作者：
Vasta, J.Pohler, C.Becker, H.Winter, R.Mr. Vasta is Head of Hull Structures Branch
Naval Ship Engineering Center of the Dept. of the Navy with the responsibility for hull structural design of surface ships and submarines and for planning initiating and technically monitoring research in the field of structural mechanics. Mr. Vasta attended New York University receiving the Bachelor of Science degree in Mechanical Engineering in 1930 and took postgraduate work at the Massachusetts Institute of Technology receiving the Master of Science degree in 1931. He worked in the Structural Mechanics Group of the U. S. Experimental Model Basin from 1931 to 1938. After a short duty at the Headquarters of the U. S. Coast Guard he joined the U. S. Maritime Commission where between 1939 and 1948 he held various positions of responsibility in the Technical Division. Subsequently he joined the former Bureau of Ships first as Head of the Scientific and Research Section from 1948 to 1964 and later as Assistant Chief Naval Architect for Engineering Sciences in the Naval Ship Engineering Center from 1965 to 1966. Mr. Vasta is a member of the Society of Naval Architects and Marine Engineering and of the American Welding Society and is active in many research panels and committees including the Ship Structure Committee and panels in the Welding Research Council. He is chairman of the Hull Structures Committee of the Society of Naval Architects and chairman of the “Fatigue” panel of the International Ship Structure Congress. Mr. Pohler is Head of the Submarine Structural Mechanics Unit
Hull Structures Branch of the Naval Ship Engineering Center with responsibility principally for technical direction of the Navy's submarine structural research program and for development of design criteria for submarine hulls. Mr. Pohler attended the University of Houston receiving the Bachelor of Science degree in Architectural Engineering in 1956 took postgraduate work at the University of California receiving the Master of Engineering degree in Naval Architecture in 1959. He wor
Report of study on stresses in hatches, windows, and adjacent regions in penetrated spheres under external pressure for use in deep submergence structures, using three-dimensional photoelasticity;stress distributions ...
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Report of study on stresses in hatches, windows, and adjacent regions in penetrated spheres under external pressure for use in deep submergence structures, using three-dimensional photoelasticity;stress distributions from conical hatches and windows are compared with available results obtained from testing of models and prototype bathyspheres, and conclusions are developed relating to strength and design of hatches and windows;results obtained from pressurizing small conical windows under constant long-term loading, as preliminary index of tendency of plexiglas windows to creep in service, are included.
Quadrant analysis is a simple, but quite useful, turbulence data-processing technique that has been widely used, principally in the investigation of turbulent shear flows. This article traces the origins of the techni...
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Quadrant analysis is a simple, but quite useful, turbulence data-processing technique that has been widely used, principally in the investigation of turbulent shear flows. This article traces the origins of the technique and reviews how it has been applied during the more than 40 years since it was conceived. Applications are highlighted that have expanded the technique beyond its original formulation.
作者：
MOTHERWAY, D.L.HELLER, S.R.D. L. Motherway received his Bachelor of Science Degree in Mechanical Engineering from the University of Rhode Island in June 1961. He was subsequently employed at General Dynamics/Electric Boat Division
Groton Connecticut where he held positions in their Planning Department as a planning engineer for FBM Submarine Construction and in the Mechanical Division as a design engineer. Motherway went to the Naval Ship Engineering Center Washington D. C. in March of 1966 with the Submarine Hydraulics Section of the Hull Design Branch where he participated in the design of submarine hydraulic systems. He later transferred to the Ocean Engineering Section of the Deck Systems Branch where he participated in design related to deep submergence vehicles and ocean salvage and retrieval systems. During this period at NavSEC he received his Master Science Degree in Mechanical Engineering from the Catholic University of America Washington D. C. From April 1970 to May 1971 he was with the Undersea Long-Range Missile System (ULMS) Submarine Design Development Office in the capacity of Assistant Subsystem Design Director. Currently he is the Senior Project Engineer for the ULMS program at the office of the Supervisor of Shipbuilding Conversion and Repair Groton Connecticut. He is a member of ASNE and ASE. S. R. Heller
Jr. a retired Engineering Duty Officer of the United States Navy received his undergraduate education at the University of Michigan in Naval Architecture and Marine Engineering and in Mathematics. Following typical shipyard duty during World War II he received postgraduate instruction at the Massachusetts Institute of Technology leading to the degrees of Naval Engineer and Doctor of Science in Naval Architecture. Since then he has had design responsibilities in the Bureau of Ships had a maintenance assignment with the Fleet directed structural research at the David Taylor Model Basin engaged in submarine design and construction at Portsmouth Naval Shipyard and was the last Head of Hull Design in the
The comparative heaving characteristics of two unusual ship configurations, a spar‐type ship similar to FLIP and a catamaran which employs a submerged cradle suspended by sophisticated motion attenuation devices, for...
作者：
JONES, RAMr. Robert A. Jones is a Naval Architect in the Deck Systems Branch of the Naval Ship Engineering Center
Hyattsville Md. He holds a Bachelor of Science degree in Mechanical Engineering from the University of Illinois. Upon joining NAVSEC in 1965 he completed the Hull Systems and Weapons Support Division Junior Engineer Training Program and was then assigned to his present position which includes design and system engineering for submersible vehicle mechanical system equipment jettisoning system underwater work tools and submersible vehicle certification. He is a Registered Engineer in Training in the State of Illinois. He is a member of the Marine Technology Society and the Association of Senior Engineers of the Naval Ship Systems Command.
The effects on the ferromagnetism of a nitrogen defect in Cu-doped AlN with a Cu concentration of 2.77-8.33% have been investigated by first-principles. For Alω0.9723 Cuω0.0277 N, a global magnetic moment of 1.46μB...
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