نتایج جستجو برای: field

تعداد نتایج: 786806  

2002
L. Bonora D. Mamone M. Salizzoni

We continue the analysis of Vacuum String Field Theory in the presence of a constant B field. In particular we give a proof of the ratio of brane tensions is the expected one. On the wake of the recent literature we introduce wedge–like states and orthogonal projections. Finally we show a few examples of the smoothing out effects of the B field on some of the singularities that appear in VSFT.

2003
Keita Takahashi Takeshi Naemura Hiroshi Harashima

This paper focuses on the sampling problem in light field rendering (LFR) that is a fundamental approach to image based rendering. Quality of LFR depends on a light ray database generated from pre-acquired images, since image synthesis is a process of gathering appropriate light ray data from the database. For improving the quality, interpolation of light ray data is effective. It is based on a...

1992
E. Aldrovandi

We study the following problem: can a classical sln Toda field theory be represented by means of free bosonic oscillators through a Drinfeld–Sokolov construction? We answer affirmatively in the case of a cylindrical space–time and for real hyperbolic solutions of the Toda field equations. We establish in fact a one–to–one correspondence between such solutions and the space of free left and righ...

2016
Dirk Englund Christopher Foy

The nitrogen vacancy center (NV) is a promising single spin system in diamond with optical polarization, readout and optically detected magnetic resonances (ODMR). The NV has been shown to be a sensitive magnetometer at room temperature. In particular, owing to their small size, NV centers in nanocrystals (nanodiamonds) offer magnetic field imaging with high spatial resolution. Competitive magn...

2009
W. Struyve

The deBroglie-Bohm pilot-wave theory is an interpretation of quantum theory in which the observer plays no fundamental role. In a pilot-wave theory, quantum systems are not only described by the state vector, but also by some additional variables. These additional variables, also called beables, can be particle positions, field configurations, strings, etc. In this paper we focus our attention ...

Pakseresht, Sedigheh, Seyedeh Marzieh, ,

مشاوره فرآیند برقراری ارتباط است که در طی آن بین مشاور با فرد یا زوج یا یک گروه ارتباط برقرار می شود و مشاور اطلاعات واقعی را به منظور راه گشایی در اختیار طرف مقابل گذاشته و در تصمیم گیری به آنها کمک می نماید. یکی از افراد تیم بهداشتی باروری که در انجام فرایند مشاوره نقش فعال و بسزایی دارد، ماما است. ماما در عرصه مشاوره توانسته است قدم بزرگی را در طب پیشگیری جامعه در سطح اولیه به خود اختصاص دهد...

ژورنال: ژئومکانیک نفت 2019

3D and 4D geomechanical can be time-consuming to build and calibrate. However, once such a model is built, it is relative straightforward to use this model for various field development and management applications. In so doing, the return on the initial investment of time and effort in the creation of a 4D geomechanical model can be substantial. I present a case study where a 4D geomechanical m...

J. Ayatollahi

Background: Lower lung field tuberculosis is atypical presentation of pulmonary tuberculosis which often causes confusion in diagnosis. HIV/AIDS epidemic has considerably increased its incidence. This study was designed to identify the prevalence and different clinical conditions of lung tuberculosis in conjunction with its common clinical and radiological presentations and its treatment. Metho...

  The knowledge related to the methodology of the field trial study as a type of intervention studies, yet for many of our researchers is not fully understood. The aim of the current study was a better understanding of conducting this type of research. Field trial studies are done on healthy individuals and aim to prevent. These types of studies such as clinical trials are performed on both i...

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