... the challenge of producing a stable system that can effectively extract energy from constantly changing wave conditions. Recent studies have shown that the use of negative stiffness can address this issue, and this approach has been adopted in the present study for the pitch-type WEC-rotor (Salter's duck...

... package was supplemented with a data acquisition system which recorded propulsion, GPS, speed and heading information. This paper discusses and presents analysis work using the raw field data towards generating a continuous record of ice conditions. We present results towards automating the extraction...

... coastline natural language mauritania government information retrieval information management machine learning shoreline nouakchott autonomy port erosion algorithm accuracy coastline extraction africa government artificial intelligence climate change extraction platform t-shaped...

... ABSTRACT In order to improve the efficiency of ship production design, A method of automatically extracting the information of hull plate parts from segmented 3D model and generating 2D part drawing is proposed. This method uses CAA development tool to carry out CATIA secondary development...

... of Electrical Engineering, Chalmers University of Technology Gothenburg, Västra Götaland, Sweden ABSTRACT A novel concept is presented on lithium extraction of desalination from marine renewable energy sources. The wave- and marine current energy converters designed at Uppsala University in Sweden are evaluated...

... lower end interaction mechanical behavior sheet-pile extraction model experiment right pipe deflection ground density deformation experiment flexible pipe left pipe pipe sheet pile extraction extraction twin pipe pipeline pile extraction model pipe Model Experiments...

... pore pressure development operation time extraction pore pressure permeability spudcan diameter extraction resistance negative excess pore pressure coefficient undrained condition ultimate suction spudcan extraction suction spudcan excess pore pressure operation load upstream oil...

... power takeoff frontal area betz limit social responsibility peak efficiency rotary vane dashpot renewable energy sustainable development johnstone sustainability marine current energy extraction vibration cylinder ocean energy efficiency angular displacement energy extraction...

...Model Tests on Effects of Spudcan Penetration and Extraction on Adjacent Piles Jianhua Wang1,2 Yifei Fan1,2 Weijie Gao1,2 Zhaofeng Tian1,2 1: State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University 2: Geotechnical Engineering Institute, Tianjin University Tianjin, P...

... damping has considerable effect on the performance of the WEC rotor. KEY WORDS: WEC rotor, CFD, linear damping, quadratic damping, energy method. INTRODUCTION The energy extraction from the ocean waves has been recognized for more than two centuries and proposed broad, reasonably coherent and clear wave...

... bearing capacity after spudcan penetration and extraction are compared with that before. Studies has shown that the grid size of 0.25d (d is pile diameter) and pile loading speed at 5cm/s can calculate pile vertical bearing capacity accurately. The finite element calculation results of pile bending moment...

... ABSTRACT Following the recent successful test extraction of gas hydrates in the South China Sea, fresh efforts are underway to develop equipment and facilities in a move towards commercial exploitation of this vast reserve of future energy source. Conventional subsea drilling and production...

... ABSTRACT In order to ensure the safe construction of SJ350 jack-up rig at ZK2 location in the waters of Shanghai Lingang survey area, the penetration and extraction of pile leg of the rig in this area is studied and analyzed. First of all, the bearing capacity of foundation of pile penetration...

... and environmental impact (Ekins et al., 2006), although this may not always be the case and pile extraction may become necessary or prove to be beneficial in some instances where future structures are designed to be fully recoverable. load-displacement curve friction angle model pile loose sand...

... significant economic challenges due to the high cost of mooring and recovery of the uranium adsorbing polymer. This paper presents two new designs of a seawater uranium extraction system coupled to a floating offshore wind turbine to eliminate the need for additional mooring and increase the overall energy...

... features are extracted from the thinning result and then the related position information is calculated by the corresponding features of two adjacent tracks. Several field trials are carried out to verify the efficiency of our approach. Experimental results show that the presented technology is feasible...

... of this project is the start of large-scale work of Russia in Arctic to extract natural resources. Accomplishment of this and similar projects has important impact on the Russian engineering industry and shipbuilding development (Infotek, 2014). In several years oil and gas companies with an arsenal of 100...

... Development of a Multi-Water-Chamber Type Seawall for Effective Wave Power Extraction and Wave Dissipation Firman Husain Civil and Environment Course, Graduate School of Science and Technology, Ehime University, Japan Naval and Ocean Engineering Department, Faculty of Engineering of Hasanuddin...

... increase the energy conversion efficiency. vibration refinement experimental setup efficiency upstream cylinder extraction setup fracture structural design tandem arrangement fluid mech plot correspond frequency circular cylinder single cylinder amplitude movable cylinder Energy...

..., based on digital photographic data obtained from survey cruises conducted in Japanese license area in Clarion-Clipperton Fracture Zone. First, the authors calculated systematic errors of estimation which can be caused by miss-setting of the threshold values used in the automatic extraction...