نتایج جستجو برای: z frame

تعداد نتایج: 247522  

2006
Alexander Trusov Cenk Acar Andrei M. Shkel

This paper studies a design approach that yields robust vibratory MEMS gyroscopes. The design is based on multiple drive-mode resonators with incrementally spaced frequencies, distributed symmetrically around the center of a supporting frame. These resonators are structurally constrained in the tangential direction with respect to the supporting frame. In the presence of an angular rotation rat...

Journal: :asia oceania journal of nuclear medicine and biology 0
michael masoomi 1-department of nuclear medicine, farwaniya hospital, kuwait anne h mclean 2-nuclear medicine physics, queen alexandra hospital, portsmouth, uk yassine bouchareb 3-clinical physics, barts health, nhs trust, uk. will ryder 4-faculty of health science, university of sydney, sydney, australia andy robinson 5-the harley street clinic, london, uk

abstractobjective: to investigate the impact of respiratory motion on localization, and quantification lung lesions for the gross tumour volume utilizing an in-house developed auto3dreg programme and dynamic nurbs-based cardiac-torso digitised phantom (ncat). methods: respiratory motion may result in more than 30% underestimation of the suv values of lung, liver and kidney tumour lesions. the m...

This paper is a continuation of [Uniformities and covering properties for partial frames (I)], in which we make use of the notion of a partial frame, which is a meet-semilattice in which certain designated subsets are required to have joins, and finite meets distribute over these. After presenting there our axiomatization of partial frames, which we call $sels$-frames, we added structure, in th...

Journal: :Radiation Oncology (London, England) 2008
Peter Lindvall Per Bergström Per-Olov Löfroth Roger Henriksson A Tommy Bergenheim

BACKGROUND Hypofractionated radiotherapy has been used for the treatment of AVMs and brain metastases. Hypofractionation necessitates the use of a relocatable stereotactic frame that has to be applied on several occasions. The stereotactic frame needs to have a high degree of reproducibility, and patient positioning is crucial to achieve a high accuracy of the treatment. METHODS In this study...

2009
XIAONING PENG BEIJI ZOU SHU CHEN PING LUO P. LUO

Abstract. This paper investigates the problem of reconstruction of 3D human motion pose from uncalibrated monocular video sequences. Firstly, we prove that the transform between the change of Z coordinate, (dz), and the corresponding change of scale factor s, (ds), is a linear transformation under perspective camera model. Then, we locate a frame in which the human figure with three linked body...

Journal: :Computer-Aided Design 2011
Alicia Cantón L. Fernández-Jambrina E. Rosado María

In the Bézier formalism, an arc of a conic is a rational curve of degree 2 with control polygon {P, Q, R} for which the weights can be normalized to {1, w, 1}. The parametrization of the conic arc is C(t) = (1 − t) 2 P + 2wt(1 − t)Q + t 2 R (1 − t) 2 + 2wt(1 − t) + t 2 , t ∈ [0, 1]. Abstract Synthetic derivation of closed for-mulae of the geometric characteristic of a conic given in Bézier form...

2005
D. Lutz E. Valiante E. Sturm R. Genzel L. J. Tacconi M. D. Lehnert A. Sternberg A. J. Baker

Using the Infrared Spectrograph (IRS) on board the Spitzer Space Telescope, we have obtained rest frame mid-infrared spectroscopy of two bright submillime-ter galaxies. SMMJ02399-0136 at z=2.81 shows a superposition of PAH emission features and a mid-infrared continuum, indicating significant and roughly equal contributions to its bolometric luminosity from star formation and from a Compton-thi...

2006
P. Severgnini

The optical rest–frame sizes of 10 of the most massive (∼5×1011h70−2M⊙) galaxies found in the near–infrared MUNICS survey at 1.2<z<1.7 are analysed. Sizes were estimated both in the J and K’ filters. These massive galaxies are at least a factor of 4 −1.0 (±1 σ) smaller in the rest–frame V–band than local counterparts of the same stellar mass. Consequently, the stellar mass density of these obje...

1997
DAVID HUGHES JAMES DUNLOP

In this paper we briefly describe a ‘key’ survey at submm wavelengths which we are currently conducting to address some of the most important questions in cosmology how, at what epoch and over what period of time did massive galaxies form at high-redshift? The primary motivation for undertaking surveys of high-z galaxies at submm wavelengths is the expectation, which has still to be proved, tha...

2008
Elisabetta Valiante Reinhard Genzel Andreas M. Burkert

Using the Infrared Spectrograph (IRS) on board the Spitzer Space Telescope, we have obtained rest frame mid-infrared spectroscopy of two bright submillimeter galaxies. SMMJ02399-0136 at z=2.81 shows a superposition of PAH emission features and a mid-infrared continuum, indicating significant and roughly equal contributions to its bolometric luminosity from star formation and from a Compton-thic...

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