Research and Development of Offshore Platforms for SMS Mining: Part 1—An Integrated Design Tool of Offshore Platforms

2010 ◽  
Author(s):  
Toshiki Chujo ◽  
Shigesuke Ishida ◽  
Kazuhiro Yukawa ◽  
Yasuhiro Namba ◽  
Yasuharu Nakajima ◽  
...  
Keyword(s):  
Safety Assessment ◽  
Supply And Demand ◽  
Integrated Design ◽  
Design Tool ◽  
Offshore Platforms ◽  
Large Area ◽  
Support Tool ◽  
Effective Use ◽  
Design Support Tool ◽  
Seafloor Massive Sulphides

The exclusive economic zone (EEZ) of Japan has a very large area because Japan consists of many islands. As the worldwide supply and demand of natural resources and food are being tight, the technology for the effective use of the EEZ will become the key for the future development of Japan. From this background, the Ministry of Land, Infrastructure, Transport and Tourism of Japan (MLIT) started an R&D project of floating offshore platform technologies in 2007. In this project an integrated design support tool, called “Harmonic Design Tool”, has been developed for evaluating economical and safety aspects of the offshore platforms. At the first stage, the tool makes the basic planning based on many kinds of relating datasets. In the second and third stages, safety assessment and economic evaluation are carried out by datasets and numerical simulation programs. In this paper the outlines of the total tool, each stage, some technical components and a trial estimate for seafloor massive sulphides (SMS) mining platform are presented.

Basic Design of a Semi-Submersible Rig for Experimental Drilling of Methane Hydrate by “Harmonic Design Tool”

2012 ◽  
Author(s):  
Tomoki Taniguchi ◽  
Kazuhiro Yukawa ◽  
Kazuhisa Otsubo ◽  
Hiroshi Sato
Keyword(s):  
Methane Hydrate ◽  
Integrated Design ◽  
Design Tool ◽  
Offshore Platforms ◽  
Basic Design ◽  
Support Tool ◽  
Dynamic Positioning System ◽  
Combined Application ◽  
Design Support Tool ◽  
Seafloor Massive Sulphides

For the growth of demand for utilization of the vast Japanese Economic Exclusive Zone (EEZ), Ministry of Land, Infrastructure, Transport and Tourism of Japan (MLIT) started the R&D project of offshore platform technologies in 2007. National Maritime Research Institute (NMRI) had developed the integrated design support tool, called “Harmonic design tool” for evaluating economical, safety and environmental aspects of the offshore platforms. The tool conducts conceptual design of offshore platforms for seafloor massive sulphides mining, experimental drilling of methane hydrate, combined application of food and energy production. Using the tool, basic design of semi-submersible rig type platform for experimental drilling of methane hydrate is carried out and optimum hull size, predicted steady environmental forces acting on the platform (current, wave, wind forces), thruster specification for Dynamic Positioning System (DPS) such as required thrust force, construction cost are estimated. The purpose of this paper is to evaluate the feasibility of proposed basic design of the platform aspects of stability and position keeping ability. From results of experiments and numerical calculation, it is confirmed that the basic design of the platform proposed by the “Harmonic design tool” is appropriate.

Research and Development of Offshore Platforms for SMS Mining: Part 2—Conceptual Design of the Platform

2010 ◽  
Author(s):  
Sotaro Masanobu ◽  
Shunji Kato ◽  
Shigesuke Ishida ◽  
Shotaro Uto
Keyword(s):  
Conceptual Design ◽  
Integrated Design ◽  
Design Tool ◽  
Offshore Platform ◽  
Offshore Platforms ◽  
Design Support ◽  
Support Tool ◽  
Dynamic Positioning System ◽  
Operation Conditions ◽  
Design Support Tool

National Maritime Research Institute of Japan (NMRI) has been developing the integrated design support tool, called “Harmonic Design Tool”, for evaluating economical / safe / environmental aspects of the offshore platform. We are also conducting the conceptual design of the offshore platforms for assessing the availability and accuracy of this design support tool. Seafloor massive sulphides (SMS) are high-grade hydrothermal deposits rich in copper, zinc and lead with a high gold and silver content. The Japanese Economic Exclusive Zone (EEZ) is well known to have high potential of SMS. Thus we decided the SMS mining as one of the most promising applications for the offshore platform technologies. Based on the published potential map of resources and the metocean database established in this project, we decided Izu-Bonin Arc as the target sea area and derived the design and operation conditions for the offshore mining platform. Then we proceeded to the basic concept such as the production rate and storage capacity, dynamic positioning system for station keeping and operation availability. This paper presents the review of the conceptual design of the offshore platform for SMS mining.

Analysis Tool for Environmental Impact of Seafloor Resources Development

2011 ◽  
Author(s):  
Joji Yamamoto ◽  
Hideyuki Oka ◽  
Yasuharu Nakajima ◽  
Shotaro Uto ◽  
Shunji Inoue ◽  
...  
Keyword(s):  
Environmental Impact ◽  
Impact Analysis ◽  
Supply And Demand ◽  
Ecological Impact ◽  
Recovery Period ◽  
Integrated Design ◽  
Resource Development ◽  
Benthic Organism ◽  
Analysis Tool ◽  
Support Tool

The exclusive economic zone (EEZ) of Japan has a very wide area due to a lot of islands in Japanese Archipelago. As the worldwide supply and demand of natural resources and foods are being tight, the technology for the effective use of the EEZ will become the key for the sustainable development of Japan. From this background, the Ministry of Land, Infrastructure, Transport and Tourism of Japan (MLIT) started an R&D project of floating offshore platform technologies in 2007[1]. In this project an integrated design support tool is developed for evaluating the economical and safety aspects of the offshore platforms. This tool contains the function to estimate an environmental impact of seafloor resource development. We postulated the process of seafloor resource development as follows. The ores mined on seabed are sent up to the platforms as a mixture of the ore particles and water, then the waste water containing inorganic suspended particles is discharged into sea. The particles exhausted in the sea are transported by the advection and diffusion, and sink gradually on seafloor. We developed an analytical code simulating the distribution of discharged particle in both sea and sediments by a simple technique. Mass Consistent Flow Model is used to save the time in the calculation of ocean flow. In addition, the ecosystem model in sediment is developed to estimate the ecological impact of seafloor resource development. It includes benthic organism, zooplankton, bacteria, and particulate organic matter as the components. The ecological impact was assessed based on the recovery period of the biomass. In this paper, the outline of this environmental impact analysis tool and results of the trial calculation for seafloor resource mining are shown.

scholarly journals Extracting and Analysing Design Process Data from Log Files of ICT Supported Co-Creative Sessions

2019 ◽  
Vol 1 (1) ◽  
pp. 129-138 ◽  
Author(s):  
Niccolo' Becattini ◽  
Gaetano Cascini ◽  
Jamie Alexander O'Hare ◽  
Federico Morosi ◽  
Jean-Francois Boujut
Keyword(s):  
Design Process ◽  
Collaborative Design ◽  
Relevant Information ◽  
Design Tool ◽  
Process Data ◽  
Support Tool ◽  
Log Files ◽  
Simulated Environment ◽  
Design Activities ◽  
Design Support Tool

AbstractThe observation of designers' behaviour in collaborative design activities and the analysis of protocols improved the understanding of how novel ideas emerge, what occurs among designers and, indirectly, what methods have a good impact on the outcomes. Yet, protocol analysis requires recording the design sessions, often in a simulated environment, thus introducing a bias in the observation. Moreover, the analysis takes up to 1000 times the duration of the observed design session. These limitations definitely hinder the scalability of this practice to large experiments in real operational environments.This paper investigates the possibility to use the data collected in log files, automatically recorded during collaborative design sessions assisted by an ICT design support tool, as a means to extract relevant information about the design process and ultimately to infer insights about co-designers' cognition during the session. In this perspective, the paper proposes a set of metrics tailored to an Augmented Reality-based collaborative design tool. The study has been carried about by processing the data collected in 5 real case studies conducted in three different design companies.

scholarly journals AI Combine with Wishing Tree Hole, Spitting Tree Hole and Shared Time Bank

2021 ◽  
Vol 251 ◽  
pp. 02022
Author(s):  
Shih-Feng Chang ◽  
Wei-Zheng Zhang ◽  
Wan-Yin Liang ◽  
Jia-Yue Qiu ◽  
Sui Pan ◽  
...  
Keyword(s):  
Poverty Alleviation ◽  
Supply And Demand ◽  
Sharing Economy ◽  
Negative Energy ◽  
Use Of Resources ◽  
Tree Hole ◽  
Time Bank ◽  
Shared Time ◽  
Education Support ◽  
Effective Use

Under the thinking of “sharing economy”, Wish Magic wants to create a platform called “shared time bank”, so that users of the platform can store their free time in the “shared time bank” platform in advance. Then, according to the precise docking of products and services as well as supply and demand, Wish Magic also carries out the “wishing tree hole” platform to effectively interact with users according to the latest news and wish list released by users, and regularly goes to poor areas to carry out relevant poverty alleviation activities, so as to provide education support for local people with educational needs and truly play the role of targeted poverty alleviation. In addition, in today’s situation of prevailing pressure, Wish Magic will also create a “spitting tree hole” platform to provide a space for everyone to spit and vent their negative energy, and provide advice for everyone in work, study, love or marriage and other aspects, and help to solve practical problems. The combination of these three platforms enable people to arrange their time reasonably, make effective use of resources, and help people improve their work efficiency and quality of life, so as to create greater economic and social benefits.

Merging IFC-Based BIM Models: A New Paradigm and Co-Design Support Tool

2017 ◽  
Vol 6 (1) ◽  
pp. 51-64
Author(s):  
Omar Doukari ◽  
Benoit Naudet ◽  
Régine Teulier
Keyword(s):  
Complex Model ◽  
New Paradigm ◽  
Support Tool ◽  
Java Language ◽  
Project Life Cycle ◽  
Key Factor ◽  
Project Model ◽  
Design Support Tool ◽  
Project Life ◽  
Exchange Data

Interoperability is a key factor for BIM and helps to simplify the communication and the cooperation between different actors during the project life-cycle. IFC appears as the best option to exchange data between different software platforms. The purpose of this paper is to offer a proposal for exchanging data by merging IFC-based BIM models. We consider a BIM project model like a large system of multi modules where each part represents a structure (building, road, bridge and tunnel) and should be completed by an IFC model. This article presents a numerical tool which allows the co-design step through a Graphical User Interface (GUI) developed in Java language using the IfcToolsProjects libraries. This work is situated in non-automatic merging models being problematic. The proposal is clearly a co-design assistance. This Interface allows the merging of many buildings represented by different IFC files and produces a new IFC-based buildings complex model. The result is fully exploitable without any data loss. The new merging approach avoids the disadvantages of the “linking” function.

Knowledge-Based Systems as Database Design Tools

2002 ◽  
pp. 43-71 ◽  
Author(s):  
W. Amber Lo ◽  
Joobin Choobineh
Keyword(s):  
Database Design ◽  
Practical Experience ◽  
Support Tool ◽  
Knowledge Based ◽  
Learning Techniques ◽  
Knowledge Intensive ◽  
Design Support Tool ◽  
Term Maintenance ◽  
Database Schemata

Database design process is a knowledge intensive task that requires expertise, practical experience, and judgment. It is not surprising, therefore, that over the last few years many research prototype database design expert systems have been reported in the literature. This paper is a survey of such tools. These tools are compared with respect to four major aspects: database design support, tool flexibility, expert system features, and implementation characteristics. This study reveals that, in general, there is lack of 1) support for all the phases of the design, 2) support for group database design, 3) graphic support, 4) empirical verification of effectiveness of the tools, 5) long-term maintenance of the tool and database schemata, and 6) specialized knowledge representation schemes, inference, and learning techniques.

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