applying genetic algorithms on astronomy and engineering

... Genetic algorithms Genetic algorithms, introduced by Holland in [16], belong to the class of approximation (or heuristic) algorithms, and are largely used to solve optimization problems The genetic ... (v) population size, number of iterations, gene encoding and length, selection operation, crossover and mutation operations For what concerns the experiments carried out in section 4, some parameters ... solve linear and nonlinear problems by exploring all regions of the search domain and by exponentially exploiting promising areas through mutation, crossover, and selection operations applied...

Ngày tải lên: 22/06/2014, 23:20

... production of secondary bremsstrahlung photons and knock -on electrons and PCUT and ECUT are the global cut-off energies for photon and electron transport used during electron and photon transport ... calculation algorithms on partial and whole breast radiation treatment plans Radiation Oncology 2010 5:120 Submit your next manuscript to BioMed Central and take full advantage of: • Convenient online ... calculation algorithms on trial eligibility and interpretation of risks to normal tissues is relevant The impact of scatter corrections with WBI techniques comparing pencil beam convolution (PBC),...

Ngày tải lên: 09/08/2014, 09:20

... random and inserts it in a random position Displacement mutation selects a substring at random and inserts it in a random position Reciprocal exchange mutation selects two positions at random and ... IEEE Int Conf Robot Auto., pp 824–829 Gen, M and R Cheng, 1997 Genetic Algorithms and Engineering Design, John Wiley & Sons, New York Gen, M and R Cheng, 1999 Genetic Algorithms and Engineering ... [Gen and Cheng, 1997] Inversion mutation selects two positions within a chromosome at random and then inverts the substring between these two positions Insertion mutation selects a gene at random...

Ngày tải lên: 25/12/2013, 19:15

... environment is assumed By concurrently considering the selection of machines, tools, TADs for each operation type and the sequence among the operations, together with the constraints of PR, conditional ... operation type selection and operation method selection An operation type (OPT) refers to a general machining method without concerning any specific machines and tools (e.g., end-milling and boring) ... a PR depends on the selection of TAD or OPMs These kinds of PRs are designated as conditional PRs and the conditions are attached to them When OPMs are selected first, the conditional PRs can...

Ngày tải lên: 25/12/2013, 19:15

... Period (Month) Monthly Average Concentration (µg/mc) Linear (Monthly Average Concentration (µg/mc)) Figure Monthly evolutions of mean concentrations of NO2 in 2009 Monthly Evolution of Mean Concentration ... μg/mc and per year was 40 μg/mc until 2009 and now is 20 μg/mc Monthly evolutions of mean concentration of NO2 and PM 10 in 2009 are presented in Figures and Evolutions of mean annual concentrations ... hormones and bone matrix proteins are likely to also play a role Most family and association studies to date have focused on the genetic contributions to bone density, a major determinant of bone...

Ngày tải lên: 18/02/2014, 04:20

... colloidal crystals, and carbon nanotubes The advances in characterization of nanoporous materials by physical adsorption in combination with simulation, and modification and functionalization of nanoporous ... BASF-Wyandotte and Dow Chemical Company, respectively Since the block architecture (e.g., diblock EO1nPOn, EOmBOn, triblock EOmPOnEOm, E0 m B0 n E0 m , triblock POnEOmPOn, BOnEOmBOn and cyclic EOmBOn) and ... to be mechanically strong and robust enough to stand attrition, erosion and crushing in adsorption columns or vessels High bulk density and crushing strength, and attrition resistance are desirable...

Ngày tải lên: 02/04/2014, 15:48

Ngày tải lên: 08/05/2014, 18:30

... failure was rare and occurred in only 10% of those on once-daily ABC and 8% of those on twice-daily ABC Genotypes could be quantified for 18 patients on once-daily ABC and 20 on twice-daily ABC ... chain reaction (PCR) on samples obtained from baseline and weeks 2, 4, and 12, evolution of M184 and M184V + K65R went from 0% for both at baseline to 48% and 4.8% at week and 29% and Page of ... based on these factors, then careful assessment and consideration should be given to which combination will allow for the preservation of better treatment options upon virologic failure Among the...

Ngày tải lên: 20/06/2014, 08:20

... Wang and Wang: On relaxed and contraction-proximal point algorithms in hilbert spaces Journal of Inequalities and Applications 2011 2011:41 Submit your manuscript to a journal and benefit from: Convenient ... is firmly nonexpansive and consequently nonexpansive; moreover, S = Fix (Jc) Since the fixed point set of nonexpansive operators is closed convex, the projection Ps onto the solution set S is ... the identity and a nonexpansive operator By using this fact, we relax or remove some sufficient conditions to guarantee the convergence of the algorithms As a result, we extend and improve some...

Ngày tải lên: 21/06/2014, 00:20

... generation is recombined to find the best solution by using three operators: selection, crossover, and mutation [13] The process is repeated until a predefined condition is satisfied Once we have the genetic ... International Conference on Knowledge-Based Intelligent Information and Engineering Systems and the XVII Italian Workshop on Neural Networks, pp 202–208, 2007 [9] Y Zhang, F Zuo, Z Zhai, and C Xiaobin, ... bases on the mechanics of natural selection and genetics to find the exact or approximate solution for a given optimization problem GA is implemented as a computer simulation in which a population...

Ngày tải lên: 21/06/2014, 16:20

... of scientific and engineering applications on the one hand, and the advances in computer technology on the other An excellent, comprehensive reference on matrix computation is Golub and van Loan’s ... implementation The partitioning is based on performance System partitioning Only critical sections are selected for conversion to fixed point Range estimation Bit-true fixed point simulation (e.g., ... multiplication, division, and the square root computation In the fixed point implementation of Cholesky decomposition the square root, division, and multiplication are replaced by IQmath C functions optimized...

Ngày tải lên: 22/06/2014, 19:20

... operations based on the condition that the input graph has girth at least 5, and taking note of operations that cannot occur due to the prioritisation The equations associated with the operations ... vertices A component is connected to the next component in the chain by one edge and the final component in the chain is connected back to the first as indicated As each component must contribute at ... domination number of cubic graphs with girth at least five The Ninth Quadrennial International Conference on Graph Theory, Combinatorics, Algorithms and Applications, pp (electronic), Electron Notes...

Ngày tải lên: 08/08/2014, 12:23

... based on their adaptation to the existing environment and their adaptability to changing environmental conditions Long-living forest trees need genetic variability at the level of individuals, among ... oak decline’ and the influences of decline on genetic structure of stands in the next generation Preconditions for that are investigations concerning the state of damage of oak trees and the complete ... heterogeneous environmental conditions From the view of gene conservation and forest tree breeding, it is important to gain information about the genetic structure effect on the sensitivity to...

Ngày tải lên: 08/08/2014, 18:21

... survival, may be a non-linear function of genetic and non -genetic variables (sire, breed, herd-year) and may also depend on quantitative response variates A possible course of action in the analysis ... probability of « response» is a function of continuous « riskvariables Also, consideration is given to the assumption that candidates for selection are sampled from a distribution with second moments ... Station, France Each calving record included information on the following: region of origin and sire of the heifer, pelvic opening and season of calving, sex and birth weight of the calf, and...

Ngày tải lên: 09/08/2014, 22:23

... additional demands on the system The construction of a facility will have unavoidable impacts on the land use at the site Construction and operation may impact on the surface water bodies and the ... formed by the combustion of coal in the reactor Testing, as defined in rules and regulations under Section 3001 of the 1976 Resource Conservation and Recovery Act RCRA, must be conducted to determine ... gasification of the particular coal with the specified process The wastewater stream exiting the carbon-ash scrubbers may contain dissolved and suspended fly ash and unconverted carbon trapped...

Ngày tải lên: 10/08/2014, 20:20

... and tubular excretion is successful (Brodie and Erdos, 1962) These reactions or transformations can be classified as oxidations, reductions, hydrolyses and syntheses (conjugation) Most animals, ... first phase consisting of a variety of oxidations, reductions, and hydrolyses and the second phase of a limited number of syntheses or conjugations (Williams, 1967) Phase I reactions can result ... and greatly confuse the understanding and prediction of the toxic effects of industrial effluents The majority of toxicological studies conducted in this and other countries on both mammals and...

Ngày tải lên: 10/08/2014, 20:20

... common to the action of toxicants, pharmaceuticals, and radiation The duration of survival of half of a test population of fish at extreme temperature can be expressed as an equation based on ... acclimation and the seasonal environmental temperature when fish were tested directly from field collections (acclimatization) These experiments also showed that each species of fish (and often ... the zone of thermal tolerance of any species (Figure 1), the most important contributor to survival and success in nature is the dynamic cycle of energy intake, conversion and utilization for...

Ngày tải lên: 10/08/2014, 20:20

... procedures A Cholesky decompositon model was used to estimate the relative contributions of additive genetics (A), shared environment (C) and non-shared environment (E) to the phenotypic variance ... studied None of the associations at either age withstood Bonferroni correction for 20 comparisons (20 markers) at p < 0.05 Within Test of Association At age we found no evidence for stratification ... Figure Cholesky decomposition model showing influences of A (additive genetics) and E (non-shared environment) on the variance and covariance of ADHD symptoms across age and Squared path estimates...

Ngày tải lên: 11/08/2014, 16:22

... Vaughn and Bost [61] argue that temperament and attachment are separate constructs, and studies showing interrelationships on the one hand, and independence on the other result from different conceptualisations ... attachment in this sample Gene-environment interaction effects on infant attachment Specific genetic effects on phenotypes may be conditional on specific environments and thus be undetected in other ... effects [113] and 5HTTLPR by stressful environment interaction effects [114], these initial investigations of genetic and geneenvironment interaction effects on attachment need to be confirmed by...

Ngày tải lên: 13/08/2014, 18:21

... samples were reanalysed by conventional restriction fraction length polymorphism as described in [13] Monocyte isolation and ex-vivo stimulation Peripheral blood mononuclear cells were isolated ... means ± standard deviation (SD) if they followed a normal distribution or medians and interquartile range or median and 95% confidence intervals (CI) for non-normal distribution For comparisons between ... here Conclusions Recognition of microbial products via TLRs and subsequent signaling is crucial for the innate immune system to initiate a response Genetic alterations affect this response and...

Ngày tải lên: 13/08/2014, 20:22