Results 171 to 180 of about 26,851 (306)

Mixed integer programming formulations and heuristics for joint production and transportation problems.

open access: yes
In this thesis we consider different joint production and transportation problems. We first study the simplest two-level problem, the uncapacitated two-level production-in-series lot-sizing problem (2L-S/LS-U).
De Melo, Rafael Augusto
core  

Split rank of triangle and quadrilateral inequalities [PDF]

open access: yes
A simple relaxation of two rows of a simplex tableau is a mixed integer set consisting of two equations with two free integer variables and non-negative continuous variables. Recently Andersen et al.
DEY, Santanu S., LOUVEAUX, Quentin
core  

School Disruption and Classroom Climate on Teachers’ Burnout and Wellbeing

open access: yesPsychology in the Schools, EarlyView.
ABSTRACT Teachers with high levels of burnout and reduced levels of wellbeing are twice as likely to leave the teaching profession. For those that stay, it can result in strained relationships with their pupils and a difficulty to effectively manage classroom behavior.
Julia R. Badger   +5 more
wiley   +1 more source

Mixed Integer Linear Programming Optimization of Gas Supply to a Local Market. [PDF]

open access: yesInd Eng Chem Res, 2018
Mikolajková M, Saxén H, Pettersson F.
europepmc   +1 more source

A New Dantzig-Wolfe Reformulation And Branch-And-Price Algorithm For The Capacitated Lot Sizing Problem With Set Up Times

open access: yes
The textbook Dantzig-Wolfe decomposition for the Capacitated LotSizing Problem (CLSP),as already proposed by Manne in 1958, has animportant structural deficiency.
Degraeve, Z., Jans, R.F.
core  

From traditional practice to unsustainable exploitation: Fruit overharvesting on the endangered relict palm Jubaea chilensis

open access: yesPLANTS, PEOPLE, PLANET, EarlyView.
Overharvesting of wild edible plants poses a growing threat to plant populations worldwide, particularly for slow‐growing species with limited regeneration. We quantified fruit extraction from the third‐largest known population of Jubaea chilensis—an endangered palm endemic to Chile—modeled the critical harvest threshold, and assessed consumer ...
Sebastián Cordero   +7 more
wiley   +1 more source

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