Local study of newton type algorithms for constrained problems

2006 ◽  
pp. 13-24 ◽  
Author(s):  
J. F. Bonnans
Keyword(s):  
Local Study ◽  
Constrained Problems

Hematospermia: Causes and Evaluation (A local study)

2020 ◽  
Vol 23 (18) ◽  
Author(s):  
Waleed Nassar Jaffa ◽  
Duraid Taha Abdulkareem ◽  
Ehab Jasim Mohammad
Keyword(s):  
Local Study

Local Study on Hydrogen and Hydrogen Gas Bubble Formation on a Platinum Electrode

2019 ◽  
Vol 123 (17) ◽  
pp. 10849-10856 ◽  
Author(s):  
Alberto Battistel ◽  
Christopher R. Dennison ◽  
Andreas Lesch ◽  
Hubert H. Girault
Keyword(s):  
Platinum Electrode ◽  
Bubble Formation ◽  
Hydrogen Gas ◽  
Gas Bubble ◽  
Local Study

scholarly journals Almost vanishing polynomials and an application to the Hough transform

2014 ◽  
Vol 13 (08) ◽  
pp. 1450057 ◽  
Author(s):  
Maria-Laura Torrente ◽  
Mauro C. Beltrametti
Keyword(s):  
Hough Transform ◽  
Affine Space ◽  
Bounded Region ◽  
Pattern Recognition Technique ◽  
Local Study ◽  
Affine Hypersurface ◽  
Automated Recognition ◽  
Real Affine ◽  
Necessary And Sufficient ◽  
Recognition Technique

We consider the problem of deciding whether or not an affine hypersurface of equation f = 0, where f = f(x1, …, xn) is a polynomial in ℝ[x1, …, xn], crosses a bounded region 𝒯 of the real affine space 𝔸n. We perform a local study of the problem, and provide both necessary and sufficient numerical conditions to answer the question. Our conditions are based on the evaluation of f at a point p ∈ 𝒯, and derive from the analysis of the differential geometric properties of the hypersurface z = f(x1, …, xn) at p. We discuss an application of our results in the context of the Hough transform, a pattern recognition technique for the automated recognition of curves in images.

Troop search optimization algorithm for constrained problems

2017 ◽  
Vol 9 (4) ◽  
pp. 755-773
Author(s):  
Biplab Chaudhuri ◽  
Kedar Nath Das
Keyword(s):  
Optimization Algorithm ◽  
Constrained Problems ◽  
Search Optimization

Rapid screening algorithms for stochastically constrained problems

2017 ◽  
Vol 254 (1-2) ◽  
pp. 425-447 ◽  
Author(s):  
Shing Chih Tsai ◽  
Tse Yang
Keyword(s):  
Rapid Screening ◽  
Constrained Problems

scholarly journals The process of culturally adapting the Healthy Beginnings early obesity prevention program for Arabic and Chinese mothers in Australia

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Sarah Marshall ◽  
Sarah Taki ◽  
Penny Love ◽  
Yvonne Laird ◽  
Marianne Kearney ◽  
...  
Keyword(s):  
Childhood Obesity ◽  
Obesity Prevention ◽  
Cultural Adaptation ◽  
Prevention Program ◽  
Delivery Mode ◽  
Evidence Based ◽  
Cultural Adaptations ◽  
Local Study ◽  
Culturally Adapted ◽  
Obesity Prevention Program

Abstract Background Behavioural interventions for the early prevention of childhood obesity mostly focus on English-speaking populations in high-income countries. Cultural adaptation is an emerging strategy for implementing evidence-based interventions among different populations and regions. This paper describes the initial process of culturally adapting Healthy Beginnings, an evidence-based early childhood obesity prevention program, for Arabic and Chinese speaking migrant mothers and infants in Sydney, Australia. Methods The cultural adaptation process followed the Stages of Cultural Adaptation theoretical model and is reported using the Framework for Reporting Adaptations and Modifications-Enhanced. We first established the adaptation rationale, then considered program underpinnings and the core components for effectiveness. To inform adaptations, we reviewed the scientific literature and engaged stakeholders. Consultations included focus groups with 24 Arabic and 22 Chinese speaking migrant mothers and interviews with 20 health professionals. With input from project partners, bi-cultural staff and community organisations, findings informed cultural adaptations to the content and delivery features of the Healthy Beginnings program. Results Program structure and delivery mode were retained to preserve fidelity (i.e. staged nurse calls with key program messages addressing modifiable obesity-related behaviours: infant feeding, active play, sedentary behaviours and sleep). Qualitative analysis of focus group and interview data resulted in descriptive themes concerning cultural practices and beliefs related to infant obesity-related behaviours and perceptions of child weight among Arabic and Chinese speaking mothers. Based on the literature and local study findings, cultural adaptations were made to recruitment approaches, staffing (bi-cultural nurses and project staff) and program content (modified call scripts and culturally adapted written health promotion materials). Conclusions This cultural adaptation of Healthy Beginnings followed an established process model and resulted in a program with enhanced relevance and accessibility among Arabic and Chinese speaking migrant mothers. This work will inform the future cultural adaptation stages: testing, refining, and trialling the culturally adapted Healthy Beginnings program to assess acceptability, feasibility and effectiveness.

scholarly journals An Optimization Method for the Configuration of Inter Array Cables for Floating Offshore Wind Farm

2017 ◽  
Author(s):  
Yann Poirette ◽  
Martin Guiton ◽  
Guillaume Huwart ◽  
Delphine Sinoquet ◽  
Jean Marc Leroy
Keyword(s):  
Wind Farm ◽  
Optimization Problem ◽  
Initial Point ◽  
Trust Region ◽  
Optimization Method ◽  
Global Optimum ◽  
Offshore Wind ◽  
Finite Element Software ◽  
Constrained Problems ◽  
Floating Offshore Wind Turbines

IFP Energies nouvelles (IFPEN) is involved for many years in various projects for the development of floating offshore wind turbines. The commercial deployment of such technologies is planned for 2020. The present paper proposes a methodology for the numerical optimization of the inter array cable configuration. To illustrate the potential of such an optimization, results are presented for a case study with a specific floating foundation concept [1]. The optimization study performed aims to define the least expensive configuration satisfying mechanical constraints under extreme environmental conditions. The parameters to be optimized are the total length, the armoring, the stiffener geometry and the buoyancy modules. The insulated electrical conductors and overall sheath are not concerned by this optimization. The simulations are carried out using DeepLines™, a Finite Element software dedicated to simulate offshore floating structures in their marine environment. The optimization problem is solved using an IFPEN in-house tool, which integrates a state of the art derivative-free trust region optimization method extended to nonlinear constrained problems. The latter functionality is essential for this type of optimization problem where nonlinear constraints are introduced such as maximum tension, no compression, maximum curvature and elongation, and the aero-hydrodynamic simulation solver does not provide any gradient information. The optimization tool is able to find various local feasible extrema thanks to a multi-start approach, which leads to several solutions of the cable configuration. The sensitivity to the choice of the initial point is demonstrated, illustrating the complexity of the feasible domain and the resulting difficulty in finding the global optimum configuration.

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