نتایج جستجو برای: with 007 slope approximations during 1948
تعداد نتایج: 9797075 فیلتر نتایج به سال:
This paper presents a new depth-integrated non-hydrostatic finite element model for simulating wave propagation, breaking and runup using combination of discontinuous continuous Galerkin methods. The formulation decomposes the equations into hydrostatic parts. part is solved with method to allow simulation flows, runup. led Poisson type equation, where pressure modeling propagation transformati...
This study aimed to identify brain regions with the least decreased cerebral blood flow (CBF) and their relationship to physiological parameters during human non-rapid eye movement (NREM) sleep. Using [(15)O]H(2)O positron emission tomography, CBF was measured for nine normal young adults during nighttime. As NREM sleep progressed, mean arterial blood pressure and whole brain mean CBF decreased...
DURING the past ten years it has been suggested that the classical form of the Golgi apparatus is artificial and results from the distortion of certain lipoidal bodies during cytological fixation (Baker, 1944, 1949; Thomas, 1947, 1948; Foster, 1947; Cain, 1948). This view has not been substantiated by a study of the apparatus in the endocrine and exocrine cells of the pancreas of the mouse (Lac...
language learning courseware has been receiving growing attention by english educators since its advent. a variety of softwares have been designed by software designers and resorted to by language educators to supplement language textbooks. this experimental study investigated how the application of computerized version of language textbooks and the reception of the entire course through comput...
The history of the theory and practice of quantization dates to 1948, although similar ideas had appeared in the literature as long ago as 1898. The fundamental role of quantization in modulation and analog-to-digital conversion was first recognized during the early development of pulsecode modulation systems, especially in the 1948 paper of Oliver, Pierce, and Shannon. Also in 1948, Bennett pu...
We study the control of modulational instability and pattern formation in a nonlinear dissipative feedback system with a periodic modulation of the material refractive index. We use a one-dimensional photonic lattice in a single-mirror feedback configuration and identify three mechanisms for pattern control: bandgap suppression of instability modes, periodicity induced pattern modes, and orient...
We present some numerical results obtained from a simple individual-based model that describes clustering of organisms caused by competition. Our aim is to show that, even when a deterministic description developed for continuum models predicts no pattern formation, an individual-based model displays well-defined patterns, as a consequence of fluctuation effects caused by the discrete nature of...
The laboratory diagnosis of pregnancy, initiated by the discovery of the Aschheim-Zondek reaction, remained for a long time a comparatively seldom used procedure, performed only on selected cases. The original method and its later modifications (the Friedman test, the quick hyperaemia test) need comparatively expensive test animals. Moreover, the performance of the test and reading of the resul...
Visual search for compound patterns was examined in observers aged 6, 8, 10, and 22 years. The main question was whether age-related improvement in search rate (response time slope over number of items) was different for patterns defined by short- versus long-range spatial relations. Perceptual access to each type of relation was varied by using elements of same contrast (easy to access) or mix...
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