نتایج جستجو برای: oscillatory zoning

تعداد نتایج: 24035  

1997
Giovanni Dimauro Sebastiano Impedovo Giuseppe Pirlo A. Salzo

In the field of Optical Character Recognition (OCR), zoning is used to extract topological information from patterns. In this paper zoning is considered as the result of an optimisation problem and a new technique is presented for automatic zoning. More precisely, local analysis of feature distribution based on Shannon’s entropy estimation is performed to determine “core” zones of patterns. An ...

Journal: :IJPRAI 2007
Cinthia Obladen de Almendra Freitas Luiz Eduardo Soares de Oliveira Flávio Bortolozzi Simone B. K. Aires

In this paper we present an alternative strategy to define zoning for handwriting recognition, which is based on nonsymmetrical perceptual zoning. The idea is to extract some knowledge from the confusion matrices in order to make the zoning process less empirical. The feature set considered in this work is based on concavities/convexities deficiencies, which are obtained by labeling the backgro...

Journal: :American journal of preventive medicine 2005
Joseph Schilling Leslie S Linton

BACKGROUND Improvements in the built environment and changes in land-use policy are promising approaches to increasing physical activity among a largely sedentary population. Opportunities for walking and cycling as part of daily life are important to increasing physical activity and improving health. Yet, local zoning codes and related land-use regulations have made it difficult to create vibr...

Journal: :Minerals 2022

Complex microstructures of zircon recrystallisation have been discovered in igneous and metamorphic zircons from the Jack Hills Metasedimentary Belt Western Australia, granitic injection complex Harris north-west Scotland. Cathodoluminescence (CL), electron backscatter diffraction (EBSD) wavelength dispersive spectroscopy (WDS) analysis reveal that studied is often characterised by (1) translat...

سالاری, محمدعلی, بومری, محمد , بیابانگرد, حبیب ا... , درگاهی, سارا,

The study area is located in the Kerman province, 10 Km north of Rabor. Geologically, the area is situated in the eastern section of Dehaj-Sarduiyeh belt which is a part of Urumieh-Dokhtar magmatic assemblage. The dykes were intruded in the Eocene pyroclastic rocks and Pliocene sedimentary units. Petrographic studies show that these rocks are andesitic in composition. Mineralogically they are c...

ترابی, قدرت , شیردشت زاده, نرگس,

Eocene volcanic rocks in NE of Ordib, have a very good exposures near and along the Turkmeni-Ordib fault. These rocks, that are situated in the inner part of the Central Iran and margin of the Yazd block, comprise trachyte, trachy-andesite and basaltic trachy-andesite. Trachy-andesite is the pervasive rock unit. Rock forming minerals of these rocks are chloritized olivine, plagioclase, pyroxene...

Bakhtiari, Behnaz, Khodami, mahnaz,

Plagioclase is the most abundant mineral in basaltic andesites in the north Gavkhouni. Olivine and pyroxene are the other rock forming mineral there. In their 3-dimensional shapes, they are unequal and varies between bladed to prolate. Plagioclase sometimes exhibit dusty texture, oscillatory zoning and sinusoid growth. Based on crystal size distribution data, the rate of crystal nucleation of p...

2006
A. M. DUNCAN

The chemical variation of clinopyroxene phenocrysts from the trachybasaltic lavas of Etna volcano is described. The phenocrysts show a limited, but distinct trend in chemical variation from calcic-augite in the hawaiites to augite in the benmoreites. The trend of this variation is unusual, being one of Mg-enrichment with differentiation of the magma. Ca shows a steady decrease in the clinopyrox...

2010
Luca Quadrifoglio Chung-Wei Shen

ADA paratransit systems are dial-a-ride services providing public transportation to disabled customers. In large metropolitan areas, these services might adopt zoning strategies to simplify their management. The objective of this research is to provide a more in-depth evaluation and comparison between centralized and decentralized zoning strategies for the city of Houston, Texas, by developing ...

زال, فرهاد, احمدی خلجی, احمد , طهماسبی, زهرا ,

Tourmaline nodules in the Mashhad granites (g2) formed of two parts: dark core and white halo which are scattered in the leucocratic granites. Petrographic studies of these parts (core, white halo and host granite) show tourmaline accumulation in core, quartz, muscovite, microcline and orthoclase accumulation in white halo and quartz, plagioclase, microcline, muscovite and biotite accumulation ...

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