نتایج جستجو برای: inversion time
تعداد نتایج: 1927792 فیلتر نتایج به سال:
We give Lambek-Carlitz type characterization for completely multiplicative reduced incidence functions in Möbius categories of full bi-nomial type. The q-analog of the Lambek-Carlitz type characterization of exponential series is also established. 1. An arithmetical function f is called multiplicative if (1.1) f (mn) = f (m)f (n) whenever (m, n) = 1 and it is called completely multiplicative if...
Given fragments from multiple genomes, we will show how to find an optimal local chain of colinear non-overlapping fragments in sub-quadratic time, using methods from computational geometry. A variant of the algorithm finds all significant local chains of colinear nonoverlapping fragments. The local chaining algorithm can be used in a variety of problems in comparative genomics: The identificat...
Background Late gadolinium enhancement (LGE) is a well-established technique that generates excellent contrast between normal and pathologic myocardium. Selecting the correct inversion time (TI) for nulling normal myocardium is essential for good quality images and accurate diagnosis. The Look-Locker (LL) TI scout is commonly used for TI estimation but is subjective and requires a long breathho...
BACKGROUND AND PURPOSE Synthetic MR imaging enables the creation of various contrast-weighted images including double inversion recovery and phase-sensitive inversion recovery from a single MR imaging quantification scan. Here, we assessed whether synthetic MR imaging is suitable for detecting MS plaques. MATERIALS AND METHODS Quantitative and conventional MR imaging data on 12 patients with ...
The imitation of spoken stop consonants by an articulatory synthesizer using only general learning principles addresses significant issues in speech inversion and speech acquisition. Stop consonants are relatively large, complex acoustic events resulting from discrete articulations, so inversion based on the use of small time windows or based on the minimisation of average articulatory error ac...
Time-lapse seismic data are widely used for monitoring timevariant subsurface changes. Conventional analysis provides qualitative information by comparing results from consecutive surveys, whereas waveform inversion can retrieve quantitative estimates of reservoir properties through seismic waveform fitting. The quantitative evaluation of the physical parameters obtained by waveform inversion a...
the direct way to access the petrophysical property of hydrocarbon reservoir is based on well data but due to its high cost, the seismic data has been used to obtain these parameters. for this purpose, many different methods are available and each has its own advantages and limitations. from these methods the seismic inversion is the best tool to study the reservoir characterization. the outcom...
A constrained nonlinear optimization method based on nonlinear programming techniques has been applied to map geometry of bedrock of sedimentary basins by inversion of gravity anomaly data. In the inversion, the applying model is a 2-D model that is composed of a set of juxtaposed prisms whose lower depths have been considered as unknown model parameters. The applied inversion method is a nonli...
Reservoir characterization has a leading role in the reservoir geophysics and reservoir management. Since the interests of the reservoir geophysics and reservoir managements are the elastic properties and reservoir properties of the subsurface rock for their purposes, a robust method is required for converting seismic data into elastic properties. Accordingly, by employing a rock physics model ...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید