Results 301 to 310 of about 2,902,197 (338)

Sparse Weighted-Norm Minimum Variance Portfolios

Review of Finance, 2011
Abstract We propose to impose a weighted l1 and squared l2 norm penalty on the portfolio weights to improve out-of-sample (OOS) performances of portfolio optimization when the number of assets becomes large. We show that under certain conditions, the realized risk of the optimal minimum variance portfolio (MVP) obtained from the strategy
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Struts of Minimum Weight

Aircraft Engineering and Aerospace Technology, 1956
IT is intended to show in this article the magnitude of the weight saving which can be achieved on simple struts. It is necessary for any comparison to derive the weight and shape of the solid or hollow strut theoretically most efficient. This can be done most conveniently using the Calculus of Variations and it will be assumed in all cases that the ...
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Design for Minimum Weight

Aircraft Engineering and Aerospace Technology, 1960
A new approach to the problem of minimum‐weight design of stiffened compression panels is presented. It is predominantly based on the plate instability mode in which the sheet and stiffeners, having been stressed to the same degree, simultaneously buckle over a long wavelength with the length of a buckle equal to the pin‐ended length of a panel. Charts
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Minimum Weight Design of Cylindrical Shells

Journal of Applied Mechanics, 1956
Abstract The theory of collapse and minimum weight design of cylindrical shells by Onat and Prager is applied in this paper to the development of a method for designing the variable wall thickness of a cylindrical shell under axial loading and arbitrary pressures to give maximum economy of material. The design is such that the shell does
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Minimum Cost Versus Minimum Weight of Prestressed Slabs

Journal of the Structural Division, 1976
It is found that for a wide range of unit costs of formwork both approaches lead to approximately similar results provided the unit cost ratio of concrete to steel is above 60 (where cost of concrete is per cubic yard and steel per pound). However, if a cost ratio much below 60 prevails, substantial savings can be achieved by using a minimum cost ...
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Minimum weight dome

Soviet Applied Mechanics, 1974
A. S. Dekhtyar', Kh. Uzakov
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Screening and Surveillance for the Early Detection of Colorectal Cancer and Adenomatous Polyps, 2008: A Joint Guideline from the American Cancer Society, the US Multi-Society Task Force on Colorectal Cancer, and the American College of Radiology

Ca-A Cancer Journal for Clinicians, 2008
Robert A Smith, Theodore R Levin, Perry J Pickhardt   +2 more
exaly  

Minimum Information for Reporting on the Comet Assay (MIRCA): recommendations for describing comet assay procedures and results

Nature Protocols, 2020
Peter Møller, Amaya Azqueta, Elisa Boutet-Robinet   +2 more
exaly  

Microbial ecology of expanding oxygen minimum zones

Nature Reviews Microbiology, 2012
Steven J Hallam
exaly  

Minimum information reporting in bio–nano experimental literature

Nature Nanotechnology, 2018
Matthew Faria, Mattias Björnmalm, Kristofer J Thurecht   +2 more
exaly