519 research outputs found
Europees minimum voor vennootschapsbelasting is goede zaak
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
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
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
We report results on the geometrical statistics of the vorticity vector
obtained from experiments in electromagnetically forced rotating turbulence. A
range of rotation rates is considered, from non-rotating to rapidly
rotating turbulence with a maximum background rotation rate of rad/s
(with Rossby number much smaller than unity). Typically, in our experiments
. 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 ( rad/s) to quasi-2D
turbulence ( 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
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
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
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
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
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 . Here we show that the phase
with even has a diamagnetic persistent current (seen experimentally but
mysterious theoretically), while that with 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
Excitation functions were measured for the Mn(n,2n)Mn,
Mn(n,)V, Cu(n,)Co,
Cu(n,2n)Cu, and Cu(n,p)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, E40 MeV, Neutron activation cross section measurements, Nuclear
reactions, Model calculations, Manganese, CopperComment: 39 pages, 12 figure
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