Electro chemical machining is a non conventional machining process to machine conducting hard materials using anodic dissolution. The process parameters are needed to be optimized to get better result of material removal rate (MRR) and surface roughness (SR). In this paper MRR and SR values are optimized by Simulated Annealing (SA) and the effect of input parameters are determined by Taguchi De...

The induction of lesions in DNA by combinations of benzo(a)pyrene (B(a)P) and near-ultraviolet light (NUV) with wavelengths of 300 to 480 nm was investigated. Using centrif ugal methods or agarose gel electrophoretic techniques to monitor the conversion of the superhelical double-stranded PM2 DNA to the relaxed circular form, it was possible to quantitate the rates of single-strand breakage in ...

In this paper, we present a parallel simulated annealing (SA) on distributed computing resources. The parallel SA include two types of cooperation mechanism: inner group and inter group cooperations. In the inner group cooperation, SA processes start from the same initial point, however, move to different direction. That is, two concepts: concentration and diversity are included. On the other h...

The Chaotic Multiquenching Annealing algorithm (CMQA) is proposed. CMQA is a new algorithm, which is applied to protein folding problem (PFP). This algorithm is divided into three phases: (i) multiquenching phase (MQP), (ii) annealing phase (AP), and (iii) dynamical equilibrium phase (DEP). MQP enforces several stages of quick quenching processes that include chaotic functions. The chaotic func...

In this paper, we propose a new probabilistic sampling procedure and its application in simulated annealing (SA). The new procedure uses Bayesian analysis to evaluate samples made already and draws the next sample based on a density function constructed through Bayesian analysis. After integrating our procedure in SA, we apply it to solve a set of optimization benchmarks. Our results show that ...

In this paper a parallel algorithm for simulated annealing (S.A.) in the continuous case, the Multiple Trials and Adaptive Supplementary Search, MTASS algorithm, is presented. It is based on a combination of multiple trials, local improved searchs and an adaptive cooling schedule. The results in optimizing some standard test problems are compared with a sequential S.A. algorithms and another pa...

Simulated Annealing (SA) is applied in optimization of slotted tube grain configuration. We propose a CAD based geometry calculation function, to increase calculation accuracy, integrated with internal ballistic model. CAD representation encapsulates all of the geometric entities pertinent to the grain design in a parametric way, allowing manipulation of grain entity (web), performing regressio...

The Genetic Algorithm (GA) and Simulated Annealing (SA), two techniques for global optimization, were applied to a reduced (simplified) form of the phase problem (RPP) in computational crystallography. Results were compared with those of "enhanced pair flipping" (EPF), a more elaborate problem-specific algorithm incorporating local and global searches. Not surprisingly, EPF did better than the ...

Using an automated simulated annealing (SA) procedure, spectrum decomposition on angular measurements of tooth enamel fragments shows that UV irrad iation of modern human and fossil bovid samples results in distinctively different ESR spectra. In the fossil sample, UV irradiation generates qualitatively identical spectra to natural. The amounts of non-oriented CO2 radicals in the modern and fos...

In this study, the performance of supplementary stabilizer for static synchronous compensator (STATCOM) tuned based on simulated annealing in order to improvement of dynamic stability is studied. Since STATCOM is usually used for damping Low Frequency Oscillations (LFO), a supplementary stabilizer is incorporated with STATCOM to reach the mentioned purpose. Simulated Annealing (SA) as a heurist...