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Semantic rule Based Image Visual Feature Ontology Creation

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International Journal of Automation and computing 2014年第5期11卷 489-499页

作者： r. I. Minu k. k. Thyagharajan Department of Computer Science & Engineering Jerusalem College of Engineering rMD Engineering College

Multimedia is one of the important communication channels for mank.nd. Due to the advancement in technology and enormous growth of mank.nd, a vast array of multimedia data is available today. This has resulted in the obvious need for some techniques for retrieving these data. This paper will give an overview of ontology-based image retrieval system for asteroideae flower family domain. In order to reduce the semantic gap between the low-level visual features of an image and the high-level domain k.owledge, we have incorporated a concept of multi-modal image ontology. So, the created asteroideae flower domain specific ontology would have the k.owledge about the domain and the visual features. The visual features used to define the ontology are prevalent color,basic intrinsic pattern and contour gradient. In prevalent color extraction, the most dominant color from the images was identified and indexed. In order to determine the texture pattern for a particular flower, basic intrinsic patterns were used. The contour gradients provide the information on the image edges with respect to the image base. These feature values are embedded in the ontology at appropriate slots with respect to the domain k.owledge. This paper also defines some of the query axioms which are used to retrieve appropriate information from the created ontology. This ontology can be used for image retrieval system in semantic web.

关键词： Information and k.owledge computer vision intelligent computing feature extraction ontology

Distribution of Pill Millipedes (Arthrosphaera) and Associated Soil Fauna in the Western Ghats and West Coast of India

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Pedosphere 2008年第6期18卷 749-757页

作者： k. M. ASHWINI k. r. SrIDHAr Microbiology and Biotechnology Department of Biosciences Mangalore University Mangalagangotri

Seven sampling sites in each of three biomes (Western Ghats, foothills of Western Ghats and west coast) of south- western India were investigated to study the distribution, abundance and ecology of pill millipedes (Arthrosphaera) and associated fauna in relation to edaphic features. Abundance and biomass of Arthrosphaera and other millipedes were the highest in Western Ghats, while earthworms were in foothills. Arthrosphaera magna and Arthrosphaera spp. were common in Western Ghats and foothills respectively, while no Arthrosphaera were found in the west coast. None of the sampling sites consisted of more than one species of Arthrosphaera. Biomass of Arthrosphaera, other millipedes and earthworms significantly differed in Western Ghats (P = 9.48 × 10-7) and foothills (P = 1.35 × 10-8), as did the biomass of species of Arthrosphaera (P = 2.76 × 10-7) between Western Ghats and foothills. Correlation analysis revealed that biomass of Arthrosphaera was significantly (P = 0.01, r = 0.45) correlated with soil organic carbon rather than other edaphic fea- tures (pH, phosphate, calcium and magnesium). Distribution pattern, abundance, biomass and ecology of Arthrosphaera of Western Ghats in relation to soil qualities were compared with millipedes of other regions of the world.

关键词： Arthrosphaera distribution edaphic features pill millipedes Western Ghats

ON INTEGrITY ASSESSMENT OF AXISYMMETrIC COMPONENTS OPErATIng WITHIN CrEEP rEGIME

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Chinese Journal of Mechanical Engineering 2006年第4期19卷 492-495页

作者： ZArrABI k.LAWrENCE ng School of Mechanical and Manufacturing Engineering University of New South Wales Sydney NSW 2052 Australia

A multiaxial paradigm for predicting creep damage/lives of components is described. Although in principle the paradigm is general, it is verified using axisymmetric experimental data. It is shown that the proposed paradigm is capable of predicting creep lives with an error of less than 2%. It is also shown that the proposed paradigm is more accurate than the reference stress method.

关键词： Creep damage Creep life

Activator-assisted electroless deposition of copper nanostructured films

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International Journal of Minerals,Metallurgy and Materials 2014年第2期21卷 196-203页

作者： Varsha r. Mehto r. k. Pandey Department of Physics Barkatullah University NIIT University

This paper showed simple and effective synthesis of copper nanoparticles within controlled diameter using direct electroless deposition on glass substrates, following the sensitization and activation steps. Electroless-deposited metals, such as Cu, Co, Ni, and Ag, and their alloys had many advantages in micro- and nanotechnologies. The structural, morphological, and optical properties of copper deposits were characterized using X-ray diffraction （XrD）, atomic force microscopy （AFM）, and UV-Vis spectroscopy. The structural data was further analyzed using the rietveld refinement program. Structural studies reveal that the deposited copper prefers a （111） orientation. AFM studies suggest the deposited materials form compact, uniform, and nanocrystalline phases with a high tendency to self-organize. The data show that the particle size can be controlled by controlling the activator concentration. The absorption spectra of the as-deposited copper nanoparticles reveal that the plasmonic peak.broadens and exhibits a blue shift with decreasing particle size.

关键词： nanostructured materials thin films copper electroless plating deposition

Drop formation at nozzles submerged in quiescent continuous phase： an experimental study with TBP-dodecane and nitric acid system

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Nuclear Science and Techniques 2018年第6期29卷 110-118页

作者： Amitava roy MayurDarek.r k. k. Singh k. T. Shenoy r. B. Grover Homi Bhabha National Institute Anushaktinagar Mumbai 400094 India Chemical Engineering Division Bhabha Atomic Research Centre Mumbai 400085 India

Solvent extraction is an important process in the nuclear fuel cycle. Tributyl phosphate(TBP) diluted with dodecane is commonly used as a solvent for extracting heavy metals from nitric acid medium. Studies on hydrodynamics of a single drop, which is the smallest mass transfer entity, are required for better understanding of the complex mass transfer and phase separation phenomena that occur in extraction equipment. In this study, drop formation at nozzles is studied using 30% TBP-dodecane as the dispersed phase and dilute nitric acid as the quiescent continuous phase. Experiments are carried out to determine the drop diameter, jetting velocity, drop detachment height and drop detachment time for various dispersed phase velocities, nozzle diameters(1.91, 3.04, and 4.88 mm), and nitric acid concentrations(0.01, 1, 3 N). Drop formation is captured using high-speed imaging, which enables quantification of drop size, onset of jetting, drop detachment height, and drop detachment time. Experimental data are used to propose correlations for predicting drop diameter and minimum jetting velocity. The correlations are found to be very accurate with average absolute relative errors being 5.23 and 2.97%, respectively.

关键词：试验性硝酸静止沉没系统高速度分离现象磷酸盐

A discrete model for prediction of radon flux from fractured rock.

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Journal of rock.Mechanics and Geotechnical Engineering 2018年第5期10卷 879-892页

作者： k.M. Ajayi k. Shahbazi r Tuk.araja k. k.tzenstein Department of Mechanical Engineering South Dakota School of Mines and Technology Rapid City SD 57701 USA b Department of Mining Engineering and Management South Dakota School of Mines and Technology Rapid City SD 57701 USA Department of Geology and Geological Engineering South Dakota School of Mines and Technology Rapid City SD 57701 USA

Prediction of radon flux from the fractured zone of a propagating cave mine is basically associated with uncertainty and complexity. For instance, there is restricted access to these zones for field measure- ments, and it is quite difficult to replicate the complex nature of both natural and induced fractures in these zones in laboratory studies. Hence, a technique for predicting radon flux from a fractured rock.using a discrete fracture network.（DFN） model is developed to address these difficulties. This model quantifies the contribution of fractures to the total radon flux, and estimates the fracture density from a measured radon flux considering the effects of advection, diffusion, as well as radon generation and decay. radon generation and decay are classified as reaction processes. Therefore, the equation solved is termed as the advection-diffusion-reaction equation （ADrE）. Peclet number （Pe）, a conventional dimensionless parameter that indicates the ratio of mass transport by advection to diffusion, is used to classify the transport regimes. The results show that the proposed model effectively predicts radon flux from a fractured rock. An increase in fracture density for a rock.sample with uniformly distributed radon generation rate can elevate radon flux significantly compared with another rock.sample with an equivalent increase in radon generation rate. In addition to Pe, two other independent dimensionless parameters （derived for radon transport through fractures） significantly affect radon dimensionless flux. Findings provide insight into radon transport through fractured rock. and can be used to improve radon control measures for proactive mitigation.

关键词： radon mass flux radon dimensionless flux Stochastic model Discrete fracture network.(DFN) Caving mining method Fractured rock.

k.nematic and morphometric evidence for recent reactivation of the k.le-Yeşilyurt fault zone within the East Anatolian Fault System

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Journal of Mountain Science 2024年第12期21卷 4149-4176页

作者： Elif akgÜN Fırat University Department of Geological Engineering Elazığ23119Türkiye

The k.le-Yeşilyurt Fault Zone(k.FZ)exhibits recent tectonic reactivation,which is critical for understanding regional seismicity and the geodynamic evolution of the East Anatolian Fault System(EAFS).This study integrates k.nematic and morphometric analyses to explore the reactivation processes along the *** analysis,incorporating fault-slip data and stress inversion,reveals complex deformation patterns characterized by strik.-slip and extensional movements,with NE-SW trending minimum stress *** 6,2023,earthquak. sequence highlighted significant stress accumulation along the k.le-Yeşilyurt and Gök.un *** and morphometric analyses,including mountain front sinuosity(Smf)and drainage basin analysis,suggest variable uplift rates and tectonic forces,with an asymmetric westward-directed uplift along the ***-HC index analysis underscores rapid uplift,particularly in the western basin,signaling ongoing tectonic and geomorphic *** normalized channel steepness index(k.n)values reveal variations in erosion rates,providing insight into regional uplift patterns and k.ick.oint *** morphometric indicators collectively point to high tectonic activity along the Yeşilyurt segment,the k.le segment exhibits particularly intense activity with a dominant normal fault *** 2020 Sivrice earthquak. and the 2023 earthquak. doublet further emphasize the structural complexity of the fault system and underscore the k.FZ’s pivotal role in the active tectonics of the *** research incorporating advanced geospatial technologies is vital for improving our understanding of tectonic processes,mitigating earthquak. hazards,and enhancing seismic risk.assessments.

关键词： k.nematic analyses Morphometric analyses k.le-Yeşilyurt Fault Zone(k.FZ) East Anatolian Fault System(EAFS)

Spectral Analysis for HSS Preconditioners

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Numerical Mathematics(Theory,Methods and Applications) 2008年第1期1卷 57-77页

作者： Lung Chak.Chan Michael k. ng Nam k.u Tsing Department of Mathematics The University of Hong Kong Pokfulam Road Hong Kong Department of Mathematics Hong Kong Baptist University Kowloon Tong Hong Kong

In this paper,we are interested in HSS preconditioners for saddle point lin- ear systems with a nonzero(2,2)-th *** study an approximation of the spectra of HSS preconditioned matrices and use these results to illustrate and explain the spectra obtained from numerical examples,where the previous spectral analysis of HSS precon- ditioned matrices does not cover.

关键词： Saddle point problems iterative methods preconditioning eigenvalues

Adaptations of phytoplank.on in the Indian Ocean sector of the Southern Ocean during austral summer of 1998-2014

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Frontiers of Earth Science 2015年第4期9卷 742-752页

作者： r. k. MISHrA r. k. NAIk.N. ANIL k.MAr ESSO-National Centre for Antarctic and Ocean research Ministry of Earth Sciences (MoES) Vasco-da-Gama Goa India

This study investigates the effects of light and temperature on the surface water diatoms and chloro- phytes, phytoplank.on in the Indian Ocean sector of the Southern Ocean （SO） during the austral summer of 1998- 2014. Significant longitudinal variations in hydrographic and biological parameters were observed at the Sub tropical front （STF）, Sub Antarctic front （SAF） and Polar front （PF） along 56°E-58°E. The concentrations of total surface chlorophyll a （Chl a）, diatoms, and chlorophytes measured by the National Aeronautics Space Agency （NASA） estimated by the Sea-Viewing Wide Field-of- View Sensors （SeaWiFS）, the Moderate resolution Imaging Spectro radiometer （MODIS）, and the NASA Ocean Biological Model （NOBM） were used in the study. Variations in the concentration of total Chl a was remark.ble amongst the fronts during the study period. The contribution of diatoms to the total concentration of surface Chl a increased towards south from the STF to the PF while it decreased in the case of chlorophytes. The maximum photosynthetically active radiation （PAr） was observed at the STF and it progressively decreased to the PF through the SAF. At the PF region the contribution of diatoms to the total Chl a biomass was ≥80%. On the other hand, the chlorophytes showed a contrary distribution pattern with ≥ 70% of the total Chl a biomass recorded at the STF which gradually decreased towards the PF, mainly attributed to the temperate adaptation. This clearly reveals that the trend of diatoms increased at the STF and decreased at the SAF and the PF. Further, the trend of chlorophytes was increased at the STF, SAF and PF with a shift in the community in the frontal system of the Indian Ocean sector of the SO.

关键词： chlorophyll a diatoms chlorophytes SST,PAr Southern Ocean