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ASRO JOURNAL - STTAL
ASRO JOURNAL is bi-annual international referred journal with the objectives to explore, develop, and elucidate the knowledge of operation research, system analysis, logistic management, and policy & strategy to keep practitioners and researchers informed on current issues and best practices, as well as serving as a platform for the exchange of ideas, knowledge, and expertise among technology researchers and practitioners. ASRO (Analisis Sistem dan Riset Operasi) Journal provides an opportunity to share detailed insights from different understandings and practices associated with technology. It provides an international forum for cross-disciplinary exchange of insights and ideas regarding value and practices for dissemination. ASRO (Analisis Sistem dan Riset Operasi) Journal will publish your work to international society of practitioners and researchers with interest in technology and development from a wide variety of sectors.
Articles
56
Articles
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DETERMINATION OF CRITICAL COMPONENTS FOR NAVIGATION RADAR USING FUZZY FMEA AND TOPSIS

S Suharyo, Okol, Bastari, Avando, Rahman, Abdul

ASRO JOURNAL - STTAL Vol 9 No 2 (2018): International Journal of ASRO
Publisher : Indonesian Naval Institute of Technology - STTAL

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Abstract

In determining the critical components and repair priorities, traditional FMEA still have weaknesses, which puts the traditional FMEA factor severity, occurance and detection at the same level of importance, despite the fact that have different levels of interest and importance weight FMEA assessment teams are ignored. In this study integrated fuzzy method in which the FMEA factor severity, occurance and detection assessed in the form of linguistics. At this fuzzy method, the weight of the assessment team FMEA interests are taken into account. To do perangkingan and priority repair used method Technique for Order Preference by Similarity to Ideal Solution (TOPSIS) based on criteria such as level of risk, economic costs, availability of spare parts, maintenance of economic safety and personal abilities. Application of Fuzzy and TOPSIS method in the FMEA to determine the critical components and priorities of the various alternative repair elected to damage components applied to Sperry Marine Navigation Radar system, which is expected by the application of this method can improve operational performance KRI to keep the areas of national jurisdiction

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)

Susanto, Arica Dwi, Suparno, Suparno, S Suharyo, Okol, Ahmadi, Ahmadi

ASRO JOURNAL - STTAL Vol 9 No 2 (2018): International Journal of ASRO
Publisher : Indonesian Naval Institute of Technology - STTAL

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Abstract

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, -

OPTIMIZATION OF THE ANP AND SET COVERING METHOD FOR THE ALLOCATION OF TANKER IN THE EAST SEA REGION OF INDONESIA

Susanto, Arys, Susanto, Arica Dwi, Ahmadi, Ahmadi, S Suharyo, Okol

ASRO JOURNAL - STTAL Vol 9 No 2 (2018): International Journal of ASRO
Publisher : Indonesian Naval Institute of Technology - STTAL

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Abstract

As an archipelago which has a wider sea area than land, Indonesia, in this case the oil company, must be able to serve and accommodate oil throughout the Indonesian sea, especially the eastern region. The lack of tanker cause the run out of fuel oil in remote areas, so there needs to be a sector division included in oil companies. The method used by researchers was the Analytic Network Process (ANP) approach and the set covering problem method. By determining the right dock location for the Tanker, the dock would be able to cover the entire existing sector, and through the determination of the proper tanker assignment plan, the entire territory of Eastern Indonesia would be able to be covered by the presence of the Tanker. The results of the study show that the candidate starting point assignment was produced by 4 (four) ports as the starting point for the assignment of tankers. These ports consist of Ambon in charge of covering sectors 4, 5, 6 and 7, Makasar port was in charge of sector 1 and to cover sector 3 while Tegal port is in charge of covering the patrol sector 2

DECISION MAKING MODEL ELECTION OF LOCATION OF MENTAWAI NAVAL BASE BY THE APPROACH OF BORDA AND PROMETHEE METHODS

Taryono, Taryono, Ciptomulyono, Udisubakti, K, Buyung

ASRO JOURNAL - STTAL Vol 9 No 2 (2018): International Journal of ASRO
Publisher : Indonesian Naval Institute of Technology - STTAL

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Abstract

Padang Naval Base plans to establish a naval base at the type of "C". Following this matter, the Regional Government of Mentawai Islands District provides 3 (three) alternative places namely in Semabuk Bay, Siuban Bay and Semebai Bay for the location of dock and office. In the selection of Mentawai base this method using Borda and Promethee, this is used because the method can consider alternative evaluation based on factors that are qualitative and quantitative (Pavic, 1991). Based on research of Borda method calculation on 16 base selection criteria, it is found that criteria (K1) of Sailing Flow has the highest weight value that is equal to 10.9% and for the lowest criteria weighted value is occupied by criterion (K14) that is Political Condition of 2%. For the results of ranking against the alternative using Promethee method obtained Semebai Bay is the best location to serve as the location of the base of the Mentawai Naval Base. From the research results can be concluded that the model of decision making by combining Borda and Promethee method is a way to develop the logical relationships that underlie the problem of decision making into a mathematical model that reflects the relationships that occur between the criteria involved

Armansyah, D, Sukoco, N B, Pranowo, W S

ASRO JOURNAL - STTAL Vol 9 No 1 (2018): International Journal of ASRO
Publisher : Indonesian Naval Institute of Technology - STTAL

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Abstract

ABSTRACT Sonic Layer Depth is the vertical distance from surface to the depth where the speed of sound reach itâ??s local maximum. Global Navy as well as Indonesan Navy operates in this kind of layers on a daily basis, wether it be in an anti submarine warfare operation through its ships and aircrafts or in an anti-surface warfare operation waged by its submarines. For the navy, the importance of knowing the exact value of the SLD is because it determines the minimum cut off frequency and sound wave propagation above which sound tends to be trapped and below which a shadow zone exist. This has a direct impact on where the navy operates its sensors and places its platforms in the water column. The best way to estimate SLD is by performing own measurement on the ocean using instrument such as expendable bathytermographs, which can be relatively expensive and time consuming for an operational navy ships, furthermore such measurement may be impractical in the case of mission planning or emergencies. Dedicated oceanography survey for the purpose of science and defense is relatively scarce due to prioritization concerning to the budget available resulting lack of time series in situ CTD observation which cover full annual cycle variation in Indonesia waters. Banda Indonesia Through Flow Dynamic Experiment (BIDE) is multi institution and bilateral oceanography experiment led by Indonesian scientist which utilizes argo float to perform in situ CTD measurement in Banda Sea to get an adequate time series data that cover full annual cycle variation. The dataset is publicly available so defense community as well may utilize the data for defense interest such as sonic layer depth variation analysis in Banda Sea.   Keyword : sonic layer depth, BIDE, argo float, undersea warfare, tactical environment

DETERMINATION OF MAINTENANCE PRIORITY INDONESIAN NAVY SHIP DEPO LEVEL USING FUZZY MCDM

Kartiko, Donni, Suparno, Suparno, S Suharyo, Okol, Ahmadi, Ahmadi, Susanto, Arica Dwi

ASRO JOURNAL - STTAL Vol 9 No 2 (2018): International Journal of ASRO
Publisher : Indonesian Naval Institute of Technology - STTAL

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Abstract

The Indonesian Navy as a defense and security force of the sea has combat tools and supporting facilities projected in the Integrated Fleet Weapon System (Sistem Senjata Armada Terpadu/SSAT) with several components including Indonesian navy ships, marines, aircraft and bases. Depo level maintenance is comprehensive maintenance that can only be carried out by personnel who are experts in their field and supported by complete and sophisticated equipment and facilities. Maintenance at this level includes complete overhaul repairment, repowering MLM (mid life modernization), calibration of all equipment, and repairs to all parts thoroughly. Depo Level Maintenance is the nature of maintaining technical conditions based on rotary hours. If the repair schedule specified in the SPT (System for Planned Maintenance), the schedule must be carried out. This research aimed to present a priority setting solution in Depo level maintenance wherein the highest Indonesian Navy Ship ranking is determined from the level of the decision makers. Fuzzy MCDM is a method developed for decision making on several alternative decisions to get an accurate and optimal decision. In Indonesian Navy Ship Hardepo priority ranking process taken from the level of data processing decision makers using the Fuzzy MCDM method, the 5 highest priority values in implementation were obtained. Hardepo with the highest scores were KRP-812 0.111, BDU-841 0.108, LAM-374 0.107, KRS-624 0.097 and TJA-541 0.073

DETERMINATION OF 120MM / 46A PREVENTIVE CARE INTERVALS FOR MINVET BOATS FOR INCREASING THE RELIABILITY OF THE SYSTEM

Saepullah, Arief, Bernadi, Setiawan, Sutrisno, Sutrisno, Kriswanto, Djoko

ASRO JOURNAL - STTAL Vol 9 No 2 (2018): International Journal of ASRO
Publisher : Indonesian Naval Institute of Technology - STTAL

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Abstract

Most warships, especially corvette types, have a service life of more than twenty years. Intuitively it can be concluded that the components and equipment that have been installed are in the period of wear from the bathtub curve. This paper presents an alternative method in determining the optimum component maintenance intervals for weapons system equipment on ships that have entered wear (wear out). Optimum maintenance costs are determined by optimizing the component maintenance interval with objective functions to minimize the total cost of increasing reliability. The reliability of the system is achieved by increasing the reliability index of its constituent components. Weibull ++ is used to obtain parameters that are appropriate for each damage distribution, while Excel Solvers are used to calculating optimal maintenance intervals. In this writing, a case study will be carried out on the components of Bofors cannon laying gear TAK 120MM / 46A

INFORMATION SECURITY MANAGEMENT STRATEGY ANALYSIS USING SYSTEM DYNAMICS MODELING

Marbandi, Arie, Ahmadi, Ahmadi, Bandono, Adi, S Suharyo, Okol

ASRO JOURNAL - STTAL Vol 9 No 2 (2018): International Journal of ASRO
Publisher : Indonesian Naval Institute of Technology - STTAL

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Abstract

Handling information security management is an absolute thing to do for organizations that have information systems to support the organization's operations. Information systems consisting of assets both software and hardware that manage data and information that are spread over networks and the internet, make it vulnerable to threats. Therefore investment and costs are needed to secure it. Costs incurred for this need are not small, but investment expenditures and information security costs carried out need serious handling to be more effective and on target. The System Dynamics Model is used to evaluate alternative strategies to demonstrate the effectiveness of investment and the cost of managing information security through simulation of policy changes. System Dynamics are methods for describing models and systems analysis that are dynamic and complex, consisting of variables that influence each other in the form of causal relationships and feedback between variables that are either reinforcing or giving balance. Simulation using a dynamic system model in this study illustrates that the management of risk assessment followed by vulnerability reduction efforts has a very large impact on the management of information security. By making a difference in the value of security tools investment, this provides an alternative choice in information security risk management investments to achieve the effectiveness of the overall costs incurred in managing information security

STRATEGIC PLANNING OF INFORMATION AND TECHNOLOGY SYSTEMS OF INDONESIAN NAVAL ACADEMY

Isnadi, Isnadi, Suparno, Suparno, Putra, I Nengah

ASRO JOURNAL - STTAL Vol 9 No 2 (2018): International Journal of ASRO
Publisher : Indonesian Naval Institute of Technology - STTAL

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Abstract

Information technology (IT) has an important role in carrying out the functions of universities, so that it can be trusted to increase the efficiency and effectiveness of the academic process lead to the academic services being more maximal as well as supporting the university's business process innovation to develop. The Naval Academy (AAL) is one of the educational institutions found in the Indonesian Navy and has the task of producing professional Navy officers, possessing current technological mastery capabilities and towards World Class Navy. By referring to the desired results above, AAL uses information technology in conducting teaching and learning activities. The Information System available at the Naval Academy (AAL) is currently not optimal, therefore the authors conducted an analysis to plan the strategic development of information systems and information technology at the Naval Academy (AAL). This research was made using the Ward and Peppard method. The step of this research started with internal analysis, external analysis using PEST analysis, internal IS/IT analysis and external SI/IT analysis to map the information system position at the Naval Academy (AAL) with SWOT analysis. The results were the achievement of the IS/IT formulation strategy and management of IS/IT in the future

DEVELOPMENT OF APPRAISAL SYSTEM TO IMPROVE MILITARY OFFICERS PERFORMANCE ASSESSMENT PROCESS

Agustiono, Wahyudi, Sukandari, Benny

ASRO JOURNAL - STTAL Vol 9 No 2 (2018): International Journal of ASRO
Publisher : Indonesian Naval Institute of Technology - STTAL

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Abstract

This paper at hand is aimed at describing the experience of developing a decision support system used for assessing employee performance. Taking into account the distinctive nature of the military organization that is rigorous, traditional, hierarchical, controlled, bureaucratic, and conservative; this study shows the complexity and challenges when it comes to design and developing the appraisal system. In view of the unique nature of the military organization in performing the appraisal process, this study sought various methods and techniques that could guide the development process. The experimental results suggest how the waterfall model was useful to guide the development process. In developing the appraisal system, this study shows how the Simple Multi-Attribute Rating Technique (SMART) and Representation Operation Memory and Control aids (ROMC) are useful conception. Finally, this study concludes how the selection appropriate approach, method and techniques contribute is critical to successfully the development of appraisal system, especially in a military organization that is considered as unique