Zobrazeno 1 - 10
of 21
pro vyhledávání: '"Donald K, Cohen"'
Publikováno v:
Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology. 228:735-744
Solution of a plane frictionless contact problem for two rough elastic solids is considered. An exact solution of the problem resulting in a singly connected contact region is considered, and it is conveniently expressed in the form of a series in Ch
Publikováno v:
JAWRA Journal of the American Water Resources Association. 44:1337-1346
The residents of Nassau County Long Island, New York receive all of their potable drinking water from the Upper Glacial, Jameco/Magothy (Magothy), North Shore, and Lloyd aquifers. As the population of Nassau County grew from 1930 to 1970, the demand
Autor:
Donald K. Cohen, Mark Lenz
Publikováno v:
Civil Engineering Magazine. 75:58-63
Publikováno v:
Journal of Applied Mechanics. 80
Generally, it is assumed that under any applied force there will always be some gap between the surfaces in a contact of rough elastic surfaces, resulting in a discontinuous (i.e., multiply connected) contact. The presence of gaps along the line cont
Autor:
Donald K. Cohen, Paul J. Caber
Publikováno v:
Applied optics. 31(31)
An autofocus system has been developed that automatically detects the presence of fringes in a white-light interference microscope and adjusts the vertical position of the microscope objective such that the focus error is minimal. The system consists
Publikováno v:
Applied optics. 21(13)
A fog chamber, developed to support measurement of the performance of electrooptical devices in the presence of fog, is discussed. Rationale for the fog chamber concept is presented. Emphasis is placed on the theory of operation of the chamber, an op
Publikováno v:
Applied optics. 20(22)
The authors have previously called attention to the importance of atmospheric and aerosol emission in IR imaging device performance. The present paper derives a more precise and general result than the empirically derived expressions in the earlier p
Autor:
Ziv, Mazor, Donald K, Cohen
Publikováno v:
The International journal of oralmaxillofacial implants. 18(5)
This investigation was conducted to obtain preliminary roughness data on a microtextured implant surface and to determine its ability to sustain a 1-stage surgical procedure and early full occlusal loading of single-tooth restorations in humans.Three
Publikováno v:
SAE Technical Paper Series.
Publikováno v:
SPIE Proceedings.
A new approach is proposed that uses optical phase shifting interferometry to detect phase shifting mask (PSM) defects. The surface topography is measured directly by determining the phase information from the wavefront reflected or transmitted from