Current Issue : January - March Volume : 2021 Issue Number : 1 Articles : 5 Articles
Artificial intelligence (AI) has been used in various areas to support system\noptimization and find solutions where the complexity makes it challenging to\nuse algorithmic and heuristics. Case-based Reasoning (CBR) is an AI technique\nintensively exploited in domains like management, medicine, design,\nconstruction, retail and smart grid. CBR is a technique for problem-solving\nand captures new knowledge by using past experiences. One of the main CBR\ndeployment challenges is the target system modeling process. This paper\npresents a straightforward methodological approach to model CBR-based applications\nusing the concepts of abstract and concrete models. Splitting the\nmodeling process with two models facilitates the allocation of expertise between\nthe application domain and the CBR technology. The methodological\napproach intends to facilitate the CBR modeling process and to foster CBR\nuse in various areas outside computer science....
The main goal of the present work is a unitary approach of the physical origin\nof the corrections to the magnetic moment of free and bound electron. Based\non this approach, estimations of lowest order corrections were easily obtained.\nIn the non-relativistic limit, the Dirac electron appears as a distribution\nof charge and current extended over a region of linear dimension of the\norder of Compton wavelength, which generates its magnetic moment. The\ne.m. mass (self-energy) of electron outside this region does not participate to\nthis internal dynamics, and consequently does not contribute to the mass\nterm in the formula of the magnetic moment....
The central interaction of bodies is investigated, which enhances the Newtonian\ninteraction by the exponential factor. As a consequence, it has been\nshown that Black Holes are subordinate to this enhanced interaction. All\nBlack Holes can be systematized in accordance with their mass, the radius of\nthe event horizon and the gravitational field intensity exponent, created by\nthe Black Hole....
A very simple (therefore strong) argument, grounded in the action reaction\nprinciple, predicts the existence of isolated quantum, de Broglie waves. In this\narticle I propose an experimental set up able to detect these quantum waves.\nAs far as quantum waves are associated to any kind of elementary particles,\nmassive or massless, charged or neutral, etc., its character is probably gravitational,\ni.e. , they are micro-gravitational waves. The quantum wave is isolated\nwhen a particle can follow two (or more) alternative paths which later on can\nrejoin and interfere. We know that the corpuscular particle follows one path\nwhile the wave follows both. This wave could perturb a laser beam, and this\nperturbation could be detected in a Mach-Zehnder interferometer....
The crankshaft bearing is the key component of a rotate vector (RV) reducer. However,\nowing to the harsh working load and restricted available space, the bearing often suffers from\nfatigue failure. Therefore, this study proposes a novel optimization method for RV reducer\ncrankshaft bearings. A nonlinear constraint optimization model for the design of the bearing\nconsidering the crowned roller profile is formulated and is solved by using a crow search algorithm.\nThe goal of the optimization is to maximize the fatigue life of the bearing. The design variables\ncorresponding to the bearing geometry and crowned roller profile are considered. The load working\nconditions of the bearing and structure of the RV reducer are analyzed. Various constraints,\nincluding geometry, lubrication, strength of the bearing, and structure of the RV reducer, are\nestablished. Through the optimization design, the optimum crowned roller profile suitable for the\nworking load of the bearing is obtained, and the stress concentration between the roller and raceway\nis eliminated....
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