نتایج جستجو برای: crossover study

تعداد نتایج: 3985380  

Journal: :Archives of disease in childhood. Fetal and neonatal edition 2015
Prashanth Bhat Deena-Shefali Patel Simon Hannam Gerrard F Rafferty Janet L Peacock Anthony D Milner Anne Greenough

OBJECTIVE To test the hypothesis that in very prematurely born infants remaining ventilated beyond the first week, proportional assist ventilation (PAV) compared with assist control ventilation (ACV) would be associated with reduced work of breathing, increased respiratory muscle strength and less ventilator-infant asynchrony which would be associated with improved oxygenation. DESIGN Randomi...

Journal: :The Journal of chemical physics 2014
Andrii Rudavskyi Carmen Sousa Coen de Graaf Remco W A Havenith Ria Broer

The key parameters associated to the thermally induced spin crossover process have been calculated for a series of Fe(II) complexes with mono-, bi-, and tridentate ligands. Combination of density functional theory calculations for the geometries and for normal vibrational modes, and highly correlated wave function methods for the energies, allows us to accurately compute the entropy variation a...

2015
Maryam Alwashahi Marin Golub Vedran Mornar Kuldeep Singh Ehsan Alirezaei

This paper presents the results of an investigation, and optimization of scheduling system in Sohar University (as a case study) using the genetic algorithm (GA). GA techniques are useful for solving real-world scheduling problem such as timetable which is a complex work and usually done manually. This work focuses on scheduling courses timetable to allocate events (time, subject, and lecturer)...

Journal: :Pediatrics 2001
F Valent S Brusaferro F Barbone

OBJECTIVE To evaluate the association between sleep and wakefulness duration and childhood unintentional injury. Study Design. Case-crossover study. METHODS Two hundred ninety-two injured children who presented at the Children's Emergency Center of Udine, Italy, or their parents were interviewed after a structured questionnaire. Information was collected concerning sociodemographic variables,...

Journal: :Journal of neurology, neurosurgery, and psychiatry 1987
J W Snoek T W van Weerden A W Teelken W van den Burg J P Lakke

A double-blind crossover study of sodium valproate and placebo was conducted in five patients with Meige syndrome. CSF neurotransmitter studies were performed at the end of each treatment period. GABA levels were not influenced by the administration of sodium valproate. An increase in HVA levels was observed in every patient, which may reflect an increase in central dopaminergic activity. This ...

2006
Laura Diosan Mihai Oltean

A new model for evolving crossover operators for evolutionary function optimization is proposed in this paper. The model is a hybrid technique that combines a Genetic Programming (GP) algorithm and a Genetic Algorithm (GA). Each GP chromosome is a tree encoding a crossover operator used for function optimization. The evolved crossover is embedded into a standard Genetic Algorithm which is used ...

Journal: :Inf. Sci. 2007
Ping-Chen Lin Jiah-Shing Chen

Stock valuation is very important for fundamental investors to select undervalue stocks to earn excess profit. However, it may be difficult to use stock valuation results because different models generate different estimates on the same stock. This suggests that the value of a stock should be multi-valued rather than single-valued. We therefore develop a multi-valued stock valuation model based...

Journal: :Soft Comput. 2005
César Hervás-Martínez Domingo Ortiz-Boyer

We cannot deny the effort that the scientific community is devoting to the explanation of the features of the crossover operator of real-coded genetic algorithms and its effect over the evolutive process. This paper is another step in that direction, we analyze the behavior of the Confidence Interval Based Crossover using L2 Norm (CIXL2). This crossover is based on the learning of the statistic...

2015
Gurukripa N. Krishnaprasad Mayakonda T. Anand Gen Lin Manu M. Tekkedil Lars M. Steinmetz Koodali T. Nishant

The segregation of homologous chromosomes during the Meiosis I division requires an obligate crossover per homolog pair (crossover assurance). In Saccharomyces cerevisiae and mammals, Msh4 and Msh5 proteins stabilize Holliday junctions and its progenitors to facilitate crossing over. S. cerevisiae msh4/5 hypomorphs that reduce crossover levels up to twofold at specific loci on chromosomes VII, ...

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