cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
A scenario of planet erosion by coronal radiation
Creators: name: Sanz-Forcada, J.
name: Ribas, I.
name: Micela, G.
name: Pollock, A. M. T.
name: Garcia-Alvarez, D.
name: Solano, E.
name: Eiroa, C.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Context: According to theory, high-energy emission from the coronae of cool stars can severely erode the atmospheres of orbiting planets. No observational tests of the long term effects of erosion have yet been made. Aims: To analyze the current distribution of planetary mass with X-ray irradiation of the atmospheres in order to make an observational assessment of the effects of erosion by coronal radiation. Methods: We study a large sample of planet-hosting stars with XMM-Newton, Chandra and ROSAT; make a careful identification of X-ray counterparts; and fit their spectra to make accurately measurements of the stellar X-ray flux. Results: The distribution of the planetary masses with X-ray flux suggests that erosion has taken place: most surviving massive planets, (M_p sin i >1.5 M_J), have been exposed to lower accumulated irradiation. Heavy erosion during the initial stages of stellar evolution is followed by a phase of much weaker erosion. A line dividing these two phases could be present, showing a strong dependence on planet mass. Although a larger sample will be required to establish a well-defined erosion line, the distribution found is very suggestive. Conclusions: The distribution of planetary mass with X-ray flux is consistent with a scenario in which planet atmospheres have suffered the effects of erosion by coronal X-ray and EUV emission. The erosion line is an observational constraint to models of atmospheric erosion.
description: A&A 511, L8 (2010). 4 pages, 3 figures, 1 online table (included). Language edited; corrected a wrong unit conversion (g/s -> M_J/Gyr); corrected values in column 12 of Table 1 (slightly underestimated in first version), and Figure 2 updated accordingly
COVID ( 2020-21 )Awareness Control Programme: Brief Review
Creators: name: JAYDIP DATTA
Publisher: name: Zenodo
Year: 2021
Subjects: Covid20
SARS-COV-2 Infectivity
New UK variants
Human Resource
Pandemic Control
Social Awareness Programme

description: Awareness Programme of Human resource to control the pandemic ( 2020-21 ) . It is an emergeny to control the infection spreading rate ( IFR / ISR ) to control the mortality specially in presence of new UK mutanis . It will definitely antagonise the existing emergency user authorisation ( EUA ) programme for vaccination .REF :https://www.researchgate.net/publication/334836190_INTERDISCIPLINARY_SEMINAR_AND_WORKSHOP_PARTICIPATION_An_Approach_to_Human_Resource_An_Awareness_Program_against_Covid19_in_near_future_FORMERLY_INTERDISCIPLINARY_SEMINAR_AND_WORKSHOP_PARTICIPATION_A_S
description: DATTA, JAYDIP. "COVID ( 2020-21 )awareness Control Programme: Brief Review." OSF Preprints, 2 Jan. 2021. Web.
description: {"references": ["https://osf.io/agqj4/"]}
Role of spatial inhomogeneity in dissociation of trapped molecular condensates
Creators: name: Ogren, Magnus
name: Kheruntsyan, K. V.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Other Condensed Matter (cond-mat.other)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We theoretically analyze dissociation of a harmonically trapped Bose-Einstein condensate of molecular dimers and examine how the spatial inhomogeneity of the molecular condensate affects the conversion dynamics and the atom-atom pair correlations in the short-time limit. Both fermionic and bosonic statistics of the constituent atoms are considered. Using the undepleted molecular-field approximation, we obtain explicit analytic results for the asymptotic behavior of the second-order correlation functions and for the relative number squeezing between the dissociated atoms in one, two and three spatial dimensions. Comparison with the numerical results shows that the analytic approach employed here captures the main underlying physics and provides useful insights into the dynamics of dissociation for conversion efficiencies up to 10%. The results show explicitly how the strength of atom-atom correlations and relative number squeezing degrade with the reduction of the size of the molecular condensate.
description: Final published version; 23 pages, 13 figures
Independent confirmation and refined parameters of the hot Jupiter XO-5b
Creators: name: Pál, A.
name: Bakos, G. Á.
name: Fernandez, J.
name: Sipőcz, B.
name: Torres, G.
name: Latham, D. W.
name: Kovács, Géza
name: Noyes, R. W.
name: Marcy, G. W.
name: Fischer, D. A.
name: Butler, R. P.
name: Sasselov, D. D.
name: Esquerdo, G. A.
name: Shporer, A.
name: Mazeh, T.
name: Stefanik, R. P.
name: Isaacson, H.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present HATNet observations of XO-5b, confirming its planetary nature based on evidence beyond that described in the announcement of Burke et al. (2008), namely, the lack of significant correlation between spectral bisector variations and orbital phase. In addition, using extensive spectroscopic measurements spanning multiple seasons, we investigate the relatively large scatter in the spectral line bisectors. We also examine possible blended stellar configurations (hierarchical triples, chance alignments) that can mimic the planet signals, and we are able to show that none are consistent with the sum of all the data. The analysis of the S activity index shows no significant stellar activity. Our results for the planet parameters are consistent with values in Burke et al. (2008), and we refine both the stellar and planetary parameters using our data. XO-5b orbits a slightly evolved, late G type star with mass M_s = 0.88 +/- 0.03, radius R_s = 1.08 +/- 0.04, and metallicity close to solar. The planetary mass and radius are M_p = 1.059 +/- 0.028 M_Jup and R_p = 1.109 +/- 0.050 R_Jup, respectively, corresponding to a mean density of 0.96 -0.11 +0.14 g/cm^3. The ephemeris for the orbit is P = 4.187757 +/- 0.000011, E= 2454552.67168 +/- 0.00029 (BJD) with transit duration of 0.1307 +/- 0.0013 d. By measuring four individual transit centers, we found no signs for transit timing variations. The planet XO-5b is notable for its anomalously high Safronov number, and has a high surface gravity when compared to other transiting exoplanets with similar period.
description: Accepted for publication in ApJ, 8 pages in emulateapj style
Radon needlet thresholding
Creators: name: Kerkyacharian, Gerard
name: Pennec, Erwan Le
name: Picard, Dominique
Publisher: name: arXiv
Year: 2009
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics

description: We provide a new algorithm for the treatment of the noisy inversion of the Radon transform using an appropriate thresholding technique adapted to a well-chosen new localized basis. We establish minimax results and prove their optimality. In particular, we prove that the procedures provided here are able to attain minimax bounds for any $\mathbb {L}_p$ loss. It s important to notice that most of the minimax bounds obtained here are new to our knowledge. It is also important to emphasize the adaptation properties of our procedures with respect to the regularity (sparsity) of the object to recover and to inhomogeneous smoothness. We perform a numerical study that is of importance since we especially have to discuss the cubature problems and propose an averaging procedure that is mostly in the spirit of the cycle spinning performed for periodic signals.
The velocity of second sound near the Lambda point
Creators: name: Johnson, David Lawrence
Publisher: name: University of British Columbia
Year: 2011

description: Direct measurements have been made of the velocity of second sound in liquid helium over the temperature range T[subscript ʎ]-T from 1.3 x 10⁻² K to 5 x 10⁻⁶K. Using previously determined relationships for the specific heat, superfluld density, and thermal conductivity near the lambda point, consistency has been demonstrated between the measurements, velocities predicted by superfluld hydrodynamics, and certain scaling law predictions.
Oscillations and instabilities of fast and differentially rotating relativistic stars
Creators: name: Krüger, Christian
name: Gaertig, Erich
name: Kokkotas, Kostas D.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We study non-axisymmetric oscillations of rapidly and differentially rotating relativistic stars in the Cowling approximation. Our equilibrium models are sequences of relativistic polytropes, where the differential rotation is described by the relativistic $j$-constant law. We show that a small degree of differential rotation raises the critical rotation value for which the quadrupolar f-mode becomes prone to the CFS instability, while the critical value of $T/|W|$ at the mass-shedding limit is raised even more. For softer equations of state these effects are even more pronounced. When increasing differential rotation further to a high degree, the neutral point of the CFS instability first reaches a local maximum and is lowered afterwards. For stars with a rather high compactness we find that for a high degree of differential rotation the absolute value of the critical $T/|W|$ is below the corresponding value for rigid rotation. We conclude that the parameter space where the CFS instability is able to drive the neutron star unstable is increased for a small degree of differential rotation and for a large degree at least in stars with a higher compactness.
description: 16 pages, 11 figures; paper accepted for publication in Phys. Rev. D (81.084019)
MINTAQAVIY HAMKORLIKNING XALQARO IQTISODIY JIHATLARI VA HUDUDLARARO MUNOSABATLARNI RIVOJLANTIRISHDA YANGI O'ZBEKISTONNING ISHTIROKI
Creators: name: Narziqulov, Javlonbek
name: Shakirova, Nigora
Publisher: name: Zenodo
Year: 2023

description: Mazkur maqolada mintaqaviy hamkorlikning xalqaro iqtisodiy jihatlari va ahamiyati, hamda hududlararo va mintaqaviy hamkorlikda Yangi O’zbekistonning ishtirokini yaxshilash masalalari tahlil qilingan. Shuningdek, global integratsiya va millatlararo hamjihatlikka oid qarashlarga to'xtalib o'tilgan.
A dark matter disc in three cosmological simulations of Milky Way mass galaxies
Creators: name: Read, J. I.
name: Mayer, L.
name: Brooks, A. M.
name: Governato, F.
name: Lake, G.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Making robust predictions for the phase space distribution of dark matter at the solar neighbourhood is vital for dark matter direct detection experiments. To date, almost all such predictions have been based on simulations that model the dark matter alone. Here, we use three cosmological hydrodynamics simulations of bright, disc dominated galaxies to include the effects of baryonic matter self-consistently for the first time. We find that the addition of baryonic physics drastically alters the dark matter profile in the vicinity of the Solar neighbourhood. A stellar/gas disc, already in place at high redshift, causes merging satellites to be dragged preferentially towards the disc plane where they are torn apart by tides. This results in an accreted dark matter disc that contributes ~0.25 - 1.5 times the non-rotating halo density at the solar position. The dark disc, unlike dark matter streams, is an equilibrium structure that must exist in disc galaxies that form in a hierarchical cosmology. Its low rotation lag with respect to the Earth significantly boosts WIMP capture in the Earth and Sun, boosts the annual modulation signal, and leads to distinct variations in the flux as a function of recoil energy that allow the WIMP mass to be determined.
description: Final version accepted for publication in MNRAS; only minor changes from previous version
The production of hypersonic shock waves in an electrothermal diaphragm shock tube
Creators: name: Phillips, Malvern Gordon Rutherford
Publisher: name: University of British Columbia
Year: 2011

description: The operation of a diaphragm shock tube of 5 cm inside diameter in which the driver gas is heated by the discharge of electrical energy ( ~ 10³ joules) is analyzed in detail. A technique is described for the measurement of the heated driver gas pressure and empirical relations are obtained which enable the shock speed to be calculated from a knowledge of the discharge voltage and test gas pressure. Using helium driver gas initially at atmospheric pressure, shock Mach numbers of about 20 are obtained in argon at an initial pressure of about 1 Torr. The separation of shock front and contact surface is analyzed by means of a convenient shock reflection technique using a smear camera. The properties of the shock-heated gas are shown to agree with the predictions of standard shock wave theory, which yields a temperature of about 1.3•10⁴°K and an electron density of about I0¹⁷ cm⁻³ for the case of a Mach 20 shock in argon at 0.5 Torr. In this case the shock-heated gas sample is observed to be about 5 cm in length at a position 1.2 meters from the diaphragm.
Altmetrics: Befreiung der Wissenschaft oder Fortsetzung ihrer Vermessung mit anderen Mitteln?
Creators: name: Herb, Ulrich
Publisher: name: Zenodo
Year: 2019
Subjects: Altmetrics
Social Media
Impact
Metrics

description: Ulrich Herb beschäftigt sich in seinem Beitrag mit dem Prinzip alternativer Metriken, der sog. Altmetrics, indem er Verwertungsmöglichkeiten, Anwendungsszenarien sowie Besonderheiten im Kontrast zu traditionellen Indikatoren darstellt, aber auch erklärt, wie die Datengrundlage zustande kommt. Zusätzlich erfolgt eine Beschreibung verschiedener Altmetrics-Dienstleister und deren Rolle in der Wissenschaftsbewertung und Wissenschaftssteuerung.
Depth dependent dynamics in the hydration shell of a protein
Creators: name: Servantie, J.
name: Atilgan, C.
name: Atilgan, A. R.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We study the dynamics of hydration water/protein association in folded proteins, using lysozyme and myoglobin as examples. Extensive molecular dynamics simulations are performed to identify underlying mechanisms of the dynamical transition that corresponds to the onset of amplified atomic fluctuations in proteins. The number of water molecules within a cutoff distance of each residue scales linearly with protein depth index and is not affected by the local dynamics of the backbone. Keeping track of the water molecules within the cutoff sphere, we observe an effective residence time, scaling inversely with depth index at physiological temperatures while the diffusive escape is highly reduced below the transition. A depth independent orientational memory loss is obtained for the average dipole vector of the water molecules within the sphere when the protein is functional. While below the transition temperature, the solvent is in a glassy state, acting as a solid crust around the protein, inhibiting any large scale conformational fluctuations. At the transition, most of the hydration shell unfreezes and water molecules collectively make the protein more flexible.
description: Journal of Chemical Physics in press
The asymptotic behavior of least pseudo-Anosov dilatations
Creators: name: Tsai, Chia-Yen
Publisher: name: arXiv
Year: 2008
Subjects: subject: Geometric Topology (math.GT)
subject: Differential Geometry (math.DG)
subject: FOS: Mathematics

description: For a surface $S$ with $n$ marked points and fixed genus $g\geq2$, we prove that the logarithm of the minimal dilatation of a pseudo-Anosov homeomorphism of $S$ is on the order of $(\log n)/n$. This is in contrast with the cases of genus zero or one where the order is $1/n$.
description: 21 pages, 12 figures
Amtliche Mitteilungen der Technischen Universität Dortmund Nr. 3/2021
Creators: name: (:Unkn) Unknown
Publisher: name: Technische Universität Dortmund
Year: 2021
Subjects: subject: 080

description: Geschäftsordnung des Senats der Technischen Universität Dortmund vom 25.11.2020
description: Amtliche Mitteilungen der Technischen Universität Dortmund;2021, 3
INTEGRATSIYA DARSLARINING PSIXOLOGIK ASOSLARI
Creators: name: Xusanova, Dilorom
name: Komilova, Arofatoy
name: Odashboyeva, Odina
Publisher: name: Zenodo
Year: 2023

description: Ushbu maqolada biologiya va psixologiya fanlari o’rtasidagi bog’liqliklar haqida ma’lumotlar keltirilgan. Biologiya o’rganish ob’ekti,  tadqiqot usullari,  umumiy muammolari va maqsadlari orqali psixologiya bilan  o’zaro bog’langan. Biologiya va psixologiya o’zaro aloqada bo’lib, insonni o’rganish uchun yangi istiqbollar va imkoniyatlar yaratmoqda.
A See-Saw $S_4$ model for fermion masses and mixings
Creators: name: Meloni, Davide
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present a supersymmetric see-saw $S_4$ model giving rise to the most general neutrino mass matrix compatible with Tri-Bimaximal mixing. We adopt the $S_4\times Z_5$ flavour symmetry, broken by suitable vacuum expectation values of a small number of flavon fields. We show that the vacuum alignment is a natural solution of the most general superpotential allowed by the flavour symmetry, without introducing any soft breaking terms. In the charged lepton sector, mass hierarchies are controlled by the spontaneous breaking of the flavour symmetry caused by the vevs of one doublet and one triplet flavon fields instead of using the Froggatt-Nielsen U(1) mechanism. The next to leading order corrections to both charged lepton mass matrix and flavon vevs generate corrections to the mixing angles as large as ${\cal O}(λ_C^2)$. Applied to the quark sector, the symmetry group $S_4\times Z_5$ can give a leading order $V_{CKM}$ proportional to the identity as well as a matrix with ${\cal O}(1)$ coefficients in the Cabibbo $2\times 2$ submatrix. Higher order corrections produce non vanishing entries in the other $V_{CKM}$ entries which are generically of ${\cal O}(λ_C^2)$.
description: 30 pages, 3 figures, minor changes to match the published version
THE IMPACT OF STRATEGIC PLANNING ON ORGANIZATIONAL EXCELLENCE IN YEMENI PRIVATE UNIVERSITIES
Creators: name: Amatalbari Abdullah Mohammed Amer
name: Jabr Abdul-Qawi Ismael Al-Sanabani
Publisher: name: Zenodo
Year: 2023
Subjects: Strategic Planning, Organizational Excellence, Yemeni Private Universities.

description: Abstract

Strategic planning is crucial for organizational excellence in higher education. This study examines the relationship between strategic planning and organizational excellence in Yemeni private universities. The primary objectives of this research were to: (1) assess the impact of strategic planning on organizational excellence in Yemeni private universities, (2) evaluate the current level of strategic planning practices and its dimensions, and (3) determine the level of organizational excellence in Yemeni private universities located in Sana'a, the capital city. To achieve these objectives, a quantitative approach was employed, encompassing both descriptive and analytical methods. A structured questionnaire was distributed to a sample of 317 academic and administrative leaders from five Yemeni private universities in Sana'a. The comprehensive inventory method was utilized to gather comprehensive data. The findings revealed a remarkably high level of strategic planning attainment among the sampled universities. Additionally, a statistically significant positive correlation was established between strategic planning and organizational excellence. Furthermore, statistically significant differences in strategic planning practices were observed among the study participants, with variations attributed to the size of the university. Based on these findings, the study recommends a heightened emphasis on strategic planning to foster organizational excellence within the Yemeni private university sector
Fundamental collapse of the exciton-exciton effective scattering
Creators: name: Pilozzi, Laura
name: Combescot, Monique
name: Betbeder-Matibet, Odile
name: D'Andrea, Andrea
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The exciton-exciton effective scattering which rules the time evolution of two excitons is studied as a function of initial momentum difference, scattering angle and electron-to-hole mass ratio. We show that this effective scattering can collapse for energy-conserving configurations provided that the difference between the two initial exciton momenta is larger than a threshold value. Sizeable scatterings then exist in the forward direction only. We even find that, for an electron-to-hole mass ratio close to 1/2, the exciton-exciton effective scattering stays close to zero in all directions when the difference between the initial exciton momenta has a very specific value. This unexpected but quite remarkable collapse comes from tricky compensation between direct and exchange Coulomb processes which originates from the fundamental undistinguishability of the exciton fermionic components.
description: Revised text version. Accepted for publication in Physical Review B
title: Visualization of Plasma Membrane Potential Changes Within Nanoseconds Time Intervals Using Strobe Fluorescence
Creators: name: Semenov, Iurii
name: Silkunas, Mantas
name: Pakhomov, Andrei G.
Publisher: name: Old Dominion University Libraries
Year: 2021

description: A growing number of applications involving exposure to ultrashort electric pulses demand a better understanding of plasma membrane (PM) charging dynamics while subjected to nanosecond pulsed electric field (nsPEF) exposure. Accurate measurements of cell PM changes would verify fundamental hypotheses describing the degree of voltage change across a PM and cellular sensitivity to the applied electric field of ultrashort duration.

We utilized a newly developed strobe fluorescence microscopy system and voltage-sensitive dye FluoVolt to measure changes in PM potential with a temporal resolution of +/- 25 ns. This approach allowed us to visualize a recently postulated megahertz compression phenomenon. Megahertz compression is the ability of nsPEF to accumulate charge on the PM if the interpulse time interval in a train is shorter than PM discharge time. Here we demonstrate how PM potential changes at cathode and anode sides of a CHO cell subjected to trains of 200 ns pulses applied with intervals of 200 ns or 400 ns (Fig 1).

Also, we show dynamics of PM potential changes in the CHO cells stimulated by electrodes arrayed in a quadrupole. 600 ns or 200 ns pulses were applied in the way to create bipolar cancellation for inhibition of nsPEF effects near the electrodes but promote distant stimulation in the center of the array. Our data show that in the cells situated between the electrodes at the periphery of the array, plasma membrane’s short depolarizations and hyperpolarizations follow a bipolar electric field created by electrical switching of the anode. However, in the center of the array, where the cancellation of cancellation (CAN-CAN) effect is achieved, the cell’s PM potential follows re-created monopolar electric pulse. The strobe fluorescence microscopy system presents a new powerful tool to push forward our understanding of the interactions of nsPEF with biological systems.
Czech Doctors and the Generational Clash
Creators: name: Turek, Tomáš Timofej
Publisher: name: figshare
Year: 2021
Subjects: subject: Health Care
subject: 111717 Primary Health Care
subject: FOS: Health sciences
subject: 111709 Health Care Administration
subject: Medicine
subject: 130209 Medicine, Nursing and Health Curriculum and Pedagogy
subject: FOS: Educational sciences

description: The project deals with the causes and consequences of changes in the work environment in the Czech health care system with emphasis on medical personnel from the perspective of management with a focus on the generational differences of physicians as one of the possible key elements for the development of these phenomena. The project is divided into theoretical and research part, where the theoretical part summarizes the basic sociological knowledge related to the issue of population generations and individual aspects specific to the labor market of the Czech Republic in medicine. The research part then presents the results of quantitative research conducted in the form of a questionnaire survey among medical students.
«De todo ese dolor que lo precede». La poesía del exilio de Martha L. Canfield
Creators: name: Spadola, Carmelo
Publisher: name: Comparative Cultural Studies - European and Latin American Perspectives
Year: 2021

description: In this contribution we present some poems concerning the theme of exile-insile in Martha Canfield, Uruguayan-Italian poet, interpret of the political and social situation of Uruguay during the military dictatorship (1973-1985). The elected poems are contained in the first collection, Anunciaciones (1973), beyond an emblematic text titled El pasado ajeno, in which the poet reaches a very high level of dramatism.
description: Comparative Cultural Studies - European and Latin American Perspectives, Vol. 6 No. 12 (2021)
Effects of substrate relaxation on adsorption in pores
Creators: name: Kim, Hye-Young
name: Gatica, Silvina M.
name: Stan, George
name: Cole, Milton W.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Fluids in porous media are commonly studied with analytical or simulation methods, usually assuming that the host medium is rigid. By evaluating the substrate's response (relaxation) to the presence of the fluid we assess the error inherent in that assumption. One application is a determination of the ground state of 3He in slit and cylindrical pores. With the relaxation, there results a much stronger cohesion than would be found for a rigid host. Similar increased binding effects of relaxation are found for classical fluids confined within slit pores or nanotube bundles.
description: 1 PDF file includes text and 3 figures
Memoria y soledad: de la Shoá a la violencia colombiana
Creators: name: Canfield, Martha L.
Publisher: name: Comparative Cultural Studies - European and Latin American Perspectives
Year: 2021

description: The essay focuses on a novel by the Colombian writer Azriel Bibliowicz, Migas de pan, published in 2014, that narrates the kidnapping of an elderly Jew who survived the Siberian concentration camps and emigrated in Colombia with his wife, an Auschwitz survivor. Both themes, Holocaust and Colombian Violence, are linked and give rise to a series of reflexions on evil, solidarity, personal memory and its transmission (or post-memory), and the values of words and silence.
description: Comparative Cultural Studies - European and Latin American Perspectives, Vol. 6 No. 12 (2021)
El homenaje de Marcello Gentili a Vera Vigevani Jarach como paradigma de su legado ético y estético
Creators: name: Cancellier, Antonella
Publisher: name: Comparative Cultural Studies - European and Latin American Perspectives
Year: 2021

description: La operación artística de Marcello Gentili, abogado de parte civil en el Proceso Cóndor en Roma, es extremamente original ya en su propósito de recuperar un material de por sí efímero como las páginas de los diarios. Según una relación dialéctica de contraposición o analogía con los textos y las imágenes de la crónica, Marcello Gentili sobrepone e intrelaza significados y significantes en la construcción de un mensaje ético y estético duradero donde la preocupación para los derechos humanos es el hilo conductor. Se analiza en particular la obra que Gentili dedica a Vera Vigevani Jarach y a su dual historia («Edith Stein. Un abbraccio dopo vent’anni di silenzi - Vera Vigevani e Marta Remedios Álvarez - “Il memoriale della Shoa di Milano apre le sue porte” - Corriere della Sera, 21-1-2014»). Al ir tejiendo una red intertextual de alusiones y citas como instrumento de una hermenéutica compleja y estratificada, a través de la imagen trazada con pasteles de Edith Stein, rompiendo barreras temáticas y espacio-temporales, el recorrido posiblemente cierre su círculo sobre aquel Río de la Plata de la imagen final de Garage Olimpo.
description: Comparative Cultural Studies - European and Latin American Perspectives, Vol. 6 No. 12 (2021)
Fast radiation mediated shocks and supernova shock breakouts
Creators: name: Katz, Boaz
name: Budnik, Ran
name: Waxman, Eli
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present a simple analytic model for the structure of non-relativistic and relativistic radiation mediated shocks. At shock velocities β_s\equiv v_s/c\gtrsim 0.1, the shock transition region is far from thermal equilibrium, since the transition crossing time is too short for the production of a black-body photon density (by Bremsstrahlung emission). In this region, electrons and photons (and positrons) are in Compton (pair) equilibrium at temperatures T_s significantly exceeding the far downstream temperature, T_s\gg T_d\approx 2(\varepsilon n_u \hbar^3c^3)^{1/4}. T_s\gtrsim 10 keV is reached at shock velocities β_s\approx 0.2. At higher velocities, β_s\gtrsim0.6, the plasma is dominated in the transition region by e^\pm pairs and 60 keV\lesssim T_s \lesssim 200 keV. We argue that the spectrum emitted during the breaking out of supernova shocks from the stellar envelopes (or the surrounding winds) of Blue Super Giants and Wolf-Rayet stars, which reach β_s>0.1 for reasonable stellar parameters, may include a hard component with photon energies reaching tens or even hundreds of keV. This may account for the X-ray outburst associated with SN2008D, and possibly for other SN-associated outbursts with spectra not extending beyond few 100 keV (e.g. XRF060218/SN2006aj).
description: 12 pages, 3 figures, analysis of the case \beta_d\approx 0.1 corrected
HEREJES. Exilio y Herejía en la novela de Leonardo Padura
Creators: name: Concepción, Sunamis Fabelo
Publisher: name: Comparative Cultural Studies - European and Latin American Perspectives
Year: 2021

description: Ensayo sobre la novela Herejes del escritor Leonardo Padura. A partir de la reseña de la novela se presenta un acercamiento a la cosmovisión del autor sobre el Exilio, asociado al ejercicio de la libertad, entendida esta como herejía en diversos momentos históricos, circunstancias y lugares. De esta manera quedarán hiladas casi por azar tres historias que confluirán, jugando con los tiempos en la triste suerte de los 937 judíos que a bordo del S.S. Louis en 1939, llegaron a la Bahía de La Habana en busca de una última esperanza de salvación que no lograron conseguir.
description: Comparative Cultural Studies - European and Latin American Perspectives, Vol. 6 No. 12 (2021)
Quantitative measurements of marine acoustic scattering from zooplanktonic organisms
Creators: name: Beamish, Peter
Publisher: name: University of British Columbia
Year: 2011

description: The purposes of this research have been to determine a) the basic physical causes of acoustic scattering from zooplanktonic organisms and b) necessary criteria for future acoustic studies involving these animals. In situ measurements at 102 kHz have been made of the scattering of sound from a volumetric distribution of a zooplanktonic organism, the euphausiid. Quantitative information was recorded on analog magnetic tape and subsequently converted to digital form for analysis. Based on simultaneous measurements of side and back scattering from euphausiids and on a mathematical model, four-fifths of the scattered sound is considered to be caused by the compressibility contrast between the animals and the sea water. The remaining one-fifth is attributed to density contrast. Acoustic energy distribution curves are characteristic of the number and size of the animals contained in the small volume of the ocean that was studied. Acoustic counting of the animals gave results that compared favourably with simultaneous controlled net sampling. The back scattering cross-section of a typical euphausiid at 102 kHz has been found to be 1.4 x 10⁻⁴ cm² . Based on this value it is possible to predict the optimum frequency and intensity of incident sound for future acoustic studies involving these animals.
La distancia justa. Huellas y huecos de lo judío en Sergio Chejfec
Creators: name: Fiorani, Flavio
Publisher: name: Comparative Cultural Studies - European and Latin American Perspectives
Year: 2021

description: The essay deals with two novels and a short story by Sergio Chejfec. Lenta biografía is an attempt to recreate the European past of the narrator’s father with its traumatic burden. In Mis dos mundos, Chejfec narrates the fade of the experience of walking in a park while at the same time evokes a family plot inhabited by features and traces of a fractured past. The short story El extranjero tells the spatial non-belonging as a place of origin and the Jewish heritage as exile. All texts are marked by uncertain space-time coordinates, mix fiction, autobiography and essay. They present errancy and excentricity as the most effective position to displace crystallized meanings of Jewish condition.
description: Comparative Cultural Studies - European and Latin American Perspectives, Vol. 6 No. 12 (2021)
Superconductivity in Multi-orbital t-J1-J2 Model and its Implications for Iron Pnictides
Creators: name: Goswami, Pallab
name: Nikolic, Predrag
name: Si, Qimiao
Publisher: name: arXiv
Year: 2009
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Motivated by the bad metal behavior of the iron pnictides, we study a multi-orbital $\mathrm{t-J_1-J_2}$ model and investigate possible singlet superconducting pairings. Magnetic frustration by itself leads to a large degeneracy in the pairing states. The kinetic energy breaks this into a quasi-degeneracy among a reduced set of pairing states. For small electron and hole Fermi pockets, an $A_{1g}$ state dominates over the phase diagram but a $B_{1g}$ state has close-by energy. In addition to the nodeless $A_{1g}$ $s_{x^2y^2}$ channel, the nodal $A_{1g}$ $s_{x^2+y^2}$ and $B_{1g}$ $d_{x^2-y^2}$ channels are also competitive in the magnetically frustrated $J_1 \sim J_2$ parameter regime. An $A_{1g}+i B_{1g}$ state, which breaks time-reversal symmetry, occurs at low temperatures in part of the phase diagram. Implications for the experiments in the iron pnictides are discussed.
description: 5 pages, 3 figures, to appear in EPL
Doble exilio y doble escritura en Diario a dos voces de José María y Manuel Lamana
Creators: name: Símini, Diego
Publisher: name: Comparative Cultural Studies - European and Latin American Perspectives
Year: 2021

description: An analysis of writing patterns of the two diaries composing the text Diario a dos voces. The paper shows the stylistic aspects of both authors and explores the testimonial value and literary impact of the text.
description: Comparative Cultural Studies - European and Latin American Perspectives, Vol. 6 No. 12 (2021)
Čeští lékaři a generační střet
Creators: name: Turek, Tomáš Timofej
Publisher: name: figshare
Year: 2021
Subjects: subject: Health Care
subject: 111717 Primary Health Care
subject: FOS: Health sciences
subject: 111709 Health Care Administration
subject: Medicine
subject: 130209 Medicine, Nursing and Health Curriculum and Pedagogy
subject: FOS: Educational sciences

description: Projekt se zabývá příčinami a důsledky změn pracovního prostředí v českém zdravotnictví s důrazem na lékařský personál z pohledu managementu, se zaměřením na generační rozdíly lékařů, jakožto jeden z možných klíčových elementů pro vývoj těchto jevů. Projekt je rozdělen na teoretickou a výzkumnou část, kdy v teoretické části jsou shrnuty základní sociologické poznatky, týkající se problematiky populačních generací a jednotlivé aspekty specifické pro trh práce České republiky v rámci lékařství. Výzkumná část poté předkládá výsledky kvantitativního výzkumu, provedeného formou dotazníkového šetření mezi studenty lékařské fakulty.
[{TcI(NO)(LOMe)(PPh3)Cl}2Ag](PF6) and [TcII(NO)(LOMe)(PPh3)Cl](PF6): Two Unusual Technetium Complexes with a “Kläui-type” Ligand
Creators: name: Jungfer, Maximilian Roca
name: Ernst, Moritz Johannes
name: Hagenbach, Adelheid
name: Abram, Ulrich
Publisher: name: Freie Universität Berlin
Year: 2022
Subjects: subject: Technetium
subject: nitrosyl complexes
subject: EPR
subject: tripod ligands
subject: 500 Naturwissenschaften und Mathematik::540 Chemie::540 Chemie und zugeordnete Wissenschaften

description: The reaction of [TcI(NO)(LOMe)(PPh3)Cl] ({LOMe}−=η5-cyclopentadienyltris(dimethyl phosphito-P)cobaltate(III)) with Ag(PF6) gives two unexpected products: the dimeric technetium(I) complex [{Tc(NO)(LOMe)(PPh3)Cl}2Ag](PF6) with a central Ag+ ion and the cationic Tc(II) compound [Tc(NO)(LOMe)(PPh3)Cl](PF6). The products have been studied spectroscopically and by X-ray diffraction.
Čeští lékaři a generační střet
Creators: name: Turek, Tomáš Timofej
Publisher: name: figshare
Year: 2021
Subjects: subject: Health Care
subject: 111717 Primary Health Care
subject: FOS: Health sciences
subject: 111709 Health Care Administration
subject: Medicine
subject: 130209 Medicine, Nursing and Health Curriculum and Pedagogy
subject: FOS: Educational sciences

description: Projekt se zabývá příčinami a důsledky změn pracovního prostředí v českém zdravotnictví s důrazem na lékařský personál z pohledu managementu, se zaměřením na generační rozdíly lékařů, jakožto jeden z možných klíčových elementů pro vývoj těchto jevů. Projekt je rozdělen na teoretickou a výzkumnou část, kdy v teoretické části jsou shrnuty základní sociologické poznatky, týkající se problematiky populačních generací a jednotlivé aspekty specifické pro trh práce České republiky v rámci lékařství. Výzkumná část poté předkládá výsledky kvantitativního výzkumu, provedeného formou dotazníkového šetření mezi studenty lékařské fakulty.
КОРРЕКЦИЯ НЕЙРОДЕГЕНЕРАТИВНЫХ ЗАБОЛЕВАНИЙ ФЛАВОНОИДАМИ
Creators: name: Пардаев, Фирдавс
name: Мамаджанов, Мухторжон
Publisher: name: Zenodo
Year: 2023

description: В настоящее время в мире становится всё больше нейродегенеративных заболеваний. Лечить эти заболевания флавоноидами лучше и более безвредно для организма человека.
Vnímání života v Ústeckém kraji České republiky očima gayů s virem HIV
Creators: name: Turek, Tomáš Timofej
Publisher: name: figshare
Year: 2021
Subjects: subject: 160701 Clinical Social Work Practice
subject: FOS: Sociology
subject: 160699 Political Science not elsewhere classified
subject: FOS: Political science
subject: 160512 Social Policy
subject: 160799 Social Work not elsewhere classified
subject: 160807 Sociological Methodology and Research Methods
subject: 160808 Sociology and Social Studies of Science and Technology
subject: 169999 Studies in Human Society not elsewhere classified
subject: 110703 Autoimmunity
subject: FOS: Clinical medicine
subject: 110704 Cellular Immunology
subject: Diseases
subject: 111705 Environmental and Occupational Health and Safety
subject: FOS: Health sciences
subject: Health Care
subject: 110706 Immunogenetics (incl. Genetic Immunology)
subject: 110799 Immunology not elsewhere classified
subject: 110804 Medical Virology
subject: 119999 Medical and Health Sciences not elsewhere classified
subject: FOS: Other medical sciences
subject: 111717 Primary Health Care
subject: 111716 Preventive Medicine

description: Bakalářská práce pojednává o vnímání vlastního života populací homosexuálně orientovaných mužů, kteří jsou nakažení virem HIV, žijí v Ústeckém kraji a jsou registrováni jako infikované osoby. Dále pak pojednává o jejich vnímání sociálních služeb v kraji a služeb sociální práce. Teoretická část se zaměřuje nejen na popis viru HIV a nemoci AIDS z obecné roviny, mechanismu fungování viru, léčby a dalších specifik onemocnění, ale také popisuje homosexualitu, její vznik a souvislost s virem a dále související pojem stigmatizace, neboť lze vyvodit, že virus sociálně stigmatizuje ty, kteří jím trpí. Empirická část si klade za cíl zjistit vnímání života gayů s HIV virem v Ústeckém kraji jejich očima. Formou polo-strukturovaných rozhovorů se proto zabývá jejich subjektivním hodnocením, názory a spokojeností z obecné životní roviny a dále také související otázkou stigmatizace.
The Quantum Zeno Effect Immunizes the Avian Compass Against the Deleterious Effects of Exchange and Dipolar Interactions
Creators: name: Dellis, A. T.
name: Kominis, I. K.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Quantum Physics (quant-ph)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Physical sciences

description: Magnetic-sensitive radical-ion-pair reactions are understood to underlie the biochemical magnetic compass used by avian species for navigation. Recent experiments have provided growing evidence for the radical-ion-pair magnetoreception mechanism, while recent theoretical advances have unravelled the quantum nature of radical-ion-pair reactions, which were shown to manifest a host of quantum-information-science concepts and effects, like quantum measurement, quantum jumps and the quantum Zeno effect. We here show that the quantum Zeno effect provides for the robustness of the avian compass mechanism, and immunizes it's magnetic and angular sensitivity against the deleterious and molecule-specific exchange and dipolar interactions.
description: 6 pages, 4 figures
The Degeneracy of Galaxy Formation Models
Creators: name: Neistein, Eyal
name: Weinmann, Simone M.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We develop a new formalism for modeling the formation and evolution of galaxies within a hierarchical universe. Similarly to standard semi-analytical models we trace galaxies inside dark-matter merger-trees. The formalism includes treatment of feedback, star-formation, cooling, smooth accretion, gas stripping in satellite galaxies, and merger-induced star bursts. However, unlike in other models, each process is assumed to have an efficiency which depends only on the host halo mass and redshift. This allows us to describe the various components of the model in a simple and transparent way. By allowing the efficiencies to have any value for a given halo mass and redshift, we can easily encompass a large range of scenarios. To demonstrate this point, we examine several different galaxy formation models, which are all consistent with the observational data. Each model is characterized by a different unique feature: cold accretion in low mass haloes, zero feedback, stars formed only in merger-induced bursts, and shutdown of star-formation after mergers. Using these models we are able to examine the degeneracy inherent in galaxy formation models, and look for observational data that will help to break this degeneracy. We show that the full distribution of star-formation rates in a given stellar mass bin is promising in constraining the models. We compare our approach in detail to the semi-analytical model of De Lucia & Blaizot. It is shown that our formalism is able to produce a very similar population of galaxies once the same median efficiencies per halo mass and redshift are being used. We provide a public version of the model galaxies on our web-page, along with a tool for running models with user-defined parameters. Our model is able to provide results for a 62.5 h^{-1} Mpc box within just a few seconds.
description: Accepted for publication in MNRAS. Fig 6 & 7 corrected. For the project page which allows running your own model, see http://www.mpa-garching.mpg.de/galform/sesam/
A Simple and Robust Method to Prepare Polyelectrolyte Brushes on Polymer Surfaces
Creators: name: Schulze, Maiko
name: Adigüzel, Seyma
name: Nickl, Philip
name: Schmitt, Ann-Cathrin
name: Dernedde, Jens
name: Ballauff, Matthias
name: Haag, Rainer
Publisher: name: Freie Universität Berlin
Year: 2022
Subjects: subject: blood compatibility
subject: Hofmeister series
subject: linear polyglycerol sulfate
subject: polyelectrolyte brushes
subject: quartz crystal microbalance
subject: surface coatings
subject: 500 Naturwissenschaften und Mathematik::540 Chemie::540 Chemie und zugeordnete Wissenschaften

description: A simple and robust method is presented to immobilize a heparin-analog polyelectrolyte on inert hydrophobic surfaces. It is demonstrated that an amphiphilic block copolymer consisting of linear polyglycerol sulfate (lPGS) and a benzophenone modified anchor block can be bound to polystyrene surfaces in a facile dip-coating procedure. The chaotropic salt guanidinium chloride is used to overcome the aggregation of the polymer as well as the repulsion between highly hydrated sulfate groups and the polystyrene surface. Irradiation with UV light tethers the polymer chains covalently to the surface. The resulting coating exhibits an aggregate morphology that resembles the aggregation behavior in solution, with a coating thickness of 8 nm. The behavior of the surfaces is dominated by the polyelectrolyte brush coating. They swell and collapse in response to different ionic strengths of the surrounding medium, and bind proteins via electrostatic interactions. The coating is stable toward physiological conditions over the course of several weeks. Coated surfaces bind to proteins of the complement cascade when in contact with dilute blood serum, which results in a decrease of complement activity to 78 ± 4%. The coating procedure can also be applied to other nonactivated polymer surfaces, as demonstrated on a polypropylene fleece.
La impronta del exilio intelectual republicano español en América Latina: Las cátedras aztecas, el asociacionismo porteño y la nostalgia peninsular en la Mayor de las Antillas
Creators: name: Savín, Claudia Sánchez
Publisher: name: Comparative Cultural Studies - European and Latin American Perspectives
Year: 2021

description: The present work focalises on the generality of the Spanish republican intellectual exile in Latin America since 1939 and its aim is to expose shortly the tasks and contributions more meaningful and distinctive of those exiles in Mexico, Argentina and Cuba, starting from the concrete historical conditions of each of these destinations.
description: Comparative Cultural Studies - European and Latin American Perspectives, Vol. 6 No. 12 (2021)
Hosting an International Graduate Student Orientation
Creators: name: Weisbrod, Liza
name: Rumble, Juliet T.
name: Grabowsky, Adelia
name: Altamirano, Isabel
name: Sahib, Emily
Publisher: name: Charles C. Sherrod Library of East Tennessee State University
Year: 2023
Subjects: international students
graduate students
library orientations
library outreach programs

description: In Fall 2022, Auburn University Libraries faculty and staff hosted an orientation event for newly arrived international graduate students. Highlights of the event included tours of major library service points, a shared meal, and a meet and greet for graduate students and subject librarians. A key takeaway for both groups was an increased awareness of the differences that exist between U.S. academic libraries and those in other countries. The authors discuss elements of the library orientation that worked well, and address lessons learned that will be used to improve future events