- Manufacturing Process and Optimization
- Maritime Transport Emissions and Efficiency
- Transportation and Mobility Innovations
- BIM and Construction Integration
- Maritime Navigation and Safety
- 3D Surveying and Cultural Heritage
- Laser and Thermal Forming Techniques
- Engineering Applied Research
- Design Education and Practice
- Transportation Planning and Optimization
- Software Engineering Techniques and Practices
- Product Development and Customization
- Maritime Ports and Logistics
- Marine and Coastal Research
- Resource-Constrained Project Scheduling
- Semantic Web and Ontologies
- Technology and Data Analysis
- Technology Assessment and Management
- Industrial Technology and Control Systems
- Smart Parking Systems Research
- Vehicular Ad Hoc Networks (VANETs)
- Construction Project Management and Performance
- Ship Hydrodynamics and Maneuverability
- Complex Systems and Decision Making
- Software Reliability and Analysis Research
The University of Tokyo
2015-2024
Electronic Systems Design (Malta)
2023
Massachusetts Institute of Technology
2016
Tokyo University of Science
2014
Abstract Various industries are undergoing transformation given recently available pervasive sensors, low-cost and low-latency digital communication, distributed control technologies. The objective of this paper is to support the introduction Internet things (IoT) technologies in maritime industry. industry analyzed as a system systems define performance criteria functions be modeled through simulation. In case, simulation shipping includes models operation, cargo loading, fuel docking for...
The innovative on-demand bus system is developed and the result of field tests shows that valid for different city types. On-demand a demand-responsive transit service where vehicles transport users after they reserve their seats, vehicle does not move if there no reservation. an existing technology it runs all over world, but high running cost problem. aim practical introduction from viewpoint. Local government can start in low with cloud computing technology. In order to build up system,...
While data centers are increasingly important for modern society owing to the expansion in processing demand, they also contribute emissions and thus global warming. The design of such social infrastructure requires sociotechnical evaluation, including identification different needs multiple stakeholders. This study designs proposes concepts center systems as integrated consisting both green power plant response rapid regional growth potential offshore nearshore Southeast Asia. To an...
On-Demand Bus is a Demand Responsive Transit (DRT) service that passengers will be transported by the vehicles after they reserve seat. The vehicle wonpsilat move if there no reservation and efficiency expected as new transportation service. It allows potential to request via Internet or mobile phone, with requests for ride being processed server computer. compose of pick-up location, delivery location desired time (or time). computer executes two main algorithms which are vehicle-choosing...
This paper seeks to propose a brand new system for tacit knowledge elicitation in curved shell plates' manufacturing process. By virtualising the process and automatically suggesting plans, would allow knowledge-interrelated information more specific understandable. Five areas are studied: 1) extraction of plate's real shape from point cloud measured by laser scanner; 2) virtualisation wooden template; 3) automatic suggestion plan; 4) environment; 5) using ripple-down-rules based on...
Curved shell plates used for ship hull have complicated three-dimensional curved surfaces, especially at the bow and stern. The manufacturing processing of been carried out many years by tacit knowledge experience skilled workers using wooden templates, this is heavily dependent on individual skills. Formalization systematization process are desired. This paper proposed a system to enable desired shape without templates. Especially, we analyzed curvature error evaluation method, which...
Abstract To survive in the current shipbuilding industry, it is of vital importance for shipyards to have ship components' accuracy evaluated efficiently during most manufacturing steps. Evaluating by comparing each component's point cloud data scanned laser scanners and ship's design formatted CAD cannot be processed when (1) extract components from include irregular obstacles endogenously, or (2) registration two sets no clear direction setting. This paper presents reformative processing...
Despite proper planning and scheduling, project execution is challenging, one critical factor uncertainty duringthe implementation process. This study presents a system dynamics (SD) model as decision-support for model-based decision-making that considers the of rework generation by predicting dynamic complex behaviour. The SD was developedalong with cycle principally contributes to generation. ofrework performance werevisualized integrated into components.Six different scenarios involving...
For software development, especially massive systems, a waterfall process is used traditionally. A can be highly effective on the condition that master plan fixed and possibility of changes uncertain rework low. However, in development projects, many kinds reworks occur corresponding to requirement program bugs. In addition, with advent cloud-based platforms continuous operations, it possible develop system while operating system. To respond this situation, projects often adopt an agile...
Despite worldwide efforts to develop technologies for autonomous vessels, large-scale implementation has yet be achieved. This lack of achievement is not only due technical and economic constraints but also decision-making individual stakeholders who may explore decisions narrowly, example solely on the maximization short-term profits. Therefore, it desirable consider other combinations by break out this situation. However, challenging grasp how affect entire maritime industry given market,...
Education of design engineering has started to change in response the advancement computer technology. This paper proposes a new educational framework using an e - learning system called ShareFast, Semantic Web-based software for document management with workflow. The offers function keep tracks learner’s behavior so that instructor can analyze it improve materials and class efficiency. It also record learner’ s input output history data conduct performance analysis activities. been used...
This paper reports the development of simulator which helps for introduction On-demand Bus service. bus system is new convenient transportation that passengers will be transported by vehicles after they reserve a seat. The design service very important efficient operation, but there no established theory because it system. developed performs well to introduction. result real field test in Moriyama City shows answer from realistic and useful information designing
Installation of new production facilities in a shipyard can trigger product manufacturing error, causing rework as well decreased speed and increased cost. Features the workers’ skill levels combine to impact error. In this study, method evaluate installation effect shipbuilding process considering both shipyard’s features worker’s is proposed. This evaluates defined by integrated product, workflow organization models using simulation with including error target product. case study on curved...
The maritime industry is trying to utilize new technology for enhancing its competitiveness overcome today’s severe economic situation, and some interact effects, or potentially emergent will emerge during the introduction of these technologies. In this study, various simulations that relate marine logistics shipping were performed. By contrast, a detailed method can reproduce effects required extent. This study utilized Monte Carlo simulation uncertainties, such as market failure...
Design is a central activity to all types of engineering. Each engineer must be equipped with skills in design Education engineering, as result, has now started change response. This paper proposes engineering educational framework using ShareFast, an open source, client/server application for document management system based on workflow, e-learning tool. The association between documents and workflow described by metadata semantic Web technology. client software offers editor create edit...
This paper describes evaluation of applicability an on-demand bus system for older persons as a public transportation alternative that passengers use after making reservations. An service, in which buses arrive when reserved by users, has been developed and demonstrated the community test conducted City Kashiwa's Kashiwa-no-ha area, Chiba Prefecture to evaluate its effectiveness. Results suggest services are used those 65 years old older, who rate more highly willingness pay on average than...
From the viewpoint of technology transfer and education ship design, it is essential to incorporate design process with knowledge. ShareFast a methodology for associating knowledge representing them as multimedia information based on semantic web technology. In this methodology, workflows are implemented by software system. It concluded that system worked very well articulate workflow knowledge, was executed efficiently even inexperienced engineers.
The community test of developed On-demand Bus system, which users can assign time freely in reservation, was held Unzen city, Nagasaki prefecture. According to the test, it shown that convenience could be increased by unique function and system estimated accurate arrival time. As a result, 72.6% passengers agree pay higher fare than existing route bus for moving Bus.