52 research outputs found
Foreign experience of public administration in the context of the economic equilibrium of synthetic economic crisis
This article identify catalysts of synthetic economic crisis. These catalysts are the subject of transnational corporations, international financial, trade organizations, regional integration groupings. Generalized mechanism for the flow of synthetic economic crisis and their types. This article also proves that the response of governments to the process flow of synthetic economic crisis with the help of the classical fiscal, monetary and administrative-legislative instruments are not effective
Creativity of High School Teachers Over Time
This article deals with the creativity of teachers of higher education in the process of their professional activity. The teacher's creativity is substantiated as an important factor that determines the success of the teacher's professional activity and, as a consequence, a better educational process. An active professional thesaurus of a teacher is considered as a means of supporting indicators of changes in biological creativity. The data were obtained from direct surveys of teachers, administrators and managers of universities, using D. Johnson's creativity questionnaire, adapted by E.V. Tunik, as well as from the review of the results of scientific and pedagogical activities of university teachers: original articles, creative classes, and translation of creative behavior. Based on the data of the study, the dependence of the level of creativity of a higher education teacher on the level of a professional thesaurus is revealed. In particular, the article presents the level of creativity of teachers who combine educational work with research, teachers who are mainly engaged in educational activities and representatives of the administrative and managerial personnel of universities, combining managerial functions with teaching
Monopolar and dipolar relaxation in spin ice HoTiO
When degenerate states are separated by large energy barriers, the approach
to thermal equilibrium can be slow enough that physical properties are defined
by the thermalization process rather than the equilibrium. The exploration of
thermalization pushes experimental boundaries and provides refreshing insights
into atomic scale correlations and processes that impact steady state dynamics
and prospects for realizing solid state quantum entanglement. We present a
comprehensive study of magnetic relaxation in HoTiO based on
frequency-dependent susceptibility measurements and neutron diffraction studies
of the real-time atomic-scale response to field quenches. Covering nearly ten
decades in time scales, these experiments uncover two distinct relaxation
processes that dominate in different temperature regimes. At low temperatures
(0.6K<T<1K) magnetic relaxation is associated with monopole motion along the
applied field direction through the spin-ice vacuum. The increase of the
relaxation time upon cooling indicates reduced monopole conductivity driven by
decreasing monopole concentration and mobility as in a semiconductor. At higher
temperatures (1K<T<2K) magnetic relaxation is associated with the reorientation
of monopolar bound states as the system approaches the single-spin tunneling
regime. Spin fractionalization is thus directly exposed in the relaxation
dynamics
Cardiotoxic Effects of Yew Tree and Pink Periwinkle Alkaloids
Antitumour herbal medicines based on pink periwinkle and yew tree alkaloids are included in combination therapies for many types of cancer. The use of these classes of products may entail cardiotoxic effects leading to life-threatening conditions. The aim of the study was to analyse scientific literature on cardiotoxic effects of anticancer drugs based on yew tree alkaloids (taxanes) and pink periwinkle alkaloids (vinca alkaloids). The results of the analysis demonstrated that the main manifestations of taxane-induced cardiotoxicity were bradycardia, atrioventricular block, atrial and ventricular arrhythmias. Concomitant use of taxanes and anthracycline antibiotics exacerbated cardiotoxic effects of both drug classes. The use of vinca alkaloids was associated with haematological toxicity in the form of neutropenia, while cardiotoxic effect was rarely observed during monotherapy. Raising awareness among oncologists, cardiologists, and other specialists involved in the management of cancer patients about potential cardiac complications of antitumour therapy contributes to early detection of adverse reactions and allows for individual correction of treatment regimens, especially in patients with predisposition to cardiovascular disease
Electron transport in a quasi-one dimensional channel on suspended helium films
Quasi-one dimensional electron systems have been created using a suspended
helium film on a structured substrate. The electron mobility along the channel
is calculated by taking into account the essential scattering processes of
electrons by helium atoms in the vapor phase, ripplons, and surface defects of
the film substrate. It is shown that the last scattering mechanism may dominate
the electron mobility in the low temperature limit changing drastically the
temperature dependence of the mobility in comparison with that controlled by
the electron-ripplon scattering.Comment: 4 pages, 1 figur
Can Galactic Observations Be Explained by a Relativistic Gravity Theory?
We consider the possibility of an alternative gravity theory explaining the
dynamics of galactic systems without dark matter. From very general assumptions
about the structure of a relativistic gravity theory we derive a general
expression for the metric to order . This allows us to compare the
predictions of the theory with various experimental data: the Newtonian limit,
light deflection and retardation, rotation of galaxies and gravitational
lensing. Our general conclusion is that the possibility for any gravity theory
to explain the behaviour of galaxies without dark matter is rather improbable.Comment: 12p, REVTeX 3.
A Low Complexity Scheme for Entanglement Distributor Buses
For technological purposes and theoretical curiosity, it is very interesting
to have a building block that produces a considerable amount of entanglement
between on-demand sites through a simple control of a few sites. Here, we
consider permanently-coupled spin networks and study entanglement generation
between qubit pairs to find low-complexity structures capable of generating
considerable entanglement between various qubit pairs. We find that in axially
symmetric networks the generated entanglement between some qubit pairs is
rather larger than generic networks. We show that in uniformly-coupled spin
rings each pair can be considerably entangled through controlling suitable
vertices. To set the location of controlling-vertices, we observe that the
symmetry has to be broken for a definite time. To achieve this, a magnetic flux
can be applied to break symmetry via Aharonov-Bohm effect. Such a set up can
serve as an efficient entanglement distributor bus in which each vertex-pair
can be efficiently entangled through exciting only one fixed vertex and
controlling the evolution time. The low-complexity of this scheme makes it
attractive for use in nanoscale quantum information processors.Comment: 23 pages, 4 figures, Major revision, title changed, published versio
Superconducting Nanocircuits for Topologically Protected Qubits
For successful realization of a quantum computer, its building blocks
(qubits) should be simultaneously scalable and sufficiently protected from
environmental noise. Recently, a novel approach to the protection of
superconducting qubits has been proposed. The idea is to prevent errors at the
"hardware" level, by building a fault-free (topologically protected) logical
qubit from "faulty" physical qubits with properly engineered interactions
between them. It has been predicted that the decoupling of a protected logical
qubit from local noises would grow exponentially with the number of physical
qubits. Here we report on the proof-of-concept experiments with a prototype
device which consists of twelve physical qubits made of nanoscale Josephson
junctions. We observed that due to properly tuned quantum fluctuations, this
qubit is protected against magnetic flux variations well beyond linear order,
in agreement with theoretical predictions. These results demonstrate the
feasibility of topologically protected superconducting qubits.Comment: 25 pages, 5 figure
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