factors are modelled by the Technology Acceptance Model (TAM) which canexplain the factors that influence the actual receipt of the use of technology. After that, the relationship between thetwo factors that have been modelled with the Technology Acceptance Model to be treated using Path Analysis(Path Analysis). Where the path analysis was used to analyse the causal relationships between variables in order todetermine the effect of the direct and indirect causes of the variable to a variable result. Based on the analysis anddiscussion, it is obtained as follows that the ease and usefulness of a positive effect on Attitude using VAS positiveeffect on Behavioural Intention using VAS. Behavioural intentions affect the Actual Usage.Keywords: Virtual Arms Solution, Technology Acceptance Model, Path Analysis.

DAMPAK TEKNOLOGI INFORMASI TERHADAP KETAHANAN NASIONAL MASYARAKAT DI KABUPATEN BANGKALAN : SEBUAH PENDEKATAN MODEL SISTEM DINAMIK Ahmadi Ahmadi; Adi Bandono; Nur Safrudin
JOURNAL ASRO Vol 8 (2017): Jurnal Analisis Sistem & Riset Operasi
Publisher : Indonesian Naval Technology College - Sekolah Tinggi Teknologi Angkatan Laut - STTAL

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (957.423 KB)

Dalam rangka mencapai tujuan nasional bukanlah perkara yang mudah. Ancaman, hambatan, gangguan, dan tantangan akan senantiasa mengiringi. Sehingga diperlukan suatu kemampuan untuk menghadapi faktor penghalang tersebut. Hal inilah yang dikenal dengan ketahanan nasional. Di era globalisasi seperti saat ini teknologi informasi (TI) merupakan salah satu faktor yang mempengaruhi ketahanan nasional. Penggunaan teknologi informasi seperti pisau dibelah dua, satu sisi berdampak positif dan satu sisi berdampak negatif. Dampak positif TI akan meningkatakan ketahanan nasional, sebaliknya dampak negatif akan menurunkan ketahanan nasional. Pada penelitian ini akan dibahas dampak TI terhadap ketahanan nasional dengan Kabupaten Bangkalan sebagai lokasi penelitian. Dalam penilaian ketahanan, variabel pokok yang digunakan adalah Indeks Pembangunan Manusia (IPM), partisipasi politik masyarakat (PPM), toleransi dan kerukunan masyarakat (TKM), dan keamanan. Metode yang digunakan dalam penelitian ini adalah Decision Making Trial Evaluation and Laboratory (DEMATEL) untuk mendapatkan hubungan keterkaitan antar variabel, dalam bentuk grup dispatcher dan grup receiver, dan pendekatan sistem dinamik untuk menganalisa dampak TI terhadap ketahanan nasional di wilayah Kabupaten Bangkalan dengan menerapkan dua skenario kebijakan antara lain; skenario menurunkan prosentase pengakses pornografi (skenario 1) dan skenario peningkatan prosentase pengguna sosial media (skenario 2). Hasil simulasi menunjukkan bahwa skenario 2 memiliki dampak yang paling baik terhadap variabel output dari sistem pada penelitian ini. Nilai ketahanan wilayah Kabupaten Bangkalan bernilai 0,77 pada periode akhir simulasi. Sedangkan skenario 1 mengakibatkan nilai ketahanan wilayah Kabupaten Bangkalan 0,76.

STRATEGY DEVELOPMENT OF PUSKOPASKA IN THE ORDER OF MAINTAINING SOVEREIGNTY AND SECURITY THE UNITARY STATE OF THE REPUBLIC OF INDONESIA Hary Nurdi; Iwan Vanany; Ahmadi Ahmadi
JOURNAL ASRO Vol 12 No 4 (2021): International Journal of ASRO
Publisher : Indonesian Naval Technology College - Sekolah Tinggi Teknologi Angkatan Laut - STTAL

Show Abstract | Download Original | Original Source | Check in Google Scholar

The development of science and technology as well as the strategic environment affects the demands for increasing the quality of the Indonesian Navy's human resources, the development of the Puskopaska to make soldiers with the knowledge and technology of weapons science and technology, which is very important, is carried out continuously. This is an effort to carry out the Puskopaska's vision, mission and goals as well as in order to increase the security and defense of the sea and coastal estuaries, therefore a Puskopaska development strategy is needed. The purpose of this research is to obtain factors, criteria, strategy formulation, prioritization and development strategy road map. The research method used is the analytical technique using the IFAS-EFAS matrix, SWOT matrix, QSPM matrix, and BORDA. The results of the study indicate that Puskopaska is in a defensive and guarding position so that the best strategy is to hold regular training programs and add certified trainers, as well as add weapons technology. With the Strength-Opportunity (SO1) strategy, (SO2), (SO3) followed by Strategy (ST1),(ST2),(WO),(WT)sorted by QSPM matrix to get priority strategy. The results of the QSPM matrix rank 7 (Seven) strategies, then grouped the rankings using the BORDA method, from the highest to the lowest scores as a step in starting the stages in the work plan for the next 5 (Five) years. Keywords: Puskopaska Organization, SWOT, BORDA

OPTIMASI PENUGASAN PESAWAT PATROLI MARITIM GUNA MENDUKUNG OPSKAMLA KOARMATIM DENGAN METODE GOAL PROGRAMMING DAN FUZZY INFERENCE SYSTEM Ahmadi Ahmadi; Iwan Vanany; Heri Koerniawan
JOURNAL ASRO Vol 3 (2015): Jurnal Analisis Sistem & Riset Operasi
Publisher : Indonesian Naval Technology College - Sekolah Tinggi Teknologi Angkatan Laut - STTAL

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (520.99 KB)

Konsep umum operasi keamanan laut adalah operasi kehadiran sehari-hari dilaut dilaksanakan oleh kapal dan pesawat udara patroli maritim TNI AL. Pola patroli maritim yang digunakan saat ini KRI sebagai unsur utama. KRI akan melaksanakan patroli pada sektor yang telah ditentukan secara acak. Pola tersebut mempunyai banyak tantangan, yaitu perencanaan operasi yang kurang baik dan membutuhkan anggaran operasional cukup besar, jumlah KRI dan anggaran yang tersedia terbatas, serta kecepatan gerak menuju sasaran. Pusat Penerbangan TNI AL (Puspenerbal) memiliki Pesawat Patroli Maritim yang belum dimanfaatkan secara optimal. Pengamatan yang luas dan cepat merupakan keuntungan pengawasan menggunakan pesawat. KRI yang berpatroli pada daerah tersebut bisa menghemat bahan bakarnya dengan menunggu informasi dari pantauan udara oleh pesawat patroli, sehingga dapat menghemat biaya operasional. Dalam tulisan dilakukan optimasi penugasan Pesawat Patroli Maritim berdasarkan coverage dan biaya operasi pada kondisi radar ideal dan riil dengan menggunakan metode Goal Programming dan Fuzzy Inference System (FIS). Hasil optimasi menunjukkan total maksimum Coverage Area yang diamankan oleh Pesawat Patroli Maritim pada kondisi ideal sebesar 87,0% sedangkan pada kondisi riil sebesar 66,98%. Kecilnya Coverage Area disebabkan oleh berkurangnya kemampuan Coverage Radar pada kondisi Riil. Penghitungan Fuzzy Logic Mamdani memungkinkan kita untuk memprediksi biaya operasional yang harus dikeluarkan apabila menghendaki Coverage Area dengan luasan tertentu.

Co-Authors Aab Abdul Wahab Adi Bandono Agung Maulana Agus Makhrowi Alexander Victor Bukit Arica Dwi Susanto Arie Handito Arie Marbandi Arimbo Arimbo Arys Susanto Avando Bastari Ayip Rivai Prabowo Bambang Suharjo Benny Sukandari Benny Sukandari Budi Santoso W Budisantoso Wirjodirdjo Choirur Rozikin Dani Hutabarat Dedi Setiawan Dedi Sugiyanto Didik W. Cahyono Didit Herdiawan Ashaf Donni Kartiko Edy Susanto Eko Krisdiono Endin Tri Hartanto Farid Muldiyatno Febryan Galih Rahardi Fifin Kurnianto Hadi Syafruddin Hary Nurdi Haryanto Wibowo Heri Ebtanta Heri Koerniawan I Made Suwandiyana I Nengah Putra A I Nengah Putra A Ike Agustiyani Ikhwan Syahtaria Indra Agustian Iskandar Prawiro Iwan Vanany Iwan Vanany Joko Purnomo Joni Hari Purnomo M Agus Arif H Made Suwandiyana Mohamad Solekhan Mohammad Syaifi Muchammadil Chafid Muhammad Arif Nur Safrudin Nurcahya Dwi Asmoro Octo Sahat M. Manurung Okol S Suharyo Okol Sri Suharyo Okol Sri Suharyo Oyu Mulia S Pius Herdasa Krisna Murti Priyadi Hartoko Putra, I Nengah Rifki Najib Rifky Najib Robert Radiyanto Satrio Teguh Amandiri Suparno Suparno Suparno Suparno Suparno, Suparno Suprayitno Suprayitno Sutikno Wahyu Hidayat Sutrisno Sutrisno Tunang Arimbo Udisubakti Cipto Mulyono Udisubakti Cipto Mulyono Udisubakti Ciptomulyono Udisubakti Ciptomulyono Wahyu Endriyanto Wisnu Pryangga Ndarumulya Yudha Sukma Zainal Syahlan

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