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1.
Brief Bioinform ; 20(6): 2116-2129, 2019 11 27.
Article in English | MEDLINE | ID: mdl-30137230

ABSTRACT

MOTIVATION: With the recent advances in DNA sequencing technologies, the study of the genetic composition of living organisms has become more accessible for researchers. Several advances have been achieved because of it, especially in the health sciences. However, many challenges which emerge from the complexity of sequencing projects remain unsolved. Among them is the task of assembling DNA fragments from previously unsequenced organisms, which is classified as an NP-hard (nondeterministic polynomial time hard) problem, for which no efficient computational solution with reasonable execution time exists. However, several tools that produce approximate solutions have been used with results that have facilitated scientific discoveries, although there is ample room for improvement. As with other NP-hard problems, machine learning algorithms have been one of the approaches used in recent years in an attempt to find better solutions to the DNA fragment assembly problem, although still at a low scale. RESULTS: This paper presents a broad review of pioneering literature comprising artificial intelligence-based DNA assemblers-particularly the ones that use machine learning-to provide an overview of state-of-the-art approaches and to serve as a starting point for further study in this field.


Subject(s)
Genome , Machine Learning , Algorithms , High-Throughput Nucleotide Sequencing/methods , Sequence Analysis, DNA
2.
Rev. andal. med. deporte ; 5(1): 18-27, mar. 2012. tab
Article in English | IBECS | ID: ibc-100481

ABSTRACT

Es un hecho que el deporte de alto rendimiento se ha caracterizado durante los últimos años por un entrenamiento cada vez más específico en el que técnicos y deportistas tienden a utilizar ejercicios y cargas de entrenamiento que se asemejan significativamente a las acciones que debe realizar el deportista durante la competición. Los principios de individualidad y especificidad son dos de los aspectos que mejor explican esta tendencia. En esa línea, esta revisión trata de analizar y entender lo que la bibliografía especializada señala con la realización de uno de los ejercicios más populares que se emplean en el desarrollo de la potencia del upper-body: bench press en sus diferentes variantes(AU)


It is a fact that high performance sport has been characterized in recent years as a more specific training and in which coaches and athletes tend to use exercise and training loads which significantly resemble athletes' real actions during competition. Principles of individuality and specifity are two aspects which best explain this trend. In that vein, this review analyzes and understands what specialized literature says to reach one of the most popular exercises used in upper-body power development: bench press in its different variants(AU)


Subject(s)
Humans , Male , Female , Upper Extremity/physiology , Psychomotor Performance/physiology , Exercise/physiology , Physical Endurance/physiology , Athletic Performance/trends , Physical Conditioning, Human/physiology , /methods , /trends , Anthropometry/methods
3.
Genet Mol Res ; 4(3): 599-607, 2005 Sep 30.
Article in English | MEDLINE | ID: mdl-16342045

ABSTRACT

Microarrays are a new technology that allows biologists to better understand the interactions between diverse pathologic state at the gene level. However, the amount of data generated by these tools becomes problematic, even though data are supposed to be automatically analyzed (e.g., for diagnostic purposes). The issue becomes more complex when the expression data involve multiple states. We present a novel approach to the gene selection problem in multi-class gene expression-based cancer classification, which combines support vector machines and genetic algorithms. This new method is able to select small subsets and still improve the classification accuracy.


Subject(s)
Algorithms , Gene Expression Profiling/methods , Models, Genetic , Oligonucleotide Array Sequence Analysis/methods , Selection, Genetic , Databases, Genetic , Humans , Neoplasms/genetics , Sensitivity and Specificity
4.
Rehabilitación (Madr., Ed. impr.) ; 38(3): 129-132, mayo 2004. ilus
Article in Es | IBECS | ID: ibc-33742

ABSTRACT

La necrosis avascular del hueso grande es un hecho inusual, especialmente cuando no se precede de un acontecimiento traumático. Las necrosis avasculares en los huesos del carpo suelen afectar al hueso escafoides, que es el hueso que se lesiona con más frecuencia en los traumatismos de la muñeca. El escafoides y el hueso grande comparten un mismo tipo de vascularización que es precaria, dependiente de una única arteria principal sin anastomosis vasculares asociadas. Nuestro caso es una mujer joven que, sin traumatismo previo, inicia un cuadro de dolor e impotencia funcional en la muñeca tras una cirugía de liberación del túnel carpiano. Después de resolver el diagnóstico diferencial que plantea el cuadro clínico, se llega a la conclusión de que la paciente ha desarrollado una necrosis avascular del hueso grande. Hemos hecho una revisión de la literatura de los pocos casos publicados sobre necrosis avascular del hueso grande, de la relación con los factores etiológicos conocidos hasta ahora y de los factores de riesgo. También hemos revisado las complicaciones de la cirugía de liberación del túnel carpiano y las alteraciones vasculares que acompañan a esta cirugía. Los factores etiopatogénicos en relación con la necrosis avascular de este hueso, conocidos hasta el momento, son su irrigación deficitaria, la hipermovilidad de los ligamentos del carpo que se produce en muñecas inestables y los microtraumas sobre el hueso que se producen en los movimientos repetitivos de flexión (p. ej., en trabajadores manuales) (AU)


Subject(s)
Adult , Female , Humans , Carpal Tunnel Syndrome/surgery , Osteonecrosis/etiology , Carpal Tunnel Syndrome/complications , Wrist/physiopathology , Postoperative Complications/diagnosis
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