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Optimal Weighting for Exam Composition [PDF]
Education Sciences, 2018 A problem faced by many instructors is that of designing exams that accurately assess the abilities of the students. Typically, these exams are prepared several days in advance, and generic question scores are used based on rough approximation of the question difficulty and length.
Sam Ganzfried, Farzana Yusuf
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Journal of Marine Science and Engineering, 2021 The composite cylindrical shell pressure structure is widely used for autonomous underwater vehicle (AUV). To analyze the critical buckling problem of variable stiffness (VS) composite pressure structure of AUV, a discrete finite element (DFE) method ...
Zhaoqi Yang, Yonghui Cao, Jing Liu
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An optimal method for stochastic composite optimization [PDF]
Mathematical Programming, 2011 The stochastic composite optimization problem under consideration consists in minimizing the sum \(f+h\) of two convex functions \(f,h\) defined on a compact convex set \(X\subset \mathbb{R}^{n}\), assuming that \(\nabla f\) and \(h\) are globally Lipschitz.
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International Journal of Naval Architecture and Ocean Engineering, 2017 A Collaborative Optimization (CO) methodology for ring-stiffened composite material pressure hull of underwater vehicle is proposed. Structural stability and material strength are both examined. Lamination parameters of laminated plates are introduced to
Bin Li +3 more
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Gradient sliding for composite optimization [PDF]
Mathematical Programming, 2015 We consider in this paper a class of composite optimization problems whose objective function is given by the summation of a general smooth and nonsmooth component, together with a relatively simple nonsmooth term. We present a new class of first-order methods, namely the gradient sliding algorithms, which can skip the computation of the gradient for ...
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Multi-objective Optimization of a Composite Material Propeller Structure
Hangkong gongcheng jinzhan, 2018 Reducing the weight and increasing the torsion stiffness are the two main pursuits in the engineering design work of propeller blade structure. And the application of composite materials has improved the designability of propeller structure.
Zhang Bihui, Li Xile, Zhou Bo
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Modelling and Analysis Library Development for Helicopter Blade and Slender Wings [PDF]
INCAS Bulletin, 2020 In this study, we suggest a framework for optimal design of a composite wing structure with a high aspect ratio at the initial design stage. The optimization framework calculates allowances in the first ply failure, buckling failure and bearing-bypass ...
Sang Ho AHN, Jun Hwan JANG
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Hangkong gongcheng jinzhan, 2018 To give full play to the coefficient of utilization of composite materials and reduce the structure weight, it is very important to optimize the design of thick composite structure.
Cao Hua +4 more
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Estimation and Optimization of Composite Outcomes
Journal of machine learning research : JMLR, 2017 There is tremendous interest in precision medicine as a means to improve patient outcomes by tailoring treatment to individual characteristics. An individualized treatment rule formalizes precision medicine as a map from patient information to a recommended treatment.
Daniel J. Luckett +3 more
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Energies, 2020 In this paper, an improved multi-objective shark smell optimization algorithm using composite angle cosine is proposed for automatic train operation (ATO).
Longda Wang +3 more
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