Results 71 to 80 of about 244,423 (295)

Farm labor scarcity and its uneven impacts on crop producers in the United States

open access: yesAmerican Journal of Agricultural Economics, EarlyView.
Abstract This study is the first to evaluate the impacts of farm labor scarcity on producers in the United States across different crop production systems. Between 2002 and 2017, we disentangle the effects of labor scarcity from the impacts of rising commodity demand, technological change, and supply of other inputs on labor market outcomes.
Srabashi Ray   +4 more
wiley   +1 more source

Experimental investigations in combining primal dual interior point method and simplex based LP solvers [PDF]

open access: yes, 1993
The use of a primal dual interior point method (PD) based optimizer as a robust linear programming (LP) solver is now well established. Instead of replacing the sparse simplex algorithm (SSX), the PD is increasingly seen as complementing it. The progress
Levkovitz, R   +5 more
core   +3 more sources

Folder 5: Model engine data sheets and operating instructions, G - I, 1978-1980, 1983, 2022

open access: yes, 1978
Specifications, illustration, and operating instructions for the Simplex Hornet 19 model engine.
Simplex Miniature Engines
core  

Clinical and Molecular Characterization of 46 Patients With Beckwith–Wiedemann Spectrum and Uniparental Disomy of 11p15

open access: yesAmerican Journal of Medical Genetics Part A, EarlyView.
ABSTRACT Beckwith–Wiedemann spectrum (BWSp) is an overgrowth disorder characterized by its main clinical features macrosomia, macroglossia, and abdominal wall defects. BWSp is caused by (epi)genetic chromosome 11p15 alterations with approximately 20%–27% of patients exhibiting mosaic paternal uniparental disomy of chromosome 11p15 (pUPD11p15).
Saskia M. Maas   +9 more
wiley   +1 more source

Kullback-Leibler simplex [PDF]

open access: yes
This technical reference presents the functional structure and the algorithmic implementation of KL (Kullback-Leibler) simplex. It details the simplex approximation and fusion.
Kangpenkae, Popon
core  

Anatomy and variation in the paraphyletic Mosasaurus lemonnieri assemblage from the Craie phosphatée de ciply, Belgium

open access: yesThe Anatomical Record, EarlyView.
Abstract Nineteenth century excavations of the Ciply‐Malogne Phosphatic Chalk Formation in Hainaut, Belgium, yielded over 50 partial mosasaur skeletons, the majority of which were referred to the species Mosasaurus lemonnieri Dollo, 1889. In the years since, this taxon has experienced a complicated taxonomic history, and its exceptional hypodigm has ...
Henry S. Sharpe   +3 more
wiley   +1 more source

Remarks on perspective simplices [PDF]

open access: yesFME Transactions, 2017
The planar figure of two triangles being in perspective position is associated with a theorem of Desargues, which is responsible for the fact that the coordinate set of the plane is a field.
Weiss Gunter, Ebisui H.
doaj  

Dynamics of doubly stochastic quadratic operators on a finite-dimensional simplex

open access: yesOpen Mathematics, 2016
The present paper focuses on the dynamics of doubly stochastic quadratic operators (d.s.q.o) on a finite-dimensional simplex. We prove that if a d.s.q.o. has no periodic points then the trajectory of any initial point inside the simplex is convergent. We
Abdulghafor Rawad   +3 more
doaj   +1 more source

On the Complexity of Optimization over the Standard Simplex [PDF]

open access: yes
We review complexity results for minimizing polynomials over the standard simplex and unit hypercube.In addition, we show that there exists a polynomial time approximation scheme (PTAS) for minimizing Lipschitz continuous functions and functions with ...
Klerk, E. de   +2 more
core  

Reduction of HIV-1 RNA levels with therapy to suppress herpes simplex virus. [PDF]

open access: yes, 2007
BACKGROUND: Epidemiologic data suggest that infection with herpes simplex virus type 2 (HSV-2) is associated with increased genital shedding of human immunodeficiency virus type 1 (HIV-1) RNA and HIV-1 transmissibility. METHODS: We conducted a randomized,
Becquart, Pierre   +16 more
core   +1 more source

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