519 research outputs found

    Europees minimum voor vennootschapsbelasting is goede zaak

    Get PDF
    Het voorstel voor een Europees minimumtarief voor de vennootschapsbelasting is verstandig. Enerzijds voorkomt een minimumtarief een al te scherpe race naar de bodem. Anderzijds blijft de mogelijkheid voor belastingsconcurrentie bestaan

    Evaluatie vennootschapsbelasting

    Get PDF
    Een lagere effectieve druk op ondernemingen is in Nederland niet noodzakelijk, maar een lager tarief van de vennootschapsbelasting is wél wenselijk

    Penerapan Model Pembelajaran Kooperatif Tipe Make a Match Untuk Meningkatkan Keaktifan dan Hasil Belajar Peserta Didik SDN 171 Rejang Lebong

    Get PDF
    AbstractThis study aims to describe steps of make a match model, to improve  activeness and learning outcomes of grade III students at SDN 171 by applying a Make a match model. The subjects of this study were teachers and students. Data collection techniques in the form of observations and tests. Assessment instruments in the form of observations and tests. Observation data analysis techniques use the formula of average score, highest score, lowest score, score difference and range values for each criterion. The test data is analyzed using the formula of average grades and classical percentages. The results of the teacher activity research in the application of model Make a match cycle I obtained a score of 61.15 (good)  and cycle II increased by 80.15 (very good), the activeness of learning learners in cycle I obtained a score of 10.05 (sufficient) and increased in cycle II obtained an average score of 13.12 (good). The results of learning cycle I in Indonesian subjects in classroom amounted to 67.48 with classical completion of 47.05%, in cycle II average grade value was 75.74 with classical completion of 76.47%. Mathematics subjects in cycle I obtained an average class of 69.55 with classical completion of 70.58%, in cycle II the average grade score of 81.13 with classical completion of 88.23%. Thus, it can be concluded that the application of Make a match model can improve the activeness and learning outcomes of students in Grade III SDN 171.Keywords: Make a match, Liveliness, Learning Outcomes

    Geometrical statistics of the vorticity vector and the strain rate tensor in rotating turbulence

    Full text link
    We report results on the geometrical statistics of the vorticity vector obtained from experiments in electromagnetically forced rotating turbulence. A range of rotation rates Ω\Omega is considered, from non-rotating to rapidly rotating turbulence with a maximum background rotation rate of Ω=5\Omega=5 rad/s (with Rossby number much smaller than unity). Typically, in our experiments Reλ100{\rm{Re}}_{\lambda}\approx 100. The measurement volume is located in the centre of the fluid container above the bottom boundary layer, where the turbulent flow can be considered locally statistically isotropic and horizontally homogeneous for the non-rotating case, see van Bokhoven et al., Phys. Fluids 21, 096601 (2009). Based on the full set of velocity derivatives, measured in a Lagrangian way by 3D Particle Tracking Velocimetry, we have been able to quantify statistically the effect of system rotation on several flow properties. The experimental results show how the turbulence evolves from almost isotropic 3D turbulence (Ω0.2\Omega\lesssim 0.2 rad/s) to quasi-2D turbulence (Ω5.0\Omega\approx 5.0 rad/s) and how this is reflected by several statistical quantities. In particular, we have studied the orientation of the vorticity vector with respect to the three eigenvectors of the local strain rate tensor and with respect to the vortex stretching vector. Additionally, we have quantified the role of system rotation on the self-amplification terms of the enstrophy and strain rate equations and the direct contribution of the background rotation on these evolution equations. The main effect is the strong reduction of extreme events and related (strong) reduction of the skewness of PDFs of several quantities such as, for example, the intermediate eigenvalue of the strain rate tensor and the enstrophy self-amplification term.Comment: 17 pages, 6 figures, 3 table

    Memristive Behavior of NAOH-Immersed Titania Nanostructures

    Get PDF
    Memristive behavior is defined as a resistive switching loop which can be observed from the current-voltage (I-V) characteristic of a material. This paper reports the application of TiO2 (titania) nanostructures as an active layer for a memristive device instead of using titania thin film in nanoscale thickness as reported by other researchers. 60 nm thickness of titania thin film was deposited on ITO-coated glass substrate using the RF-magnetron sputtering method. Then, for the titania nanostructure’s growth, the TiO2/ITO/glass sample was immersed in 10 mol/l aqueous NaOH solution at 80°C while varying the immersion time for 30, 45 and 60 min. It was found that the sample immersed for 30 min showed better memristive behavior since larger switching loops were observed when positive bias was applied to the sample. The active layer consists of oxygen-deficient titania where oxygen vacancies might present on the surface of the thin film as the result of NaOH-immersion beside the formation of titania nanostructures. The degradation of the switching loops of the samples immersed in NaOH solution for 45 and 60 min might be due to the higher porosity of the samples resulting from the longer immersion process

    Randomized Kaczmarz solver for noisy linear systems

    Get PDF
    The Kaczmarz method is an iterative algorithm for solving systems of linear equations Ax=b. Theoretical convergence rates for this algorithm were largely unknown until recently when work was done on a randomized version of the algorithm. It was proved that for overdetermined systems, the randomized Kaczmarz method converges with expected exponential rate, independent of the number of equations in the system. Here we analyze the case where the system Ax=b is corrupted by noise, so we consider the system where Ax is approximately b + r where r is an arbitrary error vector. We prove that in this noisy version, the randomized method reaches an error threshold dependent on the matrix A with the same rate as in the error-free case. We provide examples showing our results are sharp in the general context

    Tracing the String: BMN correspondence at Finite J^2/N

    Get PDF
    Employing the string bit formalism of hep-th/0209215, we identify the basis transformation that relates BMN operators in N=4 gauge theory to string states in the dual string field theory at finite g_2=J^2/N. In this basis, the supercharge truncates at linear order in g_2, and the mixing amplitude between 1 and 2-string states precisely matches with the (corrected) answer of hep-th/0206073 for the 3-string amplitude in light-cone string field theory. Supersymmetry then predicts the order g_2^2 contact term in the string bit Hamiltonian. The resulting leading order mass renormalization of string states agrees with the recently computed shift in conformal dimension of BMN operators in the gauge theory.Comment: 11 pages, 1 figur

    Differential diagnosis in spinal and bulbar muscular atrophy clinical and molecular aspects

    Get PDF
    Kennedy disease is caused by an enlarged trinucleotide repeat sequence within the androgen receptor gene. We report here seven male patients with a benign motor neuron syndrome highly analogous to Kennedy disease but with a normal trinucleotide repeat

    Diamagnetic Persistent Currents and Spontaneous Time-Reversal Symmetry Breaking in Mesoscopic Structures

    Full text link
    Recently, new strongly interacting phases have been uncovered in mesoscopic systems with chaotic scattering at the boundaries by two of the present authors and R. Shankar. This analysis is reliable when the dimensionless conductance of the system is large, and is nonperturbative in both disorder and interactions. The new phases are the mesoscopic analogue of spontaneous distortions of the Fermi surface induced by interactions in bulk systems and can occur in any Fermi liquid channel with angular momentum mm. Here we show that the phase with mm even has a diamagnetic persistent current (seen experimentally but mysterious theoretically), while that with mm odd can be driven through a transition which spontaneously breaks time-reversal symmetry by increasing the coupling to dissipative leads.Comment: 4 pages, three eps figure

    Fast-neutron induced pre-equilibrium reactions on 55Mn and 63,65Cu at energies up to 40 MeV

    Full text link
    Excitation functions were measured for the 55^{55}Mn(n,2n)54^{54}Mn, 55^{55}Mn(n,α\alpha)52^{52}V, 63^{63}Cu(n,α\alpha)60^{60}Co, 65^{65}Cu(n,2n)64^{64}Cu, and 65^{65}Cu(n,p)65^{65}Ni reactions from 13.47 to 14.83 MeV. The experimental cross sections are compared with the results of calculations including all activation channels for the stable isotopes of Mn and Cu, for neutron incident energies up to 50 MeV. Within the energy range up to 20 MeV the model calculations are most sensitive to the parameters related to nuclei in the early stages of the reaction, while the model assumptions are better established by analysis of the data in the energy range 20-40 MeV. While the present analysis has taken advantage of both a new set of accurate measured cross sections around 14 MeV and the larger data basis fortunately available between 20 and 40 MeV for the Mn and Cu isotopes, the need of additional measurements below as well as above 40 MeV is pointed out. Keywords: 55Mn, 63,65Cu, E\leq40 MeV, Neutron activation cross section measurements, Nuclear reactions, Model calculations, Manganese, CopperComment: 39 pages, 12 figure
    corecore