cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Routing Heterogeneous Traffic in Delay-Tolerant Satellite Networks
Creators: name: Madoery, Pablo G.
name: Kurt, Gunes Karabulut
name: Yanikomeroglu, Halim
name: Hu, Peng
name: Ahmed, Khaled
name: Martel, Stéphane
name: Lamontagne, Guillaume
Publisher: name: arXiv
Year: 2023
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: Delay-tolerant networking (DTN) offers a novel architecture that can be used to enhance store-carry-forward routing in satellite networks. Since these networks can take advantage of scheduled contact plans, distributed algorithms like the Contact Graph Routing (CGR) can be utilized to optimize data delivery performance. However, despite the numerous improvements made to CGR, there is a lack of proposals to prioritize traffic with distinct quality of service (QoS) requirements. This study presents adaptations to CGR to improve QoS-compliant delivery ratio when transmitting traffic with different latency constraints, along with an integer linear programming optimization model that serves as a performance upper bound. The extensive results obtained by simulating different scenarios show that the proposed algorithms can effectively improve the delivery ratio and energy efficiency while meeting latency constraints.
Evaluation of low-order manifold representation of chemistry in turbulent reactive flows
Creators: name: Mousemi, Arash
Publisher: name: University of British Columbia
Year: 2021

description: The experimental data from the Cambridge-Sandia burner working in nine different configurations are post-processed to explore the effects of coordinate, swirl flow ratio, and stratification factor on the conditionally-averaged reactive scalars. First, the mixture fraction and progress variable are employed to construct a two-dimensional conditional manifold by using all of the data – regardless of the coordinate in the physical domain, swirl ratio, and stratification factor. Moreover, one-point, one-time measurements are utilized to compute the exact joint Probability Density Function (PDF) of the conditioning variables at each point. Having the conditional averages of temperature and mass fractions of reactive scalars in addition to the joint PDF of the conditioning variables, the manifold is applied to calculate the unconditional averages for each of the scalars. The mean values are also obtained by ensemble averaging all the data available for each of the measuring points, and the discrepancies between the values calculated from the two approaches are reported in order to assess the validity of the assumptions underlying the low-dimensional chemistry representations. The results suggest that the two chosen conditioning variables are not sufficient to make the manifold independent of the real domain, so, the normalized total enthalpy is introduced as the third conditioning variable and the process repeated. Results obtained from the three-condition manifold demonstrate that the discrepancies for prediction of the reactive scalars decrease when using the third condition. Moreover, the experimental data are employed to obtain the marginal PDFs for the conditioning variables at various points in the reacting domain. The measurements are then combined from all positions in space to form conditional PDFs of the normalized total enthalpy for various values of the other two variables. The correlation coefficients between the conditioning variables are also investigated. Next, to consider the association between the conditioning variables for modeling, the copula concept is introduced, and the performance of three different copulas are tested. Furthermore, the statistical moments of the conditioning variables are computed from the experimental data at different points and are utilized for modeling the joint PDF of the conditioning variables from two different approaches which are compared.
title: ÐÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ðµ Ð¼ÐµÑÐ¾Ð´Ð¾Ð² ÑÐ¾ÑÐ¼Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ Ð¾Ð¿ÑÐ¸Ð¼Ð°Ð»ÑÐ½Ð¾Ð³Ð¾ Ð¸Ð½Ð²ÐµÑÑÐ¸ÑÐ¸Ð¾Ð½Ð½Ð¾Ð³Ð¾ Ð¿Ð¾ÑÑÑÐµÐ»Ñ
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð¼Ð°Ð³Ð¸ÑÑÑÐ°
titleType: Subtitle
Creators: name: ÐÐ°Ð»Ð°ÐºÐ¾Ð²Ð°, ÐÑ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: ÐÐ¸Ð½ÐµÐ¹Ð½Ð¾Ðµ Ð¿ÑÐ¾Ð³ÑÐ°Ð¼Ð¼Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ
ÐÐ¶Ð°Ð²Ð° (JAVA)
ÐÑÑÐ¸ÑÐ»Ð¸ÑÐµÐ»ÑÐ½ÑÐµ Ð¼Ð°ÑÐ¸Ð½Ñ ÑÐ»ÐµÐºÑÑÐ¾Ð½Ð½ÑÐµ
ÐºÐ°Ð¿Ð¸ÑÐ°Ð»
Ð¾Ð±Ð»Ð¸Ð³Ð°ÑÐ¸Ð¸
Ð¸Ð½Ð²ÐµÑÑÐ¸ÑÐ¸Ð¸

description: Ð Ð´Ð°Ð½Ð½Ð¾Ð¹ ÑÐ°Ð±Ð¾ÑÐµ ÑÐ°ÑÑÐ¼Ð¾ÑÑÐµÐ½Ð¾ ÑÐ¾ÑÐ¼Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ Ð¾Ð¿ÑÐ¸Ð¼Ð°Ð»ÑÐ½Ð¾Ð³Ð¾ Ð¸Ð½Ð²ÐµÑÑÐ¸ÑÐ¸Ð¾Ð½Ð½Ð¾Ð³Ð¾ Ð¿Ð¾ÑÑÑÐµÐ»Ñ Ñ Ð¿Ð¾Ð¼Ð¾ÑÑÑ Ð¼ÐµÑÐ¾Ð´Ð¾Ð² Ð»Ð¸Ð½ÐµÐ¹Ð½Ð¾Ð³Ð¾ Ð¿ÑÐ¾Ð³ÑÐ°Ð¼Ð¼Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ. Ð Ð°ÑÑÐ¼Ð¾ÑÑÐµÐ½Ñ Ð¾ÑÐ½Ð¾Ð²Ð½ÑÐµ Ð¼ÐµÑÐ¾Ð´Ñ ÑÐ¾ÑÐ¼Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ Ð¾Ð¿ÑÐ¸Ð¼Ð°Ð»ÑÐ½Ð¾Ð³Ð¾ Ð¸Ð½Ð²ÐµÑÑÐ¸ÑÐ¸Ð¾Ð½Ð½Ð¾Ð³Ð¾ Ð¿Ð¾ÑÑÑÐµÐ»Ñ. ÐÐ°Ð½Ñ Ð¾Ð±ÑÐ¸Ðµ Ð¿Ð¾Ð½ÑÑÐ¸Ñ Ð·Ð°Ð´Ð°Ñ Ð¿Ð¾ Ð¾Ð¿ÑÐ¸Ð¼Ð¸Ð·Ð°ÑÐ¸Ð¸ Ð¸ Ð·Ð°Ð´Ð°Ñ Ð»Ð¸Ð½ÐµÐ¹Ð½Ð¾Ð³Ð¾ Ð¿ÑÐ¾Ð³ÑÐ°Ð¼Ð¼Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ. ÐÐ¿Ð¸ÑÐ°Ð½Ð° Ð¼Ð°ÑÐµÐ¼Ð°ÑÐ¸ÑÐµÑÐºÐ°Ñ Ð¼Ð¾Ð´ÐµÐ»Ñ ÑÐ¾ÑÐ¼Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ Ð¾Ð¿ÑÐ¸Ð¼Ð°Ð»ÑÐ½Ð¾Ð³Ð¾ Ð¸Ð½Ð²ÐµÑÑÐ¸ÑÐ¸Ð¾Ð½Ð½Ð¾Ð³Ð¾ Ð¿Ð¾ÑÑÑÐµÐ»Ñ. ÐÑÑÑÐµÑÑÐ²Ð»ÐµÐ½Ð° ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ°Ñ ÑÐµÐ°Ð»Ð¸Ð·Ð°ÑÐ¸Ñ Ð¼Ð°ÑÐµÐ¼Ð°ÑÐ¸ÑÐµÑÐºÐ¾Ð¹ Ð¼Ð¾Ð´ÐµÐ»Ð¸ â Ð² Ð²Ð¸Ð´Ðµ Ð¿ÑÐ¾Ð³ÑÐ°Ð¼Ð¼Ñ Ð½Ð° ÑÐ·ÑÐºÐµ Java. ÐÑÐ¾Ð²ÐµÐ´ÐµÐ½Ð¾ ÑÐµÑÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ Ð¿ÑÐ¸Ð»Ð¾Ð¶ÐµÐ½Ð¸Ñ Ð¸ Ð´Ð°Ð½ Ð°Ð½Ð°Ð»Ð¸Ð· Ð¿Ð¾Ð»ÑÑÐµÐ½Ð½ÑÐ¼ ÑÐµÐ·ÑÐ»ÑÑÐ°ÑÐ°Ð¼.
description: 82 pages, 6 pictures, 32 tables, 1 application.
ASSETS, STOCK, DURATION, INVESTMENT TOOLS, CAPITAL, COVARIATION, FINANCIAL QUONTATION, LIQUIDITY, BONDS, REAL INVESTMENT, RISK, MARKET INDEX, INVENTORY TURNOVER, SERVLET, API, JNI, HTTP, LP, MPS, REST
In the given work, the formation of an optimal investment portfolio using linear programming methods was considered. The main methods for the formation of an optimal investment portfolio were considered. The general concepts of optimization problems and linear programming problems was given. A mathematical model for the formation of an optimal investment portfolio has been developed. The technical implementation of the mathematical model was carried out as a program in the Java. The application has been tested and an analysis of the results has been given.
Magnetic Ordering in Blocking Layer and Highly Anisotropic Electronic Structure of High-Tc Iron-based Superconductor Sr2VFeAsO3: LDA+U Studies
Creators: name: Nakamura, Hiroki
name: Machida, Masahiko
Publisher: name: arXiv
Year: 2010
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We calculate electronic structures of a high-Tc iron-based superconductor Sr2VFeAsO3 by LDA+U method. We assume a checker-board antiferromagnetic order on blocking layers including vanadium and strong correlation in d-orbits of vanadium through the Hubbard U. While the standard LDA brings about metallic blocking layers and complicated Fermi surface as in the previous literatures, our calculation changes the blocking layer into insulating one and the Fermi surface becomes quite similar to those of other iron-based superconductors. Moreover, the appearance of the insulating blocking layers predicts high anisotropy on quasi-particle transports and new types of intrinsic Josephson effects.
description: 4 pages, 3 figures.
title: Рынок труда
Creators: name: ELS IPR BOOKS
Publisher: name: Профобразование, Уральский федеральный университет
Year: 2019

description: В учебном пособии представлены теоретические основы рынка труда, раскрыто содержание процесса воспроизводства рабочей силы, развития трудовых отношений в условиях рынка, значения для рынка труда таких явлений, как миграция, занятость, безработица, трипартизм. Нацеливает студентов на исследование и эффективное использование трудового потенциала, исследование рынка труда, социального партнерства. Учебное пособие предназначено для изучения дисциплин «Рынок труда и профессиональная карьера», «Эффективное поведение на рынке труда» по всем профессиям и специальностям среднего профессионального образования. Может быть полезно при изучении дисциплины «Трудовое право» по укрупненной группе специальностей 40.00.00 «Юриспруденция».
Exploiting Simulated User Feedback for Conversational Search: Ranking, Rewriting, and Beyond
Creators: name: Owoicho, Paul
name: Sekulić, Ivan
name: Aliannejadi, Mohammad
name: Dalton, Jeffrey
name: Crestani, Fabio
Publisher: name: arXiv
Year: 2023
Subjects: subject: Information Retrieval (cs.IR)
subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences
subject: H.3.3

description: This research aims to explore various methods for assessing user feedback in mixed-initiative conversational search (CS) systems. While CS systems enjoy profuse advancements across multiple aspects, recent research fails to successfully incorporate feedback from the users. One of the main reasons for that is the lack of system-user conversational interaction data. To this end, we propose a user simulator-based framework for multi-turn interactions with a variety of mixed-initiative CS systems. Specifically, we develop a user simulator, dubbed ConvSim, that, once initialized with an information need description, is capable of providing feedback to a system's responses, as well as answering potential clarifying questions. Our experiments on a wide variety of state-of-the-art passage retrieval and neural re-ranking models show that effective utilization of user feedback can lead to 16% retrieval performance increase in terms of nDCG@3. Moreover, we observe consistent improvements as the number of feedback rounds increases (35% relative improvement in terms of nDCG@3 after three rounds). This points to a research gap in the development of specific feedback processing modules and opens a potential for significant advancements in CS. To support further research in the topic, we release over 30,000 transcripts of system-simulator interactions based on well-established CS datasets.
description: 11 pages, 2 figures, to be published in SIGIR 2023
T-parity, its problems and their solution
Creators: name: Pappadopulo, Duccio
name: Vichi, Alessandro
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We point out a basic difficulty in the construction of little-Higgs models with T-parity which is overlooked by large part of the present literature. Almost all models proposed so far fail to achieve their goal: they either suffer from sizable electroweak corrections or from a breakdown of collective breaking. We provide a model building recipe to bypass the above problem and apply it to build the simplest T-invariant extension of the Littlest Higgs. Our model predicts additional T-odd pseudo-Goldstone bosons with weak scale masses.
description: 25 pages, 2 appendices
title: Статистические методы анализа
Creators: name: ELS IPR BOOKS
Publisher: name: Профобразование, Уральский федеральный университет
Year: 2019

description: В учебном пособии изложены фундаментальные основы статистических методов сбора и обработки массивов данных на уровне хозяйствующих субъектов и на уровне страны в целом. Показаны способы последующего анализа и интерпретации полученных результатов для составления необходимых в профессиональной деятельности планов и проектов. Учебное пособие предназначено для изучения дисциплин «Статистика», «Теория вероятностей и математическая статистика» по укрупненной группе специальностей среднего профессионального образования 38.00.00 «Экономика и управление».
Osservare e Vedere
Creators: name: Arena, Chiara
Publisher: name: Scuola Universitaria della Svizzera Italiana (SUPSI)
Year: 2017

description: Intorno ad una certa età evolutiva, si attraversa una crisi grafica e, nella maggior parte dei casi, si smette di disegnare. Cercare le cause di questo fenomeno e occuparsene è un onere del quale gli insegnanti di Educazione visiva possono e devono farsi carico. Questo perché, non solo le capacità grafiche rappresentano un’importante risorsa di ogni essere umano, in diversi ambiti, non ultimo quello comunicativo, ma anche perché il ragazzo demotivato nel disegno, difficilmente apprezzerà fino in fondo la materia. Il problema può essere risolto cercando di capire quali strumenti sia possibile fornire ai ragazzi per aiutarli ad uscire da questa crisi: esso non è legato alla volontà di disegnare, bensì all’insoddisfazione davanti ai propri lavori. Si è giunti, quindi, alle domande di ricerca: quanto giovano le capacità percettive e quanto quelle di osservazione nel tradurre un oggetto tridimensionale su di un foglio bidimensionale? Quali esercizi sono più efficaci al fine di migliorare le competenze relative al disegno? I risultati hanno portato l’attenzione su problemi generalmente legati all’osservazione dei dettagli, piuttosto che alla percezione del tutto. E’ stato necessario, quindi, allenare l’occhio a vedere, a soffermarsi su alcuni aspetti, ma anche insegnare alla mano diversi tipi di tratto, diversi accostamenti di segno. Questo studio, non certo risolutivo del problema, si propone tuttavia di presentare degli spunti operativi a chiunque fosse interessato ad aiutare i ragazzi a superare la crisi grafica. Materia: educazione visiva e arti plastiche
Soviet and national Kyrgyzstan : local agency and state-building in Central Asia (1918-1940)
Creators: name: Almazbekova, Zhanara
Publisher: name: University of British Columbia
Year: 2021

description: After the 1917 Revolution, the new Soviet state was trying to accommodate local nationalisms by creating opportunities for limited self-determination for non-Russian people in what would eventually become the multinational Soviet Union. The predominantly Muslim Central Asia presented a particular problem, not only due to cultural and religious contrasts, but also because the Russian Imperial rule there had most closely resembled classical colonialism. This research aims to examine the process of Soviet-style nation-building in the specific case of Kyrgyz people, a nomadic nation that by the late 1930s developed institutions of modern state, a territory with defined borders, and the system of education with its own, national written language. I will analyze the role played in this process by Soviet officials in Moscow and by a group of indigenous intellectuals. By scrutinizing complex negotiations between these key actors, my work will address two main questions: what was the specific impact of local agency and indigenous activism on the Soviet state-building project? And just how did these Kyrgyz and Moscow-based players convey their concerns and expertise in creating the "national" Kyrgyz boundaries and the alphabet? The study relies on a variety of primary sources, ranging from diaries to journal periodicals. Recent scholarly literature on Soviet nation-building in Central Asia includes investigations that focused on Uzbekistan, Tajikistan, and Turkmenistan. Studies of the comparable but socially specific case of Kyrgyzstan are conspicuous by their absence. Thus, my research builds on and adds to the existing body of Central Asia-focused scholarship by presenting the birth story of the Kyrgyz nation.
Theory of the ultrafast mode-locked GaN lasers in a large-signal regime
Creators: name: Smetanin, Igor V.
name: Vasil'ev, Peter P.
name: Boiko, Dmitri L.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Optics (physics.optics)
subject: Mathematical Physics (math-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Analytical theory of the high-power passively mode-locked laser with a slow absorber is developed. In distinguishing from previous treatment, our model is valid at pulse energies well exceeding the saturation energy of absorber. This is achieved by solving the mode-locking master equation in the pulse energy-domain representation. The performances of monolithic sub-picosecond blue-violet GaN mode-locked diode laser in the high-power operation regime are analyzed using the developed approach.
description: 6 pages, 2 figures
The rocket effect mechanism in neutron stars in supernova remnants
Creators: name: Agalianou, V.
name: Gourgouliatos, K. N.
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: While the dipole magnetic field axis of neutron stars is usually postulated to cross the star's centre, it may be displaced from this location, as it has been recently indicated in the millisecond pulsar J0030+0451. Under these conditions, the electromagnetic rocket effect may be activated, where the magnetic field exerts a net force, accelerating the star. This post-natal kick mechanism relies on asymmetric electromagnetic radiation from an off-centre dipole may be relevant to the high spatial velocities of pulsars $\sim 10^{3}$ $\rm{km/s}$. Here, we explore its impact in young pulsars associated with supernova remnants and we compare the observational data on characteristic quantities, such as the braking index and proper motion, with results obtained from the rocket effect. Using a Markov Chain Monte Carlo analysis, we explore the required conditions, for the initial spin periods and the distance between the magnetic axis and the star's center, so that the velocity kick due to the rocket effect approaches the present velocity. We find that the electromagnetic rocket effect can account for typical pulsar transverse velocities assuming an initial spin period of 3.8 $\rm{ms}$ and a dipole field whose distance from the centre of the star is approximately 7 $\rm{km}$. We also explore the influence of the rocket effect on the braking index of a neutron star, and we find that for the sample studied this impact is minimal. Finally, we apply the rocket effect model on the pulsars J0030+0451 and J0538+2817, which are likely candidates for this mechanism.
Note on Anomaly Cancellation on SO(32) heterotic 5-brane
Creators: name: Imazato, Harunobu
name: Mizoguchi, Shun'ya
name: Yata, Masaya
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We show that the gauge, gravitational (tangent-bundle) and their mixed anomalies arising from the localized modes near a 5-brane in the SO(32) heterotic string theory cancel with the anomaly inflow from the bulk with the use of the Green-Schwarz mechanism on the brane, similarly to the E_8 x E_8 5-brane case. We also compare our result with Mourad's analysis performed in the small-instanton limit.
description: 6 pages, one reference added
Data stewardship in biblioteca per la scienza sostenibile e aperta
Creators: name: Damiano, Orru
name: Gloria, Fiorani
Publisher: name: Zenodo
Year: 2020
Subjects: open data
stewardship
data steward
sa8000
open science
data stewardship
open access

description: La tesi del Master MARIS (Rendicontazione Innovazione Sostenibilità) è dedicata alla memoria di

 Maria Grazia Gargioli (20 novembre 1946 – 18 aprile 2020) Jonathan Tennant (6 maggio 1988 – 9 aprile 2020) La ricerca analizza pratiche, strumenti, stakeholder, iniziative a supporto della scienza aperta e sostenibile nella biblioteca accademica. La prima parte della tesi inquadra pratiche e benefici sociali legati al citizen engagement della biblioteca nell'accesso aperto alla produzione scientifica accademica, contribuendo all'alfabetizzazione informativa nel perseguimento del target 4.10:
 "assicurarsi che tutti i giovani e una parte sostanziale di adulti, uomini e donne, raggiungano l’alfabetizzazione e l’abilità di calcolo" (SDG 4 Educazione di qualità). Il cuore del lavoro si occupa della data stewardship come supporto alla certificazione etica SA8000. Successivamente nell'elaborato si affronta il tema della data stewardship della ricerca accademica, valutando le pratiche e gli strumenti in biblioteca volti al target 16.10: "garantire l'accesso del pubblico alle informazioni e proteggere le libertà fondamentali, in conformità con la legislazione nazionale e con gli accordi internazionali" (SDG 16 Pace, giustizia e istituzioni solide). Premio per tesi sulla scienza aperta (anni 2019-2020-2021) AISA Associazione italiana per la promozione della scienza aperta
 https://aisa.sp.unipi.it/premio-per-tesi-sulla-scienza-aperta-2021-assegnazioni/ https://www.linkedin.com/pulse/data-stewardship-biblioteca-per-la-scienza-sostenibile-damiano-orru/ video https://youtu.be/RxBn32EbvBQ slide https://www.slideshare.net/damianoorru/data-stewardship-in-biblioteca-per-la-scienza-sostenibile-e-aperta Blog https://opendatasteward.altervista.org/ Facebook https://www.facebook.com/opendatasteward Twitter https://twitter.com/opendatasteward Instagram https://www.instagram.com/opendatasteward/ Pubblicazione cartacea https://opendatasteward.altervista.org/universitalia/
Breakdown of hydrodynamics in the inelastic Maxwell model of granular gases
Creators: name: Brey, J. J.
name: de Soria, M. I. Garcia
name: Maynar, P.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Both the right and left eigenfunctions and eigenvalues of the linearized homogeneous Boltzmann equation for inelastic Maxwell molecules corresponding to the hydrodynamic modes are calculated. Also, some non-hydrodynamic modes are identified. It is shown that below a critical value of the parameter characterizing the inelasticity, one of the kinetic modes decays slower than one of the hydrodynamic ones. As a consequence, a closed hydrodynamic description does not exist in that regime. Some implications of this behavior on the formally computed Navier-Stokes transport coefficients are discussed.
description: Submitted to PRL (13/04/10)
Fannie Mae's National Housing Survey Monthly Home Purchase Sentiment Index (HPSI) and Key Indicators - March, 2019 (a subset of the complete monthly Fannie Mae National Housing Survey)
Creators: name: Foundation, Fannie Mae
Publisher: name: Roper Center for Public Opinion Research
Year: 2019

description: Economy on right/wrong track (1); personal financial situation (1); good/bad time to buy a house (1); good/bad time to sell a house (1); home price changes (3); rental price changes (3); mortgage interest rate changes (1); ability to obtain a home mortgage today (1); current homeownership status (1); renting vs. buying a home in the future (1); concern about unemployment (1); change in income (1).
The Gemini NICI Planet-Finding Campaign: Discovery of a Close Substellar Companion to the Young Debris Disk Star PZ Tel
Creators: name: Biller, Beth A.
name: Liu, Michael C.
name: Wahhaj, Zahed
name: Nielsen, Eric L.
name: Close, Laird M.
name: Dupuy, Trent J.
name: Hayward, Thomas L.
name: Burrows, Adam
name: Chun, Mark
name: Ftaclas, Christ
name: Clarke, Fraser
name: Hartung, Markus
name: Males, Jared
name: Reid, I. Neill
name: Shkolnik, Evgenya L.
name: Skemer, Andrew
name: Tecza, Matthias
name: Thatte, Niranjan
name: Alencar, Silvia H. P.
name: Artymowicz, Pawel
name: Boss, Alan
name: Pino, Elisabete de Gouveia Dal
name: Gregorio-Hetem, Jane
name: Ida, Shigeru
name: Kuchner, Marc J.
name: Lin, Douglas
name: Toomey, Douglas
Publisher: name: arXiv
Year: 2010
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We report the discovery of a tight substellar companion to the young solar analog PZ Tel, a member of the Beta Pictoris moving group observed with high contrast adaptive optics imaging as part of the Gemini NICI Planet-Finding Campaign. The companion was detected at a projected separation of 16.4 +/- 1.0 AU (0.33 +/- 0.01") in April 2009. Second-epoch observations in May 2010 demonstrate that the companion is physically associated and shows significant orbital motion. Monte Carlo modeling constrains the orbit of PZ Tel B to eccentricities > 0.6. The near-IR colors of PZ Tel B indicate a spectral type of M7+/-2 and thus this object will be a new benchmark companion for studies of ultracool, low-gravity photospheres. Adopting an age of 12 +8 -4 Myr for the system, we estimate a mass of 36 +/- 6 Mjup based on the Lyon/DUSTY evolutionary models. PZ Tel B is one of few young substellar companions directly imaged at orbital separations similar to those of giant planets in our own solar system. Additionally, the primary star PZ Tel A shows a 70 um emission excess, evidence for a significant quantity of circumstellar dust that has not been disrupted by the orbital motion of the companion.
description: 15 pages, 4 figures, to appear in ApJ Letters
title: Фитнес
Creators: name: ELS IPR BOOKS
Publisher: name: Профобразование, Уральский федеральный университет
Year: 2019

description: В учебном пособии представлены ключевые понятия и термины, рассмотрены виды фитнеса, показана история фитнеса, затронуты разнообразные теоретические и практические аспекты, которые помогают разобраться в тонкостях и нюансах фитнес-тренинга. Учебное пособие предназначено для изучения дисциплины «Физическая культура» по всем профессиям и специальностям среднего профессионального образования.
Metadata supporting the article: Benefits of local consolidative treatment in oligometastases of solid cancers: a step-wise hierarchical pooled analysis and systematic review
Creators: name: Rim, Chai Hong
name: Shin, In-Soo
name: Sunmin Park
name: Lee, Hye Yoon
Publisher: name: figshare
Year: 2021
Subjects: subject: Cancer
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 111205 Chemotherapy
subject: FOS: Clinical medicine
subject: 111208 Radiation Therapy
subject: 111204 Cancer Therapy (excl. Chemotherapy and Radiation Therapy)
subject: Medicine
subject: 111209 Solid Tumours

description: In this study, the authors conducted a meta-analysis of articles published in PubMed, MEDLINE, EMBASE, and Cochrane library to investigate the effectiveness of local consolidative therapy (LCT) against oligometastases. Data from randomized controlled trials (RCTs), balanced studies, and all studies combined were analyzed in a hierarchical manner.
 Data access: This is a meta-analysis that has used data retrieved directly from the text, figures, tables, and supplementary files of published articles. A list of all 31 articles used during this meta-analysis can be found in the file meta-analysis article info with DOI_RIM.xlsx.
 Study aims and methodology: This meta-analysis aimed to assess the effectiveness of LCT for patients with oligometastases due to any type of solid cancer, thereby validating the benefit of LCT and aiding in clinical decision-making. The meta-analysis was designed to answer the following PICO (patient/population, intervention, comparison and outcomes) question: “Does LCT confer an oncologic benefit for patients with oligometastases?” Pooled analyses of 31 studies (including seven randomized trials) was conducted, investigating the effectiveness of LCT on overall survival. PubMed, MEDLINE, EMBASE, and Cochrane library were systematically searched by two independent reviewers for articles published up to March 4, 2020. The following search terms were used with no language restrictions: (oligometastasis OR oligometastases OR oligometastatic OR “limited metastatic” OR “limited metastasis” OR “limited metastases”) AND survival AND (randomised OR randomized OR versus OR comparison OR compare OR controlled). The reference lists of the extracted articles were also searched. Data were extracted using a pre-standardized form; progression-free survival (PFS) and overall survival (OS) data were estimated from descriptive graphs in the absence of numerical reports. For more details on the methodology including selection criteria and data extraction and quality assessment, please refer to the related article.
Geometric measure of quantum discord over two-sided projective measurements
Creators: name: Xu, Jianwei
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The original definition of quantum discord of bipartite states was defined over one-sided projective measurements, it describes quantum correlation more extensively than entanglement. Dakic, Vedral, and Brukner [Phys. Rev. Lett. 105 (2010) 190502] introduced a geometric measure for this quantum discord, and Luo, Fu [Phys. Rev. A 82 (2010) 034302] simplified the variation expression of it. In this paper we introduce a geometric measure for the quantum discord over two-sided projective measurements. A simplified expression and a lower bound of this geometric measure are derived and explicit expressions are obtained for some special cases.
(3+1) Massive Dirac Fermions with Ultracold Atoms in Optical Lattices
Creators: name: Lepori, L.
name: Mussardo, G.
name: Trombettoni, A.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We propose the experimental realization of (3+1) relativistic Dirac fermions using ultracold atoms in a rotating optical lattice or, alternatively, in a synthetic magnetic field. This approach has the advantage to give mass to the Dirac fermions by coupling the ultracold atoms to a Bragg pulse. A dimensional crossover from (3+1) to (2+1) Dirac fermions can be obtained by varying the anisotropy of the lattice. We also discuss under which conditions the interatomic potentials give rise to relativistically invariant interactions among the Dirac fermions.
title: Дискретная математика
Creators: name: ELS IPR BOOKS
Publisher: name: Профобразование, Уральский федеральный университет
Year: 2019

description: Учебное пособие включает в себя базисные разделы дискретной математики: бинарные отношения, элементы общей алгебры и теорию чисел. В издании предлагаются упражнения для самостоятельного решения. Предназначено для изучения дисциплины «Дискретная математика» по укрупненным группам специальностей среднего профессионального образования 09.00.00 «Информатика и вычислительная техника», 10.00.00 «Информационная безопасность».
Halo-Galaxy Lensing: A Full Sky Approach
Creators: name: de Putter, Roland
name: Takada, Masahiro
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The halo-galaxy lensing correlation function or the average tangential shear profile over sampled halos is a very powerful means of measuring the halo masses, the mass profile, and the halo-mass correlation function of very large separations in the linear regime. We reformulate the halo-galaxy lensing correlation in harmonic space. We find that, counter-intuitively, errors in the conventionally used flat-sky approximation remain at a % level even at very small angles. The errors increase at larger angles and for lensing halos at lower redshifts: the effect is at a few % level at the baryonic acoustic oscillation scales for lensing halos of $z\sim 0.2$, and comparable with the effect of primordial non-Gaussianity with $f_{\rm NL}\sim 10$ at large separations. Our results allow to readily estimate/correct for the full-sky effect on a high-precision measurement of the average shear profile available from upcoming wide-area lensing surveys.
description: 12 pages, 4 figures
title: Защитные покрытия
Creators: name: ELS IPR BOOKS
Publisher: name: Профобразование, Уральский федеральный университет
Year: 2019

description: В учебном пособии рассматриваются вопросы применения покрытий для защиты поверхности изделий от различных типов воздействий: износа, высоких температур и агрессивных сред. Приведены классификации покрытий по ряду признаков: материалам, способам нанесения, функциональным свойствам. Основное внимание уделено применению диффузионных, газотермических и гальванических покрытий. Учебное пособие предназначено для изучения дисциплины «Теория и технология покрытия» по специальности среднего профессионального образования 22.02.07 «Порошковая металлургия, композиционные материалы, покрытия».
Topology-guided sampling of nonhomogeneous random processes
Creators: name: Mischaikow, Konstantin
name: Wanner, Thomas
Publisher: name: arXiv
Year: 2010
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics

description: Topological measurements are increasingly being accepted as an important tool for quantifying complex structures. In many applications, these structures can be expressed as nodal domains of real-valued functions and are obtained only through experimental observation or numerical simulations. In both cases, the data on which the topological measurements are based are derived via some form of finite sampling or discretization. In this paper, we present a probabilistic approach to quantifying the number of components of generalized nodal domains of nonhomogeneous random processes on the real line via finite discretizations, that is, we consider excursion sets of a random process relative to a nonconstant deterministic threshold function. Our results furnish explicit probabilistic a priori bounds for the suitability of certain discretization sizes and also provide information for the choice of location of the sampling points in order to minimize the error probability. We illustrate our results for a variety of random processes, demonstrate how they can be used to sample the classical nodal domains of deterministic functions perturbed by additive noise and discuss their relation to the density of zeros.
description: Published in at http://dx.doi.org/10.1214/09-AAP652 the Annals of Applied Probability (http://www.imstat.org/aap/) by the Institute of Mathematical Statistics (http://www.imstat.org)
On the asymptotic internal path length and the asymptotic Wiener index of random split trees
Creators: name: Munsonius, G. O.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics

description: The random split tree introduced by Devroye (1999) is considered. We derive a second order expansion for the mean of its internal path length and furthermore obtain a limit law by the contraction method. As an assumption we need the splitter having a Lebesgue density and mass in every neighborhood of 1. We use properly stopped homogeneous Markov chains, for which limit results in total variation distance as well as renewal theory are used. Furthermore, we extend this method to obtain the corresponding results for the Wiener index.
description: 29 pages
title: ÐÐ½ÑÐµÑÐ½ÐµÑ-ÑÐµÑ Ð½Ð¾Ð»Ð¾Ð³Ð¸Ð¸ Ð¿ÑÐ¾Ð´Ð²Ð¸Ð¶ÐµÐ½Ð¸Ñ Ð¼ÐµÑÐ¾Ð¿ÑÐ¸ÑÑÐ¸Ð¹ (Ð½Ð° Ð¿ÑÐ¸Ð¼ÐµÑÐµ ÐÐÐ Â«ÐÐ»Ð°Ð½ÐµÑÐ°ÑÐ¸Ð¹ 1Â»)
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: Internet technologies for promoting events (for example, Â«Planetarium 1Â» LLC)
Creators: name: Ð¨Ð°ÑÑÑÐ¿Ð¾Ð², Ð¨Ð°ÑÐ¼ÑÑ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: 2021
Subjects: Ð¸Ð½ÑÐµÑÐ½ÐµÑ-ÑÐµÑ Ð½Ð¾Ð»Ð¾Ð³Ð¸Ð¸
Ð¼Ð°ÑÐºÐµÑÐ¸Ð½Ð³
ÐºÐ¾Ð¼Ð¿Ð°Ð½Ð¸Ñ Ð¾Ð¾Ð¾ Â«Ð¿Ð»Ð°Ð½ÐµÑÐ°ÑÐ¸Ð¹ 1Â»
pr Ð² Ð¸Ð½ÑÐµÑÐ½ÐµÑÐµ
event ÑÑÐµÑÐ°
Ð¼Ð¾Ð±Ð¸Ð»ÑÐ½Ð°Ñ ÑÐµÐºÐ»Ð°Ð¼Ð°
internet technologies
marketing
company llc "planetariy 1"
pr on the internet
event sphere
mobile advertising

description: Ð Ð´Ð°Ð½Ð½Ð¾Ð¹ Ð²ÑÐ¿ÑÑÐºÐ½Ð¾Ð¹ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð¾Ð¹ ÑÐ°Ð±Ð¾ÑÐµ ÑÐ°ÑÑÐ¼Ð°ÑÑÐ¸Ð²Ð°ÐµÑÑÑ Ð¿ÑÐ¾Ð±Ð»ÐµÐ¼Ð° Ð¿ÑÐ¾Ð´Ð²Ð¸Ð¶ÐµÐ½Ð¸Ñ Ð¼ÐµÑÐ¾Ð¿ÑÐ¸ÑÑÐ¸Ð¹ ÐºÐ¾Ð¼Ð¿Ð°Ð½Ð¸Ð¸ ÐÐÐ Â«ÐÐ»Ð°Ð½ÐµÑÐ°ÑÐ¸Ð¹ 1Â» Ð² ÑÑÐ»Ð¾Ð²Ð¸ÑÑ Ð²ÑÑÐ¾ÐºÐ¾Ð¹ ÐºÐ¾Ð½ÐºÑÑÐµÐ½ÑÐ¸Ð¸ Ð½Ð° event ÑÑÐ½ÐºÐµ. Ð ÑÐ°Ð±Ð¾ÑÐµ Ð¸Ð·ÑÑÐµÐ½Ñ Ð¸Ð½ÑÐµÑÐ½ÐµÑ-ÑÐµÑÐ½Ð¾Ð»Ð¾Ð³Ð¸Ð¸ Ð¿ÑÐ¾Ð´Ð²Ð¸Ð¶ÐµÐ½Ð¸Ñ event ÑÐ¾Ð±ÑÑÐ¸Ð¹ Ð½Ð° ÑÑÐ½ÐºÐµ. Ð Ð¿ÑÐ°ÐºÑÐ¸ÑÐµÑÐºÐ¾Ð¹ ÑÐ°ÑÑÐ¸ Ð±ÑÐ» Ð¿ÑÐ¾Ð²ÐµÐ´ÐµÐ½ ÐºÐ¾Ð½ÐºÑÑÐµÐ½ÑÐ½ÑÐ¹ Ð°Ð½Ð°Ð»Ð¸Ð·, Ð²ÑÐ´ÐµÐ»ÐµÐ½Ñ ÑÐ¸Ð»ÑÐ½ÑÐµ Ð¸ ÑÐ»Ð°Ð±ÑÐµ ÑÑÐ¾ÑÐ¾Ð½Ñ ÐºÐ¾Ð¼Ð¿Ð°Ð½Ð¸Ð¸.
description: In this final qualifying work, the problem of promoting the events of PlanetariÂ¬um 1 LLC in the highly competitive event market is considered. The paper studies Internet technologies for promoting event events on the market. In the practical part, a competitive analysis was carried out, the strengths and weaknesses of the company were highlighted.
Asymptotic-Preserving scheme for a bi-fluid Euler-Lorentz model
Creators: name: Brull, Stéphane
name: Degond, Pierre
name: Deluzet, Fabrice
name: Mouton, Alexandre
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: The present work is devoted to the simulation of a strongly magnetized plasma considered as a mixture of an ion fluid and an electron fluid. For the sake of simplicity, we assume that the model is isothermal and described by Euler equations coupled with a term representing the Lorentz force. Moreover we assume that both Euler systems are coupled through a quasi-neutrality constraint. The numerical method which is described in the present document is based on an Asymptotic-Preserving semi-discretization in time of a variant of this two-fluid Euler-Lorentz model with a small perturbation of the quasi-neutrality constraint. Firstly, we present the two-fluid model and the motivations for introducing a small perturbation into the quasi-neutrality equation, then we describe the time semi-discretization of the perturbed model and a fully-discrete finite volume scheme based on it. Finally, we present some numerical results which have been obtained with this method.
Structure, mass and stability of galactic disks
Creators: name: van der Kruit, P. C.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: In this review I concentrate on three areas related to structure of disks in spiral galaxies. First I will review the work on structure, kinematics and dynamics of stellar disks. Next I will review the progress in the area of flaring of HI layers. These subjects are relevant for the presence of dark matter and lead to the conclusion that disk are in general not `maximal', have lower M/L ratios than previously suspected and are locally stable w.r.t. Toomre's Q criterion for local stability. I will end with a few words on `truncations' in stellar disks.
description: Invited review at "Galaxies and their Masks" for Ken Freeman's 70-th birthday, Sossusvlei, Namibia, April 2010. A version with high-res. figures is available at http://www.astro.rug.nl/~vdkruit/jea3/homepage/Namibiachapter.pdf
Recent star formation in local, morphologically disturbed spheroidal galaxies on the optical red sequence
Creators: name: Kaviraj, Sugata
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We combine GALEX (ultra-violet; UV) and SDSS (optical) photometry to study the recent star formation histories of ~100 field galaxies on the optical red sequence, a large fraction of which exhibit widespread signs of disturbed morphologies in deep optical imaging that are consistent with recent merging events. More than 70% of bulge-dominated galaxies in this sample show tidal features at a surface brightness limit of 28 mag arcsec^-2. We find that, while they inhabit the optical red sequence, they show a wide spread in their UV colours (~4 mags), akin to what has been discovered recently in the general early-type population. A strong correlation is found between UV colour and the strength of the tidal distortions, such that the bluest galaxies are more distorted. This strongly suggests that the blue UV colours seen in many nearby early-types are driven by (low-level) merger-induced star formation within the last 3 Gyrs, contributing less than 10% of the stellar mass. If the ongoing mergers in this sample, which have a median mass ratio of 1:4, are representative of the nearby red merger population, then less than 25% of the new stellar mass in the remnants is typically added through merger-induced star formation. While the dust extinction in the inter-stellar medium (ISM) in these galaxies is small [E(B-V)<0.1], the local dust content of the star-forming regions is, on average, a factor of 3 higher. Finally, we use our theoretical machinery to provide a recipe for calculating the age of the most recent star formation event (t2) in nearby (z<0.1) red early-type galaxies: Log (t2) [Gyrs] ~ 0.6.[(NUV-u)-(g-z)-1.73], where NUV, u, g and z are the observed photometric magnitudes of the galaxies in the GALEX/SDSS filtersets.
description: MNRAS in press
Some research problems under finite mixture models
Creators: name: Ho, Ho Yin
Publisher: name: University of British Columbia
Year: 2021

description: This thesis studies two types of research problems under finite mixture models. The first type is mixing distribution estimation. It is well-known that the maximum likelihood estimator (MLE) fails under some finite mixture models because their likelihood function is unbounded. This unboundedness occurs, for instance, under the finite normal mixture model, the finite gamma mixture model, and the finite location-scale mixture model. In the literature, different estimation methods have been developed by modifying the likelihood functions to restore consistency. The penalized MLE is one of the popular remedies. Though the consistency of penalized MLE has been studied extensively by many researchers, the results were often acquired under finite mixture models with some specific forms of kernel distribution. We provide a route to establish the consistency of penalized MLE under a unified framework that covers many finite mixture models. This route summarizes and helps to improve the existing results. We also study a novel way to modify the likelihood function based on data augmentation. This modified likelihood function produces a consistent estimator, the augmented MLE, under those finite mixture models with unbounded likelihood functions. In some circumstances, the augmented MLE is more efficient than its competitors in the literature. The second type of research problem is hypothesis testing for homogeneity un- der finite mixture models. We develop two tests for this purpose. First, our work migrates the Expectation-Maximization (EM) test to a finite vector-parameter mixture model with structural parameters. The EM test is a numeric and analytically tractable likelihood-based test, which has been applied to many finite mixture models. The second test is Neyman’s C(α) test, a score test variant. We generalize this test to finite vector-parameter mixture models following the principles of Neyman. Our generalization aligns with some existing results in the literature, though they are motivated differently. Yet we find this generalized test can be asymptotically biased under the finite gamma mixture model. To overcome this deficiency, we develop another C(α) test that we conjecture to be asymptotically unbiased.
title: Инженерная графика
Creators: name: ELS IPR BOOKS
Publisher: name: Профобразование, Уральский федеральный университет
Year: 2019

description: В учебном пособии изложены правила выполнения и оформления чертежей деталей, сборочных единиц, а также схем. Рассмотрены правила деталирования чертежей общего вида, приведены сведения о неразъемных соединениях. Предназначено для изучения дисциплины «Инженерная графика» по профессиям и специальностям среднего профессионального образования, связанным с инженерным делом, технологиями и техническими науками.
title: Инженерная и компьютерная графика
Creators: name: ELS IPR BOOKS
Publisher: name: Профобразование, Уральский федеральный университет
Year: 2019

description: В учебном пособии даны основные положения об оформлении графических работ в соответствии с требованиями единой системы конструкторской документации. Подробно рассмотрены элементы интерфейса программы КОМПАС-График. Уделено особое внимание настройке рабочего пространства и основных приемов работы по созданию и редактированию графических объектов в чертежно-конструкторском редакторе КОМПАС-График V14. Учебное пособие предназначено для изучения дисциплин «Инженерная компьютерная графика», «Инженерная и компьютерная графика» по укрупненным группам специальностей среднего профессионального образования 09.00.00 «Информатика и вычислительная техника», 10.00.00 «Информационная безопасность», 11.00.00 «Электроника, радиотехника и системы связи».
Multiple paternity in the pueriparous North African fire salamander, Salamandra algira, supports polyandry as a successful mating strategy in low fecundity Salamandra lineages
Creators: name: Alarcón-Ríos, Lucía
name: Velo-Antón, Guillermo
Publisher: name: Brill Online
Year: 2021
Subjects: subject: 60299 Ecology not elsewhere classified
subject: FOS: Biological sciences

description: Multiple paternity is widespread in nature and despite costs, it has many associated benefits like increased genetic diversity and fertilization success. It has been described in many viviparous systems, suggesting the existence of some fitness advantages counteracting the inherent costs of viviparity, such as fecundity reduction and high parental investment. Reproductively polymorphic species, like the urodele Salamandra algira, which shows two types of viviparity: larviparity (i.e., delivering aquatic larvae), and pueriparity (i.e., delivering terrestrial metamorphosed juveniles), are suitable systems to study the relationship between reproductive modes and polygamous mating. Here, multiple paternity is confirmed in a pueriparous lineage of S. algira, as previously verified for the pueriparous lineages of the reproductively polymorphic species S. salamandra, suggesting polyandry is a successful mating strategy in pueriparous systems with reduced brood sizes. We discuss the potential benefits of polyandry in the context of viviparity evolution in urodeles.
Serrin Type Criterion for the Three-Dimensional Viscous Compressible Flows
Creators: name: Huang, Xiangdi
name: Li, Jing
name: Xin, Zhouping
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 35Q30, 76N10

description: We extend the well-known Serrin's blowup criterion for the three-dimensional (3D) incompressible Navier-Stokes equations to the 3D viscous compressible cases. It is shown that for the Cauchy problem of the 3D compressible Navier-Stokes system in the whole space, the strong or smooth solution exists globally if the velocity satisfies the Serrin's condition and either the supernorm of the density or the $L^1(0,T;L^\infty)$-norm of the divergence of the velocity is bounded. Furthermore, in the case that either the shear viscosity coefficient is suitably large or there is no vacuum, the Serrin's condition on the velocity can be removed in this criteria.
description: 16 pages
An upper bound for the number of independent sets in regular graphs
Creators: name: Galvin, David
Publisher: name: arXiv
Year: 2010
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05C69 (Primary), 05A16, 82B20 (Secondary)

description: Write ${\cal I}(G)$ for the set of independent sets of a graph $G$ and $i(G)$ for $|{\cal I}(G)|$. It has been conjectured (by Alon and Kahn) that for an $N$-vertex, $d$-regular graph $G$, $$ i(G) \leq \left(2^{d+1}-1\right)^{N/2d}. $$ If true, this bound would be tight, being achieved by the disjoint union of $N/2d$ copies of $K_{d,d}$. Kahn established the bound for bipartite $G$, and later gave an argument that established $$ i(G)\leq 2^{\frac{N}{2}\left(1+\frac{2}{d}\right)} $$ for $G$ not necessarily bipartite. In this note, we improve this to $$ i(G)\leq 2^{\frac{N}{2}\left(1+\frac{1+o(1)}{d}\right)} $$ where $o(1) \rightarrow 0$ as $d \rightarrow \infty$, which matches the conjectured upper bound in the first two terms of the exponent. We obtain this bound as a corollary of a new upper bound on the independent set polynomial $P(λ,G)=\sum_{I \in {\cal I}(G)} λ^{|I|}$ of an $N$-vertex, $d$-regular graph $G$, namely $$ P(\gl,G) \leq (1+\gl)^{\frac{N}{2}} 2^{\frac{N(1+o(1))}{2d}} $$ valid for all $\gl > 0$. This also allows us to improve the bounds obtained recently by Carroll, Galvin and Tetali on the number of independent sets of a fixed size in a regular graph.