cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Starry Messages: Searching for Signatures of Interstellar Archaeology
Creators: name: Carrigan, Richard A.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Searching for signatures of cosmic-scale archaeological artifacts such as Dyson spheres or Kardashev civilizations is an interesting alternative to conventional SETI. Uncovering such an artifact does not require the intentional transmission of a signal on the part of the original civilization. This type of search is called interstellar archaeology or sometimes cosmic archaeology. The detection of intelligence elsewhere in the Universe with interstellar archaeology or SETI would have broad implications for science. For example, the constraints of the anthropic principle would have to be loosened if a different type of intelligence was discovered elsewhere. A variety of interstellar archaeology signatures are discussed including non-natural planetary atmospheric constituents, stellar doping with isotopes of nuclear wastes, Dyson spheres, as well as signatures of stellar and galactic-scale engineering. The concept of a Fermi bubble due to interstellar migration is introduced in the discussion of galactic signatures. These potential interstellar archaeological signatures are classified using the Kardashev scale. A modified Drake equation is used to evaluate the relative challenges of finding various sources. With few exceptions interstellar archaeological signatures are clouded and beyond current technological capabilities. However SETI for so-called cultural transmissions and planetary atmosphere signatures are within reach.
description: 29 pages including 4 figures and 1 table
An Innovative Approach for Reliability Modeling of HVDC Converter Station
Creators: name: Tiwary, Aditya
name: R.S. Mandloi
Publisher: name: Reliability: Theory & Applications
Year: 2023
Subjects: Reliability
Mean time to failure
HVDC converter station
availability
Reliability indices

description: Assessment of reliability indices is important when availability and unavailability of the system or systems or components or group of components are to be assessed. There are various reliability indexes which are very important for overall performance of any complex engineering system. Reliability block diagram modeling is required to be formulated for evaluating different essential and important reliability parameters of any complex engineering system. In view of above, in this paper, reliability block diagram modeling of HVDC converter station is represented and formulated. The schematic diagram of the HVDC converter station is available in literature and based on that schematic diagram the modeling of HVDC converter station is formulated in this paper. After the reliability block diagram modeling of HVDC converter station, the mean time to failure (MTTF) of each and every components of HVDC converter station are also evaluated and represented in the result and discussion section. The reliability of each and every component of the HVDC converter station is evaluated and expressed in result section. Assessment of unavailability is also obtained and shown in result section.
The stellar association around Gamma Velorum and its relationship with Vela OB2
Creators: name: Jeffries, R. D
name: Naylor, Tim
name: Walter, F. M.
name: Pozzo, M. P.
name: Devey, C. R.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present the results of a photometric BVI survey of 0.9 square degrees around the Wolf-Rayet binary gamma^2 Vel and its early-type companion gamma^1 Vel. Several hundred PMS stars are identified and the youth of a subset of these is confirmed by the presence of lithium, H-alpha emission and X-ray activity. We show that the PMS stars are kinematically coherent and spatially concentrated around gamma Vel. The PMS stars have similar proper motions to gamma Vel, to main-sequence stars around gammaVel and to early-type stars of the wider Vela OB2 association of which gamma^2 Vel is the brightest member. The ratio of main-sequence stars to low-mass (0.1-0.6 Msun) PMS stars is consistent with a Kroupa mass function. Main-sequence fitting to stars around gamma Vel gives a distance modulus of 7.76+/-0.07 mag, consistent with a similarly-determined distance for Vela OB2 and with interferometric distances to gamma^2 Vel. High-mass stellar models indicate an age of 3-4 Myr for gamma^2 Vel, but the low-mass PMS stars have ages of ~10 Myr according to low-mass evolutionary models and 5-10 Myr by empirically placing them in an age sequence with other clusters based on colour-magnitude diagrams and lithium depletion. We conclude that the low-mass PMS stars form a genuine association with gamma Vel and that this is a subcluster within the larger Vela OB2 association. We speculate that gamma^2 Vel formed after the low-mass stars, expelling gas, terminating star formation and unbinding the association. The velocity dispersion of the PMS stars is too low for this star forming event to have produced all the stars in Vela OB2. Instead, star formation must have started at several sites within a molecular cloud, either sequentially or, simultaneously after some triggering event [abridged].
description: Accepted for publication in MNRAS
PDFed: Privacy-Preserving and Decentralized Asynchronous Federated Learning for Diffusion Models
Creators: name: Balan, Kar
name: Gilbert, Andrew
name: Collomosse, John
Publisher: name: arXiv
Year: 2024
Subjects: subject: Image and Video Processing (eess.IV)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: We present PDFed, a decentralized, aggregator-free, and asynchronous federated learning protocol for training image diffusion models using a public blockchain. In general, diffusion models are prone to memorization of training data, raising privacy and ethical concerns (e.g., regurgitation of private training data in generated images). Federated learning (FL) offers a partial solution via collaborative model training across distributed nodes that safeguard local data privacy. PDFed proposes a novel sample-based score that measures the novelty and quality of generated samples, incorporating these into a blockchain-based federated learning protocol that we show reduces private data memorization in the collaboratively trained model. In addition, PDFed enables asynchronous collaboration among participants with varying hardware capabilities, facilitating broader participation. The protocol records the provenance of AI models, improving transparency and auditability, while also considering automated incentive and reward mechanisms for participants. PDFed aims to empower artists and creators by protecting the privacy of creative works and enabling decentralized, peer-to-peer collaboration. The protocol positively impacts the creative economy by opening up novel revenue streams and fostering innovative ways for artists to benefit from their contributions to the AI space.
description: Accepted to CM SIGGRAPH European Conference on Visual Media Production 2024
Parton energy loss in a classical strongly coupled QGP
Creators: name: Dusling, Kevin
name: Zahed, Ismail
Publisher: name: arXiv
Year: 2009
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We investigate the energy loss of heavy quarks in the gas, liquid and solid phase of a classical quark-gluon plasma (cQGP) using molecular dynamics simulations. The model consists of massive quarks and gluons interacting as a classical non-relativistic colored Coulomb gas. We show that the electric force decorrelates on a short time scale causing the energy loss to be mostly diffusive and langevin-like in the cQGP. We find that the drag coefficient changes with the heavy quark mass, while the diffusion constant does not. The fractional collisional energy loss is much larger than the leading order estimates from a wQGP because of the core repulsion. Following recent suggestions, we show how the cQGP results can be translated to the sQGP results in the $T=(1-3)T_c$ range.
description: 17 pages, 13 figures, corrected minor typos
MPO Negatively Regulates Neutrophil-EC Interactions By Impairing αMß2 Integrin in Sterile Inflammation
Creators: name: Tseng, Alan
Publisher: name: University of Illinois at Chicago
Year: 2021
Subjects: Uncategorized

description: Interactions between neutrophils with platelets and endothelial cells (ECs) contribute to vascular occlusion and tissue damage in sterile inflammatory conditions. However, the molecular mechanisms underlying the cell-cell interactions are not fully understood. Previous studies show that reactive oxygen species (ROS), such as hydrogen peroxide (H2O2), modulate neutrophil αMβ2 integrin function and play a role in mediating platelet-neutrophil heterotypic interactions. In this study, we further characterize a role for myeloperoxidase (MPO) in regulating neutrophil adhesive function through αMβ2 integrin. Using real-time fluorescence intravital microscopy and in vitro assays, we found that loss of MPO enhanced neutrophil-EC interactions and subsequent neutrophil transmigration under inflammatory conditions but did not affect neutrophil-platelet interactions. Using both genetic and pharmacologic approaches, we showed that following activation, MPO KO neutrophils had enhanced extracellular H2O2 production and increased surface level of αMβ2 integrin and that these effects were dependent on MPO activity. Our in vivo studies using a hepatic ischemia/reperfusion-induced inflammation model found that compared to WT mice, neutrophils from MPO KO mice had a pro-migratory phenotype while tissue damage was reduced. These results indicate that under sterile inflammatory conditions, MPO plays a negative role in the adhesive and migratory function of neutrophils by diminishing αMβ2 integrin function.
A NOVEL EXTENSION OF INVERSE EXPONENTIAL DISTRIBUTIONS: A HEAVY-TAILED MODEL WITH UPSIDE DOWN BATHTUB SHAPED HAZARD RATE
Creators: name: Jabir Bengalath
name: Punathumparambath, Bindu
Publisher: name: Reliability: Theory & Applications
Year: 2023
Subjects: Inverse Exponential distribution
Modi Inverse Exponential distribution
Moments
Tail Behaviour
Order Statistics
Parameter estimation

description: Heavy-tailed distributions have garnered interest due to their advantageous statistical and reliability characteristics, rendering them valuable in applied fields such as economics, finance, and risk management. Such distributions offer robust properties, making them pertinent to studies in various areas like econometrics, statistics, and insurance. Thus, the primary objective of this paper is to propose a Two parameter right skewedupside down bathtub type, heavy tailed distribution, which is a generalisation of Inverse Exponential distribution and is referred to as Modi Inverse Exponential distribution. We derive several mathematical and statistical features, including quantile function, mode, median, skewness, kurtosis, and mean deviation. Additionally, the reliability and hazard rate functions are also derived. Stochastic ordering and order statistics of the proposed distribution were derived. We also investigate the tail behaviour of the proposed model. Furthermore, estimation methods such as maximum likelihood estimation and its asymptotic confidence bound, percentile method, and Cramer-von-Mises method were examined. To demonstrate the appropriateness of the suggested model, we have considered two distinct real datasets along with three distinct models and concluded that the proposed model is more adaptable.
Optimal Supervisory Control of Hybrid Vehicles
Creators: name: Cerofolini, Alberto <1984>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2014
Subjects: ING-IND/08 Macchine a fluido

description: Hybrid vehicles (HV), comprising a conventional ICE-based powertrain and a secondary energy source, to be converted into mechanical power as well, represent a well-established alternative to substantially reduce both fuel consumption and tailpipe emissions of passenger cars.
Several HV architectures are either being studied or already available on market, e.g. Mechanical, Electric, Hydraulic and Pneumatic Hybrid Vehicles. Among the others, Electric (HEV) and Mechanical (HSF-HV) parallel Hybrid configurations are examined throughout this Thesis.
To fully exploit the HVs potential, an optimal choice of the hybrid components to be installed must be properly designed, while an effective Supervisory Control must be adopted to coordinate the way the different power sources are managed and how they interact.
Real-time controllers can be derived starting from the obtained optimal benchmark results. However, the application of these powerful instruments require a simplified and yet reliable and accurate model of the hybrid vehicle system. This can be a complex task, especially when the complexity of the system grows, i.e. a HSF-HV system assessed in this Thesis.
The first task of the following dissertation is to establish the optimal modeling approach for an innovative and promising mechanical hybrid vehicle architecture. It will be shown how the chosen modeling paradigm can affect the goodness and the amount of computational effort of the solution, using an optimization technique based on Dynamic Programming.
The second goal concerns the control of pollutant emissions in a parallel Diesel-HEV. The emissions level obtained under real world driving conditions is substantially higher than the usual result obtained in a homologation cycle. For this reason, an on-line control strategy capable of guaranteeing the respect of the desired emissions level, while minimizing fuel consumption and avoiding excessive battery depletion is the target of the corresponding section of the Thesis.
Enhanced Born Charge and Proximity to Ferroelectricity in Thallium Halides
Creators: name: Du, M. H.
name: Singh, D. J.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Electronic structure and lattice dynamics calculations on thallium halides show that the Born effective charges in these compounds are more than twice larger than the nominal ionic charges. This is a result of cross-band-gap hybridization between Tl-p and halogen-p states. The large Born charges cause giant splitting between longitudinal and transverse optic phonon modes, bringing the lattice close to ferroelectric instability. Our calculations indeed show spontaneous lattice polarization upon lattice expansion starting at 2%. It is remarkable that the apparently ionic thallium halides with a simple cubic CsCl structure and large differences in electronegativity between cations and anions can be very close to ferroelectricity. This can lead to effective screening of defects and impurities that would otherwise be strong carrier traps and may therefore contribute to the relatively good carrier transport properties in TlBr radiation detectors.
description: PDF only
A NOVEL METHODOLOGY IN DEVELOPING STRESSSTRENGTH RELIABILITY MODEL FOR WEIBULL DISTRIBUTION: A COMPARISON OF ARTIFICIAL NEURAL NETWORK (ANN) AND RESPONSE SURFACE ANALYSIS (RSA)
Creators: name: Saurabh L. Raikar
name: Gaonkar, Rajesh S. Prabhu
Publisher: name: Reliability: Theory & Applications
Year: 2023
Subjects: Weibull distribution
stress strength interference
reliability
ANN
RSM

description: Stress strength interference theory is widely used in evaluating the reliability of mechanical components. Various interference models have been developed when stress and strength follow a wide range of distributions. But when stress and strength follow Weibull distribution, a closed form of interference model is not available. This paper deals with developing a methodology for obtaining a closed form interference model for a given application when the stress and strength follow Weibull distribution. The method of artificial neural network (ANN) and response surface analysis (RSA) are used in modelling and analysis. The validation experiment has been conducted and the error obtained shows that the proposed methodology performs reasonably well.
Low-temperature gas opacity - AESOPUS: a versatile and quick computational tool
Creators: name: Marigo, Paola
name: Aringer, Bernhard
Publisher: name: arXiv
Year: 2009
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We introduce a new tool - AESOPUS: Accurate Equation of State and OPacity Utility Software - for computing the equation of state and the Rosseland mean (RM) opacities of matter in the ideal gas phase. Results are given as a function of one pair of state variables, (i.e. temperature T in the range 3.2 <= log(T) <= 4.5, and parameter R= rho/(T/10^6 K)^3 in the range -8 <= log(R) <= 1), and arbitrary chemical mixture. The chemistry is presently solved for about 800 species, consisting of almost 300 atomic and 500 molecular species. The gas opacities account for many continuum and discrete sources, including atomic opacities, molecular absorption bands, and collision-induced absorption. Several tests made on AESOPUS have proved that the new opacity tool is accurate in the results,flexible in the management of the input prescriptions, and agile in terms of computational time requirement. We set up a web-interface (http://stev.oapd.inaf.it/aesopus) which enables the user to compute and shortly retrieve RM opacity tables according to his/her specific needs, allowing a full degree of freedom in specifying the chemical composition of the gas. Useful applications may regard RM opacities of gas mixtures with i) scaled-solar abundances of metals, choosing among various solar mixture compilations available in the literature; ii) varying CNO abundances, suitable for evolutionary models of red and asymptotic giant branch stars and massive stars in the Wolf-Rayet stages; iii) various degrees of enhancement in alpha-elements, and C-N, Na-O and Mg-Al abundance anti-correlations, necessary to properly describe the properties of stars in early-type galaxies and Galactic globular clusters; iv) zero-metal abundances appropriate for studies of gas opacity in primordial conditions.
description: 32 pages, 34 postscript figures, A&A in press; new section 4.1.2 showing first tests with stellar models, sections 2.2, 2.2.2 and 5 expanded; interactive web-page at http://stev.oapd.inaf.it/aesopus
Holography and Fermions at a Finite Chemical Potential
Creators: name: Brits, Lionel
name: Rozali, Moshe
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We review the Sakai-Sugimoto model of holographic QCD at zero temperature and finite chemical potential, comparing the results to those expected at large-$N_c$ QCD, and those in a closely related holographic model. We find that as the baryon chemical potential is increased above a critical value, there is a phase transition to a nuclear matter phase, the details of which depend on the model. We argue that the nuclear matter phase is necessarily inhomogeneous to arbitrarily high density, which suggests an explanation of the "chiral density wave" instability of the quark Fermi surface in large-$N_c$ QCD. Some details of the instanton distribution in the holographic dual are reminiscent of a Fermi surface. This short manuscript summarizes a talk given by M.R. at "Theory Canada 4" conference, and is based largely (but not entirely) on the results of \cite{Rozalietal2008}.
description: 11 pages, 1 figure
A Schema-Based Account of a Negativity Bias in Collective Future Thinking
Creators: name: Shrikanth, Sushmita
Publisher: name: University of Illinois at Chicago
Year: 2021
Subjects: Uncategorized

description: Robust evidence suggests that personal and collective future thinking are dissociable by valence, yet there lacks a theoretical basis for these findings. Presently, a false memory paradigm was used to test whether people possess a negatively-biased collective schema that renders negative news information more familiar compared to positive news information. Though Experiment 1 were non-significant, Experiments 2 and 3 found people displayed better memory for negative news headlines, while false alarm rates for negative news headlines emerged after a delay. Further, people tended to remember more positive life-script information, aligning with the previously found valence-based dissociation between personal and collective prospection. Findings are interpreted within a schema theory framework, and future directions are discussed.
title: Imagining machine vision: Four visual registers from the Chinese AI industry
Creators: name: De Seta, Gabriele
name: Shchetvina, Anya
Publisher: name: Humboldt-Universität zu Berlin
Year: 2023
Subjects: subject: Artificial intelligence
subject: China
subject: Machine vision
subject: Sociotechnical imaginaries
subject: Tech industry
subject: Visual culture
subject: 000 Informatik, Informationswissenschaft, allgemeine Werke

description: Machine vision is one of the main applications of artificial intelligence. In China, the machine vision industry makes up more than a third of the national AI market, and technologies like face recognition, object tracking and automated driving play a central role in surveillance systems and social governance projects relying on the large-scale collection and processing of sensor data. Like other novel articulations of technology and society, machine vision is defined, developed and explained by different actors through the work of imagination. In this article, we draw on the concept of sociotechnical imaginaries to understand how Chinese companies represent machine vision. Through a qualitative multimodal analysis of the corporate websites of leading industry players, we identify a cohesive sociotechnical imaginary of machine vision, and explain how four distinct visual registers contribute to its articulation. These four registers, which we call computational abstraction , human–machine coordination , smooth everyday , and dashboard realism , allow Chinese tech companies to articulate their global ambitions and competitiveness through narrow and opaque representations of machine vision technologies.
Deep Extragalactic VIsible Legacy Survey (DEVILS): DR1 Blended Spectra Search for Candidate Strong Gravitational Lenses
Creators: name: Holwerda, B. W.
name: Knabel, S.
name: Thorne, J. E
name: Bellstedt, S.
name: Siudek, M.
name: Davies, L. J. M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Here, we present a catalog of blended spectra in Data Release 1 of the Deep Extragalactic VIsible Legacy Survey (DEVILS) on the Anglo-Australian Telescope (AAT). Of the 23197 spectra, 181 showed signs of a blend of redshifts and spectral templates. We examine these blends in detail for signs of either a candidate strong lensing galaxy or a useful overlapping galaxy pair. One of the three DEVILS target fields, COSMOS (D10) is close to complete and it is fully imaged with Hubble Space Telescope Advanced Camera for Surveys (HST/ACS) and we visually examine the 57 blended spectra in this field in the F814W postage stamps. Nine are classical strong lensing candidates with an elliptical as the lens, out to higher redshifts than any previous search with spectroscopic surveys such as SDSS or GAMA. The gravitational lens candidate success rate similar to earlier such searches (0.1%). Strong gravitational lenses identified with blended spectroscopy have typically shown a high success rate (>70%) which make these interesting targets for future higher resolution lensing studies, monitoring for supernovae cosmography, or searches for magnified atomic hydrogen signal.
description: 25 pages, 10 figures, 6 tables, v2 fixed figure 1 and 2 mislabeling
First- order versus unconventional phase transitions in three-dimensional dimer models
Creators: name: Papanikolaou, Stefanos
name: Betouras, Joseph J.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study the phase transition between the Coulomb liquid and the columnar crystal in the 3D classical dimer model, which was found to be continuous in the O(3) universality class. In addition to nearest neighbor interactions which favor parallel dimers, further neighbor interactions are allowed in such a manner that the cubic symmetry of the original system remains intact. We show that the transition in the presence of weak additional, symmetry preserving interactions is first-order. However the universality class of the transition remains continuous when the additional interactions are weakly repulsive. In this way, we verify the existence of a multicritical point near the unperturbed transition and we identify a critical line of unconventional transitions between the Coulomb liquid phase and the $6-$fold columnar phase.
description: added supplementary material; changes throughout the manuscript (to appear in Phys. Rev. Letters)
ระบบนำส่งยาสู่เป้าหมาย
Creators: name: จุไรรัตน์ นันทานิช
Publisher: name: คณะเภสัชศาสตร์/สำนักพิมพ์ต้นตำรับ
Year: 2545
Subjects: ระบบนำส่งยาสู่เป้าหมาย,นาโนพาร์ติเคิล, ไลโบโซม,โปรดรักส์

description: 1 (May-Sep), 1, ไทยไภษัชยนิพนธ์
title: Rental revival?: Exploring the potential implications of applying residential rental tenure zoning in Metro Vancouver
Creators: name: Scott-Iversen, Erian
Publisher: name: Electronic version published by Vancouver Island University
Year: 2019
Subjects: subject: Rental housing--British Columbia--Metro Vancouver
subject: Zoning--British Columbia--Metro Vancouver
subject: City planning--British Columbia--Metro Vancouver

description: In a region like Metro Vancouver, where housing costs have recently risen faster than household incomes, an affordable housing supply is necessary to ensure safe, secure housing is available to all residents. Local governments are at the forefront of the housing crisis and are exploring ways of diversifying housing options to address current and anticipated housing needs in their communities. The introduction of residential rental tenure zoning (rental zoning) may provide an innovative way for local governments to do this. This research explores the potential implications of applying rental zoning in Metro Vancouver by interviewing municipal planners from six different local governments within the Lower Mainland. Ultimately, the findings of this research suggest that the application of rental zoning may help local governments address some of their rental housing objectives, but this tool in and of itself is not a panacea to the region’s housing crisis.
A geometric derivation of KdV-type hierarchies from root systems
Creators: name: Kiselev, Arthemy V.
name: van de Leur, Johan W.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences
subject: 17B80, 37K05, 37K30

description: For the root system of each complex semi-simple Lie algebra of rank two, and for the associated 2D Toda chain $E=\{u_{xy}=\exp(K u)\}$, we calculate the two first integrals of the characteristic equation $D_y(w)=0$ on $E$. Using the integrals, we reconstruct and make coordinate-independent the $(2\times 2)$-matrix operators $\square$ in total derivatives that factor symmetries of the chains. Writing other factorizations that involve the operators $\square$, we obtain pairs of compatible Hamiltonian operators that produce KdV-type hierarchies of symmetries for $\cE$. Having thus reduced the problem to the Hamiltonian case, we calculate the Lie-type brackets, transferred from the commutators of the symmetries in the images of the operators $\square$ onto their domains. With all this, we describe the generators and derive all the commutation relations in the symmetry algebras of the 2D Toda chains, which serve here as an illustration for a much more general algebraic and geometric set-up.
description: Proc. 4th International workshop `Group analysis of differential equations and integrable systems' (Protaras, Cyprus, October 26-29, 2008), 19 pages.
A PENTAGONAL FUZZY-BASED SOLUTION OF MULTIPLE OBJECTIVE LPP
Creators: name: Junaid Basha, M.
name: Nandhini S.
name: Fataf, Nur Aisyah Abdul
Publisher: name: Reliability: Theory & Applications
Year: 2023
Subjects: pentagonal fuzzy number
triangular fuzzy number
MOLPP
Defuzzified mean of maxima

description: In this paper, the researchers compare proposed approach and Excel solver. In this proposed technique, the researchers converted fuzzy multiple objective linear programming problems (FMOLPP) into multiple objective linear programming problems (MOLPP) with the help of Defuzzified mean of maxima method. Before that, the researchers changed the pentagonal fuzzy numerical valuation to a triangular fuzzy value by using the proposed theorem. Further, the crisp value of MOLPP is solved using standard simplex algorithms. Then the outcomes of the optimal solutions are compared with both the results.
Intermittency and roughening in the failure of brittle heterogeneous materials
Creators: name: Bonamy, D.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Stress enhancement in the vicinity of brittle cracks makes the macro-scale failure properties extremely sensitive to the micro-scale material disorder. Therefore: (i) Fracturing systems often display a jerky dynamics, so-called crackling noise, with seemingly random sudden energy release spanning over a broad range of scales, reminiscent of earthquakes; (ii) Fracture surfaces exhibit roughness at scales much larger than that of material micro-structure. Here, I provide a critical review of experiments and simulations performed in this context, highlighting the existence of universal scaling features, independent of both the material and the loading conditions, reminiscent of critical phenomena. I finally discuss recent stochastic descriptions of crack growth in brittle disordered media that seem to capture qualitatively - and sometimes quantitatively - these scaling features.
description: 38 pages, invited review for J. Phys. D cluster issue on "Fracture: from the Atomic to the Geophysics Scale"
APPLICATION OF MACHINE LEARNING ALGORITHMS IN THE PROBLEMS OF IMPROVING MODE RELIABILITY OF MODERN POWER SYSTEMS
Creators: name: Kurbatsky, Viktor
name: Huseyngulu Guliyev
name: Tomin, Nikita
name: Famil Ibrahimov
name: Nijat Huseynov
Publisher: name: Reliability: Theory & Applications
Year: 2023
Subjects: power system
electric power system
artificial intelligence
machine learning
operational control of power system modes
mode prediction
artificial neural network
voltage and reactive power regulation

description: In order to increase the regime reliability of energy systems, the experience of applying machine learning algorithms and models for various issues of operative-dispatching and counter-accident management was reviewed. It is indicated that an effective solution to this problem is the use of machine learning algorithms and models that are able to learn to predict and control the operating modes of the power system, taking into account many changing influencing factors. The experience of using machine learning technology in the tasks of operational dispatch and emergency control of EPS is presented, which clearly shows the prospects of such studies for subsequent practical implementation in the work of various automated control systems for electric power networks of power systems. Until recently, models based on neural network structures have remained the most popular among machine approaches in predictive problems. The advantages of using this structure are shown, first of all, by the fact that the neural network structure makes it possible to obtain models with good approximating abilities. A comparative analysis of the effectiveness of various models in predicting electricity consumption is given. The issues of voltage and reactive power regulation in the electrical network of power systems using an artificial neural network are considered and the effectiveness of this approach is shown. A model and algorithm for estimating voltage stability in power system nodes under various influencing factors is proposed, as well as results are presented that confirm the reliability of the results obtained.
title: Spatiotemporal wavevector dynamics of transverse mode-locked beams
Creators: name: Wichmann, Jan
name: Zwilich, Michael
name: Fallnich, Carsten
Publisher: name: University of Muenster, Institutional Repository MIAMI
Year: 2025
Subjects: subject: 530 Physics

description: The phase-locking of transverse higher-order resonator modes results in a beam with rapidly oscillating spatial intensity profile. To complete the description of such transverse mode-locked (TML) beams, their spatiotemporal phase dynamics are explored in this work. The analysis of the phase terms of TML beams reveals oscillating wavevectors, which are experimentally verified by exploiting the mode-matching requirement of a single-mode fiber. The wavevector oscillation is further quantified by exploring its dependence on beam size. The findings have to be considered in potential future applications of TML beams in phase-sensitive processes.
description: Finanziert durch den Open-Access-Publikationsfonds der Universität Münster.
Managing Multi-Class Traffic in Cellular Networks
Creators: name: Kumble, Anusha Chandrashekar
Publisher: name: University of Illinois at Chicago
Year: 2021
Subjects: Uncategorized

description: Large volumes of diverse traffic in today's cellular network compete for scarce cellular bandwidth. Many mobile applications demand for bandwidth irrespective of their severity. As the in-network support for traffic prioritization is limited, it is very much necessary to develop a traffic management mechanism that can prioritize diverse traffic as well as utilizes the cellular bandwidth to maximum. This work investigates cellular networks and the process of resource allocation for TCP traffic of varying time-sensitivities. We propose two design procedures that can prioritize traffic while making maximum utilization of the cellular bandwidth.
title: Diagnóstico diferencial de las lesiones calcificadas de las superficies falángicas: algo más que exostosis.
Creators: name: Gallardo Agromayor, Elena
Publisher: name: Sociedad Española de Radiología Médica
Year: 2014
Subjects: subject: Musculoskeletal soft tissue

description: Objetivo docente
Revisión del tema
Conclusiones
Bibliografía
description: Objetivo docente:
Mostrar las diferentes entidades que pueden cursar como bultomas calcificados en los dedos. Proponer un diagnóstico diferencial basado en su localización y características con las diferentes técnicas de imagen. Aportación de la ecografía en el...
Dimensional reduction of electromagnetism
Creators: name: Maggi, Rocco
name: Ercolessi, Elisa
name: Facchi, Paolo
name: Marmo, Giuseppe
name: Pascazio, Saverio
name: Pepe, Francesco V.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Classical Physics (physics.class-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We derive one- and two-dimensional models for classical electromagnetism by making use of Hadamard's method of descent. Low-dimensional electromagnetism is conceived as a specialization of the higher dimensional one, in which the fields are uniform along the additional spatial directions. This strategy yields two independent electromagnetisms in two spatial coordinates, and four independent electromagnetisms in one spatial coordinate.
description: 17 pages, 5 figures
New Physics in Double Higgs Production at NLO
Creators: name: Huang, Bo-Yan
Publisher: name: University of Illinois at Chicago
Year: 2021
Subjects: Uncategorized

description: After observing the Higgs boson by the ATLAS and CMS experiments at the LHC, accurate measurements of its properties, which allow us to study the electroweak symmetry breaking mechanism, become a high priority for particle physics. The most promising of extracting the Higgs self-coupling at hadron colliders is by examining the double Higgs production, especially in the $\bbgg$ channel. In this work, we presented full loop calculation for both SM and New Physics effects of the Higgs pair production to next-to-leading-order (NLO), including loop-induced processes $gg\to HH$, $gg\to HHg$, and $qg \to qHH$. We also included the calculation of the corrections from diagrams with only one QCD coupling in $qg \to qHH$, which was neglected in the previous studies. With the latest observed limit on the HH production cross-section, we studied the constraints on the effective Higgs couplings for the LHC at center-of-mass energies of 14 TeV and a provisional 100 TeV proton collider within the Future-Circular-Collider (FCC) project. To obtain results better than using total cross-section alone, we focused on the $\bbgg$ channel and divided the differential cross-section into low and high bins based on the total invariant mass and $p_{T}$ spectra. The new physics effects are further constrained by including extra kinematic information. However, some degeneracy persists, as shown in previous studies, especially in determining the Higgs trilinear coupling. Our analysis shows that the degeneracy is reduced by including the full NLO corrections.
Photoionized features in the X-ray spectrum of EX Hydrae
Creators: name: Luna, G. J. M.
name: Raymond, J. C.
name: Brickhouse, N. S.
name: Mauche, C. W.
name: Proga, D.
name: Steeghs, D.
name: Hoogerwerf, R.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present the first results from a long (496 ks) Chandra High Energy Transmission Grating observation of the intermediate polar EX Hydrae. In addition to the narrow emission lines from the cooling post-shock gas, for the first time we have detected a broad component in some of the X-ray emission lines, namely O VIII 18.97, Mg XII 8.42, Si XIV 6.18, and Fe XVII 16.78. The broad and narrow components have widths of ~ 1600 km s^-1 and ~ 150 km s^-1, respectively. We propose a scenario where the broad component is formed in the pre-shock accretion flow, photoionized by radiation from the post-shock flow. Because the photoionized region has to be close to the radiation source in order to produce strong photoionized emission lines from ions like O VIII, Fe XVII, Mg XII, and Si XIV, our photoionization model constrains the height of the standing shock above the white dwarf surface. Thus, the X-ray spectrum from EX Hya manifests features of both magnetic and non-magnetic cataclysmic variables.
description: accepted in The Astrophysical Journal
The Influence of Childhood Obesity on Oral Inflammation
Creators: name: Silver, Chad M
Publisher: name: University of Illinois at Chicago
Year: 2021
Subjects: Uncategorized

description: Hypothesis and Objective: In the United States, approximately one-third of all children are estimated to be overweight or obese. Childhood obesity is argued to have a number of effects on the oral cavity, including poorer oral hygiene and earlier dental development. Current knowledge on the association of periodontal inflammatory environment and childhood obesity is limited. The purpose of this study was to evaluate whether obese children have a higher levels of pro-inflammatory cytokines, an indicator of localized oral inflammation, compared to normal weight children. Methods: 20 pediatric patients aged 10-12 years were recruited from University of Illinois-Chicago post-graduate dental clinic. Height and weight was used to determine BMI (>95th percentile: Obese, n=10; 5th-85th percentile: normal, n=10). Gingival crevicular fluid was collected from each subject. Cytokine/chemokine levels (IL-1β, IL-6, IL-8, IL-10, CCL2, CCL3, MPO and TNF-α) were measured by multiplex bead assay. Data were analyzed using two-sample T-tests. Results: When cytokine levels were compared across between obese and normal weight subjects, IL8, IL10, CCL2, and CCL3 were statistically significantly higher in obese children compared to non-obese children at α<0.05. A Bonferroni correction for multiple testing yielded a significance cut-off of α<0.006. After correcting for multiple testing, only CCL2 and CCL3 remain statistically significant. Conclusions: Our results suggest that obese children have significantly higher levels of tested pro-inflammatory cytokines compared to normal weight children, indicating that they have markedly higher oral inflammation, which may be related to poor oral hygiene. Further work is needed to correlate increased oral inflammation with oral health outcomes and oral microbiome composition in children.
ASSESSMENT OF GENERALIZED LIFETIME PERFORMANCE INDEX FOR LINDLEY DISTRIBUTION USING PROGRESSIVE TYPE-II SAMPLES
Creators: name: Abhimanyu S. Yadav
name: Saha, Mahendra
name: Amartya Bhattacharya
name: Arindam Gupta
Publisher: name: Reliability: Theory & Applications
Year: 2023
Subjects: Bayesian estimation
Metropolis-Hastings method
Process Capability Index
Maximum likelihood estimator

description: A meaningful subject of discourse in manufacturing industries is the assessment of the lifetime performance index. In manufacturing industries, the lifetime performance index is used to measure the performance of the product. A generalized lifetime performance index (GLPI) is defined by taking into consideration the median of the process measurement when the lifetime of products follow a parametric distribution may serve better the need of quality engineers and scientists in industry. The present study constructs various point estimators of the GLPI based on progressive type II right censored data for the Lindley distributed lifetime in both classical and Bayesian setup. We perform Monte Carlo simulations to compare the performances of the maximum likelihood and Bayes estimates with a gamma prior of CY(L) under progressive type-II right censoring scheme. Finally, the validity of the model is adjudged through analysis of a data set.
title: Es necesaria la tc perfusión en la deteccion de la penumbra con el fin de decidir rescate endovascular en pacientes con ictus isquémico agudo?
Creators: name: Pineda Ibarra, Camilo
Publisher: name: Sociedad Española de Radiología Médica
Year: 2014
Subjects: subject: Neuroradiology brain
subject: CT
subject: CT-Angiography
subject: Ischaemia / Infarction

description: Objetivos
Material y método
Resultados
Conclusiones
Bibliografía
description: Objetivos:
En los pacientes que presentan un ictus isquémico agudo mayor a 4,5 horas de inicio de los síntomas,
el uso de técnicas de imagen es fundamental para la detección del parénquima cerebral salvable y la selección de pacientes para el tratamiento...
Scaling of singular structures in extensional flow of dilute polymer solutions
Creators: name: Becherer, Paul
name: Morozov, Alexander N.
name: van Saarloos, Wim
Publisher: name: arXiv
Year: 2009
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Recently singular solutions have been discovered in purely elongational flows of visco-elastic fluids. We surmise that these solutions are the mathematical structures underlying the so-called birefringent strands seen experimentally. In order to facilitate future experimental studies of these we derive a number of asymptotic results for the scaling of the width and extension of the near-singular structures in the FENE-P model for polymers of finite extensibility.
description: 16 pages, 8 figures
A TWO NON IDENTICAL UNITS COLD STANDBY SYSTEM WITH CORRELATED FAILURE TIME AND REPAIR MACHINE FAILURE
Creators: name: Chaudhary, Alka
name: Shivali Sharma
name: Sharma, Anika
Publisher: name: Reliability: Theory & Applications
Year: 2023
Subjects: Transition probabilities
mean sojourn time
bi-vairate exponential distribution
reliability
MTSF
availability
expected busy period of repairman
net expected profit

description: The paper deals with a system composed of two-non identical units (unit-1 and unit-2). Initially, unit-1 is operative and unit-2 is kept in cold standby. The cold standby unit can’t fail in its standby mode. Each unit of the system has two possible modes: Normal (N) and total failure (F). When the unit-1 fails the cold standby (unit-2) becomes operative instantaneously with the help of a perfect and instantaneous switching device. A single repairman is always available with the system to repair a failed unit and failed RM. Unit-1 gets priority in operation and repair over unit-2. However, the RM gets priority in repair over any of the units. The RM machine is good initially and can’t fail unless it becomes operative. The system failure occurs when both the units are in total failure mode. The joint distribution of failure and repair times for each unit is taken bivariate exponential distribution. Each repaired unit works as good as new. Using regenerative point technique, various important measures of system effectiveness have been obtained.
Galerkin Method of Regularized Stokeslets for Procedural Fluid Flow with Control Curves
Creators: name: Sugimoto, Ryusuke
name: Lait, Jeff
name: Batty, Christopher
name: Hachisuka, Toshiya
Publisher: name: arXiv
Year: 2024
Subjects: subject: Graphics (cs.GR)
subject: Numerical Analysis (math.NA)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: We present a new procedural incompressible velocity field authoring tool, which lets users design a volumetric flow by directly specifying velocity along control curves. Our method combines the Method of Regularized Stokeslets with Galerkin discretization. Based on the highly viscous Stokes flow assumption, we find the force along a given set of curves that satisfies the velocity constraints along them. We can then evaluate the velocity anywhere inside the surrounding infinite 2D or 3D domain. We also show the extension of our method to control the angular velocity along control curves. Compared to a collocation discretization, our method is not very sensitive to the vertex sampling rate along control curves and only requires a small linear system solve.
description: Accepted to ACM SIGGRAPH Asia 2024 Technical Communications. See https://rsugimoto.net/GalerkinMRS/ for updates
CHARACTERIZATION OF CHANDBHAS-P DISTRIBUTION AND ITS APPLICATIONS IN MEDICAL SCIENCE
Creators: name: Praseeja C.B.
name: Prasanth, C.B.
name: C. Subramanian
name: Unnikrishnan, T.
Publisher: name: Reliability: Theory & Applications
Year: 2023
Subjects: estimation
Survival analysis
two-parameter Sujatha distribution
Length biased distribution
data

description: The current research attempts the length biased version of new two-parameter Sujatha distribution, which is referred as ChandBhas-P Distribution (CBPD). Its different structural properties are discussed and the model parameters of this novel distribution are predicted by using the Maximum Likelihood Estimation. The distribution was examined with two real lifetime sets of data. The first set of data is birth weight of new born babies, randomly selected from a hospital at Thrissur, kerala and the second set is the weight of children of age range between three months to four years-collected from a few babysitting centres and play schools across Thrissur, and both are employed in order to discuss the goodness of fit.