http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Grid Based Path Planning Using CNN & Artificial Potential Field Method
Akter, Shamina,Lee, Deok Jin,Lim, Shin Taek,Chong, Kil To Trans Tech Publications, Ltd. 2013 Applied mechanics and materials Vol.392 No.-
<P>This proposed path planning method combines cellular neural network (CNN) with artificial potential field approach. The fundamental operation based on CNN gray scale image processing and artificial potential is the additional approach for global path-planning. Every point of the environment has a potential value with respect to start and destination position. In the trajectory planning process, a minimum search of potential value of every surrounding neighbor points around a point is done and the neighbor point with the least minimum value is selected as the next location. This procedure is repeated until the goal point is reached. The advantage of using CNN based image processing with artificial potential field function in a vision system is its effectiveness in robot localization while the use of minimum potential value gives a simple yet efficient path planning method. Their feedback criterion is similar to a procedure in filtering the image and it frequently updates the information about obstacles and free path. The parallel processing properties of CNN makes the proposed method robust for real time application.</P>
Starvation and Desiccation Tolerance in Indian Populations of Drosophila Melanogaster
Ravi Parkash,Shamina,Neena 한국유전학회 1993 Genes & Genomics Vol.15 No.3
Data on mean survival times for starvation tolerance under highly wet conditions and desiccation tolerance at zero percent humidity revealed significant differences for four Indian geographical populations of D.melanogaster. The genetic control of these physiological traits was ascertained from the occurrence of little differences between two successive generations of various isofemale lines of D.melanogaster populations. The north Indian populations of D.melanogaster revealed significant higher tolerance for desiccation as compared with the southern populations. On the contrary, for starvation tolerance, under humid conditions, the survival values of the southern populations were found to be significantly higher than that of north Indian populations. It can be argued that the south Indian populations of D.melanogaster which lived in a hot and humid environment throughout the year were poorly protected against desiccation but displayed higher starvation tolerance due to steady metabolic rate at increased ambient temperature. Thus. Indian geographical populations of D.melanogaster revealed adaptively maintained genetic divergence for starvation and desiccation tolerance.
Ethanol Tolerance and Adh Polymorphism in Indian Natural Populations of Zaprionus Indianus
Parkash, Ravi,Shamina,Vashist, Minakshi 한국유전학회 1992 Genes & Genomics Vol.14 No.4
Ten Indian geographical populations of Z.indianus collected along 20˚N latitudinal range, revealed significant clinal variation at the Adh locus and Adh^F allelic frequency correlated significantly with increase in latitude. The abundance of secondary alcohols in the southern Indian tropical and humid environment seemed to exert selective pressure favouring higher frequency of Adh^S allele in Z.indianus. Latitudinal patterns of ethanol utilization as well as ethanol tolerance were observed in the larval and adult individuals of ten geographical populations of Z.indianus. The parallel occurrence of latitudinal variation at the Adh locus as well as ethanol tolerance in colonising populations of Z.indianus could be maintained by balancing natural selection varying spatially along the north-south axis of the Indian sub-continent.
Allozymic Polymorphism in Indian Natural Populations of Drosophila Melanogaster
Ravi Parkash,Suman Sharma,Shamina 한국유전학회 1993 Genes & Genomics Vol.15 No.3
Allozymic variation of seven gene-enzyme systems were analysed in eight Indian natural populations of D.melanogaster collected alnog 22˚ latitudinal range. Acph, Mdh-2 and five esterase loci revealed monomorphism while the other loci were found to be highly polymorphic in all the Indian populations of D.melanogaster. The genetic structures of D.melanogaster populations were characterised by extensive inter-populational genotype as well as allelic frequency heterogeneity; higher genie differentiation at six polymorphic loci; and allelic frequencies were found to correlate with latitude. The patterns of genie differentiation in D.melanogaster populations were comparable to those of populations from other continents. The occurrence of higher genetic variability in D.melanogaster populations was found to be in agreement with its habitat generalist or broad niche-width characteristics. The observed genie divergence patterns at six loci in the populations of D.melanogaster seemed to be maintained by balancing natural selection varying spatially along the north-south axis of the Indian sub-continent.
Latitudinal Variation at adh and est loci in Indian Populations of Two Colonizing Drosophilids
Parkash, Ravi,Yadav, J P,Shamina 한국유전학회 1992 Genes & Genomics Vol.14 No.1
Population samples of Drosophila melanogaster and Zaprionus indianus, collected along 20˚ latitudinal range of the Indian subcontinent, were analysed electrophoretically as well as with heat denaturation technique for patterns of allozymic variation at Adh and Est loci. The Adh^F and Est-6^S allelic frequencies in D. melanogaster; and Adh^F and Est-1^F allelic frequencies in Z, indianus were found to be positively and significantly correlated with increasing latitude. The consistency of the direction of geographical clinal variation across different drosophilids and among continental populations of D. melanogaster; and the occurrence of genie divergence at these loci provide evidence for balancing natural selection mechanisms to maintain such latitudinal allozymic variation in two different colonising species.
Allozymic Homogeneity in Indian Populations of Drosophila Busckii
Parkash, Ravi,Yadav, J P,Shamina 한국유전학회 1992 Genes & Genomics Vol.14 No.2
Allozyme polymorphism for nine gene-enzyme systems were studied through horizontal starch gel electrophoresis in isofemale lines derived from six Indian populations of D. busckii. Five autosomal loci coded for dimeric Aph, Odh, Mdh, Me and Ao phenotypes, and allelic variants were represented by segregating single-band variants. complex Acph patterns were controlled by a duplicate locus while polymorphic esterase loci coded for monomeric enzymes. However, Adh and α-Gpdh were controlled by a single locus each and homozygous strain depicted epigenetic two-banded phenotypes. The Indian geographical populations of D. busckii revealed allozymic similarity at all the loci examined. However, the extent of genic diversity was found to be significantly higher than those of U.S. populations. The available data on the patterns of genetic structure of Indian as well as U.S.populations of D. busckii concurred with that of D. simulans in respect of allozymic homogeneity, lack of geographical clinal variation and lack of adaptive flexibility to a range of climatic conditions. Thus, the allozymic uniformity observed in D. busckill might constitute a genetic strategy for this colonising species in respect of its limited niche-width for spatial climatic adaptations.
Zhibek Abylkassimova,Yermek Abilmazhinov,Maksim Rebezov,Nikolai Maksimiuk,Yury Obolonskiy,Rustem Zalilov,Svetlana Shamina,Konstantin Kolyazov,Yuri Dudko 대한산업공학회 2021 Industrial Engineeering & Management Systems Vol.20 No.2
Manufacturers try to increase their profits, so they improve customer satisfaction, which leads to customer loyalty and increase profits. One of the most important aspects of satisfactory service is the timely delivery of orders. Increasing resource consumption over the past decade has increased researchers" interest in challenges to reducing resource consumption. Proper use of fossil fuels will not only reduce energy consumption, but also reduce emissions. The innovation of this research is to propose a mathematical model considering the constraints related to vehicle speed levels in supply chain scheduling. Considering the relationship between speed and the amount of emissions from fuel in the supply chain-scheduling model, this study intends to reduce the emissions of these gases and also increase customer satisfaction by minimizing delays. The presented nonlinear mixed integer mathematical model is optimized with numerical examples in GAMS is solved and the results are investigated.