1,398 research outputs found
Novel String Banana Template Method of Track Reconstruction for high Multiplicity Events with Significant Multiple Scattering
Novel String Banana Template Method (SBTM) for track reconstruction in high
multiplicity events in non-uniform magnetic field spectrometer with emphasis on
the lowest momenta tracks with significant Multiple Scattering (MS) is
described. Two steps model of track with additional parameter/s which takes
into account MS for this particular track is introduced. SBTM is time efficient
and demonstrates better resolutions than another method equivalent to the Least
Squares method (LSM).Comment: 3 pages, 3 figures, DPF2004 Proceeding, International Journal of
Modern Physics
Non-linear power spectra of dark and luminous matter in halo model of structure formation
The late stages of large-scale structure evolution are treated
semi-analytically within the framework of modified halo model. We suggest
simple yet accurate approximation for relating the non-linear amplitude to
linear one for spherical density perturbation. For halo concentration
parameter, , a new computation technique is proposed, which eliminates the
need of interim evaluation of the . Validity of the technique is
proved for CDM and WDM cosmologies. Also, the parameters for
Sheth-Tormen mass function are estimated. The modified and extended halo model
is applied for determination of non-linear power spectrum of dark matter, as
well as for galaxy power spectrum estimation. The semi-analytical techniques
for dark matter power spectrum are verified by comparison with data from
numerical simulations. Also, the predictions for the galaxy power spectra are
confronted with 'observed' data from PSCz and SDSS galaxy catalogs, good
accordance is found.Comment: 18 pages, 8 figures; major changes from the previous version;
accepted for publivation in Phys. Rev.
Purposes of Land Law of Ukraine
Purposes of land law as a separate branch of legal system of Ukraine are
researched. Purpose is an obligatory part of any social mechanism. So legal regulation of
land relations must be oriented on achievement of some legal purposes. It was stated in
legal literature that purpose of law (legal purpose) is regarded as form of future in temporary
times. It is a kind of proper status of social relations in current legislation. That is
why purpose in law plays a role of legal instrument which serves to lawmakers as a mode
of organization of all system of legal regulation of social relations. It was also stated in the legal literature that the most significant peculiarities of any
purpose in law is its normativeness, because most of legal purposes are not only desired
result but is obligatory way of activity. That is why legal purpose serves as a regulator
of social relations in any society. Besides, legal purpose is regarded as some model of
social order which is guaranteed by state. So legal purpose is an official orient for legal
practice. It is proved in the article that modern land law of Ukraine has two legal purposes. The
first purpose of land law of Ukraine is protection of land, but second its purpose consists
in promotion of realization of rights and legal interests of participants of land legal relations.
However, the purposes of land law of Ukraine are not equal by its legal force. The
purpose of protection of land should be regarded as the main purpose of land law of
Ukraine. It means that the second purpose of land law of Ukraine might be achieved only
in case of achievement of the first its purpose. Bu other words, modern land law of Ukraine
has to be based on principle provision “no land – no right to land”. The author of the
article proves that if society are not able to protect land it also is unable to secure any
rights to the land. Finally, to streamline activity of all participants of land legal relations
at achievement of the main purpose of land law of Ukraine it is necessary to adopt legal
normative (requirements) of quality status of all types of land in Ukraine
Special protection of the Ukrainian lands as the main national wealth: theoretical and legal aspects
Abstract. With a unique soil cover, Ukraine has been leading in the production and world export of grain crops and sunflower, providing grain needs for 400 million people in recent years. However, an unbalanced scarce farming system has caused increased soil degradation and a decrease in its fertility level.
In connection with this, the relevance of the protection and rational use of land has increased significantly, as the tendency to worsen the quality of land has intensified, and sometimes it became a crisis. Russian aggression has led to the seizure and destruction of part of the land resource, soil cover pollution, mining of significant territories, direct physical damage to Ukrainian black soil.
The article is aimed at studying the implementation in the country of the constitutional provision for the special protection of land as the main national wealth, as well as the main directions of ensuring the reproduction and increase of soil fertility. The relationship between land and civil law is analyzed, the peculiarities of the presentation of the provisions of Article 14 of the provisions of the Constitution of Ukraine, Civil Code, Law of Ukraine "On Land Protection" are disclosed.
The necessity of improving a number of provisions of the Law of Ukraine "On Land Protection", the legal regime of especially valuable lands is substantiated, preservation of independence of land law as a separate legal system.
Keywords: special protection of land, constitutional status, land legislation, categories of land, national wealth, especially valuable land, land resource potentia
Zinc regeneration in rechargeable zinc-air fuel cells:a review
Zinc-air fuel cells (ZAFCs) present a promising energy source with a competing potential with the lithium-ion battery and even with proton-exchange membrane fuel cells (PEMFCs) for applications in next generation electrified transport and energy storage. The regeneration of zinc is essential for developing the next-generation, i.e., electrochemically rechargeable ZAFCs. This review aims to provide a comprehensive view on both theoretical and industrial platforms already built hitherto, with focus on electrode materials, electrode and electrolyte additives, solution chemistry, zinc deposition reaction mechanisms and kinetics, and electrochemical zinc regeneration systems. The related technological challenges and their possible solutions are described and discussed. A summary of important R&D patents published within the recent 10 years is also presented
Large-scale structure formation in cosmology with classical and tachyonic scalar fields
The evolution of scalar perturbations is studied for 2-component
(non-relativistic matter and dark energy) cosmological models at the linear and
non-linear stages. The dark energy is assumed to be the scalar field with
either classical or tachyonic Lagrangian and constant equation-of-state
parameter w. The fields and potentials were reconstructed for the set of
cosmological parameters derived from observations. The comparison of the
calculated within these models and experimental large-scale structure
characteristics is made. It is shown that for w=const such analysis can't
remove the existing degeneracy of the dark energy models.Comment: 15 pages, 5 figures, text corrected, references added, accepted by
Kinematics and Physics of Celestial Bodie
Electronic spin working mechanically
A single-electron tunneling (SET) device with a nanoscale central island that
can move with respect to the bulk source- and drain electrodes allows for a
nanoelectromechanical (NEM) coupling between the electrical current through the
device and mechanical vibrations of the island. Although an electromechanical
"shuttle" instability and the associated phenomenon of single-electron
shuttling were predicted more than 15 years ago, both theoretical and
experimental studies of NEM-SET structures are still carried out. New
functionalities based on quantum coherence, Coulomb correlations and coherent
electron-spin dynamics are of particular current interest. In this article we
present a short review of recent activities in this area.Comment: 17 pages, 11 figures. arXiv admin note: substantial text overlap with
arXiv:1303.074
Pseudorapidity and centrality dependence of the collective flow of charged particles in Au+Au collisions at sqrt{s_NN} = 130 GeV
This paper describes the measurement of collective flow for charged particles
in Au+Au collisions at sqrt{s_NN}} = 130 GeV using the PHOBOS detector at the
Relativistic Heavy Ion Collider (RHIC). An azimuthal anisotropy is observed in
the charged particle hit distribution in the PHOBOS multiplicity detector. This
anisotropy is presented over a wide range of pseudorapidity (eta) for the first
time at this energy. The size of the anisotropy (v_{2}) is thought to probe the
degree of equilibration achieved in these collisions. The result here,averaged
over momenta and particle species, is observed to reach 7% for peripheral
collisions at mid-rapidity, falling off with centrality and increasing |eta|.
Data are presented as a function of centrality for |eta|<1.0 and as a function
of eta, averaged over centrality, in the angular region -5.0<eta<5.3. These
results call into question the common assumption of longitudinal boost
invariance over a large region of rapidity in RHIC collisions.Comment: 5 pages, 4 figures, submitted to Physical Review Letter
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