664 research outputs found
Dissipation bounds asymmetry of finite-time cross-correlations
Recent studies have revealed an intimate connection between the asymmetry of
cross-correlations and thermodynamic quantities in the short-time limit. In the
finite-time regime, however, this relationship remains poorly understood. In
this Letter, we comprehensively examine this issue and provide an affirmative
resolution. Focusing on Markovian dynamics, we show that the asymmetry observed
in finite-time cross-correlations is always upper bounded by dissipation.
Precisely, we prove that, for systems in a steady state with arbitrary
operational durations, the asymmetry exhibits, at most, linear growth over
time, with the growth speed determined by the rates of entropy production and
dynamical activity. In the long-time regime, the asymmetry exhibits exponential
decay, with the decay rate dictated by the spectral gap of the transition
matrix. Furthermore, we generalize the short-time bounds on correlation
asymmetry, as reported by Shiraishi [arXiv:2304.12775] and Ohga et
al.~[arXiv:2303.13116], to encompass finite-time scenarios. These findings
offer novel insights into the thermodynamic aspects of correlation asymmetry.Comment: 6+6 pages, 1 figur
On the GAGA principle for algebraic affine hypersurfaces
For any complete -algebraic variety Y and its underlying compact -analytic space , it follows from the well known GAGA principle that the algebraic Picard group and the analytic Picard group are isomorphic. Our main purpose here is to provide a simple proof of an analogous situation for non complete -algebraic varieties, namely -algebraic affine hypersurfaces with at most isolated singularities
On the GAGA principle for algebraic affine hypersurfaces
For any complete -algebraic variety Y and its underlying compact -analytic space , it follows from the well known GAGA principle that the algebraic Picard group and the analytic Picard group are isomorphic. Our main purpose here is to provide a simple proof of an analogous situation for non complete -algebraic varieties, namely -algebraic affine hypersurfaces with at most isolated singularities
Current medical product development for diagnosis, surgical planning and treatment in the areas of Neurosurgery, Orthopeadic and Dental-Cranio-Maxillofacial surgery in Vietnam
With the population of 86 million and good GDP growth in recent decades, the medical market in Vietnam is growing fast. However, most of the medical technology products are imported, and the number of locally manufactured ones is limited and they do not have the high competition capability in term of quality, quantity and types. In this paper, the current product development in Vietnam for diagnosis, surgical planning and treatment in the areas of Rehabilitation, Neurosurgery, Orthopeadic and Dental-Cranio-Maxillofacial surgery is presented. A roadmap for medical technology development in Vietnam is propose
Design of Mobile Manipulator for Fire Extinguisher Testing. Part I Key Specifications and Conceptual Design
All flames are extinguished as early as possible, or fire services have to
deal with major conflagrations. This leads to the fact that the quality of fire
extinguishers has become a very sensitive and important issue in firefighting.
Inspired by the development of automatic fire fighting systems, this paper
proposes key specifications based on the standard of fire extinguishers that is
ISO 7165:2009 and ISO 11601:2008, and feasible solutions to design a mobile
manipulator for automatically evaluating the quality or, more specifically,
power of fire extinguishers. In addition, a part of the mechanical design is
also discussed.Comment: 10 pages, 8 figures, the 7th International Conference on Advanced
Engineering, Theory and Application
SWIPT-enabled cooperative wireless IoT networks with friendly jammer and eavesdropper: Outage and intercept probability analysis
Physical layer security (PLS) and simultaneous wireless information and power transfer
(SWIPT) in cooperative relaying have gained great interest as technologies for security and energy enhance ment in Internet-of-Things (IoT) networks. In this work, we investigate PLS for a SWIPT- and AF-enabled
cooperative wireless IoT system, consisting of one source, multiple energy harvesting (EH) relays, and
one destination, in the presence of an eavesdropper that tries to overhear the confidential information.
Furthermore, an EH-friendly jammer is deployed to transmit jamming signals aimed at the eavesdropper
to improve the security system. In this context, a low-complexity, sub-optimal, but efficient relay selection
method is proposed. More specifically, the relay is selected to convey information such that it has the best
channel to the source. Based on the proposed system model, the performance analysis of the intercept
probability (IP), asymptotic IP, and non-zero secrecy probability (NZSP) is analyzed by considering the
time switching (TS)-based relaying strategy. Particularly, the exact closed-form expression of IP is achieved
by applying modified Bessel function expansion. Monte-Carlo simulations are employed to corroborate the
correctness and efficiency of our mathematical analysis. The time splitting factor α makes variations on the
IP of about 3× as α ∈ [0.1, 0.8]. However, a dramatic reduction of the IP up to 317× is observed as α
increases from 0.8 to 0.9.Web of Science11861778616
A real-time RT-PCR for detection of clade 1 and 2 H5N1 Influenza A virus using Locked Nucleic Acid (LNA) TaqMan probes
<p>Abstract</p> <p>Background</p> <p>The emergence and co-circulation of two different clades (clade 1 and 2) of H5N1 influenza viruses in Vietnam necessitates the availability of a diagnostic assay that can detect both variants.</p> <p>Results</p> <p>We developed a single real-time RT-PCR assay for detection of both clades of H5N1 viruses, directly from clinical specimens, using locked nucleic acid TaqMan probes. Primers and probe used in this assay were designed based on a highly conserved region in the <it>HA </it>gene of H5N1 viruses. The analytical sensitivity of the assay was < 0.5 PFU and 10 - 100 ssDNA plasmid copies. A total of 106 clinical samples (58 from patients infected with clade 1, 2.1 or 2.3 H5N1 viruses and 48 from uninfected or seasonal influenza A virus-infected individuals) were tested by the assay. The assay showed 97% concordance with initial diagnostics for H5 influenza virus infection with a specificity of 100%.</p> <p>Conclusions</p> <p>This assay is a useful tool for diagnosis of H5N1 virus infections in regions where different genetic clades are co-circulating.</p
- …