cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
System size and energy dependence of the near-side of high-$p_T$ triggered di-hadron correlations in STAR
Creators: name: Nattrass, Christine
Publisher: name: arXiv
Year: 2010
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Previous studies have indicated that the near-side peak of high-pT triggered di-hadron correlations can be decomposed into two parts, a jet-like correlation and the ridge. We present data from Cu+Cu and Au+Au collisions at sqrt(sNN)=62 and 200 GeV, which should allow more robust tests of models. The jet-like correlation is narrow in both azimuth and pseudorapidity and has properties similar to those expected from vacuum fragmentation. The yield of particles in the jet-like correlation are presented for both systems and at both energies and compared to the yields expected from di-hadron correlations in PYTHIA 8.1. The ridge is narrow in azimuth but broad in pseudorapidity and roughly independent of pseudorapidity within STAR's acceptance. Attempts have been made to explain the production of the ridge component as coming from recombination, momentum kicks, Glasma flux tubes, and a plasma instability. However, few models have attempted to quantitatively calculate the characteristics of the ridge. The yield in the ridge is compared for all systems and energies. The implications for measurements at the LHC are discussed in context of the data and models.
description: 9 pages, 6 figures, proceedings for the 4th International Workshop on High-pT physics at LHC 09
title: Visualization of the Dynamic World of Individual Membrane Lesions in Live Electroporated Cells
Creators: name: Silkunas, Mantas
name: Pakhomov, Andrei G.
Publisher: name: Old Dominion University Libraries
Year: 2023

description: The phenomenon of cell electropermeabilization induced by applied electric fields (EF) has been known for several decades. However, due to the small size and dynamic response of individual membrane lesions to changes in EF, their visualization remains a challenging task. The lack of adequate tools for direct observation and tracking of these lesions hinders the investigation of electropermeabilization. To address this challenge, methodologies such as molecular dynamic simulations, artificial membrane and cellular models have been applied. However, several aspects of the phenomenon, including long-lasting membrane permeabilization, remain incompletely understood. In this study, we have developed a novel approach for detecting and monitoring individual electropores in live HEK293 cells. The method involves combining the whole-cell patch clamp technique on a cell attached to an indium tin oxide (ITO) surface and total internal reflection fluorescence (TIRF) imaging to visualize Ca2+ "puffs". Application of EF between a patch pipette and ITO surface induced membrane polarization to approximately -260 mV, followed by a sudden decrease in membrane resistance (indication of electroporation). The use of TIRF time-lapse imaging allowed for the identification and tracking of individual lesions at the membrane level in both time and space, while simultaneously recording the applied potential and corresponding current.

The applied EF created short-lived electropores (few milliseconds) as well as electropores that remained permeable to Ca2+ for over a minute. The respective changes in the transmembrane current corresponded to lesion conductance of 80-200 pS, suggesting that each puff represents an individual membrane pore. This study presents, for the first time, the visualization of individual electropores in live cells. The method provides a valuable tool for investigating the mechanisms of electropermeabilization and understanding the dynamics of individual electropores. Furthermore, it lays a foundation for future studies on electroporation using nanosecond EF pulses.
Lifetime measurements in $^{63}$Co and $^{65}$Co
Creators: name: Dijon, A.
name: Clément, E.
name: De France, G.
name: Van Isacker, P.
name: Ljungvall, J.
name: Görgen, A.
name: Obertelli, A.
name: Korten, W.
name: Gadea, A.
name: Gaudefroy, L.
name: Hackstein, M.
name: Mengoni, D.
name: Pissulla, Th.
name: Recchia, F.
name: Rejmund, M.
name: Rother, W.
name: Sahin, E.
name: Schmitt, C.
name: Shrivastava, A.
name: Valiente-Dobon, J. J.
name: Zell, K. O.
name: Zielinska, M.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Lifetimes of the $9/2^-_1$ and $3/2^-_1$ states in $^{63}$Co and the $9/2^-_1$ state in $^{65}$Co were measured using the recoil distance Doppler shift and the differential decay curve methods. The nuclei were populated by multi-nucleon transfer reactions in inverse kinematics. Gamma rays were measured with the EXOGAM Ge array and the recoiling fragments were fully identified using the large-acceptance VAMOS spectrometer. The E2 transition probabilities from the $3/2^-_1$ and $9/2^-_1$ states to the $7/2^-$ ground state could be extracted in $^{63}$Co as well as an upper limit for the $9/2^-_1\rightarrow7/2^-_1$ $B$(E2) value in $^{65}$Co. The experimental results were compared to large-scale shell-model calculations in the $pf$ and $pfg_{9/2}$ model spaces, allowing to draw conclusions on the single-particle or collective nature of the various states.
description: 8 pages, 8 figures, 1 table, accepted for publication in Physical Review C
An in-situ tunable radio-frequency quantum point contact
Creators: name: Müller, Thomas
name: Küng, Bruno
name: Studerus, Paul
name: Hellmüller, Sarah
name: Ensslin, Klaus
name: Ihn, Thomas
name: Reinwald, Matthias
name: Wegscheider, Werner
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Incorporating a variable capacitance diode into a radio-frequency matching circuit allows us to in-situ tune the resonance frequency of an RF quantum point contact, increasing the versatility of the latter as a fast charge sensor of a proximal quantum circuit. The performance of this method is compared in detail to conventional low-frequency charge detection. The approach is also applicable to other RF-detection schemes, such as RF-SET circuits.
description: 4 pages, 3 figures
Greywater reuse in agritourism destinations
Creators: name: Partanen, Sarah Bonnie
Publisher: name: University of British Columbia
Year: 2015

description: Though Canada has a perceived abundance of fresh water resources, they can be affected by localized drought, changing weather patterns and aging infrastructure. Greywater collected from sinks, baths, showers and washing machines can provide an alternate source of non-potable water, improving the security of fresh water resources in Canada. The agriculture sector is one area where greywater could be put to beneficial use. Farming at the rural-urban interface has been growing in popularity within North America, and provides farmers with new opportunities as they attract more visitors to the farm. Greywater reuse is one way farmers can address the challenge of how to manage the associated increased influx of wastewater. However, there is a lack of integrated research that explores the feasibility of using greywater as a water resource on farms at the rural-urban interface. There is also a lack of knowledge regarding farmers' perceptions and opinions of greywater reuse. Without this information, the barriers to greywater reuse on farms are unknown. This research undertook a feasibility study into the reuse of greywater at the UBC Farm in British Columbia, Canada. It explored feasibility from a technical, regulatory, and economic standpoint. A questionnaire was also developed and administered to farmers across BC as a way to discover the barriers to greywater reuse. It was found that the UBC Farm could generate enough greywater through produce washing operations to flush all the toilets in the proposed new farm centre throughout the summer months. The farm centre's roof provides the opportunity to capture enough rainwater to flush the toilets throughout the remainder of the year. The greywater treatment and distribution system becomes more economically feasible as the price of potable water increases. The questionnaire responses also highlighted that cost is a significant barrier to farmers' adoption of greywater reuse on their own farms. While most farmers saw the benefit of reusing water, they couldn't predict their customers' view of the practice. Farmers are unlikely to adopt a practice having the potential to hurt their business, so an awareness of customer perceptions will be required prior to their consideration of greywater reuse.
Unevenly-sampled signals: a general formalism of the Lomb-Scargle periodogram
Creators: name: Vio, R.
name: Andreani, P.
name: Biggs, A.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Mathematical Physics (math-ph)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Physical sciences

description: The periodogram is a popular tool that tests whether a signal consists only of noise or if it also includes other components. The main issue of this method is to define a critical detection threshold that allows identification of a component other than noise, when a peak in the periodogram exceeds it. In the case of signals sampled on a regular time grid, determination of such a threshold is relatively simple. When the sampling is uneven, however, things are more complicated. The most popular solution in this case is to use the "Lomb-Scargle" periodogram, but this method can be used only when the noise is the realization of a zero-mean, white (i.e. flat-spectrum) random process. In this paper, we present a general formalism based on matrix algebra, which permits analysis of the statistical properties of a periodogram independently of the characteristics of noise (e.g. colored and/or non-stationary), as well as the characteristics of sampling.
description: 10 pages, 11 figures, Astronomy and Astrophysics, in press
Ernst Mayr and Carl Sagan debate about the probability of intelligent life in the universe
Creators: name: Lemarchand, Guillermo A.
name: Mayr, Ernst
name: Sagan, Carl
Publisher: name: arXiv
Year: 2010
Subjects: subject: Popular Physics (physics.pop-ph)
subject: History and Philosophy of Physics (physics.hist-ph)
subject: FOS: Physical sciences

description: During the Second Iberoamerican Graduate School on Astrobiology interesting debates, between the experts from the biological and physical backgrounds, arose about the probability of the existence of extraterrestrial intelligent beings in the universe. For this reason, it is appropriate to reproduce -for the first time in Spanish- the debate on the subject conducted, in 1995, between Carl Sagan and Ernst Mayr. This debate was organized by Guillermo A. Lemarchand and published in the pages of two consecutive numbers of "Bioastronomy News". Here we reproduce the complete debate, including its original introduction.
description: In Spanish, 22 pages, UNESCO, ICTP, TWAS, Second Iberoamerican School on Astrobiology, Montevideo, Uruguay, Translation into Spanish of an original debate held on 1995 and edited by G.A. Lemarchand
title: The Alpha-1 Subunit of Membrane Na,K-ATPase Is Targeted by Nanosecond Electric Pulses
Creators: name: Silkuniene, Giedre
name: Uma Mangalanathan, Uma
name: Pakhomov, Andrei G.
name: Pakhomova, Olga N.
Publisher: name: Old Dominion University Libraries
Year: 2023

description: Electric pulses (EP) can modify the conformation of ion channels, potentially affecting membrane permeability. In our recent high-throughput screening of 328 gene knockouts (KOs) associated with membrane proteins in human monocytes U937, KO of Na,K-ATPase’s alpha 1 (ATP1A1) subunit was found to be less sensitive to nsEP (300ns, 7 kV/cm, at 20 Hz) - YoPro-1 (YP) uptake in ATP1A1 KO cells was up to 20% lower than control after 20 or 40 pulses. The subsequent experiments aimed to validate and further explore these findings. We measured YP uptake within 5 minutes after nsEP in ATP1A1 KO cells using time-lapse imaging on a scanning confocal microscope. YP fluorescence in ATP1A1 KO cells was 15% lower than in control cells, confirming the high-throughput screening results. We also used knock-down (KD) of ATP1A1 by transducing U937 cells with shRNA. In response to nsEP, YP uptake in ATP1A1 KD cells was reduced by 18% and 23% in high-throughput and confocal setups, respectively. Next, we tested whether the inhibition of Na,K-ATPase with ouabain affects YP uptake after nsEP. We found that the presence of ouabain did not reduce YP uptake after nsEP but increased it by 24%. Overall, our findings suggest that the role of ATP1A1 in YP uptake following nsEP exposure may be attributed to a structural feature of the protein rather than its physiological function as an ion pump.
Essays on public economics
Creators: name: Yang, Tzu-Ting
Publisher: name: University of British Columbia
Year: 2015

description: This dissertation applies various program evaluation techniques to examine both the intended and unintended consequences of government spending and regulation that affect family labor supply, children's healthcare utilization, and household saving behavior. Chapter 2 of this dissertation exploits the large and anticipated cash influx in the first quarter of the calendar year induced by the Earned Income Tax Credit (EITC) to estimate the causal effect of the receipt of a cash transfer on the timing of family labor supply. I find that income seasonality caused by EITC receipt induces changes in the intra-year labor supply patterns of married women. In contrast, the receipt of the EITC does not affect the timing of the labor supply of married men and single women. The subgroup analysis implies that my results are mainly driven by those from liquidity-constrained families and those who are secondary earners within their families. Chapter 3 exploits a sharp increase in patient cost-sharing at age 3 in Taiwan that results from young children "aging out" of the cost-sharing subsidy to examine the causal effect of cost sharing on the demand for young children's healthcare. It shows that the increase in the level of patient cost sharing at the 3rd birthday significantly reduces utilization of outpatient care. However, the utilization of inpatient care for young children does not respond to a change in cost sharing at the 3rd birthday. Chapter 4 exploits workplace pension reform in Taiwan to estimate the casual effect of workplace pension provision on the household saving rate. It shows that pension reform significantly reduces the prime-age (20-50) household saving rate by between 2.06 percentage points and imply that the degree of substitutability between workplace pensions and saving is about -0.50 to -0.60.
Activity of five WZ Sge-type systems in a few years after their outbursts
Creators: name: Pavlenko, E.
name: Antoniuk, O.
name: Antoniuk, K.
name: Andreev, M.
name: Samsonov, D.
name: Baklanov, A.
name: Golovin, A.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present results of observations and analysis of five WZ-type dwarf novae: SDSS J080434.20+510349.2, SDSS J102146.44+234926.3, V1108 Her, ASAS J0025 and WZ Sge in 3 - 7 years after their outbursts. We found: 1) the observational evidences that emerging of the white dwarf nonradial pulsation in SDSS J080434.20+510349.2 [1] is no longer a regular since 3-rd year after 2006 outburst; 2) the true value of orbital period for V1108 Her (0.05672 d) and mass ratio (0.09); 3) The main feature of quiescent light curves of ASAS J0025 is the high-amplitude quasiperiodical light variations probably originated in accretion disk; 4) in SDSS J102146.44+234926.3 in some occasions the brightness is modulated by period of 0.01367 day or with the multiple of it. The main brightness modulation of J080434.20+510349.2, V1108 Her and WZ Sge is the orbital one and has two-humped shape.
description: 17th European White Dwarf Workshop. AIP Conference Proceedings, Volume 1273, pp. 332-337 (2010). 6 pages; 6 figures
A SERVICE-ORIENTED ARCHITECTURE IMPLEMENTATION MODEL WITH COMPARATIVE STUDIES APPROACH: CASE STUDY OF BRANCHES OF QARZ-AL-HASANAH MEHR IRAN AND RESALAT BANKS
Creators: name: Darvishzadeh, Mohammad Ali
Publisher: name: TUENGR Group
Year: 2019
Subjects: Service-oriented architecture, Adoption area of SOA, maturation level of SOA, Authority levels of SOA, Structural Health Monitoring of management layer in applying SOA, Middleware application.

description: International Transaction Journal of Engineering, Management, & Applied Sciences & Technologies, 10, 2, 261-273
Discovery of "isolated" comoving T Tauri stars in Cepheus
Creators: name: Guillout, P.
name: Frasca, A.
name: Klutsch, A.
name: Marilli, E.
name: Montes, D.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: During the course of a large spectroscopic survey of X-ray active late-type stars in the solar neighbourhood, we discovered four lithium-rich stars packed within just a few degrees on the sky. These very young stars are projected several degrees away from the Cepheus-Cassiopea clouds, in front of an area void of interstellar matter. As such, they are very good "isolated" T Tauri star candidates. We acquired high-resolution optical spectra as well as photometric data allowing us to investigate in detail their nature and physical parameters with the aim of testing the "runaway" and "in-situ" formation scenarios. We derive accurate radial and rotational velocities and perform an automatic spectral classification. The spectral subtraction technique is used to infer chromospheric activity level in the H-alpha line core and clean the spectra of photospheric lines before measuring the equivalent width of the lithium absorption line. Both physical (lithium content, magnetic activity) and kinematical indicators show that all stars are very young (ages in the range 10-30 Myr). In particular, the spectral energy distribution of TYC4496-780-1 displays a strong near- and far-infrared excess, typical of T Tauri stars still surrounded by an accretion disc. They also share the same Galactic motion, proving that they form a homogeneous moving group of stars with the same origin. The most plausible explanation of how these "isolated" T Tauri stars formed is the "in-situ" model, although accurate distances are needed to clarify their connection with the Cepheus-Cassiopeia complex.
Magnetic Bose glass phases of coupled antiferromagnetic dimers with site dilution
Creators: name: Yu, Rong
name: Nohadani, Omid
name: Haas, Stephan
name: Roscilde, Tommaso
Publisher: name: arXiv
Year: 2010
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We numerically investigate the phase diagram of two-dimensional site-diluted coupled dimer systems in an external magnetic field. We show that this phase diagram is characterized by the presence of an extended Bose glass, not accessible to mean-field approximation, and stemming from the localization of two distinct species of bosonic quasiparticles appearing in the ground state. On the one hand, non-magnetic impurities doped into the dimer-singlet phase of a weakly coupled dimer system are known to free up local magnetic moments. The deviations of these local moments from full polarization along the field can be mapped onto a gas of bosonic quasiparticles, which undergo condensation in zero and very weak magnetic fields, corresponding to transverse long-range antiferromagnetic order. An increasing magnetic field lowers the density of such quasiparticles to a critical value at which a quantum phase transition occurs, corresponding to the quasiparticle localization on clusters of local magnets (dimers, trimers, etc.) and to the onset of a Bose glass. Strong finite-size quantum fluctuations hinder further depletion of quasiparticles from such clusters, and thus lead to the appearance of pseudo-plateaus in the magnetization curve of the system. On the other hand, site dilution hinders the field-induced Bose-Einstein condensation of triplet quasiparticles on the intact dimers, and it introduces instead a Bose glass of triplets. A thorough numerical investigation of the phase diagram for a planar system of coupled dimers shows that the two above-mentioned Bose glass phases are continuously connected, and they overlap in a finite region of parameter space, thus featuring a two-species Bose glass. The quantum phase transition from Bose glass to magnetic order in two dimensions is marked by novel universal exponents.
description: 15 pages, 16 figures
Additional file 25 of N6-methyladenosine RNA modification regulates strawberry fruit ripening in an ABA-dependent manner
Creators: name: Zhou, Leilei
name: Tang, Renkun
name: Li, Xiaojing
name: Tian, Shiping
name: Li, Bingbing
name: Qin, Guozheng
Publisher: name: figshare
Year: 2021
Subjects: subject: Biochemistry
subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Plant Biology

description: Additional file 25. Review history.
Inherent Time and Quantum-induced Reality; a Sequential Universe Model
Creators: name: Shotwell, Kenneth E.
Publisher: name: Zenodo
Year: 2023
Subjects: time, wave function collapse, quantum, universe, von-Neumann-Wigner, consciousness, decoherence, present

description: Time can be thought of as an inherent natural "refresh rate", born one imaginary segment at a time. Each present reality segment exhibits a seamless transition to the next segment, which then becomes part of history, each being the result of a segment-wide, continuously streaming, wave function collapse. The progression of time relative to its parent origin t=0 will be addressed theoretically, then by numerical calculation, within the limits of currently available parameters including the age and volume of the known universe, and estimates of the duration of wave function collapse. The goal is a calculable flow rate of time inherent within our universe; this is achieved, and shown to be credible, given the current estimated expansion rate of the known universe.
description: Author has engineering design experience in the aerospace, nuclear reactor vessel, fusion reactor chamber, and fiber-optics fields. Other published book and article titles by this author available on request.
Graded limits of minimal affinizations and Beyond: the multiplicty free case for type E6
Creators: name: Moura, Adriano
name: Pereira, Fernanda
Publisher: name: arXiv
Year: 2010
Subjects: subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 17B10, 17B70, 20G42

description: We obtain a graded character formula for certain graded modules for the current algebra over a simple Lie algebra of type E6. For certain values of their highest weight, these modules were conjectured to be isomorphic to the classical limit of the corresponding minimal affinizations of the associated quantum group. We prove that this is the case under further restrictions on the highest weight. Under another set of conditions on the highest weight, Chari and Greenstein have recently proved that they are projective objects of a full subcategory of the category of graded modules for the current algebra. Our formula applies to all of these projective modules.
description: 31 pages
Oil displacement through a porous medium with a temperature gradient
Creators: name: Oliveira, C. L. N.
name: Andrade, J. S.
name: Herrmann, H. J.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: We investigate the effect of a temperature gradient on oil recovery in a two-dimensional pore-network model. The oil viscosity depends on temperature as, $μ_o=exp(B/T)$, where $B$ is a physico-chemical parameter depending on the type of oil, and $T$ is the temperature. A temperature gradient is applied across the medium in the flow direction. Initially, the porous medium is saturated with oil and, then, another fluid is injected. We have considered two cases representing different injection strategies. In the first case, the invading fluid viscosity is constant (finite viscosity ratio) while in the second one, the invading fluid is inviscid (infinite viscosity ratio). Our results show that, for the case of finite viscosity ratio, recovery increases with $ΔT$ independently on strength or sign of the gradient. For an infinite viscosity ratio, a positive temperature gradient is necessary to enhance recovery. Moreover, we show that, for $ΔT>0$, the percentage of oil recovery generally decreases (increases) with $B$ for a finite (infinite) viscosity ratio. Finally, we also extend our results for infinite viscosity ratio to a three-dimensional porous media geometry.
Three essays of healthcare data-driven predictive modeling
Creators: name: Lou, Zhouyang
Publisher: name: Purdue University Graduate School
Year: 2023
Subjects: Other engineering not elsewhere classified
Modelling and simulation
Public health not elsewhere classified
Gastroenterology and hepatology
Health informatics and information systems
Aged health care

description: Predictive modeling in healthcare involves the development of data-driven and computational models which can predict what will happen, be it for a single individual or for an entire system. The adoption of predictive models can guide various stakeholders’ decision-making in the healthcare sector, and consequently improve individual outcomes and the cost-effectiveness of care. With the rapid development in healthcare of big data and the Internet of Things technologies, research in healthcare decision-making has grown in both importance and complexity. One of the complexities facing those who would build predictive models is heterogeneity of patient populations, clinical practices, and intervention outcomes, as well as from diverse health systems. There are many sub-domains in healthcare for which predictive modeling is useful such as disease risk modeling, clinical intelligence, pharmacovigilance, precision medicine, hospitalization process optimization, digital health, and preventive care. In my dissertation, I focus on predictive modeling for applications that fit into three broad and important domains of healthcare, namely clinical practice, public health, and healthcare system. In this dissertation, I present three papers that present a collection of predictive modeling studies to address the challenge of modeling heterogeneity in health care. The first paper presents a decision-tree model to address clinicians’ need to decide among various liver cirrhosis diagnosis strategies. The second paper presents a micro-simulation model to assess the impact on cardiovascular disease (CVD) to help decision makers at government agencies develop cost-effective food policies to prevent cardiovascular diseases, a public-health domain application. The third paper compares a set of data-driven prediction models, the best performing of which is paired together with interpretable machine learning to facilitate the coordination of optimization for hospital-discharged patients choosing skilled nursing facilities. This collection of studies addresses important modeling challenges in specific healthcare domains, and also broadly contribute to research in medical decision-making, public health policy and healthcare systems.
A matrix product state based algorithm for determining dispersion relations of quantum spin chains with periodic boundary conditions
Creators: name: Pirvu, Bogdan
name: Haegeman, Jutho
name: Verstraete, Frank
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We study a matrix product state (MPS) algorithm to approximate excited states of translationally invariant quantum spin systems with periodic boundary conditions. By means of a momentum eigenstate ansatz generalizing the one of Östlund and Rommer [1], we separate the Hilbert space of the system into subspaces with different momentum. This gives rise to a direct sum of effective Hamiltonians, each one corresponding to a different momentum, and we determine their spectrum by solving a generalized eigenvalue equation. Surprisingly, many branches of the dispersion relation are approximated to a very good precision. We benchmark the accuracy of the algorithm by comparison with the exact solutions of the quantum Ising and the antiferromagnetic Heisenberg spin-1/2 model.
description: 13 pages, 11 figures, 5 tables
Exploring the magnetic topologies of cool stars
Creators: name: Morin, J.
name: Donati, J. -F.
name: Petit, P.
name: Albert, L.
name: Auriere, M.
name: Cabanac, R.
name: Catala, C.
name: Delfosse, X.
name: Dintrans, B.
name: Fares, R.
name: Forveille, T.
name: Gastine, T.
name: Jardine, M.
name: Konstantinova-Antova, R.
name: Lanoux, J.
name: Lignieres, F.
name: Morgenthaler, A.
name: Paletou, F.
name: Velez, J. C. Ramirez
name: Solanki, S. K.
name: Theado, S.
name: Van Grootel, V.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Magnetic fields of cool stars can be directly investigated through the study of the Zeeman effect on photospheric spectral lines using several approaches. With spectroscopic measurement in unpolarised light, the total magnetic flux averaged over the stellar disc can be derived but very little information on the field geometry is available. Spectropolarimetry provides a complementary information on the large-scale component of the magnetic topology. With Zeeman-Doppler Imaging (ZDI), this information can be retrieved to produce a map of the vector magnetic field at the surface of the star, and in particular to assess the relative importance of the poloidal and toroidal components as well as the degree of axisymmetry of the field distribution. The development of high-performance spectropolarimeters associated with multi-lines techniques and ZDI allows us to explore magnetic topologies throughout the Hertzsprung-Russel diagram, on stars spanning a wide range of mass, age and rotation period. These observations bring novel constraints on magnetic field generation by dynamo effect in cool stars. In particular, the study of solar twins brings new insight on the impact of rotation on the solar dynamo, whereas the detection of strong and stable dipolar magnetic fields on fully convective stars questions the precise role of the tachocline in this process.
description: 6 pages, 2 figures, IAU Symposium 273 "Physics of Sun and Star Spots", 22-26 August 2010
Sexual health and social suffering of youth who head households in Nakuru County, Kenya
Creators: name: Lee, Laura May
Publisher: name: University of British Columbia
Year: 2015

description: The HIV epidemic and political violence in sub-Saharan Africa since the 1990’s have changed structures of care as orphans become caregivers and socioeconomic resources are depleted. As a result, the number of youth who head households has dramatically increased in the region. The dissertation explores how young women who head households in two areas (one urban, one rural) of Nakuru County, Kenya experience sexual ill health and violence in gendered ways, how they embody suffering, and how they respond to suffering amid shifting systems of care in their social environment. Drawing on participatory and community-based research with 58 youth (29 young women; 29 young men) who head households aged 15 to 24 years, I document the interactions of youth with social actors in their environment. Drawing on theories of social suffering and structural violence, I describe their daily-lived experience and the perspectives of youth and community members on the causes and potential methods for alleviating suffering and improving sexual health. I elaborate upon the ways that young women experience and embody violence and suffering in their daily lives. Analysis reveals the relational nature of youth’s suffering and how they navigate supportive and exploitive social relations in daily life. The dissertation makes a contribution to the understanding of sexual health and social suffering of socially vulnerable young women in sub-Saharan Africa by showing the social, physical, moral, political and symbolic ways in which young women embody suffering. Amid exploitive and stigmatizing experiences, social support is shown to be critical to sustaining and increasing the young women’s life force, as they seek to endure and to create opportunities for themselves and their dependents: their siblings, children and ailing adults. The dissertation concludes that young women work to ‘re-create’ structures of support that maintain family relations and stresses the importance of social support in improving their sexual health and wellbeing. It is suggested that programs and policies should be reoriented to support young women in their caregiving roles and to create a supportive social environment by allocating resources to strengthen extended family and community relations.
Additional file 2 of Traditional Chinese herbal medicine for treating novel coronavirus (COVID-19) pneumonia: protocol for a systematic review and meta-analysis
Creators: name: Li, Yuxi
name: Liu, Xiaobo
name: Guo, Liuxue
name: Li, Juan
name: Zhong, Dongling
name: Zhang, Yonggang
name: Clarke, Mike
name: Jin, Rongjiang
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Pharmacology
subject: Sociology
subject: FOS: Sociology
subject: Information Systems not elsewhere classified
subject: Cancer
subject: Science Policy
subject: Infectious Diseases
subject: FOS: Health sciences

description: Additional file 2. Search Strategy for PubMed.
SOCIAL INFRASTRUCTURE DEVELOPMENT ISSUES OF MOUNTAIN AREA RURAL TERRITORIES IN DEPRESSIVE REPUBLICS OF NORTHERN CAUCASUS
Creators: name: Shardan, Saida K.
Publisher: name: TUENGR Group
Year: 2019
Subjects: Economic world crisis
Market economy
Depressed republics
Life quality
Rural social infrastructure
Infra-systematicity.

description: International Transaction Journal of Engineering, Management, & Applied Sciences & Technologies, 10, 2, 275-282
Testing the diffusion hypothesis as a mechanism of self-healing in Disperse orange 11 doped in PMMA
Creators: name: Ramini, Shiva K.
name: Dawson, Nathan
name: Kuzyk, Mark G.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: In this work, we show that reversible photodegradation of Disperse Orange 11 doped in PMMA is not due to dye diffusion - a common phenomenon observed in many dye-doped polymers. The change in linear absorbance due to photodegradation of the material shows an isobestic point, which is consistent with the formation of a quasi-stable damaged species. Spatially-resolved amplified spontaneous emission and fluorescence, both related to the population density, are measured by scanning the pump beam over a burn mark. A numerical model of the time evolution of the population density due to diffusion is inconsistent with the experimental data suggesting that diffusion is not responsible.
description: 5 pages, 6 figures
title: KVX-053, a PTP4A3 Inhibitor, as a New Therapeutic Agent Against LPS-induced Lung Injury
Creators: name: Solopov, Pavel
name: Colunga Biancatelli, Ruben Manuel Luciano
name: Day, Tierney
name: Dimitropoulou, Christiana
name: Lazo, John
name: Sharlow, Elizabeth
name: Catravas, John D.
Publisher: name: Old Dominion University Libraries
Year: 2023

description: Acute respiratory distress syndrome (ARDS) is a life-threatening lung condition caused by inflammatory insult to the lung parenchyma. It is characterized by hypoxemia secondary to the exudation of protein-rich fluid into alveolar spaces. ARDS treatment is limited to fluid management and oxygen therapy and exhibits an estimated 40% mortality rate. Lipopolysaccharide (LPS) is used as an ARDS model in animals and induces the severe inflammation, hyperpermeability hallmarks in the bronchoalveolary anatomy.

Protein Tyrosine Phosphatase inhibitors are novel therapeutics being investigated for their immunomodulatory effects on inflammation. In this study we employed KVX-053, a potent PTP4A3 inhibitor, as a potential treatment for ARDS.

C57BL/6j wild type mice were intratracheally instilled with saline or LPS (1 mg/kg, 2µl/g) and treated with KVX-053 (10 mg/kg/day i.p.) or vehicle. Then, molecular, functional, and histological signs of injury were investigated at 72 hours post-exposure. LPS elicited substantial proteinosis and cellularity (p≤ 0.001), remodeling of bronchoalveolar spaces, edema, neutrophil infiltration, and activation (phosphorylation) of proinflammatory proteins STAT3, NLRP3, and IKB (p ≤ 0.01, p ≤ 0.001, p ≤ 0.05). KVX-053 administration protected bronchoalveolar architecture and reduced both white blood cell and protein concentrations in broncho-alveolar lavage fluid (BALF) (p ≤ 0.001, p ≤ 0.05). Additionally, KVX-053 downregulated the LPS-induced expression of pSTAT3, and mmp8 (p ≤ 0.01, p≤ 0.05). This data suggests that KVX-053 blocks the activation of multiple inflammatory pathways and could represent a promising therapeutic strategy against the inflammatory effects of ARDS.
INKLUZIV TA'LIMDA ELEKTRON PLTFORMALARDAN FOYDALANISH
Creators: name: To'layeva, Mahtob
Publisher: name: Zenodo
Year: 2025

description: Informatika va axborot texnologiyalari, kompyuter savodxonligi, raqamlashtirishga oid bilimlar zamonaviy jamiyatda tobora muhim darajaga ko‘tarilib bormoqda. Umumta’lim maktablarida informatika va axborot texnologiyalari fanini o‘qitish usullarini takomillashtirish, o‘quvchilarni raqamli kelajakka tayyorlash uchun juda muhim omil hisoblanadi.
Mechanical filtering in forced-oscillation of two coupled pendulums
Creators: name: Foulaadvand, M. Ebrahim
name: Masoumi, Davoud
Publisher: name: arXiv
Year: 2010
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Other Condensed Matter (cond-mat.other)
subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: Forced oscillation of a system composed of two pendulums coupled by a spring in the presence of damping is investigated. In the steady state and within the small angle approximation we solve the system equations of motion and obtain the amplitudes and phases of in terms of the frequency of the sinusoidal driving force. The resonance frequencies are obtained and the amplitude ratio is discussed in details. Contrary to a single oscillator, in this two-degree of freedom system four resonant frequencies, which are close to mode frequencies, appear. Within the pass-band interval the system is shown to exhibit a rich and complicated behaviour. It is shown that damping crucially affects the system properties. Under certain circumstances, the amplitude of the oscillator which is directly connected to the driving force becomes smaller than the one far from it. Particularly we show the existence of a driving frequency at which the connected oscillator's amplitude goes zero.
description: 10 pages, 14 figures
Chain of custody certification adoption, innovation, and change management in the British Columbia value-added wood products sector
Creators: name: Gilani, Haris Rehman
Publisher: name: University of British Columbia
Year: 2015

description: This study investigated the chain of custody certification adoption, the state of innovation, and change management in the BC value-added wood products sector. To achieve this goal, a survey was conducted in the fall of 2013 to determine attitudes, motivations, and barriers of a selection of value-added wood products manufacturers with regard to their current and potential participation in CoC certification. In addition, the innovativeness of the firms, as well as the change management attributes using the ADKAR (awareness, desire, knowledge, ability, and reinforcement) model, were assessed. The study revealed that 41% of the respondents were certified, with remanufacturers having the highest adoption level. Another 13% of the companies were interested in becoming certified in the next 5 years and the remaining 46% were not certified and were not interested in certification citing a range of barriers including lack of customer demand, high costs, and a lack of price premiums. Certified and interested companies seemed to be ambivalent about the motivations regarding certification. For certified companies, improved corporate image and participation in LEED building projects were the two biggest motivations for adopting certification. However, for interested companies, the ability to command price premiums was the top motivation. To assess value-added wood products industry practices with respect to innovativeness, an indirect self-evaluation scale was used to assess the propensity to create and (or) adopt new products, processes and business systems. Respondents rated themselves more innovative with respect to business systems innovation as compared to product and process innovations. The two-cluster solution in cluster analysis found that companies in the cluster with the greater proportion of certified companies had more positive views about innovativeness although no statistically significant relationship was found. The ADKAR model for change management revealed that the ability to implement the change was a significant barrier for value-added wood products manufacturers in adoption of CoC certification. Suggestions made for policymaking and change management include strategies for the creation of awareness, desire and knowledge for CoC certification. Others include providing resources to enhance the ability of companies to adopt certification, and reinforcing the change through recognitions and rewards systems.
When two become one: an apparent QSO pair turns out to be a single quasar
Creators: name: Cupani, Guido
name: Cristiani, Stefano
name: D'Odorico, Valentina
name: Milvang-Jensen, Bo
name: Krogager, Jens-Kristian
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We report on our serendipitous discovery that the objects Q 01323-4037 and Q 0132-4037, listed in the Véron-Cetty & Véron catalog (2006) as two different quasars, are actually a quasar and a star. We briefly discuss the origin of the misidentification, and provide a refined measurement of the quasar redshift.
description: 3 pages, 2 figures; accepted for publication in A&A
Comment on "Isotope effect in multi-band and multi-channel attractive systems and inverse isotope effect in iron-based superconductors" by T. Yanagisawa, et al
Creators: name: Bussmann-Holder, Annette
name: Keller, Hugo
Publisher: name: arXiv
Year: 2010
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: In a recent paper Yanagisawa et al. [1] claim from a theoretical analysis of a multi-channel multi-band superconductor model that an inverse isotope exponent on the superconducting transition temperature Tc can be realized in iron-based superconductors. Simultaneously, a subgroup of the authors of Ref. 1 performed the corresponding isotope effect experiment on (Ba, K)Fe2As2 by investigating the iron isotope exchange effect on Tc [2]. In accordance with their theoretical analysis they indeed report an unusually large sign reversed isotope exponent of α \simeq -0.18(3) which is in strong contrast to previous experiments on the nominally same system with the same composition in Ba, K content, namely Ba0.6K0.4Fe2As2 [3], where the exponent was determined to be α \simeq 0.37(3). This conflict remains unsolved until now with the exception of Ref. 4 where the iron isotope exponent has been determined for FeSe. In accordance with the results of Ref. 3 a large positive isotope exponent has been seen thus questioning the outcome of Ref. 1 and implicitly the findings of Ref. 2. Here, we do not comment on the controversial experimental situation but address the theoretical analysis of Ref. 1, where a variety of misleading assumptions have led to the conclusion that a sign reversed isotope exponent can be realized in a multi-band and multi-channel attractive model for iron based superconductors.
description: 4 pages
Massive Hopfions
Creators: name: Foster, David
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 35C08

description: The Skyrme-Faddeev model is a (3+1)-dimensional model which has knotted, string-like, soliton solutions. In this paper we investigate a Skyrme-Faddeev model with an SO(3) symmetry breaking potential. We then rescale this model and take the mass to infinity. This infinite mass model is found to have compact knotted solutions. In all of the investigated massive models we find similar charged solutions as in the usual, m=0, model. We also find that their energies follow a similar power growth as the m=0 model.
description: 18 pages
On a new parameter to estimate the helium content in old stellar systems
Creators: name: Troisi, F.
name: Bono, G.
name: Stetson, P. B.
name: Pietrinferni, A.
name: Weiss, A.
name: Fabrizio, M.
name: Ferraro, I.
name: Di Cecco, A.
name: Iannicola, G.
name: Buonanno, R.
name: Calamida, A.
name: Caputo, F.
name: Corsi, C. E.
name: Dall'Ora, M.
name: Kunder, A.
name: Monelli, M.
name: Nonino, M.
name: Piersimoni, A. M.
name: Pulone, L.
name: Romaniello, M.
name: Walker, A. R.
name: Zoccali, M.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We introduce a new parameter Δξ - the difference in magnitude between the red giant branch (RGB) bump and a point on the main sequence (MS) at the same color as the bump, the "benchmark" - to estimate the helium content in old stellar systems. Its sensitivity to helium is linear over the entire metallicity range, it is minimally affected by age, uncertainties in the photometric zero-point, reddening or the effects of evolution on the horizontal branch. The two main drawbacks are the need for precise and large photometric data sets, and a strong dependence of the ΔY/Δξ slope on metallicity. To test the Δξ parameter we selected 22 Galactic Globular Clusters (GGCs) with low foreground reddening, a broad range of iron abundance and precise, relatively deep, and homogeneous multi-band (B,V,I) photometry. We found that the observed Δξ and those predicted from α-enhanced models agree quite well if we assume Y=0.20. Comparison with canonical primordial helium content models (Y=0.245, ΔY/ΔZ=1.4) indicates that the observed Δξ values are systematically smaller than predicted. The outcome is the same if predicted parameters are based on models that take into account also CNO enhancements and becomes even larger if we consider He-enhanced models. These findings suggest that current stellar evolutionary models overestimate the luminosity of the RGB bump. We also found that including envelope overshooting can eliminate the discrepancy, as originally suggested by Alongi et al. (1993, aaps, 97, 851). The Δξ parameter of GGCs, in spite of the possible limitations concerning the input physics of current evolutionary models, provides an independent detection of pre-stellar helium at least at the 5σ level.