Results 111 to 120 of about 12,325 (304)

Jensen-Type Inequalities for Invex Functions

open access: yes, 1999
Jensen's inequality for a real convex function f on a convex domain is generalised in several ways to vector functions with a cone inequality, and to invex functions generalizing convex ...
Craven, Bruce Desmond   +2 more
core  

The Age and Origin of Block Deposits in the Victorian Alps, Australia

open access: yesPermafrost and Periglacial Processes, EarlyView.
ABSTRACT Large periglacial block deposits are found in the mountains of southeastern Australia. Despite their widespread distribution, their mode of formation and age are poorly understood. These landforms hold considerable potential to shed light on the nature of cooling during glacial periods. In this paper we present a new study of block deposits in
Timothy T. Barrows   +4 more
wiley   +1 more source

On the duality operator of a convex cone

open access: yes, 1985
Let C be a convex set in Rn. For each y ϵ C, the cone of C at y, denoted by cone(y, C), is the cone {α(x − y): α ⪖ 0 and x ϵ C}. If K is a cone in Rn, we shall denote by K∗ its dual cone and by F(K) the lattice of faces of K. Then the duality operator of
Tam, Bit-Shun
core   +1 more source

Optimality Conditions for Approximate Solutions in Multiobjective Optimization Problems

open access: yesJournal of Inequalities and Applications, 2010
We study first- and second-order necessary and sufficient optimality conditions for approximate (weakly, properly) efficient solutions of multiobjective optimization problems. Here, tangent cone, -normal cone, cones of feasible directions, second-order
Lee HeungWingJoseph   +2 more
doaj  

Cones in convexity space; ordered convexity spaces

open access: yesJournal of Numerical Analysis and Approximation Theory, 1980
Not available.
openaire   +3 more sources

Computing the recession cone of a convex upper image via convex projection

open access: yes, 2023
It is possible to solve unbounded convex vector optimization problems (CVOPs) in two phases: (1) computing or approximating the recession cone of the upper image and (2) solving the equivalent bounded CVOP where the ordering cone is extended based on the
Ulus, Firdevs, Kováčová, Gabriela
core  

Actuation Strategies for Underwater Jet‐Propelled Soft Robots

open access: yesJournal of Field Robotics, EarlyView.
ABSTRACT This review article examines jet‐propulsion mechanisms in underwater soft robotic systems, focusing exclusively on physically fabricated and experimentally validated robots. Covering research published from 2013 to 2025, this study classifies and evaluates jet‐propulsion robots based on their actuation mechanisms.
Angel Kitone   +3 more
wiley   +1 more source

A new smooth failure criterion for concrete inspired by Lubliner's condition

open access: yesStructural Concrete, EarlyView.
Abstract A new failure criterion with 10 parameters is proposed, based on Lubliner's idea of joining two Drucker–Prager cones. The novelty lies in the way of introducing deviatoric shape variation: through two Podgórski's functions. This feature allows for improving plane stress cross‐section's compatibility with experimental data.
Inez Kamińska, Aleksander Szwed
wiley   +1 more source

Convex bodies and convexity on Grassmann cones

open access: yesArchiv der Mathematik, 1962
Ewald, G., Shephard, G.C., Busemann, H.
openaire   +1 more source

Convex subcones of the contingent cone in nonsmooth calculus and optimization

open access: yes, 1987
The tangential approximants most useful in nonsmooth analysis and optimization are those which lie "between" the Clarke tangent cone and the Bouligand contigent cone. A study of this class of tangent cones is undertaken here. It is shown that although no
Doug Ward
core   +1 more source

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