نتایج جستجو برای: while for long periods
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Multiple attribute decision making models which select the best alternative out of all possible alternatives are used in different environments such as community, economy, management, army, etc. In recent years most of the performed researches in multiple attribute decision making’s field have been focused on single period evaluations while the value of attributes may not be fixing during all p...
this study purported to compare and contrast the use of self-mention and evidentials as two mtadiscourse features in opinion columns of persian and english newspapers. the theoretical basis of this study is the idea that metadiscourse features vary across cultural boundaries. for this purpose, 150 persian and 150 english opinion columns were collected based on three factors of topic, audience a...
Proteinuria in normal dogs can be produced at will by parenteral injections of dog plasma. As the plasma injections are continued the plasma protein concentration rises and at some point protein begins to appear in the urine. The level of plasma protein concentration at which proteinuria appears in normal dogs ranges from 9.6 to 10.4 gm. per cent. This may be termed the renal threshold for prot...
Suppose that A ⊆ Z is a £nite set of integers of diameter D = max A−min A. Suppose also that B ⊆ Z is such that A ⊕ B = Z, that is each n ∈ Z is uniquely expressible as a + b, a ∈ A, b ∈ B. We say then that A tiles the integers if translated at the locations B and it is well known that B must be a periodic set in this case and that the smallest period of B is at most 2D. Here we study the relat...
Investigating the variability of the spatial-temporal pattern of rainfall, which can lead to climate change, due to its strong impact, is of interest to various scientists. For this purpose, after receiving the daily precipitation data of 27 stations for the period of 60 years (2010-1951), its quality and the total monthly precipitation and statistics necessary for the continuation of the resea...
We obtained BV IC photometry of IRC−10443 in 85 different nights distributed over two years, and in addition low resolution absolute spectrophotometry and high resolution Echelle spectroscopy. Our data show that IRC −10443, which was never studied before in any detail, is a SRa variable, characterized by ∆B=1.27, ∆V=1.14 and ∆I=0.70 mag amplitudes and mean values =13.75, =11.33 and =...
accurate estimate of flood flows at selected return periods is a fundamental step in flood control and design of hydraulic structures. due to the inadequacy or unavailability of flood flow records in several western catchments of iran, traditional regional flood frequency methods lead to remarkable estimate errors, particularly for long return periods. in this research, discriminant analysis is...
Observational arguments supporting the binary explanation of the long secondary periods (LSP) phenomenon in red giants are presented. Photometry of about 1200 semiregular variables with the LSP in the Large Magellanic Cloud are analyzed using the MACHO and OGLE photometry. For about 5% of these objects additional ellipsoidal-like or eclipsing-like modulation with the same periods as the LSP is ...
according to amount of oil seeds import in iran are more than 80% of domestic needs, in this study, import comparative advantage in soybeans using rca and rsca index is calculated in 1961-2008 periods for iran and ten important importer countries. iran’s competition state is investigated. also long run relation between production and import comparative advantage index is estimated using johanse...
During visual exploration of a scene human beings can be insensitive to even large changes in the scene when the eye is executing rapid or saccadic eye movements. In this contribution, this period of saccadic suppression was exploited to hide graphics updates in immersive environments. Two experiments were conducted. In the first experiment the general sensitivity of observers to trans -saccadi...
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