cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Neutrino Astronomy with future neutrino telescopes
Creators: name: Karle, Albrecht
Publisher: name: Zenodo
Year: 2024
Subjects: Neutrino Telescopes
Cosmic Neutrinos

description: Plenary Talk presented at the XX International Workshop on Neutrino Telescopes - Venice 23-27 October 2023

 

Abstract:

In the past decade, IceCube has established cosmic neutrino flux. IceCube has also observed neutrinos from the first extragalactic sources and the Milky Way. These observations set the stage for the next generations of neutrino telescopes worldwide. Multiple large water Cherenkov telescopes of kilometer-scale are being constructed or developed. Even more ambitious telescopes are being proposed and developed at the ten km scale. Multiple initiatives at the 1000km^3 target scale are proposed using radio and Earth-skimming nu_tau approaches at higher energies. I will review the current and future detectors. An order-of-magnitude increase within the next decade is realistic and urgently needed to obtain more sky coverage and increase the sensitivity by order of magnitude.
Uncertainties in limits on TeV-gravity from neutrino-induced showers
Creators: name: Ahn, Eun-Joo
name: Cavaglia, Marco
name: Olinto, Angela V
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In models with TeV-scale gravity, ultrahigh energy cosmic rays can generate microscopic black holes in the collision with atmospheric and terrestrial nuclei. It has been proposed that stringent bounds on TeV-scale gravity can be obtained from the absence of neutrino cosmic ray showers mediated by black holes. However, uncertainties in the cross section of black hole formation and, most importantly, large uncertainties in the neutrino flux affects these bounds. As long as the cosmic neutrino flux remains unknown, the non-observation of neutrino induced showers implies less stringent limits than present collider limits.
description: Changes to match published version
Effective transport properties of conformal Voronoi-bounded columns via recurrent boundary element expansions
Creators: name: Arnold, Matthew D.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: Effective transport properties of heterogeneous structures are predicted by geometric microstructural parameters, but these can be difficult to calculate. Here, a boundary element code with a recurrent series method accurately and efficiently determines the high order parameters of polygonal and conformal prisms in regular two-dimensional lattices and Voronoi tessellations (VT). This reveals that proximity to simpler estimates is associated with: centroidal VT (cf random VT), compactness, and VT structures (cf similarly compact semi-regular lattices). An error in previously reported values for triangular lattices is noted.
Open Letter to the NSF about Gender Data Collection Practices
Creators: name: Báez, Román
name: Timber Burnette
name: Howell, Lars
name: Lynch, Emerson
name: Kottler, Ezra Jay
name: Lund, Parker K
name: Barts, Nick
name: DeHority, Riley
Publisher: name: figshare
Year: 2021
Subjects: Science Policy

description: An open letter to the National Science Foundation and the National Center for Science and Engineering Statistics asking them how to improve how they collect gender data on their required forms and surveys. Signed by 413 trans and gender diverse scientists and 2280 scientist allies. Signature list redacted from public posting of letter.
СТРУКТУРА ТА ОСОБЛИВОСТІ ПОБУДОВИ АВТОМАТИЗОВАНОЇ СИСТЕМИ СТАТИСТИЧНОЇ ДІАГНОСТИКИ ВІТРОЕЛЕКТРИЧНИХ АГРЕГАТІВ
Creators: name: Соболевська Леся Георгіївна
Publisher: name: figshare
Year: 2019
Subjects: Economics

description: Розглянуто структуру, алгоритми та програмне забезпечення, що входять до складу автоматизованої системи статистичної діагностики вузлів вітроелектричних агрегатів. Для обґрунтування математичного апарату цієї системи, проведено аналіз використовуваних математичних моделей та діагностичних ознак, що описують процеси вібрацій та нерівномірність зміни обертових моментів, які виникають на валу вітроелектричного агрегату.Описано узагальнений алгоритм вирішення задачі діагностування за допомогою створеної системи та структуру лабораторного зразка автоматизованої системи діагностики вузлів вітроелектричних агрегатів. Проведено перевірку гіпотез за правилом Неймана-Пірсона для визначення стану підшипника та класифікації дефекту із заданою точністю та достовірністю.  
Transitions of black hole transients to the low/hard state under the microscope
Creators: name: Kalemci, E.
name: Tomsick, J. A.
name: Rothschild, R. E.
name: Pottschmidt, K.
name: Kaaret, P.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We characterized the evolution of spectral and temporal properties of several Galactic black hole transients observed between 1996-2001 using the data from well sampled PCA observations close to the transition to the low/hard state. We showed that the changes in temporal properties are much sharper than the changes in the spectral properties, and it is much easier to identify a state transition with the temporal properties. The ratio of the power-law flux to the total flux in the 3-25 keV band increases close to the transition, and the power-law flux shows a sharp increase along with the changes in temporal properties during the transitions. In this work we concentrate on the decay of two recent outbursts, from 4U 1543$-$47, and H1743$-$322 and discuss the state transitions by tracking their daily, and sometimes hourly evolution, and interpret results based on the expectations from our earlier observations.
description: 4 pages, 6 figures, To appear in the proceedings of X-Ray Timing 2003: Rossi and Beyond, ed. P. Kaaret, F. K. Lamb, & J. H. Swank (Melville, NY: American Institute of Physics)
Additional file 2 of Provider perspectives on beta-lactam therapeutic drug monitoring programs in the critically ill: a protocol for a multicenter mixed-methods study
Creators: name: Barreto, Erin F.
name: Rule, Andrew D.
name: Alshaer, Mohammad H.
name: Roberts, Jason A.
name: Abdul Aziz, Mohd Hafiz
name: Scheetz, Marc H.
name: Mara, Kristin C.
name: Jannetto, Paul J.
name: Gajic, Ognjen
name: O’Horo, John C.
name: Boehmer, Kasey R.
Publisher: name: figshare
Year: 2021
Subjects: subject: Space Science
subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Biotechnology
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Information Systems not elsewhere classified
subject: Mathematical Sciences not elsewhere classified
subject: Cancer
subject: Science Policy
subject: Infectious Diseases
subject: FOS: Health sciences

description: Additional file 2. Survey instrument.
Price Explosiveness and Index Trader Behavior in the Corn, Soybean, and Wheat Futures Markets
Creators: name: Liao-Etienne, Xiaoli Liao-
name: Irwin, Scott H.
name: Garcia, Philip
name: Liao-Etienne, Xiaoli Liao-
name: Irwin, Scott H.
name: Garcia, Philip
Publisher: name: Unknown
Year: 2012
Subjects: Agricultural marketing

description: The purpose of this paper is to assess whether index investment Granger causes grain futures price movements during explosive periods. A forward and backward recursive procedure developed by Phillips, Shi, and Yu (2012) is used to detect and date-stamp explosive periods in in the price of corn, soybean, and wheat futures traded on the CBOT, as well as wheat futures traded on the KCBT between January 2004 and February 2012. The statistical tests indicate that most of these grain futures markets experienced explosive periods between the end of 2007 and first half of 2008, as well as in the second half of 2010. If CITs are indeed responsible for the sharp price fluctuations as claimed by Masters (2008, 2009) and others, they are mostly likely to have led the price movement during these explosive periods. Using dummy variables to reflect the explosive periods identified with the PSY procedure, we investigate the relationship between commodity index (CIT) positions and changes in futures prices. We find that no Granger causality can be established from changes in CITs net long positions to returns in corn, soybeans, and KC wheat futures in either explosive or non-explosive periods, consistent with the results from the traditional Granger causality test. For wheat futures traded on the CBOT, estimation results show that CITs Granger cause returns in explosive and non-explosive periods. Examination of the impulse response function, however, suggests that the effect is relatively small and dissipates quickly. Overall, the results from the modified Granger causality test January 2004 and February 2012.
On the Spectrum of Holonomy Algebras
Creators: name: Abbati, Maria Cristina
name: Mania`, Alessandro
Publisher: name: arXiv
Year: 2002
Subjects: subject: Mathematical Physics (math-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences
subject: 81T13, 46J10

description: Connections on a trivial bundle MxG can be identified with their holonomy maps, i.e. with homomorphisms of a groupoid of paths in M into the gauge group G. For a connected compact G, various algebras depending on the set of the smooth connections through their holonomy maps have been introduced in the literature, called cylindrical and holonomy algebras. We discuss the relations between these algebras and the consistence of their spectra.
description: 23 pages, no figures, to appear in J.Geom.Phys
The Increasing Participation of China in the World Soybean Market and Its Impact on Price Linkages in Futures Markets
Creators: name: Christofoletti, Maria Alice Móz
name: Silva, Rodolfo Margato Da
name: Mattos, Fabio
name: Christofoletti, Maria Alice Móz
name: Silva, Rodolfo Margato Da
name: Mattos, Fabio
Publisher: name: Unknown
Year: 2012
Subjects: Agricultural marketing

description: This paper examines price linkages between soybean futures contracts traded in China, U.S, Brazil and Argentina for the period ranging from 2002 to 2011. The main findings show that U.S. prices still appear to have a dominant role to explain price changes in international markets. Results also indicate stronger linkages between prices in China and in the other three markets, especially after 2006. This result suggests the Chinese market has become more integrated with international markets in recent years, which might reflect the growing participation of China in international trade and the development of its soybean futures contract.
Interactive Variance Attention based Online Spoiler Detection for Time-Sync Comments
Creators: name: Yang, Wenmian
name: Jia, Weijia
name: Gao, Wenyuan
name: Zhou, Xiaojie
name: Luo, Yutao
Publisher: name: arXiv
Year: 2019
Subjects: subject: Information Retrieval (cs.IR)
subject: Computation and Language (cs.CL)
subject: Multimedia (cs.MM)
subject: FOS: Computer and information sciences

description: Nowadays, time-sync comment (TSC), a new form of interactive comments, has become increasingly popular in Chinese video websites. By posting TSCs, people can easily express their feelings and exchange their opinions with others when watching online videos. However, some spoilers appear among the TSCs. These spoilers reveal crucial plots in videos that ruin people's surprise when they first watch the video. In this paper, we proposed a novel Similarity-Based Network with Interactive Variance Attention (SBN-IVA) to classify comments as spoilers or not. In this framework, we firstly extract textual features of TSCs through the word-level attentive encoder. We design Similarity-Based Network (SBN) to acquire neighbor and keyframe similarity according to semantic similarity and timestamps of TSCs. Then, we implement Interactive Variance Attention (IVA) to eliminate the impact of noise comments. Finally, we obtain the likelihood of spoiler based on the difference between the neighbor and keyframe similarity. Experiments show SBN-IVA is on average 11.2\% higher than the state-of-the-art method on F1-score in baselines.
description: Accepted by CIKM 2019
Sentiment Analysis of German Twitter
Creators: name: Sidorenko, Wladimir
Publisher: name: arXiv
Year: 2019
Subjects: subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: This thesis explores the ways by how people express their opinions on German Twitter, examines current approaches to automatic mining of these feelings, and proposes novel methods, which outperform state-of-the-art techniques. For this purpose, I introduce a new corpus of German tweets that have been manually annotated with sentiments, their targets and holders, as well as polar terms and their contextual modifiers. Using these data, I explore four major areas of sentiment research: (i) generation of sentiment lexicons, (ii) fine-grained opinion mining, (iii) message-level polarity classification, and (iv) discourse-aware sentiment analysis. In the first task, I compare three popular groups of lexicon generation methods: dictionary-, corpus-, and word-embedding-based ones, finding that dictionary-based systems generally yield better lexicons than the last two groups. Apart from this, I propose a linear projection algorithm, whose results surpass many existing automatic lexicons. Afterwords, in the second task, I examine two common approaches to automatic prediction of sentiments, sources, and targets: conditional random fields and recurrent neural networks, obtaining higher scores with the former model and improving these results even further by redefining the structure of CRF graphs. When dealing with message-level polarity classification, I juxtapose three major sentiment paradigms: lexicon-, machine-learning-, and deep-learning-based systems, and try to unite the first and last of these groups by introducing a bidirectional neural network with lexicon-based attention. Finally, in order to make the new classifier aware of discourse structure, I let it separately analyze the elementary discourse units of each microblog and infer the overall polarity of a message from the scores of its EDUs with the help of two new approaches: latent-marginalized CRFs and Recursive Dirichlet Process.
description: Ph.D. Dissertation
Additional file 3 of Provider perspectives on beta-lactam therapeutic drug monitoring programs in the critically ill: a protocol for a multicenter mixed-methods study
Creators: name: Barreto, Erin F.
name: Rule, Andrew D.
name: Alshaer, Mohammad H.
name: Roberts, Jason A.
name: Abdul Aziz, Mohd Hafiz
name: Scheetz, Marc H.
name: Mara, Kristin C.
name: Jannetto, Paul J.
name: Gajic, Ognjen
name: O’Horo, John C.
name: Boehmer, Kasey R.
Publisher: name: figshare
Year: 2021
Subjects: subject: Space Science
subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Biotechnology
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Information Systems not elsewhere classified
subject: Mathematical Sciences not elsewhere classified
subject: Cancer
subject: Science Policy
subject: Infectious Diseases
subject: FOS: Health sciences

description: Additional file 3. Semi-structured interview guide.
Analyzing Crop Revenue Safety Net Program Alternatives and Implications on Marketing Decisions
Creators: name: Jansen, Jim A.
name: Lubben, Bradley D.
name: Jansen, Jim A.
name: Lubben, Bradley D.
Publisher: name: Unknown
Year: 2012
Subjects: Agricultural marketing

description: This study evaluates the crop revenue effects of combining federal farm income safety net programs, crop insurance policies, and marketing arrangements. Eight representative farms across Nebraska are used to stochastically simulate the financial impact of nine risk management strategies to determine the optimal outcome during the 2011 production year. Procedures utilized to evaluate the stochastic results included the Expected Value, Coefficient of Variation, Stochastic Dominance, StopLight, and Stochastic Efficiency with Respect to a Function. Results indicate that out of the set of predefined strategies, the portfolio combination involving the government program choice of the Direct and Counter-Cyclical Program, crop revenue insurance with the fall harvest option, and hedging for the simulated time period provides the optimal outcome across the majority of representative farm scenarios in 2011.
Metriona elatior
Creators: name: Sekerka, Lukáš
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Chrysomelidae
Metriona
Metriona elatior

description: * Metriona elatior (Klug, 1829)
 Published records. Barueri; Butantan; Campos de Jordão (Bඈඋඈඐංൾർ 1996); Campinas (Sංආõൾඌ +| Mඈඇඇඣ 2008); Jundiaí (Bඈඋඈඐංൾർ +| TൺΚං- ඓൺඐൺ 2011).
 Additional records. BRAZIL: Sඞඈ Pൺඎඅඈ: São Paulo Capital, 18.ii.1912, 1 spec., 21.ii.1912, 1 spec., G. E. Bryant leg. (BMNH); Serra de Bocaina, 1500 m, xi.1965, 2 spec. (NHMB).
 Distribution. Argentina, Brazil (Goiás, Minas Gerais, Paraná, Rio de Janeiro, Rio Grande do Sul, Santa Catarina, São Paulo), Paraguay, and Uruguay.
 Remarks. Bඈඋඈඐංൾർ (1996) recorded several species, which are common in southern part of South America, as new to French Guiana based on old material labelled as from Bas Maroni. Bඈඋඈඐංൾർ +|MඈඋൺǤඎൾඌ (2005) critically evaluated all records published from French Guiana and removed four of these species published from Bas Maroni as their occurrence in French Guiana is very improbable; however, M. elatior remained in the review as an accepted record. In my opinion, also the specimens of M. elatior were mislabelled as the species occurs mainly in the Paraná Basin and along the Brazilian coast reaches as north as Rio de Janeiro. Also, the record from the state of Pará (Santarém) is dubious as M. elatior is usually associated with seasonally dry or semi-dry savannas and semideciduous forests. Moreover, M. elatior is one of the most common species of Brazilian cassidines, collected usually by almost every collector who collected some cassidines, and from each of the other states it has been confirmed by many specimens from multiple localities. Indeed, the present-day knowledge of the distribution of cassidines in Brazil is still far from being complete but based on field experience and general distribution patterns of cassidines, I find these two records very improbable and thus remove Pará and French Guiana from the distribution of M. elatior.
description: Published as part of Sekerka, Lukáš, 2020, Commented catalogue of Cassidinae (Coleoptera: Chrysomelidae) of the state of São Paulo, Brazil, with remarks on the collection of Jaro Mráz in the National Museum in Prague, pp. 667-707 in Acta Entomologica Musei Nationalis Pragae (Acta. Ent. Mus. Natl. Pragae) (Acta. Ent. Mus. Natl. Pragae) 60 (2) on page 676, DOI: 10.37520/aemnp.2020.048, http://zenodo.org/record/5178055
Formation of singularities in Yang-Mills equations
Creators: name: Bizoń, Piotr
Publisher: name: arXiv
Year: 2002
Subjects: subject: Mathematical Physics (math-ph)
subject: Analysis of PDEs (math.AP)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 35L67

description: This is a survey of recent studies of singularity formation in solutions of spherically symmetric Yang-Mills equations in higher dimensions. The main attention is focused on five space dimensions because this case exhibits interesting similarities with Einstein's equations in the physical dimension, in particular the dynamics at the threshold of singularity formation shares many features (such as universality, self-similarity, and scaling) with critical phenomena in gravitational collapse. The borderline case of four space dimensions is also analyzed and the formation of singularities is shown to be intimately tied to the existence of the instanton solution.
description: 29 pages, 7 figures
Supplemental Table 5. Effect of CE/BZA on Muscle Global Metabolomics Panel
Creators: name: Marlatt, Kara
name: Lovre, Dragana
name: Beyl, Robbie A.
name: Tate, Chandra R.
name: Hayes, Evelyn K.
name: Burant, Charles F.
name: Ravussin, Eric
name: Mauvais-Jarvis, Franck
Publisher: name: figshare
Year: 2019
Subjects: subject: Health Care
subject: 110306 Endocrinology
subject: FOS: Clinical medicine

description: Effect of conjugated estrogens and bazedoxifene on glucose, energy and lipid metabolism in obese postmenopausal women
Have Commodity Index Funds Increased Price Linkages between Commodities?
Creators: name: Dorfman, Jeffrey H.
name: Karali, Berna
name: Dorfman, Jeffrey H.
name: Karali, Berna
Publisher: name: Unknown
Year: 2012
Subjects: Agricultural marketing

description: To shed more light on the ongoing debate on the role of commodity index funds on recent commodity price spikes, we investigate the linkages between commodity futures prices surrounding the time period of increased index fund activity. We take a Bayesian approach to test stationarity and cointegration of commodity pairs and trios. We find that simple correlation coefficients between futures prices and the probability of nonstationarity of the series have increased over time as the size of index fund trading became larger. However, our cointegration test results show no evidence for an increase in cointegration.
Close-packed dimers on nonorientable surfaces
Creators: name: Lu, Wentao T.
name: Wu, F. Y.
Publisher: name: arXiv
Year: 2001
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Mathematical Physics (math-ph)
subject: Combinatorics (math.CO)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: The problem of enumerating dimers on an M x N net embedded on non-orientable surfaces is considered. We solve both the Moebius strip and Klein bottle problems for all M and N with the aid of imaginary dimer weights. The use of imaginary weights simplifies the analysis, and as a result we obtain new compact solutions in the form of double products. The compact expressions also permit us to establish a general reciprocity theorem.
description: 13 pages, 1 figure, typo corrected to the version published in Phys. Lett. A 293, 235 (2002)
Price Discovery, Volatility Spillovers and Adequacy of Speculation
Creators: name: Bozic, Marin
name: Fortenbery, T. Randall
name: Bozic, Marin
name: Fortenbery, T. Randall
Publisher: name: Unknown
Year: 2012
Subjects: Agricultural marketing

description: We investigate price discovery, volatility spillovers and impacts of speculation in the dairy sector. Examining the time series properties of cheese cash and implied futures price we find that the unit root hypothesis is strongly rejected for cash prices, while unit roots cannot be rejected for nearby futures prices in the framework that carefully controls for rollovers. To explain this result, we built a model that illustrates the time series properties of the nearby futures price series for a futures contract written on a second-order stationary cash series and identified the mean-reverting nonlinear dynamics that will occur at rollovers. Given the time series properties of the cash and futures series we propose an error-correction model using spreads between cash and the second nearby futures instead of the cointegration vector. To account for volatility dynamics we propose an extension of the BEKK variance model that we refer to as GARCH-MEX. That model does not restrict the sign of the additional regressors on the conditional variances, and can easily insure positive-definiteness of the conditional covariance matrix. We find that the flow of information in the mean model is predominantly from futures to cash, while volatility spillovers are bidirectional. It is possible that cash prices that include unfilled bid/offers react differently to increases in volatility in futures prices than sales cash prices, indicating that liquidity in the cash market is reduced with increase in conditional volatility of the futures price. Utilizing GARCH-MEX model we find strong evidence against the speculation on realized volatility of futures prices, bid-ask spread and magnitude of slippage.
ЗАСОБИ КЕРУВАННЯ ЕЛЕКТРОМАГНІТНОЮ ОБСТАНОВКОЮ В УМОВАХ ЇЇ ЧАСОВИХ ТА ПРОСТОРОВИХ ЗМІН
Creators: name: Глива Валентин Анатолійович
name: Ходаковський Олексій Володимирович
name: Тихенко Оксана Миколаївна
name: Панова Олена Василівна
Publisher: name: figshare
Year: 2019
Subjects: Economics

description: Насиченість виробничого та побутового середовища електричним та електронним обладнаннямобумовлює вірогідність виникнення несприятливого впливу на людей і на коректність роботи електронного обладнання з боку джерел електромагнітних полів. Розроблення та впровадження організаційно-технічних заходів з нормалізації електромагнітної обстановки, особливо в умовах її просторових та часових змін, доцільно здійснювати за певним алгоритмом. Розроблено схему керування електромагнітною обстановкою на основі даних електромагнітного моніторингу. Розроблено технологію виготовлення композитних металополімерних електромагнітних екранів. Враховуючи достатню складність технології виготовлення композитних металополімерних матеріалів, автоматизація процесу їх проектування, алгоритмізація розроблення та впровадження організаційно-технічних заходів з електромагнітної безпеки дає змогу скоротити час виконання робіт, підвищити їх ефективність та знизити матеріальні витрати.
Magnetic penetration depth and $T_c$ in superconducting nickelates
Creators: name: Bernardini, F.
name: Olevano, V.
name: Cano, A.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We compute the nominal magnetic penetration depth of $R$NiO$_2$ ($R =$ La, Nd) from first principles calculations and discuss the results in relation to the superconducting $T_c$. We find a marked discrepancy with the well established phenomenology that correlates these two quantities in cuprates (Uemura plot). We also consider the 2D ultrathin limit and estimate the maximum attainable $T_c$ to be $\sim 180$ K according to the Nelson-Kosterliz universal relation between the superfluid density and the transition temperature.
description: 3 pages, 1 table, 2 figures
A causal model for a closed universe
Creators: name: Cataldo, M.
name: del Campo, S.
name: Minning, P.
name: Pena, F.
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study a closed model of a universe filled with viscous fluid and quintessence matter components. The dynamical equations imply that the universe might look like an accelerated flat Friedmann-Robertson-Walker (FRW) universe at low redshift. We consider here dissipative processes which obey a causal thermodynamics. Here, we account for the entropy production via causal dissipative inflation.
description: 9 pages. Accepted for publication in IJMPD
Non-thermal emission from cosmic rays accelerated in HII regions
Creators: name: Padovani, M.
name: Marcowith, A.
name: Sánchez-Monge, Á.
name: Meng, F.
name: Schilke, P.
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Radio observations at metre-centimetre wavelengths shed light on the nature of the emission of HII regions. Usually this category of objects is dominated by thermal radiation produced by ionised hydrogen, namely protons and electrons. However, a number of observational studies have revealed the existence of HII regions with a mixture of thermal and non-thermal radiation. The latter represents a clue as to the presence of relativistic electrons. However, neither the interstellar cosmic-ray electron flux nor the flux of secondary electrons, produced by primary cosmic rays through ionisation processes, is high enough to explain the observed flux densities. We investigate the possibility of accelerating local thermal electrons up to relativistic energies in HII region shocks. We assumed that relativistic electrons can be accelerated through the first-order Fermi acceleration mechanism and we estimated the emerging electron fluxes, the corresponding flux densities, and the spectral indexes. We find flux densities of the same order of magnitude of those observed. In particular, we applied our model to the "deep south" (DS) region of Sagittarius B2 and we succeeded in reproducing the observed flux densities with an accuracy of less than 20% as well as the spectral indexes. The model also gives constraints on magnetic field strength ($0.3-4$ mG), density ($1-9\times10^4$ cm$^{-3}$), and flow velocity in the shock reference frame ($33-50$ km s$^{-1}$) expected in DS. We suggest a mechanism able to accelerate thermal electrons inside HII regions through the first-order Fermi acceleration. The existence of a local source of relativistic electrons can explain the origin of both the observed non-thermal emission and the corresponding spectral indexes.
description: 10 pages, 6 figures, accepted by Astronomy \& Astrophysics
ОПТИМІЗАЦІЯ ТЕХНОЛОГІЇ БЕТЕЛІВ
Creators: name: Краснянський Григорій Юхимович
name: Клапченко Василь Іванович
name: Азнаурян Ірина Олександрівна
name: Кузнецова Ірина Олександрівна
Publisher: name: figshare
Year: 2019
Subjects: Economics

description: Електропровідні бетони (бетели) набувають свого застосування в гідротехнічному, енергетичному і транспортному будівництві, для захисту людей і електронного обладнання від електромагнітних полів. Оптимізація процесу виготовлення бетелівполягає, зокрема, в точному призначеннімінімальної кількості електропровідної добавки, необхідної для отримання матеріалу із заданою електропровідністю. В роботі на основі аналогії з теорією фазових переходів (гіпотези подібності) і теорії протікання отримані рівняння для розрахунку електропровідності бетелів при концентраціях електропровідних добавок нижчих за поріг протікання. Отримані співвідношення допомагають призначати концентрацію добавок у діапазоні 10 ‒ 20% за об’ємом, що забезпечує задану електропровідність матеріалу в межах 10-3 ‒ 10-2 (Ом·м)-1.Для бетелів, що виготовляються методом пресування, розрахунки за пропонованою методикою даютьможливість визначати тиск пресування, що необхідний для досягнення заданої електропровідності. Перевірка теоретичних залежностей показала відповідність розрахованих і виміряних величин з точністю до 15%. В цілому отримані рівняння дають змогу оптимізувати склад і технологію приготування бетелів на основі гідравлічних в'яжучих, що забезпечує зниження вартості за рахунок економії електропровідного компонента і підвищення будівельно-технічних характеристик матеріалу.
Open Letter to the NSF about Gender Data Collection Practices
Creators: name: Báez, Román
name: Timber Burnette
name: Howell, Lars
name: Lynch, Emerson M
name: Kottler, Ezra Jay
name: Lund, Parker K
name: Barts, Nick
name: DeHority, Riley
Publisher: name: figshare
Year: 2021
Subjects: Science Policy

description: An open letter to the National Science Foundation and the National Center for Science and Engineering Statistics asking them how to improve how they collect gender data on their required forms and surveys. Emailed to addressees on May 10, 2021. Posted here as reference material for future demographics survey writers and researchers.
Signed by 413 trans and gender diverse scientists and 2280 scientist allies. Signature list redacted from public posting of letter.
Revisiting the Determinants of Futures Contracts: The Curious Case of Distillers' Dried Grains
Creators: name: Bekkerman, Anton
name: Tejeda, Hernan A.
name: Bekkerman, Anton
name: Tejeda, Hernan A.
Publisher: name: Unknown
Year: 2013
Subjects: Agricultural marketing

description: A futures market for distillers' dried grains (DDGs) was introduced on the Chicago Mercantile Exchange in early 2010, but became inactive only four months after its inception. While many new futures contracts do not develop into high-volume traders, significant interest from DDG cash market participants seemed to indicate that this contract could be successful. This study determines whether factors found in the literature to affect the success of futures contracts may have predicted the ineffectiveness of the DDG contract. We also test the impacts of market participants and the activeness of supporting futures markets, and use the empirical to determine whether the lack of activity in the ethanol futures market may have contributed to the ineffectiveness of the DDG contract. Estimation results indicate that while the existing literature would have predicted a high likelihood of success for a DDG futures contract, accounting for the inactiveness of the ethanol futures market led to the opposite conclusion.
Metrionella calva
Creators: name: Sekerka, Lukáš
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Chrysomelidae
Metrionella
Metrionella calva

description: * Metrionella calva (Boheman, 1855)
 New record. BRAZIL: Sඞඈ Pൺඎඅඈ: without further data, 3 spec., J. Mráz leg. (NMPC, 1 LSPC).
 Distribution. Bolivia, Brazil, Paraguay, and Venezuela. New to São Paulo.
 Remarks. One of the abovementioned specimens is provided with the following identification label: ‘ Metriona | placans m. [hw] | Spaeth det. | n. sp. [hw] | (Metrionella) [hw] | n. subg. [hw] [white printed label with some rows handwritten (hw) by Spaeth]’; however, Spaeth did not mention this specimen in the description of M. placans thus it does not belong to the type series. Moreover, it differs quite conspicuously from M. placans in more convex elytra with a distinct postscutellar hump (absent in M. placans), clypeal grooves deep and enclosing a short triangular field reaching only middle of the clypeus (vs. shallow grooves enclosing a long field reaching almost the base of antennae), and thorax black (vs. mesoventrite with large yellow patch on each side). These characters seem to match quite exactly M. calva, which so far has been reported from Brazil without additional data, despite the fact that SඉൺൾඍΗ (1932b) mentioned that it is not a rare species in the tropical America. However, he did not mention its distribution more precisely.
description: Published as part of Sekerka, Lukáš, 2020, Commented catalogue of Cassidinae (Coleoptera: Chrysomelidae) of the state of São Paulo, Brazil, with remarks on the collection of Jaro Mráz in the National Museum in Prague, pp. 667-707 in Acta Entomologica Musei Nationalis Pragae (Acta. Ent. Mus. Natl. Pragae) (Acta. Ent. Mus. Natl. Pragae) 60 (2) on page 677, DOI: 10.37520/aemnp.2020.048, http://zenodo.org/record/5178055
Field induced magnetic ordering transition in Kondo insulators
Creators: name: Milat, I.
name: Assaad, F. F.
name: Sigrist, M.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We study the 2D Kondo insulators in a uniform magnetic field using quantum Monte Carlo simulations of the particle-hole symmetric Kondo lattice model and a mean field analysis of the Periodic Anderson model. We find that the field induces a transition to an insulating, antiferromagnetically ordered phase with staggered moment in the plane perpendicular to the field. For fields in excess of the quasi-particle gap, corresponding to a metal in a simple band picture of the periodic Anderson model, we find that the metallic phase is unstable towards the spin density wave type ordering for any finite value of the interaction strength. This can be understood as a consequence of the perfect nesting of the particle and hole Fermi surfaces that emerge as the field closes the gap. We propose a phase diagram and investigate the quasi-particle and charge excitations in the magnetic field. We find good agreement between the mean-field and quantum Monte Carlo results.
description: 10 pages, 8 figures (revTeX 4), submited to EPJ B
Microctenochira optata
Creators: name: Sekerka, Lukáš
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Chrysomelidae
Microctenochira
Microctenochira optata

description: * Microctenochira optata (Boheman, 1855)
 Published records. Barueri; Cantareira (Bඈඋඈඐංൾർ 1996); Rio Claro; Saltinho (Lඈඉൾඌ et al. 2016).
 Distribution. Argentina, Bolivia, Brazil (Alagoas, Bahia, Goiás, Mato Grosso, Minas Gerais, Pará, Paraná, Rio de Janeiro, Rio Grande do Sul, Santa Catarina, São Paulo), French Guiana, Paraguay, and Peru.
description: Published as part of Sekerka, Lukáš, 2020, Commented catalogue of Cassidinae (Coleoptera: Chrysomelidae) of the state of São Paulo, Brazil, with remarks on the collection of Jaro Mráz in the National Museum in Prague, pp. 667-707 in Acta Entomologica Musei Nationalis Pragae (Acta. Ent. Mus. Natl. Pragae) (Acta. Ent. Mus. Natl. Pragae) 60 (2) on page 677, DOI: 10.37520/aemnp.2020.048, http://zenodo.org/record/5178055
Microctenochira patruelis
Creators: name: Sekerka, Lukáš
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Chrysomelidae
Microctenochira
Microctenochira patruelis

description: * Microctenochira patruelis (Boheman, 1855)
 New records. BRAZIL: Sඞඈ Pൺඎඅඈ: without further data, 1 spec., J. Mráz leg. (NMPC);Alto da Serra, 5.iii.1912, 1 spec., 16.iii.1912, 1 spec., G. E. Bryant leg. (BMNH).
 Distribution. Brazil (Espírito Santo, Goiás, Minas Gerais, Rio de Janeiro). New to São Paulo.
description: Published as part of Sekerka, Lukáš, 2020, Commented catalogue of Cassidinae (Coleoptera: Chrysomelidae) of the state of São Paulo, Brazil, with remarks on the collection of Jaro Mráz in the National Museum in Prague, pp. 667-707 in Acta Entomologica Musei Nationalis Pragae (Acta. Ent. Mus. Natl. Pragae) (Acta. Ent. Mus. Natl. Pragae) 60 (2) on page 677, DOI: 10.37520/aemnp.2020.048, http://zenodo.org/record/5178055
Entanglement Classification via Neural Network Quantum States
Creators: name: Harney, Cillian
name: Pirandola, Stefano
name: Ferraro, Alessandro
name: Paternostro, Mauro
Publisher: name: arXiv
Year: 2019
Subjects: subject: Quantum Physics (quant-ph)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The task of classifying the entanglement properties of a multipartite quantum state poses a remarkable challenge due to the exponentially increasing number of ways in which quantum systems can share quantum correlations. Tackling such challenge requires a combination of sophisticated theoretical and computational techniques. In this paper we combine machine-learning tools and the theory of quantum entanglement to perform entanglement classification for multipartite qubit systems in pure states. We use a parameterisation of quantum systems using artificial neural networks in a restricted Boltzmann machine (RBM) architecture, known as Neural Network Quantum States (NNS), whose entanglement properties can be deduced via a constrained, reinforcement learning procedure. In this way, Separable Neural Network States (SNNS) can be used to build entanglement witnesses for any target state.
description: 11 pages, 9 figures, RevTeX4
ОЦІНЮВАННЯ МЕТАБОЛІЧНИХ ПОТОКІВ МІСЬКОГО СЕРЕДОВИЩА НА ОСНОВІ ЕКСПЕРТНИХ ЗНАНЬ
Creators: name: Патракеєв Ігор Михайлович
name: Денисюк Богдан Іванович
Publisher: name: figshare
Year: 2019
Subjects: subject: 120201 Building Construction Management and Project Planning
subject: FOS: Civil engineering

description: Якість міського середовища визначається якістю його складових: антропогенного, природного та соціального середовища. Основною проблемою оцінювання стану міського середовища є розрізненість методичних підходів і адекватних інструментів для оцінювання її якісного стану. Пропонується розроблення інтелектуальної інформаційної системи оцінювання потенційних, реальних та втрачених можливостей міського середовища із застосуванням експертних знань в умовах використання нечислової, неточної та неповної інформації для забезпечення управління сталим розвитком міста. Розроблена методика оцінювання потенційних, реальних та втрачених можливостей міського середовища заснована на використанні нечітких логічних рівнянь та дає змогу оцінювати ефективність метаболічних трансформацій кожної з підсистем міського середовища.  
$\varepsilon$-strong simulation of the convex minorants of stable processes and meanders
Creators: name: Cázares, Jorge Ignacio González
name: Mijatović, Aleksandar
name: Bravo, Gerónimo Uribe
Publisher: name: arXiv
Year: 2019
Subjects: subject: Probability (math.PR)
subject: Computation (stat.CO)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences
subject: 60G17, 60G51, 65C05, 65C50

description: Using marked Dirichlet processes we characterise the law of the convex minorant of the meander for a certain class of Lévy processes, which includes subordinated stable and symmetric Lévy processes. We apply this characterisaiton to construct $\varepsilon$-strong simulation ($\varepsilon$SS) algorithms for the convex minorant of stable meanders, the finite dimensional distributions of stable meanders and the convex minorants of weakly stable processes. We prove that the running times of our $\varepsilon$SS algorithms have finite exponential moments. We implement the algorithms in Julia 1.0 (available on GitHub) and present numerical examples supporting our convergence results.
description: 38 pages, 8 figures
Plagiometriona constricta
Creators: name: Sekerka, Lukáš
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Chrysomelidae
Plagiometriona
Plagiometriona constricta

description: * Plagiometriona constricta (Boheman, 1855)
 Published record. Campos do Jordão (Bඈඋඈඐංൾർ 1996).
 Distribution. Brazil (São Paulo).
description: Published as part of Sekerka, Lukáš, 2020, Commented catalogue of Cassidinae (Coleoptera: Chrysomelidae) of the state of São Paulo, Brazil, with remarks on the collection of Jaro Mráz in the National Museum in Prague, pp. 667-707 in Acta Entomologica Musei Nationalis Pragae (Acta. Ent. Mus. Natl. Pragae) (Acta. Ent. Mus. Natl. Pragae) 60 (2) on page 677, DOI: 10.37520/aemnp.2020.048, http://zenodo.org/record/5178055
XMM-Newton observations of the symbiotic recurrent nova T CrB: evolution of X-ray emission during the active phase
Creators: name: Zhekov, Svetozar A.
name: Tomov, Toma V.
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present an analysis of the XMM-Newton observations of the symbiotic recurrent nova T CrB, obtained during its active phase that started in 2015. The XMM-Newton spectra of T CrB have two prominent components: a soft one (0.2 - 0.6 keV), well represented by black-body emission, and a heavily absorbed hard component (2 - 10 keV), well matched by optically-thin plasma emission with high temperature (kT ~ 8 keV). The XMM-Newton observations reveal evolution of the X-ray emission from T CrB in its active phase. Namely, the soft component in its spectrum is decreasing with time while the opposite is true for the hard component. Comparison with data obtained in the quiescent phase shows that the soft component is typical only for the active phase, while the hard component is present in both phases but it is considerably stronger in the quiescent phase. Presence of stochastic variability (flickering) on time-scales of minutes and hours is confirmed both in X-rays and UV (UVM2 filter of the XMM-Newton optical monitor). On the other hand, periodic variability of 6000-6500 s is found for the first time in the soft X-ray emission (0.2 - 0.6 keV) from T CrB. We associate this periodic variability with the rotational period of the white dwarf in this symbiotic binary.
description: Accepted for publication in MNRAS; 11 pages, 7 figures, 2 tables
Classes of Terminating Logic Programs
Creators: name: Pedreschi, Dino
name: Ruggieri, Salvatore
name: Smaus, Jan-Georg
Publisher: name: arXiv
Year: 2001
Subjects: subject: Logic in Computer Science (cs.LO)
subject: Programming Languages (cs.PL)
subject: FOS: Computer and information sciences
subject: D.1.6; D.2.4; F.3.1

description: Termination of logic programs depends critically on the selection rule, i.e. the rule that determines which atom is selected in each resolution step. In this article, we classify programs (and queries) according to the selection rules for which they terminate. This is a survey and unified view on different approaches in the literature. For each class, we present a sufficient, for most classes even necessary, criterion for determining that a program is in that class. We study six classes: a program strongly terminates if it terminates for all selection rules; a program input terminates if it terminates for selection rules which only select atoms that are sufficiently instantiated in their input positions, so that these arguments do not get instantiated any further by the unification; a program local delay terminates if it terminates for local selection rules which only select atoms that are bounded w.r.t. an appropriate level mapping; a program left-terminates if it terminates for the usual left-to-right selection rule; a program exists-terminates if there exists a selection rule for which it terminates; finally, a program has bounded nondeterminism if it only has finitely many refutations. We propose a semantics-preserving transformation from programs with bounded nondeterminism into strongly terminating programs. Moreover, by unifying different formalisms and making appropriate assumptions, we are able to establish a formal hierarchy between the different classes.
description: 50 pages. The following mistake was corrected: In figure 5, the first clause for insert was insert([],X,[X])
Brief 2019 Adviescommissie Limburgs Digitaal Erfgoed
Creators: name: Berg, Mijke Harst-Van Den
name: Helms, Remko
name: Helmus, Wilbert
name: Hermans, Martijn
name: Van De Leemput, Dirk
name: Van Meer, Marieke
name: Welters, Sandra
name: Wiggers, Lita
Publisher: name: Zenodo
Year: 2018
Subjects: Digitaal Erfgoed

description: In deze eerste adviesbrief bepleit de Adviescommissie Limburgs Digitaal Erfgoed een nieuwe aanpak van digitalisering van Limburgs erfgoed. Resultaten van de Adviescommissie zijn bestemd voor Limburgse erfgoedorganisaties en -verenigingen, maar ook voor gemeenten en voor de Provincie. Deze brief is daarom gericht aan Limburgse organisaties die aan erfgoedbehoud doen en aan Gedeputeerde en Provinciale Staten van de Provincie Limburg. De commissie pleit voor betere ondersteuning aan de kleine (vrijwilligers)musea en heemkunde- en historische verenigingen. Ze adviseert daarom een nieuw provinciaal steunpunt voor kleine organisaties voor digitaal erfgoed. De adviesnota bevat acht andere aanbevelingen die ingaan op de noodzaak tot onderlinge samenwerking, hergebruik van technologie en mogelijkheden tot vernieuwing.