cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Pictures of the grassland habitat around the Kabini backwaters, foraging elephant groups, and agonistic interactions;Details of focal zone sampling for grass abundance, and density of elephants in the grassland habitat;Details of within-clan and between-clan agonism: sampling, video scoring, and data analysis;Grass biomass in the grassland habitat in Kabini and in the neighbouring forest/savannah woodland habitats of Nagarahole and Bandipur National Parks, and within-zone variability in grass biomass, cover, and grass height in the grassland habitat;Comparison of agonism between females within and between clans: behaviours shown and rates.
Creators: name: Gautam, Hansraj
name: Vidya, T. N. C.
Publisher: name: The Royal Society
Year: 2023
Subjects: classificationCode: 310399
subject: Ecology not elsewhere classified
classificationCode: 310901
subject: Animal behaviour

description: According to the ecological model of female social relationships (EMFSR), within-group competition and between-group competition in female-bonded species are shaped by food distribution. Strong between-group contests are expected over large, monopolizable resources and high population density, but not when low-quality food is distributed across large, undefended home ranges. Within-group contests are expected to be more frequent with increasing heterogeneity among feeding sites and with group size. We tested these predictions in female Asian elephants, which show traits associated with infrequent contests –graminivory, high fission–fusion and overlapping home ranges. We examined how food distribution and competitor density affected agonistic interactions within and between female elephant clans (social groupings) in the Kabini grassland, southern India. We found stronger between-clan contest in the grassland than that known from neighbouring forests, and more frequent agonism between females between clans than within clans. Such strong between-clan contest was attributable to the grassland being a food-rich habitat patch, thus supporting EMFSR. Within-clan agonism was also frequent, but did not increase with food heterogeneity, contradicting EMFSR. Contrary to recent claims, increasing within-clan agonism with group size suggested ecological constraints on large groups despite high fission–fusion. High population density may explain such frequent contests despite graminivory and fission–fusion.
Charge control in InP/GaInP single quantum dots embedded in Schottky diodes
Creators: name: Couto, O. D. D.
name: Puebla, J.
name: Chekhovich, E. A.
name: Luxmoore, I. J.
name: Elliott, C. J.
name: Babazadeh, N.
name: Skolnick, M. S.
name: Tartakovskii, A. I.
name: Krysa, A. B.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We demonstrate control by applied electric field of the charge states in single self-assembled InP quantum dots placed in GaInP Schottky structures grown by metalorganic vapor phase epitaxy. This has been enabled by growth optimization leading to suppression of formation of large dots uncontrollably accumulating charge. Using bias- and polarization-dependent micro-photoluminescence, we identify the exciton multi-particle states and carry out a systematic study of the neutral exciton state dipole moment and polarizability. This analysis allows for the characterization of the exciton wavefunction properties at the single dot level for this type of quantum dots. Photocurrent measurements allow further characterization of exciton properties by electrical means, opening new possibilities for resonant excitation studies for such system.
description: 7 pages, 4 figures
Making the best of mixed-field orientation of polar molecules: A recipe for achieving adiabatic dynamics in an electrostatic field combined with laser pulses
Creators: name: Nielsen, Jens H.
name: Stapelfeldt, Henrik
name: Küpper, Jochen
name: Friedrich, Bretislav
name: Omiste, Juan J.
name: González-Férez, Rosario
Publisher: name: arXiv
Year: 2012
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We have experimentally and theoretically investigated the mixed-field orientation of rotational-state-selected OCS molecules and we achieve strong degrees of alignment and orientation. The applied moderately intense nanosecond laser pulses are long enough to adiabatically align molecules. However, in combination with a weak dc electric field, the same laser pulses result in nonadiabatic dynamics in the mixed-field orientation. These observations are fully explained by calculations employing, both, adiabatic and non-adiabatic time-dependent models.
description: 5 pages, 4 figures
ГЛОБАЛЛАШУВ ВА БАҒРИКЕНГЛИК ҒОЯСИ
Creators: name: Otamuratov, Sadulla
Publisher: name: Zenodo
Year: 2023

description: Ушбу мақола "глобаллашув" тушунчаси атрофлича таҳлил этилган бўлиб, унда таниқли олимларнинг глобаллашув жараёни ҳақидаги фикр-мулоҳазалари келтирилган. Бундан ташқари, глобаллашув билан бағрикенглик ўртасидаги муносабатларида маърифий омил устивор даражада амал қилиши, бунинг натижасида миллий-маънавий ва ахлоқий қадриятларининг миллий тараққиётга таъсирини ўтказиш имконияти кенгайиб бориши мумкинлиги қайд этилган.
e-MERLIN and VLBI observations of the luminous infrared galaxy IC883: a nuclear starburst and an AGN candidate revealed
Creators: name: Romero-Canizales, C.
name: Perez-Torres, M. A.
name: Alberdi, A.
name: Argo, M. K.
name: Beswick, R. J.
name: Kankare, E.
name: Batejat, F.
name: Efstathiou, A.
name: Mattila, S.
name: Conway, J. E.
name: Garrington, S. T.
name: Muxlow, T. W. B.
name: Ryder, S. D.
name: Vaisanen, P.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The high star formation rates of luminous infrared galaxies (LIRGs) make them ideal places for core-collapse supernova (CCSN) searches. At radio frequencies, free from dust extinction, it is possible to detect compact components within the innermost LIRG nuclear regions, such as SNe and SN remnants, as well as AGN buried deep in the LIRG nuclei. We studied the LIRG IC883 aiming at: (i) investigating its (circum-)nuclear regions using the e-EVN at 5GHz, and e-MERLIN at 6.9GHz, complemented by archival VLBI data; (ii) detecting at radio frequencies the two recently reported circumnuclear SNe 2010cu and 2011hi, which were discovered by near-IR (NIR) adaptive optics observations of IC883; and (iii) further investigating the nature of SN2011hi at NIR by means of observations with Gemini-North. The circumnuclear regions traced by e-MERLIN at 6.9GHz have an extension of ~1kpc, and show a striking double-sided structure, which very likely corresponds to a warped rotating ring, in agreement with previous studies. Our e-EVN observations at 5GHz and complementary archival VLBI data at 5GHz and 8.4GHz, reveal the presence of various milliarcsec compact components in the nucleus of IC883. A single compact source, an AGN candidate, dominates the emission at both nuclear and circumnuclear scales, as imaged with the e-EVN and e-MERLIN, respectively. The other milliarcsec components are very suggestive of ongoing nuclear CCSN activity. Our e-EVN observations also resulted in upper limits to the radio luminosity of the two SNe in IC883 recently discovered at NIR. We refine the classification of SN2011hi as a Type IIP SN according to our latest Gemini-North epoch from 2012, in agreement with a low-luminosity radio SN nature. We estimate a CCSN rate lower limit of 1.1_{-0.6}^{+1.3} yr^{-1} for the entire galaxy, based on three nuclear radio SNe and the circumnuclear SNe 2010cu and 2011hi. (abridged)
description: 9 pages, 5 figures and 2 tables. Accepted for publication in A&A
Transport and Energetics of Bacterial Rectification
Creators: name: Anand, Satyam
name: Ma, Xiaolei
name: Guo, Shuo
name: Martiniani, Stefano
name: Cheng, Xiang
Publisher: name: arXiv
Year: 2023
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Physical sciences

description: Randomly moving active particles can be herded into directed motion by asymmetric geometric structures. Although such a rectification process has been extensively studied due to its fundamental, biological, and technological relevance, a comprehensive understanding of active matter rectification based on single particle dynamics remains elusive. Here, by combining experiments, simulations, and theory, we study the directed transport and energetics of swimming bacteria navigating through funnel-shaped obstacles -- a paradigmatic model of rectification of living active matter. We develop a microscopic parameter-free model for bacterial rectification, which quantitatively explains experimental and numerical observations and predicts the optimal geometry for the maximum rectification efficiency. Furthermore, we quantify the degree of time irreversibility and measure the extractable work associated with bacterial rectification. Our study provides quantitative solutions to long-standing questions on bacterial rectification and establishes a generic relationship between time irreversibility, particle fluxes, and extractable work, shedding light on the energetics of non-equilibrium rectification processes in living systems.
description: 27 pages, 11 figures
Stellar activity cycles in a model for magnetic flux generation and transport
Creators: name: Işık, Emre
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present results from a model for magnetic flux generation and transport in cool stars and a qualitative comparison of models with observations. The method combines an alpha-omega dynamo at the base of the convection zone, buoyant rise of magnetic flux tubes, and a surface flux transport model. Based on a reference model for the Sun, numerical simulations were carried out for model convection zones of G- and K-type main sequence and subgiant stars. We investigate magnetic cycle properties for stars with different rotation periods, convection zone depths, and dynamo strengths. For a Sun-like star with P_rot=9 d, we find that a cyclic dynamo can underly an apparently non-cyclic, 'flat' surface activity, as observed in some stars. For a subgiant K1 star with P_rot=2.8 d the long-term activity variations resemble the multi-periodic cycles observed in V711 Tau, owing to high-latitude flux emergence, weak transport effects and stochastic processes of flux emergence.
description: 4 pages, 2 figures. Proceedings of the IAU Symposium 286: Comparative Magnetic Minima: Characterizing Quiet Times in the Sun and Stars
Absolute instruments and perfect imaging in geometrical optics
Creators: name: Tyc, Tomas
name: Herzanova, Lenka
name: Sarbort, Martin
name: Bering, Klaus
Publisher: name: arXiv
Year: 2011
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We investigate imaging by spherically symmetric absolute instruments that provide perfect imaging in the sense of geometrical optics. We derive a number of properties of such devices, present a general method for designing them and use this method to propose several new absolute instruments, in particular a lens providing a stigmatic image of an optically homogeneous region and having a moderate refractive index range.
description: 20 pages, 9 images
Feature-based inspection and comparison of parts with free-form surfaces
Creators: name: Li, Yadong
Publisher: name: University of Calgary
Year: 2004

description: Bibliography: p. 185-204
description: Some pages are in colour.
description: In this research, a feature-based automatic localization and comparison method for free-form surface inspection is proposed. This method firstly defines and extracts necessary surface features from the measurement surface and the design model, and then localizes these two surfaces through two steps: the general and fine localizations. The general localization is a feature-based process that establishes the correspondence between measurement surface and design model based on the corresponding features of these two surfaces, and transforms the measurement surface to the design coordinate system. To establish the correspondence efficiently, a method called best-three-points is proposed, which selects only three pairs of the most similar features and uses them to decide the general corresponding relationship. In many inspections, it is very often that only portion of the surface requires inspections. For this case, a solution has been proposed to determine the correspondence by evaluating the geometric and topological information of the measurement data and design model. The fine localization focuses on the point to point correspondence and localizes the surfaces in such a way that the comparison can be made. The identification of the corresponding point in fine localization is carried out by searching a limited range of the neighbouring area of the result from general localization. This makes this process faster and more stable. Some techniques such as Subdivide-Grid and local range searching have been proposed to improve the robustness and stability of this process. For many engineering applications, the free-form surface is assigned profile tolerance with reference to design datums due to the consideration of assembly, functionality and other manufacturing requirements. The DDF (datum direction frame) approach has been proposed to solve this problem. The free-form surfaces studied m this research can have arbitrary positions and orientations in 3D space. The measurement data can be obtained by using either contact measuring facilities such as coordinate measuring machines (CMM) or through noncontact measurements such as laser scanners. Implementations and experiments have been carried out for verifying the overall methodologies.
Modeling web/TCP transfer latency
Creators: name: Li, Yujian Peter
Publisher: name: University of Calgary
Year: 2004

description: Bibliography: p. 92-98
description: Some pages are in colour.
description: This thesis proposes a new mathematical model to predict TCP transfer latency for shortlived flows with random packet losses, which are representative of TCP flows carrying Web traffic. Unlike earlier stochastic models, the new model characterizes a data transfer as alternating cycles, with TCP state information carried over from one cycle to the next. Model validation through simulation experiments indicates that the new model's predictions match the simulation results better than earlier models [4][5][40], and surprisingly, the new model fits long-lived TCP flows as well. The proposed model is then extended to Partial CATNIP TCP. CATNIP TCP [49] classifies packets in a flow as high and low priority based on the observation that not all TCP packet losses have the same effect on the data transfer time. Partial CATNIP TCP is different from CATNIP TCP in that it does not consider as high-priority packets sent when the TCP congestion window size is small. Simulation experiments show that the differences between Partial CATNIP TCP and CATNIP TCP are minimal when the packet loss probability is less than 10%, for short-lived flows and long-lived flows. The Partial CATNIP TCP model is validated through simulation experiments. The results show that the Partial CATNIP TCP model fits the simulation closely. In addition, performance comparisons between Partial CATNIP TCP and TCP Reno demonstrate that for short-lived flows, Partial CATNIP TCP is 10% (or more) faster than TCP Reno in most cases. For long-lived flows, Partial CATNIP TCP overall is 7% (or more) faster than TCP Reno. Therefore, CATNIP TCP is a suitable approach to improve TCP performance.
title: Rezension: Robin, Jésabel & Zimmermann, Martina (Hrsg.) (2022): La didactique des langues dans la formation initiale des enseignant.e.s en Suisse. Quelles postures scientifiques face aux pratiques de terrain? Fremdsprachendidaktik in der Schweizer Lehrer*innenbildung. An welchen wissenschaftlichen Positionen orientiert sich die Praxis? Bruxelles, Berlin, Bern, New York, Oxford, Warszawa, Wien: Peter Lang. ISBN: 978-2-8076-1934-0. 248 Seiten. 40 € (Taschenbuch oder E-Book)
Creators: name: Zingg, Irène
Publisher: name: Universitäts- und Landesbibliothek Darmstadt
Year: 2023

description: Die Umwandlung der ehemaligen Lehrerseminarien in Pädagogische Hochschulen prägt die Konzeption der Fremdsprachendidaktik in der Schweiz. Parallel zu dieser Tertiarisierung verläuft eine Debatte über die Konstituierung der Fremdsprachendidaktik als wissenschaftliche Disziplin in einem von Interdisziplinarität geprägten Feld. Die Aushandlung von wissenschaftlichen Positionen im Bereich der Fremdsprachendidaktik wie auch die Ausgestaltung der neuen Aufgabenbereiche eines vierfachen Leistungsauftrages (Lehre, Forschung, Weiterbildung und Dienstleistung) verläuft an den Institutionen, die in der Schweiz Lehrpersonen ausbilden, je unterschiedlich. Am Ausgangspunkt des von den beiden Fachdidaktikerinnen Jésabel Robin und Martina Zimmermann initiierten Sammelbandes stehen die folgenden Fragen: Wie werden didaktische Legitimitäten innerhalb der Bildungsinstitutionen, der Wissenschaftlichkeit und der Dynamik der Disziplinwerdung, der Entwicklung und Eigenständigkeit der Fachdidaktiken ausgehandelt und wie verbinden sich Sprachdidaktik und weitere Disziplinen? Die aus der Praxis und der Forschung kommenden Autorinnen und Autoren beziehen sich auf unterschiedliche institutionelle Kontexte und vertreten alle vier Sprachregionen der Schweiz. Dabei lässt sich entlang der Sprachgrenzen zuweilen ein differentes, disziplinäres Verständnis der Fremdsprachendidaktik erahnen, was auf die unterschiedlichen theoretischen Verankerungen und die divergente Epistemologie der Nachbarländer verweist. Der Band bündelt neun thematische Beiträge, die in drei Kapitel eingereiht sind und von einer zweisprachig verfassten Einleitung der beiden Herausgeberinnen sowie einem Schlusspunkt von Christiane Fäcke gerahmt sind.
Direct Observation of a Semi-Bare Electron Coulomb Field Recover
Creators: name: Naumenko, G.
name: Popov, Yu.
name: Shevelev, M.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Accelerator Physics (physics.acc-ph)
subject: FOS: Physical sciences

description: The problem of "semi-bare electron" was first considered in frame of quantum electrodynamics by E.L. Feinberg in 1980. In theory in frame of classical electrodynamics this problem was touched on in articles of N.F. Shul'ga and X. Artru. In 2008 the experimental investigations of this phenomenon in millimeter wavelength region were started by the group of scientists, including authors of this article. Used technique allowed us to study this effect in macroscopic mode. In this paper we present the results of direct observation of a semi-bare electron coulomb field recovery. The semi-bare state was obtained by passing of electron beam through the hole in a conductive screen. Measured spatial distribution of electromagnetic field shows the process of recover of the electron coulomb field, which is followed by a forward radiation. The experiments were performed on the relativistic electron beam of the microtron of Tomsk Polytechnic University.
description: The article will published in Journal of Physics
Improving tracking performance of PLL in high dynamic applications
Creators: name: Lian, Ping
Publisher: name: University of Calgary
Year: 2005

description: Bibliography: p. 141-144
description: The Phase-locked loop (PLL) is used in GPS receivers to track an incoming signal and to provide accurate carrier phase measurements. However, the PLL tracking performance and measurement accuracy are affected by a number of factors, such as signal-to-noise power ratio, Doppler frequency shift, the GPS receiver's jitter caused by vibration, and the Allan deviation. Among these factors, the thermal noise and Doppler shift are the most predominant and have a large influence on the design of the PLL. In high dynamic situations, the conflict between improving PLL tracking performance and the ability to track the signal necessitates some compromises in PLL design. This thesis investigates the strategies to resolve this conflict. Three methods are investigated to improve PLL tracking performance in high dynamic applications: a Kalman filter-based tracking algorithm, application of a wavelet denoising technique in PLL, and an adaptive bandwidth algorithm. The Kalman filter-based tracking algorithm makes use of a carrier phase dynamic model and a measurement from the output of the discriminator to estimate the phase difference between the incoming signal and the Numerical Controlled Oscillator (NCO) output, Doppler frequency and the change rate of Doppler frequency. The wavelet de-noising technique effectively decreases the noise level and allows broadening of the PLL bandwidth to track high dynamics signals. The adaptive bandwidth PLL algorithm adapts the bandwidth of the PLL according to the estimation of the incoming signal dynamics and noise level. The performance is evaluated in terms of signal-to-noise ratios and dynamic variations using simulating signals. The first two methods are found to produce better improvements when the signal-to-noise ratio is low and the signal dynamic is high. The third method works well under high signal-to-noise ratios and less random dynamic variations. The results show that these methods outperform the ordinary PLL under high dynamic conditions and the resulting carrier phase measurement is more accurate.
Universal behavior of the upper critical field in iron based superconductors
Creators: name: Zhang, J. L.
name: Jiao, L.
name: Chen, Y.
name: Yuan, H. Q.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The newly discovered iron-based high temperature superconductors have demonstrated rich physical properties. Here we give a brief review on the recent studies of the upper critical field and its anisotropy in a few typical series of the iron-based superconductors (FeSCs). In spite of their characters of a layered crystal structure, all the FeSCs possess an extremely large upper critical field and a weak anisotropy of superconductivity, being unique among the layered superconductors. These particular properties indicate potential applications of the FeSCs in the future. Based on the experimental facts of the FeSCs, we will discuss the possible mechanisms of pair breaking in high magnetic fields and its restrictions on the theoretical analysis of the superconducting pairing mechanisms.
description: 24 pages, 10 figures
Spin-transfer mechanism for magnon-drag thermopower
Creators: name: Lucassen, M. E.
name: Wong, C. H.
name: Duine, R. A.
name: Tserkovnyak, Y.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We point out a relation between the dissipative spin-transfer-torque parameter $β$ and the contribution of magnon drag to the thermoelectric power in conducting ferromagnets. Using this result we estimate $β$ in iron at low temperatures, where magnon drag is believed to be the dominant contribution to the thermopower. Our results may be used to determine $β$ from magnon-drag-thermopower experiments, or, conversely, to infer the strength of magnon drag via experiments on spin transfer.
The quest for complex molecules in space: Laboratory spectroscopy of n-butyl cyanide, n-C4H9CN, in the millimeter wave region and its astronomical search in Sagittarius B2(N)
Creators: name: Ordu, M. H.
name: Müller, H. S. P.
name: Walters, A.
name: Nuñez, M.
name: Lewen, F.
name: Belloche, A.
name: Menten, K. M.
name: Schlemmer, S.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: The saturated n-propyl cyanide was recently detected in Sagittarius B2(N). The next larger unbranched alkyl cyanide is n-butyl cyanide. We provide accurate rest frequency predictions beyond the millimeter wave range to search for this molecule in the Galactic center source Sagittarius B2(N) and facilitate its detection in space. We investigated the laboratory rotational spectrum of $n$-butyl cyanide between 75 GHz and 348 GHz. We searched for emission lines produced by the molecule in our sensitive IRAM 30 m molecular line survey of Sagittarius B2(N). We identified more than one thousand rotational transitions in the laboratory for each of the three conformers for which limited data had been obtained previously in a molecular beam microwave study. The quantum number range was greatly extended to J ~ 120 or more and Ka > 35, resulting in accurate spectroscopic parameters and accurate rest frequency calculations up to about 500 GHz for strong to moderately weak transitions of the two lower energy conformers. Upper limits to the column densities of N <= 3 x 10E15 cm-2 and 8 x 10E15 cm-2 were derived towards Sagittarius B2(N) for the two lower energy conformers, anti-anti and gauche-anti, respectively. Our present data will be helpful for identifying n-butyl cyanide at millimeter or longer wavelengths with radio telescope arrays such as ALMA, NOEMA, or EVLA. In particular, its detection in Sagittarius B2(N) with ALMA seems feasible.
description: 8 pages, 4 figures, accepted for publication in Astronomy and Astrophysics
O'ZBEKISTON RESPUBLIKASIDA ARBITRAJ JARAYONINI RAQAMLASHTIRISH MASALALARI (TEZIS)
Creators: name: Bahodirova, Sitora
Publisher: name: Zenodo
Year: 2023

description: O'zbekistonda hakamlik sudlari, xalqaro arbitraj, onlayn va elektron arbitraj faoliyatini tashkil etish va davlat tomonidan qo'llab-quvvatlash mamlakatda olib borilayotgan sud islohotlarini ta'minlash va iqtisodiyotni liberallashtirish, shuningdek, xususiylashtirishni kengaytirish, xo'jalik yurituvchi subyektlar sonini ko'paytirish va ular o'rtasidagi nizolarni hal etishga yordam beradi.
Non linear pseudo-bosons versus hidden Hermiticity. II: The case of unbounded operators
Creators: name: Bagarello, Fabio
name: Znojil, Miloslav
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mathematical Physics (math-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Parallels between the notions of nonlinear pseudobosons and of an apparent non-Hermiticity of observables as shown in paper I (arXiv: 1109.0605) are demonstrated to survive the transition to the quantum models based on the use of unbounded metric in the Hilbert space of states.
description: 21 pp
YONG'IN SODIR BO'LGANDA NIMA QILISH KERAK?  YONG'IN BO'LGANDA  XAVFSIZLIK QOIDALARI VA ASOSIY TAVSIYALAR
Creators: name: Sultonov, U.B.
Publisher: name: Zenodo
Year: 2023

description: Yong'in yuz berganda uni o'chirish uchun qilinishi kerak bo'lgan dastlabki harakatlar, xavfsizlik qoidalari, uy, ko'p qavatli bino, avtomobil, jamoat transporti, o'rmon yoki dashtda sodir bo'lsa, nima qilishi kerakligi, yong'in o'chiruvchilarga xabar berish tartibi quyidagicha amalga oshiriladi.
Nanoscale buckling deformation in layered copolymer materials
Creators: name: Makke, Ali
name: Perez, Michel
name: Lame, Olivier
name: Barrat, Jean-Louis
Publisher: name: arXiv
Year: 2012
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: In layered materials, a common mode of deformation involves buckling of the layers under tensile deformation in the direction perpendicular to the layers. The instability mechanism, which operates in elastic materials from geological to nanometer scales, involves the elastic contrast between different layers. In a regular stacking of "hard" and "soft" layers, the tensile stress is first accommodated by a large deformation of the soft layers. The inhibited Poisson contraction results in a compressive stress in the direction transverse to the tensile deformation axis. The hard layers sustain this transverse compression until buckling takes place and results in an undulated structure. Using molecular simulations, we demonstrate this scenario for a material made of triblock copolymers. The buckling deformation is observed to take place at the nanoscale, at a wavelength that depends on strain rate. In contrast to what is commonly assumed, the wavelength of the undulation is not determined by defects in the microstructure. Rather, it results from kinetic effects, with a competition between the rate of strain and the growth rate of the instability. http://www.pnas.org/content/early/2011/12/23/1111367109.abstract
Post-Newtonian Gravitational Waves with cosmological constant $Λ$ from the Einstein-Hilbert theory
Creators: name: Escobedo, Ricardo
name: Moreno, Claudia
name: Hernández-Jiménez, Rafael
Publisher: name: arXiv
Year: 2023
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We study the Post-Newtonian approach implemented to the Einstein-Hilbert action adding the cosmological constant $Λ$ at 1PN order. We consider very small values of $Λ$ to derive the Lagrangian of a two body compact system at the center of mass frame at 1PN. Furthermore, the phase function $ϕ(t)$ is obtained from the balance equation and the two polarizations $h_{+}$ and $h_{\times}$ are also calculated. We observe changes due to $Λ$ only at very low frequencies and we notice that it plays the role of "stretch" the spacetime such that both amplitudes become smaller; however, given its nearly negligible value, $Λ$ has no relevance at higher frequencies whatsoever.
description: 20 pages, 7 figures
ЭЛЕКТРОН БИТИМЛАРНИ ҲУҚУҚИЙ ТАРТИБГА СОЛИШНИНГ ХУСУСИЯТЛАРИ
Creators: name: Санақулова, Мадина
Publisher: name: Zenodo
Year: 2023

description: Бугунги жадал ривожланиш даврида ҳукумат ва президент ахборот коммуникация сектори ва айниқса, рақамли иқтисодиётни, шу жумладан электрон тижоратни ривожлантиришга катта аҳамият бермоқда.
MPEC 2023-H47 : 2023 GA3
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2023 GA3

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Intrinsic antiferromagnetic topological insulator and axion state in V2WS4
Creators: name: Jiang, Yadong
name: Wang, Huan
name: Bao, Kejie
name: Wang, Jing
Publisher: name: arXiv
Year: 2023
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Intrinsic magnetic topological insulators offers an ideal platform to explore exotic topological phenomena, such as axion electrodynamics, quantum anomalous Hall (QAH) effect and Majorana edge modes. However, these emerging new physical effects have rarely been experimentally observed due to the limited choice of suitable materials. Here, we predict the van der Waals layered V$_2$WS$_4$ and its related materials show intralayer ferromagnetic and interlayer antiferromagnetic exchange interactions. We find extremely rich magnetic topological states in V$_2$WS$_4$, including an antiferromagnetic topological insulator, the axion state with the long-sought quantized topological magnetoelectric effect, three-dimensional QAH state, as well as a collection of QAH insulators and intrinsic axion insulators in odd- and even-layer films, respectively. Remarkably, the Néel temperature of V$_2$WS$_4$ is predicted to be much higher than that of MnBi$_2$Te$_4$. These interesting predictions, if realized experimentally, could greatly promote the topological quantum physics research and application.
description: 7 pages, 4 figures
Identifying physiological substrates of DNA-dependent protein kinase (DNA-PK)
Creators: name: Bader, Mohamed
Publisher: name: University of Calgary
Year: 2004

description: Bibliography: p. 131-150
description: The DNA-dependent protein kinase (DNA-PK) is required for the repair of DNA double strand breaks (DSB) in human cells. DNA-PK is a serine/threonine protein kinase composed of a 469 kDa catalytic subunit (DNA-PKcs) and a DNA targeting subunit, Ku. Previous studies have demonstrated a requirement of the protein kinase activity of DNA-PK during non homologous end joining-mediated repair of DNA DSBs and during variable (diversity) joining [V(D)J] recombination. However, its physiological substrates are not well defined. Here we have utilized a broad-based proteomics approach to attempt to identify DNA-PK-dependent phosphorylation events. Utilizing a more targeted approach involving immunoprecipitation of DNA-PKcs, an ionizing radiation-dependent interaction between DNA-PKcs and p53 transcription factor was identified in human lymphoblastoid cells.
Kostant's generating functions and McKay-Slodowy correspondence
Creators: name: Jing, Naihuan
name: Li, Zhijun
name: Wang, Danxia
Publisher: name: arXiv
Year: 2023
Subjects: subject: Representation Theory (math.RT)
subject: Quantum Algebra (math.QA)
subject: FOS: Mathematics

description: Let $N\unlhd G$ be a pair of finite subgroups of $\mathrm{SL}_2(\mathbb{C})$ and $V$ a finite-dimensional fundamental $G$-module. We study Kostant's generating functions for the decomposition of the $\mathrm{SL}_2(\mathbb C)$-module $S^k(V)$ restricted to $N\lhd G$ in connection with the McKay-Slodowy correspondence. In particular, the classical Kostant formula was generalized to a uniform version of the Poincaré series for the symmetric invariants in which the multiplicities of any individual module in the symmetric algebra are completely determined.
description: 15 pages
Determinants of risk factors for COVID-19 transmission in densely populated areas: Insights from the first wave of the pandemic
Creators: name: Nurlinawati, Iin
name: Sumiarsih, Mimi
name: Andarwati, Pramita
name: Andayasari, Lely
name: Efendi, Ferry
name: Bushy, Angeline
Publisher: name: La Trobe
Year: 2023
Subjects: classificationCode: 4203
subject: Health services and systems
classificationCode: 3202
subject: Clinical sciences
classificationCode: 320211
subject: Infectious diseases

description: Introduction: COVID-19 spreads quickly, especially in densely populated countries like Indonesia. Understanding transmission factors can support in reducing transmission rates. The purpose of this study is to analyze the various factors that may contribute to the transmission of COVID-19 in Indonesia, especially in the first wave of pandemic.Methods: This was a cross sectional study design. The sample was selected from the new all record data or the database for recording COVID-19 cases at the health office at the research location by online system. The research was conducted in seven districts and cities across three provinces to obtain an overview of transmission in each regional characteristic. The number of samples was as high as 2,010, with confirmed cases and close contacts in Banda Aceh City, Aceh Besar District, Semarang City, Magelang District, Ternate City, South Halmahera District, and Tidore Islands City. Data analysis was done descriptively and were analyzed using Chi-square and logistic regression with SPSS software.Results: The multivariate analysis shows that five dominant factors the risk of COVID-19 transmission, there are, age, employment status, activities outside the home, medical history, and vaccination status. Age group of 20-39 years (odds ratio [OR]=1.6-1.7; 95% confidence interval [CI] 1.07-2.71), working of employment status (OR=1.51; 95% CI 1.10-2.07), have a comorbid in medical history (OR=2.39; 95% CI 1.67-3.4), have activities outside home (OR=1.82, 95% CI 1.39-2.39), and have not been vaccinated of COVID-19 (OR=3.03; 95% CI 3.37-3.87) were significantly related with an increased risk of COVID-19 transmission.Conclusions: Productive age, work and activities outside the home, having comorbidities, and not having received COVID-19 vaccination are all risk factors for COVID-19 exposure. Eliminating all of these factors at the same time will undoubtedly be difficult. As a result, cross-sectoral collaboration is needed to control the spread of COVID-19 at the community and individual levels, as well as to support policy interventions to accelerate the elimination of COVID-19 cases.
Ionosphere tomographic modeling and applications using Global Positioning System (GPS) measurements
Creators: name: Liu, Zhizhao
Publisher: name: University of Calgary
Year: 2004

description: Bibliography:p. 288-304
description: Some pages are in colour.
description: Precise ionosphere modeling is crucial and remains as a challenge for GPS positioning and navigation as well as many other Earth Observation Systems. This research develops and analyzes a new ionospheric modeling system based on a multiple-layer tomographic technique using spherical harmonic functions and empirical orthogonal functions in combination with Kalman filter estimator to perform real-time ionospheric modeling and perform ionospheric TEC predictions. A close form expression that links the smoothed TEC measurements and the tomographic model has been developed, which allows the simultaneous execution of TEC smoothing and model estimation and ionospheric TEC prediction. This system is feasible for real-time implementation to generate TEC predictions to support real-time GPS positioning and other real-time applications. In order to assess the accuracies of the ionospheric TEC prediction data, three quantitative indicators are proposed to evaluate the prediction performance. The tomographic model proposed in this research is function-based, which is computationally more efficient than tomographic models that are based on voxel concept and overcomes the limitations associated with single-layer ionospheric models. Comprehensive data analyses have been conducted to assess the model using data from different types of GPS networks and acquired under both ionosphere quiet and disturbed conditions. The model performance has been assessed using different elevation angles and prediction intervals. The numerical results at the independent user station show that over a local area GPS network using an elevation cutoff of 15°, the vertical TEC data predicted at 5-min or 10-min interval have an accuracy of 3.5~4.3 TECU during ionospheric quiet time period. An accuracy of 5.9 TECU can be obtained using a 30-min prediction interval. Over a wide area GPS network using an elevation cutoff of 15°, the 5- min and 10-min VTEC predictions have an accuracy about 5.0~5.8 TECU and the 30- min predictions about 5.5~5.9 TECU during ionospheric quiet day. During ionospheric disturbed day, the 5-min and 10-min VTEC predictions have an accuracy about 5.2~6.1 TECU and the vertical TEC prediction accuracy is about 5.8~6.7 TECU using a 30-min prediction interval.
Personalia
Creators: name: Redaktion, Die
Publisher: name: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Year: 2020

description: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege, Bd. 4 Nr. 3 (1951): Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Interface: a written accompaniment to the thesis exhibition
Creators: name: Kendrick, Joan
Publisher: name: University of Calgary
Year: 2004

description: Bibliography: p. 61-63
description: This paper explores my exploration of archetypes with sculpture placed within installation spaces. Greek and Celtic myths are assessed for their archetypal contents and for their abilities to inspire sculpture. Myths associated with Artemis, the Greek goddess of the hunt, are examined. The inspiration of my artistic process is discussed, including wave phenomena and the body. The visual images and theories of inspirational artists, including Joseph Beuys, Wassily Kandinsky, and Frida Kahlo, and psychologists, such as Carl Jung are examined. Tripartite relationships inherent in my sculpture are investigated and utilized as an analysis tool for the examination of my thesis exhibition, Interface.
Second-order superposition operations via Hong-Ou-Mandel interference
Creators: name: Lee, Su-Yong
name: Nha, Hyunchul
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We propose an experimental scheme to implement a second-order nonlocal superposition operation and its variants by way of Hong-Ou-Mandel interference. The second-order coherent operations enable us to generate a NOON state with high particle number in a heralded fashion and also can be used to enhance the entanglement properties of continuous variable states. We discuss the feasibility of our proposed scheme considering realistic experimental conditions such as on-off photodetectors with nonideal efficiency and imperfect single-photon sources.
description: published version, 6 pages, 6 figures
Ausstellungskalender
Creators: name: Redaktion, Die
Publisher: name: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Year: 2020

description: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege, Bd. 4 Nr. 6 (1951): Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Simulations of paternal signification in Bret Easton Ellis's "American Psycho" and Chuch Palahniuk's "Fight Club"
Creators: name: Kennett, Paul J.
Publisher: name: University of Calgary
Year: 2004

description: Bibliography: p. 120-122
description: This thesis argues that the novels American Pscyho by Bret Easton Ellis and Fight Club by Chuck Palahniuk present a vision of the late twentieth century West in which Oedipal paternal authority gives way in favour of a paternity of media and consumer culture. With reference to the writings of European psychoanalytic critic Slavoj Zizek, Jean Baudrillard's theories of simulacra and simulation, Christopher Lasch's writing on pathological narcissism, and Naomi Klein's writing on corporate branding, the thesis demonstrates that the resulting social climate represented by the novels is indeterminate for heterosexual males subjects. The metamorphosis of paternal signifiers into simulated signifiers result in male subjects without internalized authority. The novels ultimately dramatize an environment where the pathological narcissist has progressed from marginal affliction to a social norm.
On type-I migration near opacity transitions. A generalized Lindblad torque formula for planetary population synthesis
Creators: name: Masset, F. S.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We give an expression for the Lindblad torque acting on a low-mass planet embedded in a protoplanetary disk that is valid even at locations where the surface density or temperature profile cannot be approximated by a power law, such as an opacity transition. At such locations, the Lindblad torque is known to suffer strong deviation from its standard value, with potentially important implications for type I migration, but the full treatment of the tidal interaction is cumbersome and not well suited to models of planetary population synthesis. The expression that we propose retains the simplicity of the standard Lindblad torque formula and gives results that accurately reproduce those of numerical simulations, even at locations where the disk temperature undergoes abrupt changes. Our study is conducted by means of customized numerical simulations in the low-mass regime, in locally isothermal disks, and compared to linear torque estimates obtained by summing fully analytic torque estimates at each Lindblad resonance. The functional dependence of our modified Lindblad torque expression is suggested by an estimate of the shift of the Lindblad resonances that mostly contribute to the torque, in a disk with sharp gradients of temperature or surface density, while the numerical coefficients of the new terms are adjusted to seek agreement with numerics. As side results, we find that the vortensity related corotation torque undergoes a boost at an opacity transition that can counteract migration, and we find evidence from numerical simulations that the linear corotation torque has a non-negligible dependency upon the temperature gradient, in a locally isothermal disk.
description: Appeared in special issue of "Celestial Mechanics and Dynamical Astronomy" on Extrasolar Planetary Systems
Syntectonic vein formation in the Rundle Thrust sheet near Canmore, Alberta
Creators: name: Armeneau, Carrie
Publisher: name: University of Calgary
Year: 2004

description: Bibliography: p. 139-147
description: Some pages are in colour.
description: Syntectonic veins provide a record of both pore/connate and meteoric fluids present during emplacement of the Rundle Thrust sheet near Canmore, Alberta. Comparison of §180 values of host rocks (-11.39 to -3.34%0 VPDB) and veins reveals that veins are depleted to varying degrees with respect to corresponding host rocks. Moderately 18OdepIeted veins (S18O values > -13%o VPDB), that are mineralogically-controlled by host rocks, are interpreted as having formed in a rock-dominated closed system with a connate fluid source. Conversely, a water-dominated open system with a meteoric fluid source is characterized by calcite veins (regardless of host rock mineralogy) with S18O values < -13%o VPDB. Quadrupole mass spectrometry lends support to this interpretation, with fluid inclusion contents in closed system veins containing varying amounts of CO2, CH4 and H2S (in addition to water), as influenced by the respective host rock. Regardless of the host rock, open system vein fluid inclusions are water-rich.
This is boring! Engaging and connecting at-risk 12-year-old boys to learning.
Creators: name: Adams, Emelie Jane
name: Gabbert, Emelie
Publisher: name: CQUniversity
Year: 2023
Subjects: classificationCode: 390102
subject: Curriculum and pedagogy theory and development

description: Students particularly adolescent boys, become disengaged at school for a variety of reasons. This research looks at an alternative program to re-engage and re-connect a group of 12-year-old boys to their learning environment, providing opportunities to achieve and be successful at school, leading to full and happy lives.