نتایج جستجو برای: area matrix
تعداد نتایج: 934445 فیلتر نتایج به سال:
Background and purpose: Sclera and choroid as external and middle tunic of the eye, originate from the mesenchyme surrounding the optic cup. Neural crest cells have major contribution in mesenchyme development. Main part of transmitter signals in eyes development are extracellular matrix components and cell surface glycoconjugates. The purpose of this study was to recognize extracellular m...
This paper describes Risk Based Inspection (RBI) methodology which is constructed in one of the units of Tehran Oil Refinery, (ISOMAX unit). The result of RBI Execution is a risk matrix which is constructed with Probability of Failure and Consequence of Failure. To define risk, probability of failure and consequence of failure and active damage mechanism were recognized. Riskwise software was a...
The intensive use of groundwater resources has often affected ground water levels in many parts of the world. Therefore, the strategic management of water resources for better planning of water resources seems necessary, In this study SWOT strategy was applied for strategic management of water resources in Abarkouh plain. In order to launch this strategy, we first extracted the weaknesses, stre...
the object of this paper is to establish a summability factor theorem for summabilitya, , k 1 k where a is the lower triangular matrix with non-negative entries satisfying certain conditions.
we obtain sufficient conditions for the series σanλn to be absolutely summable of order k by atriangular matrix.
it is proved that by using bounds of eigenvalues of an interval matrix, someconditions for checking positive de niteness and stability of interval matricescan be presented. these conditions have been proved previously with variousmethods and now we provide some new proofs for them with a unity method.furthermore we introduce a new necessary and sucient condition for checkingstability of interv...
Ordering of subclasses of trees by algebraic connectivity is a very active area of research. Let G = (V,E) be a simple undirected graph on n vertices. The Laplacian matrix of G is the n × n matrix L (G) = D (G) − A (G) where A (G) is the adjacency matrix and D (G) is the diagonal matrix of vertex degrees. It is well known that L (G) is a positive semidefinite matrix and that (0, e) is an eigenp...
Drought is one of the most important weather-induced phenomena which may have severe impacts on different areas such as agriculture, economy, energy production, and society. A number of drought indices have been introduced and used in various countries to date. In the current study, four meteorological drought indices including Percent of Normal Precipitation Index (PNPI), Standard Index of Ann...
Garnet bearing staurolite schists comprise an important part of regional metamorphic succession in the Hamedan area (north of the Sanandaj-Sirjan zone). These rocks contain staurolite and garnet porphyroblats that lie in a matrix which is composed of biotite, muscovite and quartz. The staurolites in Fe-rich and show little chemical composition diversities. Almandin is the most important compone...
The study area is located at 220 km southwest of Mashhad and 80 km south of Neyshabur and is situated between 58° 40' 30" to 58° 43' 30" E longitudes and 35° 47' 30" to 35° 52' 00" N latitudes. The study area is part of Sabzevar zone. The lithology of the area consists mainly of volcanic rocks with trachyte, trachy andesite, and basaltic trachy andesite composition and in some parts has been su...
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