cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: ÐÑÐ¿Ð¾Ð»ÑÐ·Ð¾Ð²Ð°Ð½Ð¸Ðµ Ð¿Ð¾Ð´Ñ Ð¾Ð´Ð¾Ð² ÐºÐ¾ÑÐ¿ÑÑÐ½Ð¾Ð¹ Ð»Ð¸Ð½Ð³Ð²Ð¸ÑÑÐ¸ÐºÐ¸ Ð¿ÑÐ¸ ÑÐ¾ÑÐ¼Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ð¸ Ð»ÐµÐºÑÐ¸ÐºÐ¾-Ð³ÑÐ°Ð¼Ð¼Ð°ÑÐ¸ÑÐµÑÐºÐ¾Ð¹ ÑÐ¾ÑÑÐ°Ð²Ð»ÑÑÑÐµÐ¹ ÑÐ·ÑÐºÐ¾Ð²Ð¾Ð¹ ÐºÐ¾Ð¼Ð¿ÐµÑÐµÐ½ÑÐ¸Ð¸ ÑÑÑÐ´ÐµÐ½ÑÐ¾Ð²-Ð»Ð¸Ð½Ð³Ð²Ð¸ÑÑÐ¾Ð² (Ð½Ð° Ð¼Ð°ÑÐµÑÐ¸Ð°Ð»Ðµ ÐºÐ¾ÑÐ¿ÑÑÐ° Ð¸ÑÐ¿Ð°Ð½ÑÐºÐ¾Ð³Ð¾ ÑÐ·ÑÐºÐ° COCA EspaÃ±ol)
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ°
titleType: Subtitle
title: Corpus-based approach to developing lexical and grammatical competencies of students, studying linguistics (A case study based on the language corpus COCA EspaÃ±ol)
Creators: name: ÐÐ°ÑÐ¸Ð¿Ð¾Ð²Ð°, ÐÐ°Ð¼Ð¸Ð»Ñ
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2019
Subjects: ÑÐ·ÑÐºÐ¾Ð²Ð°Ñ ÐºÐ¾Ð¼Ð¿ÐµÑÐµÐ½ÑÐ¸Ñ
Ð»ÐµÐºÑÐ¸ÑÐµÑÐºÐ°Ñ ÐºÐ¾Ð¼Ð¿ÐµÑÐµÐ½ÑÐ¸Ñ
Ð³ÑÐ°Ð¼Ð¼Ð°ÑÐ¸ÑÐµÑÐºÐ°Ñ ÐºÐ¾Ð¼Ð¿ÐµÑÐµÐ½ÑÐ¸Ñ
ÐºÐ¾ÑÐ¿ÑÑÐ½Ð°Ñ Ð»Ð¸Ð½Ð³Ð²Ð¸ÑÑÐ¸ÐºÐ°
Ð¸ÑÐ¿Ð°Ð½ÑÐºÐ¸Ð¹ ÑÐ·ÑÐº
Ð²ÑÐ¾ÑÐ¾Ð¹ Ð¸Ð½Ð¾ÑÑÑÐ°Ð½Ð½ÑÐ¹ ÑÐ·ÑÐº
language competence
lexical competence
grammatical competence
Corpus Linguistics
Spanish language
second foreign language

description: Ð Ð´Ð°Ð½Ð½Ð¾Ð¹ ÑÐ°Ð±Ð¾ÑÐµ Ð¿ÑÐ¾Ð°Ð½Ð°Ð»Ð¸Ð·Ð¸ÑÐ¾Ð²Ð°Ð½ Ð¼ÐµÑÐ¾Ð´Ð¸ÑÐµÑÐºÐ¸Ð¹ Ð¿Ð¾ÑÐµÐ½ÑÐ¸Ð°Ð» Ð»Ð¸Ð½Ð³Ð²Ð¸ÑÑÐ¸ÑÐµÑÐºÐ¸Ñ ÐºÐ¾ÑÐ¿ÑÑÐ¾Ð² Ð´Ð»Ñ ÑÐ¾ÑÐ¼Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ Ð»ÐµÐºÑÐ¸ÑÐµÑÐºÐ¾Ð¹ Ð¸ Ð³ÑÐ°Ð¼Ð¼Ð°ÑÐ¸ÑÐµÑÐºÐ¾Ð¹ ÑÐ¾ÑÑÐ°Ð²Ð»ÑÑÑÐ¸Ñ ÑÐ·ÑÐºÐ¾Ð²Ð¾Ð¹ ÐºÐ¾Ð¼Ð¿ÐµÑÐµÐ½ÑÐ¸Ð¸ Ð¸ÑÐ¿Ð°Ð½ÑÐºÐ¾Ð³Ð¾ ÑÐ·ÑÐºÐ° ÐºÐ°Ðº Ð²ÑÐ¾ÑÐ¾Ð³Ð¾ Ð¸Ð½Ð¾ÑÑÑÐ°Ð½Ð½Ð¾Ð³Ð¾ Ð² ÑÐ·ÑÐºÐ¾Ð²Ð¾Ð¼ Ð²ÑÐ·Ðµ Ð¿ÑÑÑÐ¼ ÑÐ¾Ð·Ð´Ð°Ð½Ð¸Ñ Ð°Ð²ÑÐ¾ÑÑÐºÐ¾Ð³Ð¾ ÐºÐ¾Ð¼Ð¿Ð»ÐµÐºÑÐ° ÑÐ¿ÑÐ°Ð¶Ð½ÐµÐ½Ð¸Ð¹ Ð½Ð° Ð±Ð°Ð·Ðµ ÐºÐ¾ÑÐ¿ÑÑÐ½Ð¾Ð³Ð¾ Ð¿Ð¾Ð´ÑÐ¾Ð´Ð°. ÐÑÐ¸Ð²ÐµÐ´ÐµÐ½Ñ Ð¾Ð±ÑÐ¸Ðµ ÑÐµÐ¾ÑÐµÑÐ¸ÑÐµÑÐºÐ¸Ðµ Ð¿Ð¾Ð½ÑÑÐ¸Ñ ÐºÐ¾ÑÐ¿ÑÑÐ½Ð¾Ð¹ Ð»Ð¸Ð½Ð³Ð²Ð¸ÑÑÐ¸ÐºÐ¸ Ð¸ ÑÐ·ÑÐºÐ¾Ð²Ð¾Ð¹ ÐºÐ¾Ð¼Ð¿ÐµÑÐµÐ½ÑÐ¸Ð¸. ÐÑÐ¾Ð²ÐµÐ´ÑÐ½ Ð°Ð½Ð°Ð»Ð¸Ð· ÑÐµÐ·ÑÐ»ÑÑÐ°ÑÐ¾Ð² ÑÐºÑÐ¿ÐµÑÐ¸Ð¼ÐµÐ½ÑÐ°, Ð´Ð°Ð½Ð° Ð¾ÑÐµÐ½ÐºÐ° Ð¸ÑÐ¿Ð¾Ð»ÑÐ·Ð¾Ð²Ð°Ð½Ð¸Ñ ÐºÐ¾ÑÐ¿ÑÑÐ° Ð² ÑÑÐµÐ±Ð½Ð¾Ð¼ Ð¿ÑÐ¾ÑÐµÑÑÐµ Ð¸ ÐµÐ³Ð¾ Ð²Ð»Ð¸ÑÐ½Ð¸Ñ Ð½Ð° Ð¼Ð¾ÑÐ¸Ð²Ð°ÑÐ¸Ñ ÑÑÐ°ÑÐ¸ÑÑÑ Ðº ÑÐ°Ð¼Ð¾ÑÑÐ¾ÑÑÐµÐ»ÑÐ½Ð¾Ð¹ ÑÐ°Ð±Ð¾ÑÐµ.
description: This paper analyses the efficiency of using language corpora for developing lexical and grammatical competencies of the Spanish language as a second foreign language in a specialized university by creating a set of activities on corpus-based approach. The main theoretical framework on Corpus Linguistics and Language Competence is examined. The analysis of findings is undertaken and the contribution of language corpora to teaching and learning processes and encouraging studentsâ autonomy is assessed.
A Joint Python/C++ Library for Efficient yet Accessible Black-Box and Gray-Box Optimization with GOMEA
Creators: name: Bouter, Anton
name: Bosman, Peter A. N.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Neural and Evolutionary Computing (cs.NE)
subject: FOS: Computer and information sciences

description: Exploiting knowledge about the structure of a problem can greatly benefit the efficiency and scalability of an Evolutionary Algorithm (EA). Model-Based EAs (MBEAs) are capable of doing this by explicitly modeling the problem structure. The Gene-pool Optimal Mixing Evolutionary Algorithm (GOMEA) is among the state-of-the-art of MBEAs due to its use of a linkage model and the optimal mixing variation operator. Especially in a Gray-Box Optimization (GBO) setting that allows for partial evaluations, i.e., the relatively efficient evaluation of a partial modification of a solution, GOMEA is known to excel. Such GBO settings are known to exist in various real-world applications to which GOMEA has successfully been applied. In this work, we introduce the GOMEA library, making existing GOMEA code in C++ accessible through Python, which serves as a centralized way of maintaining and distributing code of GOMEA for various optimization domains. Moreover, it allows for the straightforward definition of BBO as well as GBO fitness functions within Python, which are called from the C++ optimization code for each required (partial) evaluation. We describe the structure of the GOMEA library and how it can be used, and we show its performance in both GBO and Black-Box Optimization (BBO).
A new seismic diagnostics of stellar activity cycles
Creators: name: Vasilyev, Valeriy
Publisher: name: Zenodo
Year: 2021

description: Magnetic activity affects the observed properties of solar p modes:
 mode frequencies and linewidths increase with solar activity. Using VIRGO/SPM
 data from solar cycles 23 and 24 we show that solar-cycle variations are
 measurable in the temporal autocorrelation function of the p modes. Following
 a method developed for local helioseismology, we measure the p-mode travel
 times for multiple skips and propose to average these to enhance the
 signal-to-noise ratio. This method is robust to noise, simpler to implement
 than peak bagging in the frequency domain, and promising for asteroseismology
 applications. We estimate that the activity cycles of Sun-like stars may be
 detectable in long photometric time series.
GALEX far-UV color selection of UV-bright high-redshift quasars
Creators: name: Worseck, Gábor
name: Prochaska, J. Xavier
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We study the small population of z>2.7 quasars detected by GALEX, whose far-UV emission is not extinguished by intervening HI Lyman limit systems. These quasars are of particular importance to detect intergalactic HeII absorption along their sightlines. We correlate verified z>2.7 quasars to the GALEX GR4 source catalog, yielding 304 S/N>3 sources. However, ~50% of these are only detected in the GALEX NUV band, signaling the truncation of the FUV flux by low-redshift Lyman limit systems. We exploit the GALEX UV color to cull the most promising targets for follow-up studies, with blue (red) GALEX colors indicating transparent (opaque) sightlines. Monte Carlo simulations indicate a HeII detection rate of ~60% for quasars with FUV-NUV<1 at z<3.5, a ~50% increase over GALEX searches that do not include color information. We regard 52 quasars detected at S/N>3 to be most promising for HST follow-up, with an additional 114 quasars if we consider S/N>2 detections in the FUV. SDSS provides just half of the NUV-bright quasars that should have been detected by SDSS & GALEX. We revise the SDSS quasar selection function, finding that SDSS systematically misses quasars with blue u-g<2 colors at 3
description: 22 pages, 17 figures, accepted for publication in ApJ. Figure 1 replaced and Section 2 expanded, Tables 3 and 4 included, conclusions unchanged
Eigenmodes of magnetic skyrmion lattices
Creators: name: Desplat, Louise
name: Dupé, Bertrand
Publisher: name: arXiv
Year: 2023
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We explore the interplay between topology and eigenmodes by changing the stabilizing mechanism of skyrmion lattices (skX). We focus on two prototypical ultrathin films hosting an hexagonal (Pd/Fe/Ir(111)) and a square (Fe/Ir(111)) skyrmion lattice, which can both be described by an extended Heisenberg Hamiltonian. We first examine whether the Dzyaloshinkskii-Moriya, or the exchange interaction as the leading energy term affects the modes of the hexagonal skX of Pd/Fe/Ir(111). In all cases, we find that the lowest frequency modes correspond to internal degrees of freedom of individual skyrmions, and suggest a classification based on azimuthal and radial numbers $(l,p)$, with up to $l=6$, and $p=2$. We also show that the gyration behavior induced by an in-plane field corresponds to the excitation of $l=1$ deformation modes with varying radial numbers. Second, we examine the square lattice of skyrmions of Fe/Ir(111). Its stabilization mechanism is dominated by the 4-spin interaction. After relaxation, the unit cell does not carry a topological charge, and the eigenmodes do not correspond to internal skyrmion deformations. By reducing the 4-spin interaction, the integer topological charge is recovered, but the charge carriers do not possess internal degrees of freedom, nor are they separated by energy barriers. We conclude that a 4-spin dominated Hamiltonian does not yield skyrmion lattice solutions, and that therefore, a nontrivial topology does not imply the existence of skyrmions.
description: 13 pages, 6 figures
CARMENES and the Frontiers of High-Resolution Spectroscopy for M dwarfs
Creators: name: Shan, Yutong
name: Reiners, Ansgar
name: Amado, Pedro J.
name: Béjar, Victor J. S.
name: Caballero, Jose A.
name: Cifuentes, Carlos
name: Cortés-Contreras, Miriam
name: Jeffers, Sandra V.
name: Marfil, Emilio
name: Montes, David
name: Nagel, Evangelos
name: Passegger, Vera M.
name: Quirrenbach, Andreas
name: Ribas, Ignasi
name: Schweitzer, Andreas
name: Tabernero, Hugo M.
name: Zechmeister, Mathias
name: CARMENES Consortium
Publisher: name: Zenodo
Year: 2021

description: Comprehensive understanding of planets is predicated on detailed descriptions of their parent stars. M dwarfs are prolific hosts of planetary systems and form an important sample for the PLATO mission. The prospect for characterizing M dwarfs to a level comparable with Sun-like stars is bright, thanks to recent improvements in atmosphere models and the growing availability of high-resolution spectroscopic data. The CARMENES survey has produced high-quality, R~90,000, multi-epoch spectra in the optical and NIR for hundreds of nearby early- to late-M dwarfs. These spectra have been accurately telluric-corrected and co-added to very high signal-to-noise, making them suitable for identifying and modeling fine features intrinsic to the star. The wavelength coverage (520 — 1710 nm) of the CARMENES spectrograph is one of the widest in the industry and contains a large variety of lines and features. Their resolved profiles are sensitive to temperature, metallicity, elemental abundances, and exhibit useful quantum effects. We give examples of recent applications using CARMENES spectra to measure fundamental stellar parameters and chemical compositions of M dwarf photospheres. We summarize how lessons from CARMENES spectroscopy of cool dwarfs could inform target selection and characterization efforts from ground-based facilities for PLATO. (Contributed talk to PLATO mission conference, Oct 2021)
BARQAROR IJTIMOIY-SIYOSIY RIVOJLANISHNI KONSEPTUALLASHTIRISH VA TAHLIL QILISH USLUBLARI
Creators: name: Nasirova, Nilufar
Publisher: name: Zenodo
Year: 2025

description: Mazkur maqolada barqaror ijtimoiy-siyosiy rivojlanish tushunchasi va uni tushuntiruvchi asosiy nazariy yondashuvlar ilmiy tahlil qilinadi. Shuningdek, siyosiy barqarorlikni baholashda qo‘llaniladigan asosiy uslublar, indikatorlar va ularning afzallik hamda cheklovlari ko‘rib chiqiladi. Mamlakatlarning siyosiy tizimlari o‘rtasida mavjud farqlarni hisobga olgan holda, barqarorlikni o‘lchashda kontekstual yondashuvning ahamiyati alohida ta’kidlanadi.
The Jarzynski Identity and the AdS/CFT Duality
Creators: name: Minic, Djordje
name: Pleimling, Michel
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We point out a remarkable analogy between the Jarzynski identity from non-equilibrium statistical physics and the AdS/CFT duality. We apply the logic that leads to the Jarzynski identity to renormalization group (RG) flows of quantum field theories and then argue for the natural connection with the AdS/CFT duality formula. This application can be in principle checked in Monte Carlo simulations of RG flows. Given the existing generalizations of the Jarzynski identity in non-equilibrium statistical physics, and the analogy between the Jarzynski identity and the AdS/CFT duality, we are led to suggest natural but novel generalizations of the AdS/CFT dictionary.
description: version to appear in Physics Letters B
The Massive Pulsar PSR J1614-2230: Linking Quantum Chromodynamics, Gamma-ray Bursts, and Gravitational Wave Astronomy
Creators: name: Ozel, Feryal
name: Psaltis, Dimitrios
name: Ransom, Scott
name: Demorest, Paul
name: Alford, Mark
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The recent measurement of the Shapiro delay in the radio pulsar PSR J1614-2230 yielded a mass of 1.97 +/- 0.04 M_sun, making it the most massive pulsar known to date. Its mass is high enough that, even without an accompanying measurement of the stellar radius, it has a strong impact on our understanding of nuclear matter, gamma-ray bursts, and the generation of gravitational waves from coalescing neutron stars. This single high mass value indicates that a transition to quark matter in neutron-star cores can occur at densities comparable to the nuclear saturation density only if the quarks are strongly interacting and are color superconducting. We further show that a high maximum neutron-star mass is required if short duration gamma-ray bursts are powered by coalescing neutron stars and, therefore, this mechanism becomes viable in the light of the recent measurement. Finally, we argue that the low-frequency (<= 500 Hz) gravitational waves emitted during the final stages of neutron-star coalescence encode the properties of the equation of state because neutron stars consistent with this measurement cannot be centrally condensed. This will facilitate the measurement of the neutron star equation of state with Advanced LIGO/Virgo.
description: Accepted for publication in ApJL
Causal machine learning to optimize treatment decisions for patients with endometrial cancer
Creators: name: Johal, Parveen
Publisher: name: University of British Columbia
Year: 2025

description: Background: In endometrial cancer (EC), histopathological parameters, often unreliably assessed from diagnostic sampling, are used to guide surgical decisions. Surgical decisions, like lymph node (LN) assessment, have implications for post-operative adjuvant therapy decisions, which often vary based on nodal status. The Proactive Molecular Risk Classifier for Endometrial Cancer (ProMisE) subtypes are prognostically distinct, can be assigned on biopsy and have demonstrated exceptional reproducibility. Thus, they may be better suited to guide decision-making pre- and post-hysterectomy. As per the current literature, it is not yet well understood how ProMisE can impact decision-making. Objectives: This thesis explores ProMisE in the context of other pre-operative prognostic features that may influence nodal assessment and adjuvant therapy decision-making, measures the concordance of histopathological and molecular features available pre- and post-operatively, explores how ProMisE subtypes could tailor nodal assessment decisions to minimize the variability in adjuvant therapy decisions, and finally, proposes a model for a dynamic treatment regime (DTR) that simultaneously optimizes pre- and post-operative decision-making in EC. Methods: EC patients who underwent surgery, and have a ProMisE subtype assigned, were identified from two institutions. The dataset was generated using retrospective data from previous studies with additional pre-operative parameters collected via chart reviews. Univariate associations among ProMisE, treatment decisions and prognostic factors were measured. Multivariate analyses were used to assess association of survival with LN testing within ProMisE subgroups. A DTR optimizing nodal assessment and adjuvant therapy was estimated using all the parameters available at the time of each decision. To account for the confounders and mediators in our observational data, a counterfactual framework and dynamic weighted survival modelling was used. Results: 903 patients were included. Pre-operative histopathology, age, body mass index and co-morbidities are associated with ProMisE and nodal assessment. ProMisE assigned pre- and post-operatively demonstrates better concordance than histopathology assigned pre- and post-operatively or at surgery and after expert review. Nodal assessment is significantly associated with longer survival in p53abn ECs, but not in POLEmut or MMRd/NSMP. The methods and data used in the identification of the optimal DTR are insufficient due to the high rate of censoring for an accelerated failure time model.
Laws that Govern Joint Cognitve Systems at Work
Creators: name: Woods, David D.
Publisher: name: Zenodo
Year: 2006
Subjects: Joint Cognitive Systems, Autonomy, Human-Autonomy Teams, AI Ethics, Cognitive Systems Engineering, Resilience Engineering

description: Work in Cognitive Systems Engineering (CSE) has abstracted basic patterns or regularities that recur in many specific settings but that transcend the details of that setting. These general patterns help focus new studies of Joint Cognitive Systems, help jump start design, and help avoid repeating past design failures. The laws form five families: Laws of Adaptation; Laws of Models; Laws of Collaboration; Laws of Responsibility; and Norbert's Contrast. Since these were developed in early 00s, many developments in Autonomous systems, AI, Ethical AI violate or misrepresnt these laws, and, as a result continue to repeat previous design mistakes. Since these Laws were collected, advances in Resilience Engineering have identified the hard constraints and formal principles that lead to these empirical laws.
description: For more on the Laws see the book Joint Cognitive Systems: Patterns in Cognitive Systems Engineering, 2006.
From Brownian-time Brownian sheet to a fourth order and a Kuramoto-Sivashinsky-variant interacting PDEs systems
Creators: name: Allouba, Hassan
Publisher: name: arXiv
Year: 2010
Subjects: subject: Probability (math.PR)
subject: Mathematical Physics (math-ph)
subject: Analysis of PDEs (math.AP)
subject: Complex Variables (math.CV)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 35C15, 35G31, 35G46, 60H30, 60G60, 60J45, 60J35 (Primary) 60J60, 60J65 (Secondary)

description: We introduce $n$-parameter $\Rd$-valued Brownian-time Brownian sheet (BTBS): a Brownian sheet where each "time" parameter is replaced with the modulus of an independent Brownian motion. We then connect BTBS to a new system of $n$ linear, fourth order, and interacting PDEs and to a corresponding fourth order interacting nonlinear PDE. The coupling phenomenon is a result of the interaction between the Brownian sheet, through its variance, and the Brownian motions in the BTBS; and it leads to an intricate, intriguing, and random field generalization of our earlier Brownian-time-processes (BTPs) connection to fourth order linear PDEs. Our BTBS does not belong to the classical theory of random fields; and to prove our new PDEs connections, we generalize our BTP approach in \cite{Abtp1,Abtp2} and we mix it with the Brownian sheet connection to a linear PDE system, which we also give along with its corresponding nonlinear second order PDE and $2n$-th order linear PDE. In addition, we introduce the $n$-parameter $d$-dimensional linear Kuramoto-Sivashinsky (KS) sheet kernel (or "transition density"); and we link it to an intimately connected system of new linear Kuramoto-Sivashinsky-variant interacting PDEs, generalizing our earlier one parameter imaginary-Brownian-time-Brownian-angle kernel and its connection to the KS PDE. The interactions here mean that our PDEs systems are to be solved for a family of functions, a feature shared with well known fluids dynamics models. The interacting PDEs connections established here open up another new fundamental front in the rapidly growing field of iterated-type processes and their connections to both new and important higher order PDEs and to some equivalent fractional Cauchy problems. We connect the BTBS fourth order interacting PDEs system given here with an interacting fractional PDE system and further study it in another article.
description: 19 pages. Minor edit of the title, abstract, and introduction. Added introductory remarks. Minor typos corrected. To Appear in Stochastic Analysis and Applications
The NLO QCD Corrections to $B_c$ Meson Production in $Z^0$ Decays
Creators: name: Qiao, Cong-Feng
name: Sun, Li-Ping
name: Zhu, Rui-Lin
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The decay width of $Z^0$ to $B_c$ meson is evaluated at the next-to-leading order(NLO) accuracy in strong interaction. Numerical calculation shows that the NLO correction to this process is remarkable. The quantum chromodynamics(QCD)renormalization scale dependence of the results is obviously depressed, and hence the uncertainties lying in the leading order calculation are reduced.
description: 14 pages, 7 figures; references added; expressions and typos ammended
Doctoral thesis recital (collaborative piano)
Creators: name: Kim, Kihwa
Publisher: name: The University of Texas at Austin
Year: 2019
Subjects: Song cycles
Songs (Medium voice) with piano

description: Schwanengesang : D 957 : seven lieder after poems by Ludwig Rellstab / Franz Schubert (with David Small, baritone) -- I was there : op. 49 : five poems of Walt Whitman / Lee Hoiby (with David Small, baritone)
N=4, 3D Supersymmetric Quantum Mechanics in Non-Abelian Monopole Background
Creators: name: Ivanov, Evgeny
name: Konyushikhin, Maxim
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Using the harmonic superspace approach, we construct the three-dimensional N=4 supersymmetric quantum mechanics of the supermultiplet (3,4,1) coupled to an external SU(2) gauge field. The off-shell N=4 supersymmetry requires the gauge field to be a static form of the 't Hooft ansatz for the 4D self-dual SU(2) gauge fields, that is a particular solution of Bogomolny equations for BPS monopoles. We present the explicit form of the corresponding superfield and component actions, as well as of the quantum Hamiltonian and N=4 supercharges. The latter can be used to describe a more general N=4 mechanics system, with an arbitrary BPS monopole background and on-shell N=4 supersymmetry. The essential feature of our construction is the use of semi-dynamical spin (4,4,0) multiplet with the Wess-Zumino type action.
description: 16 pages, reference added, published version
title: ÐÑÐ½Ð¾Ð²Ð½ÑÐµ ÑÐ¾ÑÐ¼Ñ Ð³Ð¾ÑÑÐ´Ð°ÑÑÑÐ²ÐµÐ½Ð½Ð¾Ð³Ð¾ ÑÑÑÑÐ¾Ð¹ÑÑÐ²Ð° ÑÐ¾Ð²ÑÐµÐ¼ÐµÐ½Ð½Ð¾ÑÑÐ¸
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ°
titleType: Subtitle
title: The main forms of modern government
Creators: name: Ð¦ÑÐ³Ð°Ð½ÐºÐ¾, ÐÐ²Ð³ÐµÐ½Ð¸Ñ
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2019
Subjects: Ð¾ÑÐ½Ð¾Ð²Ð½ÑÐµ ÑÐ¾ÑÐ¼Ñ Ð³Ð¾ÑÑÐ´Ð°ÑÑÑÐ²ÐµÐ½Ð½Ð¾Ð³Ð¾ ÑÑÑÑÐ¾Ð¹ÑÑÐ²Ð°
ÑÐ¾ÑÐ¼Ð° Ð³Ð¾ÑÑÐ´Ð°ÑÑÑÐ²Ð°
ÑÐ½Ð¸ÑÐ°ÑÐ½Ð¾Ðµ Ð³Ð¾ÑÑÐ´Ð°ÑÑÑÐ²Ð¾
ÑÐµÐ´ÐµÑÐ°ÑÐ¸Ð²Ð½Ð¾Ðµ Ð³Ð¾ÑÑÐ´Ð°ÑÑÑÐ²Ð¾
ÐºÐ¾Ð½ÑÐµÐ´ÐµÑÐ°ÑÐ¸Ñ
Ð³Ð¾ÑÑÐ´Ð°ÑÑÑÐ²Ð¾
basic forms of state structure
form of state
unitary state
federation
confederation
state

description: Ð Ð´Ð°Ð½Ð½Ð¾Ð¹ ÑÐ°Ð±Ð¾ÑÐµ Ð¸Ð·Ð»Ð¾Ð¶ÐµÐ½Ð° ÑÑÑÐ½Ð¾ÑÑÑ Ð¾ÑÐ½Ð¾Ð²Ð½ÑÑ ÑÐ¾ÑÐ¼ Ð³Ð¾ÑÑÐ´Ð°ÑÑÑÐ²ÐµÐ½Ð½Ð¾Ð³Ð¾ ÑÑÑÑÐ¾Ð¹ÑÑÐ²Ð° ÑÐ¾Ð²ÑÐµÐ¼ÐµÐ½Ð½Ð¾ÑÑÐ¸. ÐÐ°Ð½Ñ Ð¾Ð±ÑÐ¸Ðµ Ð¿Ð¾Ð½ÑÑÐ¸Ñ Ð¸ Ð¿ÑÐ¾Ð°Ð½Ð°Ð»Ð¸Ð·Ð¸ÑÐ¾Ð²Ð°Ð½Ð° ÐºÐ»Ð°ÑÑÐ¸ÑÐ¸ÐºÐ°ÑÐ¸Ñ Ð¾ÑÐ½Ð¾Ð²Ð½ÑÑ ÑÐ¾ÑÐ¼ Ð³Ð¾ÑÑÐ´Ð°ÑÑÑÐ²ÐµÐ½Ð½Ð¾Ð³Ð¾ ÑÑÑÑÐ¾Ð¹ÑÑÐ²Ð° ÑÐ¾Ð²ÑÐµÐ¼ÐµÐ½Ð½Ð¾ÑÑÐ¸. ÐÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ñ Ð¿ÑÐ°Ð²Ð¾Ð²ÑÐµ Ð¾ÑÐ¾Ð±ÐµÐ½Ð½Ð¾ÑÑÐ¸ ÑÐ½Ð¸ÑÐ°ÑÐ½Ð¾Ð³Ð¾ Ð³Ð¾ÑÑÐ´Ð°ÑÑÑÐ²Ð°, ÑÐµÐ´ÐµÑÐ°ÑÐ¸Ð²Ð½Ð¾Ð³Ð¾ Ð³Ð¾ÑÑÐ´Ð°ÑÑÑÐ²Ð° Ð¸ ÐºÐ¾Ð½ÑÐµÐ´ÐµÑÐ°ÑÐ¸Ð¸. Ð¡ÐµÐ³Ð¾Ð´Ð½Ñ Ð°ÐºÑÑÐ°Ð»ÑÐ½Ð¾ÑÑÑ ÑÐµÐ¼Ñ Ð²ÑÐ¿ÑÑÐºÐ½Ð¾Ð¹ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð¾Ð¹ ÑÐ°Ð±Ð¾ÑÑ Ð·Ð°ÐºÐ»ÑÑÐ°ÐµÑÑÑ Ð² Ð¾ÑÑÑÑÑÑÐ²Ð¸Ð¸ Ð¾Ð±ÑÐµÐºÑÐ¸Ð²Ð½Ð¾ Ð¸Ð´ÐµÐ°Ð»ÑÐ½Ð¾Ð¹ ÑÐ¾ÑÐ¼Ñ Ð³Ð¾ÑÑÐ´Ð°ÑÑÑÐ²ÐµÐ½Ð½Ð¾Ð³Ð¾ ÑÑÑÑÐ¾Ð¹ÑÑÐ²Ð°, Ð¿Ð¾ÑÐºÐ¾Ð»ÑÐºÑ Ð² ÑÐ¾Ð¼ Ð³Ð¾ÑÑÐ´Ð°ÑÑÑÐ²Ðµ, Ð³Ð´Ðµ Ð¾Ð½Ð° Ð±ÑÐ´ÐµÑ Ð´ÐµÐ¹ÑÑÐ²Ð¸ÑÐµÐ»ÑÐ½Ð¾ ÑÑÑÐµÐºÑÐ¸Ð²Ð½Ð°, Ð² Ð´ÑÑÐ³Ð¾Ð¼ Ð¾Ð½Ð° Ð½Ðµ ÑÐ¼Ð¾Ð¶ÐµÑ Ð¿ÑÐ¾ÑÐ²Ð¸ÑÑ ÑÐ²Ð¾Ð¸ Ð»ÑÑÑÐ¸Ðµ ÐºÐ°ÑÐµÑÑÐ²Ð° Ð² ÑÐ¸Ð»Ñ Ð¸Ð½Ð´Ð¸Ð²Ð¸Ð´ÑÐ°Ð»ÑÐ½Ð¾ÑÑÐ¸ Ð¾ÑÐ³Ð°Ð½Ð¸Ð·Ð°ÑÐ¸Ð¸ ÐºÐ°Ð¶Ð´Ð¾Ð³Ð¾ Ð³Ð¾ÑÑÐ´Ð°ÑÑÑÐ²Ð°.
description: In the given work the essence of the main forms of modern state structure. Given the general concepts and analyzed the classification of the main forms of modern state structure. The investigated legal features of the unitary state, federative state and confederation. Today the relevance of the topic of final qualifying work is the absence of an objectively ideal form of state structure, because in the state where it will be really effective, in another it will not be able to show its best qualities due to the individuality of the organization of each state.
A new exponential separation between quantum and classical one-way communication complexity
Creators: name: Montanaro, Ashley
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Physics (quant-ph)
subject: Computational Complexity (cs.CC)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: We present a new example of a partial boolean function whose one-way quantum communication complexity is exponentially lower than its one-way classical communication complexity. The problem is a natural generalisation of the previously studied Subgroup Membership problem: Alice receives a bit string x, Bob receives a permutation matrix M, and their task is to determine whether Mx=x or Mx is far from x. The proof uses Fourier analysis and an inequality of Kahn, Kalai and Linial.
description: 19 pages; v3: improved results and some bug fixes
Period Change Similarities among the RR Lyrae Variables in Oosterhoff I and Oosterhoff II Globular Systems
Creators: name: Kunder, Andrea
name: Walker, Alistair
name: Stetson, Peter B.
name: Bono, Giuseppe
name: Nemec, James M.
name: de Propris, Roberto
name: Monelli, Matteo
name: Cassisi, Santi
name: Andreuzzi, Gloria
name: Dall'Ora, Massimo
name: Di Cecco, Alessandra
name: Zoccali, Manuela
Publisher: name: arXiv
Year: 2010
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present period change rates (dP/dt) for 42 RR Lyrae variables in the globular cluster IC$\,$4499. Despite clear evidence of these period increases or decreases, the observed period change rates are an order of magnitude larger than predicted from theoretical models of this cluster. We find there is a preference for increasing periods, a phenomenon observed in most RR Lyrae stars in Milky Way globular clusters. The period-change rates as a function of position in the period-amplitude plane are used to examine possible evolutionary effects in OoI clusters, OoII clusters, field RR Lyrae stars and the mixed-population cluster $ω$~ Centauri. It is found that there is no correlation between the period change rate and the typical definition of Oosterhoff groups. If the RR Lyrae period changes correspond with evolutionary effects, this would be in contrast to the hypothesis that RR Lyrae variables in OoII systems are evolved HB stars that spent their ZAHB phase on the blue side of the instability strip. This may suggest that age may not be the primary explanation for the Oosterhoff types.
description: accepted to AJ
Lorentz violation induced vacuum birefringence and its astrophysical consequences
Creators: name: Shao, Lijing
name: Ma, Bo-Qiang
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In the electromagnetism of loop quantum gravity, two helicities of a photon have different phase velocities and group velocities, termed as "vacuum birefringence". Two novel phenomenons, "peak doubling" and "de-polarization", are expected to appear for a linearly polarized light from astrophysical sources. We show that the criteria to observe these two phenomenons are the same. Further, from recently observed $γ$-ray polarization from Cygnus X-1, we obtain an upper limit $\sim 8.7\times10^{-12}$ for Lorentz-violating parameter $χ$, which is the most firm constraint from well-known systems. We also suggest to analyze possible existence of "peak doubling" through Fermi LAT GRBs.
description: 4 latex pages, 2 figures, short version for publication in PRD. For a detailed long version, please look at the first version of this arXiv paperarXiv:1104.4438v1
Phenomenology of Discrete Flavour Symmetries
Creators: name: Merlo, Luca
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The flavour puzzle is an open problem both in the Standard Model and in its possible supersymmetric or grand unified extensions. In this thesis, we discuss possible explanations of the origin of fermion mass hierarchies and mixings by the use of non-Abelian discrete flavour symmetries. We present a T'- and an S4-based realisations in which the spontaneous breaking of the symmetry produces realistic fermion mass hierarchies, the quark mixing matrix comparable to the Wolfenstein parametrisation and the lepton mixing matrix close to the so-called tribimaximal pattern. We also present an alternative S4-based flavour model which naturally leads to the weak complementarity relation with a relatively large lepton reactor angle. Masses and mixings are evaluated at a very high energy scale and for a comparison with experimental measurements we illustrate a general analysis on the stability under the renormalisation group running to evolve these observables to low energies. We consider also the constraints on flavour violating processes arising from introducing a flavour symmetry: in particular we concentrate on the lepton sector, analysing some lepton flavour violating decays and the discrepancy between the theoretical prediction and the experimental measurement of the anomalous magnetic moment of the muon. Interesting hints for the scale of New Physics and for the forthcoming experimental results from LHC are found. Finally we discuss the impact of an underlining flavour symmetry on leptogenesis in order to explain the baryon asymmetry of the universe.
description: Doctoral thesis, 205 pages; Winner of the "Sergio Fubini" prize for the year 2010, lavished by the INFN - Istituto Nazionale di Fisica Nucleare
Potential barrier of Graphene edges
Creators: name: Wang, Weiliang
name: Li, Zhibing
Publisher: name: arXiv
Year: 2011
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We calculated row resolved density of states, charge distribution and work function of graphene's zigzag and armchair edge (either clean or terminated alternatively with H, O or OH group). The zigzag edge saturated via OH group has the lowest work function of 3.76 eV, while the zigzag edge terminated via O has the highest work function of 7.74 eV. The angle-dependent potential barrier on the edge is fitted to a multi-pole model and is explained by the charge distribution.
description: 16 pages, 8 figures. Copyright (2011) American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. This article appeared in (J. Appl. Phys. 109 (2011) 114308) and may be found at (http://link.aip.org/link/?JAP/109/114308)
Overcoming lenalidomide resistance in del(5q) myelodysplastic syndrome
Creators: name: Gharaee, Nadia
Publisher: name: University of British Columbia
Year: 2024

description: Deletion of the long arm of chromosome 5 is the most common cytogenetic abnormality in myelodysplastic syndrome (MDS). Lenalidomide (LEN) is the first-line therapy for del(5q) MDS, but half of the patients become resistant within 2-3 years, highlighting the need for new treatment options. LEN binds to the substrate adaptor of CRL4CRBN E3 ubiquitin ligase, Cereblon, which leads to ubiquitination and degradation of CSNK1A1. CSNK1A1 is located on the commonly deleted region (CDR) of del(5q) MDS which makes del(5q) cells sensitive to further degradation of the protein. Formerly, we have shown that LEN resistance is associated with TP53 or RUNX1 loss-of-function mutations. The objective of this study is to attempt to overcome LEN resistance by finding other vulnerabilities in del(5q) MDS. We have previously shown that deficiency of miR-143 and miR-145, located on the CDR, results in myeloid expansion of hematopoietic stem cells. Since the locus of miR-143 and miR-145 differs from CSNK1A1, we hypothesized that dependencies based on miR-143 and miR-145 would be independent of CSNK1A1 haploinsufficiency. Our analysis identified the IGF-1 receptor (IGF-1R) as one of the putative targets of both miR-143 and miR-145. GSEA analysis on a previously published cohort of MDS patients showed that lower expression of miR-143 and miR-145 is associated with activation of the IGF-1 pathway. We hypothesize that the IGF-1R pathway is a potential target for LEN-resistant del(5q) MDS. We have confirmed the interaction of both miR-143 and miR-145 with IGF-1R mRNA using luciferase assays and RNA pulldown assays. Moreover, we have shown that inhibition of IGF-1R using BMS-536924 decreases cell viability of LEN-resistant del(5q) MDS-L cells (knocked out for either TP53 or RUNX1). Further, we evaluated the dependency of LEN-resistant del(5q) MDS-L cells on pathways regulating or regulated by IGF-1R including Abl signaling pathway and pathways downstream of IGF-1R. We have shown that the Abl and MAPK pathways are activated with low expression of miR-143 and miR-145. Furthermore, we demonstrated the efficacy of imatinib (Abl inhibitor) and trametinib (MEK1/2 inhibitor) in decreasing the viability of the LEN-resistant del(5q) MDS-L cell line. Thus, this work revealed novel targetable dependencies in LEN-resistant del(5q) MDS.
$C^{\infty} $ spectral rigidity of the ellipse
Creators: name: Hezari, Hamid
name: Zelditch, Steve
Publisher: name: arXiv
Year: 2010
Subjects: subject: Spectral Theory (math.SP)
subject: FOS: Mathematics

description: We prove that ellipses are infinitesimally spectrally rigid among $C^{\infty}$ domains with the symmetries of the ellipse.
description: This is a major revision which gives full details on the Hadamard variation of the wave trace on a domain with boundary
On enumeration and entropy of ribbon tilings
Creators: name: Chen, Yinsong
name: Kargin, Vladislav
Publisher: name: arXiv
Year: 2023
Subjects: subject: Probability (math.PR)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 52C20, 05B50, 60C05

description: The paper considers ribbon tilings of large regions and their per-tile entropy (the logarithm of the number of tilings divided by the number of tiles). For tilings of general regions by ribbon tiles of length $n$, we give an upper bound on the per-tile entropy as $n - 1$. For growing rectangular regions, we prove the existence of the asymptotic per-tile entropy and show that it is bounded from below by $\log_2 (n/e)$ and from above by $\log_2(en)$. For growing generalized "Aztec Diamond'' regions and for growing "stair'' regions, the asymptotic per-tile entropy is calculated exactly as $1/2$ and $\log_2(n + 1) - 1$, respectively.
description: 20 pages, 12 figures
Galaxy Clusters as a probe of early dark energy
Creators: name: Alam, Ujjaini
name: Lukić, Zarija
name: Bhattacharya, Suman
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We study a class of early dark energy (EDE) models, in which, unlike in standard dark energy models, a substantial amount of dark energy exists in the matter-dominated era. We self-consistently include dark energy perturbations, and show that these models may be successfully constrained using future observations of galaxy clusters, in particular the redshift abundance, and the Sunyaev-Zel'dovich (SZ) power spectrum. We make predictions for EDE models, as well as LCDM for incoming X-ray (eROSITA) and microwave (South Pole Telescope) observations. We show that galaxy clusters' mass function and the SZ power spectrum will put strong constraints both on the equation of state of \de today and the redshift at which EDE transits to present-day LCDM like behavior for these models, thus providing complementary information to the geometric probes of dark energy. Not including perturbations in EDE models leads to those models being practically indistinguishable from LCDM. An MCMC analysis of future galaxy cluster surveys provides constraints for EDE parameters that are competitive with and complementary to background expansion observations such as supernovae.
description: 9 pages, 8 figures. MCMC likelihood analysis of future galaxy cluster surveys providing constraints on EDE parameters added. Version accepted for publication in Astrophysical Journal
Universal parity effects in the entanglement entropy of XX chains with open boundary conditions
Creators: name: Fagotti, Maurizio
name: Calabrese, Pasquale
Publisher: name: arXiv
Year: 2010
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We consider the Renyi entanglement entropies in the one-dimensional XX spin-chains with open boundary conditions in the presence of a magnetic field. In the case of a semi-infinite system and a block starting from the boundary, we derive rigorously the asymptotic behavior for large block sizes on the basis of a recent mathematical theorem for the determinant of Toeplitz plus Hankel matrices. We conjecture a generalized Fisher-Hartwig form for the corrections to the asymptotic behavior of this determinant that allows the exact characterization of the corrections to the scaling at order o(1/l) for any n. By combining these results with conformal field theory arguments, we derive exact expressions also in finite chains with open boundary conditions and in the case when the block is detached from the boundary.
description: 24 pages, 9 figures
The Exact Electron Propagator in a Magnetic Field as the Sum over Landau Levels on a Basis of the Dirac Equation Exact Solutions
Creators: name: Kuznetsov, A. V.
name: Okrugin, A. A.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The exact propagator for an electron in a constant uniform magnetic field as the sum over Landau levels is obtained by the direct derivation by standard methods of quantum field theory from exact solutions of the Dirac equation in the magnetic field. The result can be useful for further development of the calculation technique of quantum processes in an external active medium, particularly in the conditions of moderately large field strengths when it is insufficient to take into account only the ground Landau level contribution.
description: 9 pages, LaTeX; v2: 3 misprints corrected, a note and 1 reference added; to appear in Int. J. Mod. Phys. A
On the second cohomology of nilpotent orbits in exceptional Lie algebras
Creators: name: Chatterjee, Pralay
name: Maity, Chandan
Publisher: name: arXiv
Year: 2016
Subjects: subject: Group Theory (math.GR)
subject: Algebraic Topology (math.AT)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 57T15, 17B08

description: In this paper we consider non-compact non-complex exceptional Lie algebras, and compute the dimensions of the second cohomology groups for most of the nilpotent orbits. For the rest of cases of nilpotent orbits, which are not covered in the above computations, we obtain upper bounds for the dimensions of the second cohomology groups.
description: 10 pages
How close is the sample covariance matrix to the actual covariance matrix?
Creators: name: Vershynin, Roman
Publisher: name: arXiv
Year: 2010
Subjects: subject: Probability (math.PR)
subject: Functional Analysis (math.FA)
subject: Statistics Theory (math.ST)
subject: FOS: Mathematics
subject: 60H12, 60B20, 46B09

description: Given a probability distribution in R^n with general (non-white) covariance, a classical estimator of the covariance matrix is the sample covariance matrix obtained from a sample of N independent points. What is the optimal sample size N = N(n) that guarantees estimation with a fixed accuracy in the operator norm? Suppose the distribution is supported in a centered Euclidean ball of radius \sqrt{n}. We conjecture that the optimal sample size is N = O(n) for all distributions with finite fourth moment, and we prove this up to an iterated logarithmic factor. This problem is motivated by the optimal theorem of Rudelson which states that N = O(n \log n) for distributions with finite second moment, and a recent result of Adamczak, Litvak, Pajor and Tomczak-Jaegermann which guarantees that N = O(n) for sub-exponential distributions.
description: 34 pages. Typos and minor inaccuracies corrected, references updated
Crystallographic advancements in the study of junctophilin proteins
Creators: name: Yang, Zheng Fang
Publisher: name: University of British Columbia
Year: 2023

description: Heartbeats and locomotion require muscle contraction, which is governed by the transport of calcium ions across membrane compartments within cells. Excitation-contraction coupling (ECC) is an essential process that connects extracellular signals to intracellular ion channels. Cells from excitable tissue have specialized ultrastructure in the form of transverse (T) tubules, where the plasma membrane comes into proximity with the sarcoplasmic reticulum (SR), an intracellular calcium reservoir. Voltage-gated calcium channels (CaV) in the plasma membrane and ryanodine receptors (RyR) in the SR membrane coordinate calcium release during ECC. Auxiliary proteins regulate and maintain the channels within the junctional membrane complex (JMC), including the junctophilin (JPH) proteins. JPH proteins form a bridge between membranes and have direct interactions with calcium channels; the skeletal isoform JPH1 and the cardiac isoform JPH2 are essential for muscle ECC. Mutations in JPH2 lead to severe diseases including hypertrophic cardiomyopathy (HCM). In this thesis, the goals are to elucidate the structures of JPH proteins using X-ray crystallography, study the interaction between JPH and CaV using a combination of X-ray crystallography and ITC, and study the lipid-binding function of JPH using protein-lipid overlay assays. The structures of JPH1 and JPH2 were determined at resolutions of 1.31 Å and 2.35 Å, respectively. ITC data showed that JPH1/JPH2 binds to the C-terminal domain of skeletal CaV1.1 with an affinity of 1-2 μM, and the structure of JPH2 in complex with the CaV1.1 binding site was determined at a resolution of 2.03 Å. Over 80 variants were mapped onto the JPH2 structure, most of which are HCM-causing mutations, and a subset of mutations target the JPH/CaV interaction site. Co-crystallization and ITC experiments showed no binding between JPH and short-chain phospholipids. Protein-lipid overlay assays demonstrate that high ionic strength disrupts the interaction between JPH and phospholipids, and clusters of positive residues on the surface of JPH affect lipid-binding.
Reconciling a significant hierarchical assembly of massive early-type galaxies at z
Creators: name: Eliche-Moral, M. Carmen
name: Prieto, Mercedes
name: Gallego, Jesus
name: Zamorano, Jaime
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Hierarchical models predict that massive early-type galaxies (mETGs) are the latest systems to be in place into the cosmic scenario (at z
description: 2 pages, 1 figure, Proceedings of Symposium 2 of JENAM 2010, "Environment and the Formation of Galaxies: 30 years later", ed. I. Ferreras and A. Pasquali, Astrophysics & Space Science Proceedings, Springer
Maximal Entanglement of Two-qubit States Constructed by Linearly Independent Coherent States
Creators: name: Najarbashi, G.
name: Maleki, Y.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Physics (quant-ph)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: In this paper, we find the necessary and sufficient condition for the maximal entanglement of the state, $ |ψ>=μ|α>|β>+λ|α>|δ>+ ρ|γ>|β>+ν|γ>|δ>,$ constructed by linearly independent coherent states with \emph{real parameters} when $=$. This is a further generalization of the classified nonorthogonal states discussed in Ref. Physics Letters A {\bf{291}}, 73-76 (2001).
description: some examples added; Int J Theor Phys 2011
Transverse colon through Morgagni foramen
Creators: name: Ceka, Elton
Publisher: name: EURORAD
Year: 2014
Subjects: subject: Thorax
subject: CT
subject: Plain radiographic studies
subject: Diagnostic procedure
subject: Congenital

description: Clinical History Image Findings Discussion Find Diagnosis Differential Diagnosis
description: female, 8 years
description: Clinical History: An 8-year old female presented to the hospital because of a light cough when she lay down. No other complains were presented by the girl and her mother. The pediatrician found bronchial rales during auscultation in base of the right side of her chest, so ... Final Diagnosis: Transverse colon herniated through Morgagni foramen
Clustering Constraints on the Relative Sizes of Central and Satellite Galaxies
Creators: name: Hearin, Andrew
name: Behroozi, Peter
name: Kravtsov, Andrey
name: Moster, Benjamin
Publisher: name: arXiv
Year: 2017
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We empirically constrain how galaxy size relates to halo virial radius using new measurements of the size- and stellar mass-dependent clustering of galaxies in the Sloan Digital Sky Survey. We find that small galaxies cluster much more strongly than large galaxies of the same stellar mass. The magnitude of this clustering difference increases on small scales, and decreases with increasing stellar mass. Using Halotools to forward model the observations, we test an empirical model in which present-day galaxy size is proportional to the size of the virial radius at the time the halo reached its maximum mass. This simple model reproduces the observed size-dependence of galaxy clustering in striking detail. The success of this model provides strong support for the conclusion that satellite galaxies have smaller sizes relative to central galaxies of the same halo mass. Our findings indicate that satellite size is set prior to the time of infall, and that a remarkably simple, linear size--virial radius relation emerges from the complex physics regulating galaxy size. We make quantitative predictions for future measurements of galaxy-galaxy lensing, including dependence upon size, scale, and stellar mass, and provide a scaling relation of the ratio of mean sizes of satellites and central galaxies as a function of their halo mass that can be used to calibrate hydrodynamical simulations and semi-analytic models.
description: 12 pages plus an appendix. Submitted to MNRAS. Figure 5 shows that a simple empirical model, with R50 = 0.01Rvir, can accurately reproduce new measurements of size-dependent clustering of SDSS galaxies. Figure 9 shows predictions for the size-dependence of future lensing measurements. Figure 10 provides a diagnostic for hydro sims and SAMs