نتایج جستجو برای: dw

تعداد نتایج: 5506  

Journal: :Revista Mexicana De Astronomia Y Astrofisica 2022

We present new observations of the cataclysmic variable DW Cancri, after system recovered from a low state. performed power spectrum analysis that reveals clear signal 38 min spin period in our photometric data. Our spectroscopic search was consistent with studies before state, showing orbital and modulations. Doppler Tomography study exhibits disc structure an enhanced asymmetric region, possi...

2015
Abdul J. Cheruth Shyam S. Kurup Sreeramanan Subramaniam

The present study was carried out to assess the status of various hormones responsible for the flower induction of Nagal, Lulu, and Khalas date palm varieties in UAE. The nonenzymatic antioxidant compounds and the antioxidant enzymatic activities at preflowering, flowering, and postflowering stages of the date palm varieties were quantified. The ABA and zeatin concentrations were found to be si...

Journal: :Physical review letters 2011
L O'Brien D Petit E R Lewis R P Cowburn D E Read J Sampaio H T Zeng A-V Jausovec

Domain wall (DW) pinning in ferromagnetic nanowires is in general a complex process. Distortions of the DW shape make quantitative agreement between modeling and experiment difficult. Here we demonstrate pinning using nanometer scale localized stray fields. This type of interaction gives well-characterized, tailorable potential landscapes that do not appreciably distort the DW. Our experimental...

2016
Neveen ElGamal Ali El-Bastawissy Galal H. Galal-Edeen

In the past few years, the data warehouse (DW) has regained experts’ interest due to the paradigm shift from data storages to data analysis. During the development of DWs data passes through a number of transformations and are staged in multiple storages which might lead to data corruption and/or manipulation. Hence, testing DWs is a vital stage in the DW development life cycle. In this paper, ...

2001
Adriana Marotta Regina Motz Raúl Ruggia

Web Data Warehouses have been introduced to enable the analysis of integrated Web data. One of the main challenges in these systems is to deal with the volatile and dynamic nature of Web sources. In this work we address the effects of adding/removing/changing Web sources and data items to the Data Warehouse (DW) schema. By managing source evolution we mean the automatic propagation of these cha...

2006
J. Deng R. A. Omary A. C. Larson

Introduction Diffusion-weighted MRI (DWI) provides a non-invasive method for in vivo evaluation of tissue water mobility. Most DWI studies employ single-shot DWEPI techniques which can suffer severe artifacts and image distortion in abdominal imaging applications. Multi-shot TSE-based DW-PROPELLER [1] may overcome these limitations. DW-PROPELLER for brain [2] and abdominal [3] imaging has demon...

Journal: :AJNR. American journal of neuroradiology 2008
Z W Zhang L J Song Q F Meng Z P Li B N Luo Y H Yang Z Pei

3D diffusion-weighted steady-state free precession imaging (3D DW-SSFP) with isotropic resolution was performed to delineate structures of the human lumbosacral plexus (LSP). 3D DW-SSFP clearly revealed detailed anatomy of the LSP and its branches. Our data suggest that the sequence based on 3D DW-SSFP can be used for high-resolution MR imaging of the peripheral nervous system.

2017
Ettaoufik Abdelaziz Mohammed Ouzzif

The data warehouses (DW) are proposed to collect and store heterogeneous and bulky data. They represent a collection of thematic, integrated, non-volatile and histories data. They are fed from different data sources through transactional queries and offer analytical data through decisional queries. Generally, the decisional queries execution cost on large tables is very high. Reducing this cost...

2011
Z. Z. Sun J. Schliemann P. Yan

We investigate current-driven domain wall (DW) propagation in magnetic nanowires in the framework of the modified Landau-Lifshitz-Gilbert equation with both adiabatic and nonadiabatic spin torque (AST and NAST) terms. By employing a simple analytical model, we can demonstrate the essential physics that any small current density can drive the DW motion along a uniaxial anisotropy nanowire even i...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید