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The decline in the performance of the die casting machine in 1998 after a long period of producing copper terminals showed dimensional defects and instability in product quality, especially in nozzle clogging, reduced copper flow, crust buildup on the gooseneck, plunger movement obstruction, and hydraulic pressure leaks. The purpose of planning the replacement and repair of die-casting machine components is to obtain replacement and repair costs, replacement and repair schedules for the period 2026, and the ratio of maintenance costs to profits. The replacement and repair planning method includes collecting previous maintenance data, applying the inspection-replace-repair-overhaul (IRRO) method, evaluating component conditions, predicting component service life, predicting labor costs, predicting supporting equipment to be used in maintenance, predicting the time to replace spare parts or reinstall repaired components, estimating replacement and repair costs for the period 2026, and calculating the ratio of replacement and repair costs to profits. The planning results obtained replacement and repair costs for the 2026 period are 75.770.000,- IDR with an estimated die casting machine rental rate of  1,500,000 IDR/hour which has the potential to be rented for 1,200 hours/year, and the ratio of maintenance costs to profits is 10,02 % which implies that the die casting machine with a capacity of 40 units/hour is still suitable for use and has the prospect of generating profits for the next few years.

This study presents a high-accuracy real-time soft failure detection framework for large-scale fiber-to-the-home(FTTH) optical access network using a hybrid ensemble of Isolation Forest and One-Class Support Vector Machine (OCVSM). The proposed model was trainde and validated on a real-word multivariate performance dataset comprising more than 1.8 million samples collected at 5-minute intervals from 50 Optical Line Terminal (OLTs) and over 3,000 Optical Network Terminals (ONTs) across a five-month periode(June-October 2025). Ground-truth validation was performed using 111 confirmed network incidents in October 2025 affecting 12,990 customer. The hybrid ensemble achieved Precision 0.940, Recall 0.982, with an average detection delay of only 7.8 minutes-representing an 87.7% reduction compared to conventional manual response (63.5 minutes). The framework significantly outperforms traditional threesholding and recent ML-based methods while demonstrating practical deployability in live operational enviroments.

A crane is a mechanical device used to move loads from one location to another, with gantry cranes being one of the most commonly used types in the industrial sector, particularly at container terminals. While offering numerous benefits, the use of gantry cranes also presents several risks, such as potential structural failure of the crane, falling loads due to damage to hooks or ropes, and collisions with other objects. Additionally, lifting loads beyond the crane’s capacity can lead to equipment damage and even fatal accidents caused by electric shocks or adverse weather conditions like strong winds and rain. This study aims to identify and minimize workplace accident risks by applying the SWIFT (Structured What-If Technique) method. This method identifies hazards through the "what if" approach and evaluates risks using the Risk Rating Number (RRN), which measures the severity and likelihood of potential hazards. The results of this study show that ARTG and STS gantry cranes have 25% of hazards in the priority one category, while RTG has 20% of hazards in the same priority. From these findings, it can be concluded that risk mitigation should be focused on the ARTG and STS types, which show higher risk proportions. The recommendations from this study are to enhance safety procedures, provide continuous training for operators, and conduct regular crane maintenance to reduce the potential for accidents. By implementing these mitigation measures, it is hoped that workplace safety will be maintained and the risk of workplace accidents at the Semarang Container Terminal can be minimized.

This study aims to analyze the role of the Terminal Inspection Service (TIS) Unit in supervising landside facilities at Minangkabau International Airport. Landside facilities include passenger terminals, drop-off areas, parking lots, and other public spaces that serve as key interaction points between airport services and users. Effective supervision of these areas is essential to ensure safety, comfort, and order within the airport environment. A qualitative descriptive approach was employed in this research, with data collected through field observations, in-depth interviews with TIS personnel and related stakeholders, as well as documentation analysis of existing regulations and supervision procedures.The findings reveal that the TIS Unit plays a strategic role in maintaining service quality and the security of landside facilities. This role is carried out through regular monitoring activities, early detection of potential disruptions, and the handling of various violations in public areas. However, the implementation of TIS duties still faces several challenges. These include limited personnel, which restricts comprehensive supervision of all areas; slow response from relevant units when operational issues are reported; and low discipline and compliance among service users, which further complicates enforcement efforts.To enhance the effectiveness of supervision, this study proposes several recommendations. These include strengthening inter-unit coordination within the airport, providing ongoing training for TIS personnel to improve competency and responsiveness, and implementing an integrated digital reporting system to streamline reporting and follow-up processes. Such measures are expected to support more optimal and sustainable supervision of landside facilities at the airport.

The rapid increase in Ro-Ro (Roll-On/Roll-Off) vessel and vehicle traffic at Tanjung Perak Port, Surabaya, has exposed critical inefficiencies in port operations, particularly at key berths such as Jamrud Utara and Jamrud Selatan. These inefficiencies manifest as prolonged queuing times for Ro-Ro vessels and land-based vehicle congestion, leading to delays in cargo handling and increased operational costs. This study aims to evaluate the operational performance of Ro-Ro terminals based on queue time indicators for both Ro-Ro vessels and vehicles. Employing a quantitative descriptive approach, the research integrates the M/M/c queuing model and Fishbone Diagram analysis to identify systemic causes of operational delays and overcapacity. The study reveals that berth utilization rates exceed 75%, indicating saturation, while limited buffer zones and disorganized traffic flow exacerbate vehicle queues. As a case study, the findings offer data-driven insights and practical recommendations, including schedule optimization, dedicated traffic lanes, and infrastructural upgrades to mitigate congestion. The proposed framework not only enhances service efficiency at the port but also contributes to broader logistics performance in Eastern Indonesia. By combining classical queuing theory with root cause analysis, this research introduces a methodological synergy that can be replicated across other Ro-Ro terminals facing similar challenges. The findings underscore the urgent need for integrated port traffic management and infrastructural adaptability in response to growing maritime logistics demands.

Terminals serve as transportation nodes that play a vital role in supporting community mobility and urban economic activities. As the capital city of Papua Province with a population of 420,577 inhabitants, Jayapura City requires an efficient transportation system to support increasingly dynamic social and economic activities. Entrop Terminal, as a Type A Terminal and the main transportation hub of Jayapura City, serves various transportation modes ranging from inter-city inter-provincial transport, cross-border transport, intra-provincial inter-city transport, urban transport, to rural transport. However, there is a significant problem where users prefer to wait for public transportation outside the terminal due to long queues inside the terminal, creating a shadow terminal phenomenon. This research aims to evaluate the facilities available at Entrop Type A Terminal in relation to the quality of services provided to users. This evaluation is important to identify facility and service deficiencies that cause users to be reluctant to use the terminal optimally. The research results are expected to provide recommendations for facility improvements and service quality enhancement at Entrop Terminal, so that it can function optimally as the main transportation hub and reduce the shadow terminal problems occurring in Jayapura City.

This study aims to examine and describe the extent to which the optimization of public services in the transportation sector is implemented by the Gorontalo Regency Transportation Agency. The approach used is qualitative research with descriptive methods, in order to deeply understand the practices of transportation policies at the regional level. Data collection techniques were carried out through in-depth interviews, participatory observation, and documentation of the activities and policies implemented. The results of the study indicate that the optimization of public services in the transportation sector has been taking place progressively based on three main indicators. First, service effectiveness is reflected in the implementation of regulations in accordance with the law, such as controlling private vehicles parked haphazardly to reduce congestion and routine inspections of public vehicles to ensure safety aspects. Second, efficiency is achieved through technical supervision of vehicles that are not roadworthy, including brake conditions, tire wear, and completeness of route permits, as part of efforts to reduce operational risks and improve service quality. Third, productivity increases through the use of digital technology in socialization activities and the provision of supporting infrastructure such as bus stops, terminals, adequate roads, and traffic signs. These findings indicate that the Gorontalo Regency Transportation Agency has implemented a transportation service optimization strategy that is adaptive and oriented to community needs.

Law enforcement against the Self-Interest Terminal (TUKS) in Tanjung Pinang City is an important issue in the context of shipping safety and environmental protection. The background of this research is based on various violations that occur in the field, such as lack of facility maintenance, non-fulfillment of safety standards, and environmental pollution, which shows the absence of suboptimal law enforcement by the Tanjung Pinang Class II Port Authority (KSOP). The purpose of this study is to assist the legal arrangements that regulate TUKS, identify obstacles in law enforcement, and provide suggestions to overcome these obstacles to improve the effectiveness of law enforcement. The research method used is a normative juridical approach with an analysis of applicable laws and regulations, including Law No. 17 of 2008 concerning Shipping, Law No. 32 of 2014 concerning Marine Affairs, and Regulation of the Minister of Transportation Number PM 51 of 2011. In addition, an empirical juridical approach is carried out by interviews and observations to obtain empirical data on the application of law enforcement. The results of the study show that law enforcement by KSOP Class II Tanjung Pinang faces several significant obstacles, such as limited human resources and facilities, lack of coordination between agencies, complicated bureaucratic related procedures, and low awareness and compliance of companies with applicable regulations. These obstacles result in the supervision and enforcement of violations in TUKS not running effectively. To overcome these obstacles, this study suggests several strategic steps. First, increase the capacity and resources of KSOP by increasing protected labor and providing modern equipment. Second, strengthen coordination between agencies through the formation of special forums or committees and the implementation of bureaucratic procedures to accelerate the handling of violations. Third, increasing the awareness and presence of the company through socialization and education programs and involving the public in reporting violations. For this reason, it is recommended to increase the allocation of resources, strengthen coordination between related agencies through the formation of forums or special committees, the community, especially companies that operate TUKS, must actively participate in socialization and education programs organized by KSOP Class II Tanjungpinang and the government and for the Civil Servant Investigator Position to be included in the Position Map within the Technical Implementation Unit of the Directorate General of Sea Transportation of the Ministry Transportation at KSOP Class II Tanjungpnang.    

The growth in population and the usage of private automobiles in Semarang City have an impact on the operation and performance of the Mangkang Terminal with Type A, namely the terminal's class, service evaluation, and performance. The purpose of this study is to identify terminal class criteria, service enhancements, and operational performance that requires improvement at the Semarang Terminal. For this reason, the terminal class is created in accordance with rules governing technical guidelines for defining terminal class criteria, and service and terminal performance are assessed using the IPA method. A Google form with as many questions regarding services as an evaluation of satisfaction and interest is issued to terminal users, with the primary goal of improving and determining terminal class being to identify 5 indications that are tailored to current circumstances. According to the findings of the terminal class study, the Semarang Terminal is in class 1, which is the highest priority for developing and delivering services to road passenger terminals.

Data communication is a field of science that studies the process of sending data, as well as how data can be received from sending and receiving terminals. A computer network is a set of "interconnections" between 2 or more autonomous computers connected by cable or wireless transmission media. Cisco packet tracer is a network simulation application developed by Cisco as a simulator as a learning medium for Cisco devices. Peer-to-Peer (P2P) network simulation using Cisco Packet Tracer software is an effective method for understanding, designing, and analyzing P2P networks in a controlled environment. The method used is literature study and carrying out simulation practice on Cisco Packet Tracer software to simulate a network. This research method aims to outline the steps and procedures required to simulate a Peer-to-Peer (P2P) network using Cisco Packet Tracer software. This abstract presents a brief view of the simulation approach used to model and examine the performance of a P2P network using Cisco Packet Tracer contains implementation steps for peer to peer network simulation. Through simulation, in-depth performance analysis can be carried out on various aspects of P2P networks, such as throughput, latency and reliability. This allows researchers and practitioners to understand how P2P networks behave under various conditions. Thus, P2P network simulation with Packet Tracer provides a useful tool for researchers and practitioners to understand and optimize P2P network performance in various scenarios.

PT. Admiral Lines Belawan Branch is a company that operates owned vessels and is also engaged in agency services. In the sense of representative of the ship owner / principle for processing documents at the port for both arrival and departure of the ship. Ports as arrival and departure terminals for ships and cargo need to provide adequate facilities and services so that ships can be served smoothly and efficiently. Managing the arrival and departure of a ship more smoothly and efficiently cannot be separated from an application called the INAPORNET system. The position of the port as the gateway for a ship entering/leaving the port, especially from within the country or abroad or vice versa, must obtain approval from the authorized agencies at the port, such as the Harbor Master's Office and Port Authority (KSOP), Health Quarantine, Customs and Excise, Immigration. This notification is to ensure that the ship and its cargo entering/exiting the port have complied with the provisions of applicable laws and conventions. Management of the needs and interests of ships and their cargo is carried out by shipping company branches such as PT. Belawan Branch Line Admiral. In writing this paper the author used methods, literature and the internet.

Angkot is one of the conventional forms of transportation that is often used by the public for mobility because the prices are affordable with a variety of routes and a lot of cargo. We can find Angkots easily in various city centers with units that are often many so they can be easily found. But at present, conventional transportation and online transportation, giving rise to many policies and also considerations from various parties involed in contributing betwen online and conventional parties. In all aspects, online transportation is far superios in all aspect, online transportation is far superior in all respects and in line with the deveplopment of the current era of globalization. So that the party that suffetrs the most is conventional transportation because with the times that continue to roll, angkot drivers need to survive and find solutions by taking rationalist actions to maintain the existence of angkot. Actions ned to be taken not only by the angkot driver as a party involed in this dynamic, but the intervention of the local goverment and also the trasportation agency is very important for the contribution of the angkot to balnce the social system in society. So that rationalist actions and also the role of local goverment are very important in supporting conventional transportations operations.

This study aims to find out from a review of the effective implementation of TOS NUSANTARA in the Tanjung Priuk 2 area. The research method used is a qualitative and descriptive research method where research is on observation and observation in the Pier Area 009 Tanjung Priok 1 which has implemented the TOS NUSANTARA system and solved a problem because the TOS NUSANTARA system has not been used in the Tanjung Priok 2 Domestic Area. TOS is an application system that operates Container Terminals. The system regulated in the TOS (Terminal Operating System) can view data online and in real time. The purpose of the TOS system is to manage the planning of goods, tools and all facilities used in all activities at the port efficiently and effectively. Terminal Operating Systems often use other technologies.

Transportation includes several things in relation to moving from one place to another such as road infrastructure, modes of transportation, to the management of its management. The existence of the terminal cannot be separated from the transportation component, especially the public transportation system. The existence of terminals is often accused of being the cause of congestion, this is due to incomplete planning for land use patterns, road network patterns, population distribution patterns, movement needs, operational systems and service levels that lead to a low level of terminal effectiveness.This study aims to determine the effect of the role of the department of transportation, infrastructure, and employee performance on the effectiveness of the Magersari type C terminal in Magelang City. Data was collected using a research instrument in the form of a questionnaire. The sample in this study were 75 respondents, namely public transport drivers at the Magersari type C terminal. The method of analysis used multiple linear regression analysis. The regression formulation in this study is as follows:Y = 2,048 + 0,314X1 + 0,198X2 + 0,258X3 + µ. The results of multiple linear regression showed that there was a partial positive effect on the role of the transportation agency on the effectiveness of the terminal (tcount 3.195 > ttable 1.99346), infrastructure to the effectiveness of the terminal (tcount 2.598 > ttable 1.99346) and employee performance on the effectiveness of the terminal (tcount 2.882 > ttable 1.99346). The influence of the three research variables is very strong with the correlation coefficient of determination (Adjusted R2) = 0.538 which means that the variables of the role of the transportation service (X1), infrastructure (X2), and employee performance (X3) have an effect of 53.8% on the effectiveness of the terminal (Y ) and 46.2% (100% - 53.8%) influenced by variables outside this study.