منابع مشابه
Testing a new voting machine question methodology
A new question methodology has been developed and used with voting machines in large physics lecture classrooms. The methodology was tested by comparing student performance in voting machine and non-voting machine lecture sections during three consecutive electricity and magnetism quarters of introductory calculus-based physics. Data from The Conceptual Survey of Electricity and Magnetism and c...
متن کاملFatigue Testing
Fatigue is the progressive, localized, permanent structural change that occurs in materials subjected to fluctuating stresses and strains that may result in cracks or fracture after a sufficient number of fluctuations. Fatigue fractures are caused by the simultaneous action of cyclic stress, tensile stress and plastic strain. If any one of these three is not present, fatigue cracking will not i...
متن کاملA New Program-Driven Parallel Machine Simulation Environment
In recent years, it has gradually become popular to use discrete-event simulation as a tool for analyzing the hardware architecture of shared-memory multiprocessors. A complete and detailed machine simulation environment can be utilized to evaluate the performance of a completed prototype hardware architecture in an operating system and application software. This paper describes the development...
متن کاملMachine Cell Formation Based on a New Similarity Coefficient
One of the designs of cellular manufacturing systems (CMS) requires that a machine population be partitioned into machine cells. Numerous methods are available for clustering machines into machine cells. One method involves using a similarity coefficient. Similarity coefficients between machines are not absolute, and they still need more attention from researchers. Although there are a number o...
متن کاملFatigue testing median sternotomy closures.
OBJECTIVE Sternal dehiscence is commonly due to wire cutting through bone. With a biological model, we measured the rate of cutting through bone, of standard steel wire closure, peristernal steel wire, figure-of-eight closure, polyester and sternal bands sternotomy closure techniques. METHODS Polyester, figure-of-eight, peristernal and sternal band closures were tested against standard closur...
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ژورنال
عنوان ژورنال: Journal of the Society of Materials Science, Japan
سال: 1966
ISSN: 1880-7488,0514-5163
DOI: 10.2472/jsms.15.531