نتایج جستجو برای: pre
تعداد نتایج: 311802 فیلتر نتایج به سال:
It is shown that the “hit-and-run” algorithm for sampling from a convex body K (introduced by R.L. Smith) mixes in time O(nR/r), where R and r are the radii of the inscribed and circumscribed balls of K. Thus after appropriate preprocessing, hit-andrun produces an approximately uniformly distributed sample point in time O(n), which matches the best known bound for other sampling algorithms. We ...
BACKGROUND Nulliparity is a major risk factor of preeclampsia investigated in numerous trials of its prevention. OBJECTIVE We aimed to assess whether these trials considered nulliparity in subject selection or analysis of results. SEARCH STRATEGY 01 April 2013 search of MEDLINE via PubMed, EMBASE and the Cochrane Library. 01 April 2013 search of trials registered in Clinicaltrials.gov. SE...
The optimal linear preprocessor for classifying two zero-mean Gaussian discrete-time signals which have been corrupted by additive zero-mean Gaussian noise is studied. Conditions for existence of the optimal linear preprocessor that achieves the performance of the likelihood ratio test for the noisy signals are given and the preprocessor is explicitly derived.
Preeclampsia (PE) is a life-threatening complication of pregnancy. The precise origin of PE remains obscure. Placenta has been considered to play a central role in its pathology. Here we present a brief overlook of placenta related pathogenic factors that might be involved in the pathology changes of PE. A series of factors that correlated with placenta pathology have been regarded attributed t...
A narrow-band-based adaptive level set method is proposed for mesh evolution in this paper. In the preprocessing step, the portions of the mesh with high curvature are detected and clustered as fine geometric details. Then the fine grids with optimal orientations are defined for each detected portions, while the coarse grid is chosen for global evolution. The solutions on different scale grids ...
One of the most interesting tasks of scene analysis is the reconstruction problem, which is the problem of finding a three-dimensional description of a scene from two or more projections. When the scene is assumed to be composed of man-made objects bounded by quadric surfaces, the reconstruction process is simplified if the border lines in each projection are given by means of straight-line seg...
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v List of Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ix List of Figures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xi Chapter 1: Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1.1 Pr...
a male, was born at 5 a.m. on the 30th August, 1934. The delivery of both the_ children was quite normal* the presentation being occipito-anterior. The placenta, which was single, was delivered fifteen minutes after the third child. All the children were quite healthy. The first female child weighed six pounds and the second and third males weighed six and a half pounds each. In the accompanyin...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید