Results 221 to 230 of about 1,132 (258)

Effects of stocking rates on gastrointestinal nematode infection levels in a goat/cattle rotational stocking system

Veterinary Parasitology, 2013
Gastrointestinal nematodes (GIN) are increasingly resistant to anthelmintic drugs worldwide, so integrated control methods are more and more needed for the sustainability of small ruminant farming. Such methods rely on knowledge in epidemiology, physiology, and genetics.
Maurice Mahieu
exaly   +4 more sources

Optimization of handouts for rolling stock rotations

Journal of Rail Transport Planning & Management, 2019
Abstract A railway operator creates (rolling stock) rotations in order to have a precise master plan for the operation of a timetable by railway vehicles. A rotation is considered as a cycle that multiply traverses a set of operational days while covering trips of the timetable.
Ralf Borndörfer, Boris Grimm, Markus Reuther, Thomas Schlechte   +3 more
openaire   +1 more source

Re-Optimization of Rolling Stock Rotations

2014
The Rolling Stock Rotation Problem is to schedule rail vehicles in order to cover timetabled trips by a cost optimal set of vehicle rotations. The problem integrates several facets of railway optimization, such as vehicle composition, maintenance constraints, and regularity aspects. In industrial applications existing vehicle rotations often have to be
Ralf Borndörfer, Julika Mehrgardt, Markus Reuther, Thomas Schlechte, Kerstin Waas   +4 more
openaire   +1 more source

Integrated Optimization of Rolling Stock Rotations for Intercity Railways

Transportation Science, 2016
This paper proposes a highly integrated solution approach for rolling stock planning problems in the context of long distance passenger traffic between cities. The main contributions are a generic hypergraph-based mixed-integer programming model for the considered rolling stock rotation problem and an integrated algorithm for its solution.
Ralf Borndörfer, Markus Reuther, Thomas Schlechte, Kerstin Waas, Steffen Weider   +4 more
openaire   +1 more source

Template-based re-optimization of rolling stock rotations

Public Transport, 2017
Rolling stock, i.e., the set of railway vehicles, is among the most expensive and limited assets of a railway company and must be used efficiently. We consider in this paper the re-optimization problem to recover from unforeseen disruptions. We propose a template concept that allows to recover cost minimal rolling stock rotations from reference ...
Ralf Borndörfer, Boris Grimm, Markus Reuther, Thomas Schlechte   +3 more
openaire   +1 more source

Different rotational stocking management on Brachiaria brizantha structural characteristics

2014
M.L.P. Lima, E.G. Ribeiro, F.F. Simili, L.C. Roma Junior, J.M.C. Silveira, A. Giacomini, A.E. Versesi Filho   +6 more
exaly   +2 more sources

Timetable Sparsification by Rolling Stock Rotation Optimization

2018
Rolling stock optimization is a task that naturally arises by operating a railway system. It could be seen with different level of details. From a strategic perspective to have a rough plan which types of fleets to be bought to a more operational perspective to decide which coaches have to be maintained first. This paper presents a new approach to deal
Ralf Borndörfer, Matthias Breuer, Boris Grimm, Markus Reuther, Stanley Schade, Thomas Schlechte   +5 more
openaire   +1 more source

Set stocking, rotational grazing and forward rotational grazing by sheep on western Oregon hill pastures

Grass and Forage Science, 1984
AbstractData on sheep live weights, herbage standing crop and herbage quality are presented from a 3‐year grazing management study comparing set stocking, four‐paddock rotational grazing and four‐paddock forward rotational grazing systems. In both rotational grazing and forward rotational grazing systems, sheep were sequentially moved from one paddock ...
J. R. WARNER, S. H. SHARROW
openaire   +1 more source

The Beach Dairy Farm Case Study: Management of Rotational Stocking

Journal of Natural Resources and Life Sciences Education, 1995
ABSTRACTIn the spring of 1992, Roger Beach was considering whether to use a seasonal milking strategy for his Holstein dairy cow (Bos taurus) herd. Beach, his wife Ellen, and their two sons operated a medium size dairy farm in southeastern Minnesota. In 1989, they switched from year‐round confinement feeding to a rotational stocking system where cows ...
Craig C. Sheaffer, Melvin J. Stanford, Charlene Chan-Muehlbauer, Douglas Gunnick   +3 more
openaire   +1 more source

Animal perfomace and forage production in continuous stocking or Voisin rotational stocking.

2009
During 120 days the production of a “Panicum maximum cv. colonião” pasture and its reflex in animal performance were evaluated using two grazing methods. The experiment was compound by two treatments: Continuous Stocking (CS) and Rotational Stocking (RS), both with two repetitions.
Lenzi, Alexandre, Pinheiro Machado, Luiz Carlos, Quadros, Fernando Luiz Ferreira de, Pinheiro Machado Filho, Luiz Carlos, Barbero, Leandro Martins, Roma, Claudio Cruz   +5 more
openaire   +1 more source