80 research outputs found
Private 5G, “Not As Private As You May Think”
As the need grows for mobile solutions that can offer more data throughput with ultra-reliable low-latency communications and better connection density—albeit at risk—private 5G networks and the shift to Industry 4.0 are gaining pace. As 5G technology develops and enterprises start implementing it, they need to be cautious during this transitional phase to make sure they are cognizant of and control risk as their attack surface changes. Many private 5G deployments use 4G/LTE Core networks in Non-Stand-Alone mode, which keeps many of the same vulnerabilities that have been there for years. As a result, private 5G is frequently not fully 5G pure. In this research paper, a few of the present-day weaknesses in the Stream Control Transmission and GPRS Tunnelling protocols—as well as the Industrial Control System protocols—that businesses need to be aware of and safeguard while using these technologies are discussed and shown
Bianchijev kozmološki model tipa I u Lyrinoj mnogostrukosti
Bianchi type-I cosmological model in Lyra\u27s manifold is obtained assuming a massless scalar field as the source of gravitational field. Some physical and geometrical properties of the model are discussed.Razvili smo Bianchijev kozmološki model tipa I u Lyrinoj mnogostrukosti kada je izvor gravitacijskog polja bezmaseno skalarno polje. Raspravljaju se neka fizička i geometrijska svojstva modela
Bianchijev kozmološki model tipa I u Lyrinoj mnogostrukosti
Bianchi type-I cosmological model in Lyra\u27s manifold is obtained assuming a massless scalar field as the source of gravitational field. Some physical and geometrical properties of the model are discussed.Razvili smo Bianchijev kozmološki model tipa I u Lyrinoj mnogostrukosti kada je izvor gravitacijskog polja bezmaseno skalarno polje. Raspravljaju se neka fizička i geometrijska svojstva modela
Evaluation of Salinity Problem in Swell-Shrink Soils of a Part of the Purna Valley, Maharashtra
Abstract: The study on evaluatation of salinity problem in swell-shrink soils (Vertisols
On Metal-Insulator Transitions due to Self-Doping
We investigate the influence of an unoccupied band on the transport
properties of a strongly correlated electron system. For that purpose,
additional orbitals are coupled to a Hubbard model via hybridization. The
filling is one electron per site. Depending on the position of the additional
band, both, a metal--to--insulator and an insulator--to--metal transition occur
with increasing hybridization. The latter transition from a Mott insulator into
a metal via ``self--doping'' was recently proposed to explain the low carrier
concentration in . We suggest a restrictive parameter regime for
this transition making use of exact results in various limits. The predicted
absence of the self--doping transition for nested Fermi surfaces is confirmed
by means of an unrestricted Hartree--Fock approximation and an exact
diagonalization study in one dimension. In the general case metal--insulator
phase diagrams are obtained within the slave--boson mean--field and the
alloy--analog approximation.Comment: 9 pages, Revtex, 6 postscript figure
Electronic structure of NiS_{1-x}Se_x
We investigate the electronic structure of the metallic NiSSe
system using various electron spectroscopic techniques. The band structure
results do not describe the details of the spectral features in the
experimental spectrum, even for this paramagnetic metallic phase. However, a
parameterized many-body multi-band model is found to be successful in
describing the Ni~2 core level and valence band, within the same model. The
asymmetric line shape as well as the weak intensity feature in the Ni~2 core
level spectrum has been ascribed to extrinsic loss processes in the system. The
presence of satellite features in the valence band spectrum shows the existence
of the lower Hubbard band, deep inside the metallic regime, consistent
with the predictions of the dynamical mean field theory.Comment: To be published in Physical Review B, 18 pages and 5 figure
X-ray photoemission study of NiS_{2-x}Se_x (x = 0.0 - 1.2)
Electronic structure of NiS_{2-x}Se_x system has been investigated for
various compositions (x) using x-ray photoemission spectroscopy. An analysis of
the core level as well as the valence band spectra of NiS_2 in conjunction with
many-body cluster calculations provides a quantitative description of the
electronic structure of this compound. With increasing Se content, the on-site
Coulomb correlation strength (U) does not change, while the band width W of the
system increases, driving the system from a covalent insulating state to a
pd-metallic state.Comment: 19 pages, 6 figures, To appear in Phys. Rev. B, 200
Spin and charge ordering in self-doped Mott insulators
We have investigated possible spin and charge ordered states in 3d
transition-metal oxides with small or negative charge-transfer energy, which
can be regarded as self-doped Mott insulators, using Hartree-Fock calculations
on d-p-type lattice models. It was found that an antiferromagnetic state with
charge ordering in oxygen 2p orbitals is favored for relatively large
charge-transfer energy and may be relevant for PrNiO and NdNiO. On the
other hand, an antiferromagnetic state with charge ordering in transition-metal
3 orbitals tends to be stable for highly negative charge-transfer energy and
can be stabilized by the breathing-type lattice distortion; this is probably
realized in YNiO.Comment: 4 pages, 4 figure
Isoniazid hair concentrations in children with tuberculosis: a proof of concept study
Assessing treatment adherence and quantifying tuberculosis drug exposure among children is challenging. We undertook a “proof of concept” study to assess the drug concentrations of isoniazid in hair as a therapeutic drug monitoring tool. Children <12 years of age initiated on thrice-weekly treatment including isoniazid (10 mg/kg) for newly diagnosed tuberculosis were enrolled. Isoniazid concentrations in hair were measured using liquid chromatography-tandem mass spectrometry at 1, 2, 4 and 6 months after tuberculosis treatment initiation. We found that isoniazid hair concentrations in all children on thrice weekly isoniazid were detectable and displayed variability across a dynamic range
Georeferenced soil information system: assessment of database
Land-use planning is a decision-making process that
facilitates the allocation of land to different uses that
provide optimal and sustainable benefit. As land-use
is shaped by society–nature interaction, in land-use
planning different components/facets play a significant
role involving soil, water, climate, animal (ruminant/
non-ruminant) and others, including forestry
and the environment needed for survival of mankind.
At times these components are moderated by human
interference. Thus land-use planning being a dynamic
phenomenon is not guided by a single factor, but by a
complex system working simultaneously,which largely
affects the sustainability. To address such issues a
National Agricultural Innovation Project (NAIP) on
‘Georeferenced soil information system for land-use
planning and monitoring soil and land quality for
agriculture’ was undertaken to develop threshold
values of land quality parameters for land-use planning
through quantitative land evaluation and crop
modelling for dominant cropping systems in major
agro-ecological sub-regions (AESRs) representing
rice–wheat cropping system in the Indo-Gangetic
Plains (IGP) and deep-rooted crops in the black
soil regions (BSR). To assess the impact of landuse
change, threshold land quality indicator values
are used. A modified AESR map for agricultural landuse
planning is generated for effective land-use planning
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