cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Tuning the doping of epitaxial graphene on a conventional semiconductor via substrate surface reconstruction
Creators: name: Galbiati, Miriam
name: Persichetti, Luca
name: Gori, Paola
name: Pulci, Olivia
name: Bianchi, Marco
name: Di Gaspare, Luciana
name: Tersoff, Jerry
name: Coletti, Camilla
name: Hofmann, Philip
name: De Seta, Monica
name: Camilli, Luca
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Combining scanning tunneling microscopy and angle-resolved photoemission spectroscopy, we demonstrate how to tune the doping of epitaxial graphene from p to n by exploiting the structural changes that occur spontaneously on the Ge surface upon thermal annealing. Furthermore, using first principle calculations we build a model that successfully reproduces the experimental observations. Since the ability to modify graphene electronic properties is of fundamental importance when it comes to applications, our results provide an important contribution towards the integration of graphene with conventional semiconductors.
The Nickel Mass Distribution of Stripped-Envelope Supernovae: Implications for Additional Power Sources
Creators: name: Afsariardchi, Niloufar
name: Drout, Maria R.
name: Khatami, David
name: Matzner, Christopher D.
name: Moon, Dae-Sik
name: Ni, Yuan Qi
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We perform a systematic study of the $^{56}$Ni mass ($M_{\rm Ni}$) of 27 stripped envelope supernovae (SESNe) by modeling their light-curve tails, highlighting that use of ``Arnett's rule'' overestimates $M_{\rm Ni}$ for SESN by a factor of $\sim$2. Recently, \citet{Khatami2019} presented a new model relating the peak time ($t_{\rm p}$) and luminosity ($L_{\rm p}$) of a radioactive-powered SN to its $M_{\rm Ni}$ that addresses several limitations of Arnett-like models, but depends on a dimensionless parameter, $β$. Using observed $t_{\rm p}$, $L_{\rm p}$, and tail-measured $M_{\rm Ni}$ values for 27 SESN, we observationally calibrate $β$ for the first time. Despite scatter, we demonstrate that the model of \citet{Khatami2019} with empirically-calibrated $β$ values provides significantly improved measurements of $M_{\rm Ni}$ when only photospheric data is available. However, these observationally-constrained $β$ values are systematically lower than those inferred from numerical simulations, primarily because the observed sample has significantly higher (0.2-0.4 dex) $L_{\rm p}$ for a given $M_{\rm Ni}$. While effects due to composition, mixing, and asymmetry can increase $L_{\rm p}$ current models cannot explain the systematically low $β$ values. However, the discrepancy can be alleviated if $\sim$7--50\% of $L_{\rm p}$ for the observed sample originates from sources other than $^{56}$Ni. Either shock cooling or magnetar spin-down could provide the requisite luminosity. Finally, we find that even with our improved measurements, the $M_{\rm Ni}$ values of SESN are still a factor of $\sim$3 larger than those of hydrogen-rich Type II SN, indicating that these supernovae are inherently different in terms of their progenitor initial mass distributions or explosion mechanisms.
description: 27 pages, 12 figures, accepted for publication in ApJ
Quantum tricriticality of chiral-coherent phase in quantum Rabi triangle
Creators: name: Zhang, Yu-Yu
name: Hu, Zi-Xiang
name: Fu, Libin
name: Luo, Hong-Gang
name: Pu, Han
name: Zhang, Xue-Feng
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The interplay of interactions, symmetries and gauge fields usually leads to intriguing quantum many-body phases. To explore the nature of emerging phases, we study a quantum Rabi triangle system as an elementary building block for synthesizing an artificial magnetic field. We develop an analytical approach to study the rich phase diagram and the associated quantum criticality. Of particular interest is the emergence of a chiral-coherent phase, which breaks both the $\mathbb{Z}_2$ and the chiral symmetry. In this chiral phase, photons flow unidirectionally and the chirality can be tuned by the artificial gauge field, exhibiting a signature of broken time-reversal symmetry. The finite-frequency scaling analysis further confirms the associated phase transition to be in the universality class of the Dicke model. This model can simulate a broad range of physical phenomena of light-matter coupling systems, and may have an application in future developments of various quantum information technologies.
description: 5pages,4figures
О недавно раскрытой фреске с Деисусом в церкви Успения Богородицы в Лабово
Creators: name: Захарова Анна Владимировна
Publisher: name: Вестник сектора древнерусского искусства
Year: 2020
Subjects: Византийская живопись
фрески
деисус
Албания
Лабово
Охрид.

description: В статье предлагается атрибуция фрески с изображением Деисуса, недавно раскрытой на хорах церкви Успения Богородицы в Лабово (Албания). С помощью сравнительного стилистического анализа автор показывает, что это изображение наиболее близко произведениям второй четверти — середины XI в., таким как фрески в храмах Панагии тон Халкеон в Салониках, Св. Леонтия в Водоче и собора Св. Софии в Охриде. Поскольку время строительства храма в Лабово до сих пор дискутируется, атрибуция фрески позволяет подтвердить предлагавшуюся ранее другими исследователями датировку постройки X или, более вероятно, первой половиной XI в.
ECONOMICS OF ALTERNATIVE STOCKING DENSITIES FOR DIRECT-SEEDED CENTRAL MICHIGAN ALFALFA PASTURES
Creators: name: Wachenheim, Cheryl J.
name: Black, J. Roy
name: Schelegal, M.L.
name: Rust, Steven R.
name: Wachenheim, Cheryl J.
name: Black, J. Roy
name: Schelegal, M.L.
name: Rust, Steven R.
Publisher: name: Unknown
Year: 1999
Subjects: Crop Production/Industries

description: A framework which permits estimation of economically optimal stocking rates for alternative economic parameters and alfalfa forage availability was developed and applied to a controlled grazing experiment conducted with Holstein steers (243 kg) placed on direct seeded alfalfa pastures in Central Michigan. Responses of ADG to alternative levels of forage availability per standard livestock unit (FA) were summarized by a quadratic function and the associated gains/ha were calculated. The ADG decreased as standard stocking rate (SSR; SLU/ha) increased except for the combination of the lowest observed SSR and highest FA, where ADG was curvilinear as SSR increased. The trend for gain/ha was curvilinear for all FA. The SSR which maximized gain/ha increased with FA and was greater than that which maximized ADG. Net returns to fixed resources(NRFR)/ha ($/ha)were calculated for alternative SSR and the economically optimal SSR were identified under various levels of herbage mass (kg/d). The SSR's which maximized NRFR were between the SSR's which maximized ADG and gain/ha. The magnitude of the sale price discount for heavier weight calves (slide) influenced the economically optimal SSR and the sensitivity of net return to SSR. The economically optimal SSR increased as slide increased because animals stocked under higher SSR weighed less off pasture and therefore received less price discount.
Bose-Einstein condensate-mediated superconductivity in graphene
Creators: name: Sun, M.
name: Parafilo, A. V.
name: Villegas, K. H. A.
name: Kovalev, V. M.
name: Savenko, I. G.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We propose a mechanism for robust BCS-like superconductivity in graphene placed in the vicinity of a Bose-Einstein condensate. Electrons in the graphene interact with the excitations above the condensate, called Bogoliubov quasiparticles (or bogolons). It turns out that bogolon-pair-mediated interaction allows us to surpass the long-standing problem of the vanishing density of states of particles with a linear spectrum. This results in a dramatic enhancement of the superconducting properties of graphene while keeping its relativistic dispersion. We study the behavior of the superconducting gap and calculate critical temperatures in cases with single-bogolon and bogolon-pair-mediated pairing processes, accounting for the complex band structure of graphene. We also compare the critical temperature of the superconducting transition with the BKT temperature.
Scalar sigma meson at finite temperature in nonlocal quark model
Creators: name: Blaschke, D.
name: Kalinovsky, Yu. L.
name: Radzhabov, A. E.
name: Volkov, M. K.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Properties and temperature behavior of pi and sigma bound states are studied in the framework of the nonlocal model with a separable interaction kernel based on the quark Dyson-Schwinger and the meson Bethe-Salpeter equations. M_pi(T), f_pi(T), M_sigma(T) and Gamma_{sigma -> pi pi}(T) are considered above and below the deconfinement and chiral restoration transitions.
description: 8 pages, 2 figures, Talk at the Round Table Discussion "Searching for the mixed phase of strongly interacting matter at the JINR Nuclotron", JINR, Dubna, July 7 - 9, 2005. Submitted to Phys.Part.Nucl.Lett
Simulations of a mortality plateau in the sexual Penna model for biological ageing
Creators: name: Schwämmle, Veit
name: de Oliveira, Suzana M.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: FOS: Biological sciences

description: The Penna model is a strategy to simulate the genetic dynamics of age-structured populations, in which the individuals genomes are represented by bit-strings. It provides a simple metaphor for the evolutionary process in terms of the mutation accumulation theory. In its original version, an individual dies due to inherited diseases when its current number of accumulated mutations, n, reaches a threshold value, T. Since the number of accumulated diseases increases with age, the probability to die is zero for very young ages (n < T) and equals 1 for the old ones (n >= T). Here, instead of using a step function to determine the genetic death age, we test several other functions that may or may not slightly increase the death probability at young ages (n < T), but that decreases this probability at old ones. Our purpose is to study the oldest old effect, that is, a plateau in the mortality curves at advanced ages. Imposing certain conditions, it has been possible to obtain a clear plateau using the Penna model. However, a more realistic one appears when a modified version, that keeps the population size fixed without fluctuations, is used. We also find a relation between the birth rate, the age-structure of the population and the death probability.
description: submitted to Phys. Rev. E
Geometric Phase in Entangled Bipartite Systems
Creators: name: Cui, H. T.
name: Wang, L. C.
name: Yi, X. X.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The geometric phase (GP) for bipartite systems in transverse external magnetic fields is investigated in this paper. Two different situations have been studied. We first consider two non-interacting particles. The results show that because of entanglement, the geometric phase is very different from that of the non-entangled case. When the initial state is a Werner state, the geometric phase is, in general, zero and moreover the singularity of the geometric phase may appear with a proper evolution time. We next study the geometric phase when intra-couplings appear and choose Werner states as the initial states to entail this discussion. The results show that unlike our first case, the absolute value of the GP is not zero, and attains its maximum when the rescaled coupling constant $J$ is less than 1. The effect of inhomogeneity of the magnetic field is also discussed.
description: 5 pages and to be published in Euro. Phys. J. D
COST OF FRESH MARKET SWEET BELL PEPPER PRODUCTION IN MACOMB COUNTY, MICHIGAN
Creators: name: Dartt, Barbara
name: Black, J. Roy
name: Stevens, Hannah
name: Morrone, Vicki
name: Dartt, Barbara
name: Black, J. Roy
name: Stevens, Hannah
name: Morrone, Vicki
Publisher: name: Unknown
Year: 2002
Subjects: Crop Production/Industries

description: This bulletin represents a tool that can help producers, consultants, educators, and agribusinesses working with producers estimate costs of production and expected profit based on "typical" sweet bell pepper management strategies found in Macomb County, Michigan. The tools and techniques these producers use do not vary substantially from typical practices found in other regions of the state. The budget included in this bulletin will allow users to revise inputs based on their management strategies and calculate their expected cost and profit. This flexibility provides a decision aid to search for systems that generate higher net returns to the farm's resource base.
Aging behavior of spin glasses under bond and temperature perturbations from laser illumination
Creators: name: Arai, Ryuta
name: komatsu, katsuyoshi
name: Sato, Tetsuya
Publisher: name: arXiv
Year: 2006
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We have studied the nonequilibrium dynamics of spin glasses subjected to bond perturbation, which was based on the direct change in the spin-spin interaction $ΔJ$, using photo illumination in addition to temperature change $ΔT$. Differences in time-dependent magnetization are observed between that under $ΔT+ΔJ$ and $ΔT$ perturbations with the same $ΔT$. This differences shows the contribution of $ΔJ$ to spin-glass dynamics through the decrease in the overlap length. That is, the overlap length $L_{ΔT+ΔJ}$ under $ΔT+ΔJ$ perturbation is less than $L_{ΔT}$ under $ΔT$ perturbation. Furthermore, we observe the crossover between weakly and strongly perturbed regimes under bond cycling accompanied by temperature cycling. These effects of bond perturbation strongly indicates the existence of both chaos and the overlap length.
description: 8page, 7figure
Изображения новгородских святителей в «келье Иоанна» Владычной палаты в Великом Новгороде: время и обстоятельства появления
Creators: name: Царевская Татьяна Юрьевна
Publisher: name: Вестник сектора древнерусского искусства
Year: 2020
Subjects: Монументальная живопись
фреска
святитель Никита Новгородский
святитель Иоанн Новгородский
Владычная палата
иконография
Великий Новгород
древнерусское искусство
реставрация.

description: В статье обосновывается реконструкция состава парного изображения новгородских святителей — Никиты и Иоанна на откосах ниши с композицией «София Премудрость Божия» в «келье Иоанна» Владычной палаты Новгородского кремля, уточняются время и обстоятельства сложения данной иконографической формулы. Программный смысл этих изображений раскрывается через послание новгородского архиепископа Пимена, доставленное в 1563 г. царю Ивану Васильевичу IV в расположение русской армии перед взятием Полоцка. Опираясь на существующие традиции книжности, новгородский архипастырь призвал царя низложить еретиков-латинян и иконоборцев-лютеран. Предстоящее сражение, по его мысли, велось за православную веру «Греческого закона», и в этой борьбе знаменем истинной веры выступал знаменательный для Новгорода образ Софии Премудрости Божия. Сопровождающие его новгородские чудотворцы, чьи мощи покоятся в храме Святой Софии, выступали гарантами незыблемости православия.
Scaling properties of a spatial one-particle density-matrix entropy in many-body localized systems
Creators: name: Hopjan, Miroslav
name: Heidrich-Meisner, Fabian
name: Alba, Vincenzo
Publisher: name: arXiv
Year: 2020
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Quantum Gases (cond-mat.quant-gas)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We investigate a spatial subsystem entropy extracted from the one-particle density matrix (OPDM) in one-dimensional disordered interacting fermions that host a many-body localized (MBL) phase. Deep in the putative MBL regime, this OPDM entropy exhibits the salient features of localization, despite not being a proper entanglement measure. We numerically show that the OPDM entropy of the eigenstates obeys an area law. Similar to the von-Neumann entropy, the OPDM entropy grows logarithmically with time after a quantum quench, albeit with a different prefactor. Both these features survive at moderately large interactions and well towards the transition into the ergodic phase. The computational cost to calculate the OPDM entropy scales only polynomially with the system size, suggesting that the OPDM provides a promising starting point for developing diagnostic tools for MBL in simulations and experiments.
description: 11 pages, 8 figures. Published version. Data shown in the manuscript is partially available as ancillary files
DAIRY GRAZING FINANCES IN MICHIGAN AND WISCONSIN, 1999
Creators: name: Nott, Sherrill B.
name: Kriegl, Tom
name: Bivens, William M.
name: Nott, Sherrill B.
name: Kriegl, Tom
name: Bivens, William M.
Publisher: name: Unknown
Year: 2000
Subjects: Agricultural Finance
Livestock Production/Industries

description: The purpose of this paper is to demonstrate possible outcomes and problems of merging farm data sets from multiple states in order to build a statistically sound body of financial information that will help individual farmers analyze their own situations. This paper is in support of a grant titled "Regional/Multi-State Interpretation of Small Farm Financial Data" recently funded by USDA - IFAFS - Farm Efficiency and Profitability. Financial data sets came from dairy farms using management intensive grazing (MIG) strategies during 1999. There were 12 farms from Michigan and 19 farms from Wisconsin. Finpack and Finansum were used to process the data from all farms. Definitions and formulas are not given in this paper as they can be found in Finpack users' guides and manuals. The averages for all 31 farms are given in Tables 1 through 10 plus Figures 1 and 2. The averages for farms with less than 70 milk cows are given in Tables 11 through 20. Averages for farms with over 70 cows are in Tables 21 through 30. Towards the end of the paper is a discussion of the strengths and weaknesses of the data set and what should be considered as more states' data are merged into the grant project. The last page, Table 32, gives some income and expense categories on a per cow basis which may be useful in doing an individual farm comparative analysis.
Stellungnahme des Ökumenischen Arbeitskreises evangelischer und katholische Theologen zu Grundfragen zum Amt in der Kirche
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 23 Nr. 3 (1974): Ökumenische Rundschau, Band 23, Heft 3
The homology of the Milnor fiber for classical braid groups
Creators: name: Callegaro, Filippo
Publisher: name: arXiv
Year: 2005
Subjects: subject: Algebraic Topology (math.AT)
subject: FOS: Mathematics
subject: 20F36, 20J06, 32S55

description: In this paper we compute the homology of the braid groups, with coefficients in the module Z[q^+-1] given by the ring of Laurent polynomials with integer coefficients and where the action of the braid group is defined by mapping each generator of the standard presentation to multiplication by -q. The homology thus computed is isomorphic to the homology with constant coefficients of the Milnor fiber of the discriminantal singularity.
description: This is the version published by Algebraic & Geometric Topology on 14 November 2006
An evaluation of highway stormwater runoff quality in the G.V.R.D.
Creators: name: Onwumere, George Chukwudi
Publisher: name: University of British Columbia
Year: 2009

description: In the Greater Vancouver Regional District (G.V.R.D.), highway stormwater runoff from bridge decks along the Trans-Canada Highway (#1) in Burnaby and the New Westminster Highway (#91, east-west connector) in Richmond was assessed between 1995 and 1996. Discrete and composite samples of highway stormwater runoff, road dirt, surface soil sediment and grass clipping samples were collected manually from both sites. The stormwater runoff samples were analysed for total suspended solids (T.S.S.), chromium (Cr), nickel (Ni), cadmium (Cd), copper (Cu), iron (Fe), zinc (Zn), manganese (Mn), lead (Pb), calcium (Ca), oil/grease, pH and electrical conductivity (EC). The road dirt, soil sediment and grass clipping samples were analysed only for their metal content. All the parameters in highway stormwater runoff showed differences in seasonal concentration patterns except for Cu and Mn at both sites. However, these differences were not statistically significant at the 95% confidence level. Although concentrations of most pollutants were higher in the winter, LC50 daphnia bioassays were non-toxic. The non-winter Comp "A" runoff samples, on the other hand, had 70% and 57% survival rates after 24 and 48 hours respectively. Most contaminant concentrations exceeded the maximum allowable concentrations (MAC) set for drinking water or freshwater aquatic life protection. Between the two sites, the Burnaby site had higher rainfall amounts and runoff coefficients, thereby generating higher T.S.S., metal and oil/grease concentrations/loadings than the Richmond site. The Burnaby site grass drainage ditch was fairly efficient in its pollutant removal effectiveness which ranged from 48% for Cu to 77% for T.S.S. There were statistically significant differences in pollutant removal efficiencies for all the parameters except for Mn at the 95% confidence level. Pollutant concentrations forecasting, using single regression equations with individual environmental variable, yielded reasonably good predictions for T.S.S., Fe, and Mn at the Burnaby site; and T.S.S., and Ca at the Richmond site. Comparison between discrete sample and flow composite data indicated a significant difference only in the concentration of T.S.S. at the Burnaby site.
О времени постройки первого каменного собора Алексеевского Зачатьевского монастыря: опыт автокоррекции
Creators: name: Беляев Леонид Андреевич
Publisher: name: Вестник сектора древнерусского искусства
Year: 2020
Subjects: Архитектурная археология
монастырская археология
анализ источников
иерархия источников
архитектура Москвы XVI в.

description: Одной из проблем датирования памятников по археологическим материалам является их привязанность к письменной истории и ее источникам. Эта связь не всегда помогает, часто она становится помехой в установлении независимой даты. Внутри самой археологии есть еще один источник, отрицательно влияющий на складывание независимой хронологии. Это привычная иерархия дат, согласно которой более ранние даты кажутся исследователю более желательными. Датировка каменного собора Алексеевского (позже Зачатьевского) монастыря служит хорошим примером этого механизма. Изначально он был датирован авторами концом XVI в. (вторая половина 1580-х гг.). Через 15 лет критика собственных построений позволила нам прийти к выводу о том, что храм был построен между концом 1510-х — концом 1540-х гг. Это также делает вероятной его идентификацию с церковью Алексея Человека Божия, упомянутой в известном списке построек итальянского архитектора Алевиза Фрязина.
2000 ANNUAL AGRICULTURAL OUTLOOK
Creators: name: Hilker, James H.
name: Creed, Nancy
name: Hilker, James H.
name: Creed, Nancy
Publisher: name: Unknown
Year: 2000
Subjects: Farm Management

description: Compilation of 2000 outlook articles written by faculty in the Department of Agricultural Economics at Michigan State University covering issues such as the economy, farm policy, commodity prices and production, farm income, and farm input supplies.
О хронологии каменного строительства в кашинском Клобуковом монастыре во второй половине XVII — первой трети XVIII века
Creators: name: Яганов Андрей Викторович
Publisher: name: Вестник сектора древнерусского искусства
Year: 2020
Subjects: Город Кашин
Никольский Клобуков монастырь и его история
русская архитектура второй половины XVII — первой трети XVIII в.
корпоративное строительство
натурные исследования памятника

description: В статье, на примере истории Троицкого (Никольского) собора Клобукова монастыря, предпринята попытка обозначить причины и хронологию возрождения каменного строительства в Кашине во второй половине XVII в. С привлечением некоторых архивных и библиографических источников, натурных наблюдений и исследований удалось несколько скорректировать общепринятую датировку памятника, обозначить основные этапы реконструкции ансамбля Клобукова монастыря во второй половине XVII — первой трети XVIII в.
Food Sector Transformation and Standards in Zambia: Smallholder Farmer Participation and Growth in the Dairy Sector
Creators: name: Neven, David
name: Katjiuongua, Hikuepi
name: Adjosoediro, Ingrid
name: Reardon, Thomas
name: Chuzu, Pia Nwanza
name: Tembo, Gelson
name: Ndiyoi, Mukelabai
name: Neven, David
name: Katjiuongua, Hikuepi
name: Adjosoediro, Ingrid
name: Reardon, Thomas
name: Chuzu, Pia Nwanza
name: Tembo, Gelson
name: Ndiyoi, Mukelabai
Publisher: name: Unknown
Year: 2006
Subjects: Livestock Production/Industries

description: Market liberalization in Zambia has led to a rapid and fundamental transformation of its dairy sector. Mainly through foreign direct investment and international partnerships, a new formal dairy sector, characterized by institutional, organizational and technological innovation, emerged from the ashes of abandoned government projects. Sensing the development opportunity that arose from an untapped milk supply potential in Zambia's traditional smallholder livestock production and a growing milk demand from the newly emerging formal dairy processing sector, numerous donor-funded smallholder dairy farmer support programs emerged. At the same time, in order to protect its domestic market as well as to be in a better position to enter demanding export markets, stakeholders from the private, public and NGO sector have recently joined forces to develop technical dairy product standards for Zambia based on the CODEX.
Low-Frequency Gravitational Radiation from Coalescing Massive Black Holes
Creators: name: Sesana, A.
name: Haardt, F.
name: Madau, P.
name: Volonteri, M.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We compute the expected low-frequency gravitational wave signal from coalescing massive black hole (MBH) binaries at the center of galaxies. We follow the merging history of halos and associated holes via cosmological Monte Carlo realizations of the merger hierarchy from early times to the present in a LCDM cosmology. MBHs get incorporated through a series of mergers into larger and larger halos, sink to the centre owing to dynamical friction, accrete a fraction of the gas in the merger remnant to become more massive, and form a binary system. Stellar dynamical processes dominates the orbital evolution of the binary at large separations, while gravitational wave emission takes over at small radii, causing the final coalescence of the system. We discuss the observability of inspiraling MBH binaries by a low-frequency gravitational wave experiment such as the planned Laser Interferometer Space Antenna (LISA), discriminating between resolvable sources and unresolved confusion noise. Over a 3-year observing period LISA should resolve this GWB into discrete sources, detecting ~90 individual events above a S/N=5 confidence level, while expected confusion noise is well below planned LISA capabilities.
description: 6 pages, 4 figures, proceeding of "5th LISA Symposium", Noordwijk, 12-15 July 2004, to appear as special issue article in Classical and Quantum Gravity
Seeing past words: Testing the cross-modal capabilities of pretrained V&L models on counting tasks
Creators: name: Parcalabescu, Letitia
name: Gatt, Albert
name: Frank, Anette
name: Calixto, Iacer
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences
subject: I.2.7; I.2.10
subject: 68Txx

description: We investigate the reasoning ability of pretrained vision and language (V&L) models in two tasks that require multimodal integration: (1) discriminating a correct image-sentence pair from an incorrect one, and (2) counting entities in an image. We evaluate three pretrained V&L models on these tasks: ViLBERT, ViLBERT 12-in-1 and LXMERT, in zero-shot and finetuned settings. Our results show that models solve task (1) very well, as expected, since all models are pretrained on task (1). However, none of the pretrained V&L models is able to adequately solve task (2), our counting probe, and they cannot generalise to out-of-distribution quantities. We propose a number of explanations for these findings: LXMERT (and to some extent ViLBERT 12-in-1) show some evidence of catastrophic forgetting on task (1). Concerning our results on the counting probe, we find evidence that all models are impacted by dataset bias, and also fail to individuate entities in the visual input. While a selling point of pretrained V&L models is their ability to solve complex tasks, our findings suggest that understanding their reasoning and grounding capabilities requires more targeted investigations on specific phenomena.
description: Paper accepted for publication at MMSR 2021; 13 pages, 3 figures, 7 Tables
Spin unrestricted linear scaling electronic structure theory and its application to magnetic carbon doped BN nanotubes
Creators: name: Xiang, H. J.
name: Liang, W. Z.
name: Yang, Jinlong
name: Hou, J. G.
name: Zhu, Qingshi
Publisher: name: arXiv
Year: 2005
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We present an extension of density matrix based linear scaling electronic structure theory to incorporate spin degrees of freedom. When the spin multiplicity of the system can be predetermined, the generalization of the existing linear scaling methods to spin unrestricted cases is straightforward. However, without calculations it is hard to determine the spin multiplicity of some complex systems, such as, many magnetic nanostuctures, some inorganic or bioinorganic molecules. Here we give a general prescription to obtain the spin-unrestricted ground state of open shell systems. Our methods are implemented into the linear scaling trace-correcting density matrix purification algorithm. The numerical atomic orbital basis, rather than the commonly adopted Gaussian basis functions is used. The test systems include O2 molecule, and magnetic carbon doped BN(5,5) and BN(7,6) nanotubes. Using the newly developed method, we find the magnetic moments in carbon doped BN nanotubes couple antiferromagnetically with each other. Our results suggest that the linear scaling spin-unrestricted trace-correcting purification method is very powerful to treat large magnetic systems.
description: 9 pages 4 figures, to appear in The Journal of Chemical Physics
INTRODUCCION A LA ESTADISTICA PARA ECONOMISTAS AGRICOLAS USANDO EL SPSS
Creators: name: Swinton, Scott M.
name: Labarta, Ricardo A.
name: Swinton, Scott M.
name: Labarta, Ricardo A.
Publisher: name: Unknown
Year: 2003
Subjects: Research Methods/ Statistical Methods

description: Este documento es un manual de estadística para economistas aplicados que usan el programa estadístico SPSS. Está diseñado para ser usado dentro de un taller de capacitación de una semana, y tiene como propósito familiarizar a profesionales de la investigación con procedimientos estadísticos básicos, necesarios para realizar análisis socioeconómicos a datos que provienen de encuestas. Este documento es una introducción para los usuarios en la creación y manipulación de las bases de datos, en la estadística exploratoria univariada y bivariada, en la prueba de hipótesis y en la regresión lineal y logística. El texto del documento se apoya en 19 cajas de texto que ilustran como cada procedimiento puede ser aplicado a un grupo de datos provenientes de una encuesta de finca.
Из опыта изучения изразцового декора церкви Николы Мокрого в Ярославле
Creators: name: Баранова Светлана Измайловна
Publisher: name: Вестник сектора древнерусского искусства
Year: 2020
Subjects: Изразец
копия
церковь Николы Мокрого
Ярославль
закраска изразцов
реставрация

description: Статья посвящена малоизвестному фрагменту изразцового декора церкви Николы Мокрого в Ярославле, украсившему храм в первый строительный период (1665–1672). Закраска и замена редких терракотовых изразцов в ходе многочисленных реставраций и ремонтов памятника изменили типологию, а в ряде случаев и изображение на лицевых пластинах. Обращение к истории их создания, сделанное на основе ранее неизвестных материалов из архива А.В.Филиппова, дает новую информацию о редком архитектурном приеме в декорировании изразцами древнерусских памятников.
Semileptonic Decay of $B_c$ to $η_c$ and $J/ψ$ on the Light Front
Creators: name: Tang, Shuo
name: Jia, Shaoyang
name: Maris, Pieter
name: Vary, James P.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the semileptonic decay of the $B_c (0^-)$ to charmonia through the bottom-to-charm-quark electroweak current in the framework of basis light-front quantization. Explicitly, we calculate the weak transition form factors for processes of $B_c$ decaying into $η_c$ or $J/ψ$ based on the corresponding initial and final valence light-front wave functions both obtained from the basis light-front quantization. We also present the corresponding differential decay width and branching ratios, as well as the branching ratios for decays into the $η_c'$ and the $ψ'$. We observe unphysical frame dependence of the calculated form factors, which is attributed to only including the valence light-front wave functions. Based on the analysis of current component, we propose a preferred set of frames to calculate these form factors.
Реконструкция утраченного сборника «типа Анастасия» по московским и парижским фрагментам (ГИМ, Син. греч. 73, Paris, BnF, Coisl. 28 и Suppl. gr. 1156)
Creators: name: Добрынина Элина Николаевна
Publisher: name: Вестник сектора древнерусского искусства
Year: 2020
Subjects: Греческая палеография
греческие рукописи
византийское искусство книги
орнамент
декорация переходного периода
письмо «типа Анастасия»
пергаменные фрагменты
Менандр Протектор
Обретение Св. Креста и гвоздей.

description: Статья посвящена исследованию ныне утраченного минускульного сборника на основе трех отождествленных фрагментов, хранящихся в собраниях Парижа и Москвы. Сборник дополняет круг рукописей «типа Анастасия» рубежа IX–X вв. и стоит в ряду памятников переходного периода византийского искусства книги. Фрагмент этого сборника в рукописи ГИМ, Син. греч. 73 содержит ранее неизвестный список «Легенды об обретении Св. Креста и гвоздей» Менандра Протектора. Анализ палеографии и художественного оформления реконструированного сборника позволяет отнести обнаруженный отрывок к числу старших списков Легенды.
Thermal Operator Representation of Finite-Temperature Amplitudes in the Presence of Chemical Potential
Creators: name: Inui, M.
name: Kohyama, H.
name: Niegawa, A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In a recent paper [Phys. Rev. D {\bf 72}, 085006 (2005)], Brandt {\em et al}. deduced the thermal operator representation for a thermal $N$-point amplitude, both in the imaginary-time and real-time formalisms. In the case when a chemical potential present, however, the representation is not as simple as in the case with vanishing chemical potential. We propose a much simpler and transparent representation for the case of non-zero chemical potential.
description: 8 pages
FINANCIAL PROFITABILITY OF MALI-SUD BAS-FOND RICE PRODUCTION SYSTEMS
Creators: name: Dimithe, Georges
name: Bernsten, Richard H.
name: Staatz, John M.
name: Coulibaly, B.S.
name: Mariko, Dramane
name: Kergna, Alpha O.
name: Dimithe, Georges
name: Bernsten, Richard H.
name: Staatz, John M.
name: Coulibaly, B.S.
name: Mariko, Dramane
name: Kergna, Alpha O.
Publisher: name: Unknown
Year: 2000
Subjects: Agricultural Finance
Crop Production/Industries

description: The high costs of rehabilitating and/or expanding government-managed irrigated schemes in Mali (Office du Niger) has prompted policy-makers and researchers to explore the potential for the underdeveloped farmer-managed bas-fond to contribute to ensure an adequate rice supply and increase rural households' incomes. Because little is known about nas-fond rice production in Mali, this paper analyzes its financial profitability based on data collected from a random sample of 221 farmers. Data analysis revealed that there are numerous rice production systems in the bas-fond. Budget analysis showed that the four most common bas-fond production systems yield higher returns than the opportunity cost of labor and they are more profitable than the main upland crops competing with rice for farmers labor (cotton, sorghum/millet, and maize). Within a given bas-fond system, however, profitability varies considerably across farms.
Древнейшая подвесная лицевая пелена чудотворной иконы Богоматери Тихвинской и прославление монастырской святыни
Creators: name: Шалина Ирина Александровна
Publisher: name: Вестник сектора древнерусского искусства
Year: 2020
Subjects: Василий III
Успенский Тихвинский монастырь
чудотворная икона Богоматери Тихвинской
древнерусское искусство XVI века
древнерусское лицевое шитье
пелена
иконография
мастерская Соломонии Сабуровой.

description: Статья посвящена древнейшей подвесной шитой пелене, подвешиваемой к чудотворной иконе Богоматери Тихвинской, происхождение которой удается связать с Успенским собором Большого монастыря. Архивные источники позволяют не только подтвердить это, но и реконструировать первоначальный облик пелены и проследить историю ее бытования и реставрации. Художественный стиль шитья сближает его с произведениями, созданными в кремлевской мастерской великой княгини Соломонии Сабуровой, что дает возможность предполагать, что пелена была вышита к моменту освящения нового каменного храма в Тихвине в 1515 г., построенного по велению и на средства Василия III. Скорее всего, создание этого произведения, как и устройство церкви-реликвария для Тихвинской иконы, было связано с молением княжеской семьи о чадородии. С этого времени святыня монастыря получает общерусское почитание.
Finite density effects on chiral symmetry breaking in a magnetic field in 2+1 dimensions from holography
Creators: name: Rodrigues, Diego M.
name: Li, Danning
name: Capossoli, Eduardo Folco
name: Boschi-Filho, Henrique
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this work we study finite density effects in spontaneous chiral symmetry breaking as well as chiral phase transition under the influence of a background magnetic field in $ 2+1 $ dimensions. For this purpose, we use an improved holographic softwall model based on an interpolated dilaton profile. We find inverse magnetic catalysis at finite density. We observe that the chiral condensate decreases as the density increases, and the two effects (addition of magnetic field and chemical potential) sum up decreasing even more the chiral condensate.
description: V3: 17 pages, 3 figures. Text improved. Typos corrected. New references added. Results unchanged. This version matches the published one in PRD
DYNAMIC PORTFOLIO MANAGEMENT UNDER RISK AND SUBSISTENCE CONSTRAINTS IN DEVELOPING COUNTRIES
Creators: name: Zimmerman, Frederic
name: Carter, Michael R.
name: Zimmerman, Frederic
name: Carter, Michael R.
Publisher: name: Unknown
Year: 1996
Subjects: Risk and Uncertainty

description: This paper presents a model that endogenizes asset-based risk- coping in an environment of unmediated risk and subsistence constraints. It uses an individually-rational, stochastic dynamic programming model to explore intertemporal portfolio decisions in an environment in which both yield risk and endogenous asses-price risk exist. The results show that agents pursue one the three distinct investment strategies, depending on their initial wealth levels. Agents who are too poor to support subsistence at a sustainable level eventually stock out, driving their asset base to zero. Agents who have more than a certain threshold level of highly productive assets continue to accumulate those assets. Agents who fall somewhere in between, with an intermediate level of assets, adjust their portfolios to maintain both their yield risk and their price risk at a tolerable level. The paper compares the portfolio management strategies of the intermediate group ("poor") and the wealthy group. It is found that the poor pursue strategies that involve smoother income but less smooth consumption than is the case for the wealthy. This result at once provides a theoretical explanation for recent empirical findings of a positive correlation between wealth and rates of return on portfolios in South India, and at the same time suggests that a common explanation for this phenomenon--that of decreasing relative risk aversion--is probably inaccurate. Note: You must zoom 150 to 200% in Acrobat reader to view small text, however the paper will print legibly.
Entanglement system, Casimir energy and black hole
Creators: name: Myung, Yun Soo
Publisher: name: arXiv
Year: 2005
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We investigate the connection between the entanglement system in Minkowski spacetime and the black hole using the scaling analysis. Here we show that the entanglement system satisfies the Bekenstein entropy bound. Even though the entropies of two systems are the same form, the entanglement energy is different from the black hole energy. Introducing the Casimir energy of the vacuum energy fluctuations rather than the entanglement energy, it shows a feature of the black hole energy. Hence the Casimir energy is more close to the black hole than the entanglement energy. Finally, we find that the entanglement system behaves like the black hole if the gravitational effects are included properly.
description: 11 pages, no figure, version to appear in PLB
DEVELOPMENT AND THE ENVIRONMENT IN ASIA: A SURVEY OF RECENT LITERATURE
Creators: name: Coxhead, Ian A.
name: Coxhead, Ian A.
Publisher: name: Unknown
Year: 2002
Subjects: Environmental Economics and Policy

description: Economic growth and environmental damage are associated, but the relationship is neither linear nor even monotonic. This is clearly seen in the diverse experiences of tropical Asian economies over recent decades. The nature of the growth-environment link depends on the changing composition of production and on growth-related changes in techniques and environmental policies; the enforcement of property rights over natural resources and over air and water quality is another important element. Moreover, environmental and economic policies interact: in effect, every economic policy that affects resource allocation is a de facto environmental measure. One important implication is that the environmental consequences of major policy shifts, such as the 'globalization' of many tropical Asian economies since about 1980, have been profound. The analytical literature on growth and the environment in Asia tends to agree that environmental damage is costly to regional economies, and has begun to identify and quantify some of the many causal linkages now recognized between economic development and the valuation and use of environmental and natural resource assets.
Embroidering the New Dynasty: Marfa Ivanovna Romanova and Her Tapestry “The Praise of the Mother of God”
Creators: name: Thyrêt Isolde
Publisher: name: Вестник сектора древнерусского искусства
Year: 2020
Subjects: Marfa Ivanovna Romanova
Irina Godunova
Saint Irina
Saint Marfa
Old Russian embroidery
altar cloths
Fedor Ivanovich
Romanov dynasty.

description: Marfa Ivanovna’s tapestry “The Praise of the Mother of God” provides insight into the farreaching role that the mother of the first Romanov tsar played in the construction of the image of Russia’s new ruling dynasty within the traditional religious framework that defined Muscovite tsardom. The tapestry showcases Marfa’s exquisite ability to use the visual medium of liturgical embroidery to invoke continuities between the traditional perception of Russian rulers and that of the new Romanov tsar. By placing Mikhail Fedorovich’s name saint into the position of the name saint of Irina Godunova, who is seen in a tapestry of the same theme produced by Irina Godunova’s workshop, Marfa Ivanovna asserted that her son followed in the footsteps of previous Russian rulers whose power was legitimized by divine grace. A reference to the Old Testament figure Joseph in the inscription next to Mikhail Fedorovich’s name saint underscored this point even further. But Marfa Ivanovna not only provided the support that Irina Godunova had lent to her brother Boris’s ascendance to the throne. In Marfa Ivanovna’s tapestry Marfa’s name saint, dressed in monastic garb, joins the choir of Old Testament figures in a liturgical round dance in honor of the greatest intercessors of all, the Mother of God. The implied intimate connection between Marfa Ivanovna and the divine, which underscored the value of the tsar mother’s intercession, is expressed in an inscription next to Saint Marfa. Marfa Ivanovna cleverly combined traditional notions of both royal mothers and tsaritsa-nuns acting as intercessors for the Muscovite tsars in order to ascribe to herself an essential role at the early seventeenth-century Muscovite court.
A Review and Comparative Study on Probabilistic Object Detection in Autonomous Driving
Creators: name: Feng, Di
name: Harakeh, Ali
name: Waslander, Steven
name: Dietmayer, Klaus
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: Capturing uncertainty in object detection is indispensable for safe autonomous driving. In recent years, deep learning has become the de-facto approach for object detection, and many probabilistic object detectors have been proposed. However, there is no summary on uncertainty estimation in deep object detection, and existing methods are not only built with different network architectures and uncertainty estimation methods, but also evaluated on different datasets with a wide range of evaluation metrics. As a result, a comparison among methods remains challenging, as does the selection of a model that best suits a particular application. This paper aims to alleviate this problem by providing a review and comparative study on existing probabilistic object detection methods for autonomous driving applications. First, we provide an overview of generic uncertainty estimation in deep learning, and then systematically survey existing methods and evaluation metrics for probabilistic object detection. Next, we present a strict comparative study for probabilistic object detection based on an image detector and three public autonomous driving datasets. Finally, we present a discussion of the remaining challenges and future works. Code has been made available at https://github.com/asharakeh/pod_compare.git
description: Accepted in the IEEE Transactions on Intelligent Transportation Systems