PTPT symmetric non-selfadjoint operators, diagonalizable and non-diagonalizable, with real discrete spectrum

Consider in $L^2(R^d)$, $d\geq 1$, the operator family $H(g):=H_0+igW$. \ds H_0= a^\ast_1a_1+... +a^\ast_da_d+d/2 is the quantum harmonic oscillator with rational frequencies, $W$ a $P$ symmetric bounded potential, and $g$ a real coupling constant. We show that if $|g|<\rho$, $\rho$ being an explicitly determined constant, the spectrum of $H(g)$ is real and discrete. Moreover we show that the operator \ds H(g)=a^\ast_1 a_1+a^\ast_2a_2+ig a^\ast_2a_1 has real discrete spectrum but is not diagonalizable.Comment: 20 page

Az előszerződés, mint a jövőbeli ismételt foglalkoztatás jogi keretbe foglalt ígérete

Abstract: In this paper a methodology is proposed to elaborate landslide activity maps through the use of PS (Persistent Scatterer) data. This is illustrated through the case study of Tramuntana Range in the island of Majorca (Spain), where ALOS (Advanced Land Observing Satellite) images have been processed through a Persistent Scatterer Interferometry (PSI) technique during the period of 2007–2010. The landslide activity map provides, for every monitored landslide, an assessment of the PS visibility according to the relief, land use, and satellite acquisition parameters. Landslide displacement measurements are projected along the steepest slope, in order to compare landslide velocities with different slope orientations. Additionally, a ground motion activity map is also generated, based on active PS clusters not included within any known landslide phenomenon, butRemote Sens. 2013, 5 6199 even moving, potentially referred to unmapped landslides or triggered by other kinds o

Elliptic and hyperelliptic magnetohydrodynamic equilibria

The present study is a continuation of a previous one on "hyperelliptic" axisymmetric equilibria started in [Tasso and Throumoulopoulos, Phys. Plasmas 5, 2378 (1998)]. Specifically, some equilibria with incompressible flow nonaligned with the magnetic field and restricted by appropriate side conditions like "isothermal" magnetic surfaces, "isodynamicity" or P + B^2/2 constant on magnetic surfaces are found to be reducible to elliptic integrals. The third class recovers recent equilibria found in [Schief, Phys. Plasmas 10, 2677 (2003)]. In contrast to field aligned flows, all solutions found here have nonzero toroidal magnetic field on and elliptic surfaces near the magnetic axis.Comment: 9 page

The effect of spontaneous collapses on neutrino oscillations

We compute the effect of collapse models on neutrino oscillations. The effect of the collapse is to modify the evolution of the `spatial' part of the wave function, which indirectly amounts to a change on the flavor components. In many respects, this phenomenon is similar to neutrino propagation through matter. For the analysis we use the mass proportional CSL model, and perform the calculation to second order perturbation theory. As we will show, the CSL prediction is very small - mainly due to the very small mass of neutrinos - and practically undetectable.Comment: 24 pages, RevTeX. Updated versio

Determination on the carrying capacity in the Main Trail of Cicuta’s ARIE, Volta Redonda-Barra Mansa, Rio de Janeiro, Brasil

O presente estudo foi realizado na ARIE da Floresta da Cicuta, Barra Mansa e Volta Redonda (RJ). Teve como objetivo determinar e avaliar o potencial de gestão e a Capacidade de Carga Turística da Trilha Principal da ARIE dessa UC, gerando um valor estimado do número de visitantes por dia, complementando o Plano de Manejo da referida ARIE. Para a determinação de capacidade de carga turística da trilha principal da ARIE foi aplicado o método proposto por Cifuentes (1992). O presente estudo demonstrou que a trilha está, relativamente, bem alinhada com o SNUC. A Capacidade de Carga Efetiva encontrada para a trilha foi de 208 visitas x dia-1. Esse estudo poderá contribuir com o processo de atualização do Plano de Manejo da ARIE, sendo complementado com outros estudos.The present study was carried out in the ARIE of the Cicuta Forest, Barra Mansa and Volta Redonda (RJ). The objective was to determine the tourism tarrying capacity of the Main Trail of the ARIE, generating an estimated number of visitors per day, and to evaluate the management potential to complement the Management Plan. The method proposed by Cifuentes (1992) was applied to determine the tourist carrying capacity. The present study demonstrated that the trail is relatively well aligned with the National System of Protected Areas (SNUC). The Effective Carrying Capacity was 208 visitors x day-1. This study may contribute to the process of updating the ARIE Management Plan, but should be complemented with other studies (Acceptable Exchange Limit - AEL, Visitor Impact Management - VIM, etc.).Facultad de Ciencias Agrarias y Forestale

Determination on the carrying capacity in the Main Trail of Cicuta’s ARIE, Volta Redonda-Barra Mansa, Rio de Janeiro, Brasil

O presente estudo foi realizado na ARIE da Floresta da Cicuta, Barra Mansa e Volta Redonda (RJ). Teve como objetivo determinar e avaliar o potencial de gestão e a Capacidade de Carga Turística da Trilha Principal da ARIE dessa UC, gerando um valor estimado do número de visitantes por dia, complementando o Plano de Manejo da referida ARIE. Para a determinação de capacidade de carga turística da trilha principal da ARIE foi aplicado o método proposto por Cifuentes (1992). O presente estudo demonstrou que a trilha está, relativamente, bem alinhada com o SNUC. A Capacidade de Carga Efetiva encontrada para a trilha foi de 208 visitas x dia-1. Esse estudo poderá contribuir com o processo de atualização do Plano de Manejo da ARIE, sendo complementado com outros estudos.The present study was carried out in the ARIE of the Cicuta Forest, Barra Mansa and Volta Redonda (RJ). The objective was to determine the tourism tarrying capacity of the Main Trail of the ARIE, generating an estimated number of visitors per day, and to evaluate the management potential to complement the Management Plan. The method proposed by Cifuentes (1992) was applied to determine the tourist carrying capacity. The present study demonstrated that the trail is relatively well aligned with the National System of Protected Areas (SNUC). The Effective Carrying Capacity was 208 visitors x day-1. This study may contribute to the process of updating the ARIE Management Plan, but should be complemented with other studies (Acceptable Exchange Limit - AEL, Visitor Impact Management - VIM, etc.).Facultad de Ciencias Agrarias y Forestale

Determination on the carrying capacity in the Main Trail of Cicuta’s ARIE, Volta Redonda-Barra Mansa, Rio de Janeiro, Brasil

O presente estudo foi realizado na ARIE da Floresta da Cicuta, Barra Mansa e Volta Redonda (RJ). Teve como objetivo determinar e avaliar o potencial de gestão e a Capacidade de Carga Turística da Trilha Principal da ARIE dessa UC, gerando um valor estimado do número de visitantes por dia, complementando o Plano de Manejo da referida ARIE. Para a determinação de capacidade de carga turística da trilha principal da ARIE foi aplicado o método proposto por Cifuentes (1992). O presente estudo demonstrou que a trilha está, relativamente, bem alinhada com o SNUC. A Capacidade de Carga Efetiva encontrada para a trilha foi de 208 visitas x dia-1. Esse estudo poderá contribuir com o processo de atualização do Plano de Manejo da ARIE, sendo complementado com outros estudos.The present study was carried out in the ARIE of the Cicuta Forest, Barra Mansa and Volta Redonda (RJ). The objective was to determine the tourism tarrying capacity of the Main Trail of the ARIE, generating an estimated number of visitors per day, and to evaluate the management potential to complement the Management Plan. The method proposed by Cifuentes (1992) was applied to determine the tourist carrying capacity. The present study demonstrated that the trail is relatively well aligned with the National System of Protected Areas (SNUC). The Effective Carrying Capacity was 208 visitors x day-1. This study may contribute to the process of updating the ARIE Management Plan, but should be complemented with other studies (Acceptable Exchange Limit - AEL, Visitor Impact Management - VIM, etc.).Facultad de Ciencias Agrarias y Forestale

Measurement of the muon decay spectrum with the ICARUS liquid Argon TPC

Examples are given which prove the ICARUS detector quality through relevant physics measurements. We study the muon decay energy spectrum from a sample of stopping muon events acquired during the test run of the ICARUS T600 detector. This detector allows the spatial reconstruction of the events with fine granularity, hence, the precise measurement of the range and dE/dx of the muon with high sampling rate. This information is used to compute the calibration factors needed for the full calorimetric reconstruction of the events. The Michel rho parameter is then measured by comparison of the experimental and Monte Carlo simulated muon decay spectra, obtaining rho = 0.72 +/- 0.06(stat.) +/- 0.08(syst.). The energy resolution for electrons below ~50 MeV is finally extracted from the simulated sample, obtaining (Emeas-Emc)/Emc = 11%/sqrt(E[MeV]) + 2%.Comment: 16 pages, 8 figures, LaTex, A4. Some text and 1 figure added. Final version as accepted for publication in The European Physical Journal

Two groups of red giants with distinct chemical abundances in the bulge globular cluster NGC 6553 through the eyes of APOGEE

Multiple populations revealed in globular clusters (GCs) are important windows to the formation and evolution of these stellar systems. The metal-rich GCs in the Galactic bulge are an indispensable part of this picture, but the high optical extinction in this region has prevented extensive research. In this work, we use the high-resolution near-infrared (NIR) spectroscopic data from Apache Point Observatory Galactic Evolution Experiment (APOGEE) to study the chemical abundances of NGC 6553, which is one of the most metal-rich bulge GCs. We identify 10 red giants as cluster members using their positions, radial velocities, iron abundances, and NIR photometry. Our sample stars show a mean radial velocity of −0.14 ± 5.47 km s−1, and a mean [Fe/H] of −0.15 ± 0.05. We clearly separate two populations of stars in C and N in this GC for the first time. NGC 6553 is the most metal-rich GC where the multiple stellar population phenomenon is found until now. Substantial chemical variations are also found in Na, O, and Al. However, the two populations show similar Si, Ca, and iron-peak element abundances. Therefore, we infer that the CNO, NeNa, and MgAl cycles have been activated, but the MgAl cycle is too weak to show its effect on Mg. Type Ia and Type II supernovae do not seem to have significantly polluted the second generation stars. Comparing with other GC studies, NGC 6553 shows similar chemical variations as other relatively metal-rich GCs. We also confront current GC formation theories with our results, and suggest possible avenues for improvement in the models