2. Soma vision – new possibilities in computer treatment planning

The SomaVision workstation is an advanced clinical contouring tool and plan approval for CadPlan. Imaging and graphical presentation are very important in treatment planning process because final conclusion result are analyzed on the base of contoured body structures. Three dimensional reconstructions in ail planes enable to visualize treated region, analyze target relation to surrounding tissues and select the appropriate treatment technique.Since 1999 the SomaVision has been utilized in Center of Oncology-Institute in Gliwice. It is an advanced treatment planning preparation and plan approval workstation for physicians. It offers vide range of ZD and 3D graphical tools to support the definition of anatomical structures during contouring (interactive connection with CadPlan). In our Institute SomaVision workstations are installed in all departments related to Treatment Planning Unit in order to facilitate important but also very time consuming task of organ outlining.The aim of this gaper is to present the benefits of SomaVision programme used in routine Treatment Planning Unit practice. On the base of Demo Patients two treatment planning preparation procedures:-in CadP(an (contouring option) – in SomaVision are presented.Our experience with SomaVision shows that this program facilitates work in Treatment Planning Unit by supporting graphical tools in organ outlining

On Binary Matroid Minors and Applications to Data Storage over Small Fields

Locally repairable codes for distributed storage systems have gained a lot of interest recently, and various constructions can be found in the literature. However, most of the constructions result in either large field sizes and hence too high computational complexity for practical implementation, or in low rates translating into waste of the available storage space. In this paper we address this issue by developing theory towards code existence and design over a given field. This is done via exploiting recently established connections between linear locally repairable codes and matroids, and using matroid-theoretic characterisations of linearity over small fields. In particular, nonexistence can be shown by finding certain forbidden uniform minors within the lattice of cyclic flats. It is shown that the lattice of cyclic flats of binary matroids have additional structure that significantly restricts the possible locality properties of $\mathbb{F}_{2}$-linear storage codes. Moreover, a collection of criteria for detecting uniform minors from the lattice of cyclic flats of a given matroid is given, which is interesting in its own right.Comment: 14 pages, 2 figure

N∗N^{\bf *} decays to NωN\omega from new data on γp→ωp\gamma p\to \omega p

Data on the reaction $\gamma p\to \omega p$ with $\omega\to\pi^0\gamma$, taken with unpolarized or polarized beams in combination with an unpolarized or polarized proton-target, were analyzed within the Bonn-Gatchina (BnGa) partial wave analysis. Differential cross sections, several spin density matrix elements, the beam asymmetry $\Sigma$, the normalized helicity difference $E$, and the correlation $G$ between linear photon and longitudinal target polarization were included in a large data base on pion and photo-induced reactions. The data on $\omega$ photoproduction are used to determine twelve $N^*\to N\omega$ branching ratios; most of these are determined for the first time.Comment: 6 pages, 4 figures, 2 table

Visualização de dados de imagens de sensoriamento remoto.

Resumo: Geralmente, os dados de sensoriamento remoto são representados em imagens que reproduzem feições da superfície terrestre. Entretanto, imagens são compostas por dados quantitativos multivariados que podem ser trabalhados de diversas formas para produzir visualizações diferentes das reproduções pictóricas tradicionais. Dados que podem parecer sem valor, como das áreas cobertas por nuvens, podem revelar-se fonte de importante informação para o planejamento de trabalhos futuros. O Brasil tem grande importância na produção agrícola mundial e as culturas mais importantes no país são a soja, o milho e a cana-de-açúcar, que ocuparam 27,7, 15,9 e 8,7 milhões de hectares, respectivamente, na safra 2012/2013. Aproximadamente 40% desta produção se localiza em São Paulo, Paraná, Santa Catarina e Rio Grande do Sul. Imagens de satélite mostram potencial na estimativa de áreas ocupadas pela agricultura de larga escala. Entretanto, para que se possa obter imagens úteis é preciso que não haja nuvens, o que não é comum nos períodos chave dentro do calendário agrícola dessas culturas na região estudada. Obter imagens livres de nuvens ainda é um grande desafio para o monitoramento da agricultura em escala estadual ou nacional. Este trabalho objetivou demonstrar que o tratamento gráfico de dados oriundos de imagens de sensoriamento remoto pode produzir resultados úteis. Para tanto, foi analisada a frequência de imagens livres de nuvens sobre estados ou mesorregiões, ao longo dos meses, com base em uma série temporal de 2000 a 2013, a partir de dados obtidos pelo sensor MODIS e extraídos utilizando uma rotina do R. Abstract: Our goal was to demonstrate that the graph data processing of remote sensing images can produce useful results. We analyzed the frequency of cloud free images over Brazilian states, using a time series from 2000 to 2013, extracted from the MODIS sensor data and using a routine R

About the strength of correlation effects in the electronic structure of iron

The strength of electronic correlation effects in the spin-dependent electronic structure of ferromagnetic bcc Fe(110) has been investigated by means of spin and angle-resolved photoemission spectroscopy. The experimental results are compared to theoretical calculations within the three-body scattering approximation and within the dynamical mean-field theory, together with one-step model calculations of the photoemission process. This comparison indicates that the present state of the art many-body calculations, although improving the description of correlation effects in Fe, give too small mass renormalizations and scattering rates thus demanding more refined many-body theories including non-local fluctuations.Comment: 4 pages, 4 figure

Origin of the reduced exchange bias in epitaxial FeNi(111)/CoO(111) bilayer

We have employed Soft and Hard X-ray Resonant Magnetic Scattering and Polarised Neutron Diffraction to study the magnetic interface and the bulk antiferromagnetic domain state of the archetypal epitaxial Ni$_{81}$Fe$_{19}$(111)/CoO(111) exchange biased bilayer. The combination of these scattering tools provides unprecedented detailed insights into the still incomplete understanding of some key manifestations of the exchange bias effect. We show that the several orders of magnitude difference between the expected and measured value of exchange bias field is caused by an almost anisotropic in-plane orientation of antiferromagnetic domains. Irreversible changes of their configuration lead to a training effect. This is directly seen as a change in the magnetic half order Bragg peaks after magnetization reversal. A 30 nm size of antiferromagnetic domains is extracted from the width the (1/2 1/2 1/2) antiferromagnetic magnetic peak measured both by neutron and x-ray scattering. A reduced blocking temperature as compared to the measured antiferromagnetic ordering temperature clearly corresponds to the blocking of antiferromagnetic domains. Moreover, an excellent correlation between the size of the antiferromagnetic domains, exchange bias field and frozen-in spin ratio is found, providing a comprehensive understanding of the origin of exchange bias in epitaxial systems.Comment: 8 pages, 5 figures, submitte

Q value and half-life of double-electron capture in Os-184

Os-184 has been excluded as a promising candidate for the search of neutrinoless double-electron capture. High-precision mass measurements with the Penning-trap mass spectrometer TRIGA-TRAP resulted in a marginal resonant enhancement with = -8.89(58) keV excess energy to the 1322.152(22) keV 0+ excited state in W-184. State-of-the-art energy density functional calculations are applied for the evaluation of the nuclear matrix elements to the excited states predicting a strong suppression due to the large deformation of mother and daughter states. The half-life of the transition in Os-184 exceeds T_{1/2} > 1.3 10^{29} years for an effective neutrino mass of 1 eV.Comment: accepted in Phys. Rev.

2. Soma vision – new possibilities in computer treatment planning

The SomaVision workstation is an advanced clinical contouring tool and plan approval for CadPlan. Imaging and graphical presentation are very important in treatment planning process because final conclusion result are analyzed on the base of contoured body structures. Three dimensional reconstructions in ail planes enable to visualize treated region, analyze target relation to surrounding tissues and select the appropriate treatment technique.Since 1999 the SomaVision has been utilized in Center of Oncology-Institute in Gliwice. It is an advanced treatment planning preparation and plan approval workstation for physicians. It offers vide range of ZD and 3D graphical tools to support the definition of anatomical structures during contouring (interactive connection with CadPlan). In our Institute SomaVision workstations are installed in all departments related to Treatment Planning Unit in order to facilitate important but also very time consuming task of organ outlining.The aim of this gaper is to present the benefits of SomaVision programme used in routine Treatment Planning Unit practice. On the base of Demo Patients two treatment planning preparation procedures:-in CadP(an (contouring option) – in SomaVision are presented.Our experience with SomaVision shows that this program facilitates work in Treatment Planning Unit by supporting graphical tools in organ outlining

The formation of Uranus and Neptune among Jupiter and Saturn

The outer giant planets, Uranus and Neptune, pose a challenge to theories of planet formation. They exist in a region of the Solar System where long dynamical timescales and a low primordial density of material would have conspired to make the formation of such large bodies ($\sim$ 15 and 17 times as massive as the Earth, respectively) very difficult. Previously, we proposed a model which addresses this problem: Instead of forming in the trans-Saturnian region, Uranus and Neptune underwent most of their growth among proto-Jupiter and -Saturn, were scattered outward when Jupiter acquired its massive gas envelope, and subsequently evolved toward their present orbits. We present the results of additional numerical simulations, which further demonstrate that the model readily produces analogues to our Solar System for a wide range of initial conditions. We also find that this mechanism may partly account for the high orbital inclinations observed in the Kuiper belt.Comment: Submitted to AJ; 38 pages, 16 figure