cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Current status of Japanese detectors
Creators: name: Tatsumi, Daisuke
name: Takahashi, Ryutaro
name: Arai, Koji
name: Nakagawa, Noriyasu
name: Agatsuma, Kazuhiro
name: Yamazaki, Toshitaka
name: Fukushima, Mitsuhiro
name: Fujimoto, Masa-Katsu
name: Takamori, Akiteru
name: Bertolini, Alessandro
name: Sannibale, Virginio
name: DeSalvo, Riccardo
name: Marka, Szabolcs
name: Ando, Masaki
name: Tsubono, Kimio
name: Akutsu, Tomomi
name: Yamamoto, Kazuhiro
name: Ishitsuka, Hideki
name: Uchiyama, Takashi
name: Miyoki, Shinji
name: Ohashi, Masatake
name: Kuroda, Kazuaki
name: Awaya, Norichika
name: Kanda, Nobuyuki
name: Araya, Akito
name: Telada, Souichi
name: Tomaru, Takayuki
name: Haruyama, Tomiyoshi
name: Yamamoto, Akira
name: Sato, Nobuaki
name: Suzuki, Toshitaka
name: Shintomi, Takakazu
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Current status of TAMA and CLIO detectors in Japan is reported in this article. These two interferometric gravitational-wave detectors are being developed for the large cryogenic gravitational wave telescope (LCGT) which is a future plan for detecting gravitational wave signals at least once per year. TAMA300 is being upgraded to improve the sensitivity in low frequency region after the last observation experiment in 2004. To reduce the seismic noises, we are installing new seismic isolation system, which is called TAMA Seismic Attenuation System, for the four test masses. We confirmed stable mass locks of a cavity and improvements of length and angular fluctuations by using two SASs. We are currently optimizing the performance of the third and fourth SASs. We continue TAMA300 operation and R&D studies for LCGT. Next data taking in the summer of 2007 is planned. CLIO is a 100-m baseline length prototype detector for LCGT to investigate interferometer performance in cryogenic condition. The key features of CLIO are that it locates Kamioka underground site for low seismic noise level, and adopts cryogenic Sapphire mirrors for low thermal noise level. The first operation of the cryogenic interferometer was successfully demonstrated in February of 2006. Current sensitivity at room temperature is close to the target sensitivity within a factor of 4. Several observation experiments at room temperature have been done. Once the displacement noise reaches at thermal noise level of room temperature, its improvement by cooling test mass mirrors should be demonstrated.
description: 6 pages, 5 figures, Proceedings of GWDAW-11
Comparison of Cupola Furnace and Blast Furnace Slags with Respect to Possibilities of Their Utilization
Creators: name: Pribulová, A.
name: Futáš, P.
name: Petrík, J.
name: Pokusová, M.
name: Brzeziński, M.
name: Jakubski, J.
Publisher: name: Institute of Metallurgy and Materials Science of Polish Academy of Sciences
Year: 2018
Subjects: blast furnace slag
cupola furnace slag
microstructure of slag
melting temperature
chemical composition

description: Blast furnace and cupola furnace are furnace aggregates used for pig iron and cast iron production. Both furnace aggregates work on very similar principles: they use coke as the fuel, charge goes from the top to down, the gases flow against it, etc. Their construction is very similar (cupola furnace is usually much smaller) and the structures of pig iron and cast iron are very similar too. Small differences between cast iron and pig iron are only in carbon and silicon content. The slags from blast furnace and cupola furnace are very similar in chemical composition, but blast furnace slag has a very widespread use in civil engineering, primarily in road construction, concrete and cement production, and in other industries, but the cupola furnace slag utilization is minimal. The contribution analyzes identical and different properties of both kinds of slags, and attempts to explain the differences in their uses. They are compared by the contribution of the blast furnace slag cooled in water and on air, and cupola furnace slag cooled on air and granulated in water. Their chemical composition, basicity, hydraulicity, melting temperature and surface were compared to explain the differences in their utilization.
Hartree-Fock calculations of a finite inhomogeneous quantum wire
Creators: name: Qian, Jiang
name: Halperin, Bertrand I.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We use the Hartree-Fock method to study an interacting one-dimensional electron system on a finite wire, partially depleted at the center by a smooth potential barrier. A uniform one-Tesla Zeeman field is applied throughout the system. We find that with the increase in the potential barrier, the low density electrons under it go from a non-magnetic state to an antiferromagnetic state, and then to a state with a well-localized spin-aligned region isolated by two antiferromagnetic regions from the high density leads. At this final stage, in response to a continuously increasing barrier potential, the system undergoes a series of abrupt density changes, corresponding to the successive expulsion of a single electron from the spin-aligned region under the barrier. Motivated by the recent momentum-resolved tunneling experiments in a parallel wire geometry, we also compute the momentum resolved tunneling matrix elements. Our calculations suggest that the eigenstates being expelled are spatially localized, consistent with the experimental observations. However, additional mechanisms are needed to account for the experimentally observed large spectral weight at near $k=0$ in the tunneling matrix elements.
description: 10 pages, 14 figures
2MASS Reveals a Large Intrinsic Fraction of BALQSOs
Creators: name: Dai, Xinyu
name: Shankar, Francesco
name: Sivakoff, Gregory R.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The intrinsic fraction of broad absorption line quasars (BALQSOs) is important in constraining geometric and evolutionary models of quasars. We present the fraction of BALQSOs in 2MASS detected quasars within the SDSS DR3 sample in the redshift range of 1.7 < z < 4.38. The fraction of BALQSOs is 40.4^{+3.4}_{-3.3}% in the 2MASS 99% database K_s band completeness sample, and 38.5^{+1.7}_{-1.7}% in the larger 2MASS sample extending below the completeness limit. These fractions are significantly higher than the 26% reported in the optical bands for the same parent sample. We also present the fraction of BALQSOs as functions of apparent magnitudes, absolute magnitudes, and redshift in the 2MASS and SDSS bands. The 2MASS fractions are consistently higher than the SDSS fractions in every comparison, and the BALQSO fractions steadily increase with wavelength from the SDSS u to the 2MASS K_s bands. Furthermore, the i - K_s color distributions of BALQSOs and non-BALQSOs indicate that BALQSOs are redder than non-BALQSOs, with a K-S test probability of 2e-12. These results are consistent with the spectral difference between BALQSOs and non-BALQSOs including both the absorption troughs and dust extinction in BALQSOs, which leads to significant selection biases against BALQSOs in the optical bands. Using a simple simulation incorporating the luminosity function of quasars and the amount of obscuration for BALQSOs, we simultaneously fit the BALQSO fractions in the SDSS and 2MASS bands. We obtain a true BALQSO fraction of 43\pm2% for luminous quasars (M_{K_s} \lesssim -30.1 mag).
description: 20 pages, 6 figures, accepted by ApJ
Revised metallicity classes for low-mass stars: dwarfs (dM), subdwarfs (sdM), extreme subdwarfs (esdM), and ultra subdwarfs (usdM)
Creators: name: Lepine, Sebastien
name: Rich, R. Michael
name: Shara, Michael M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The current classification system of M stars on the main sequence distinguishes three metallicity classes (dwarfs - dM, subdwarfs - sdM, and extreme subdwarfs - esdM). The spectroscopic definition of these classes is based on the relative strength of prominent CaH and TiO molecular absorption bands near 7000A, as quantified by three spectroscopic indices (CaH2, CaH3, and TiO5). We re-examine this classification system in light of our ongoing spectroscopic survey of stars with proper motion μ> 0.45 "/yr, which has increased the census of spectroscopically identified metal-poor M stars to over 400 objects. Kinematic separation of disk dwarfs and halo subdwarfs suggest deficiencies in the current classification system. Observations of common proper motion doubles indicates that the current dM/sdM and sdM/esdM boundaries in the [TiO5,CaH2+CaH3] index plane do not follow iso-metallicity contours, leaving some binaries inappropriately classified as dM+sdM or sdM+esdM. We propose a revision of the classification system based on an empirical calibration of the TiO/CaH ratio for stars of near solar metallicity. We introduce the parameter ζ_{TiO/CaH} which quantifies the weakening of the TiO bandstrength due to metallicity effect, with values ranging from ζ_{TiO/CaH}=1 for stars of near-solar metallicity to ζ_{TiO/CaH}~0 for the most metal-poor (and TiO depleted) subdwarfs. We redefine the metallicity classes based on the value of the parameter ζ_{TiO/CaH}; and refine the scheme by introducing an additional class of ultra subdwarfs (usdM). We introduce sequences of sdM, esdM, and usdM stars to be used as formal classification standards.
description: 15 pages, accepted for publication in the Astrophysical Journal
Artifacts description and cosmogenic modelling from In situ-produced 10Be and 26Al indirect dating of Elarmékora Earlier Stone Age artefacts: first attempt in a savannah forest mosaic in the middle Ogooué valley, Gabon
Creators: name: Braucher, R.
name: Oslisly, R.
name: Mesfin, I.
name: Ntoutoume, P. P.
name: Team, ASTER
Publisher: name: The Royal Society
Year: 2022
Subjects: Environmental Science

description: Discovered in 1987 by R. Oslisly, Elarmékora is a high terrace that, today, is situated 175 m above the Ogooué River in the historical complex of Elarmékora, attached to the Lopé National Park in Gabon, a World Heritage site since 2007. The site yielded a small lithic assemblage, including mainly cobble artefacts embedded within the 1-m thick alluvial material. Based on geomorphological and palaeoclimatological criteria, the preliminary dating suggested an age of 400 ka. However, Elarmékora could be a key site for Atlantic Central Africa if this lithic industry can be dated absolutely. In 2018 and 2019, two field trips were organized to collect surface samples as well as samples in vertical depth profiles with the aim of measuring their in situ-produced cosmogenic nuclide (10Be and 26Al) content. Results suggest a surface abandonment between 730 and 620 ka ago representing a minimum age for the cobble artefacts. Concurrently, technological reappraisal of the artefacts suggests an atypical lithic industry which should, for the moment, be considered as ‘undiagnostic’ Earlier Stone Age. This age bracketing may be compared with a similar age range obtained for prehistoric occupations in Angola using the same approach. If confirmed, this age will place Elarmékora among the oldest evidence for the presence of hominins in western Central Africa and raises the question of a ‘West Side Story’ to early human dispersals in Africa.This article is part of the theme issue ‘The role of tropical rainforests in the deep human past’.
Towards heavy double-gluon hybrid mesons with exotic quantum numbers in QCD sum rules
Creators: name: Lian, Ding-Kun
name: Wang, Qi-Nan
name: Chen, Xu-Liang
name: Yang, Peng-Fei
name: Chen, Wei
name: Chen, Hua-Xing
Publisher: name: arXiv
Year: 2024
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The double-gluon hybrid meson configuration was recently proposed and investigated within QCD sum rules. In this talk, we discuss the color structures of the double-gluon hybrid meson and construct current operators with exotic quantum numbers $J^{PC}=1^{-+}$ and $2^{+-}$ for two of the structures. In the framework of QCD sum rules, we consider the condensates up to dimension-8 at the leading order of $α_{s}$ for both charmonium and the bottomonium systems. The results indicate that the masses of the $1^{-+}$ and $2^{+-}$ charmonium double-gluon hybrid mesons are approximately $6.1-7.2$ GeV and $6.3-6.4$ GeV, respectively. As for the bottomonium systems, their masses fall within the range of $13.7-14.3$ GeV and $12.6-13.3$ GeV for the $1^{-+}$ and $2^{+-}$ channels, respectively. Additionally, the charmonium hybrids could be produced in the radiative decays of bottomonium mesons in BelleII experiment.
description: 9 pages, 5 figures, 4 tables. Proceedings article for QCD24: 27th Hih-Energy Physics International Conference in Quantum Chromodynamis. arXiv admin note: substantial text overlap with arXiv:2403.18696
O Fitofaladoiro: Nomes e usos das plantas na nosa tradición oral. Experiencias en centros educativos
Creators: name: Cerviño Gómez, C.
name: SanLeón, D.G.
Publisher: name: Zenodo
Year: 2019

description: Presentación no simposio anual organizado polo Instituto da Lingua Galega en colaboración co Consello da Cultura Galega. Edición 2019: "Lingua patrimonio e coñecemento tradicional". Video final da presentación: https://youtu.be/Wkj4_yd20ys
Card shuffling and diophantine approximation
Creators: name: Angel, Omer
name: Peres, Yuval
name: Wilson, David B.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60J10 (Primary) 60C05 (Secondary)

description: The ``overlapping-cycles shuffle'' mixes a deck of $n$ cards by moving either the $n$th card or the $(n-k)$th card to the top of the deck, with probability half each. We determine the spectral gap for the location of a single card, which, as a function of $k$ and $n$, has surprising behavior. For example, suppose $k$ is the closest integer to $αn$ for a fixed real $α\in(0,1)$. Then for rational $α$ the spectral gap is $Θ(n^{-2})$, while for poorly approximable irrational numbers $α$, such as the reciprocal of the golden ratio, the spectral gap is $Θ(n^{-3/2})$.
description: Published in at http://dx.doi.org/10.1214/07-AAP484 the Annals of Applied Probability (http://www.imstat.org/aap/) by the Institute of Mathematical Statistics (http://www.imstat.org)
UM ESTUDO DA EFICIÊNCIA INFORMACIONAL DO MERCADO ACIONÁRIO BRASILEIRO
Creators: name: Sampaio Franco De Lima, Gerlando Augusto
name: Yamamoto, Marina Mitiyo
name: Lima, Iran Siqueira
name: Malacrida, Mara Jane Contrera
Publisher: name: Revista de Informação Contábil
Year: 2008
Subjects: Teoria Positiva da Contabilidade; Hipótese de Mercados Eficientes; Estudos de Eventos.

description: Este trabalho tem como objetivo verificar se a informação fornecida ao mercado de capitais sobre a intenção de emissão de American Depositary Receipts (ADRs) por empresas brasileiras gera retornos anormais nos preços das ações dessas companhias. Espera-se que a emissão, no mercado americano, resulte no aumento da visibilidade da empresa e negociabilidade de seus papéis, como a quantidade de informação divulgada. Tem-se como referencial teórico desse estudo a Teoria Positiva da Contabilidade e a Hipótese de Mercados Eficientes. Para a pesquisa empírica realizou-se um estudo de evento com uma amostra de 19 empresas brasileiras que fazem parte da Bolsa de Valores Americana, tendo como base os pressupostos de MacKinlay. A partir do estudo de Dombrown, Rodriguez e Sirmans, uma regressão não paramétrica foi utilizada para se obterem os parâmetros do modelo de mercado do estudo de evento. Os resultados do estudo de evento demonstraram a valorização nos preços das ações das empresas, ainda que não imediatamente ao fato de ser conhecida a intenção da emissão. Palavras-chave: Teoria Positiva da Contabilidade; Hipótese de Mercados Eficientes; Estudos de Eventos.
description: Revista de Informação Contábil, v. 2, n. 1 (2008): RIC/UFPE - Revista de Informação Contábil
Dorothy Knowles's rural landscape painting : modernity and tradition in urban Saskatchewan
Creators: name: Skidmore, Colleen Marie
Publisher: name: University of British Columbia
Year: 2010

description: Between 1955 and 1965, Saskatchewan painter Dorothy Knowles established her main category and style of production as "painterly" representation of rural landscape. The literature to date attributes the emergence of this practice to Knowles's encounter with Clement Greenberg, the patriarch of formalist criticism, at the 1962 Emma Lake Artists' Workshop. In fact, critic Andrew Hudson has called Knowles's work "the most important art to emerge out of Greenberg's workshop." Herein lies the problem central to this thesis: how did a woman artist negotiate (with critical and market success) the gender constraints of her artistic context while addressing additional social and artistic issues by means of rural landscape painting? Previous examinations have constructed Knowles's landscape work as an autonomous, "feminine" and artist-centred activity. These constructions are dependent on Greenberg's formalist doctrine and charged with gendered precepts that have masked, if not negated, the paintings' social roots. However, little work has been done to revise this reading. Therefore, a deconstruction of Greenberg's gendered formalist language is undertaken in Chapter I. Evidence drawn from Greenberg's written and oral comments about women artists and critics demonstrates that formalist doctrine delineated masculine and feminine roles and styles, and consequently denied women's production a place in serious art practice. Historical circumstances are then reconstructed to initialize a rereading of the elements that shaped the emergence and meaning of Knowles's rural landscapes. Two factors are documented: the urbanization of Saskatchewan in the 1950s with attendant transitions in art practice, as demonstrated by paintings and reviews produced at that time; and the literary and painting traditions of the myth of the Canadian prairie as a Garden of Eden, taken up in the idiom and content of Knowles's work. This material indicates that Knowles's rural landscape painting was not simply a result of formal manipulation of the medium nor of Greenberg's perceptive insight into the artist's "creative" inclinations. Knowles's early rural landscape painting is found to have registered seemingly contradictory and yet intermingled social desires for both an urban modernity and traditional rural prairie values.
Higher Nilpotent Analogues of A-infinity Structure
Creators: name: Dolotin, V.
name: Morozov, A.
name: Shakirov, Sh.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Geometric Topology (math.GT)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: Higher nilpotent analogues of the $A-\infty$-structure are explicitly defined on arbitrary simplicial complexes, generalizing explicit construction of /hep-th/0704.2609. These structures are associated with the higher nilpotent differential $d_n$, satisfying $d_n^n =0$, which is naturally defined on triangulated manifolds (tetrahedral lattices). The deformation $D_n = (I + ε_n) d_n (I + ε_n)^{-1}$ is defined with the help of the $n$-versions of discrete exterior product $\wedge_n$ and the $K_n$-operator.
description: preliminary version, essential corrections made
Ανάπτυξη παλιρροϊκού μοντέλου για τη Μεσόγειο Θάλασσα με αφομοίωση αλτιμετρικών δεδομένων και δεδομένων από παλιρροϊκούς σταθμούς σε υδροδυναμικά μοντέλα:
Creators: name: Παπαζαχαρίου, Δημήτρης Ζ.
Publisher: name: Aristotle University of Thessaloniki
Year: 2013
Subjects: Παλιρροϊκά μοντέλα
Δορυφορική αλτιμετρία
Παλιρροϊκά δεδομένα
Μεσόγειος Θάλασσα
Tidal models
Satellite altimetry
Tide gauge data
Mediterranean Sea

description: Σκοπός της διδακτορικής αυτής διατριβής είναι η ανάπτυξη ενός παλιρροϊκού μοντέλου (MEDI10) για τη Μεσόγειο Θάλασσα με αφομοίωση αλτιμετρικών δεδομένων και δεδομένων από παλιρροϊκούς σταθμούς σε υδροδυναμικά μοντέλα. Το παλιρροϊκό αυτό μοντέλο, με ανάλυση , αναπτύχθηκε χρησιμοποιώντας το λογισμικό OTISoo. Στο μοντέλο αυτό αφομοιώθηκαν αλτιμετρικά δεδομένα του Topex/Poseidon και δεδομένα από 76 παλιρροϊκούς σταθμούς. Η διδακτορική αυτή διατριβή αποτελείται από δέκα κεφάλαια. Στο 1ο κεφάλαιο γίνεται μία ιστορική αναδρομή σχετικά με τις παλίρροιες και στο 2ο κεφάλαιο περιγράφεται η περιοχή μελέτης που είναι η Μεσόγειος Θάλασσα. Το 3ο κεφάλαιο αναφέρεται στη δορυφορική αλτιμετρία και στους αλτιμετρικούς δορυφόρους. Στο 4ο κεφάλαιο γίνεται μία αναλυτική αναφορά στις παλίρροιες, ενώ στο 5ο κεφάλαιο παρουσιάζονται τα σύγχρονα μοντέλα παλίρροιας. Στο 6ο κεφάλαιο περιγράφεται το πακέτο προγραμματισμού OTISoo και στο 7ο κεφάλαιο η μοντελοποίηση των παλιρροιών με το OTISoo. Το 8ο κεφάλαιο ασχολείται με την ανάλυση των παλιρροϊκών δεδομένων, ενώ στο 9ο κεφάλαιο περιγράφεται αναλυτικά η ανάπτυξη του μοντέλου MEDI10. Τέλος, στο 10ο κεφάλαιο παρουσιάζονται τα τελικά συμπεράσματα και συγκεκριμένες προτάσεις για μελλοντικό υπολογισμό ενός νέου παλιρροϊκού μοντέλου για τη Μεσόγειο Θάλασσα.
description: The objective of this PhD thesis is the development of a tidal model (MEDI10) for the Mediterranean Sea using assimilation of altimetry data and tide gauge data into hydrodynamic models. This tidal model, with resolution , was developed using software OTISoo. Altimetry data of Topex/Poseidon and 76 tide gauge data were assimilated into this model. This PhD thesis consists of ten chapters. The 1st chapter deals with the historical retrospect about tides and in the 2nd chapter is described the Mediterranean Sea, which is the study area. The 3rd chapter refers to satellite altimetry, the 4th chapter deals comprehensively with tides, while in the 5th chapter are presented the modern tidal models. In the 6th and 7th chapters are described the programming package OTISoo and the modeling of tides using OTISoo respectively. The 8th chapter deals with the analysis of the tide gauge data, while in the 9th chapter is described the development of the model MEDI10. Finally, the 10th chapter refers to the conclusions and suggestions for a future calculation of a new tidal model for the Mediterranean Sea.
Unsupervised identification of surgical robotic actions from small non homogeneous datasets
Creators: name: Meli, Daniele
name: Fiorini, Paolo
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Robot-assisted surgery is an established clinical practice. The automatic identification of surgical actions is needed for a range of applications, including performance assessment of trainees and surgical process modeling for autonomous execution and monitoring. However, supervised action identification is not feasible, due to the burden of manually annotating recordings of potentially complex and long surgical executions. Moreover, often few example executions of a surgical procedure can be recorded. This paper proposes a novel fast algorithm for unsupervised identification of surgical actions in a standard surgical training task, the ring transfer, executed with da Vinci Research Kit. Exploiting kinematic and semantic visual features automatically extracted from a very limited dataset of executions, we are able to significantly outperform state-of-the-art results on a dataset of non-expert executions (58\% vs. 24\% F1-score), and improve performance in the presence of noise, short actions and non-homogeneous workflows, i.e. non repetitive action sequences.
GESTÃO DE CUSTOS E FORMAÇÃO DE PREÇOS EM EMPRESAS DE PRODUÇÃO POR ENCOMENDA: ESTUDOS DE CASOS
Creators: name: Souza, Antônio Artur De
name: Avelar, Ewerton Alex
name: Boina, Terence Machado
Publisher: name: Revista de Informação Contábil
Year: 2008
Subjects: Produção por encomenda; Gestão de custos; Formação de preços; Estimação de custos; Análise de variância de custos.

description: Este trabalho apresenta os resultados de uma pesquisa, de caráter exploratório e qualitativo, que visou estudar a gestão de custos e o processo de formação de preços (FP) em empresas de produção por encomenda (EPEs). Foram realizados dois estudos de casos em ferramentarias da região metropolitana de Belo Horizonte/MG, durante os anos de 2006 e 2007. Observou-se que, nas empresas estudadas, utilizam-se metodologias de custeio distintas. Diversos fatores, internos e externos, influenciam os processos de estimação de custos (EC) e de FP nessas empresas. Destaca-se ainda, que outros aspectos da gestão de custos, tais como a análise de variância de custos (AVC) e a utilização das informações históricas de custos são pouco exploradas nas empresas pesquisadas. Pode-se dizer que um investimento maior das empresas na gestão de custos poderia aperfeiçoar significantemente a tomada de decisão, principalmente as de preço, pois estariam embasadas em informações mais acuradas. Palavras-chave: Produção por encomenda; Gestão de custos; Formação de preços; Estimação de custos; Análise de variância de custos.
description: Revista de Informação Contábil, v. 2, n. 1 (2008): RIC/UFPE - Revista de Informação Contábil
Continuous and discontinuous phase transitions and partial synchronization in stochastic three-state oscillators
Creators: name: Wood, Kevin
name: Broeck, C. Van den
name: Kawai, R.
name: Lindenberg, Katja
Publisher: name: arXiv
Year: 2007
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We investigate both continuous (second-order) and discontinuous (first-order) transitions to macroscopic synchronization within a single class of discrete, stochastic (globally) phase-coupled oscillators. We provide analytical and numerical evidence that the continuity of the transition depends on the coupling coefficients and, in some nonuniform populations, on the degree of quenched disorder. Hence, in a relatively simple setting this class of models exhibits the qualitative behaviors characteristic of a variety of considerably more complicated models. In addition, we study the microscopic basis of synchronization above threshold and detail the counterintuitive subtleties relating measurements of time averaged frequencies and mean field oscillations. Most notably, we observe a state of suprathreshold partial synchronization in which time-averaged frequency measurements from individual oscillators do not correspond to the frequency of macroscopic oscillations observed in the population.
Additional file 4 of Preclinical development of a long-acting trivalent bispecific nanobody targeting IL-5 for the treatment of eosinophilic asthma
Creators: name: Ma, Linlin
name: Zhu, Min
name: Li, Guanghui
name: Gai, Junwei
name: Li, Yanfei
name: Gu, Huaiyu
name: Qiao, Peng
name: Li, Xiaofei
name: Ji, Weiwei
name: Zhao, Rui
name: Wu, Yue
name: Wan, Yakun
Publisher: name: figshare
Year: 2022
Subjects: subject: Medicine
subject: Molecular Biology
subject: Neuroscience
subject: Pharmacology
subject: Biotechnology
subject: Immunology
subject: FOS: Clinical medicine
subject: Cancer
subject: Infectious Diseases
subject: FOS: Health sciences

description: Additional file 4: Fig. S4. The inhibitory effect of IL-5 single domain Nbs, homobivalent Nbs and heterobivalent Nb on TF-1-cell proliferation.
A General Sparse Linear System Solver and Its Application in OpenFOAM
Creators: name: Manguoglu, Murat
Publisher: name: Zenodo
Year: 2012
Subjects: scalability results, new algorithm

description: Solution of large sparse linear systems is frequently the most time consuming operation in computational fluid dynamics simulations.
 Improving the scalability of this operation is likely to have significant impact on the overall scalability of application. In this white paper we show scalability results up to a thousand cores for a new algorithm devised to solve large sparse linear systems. We have also compared pure MPI vs. MPI-OpenMP hybrid implementation of the same algorithm.
Modelling chemical reactions using semiconductor quantum dots
Creators: name: Smirnov, A. Yu.
name: Savel'ev, S.
name: Mourokh, L. G.
name: Nori, Franco
Publisher: name: arXiv
Year: 2007
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We propose using semiconductor quantum dots for a simulation of chemical reactions as electrons are redistributed among such artificial atoms. We show that it is possible to achieve various reaction regimes and obtain different reaction products by varying the speed of voltage changes applied to the gates forming quantum dots. Considering the simplest possible reaction, $H_2+H\to H+H_2$, we show how the necessary initial state can be obtained and what voltage pulses should be applied to achieve a desirable final product. Our calculations have been performed using the Pechukas gas approach, which can be extended for more complicated reactions.
$uvby-H_β$ CCD photometry and membership segregation of the open cluster NGC2682 (M67)
Creators: name: Balaguer-Núñez, L.
name: Galadí-Enríquez, D.
name: Jordi, C.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Following deep astrometric and photometric study of the cluster NGC2682 (M67), we are able to accurately determine its fundamental parameters. Being an old and rich cluster, M67 is a relevant object for the analysis of the Galactic disk evolution. M67 is well studied but the lack of a wide and deep Stromgren photometric study makes our results worthwhile. The brightest stars of the open cluster M67 were used as uvby-Hbeta standard stars in our studies of NGC1817 and NGC2548, and the extension of the field covered, as well as the amount of observations, allowed to obtain the best set of Stromgren data ever published for this cluster. We discuss the results of our CCD uvby-Hbeta intermediate-band photometry, covering an area of about 50'x50' down to V 19. Moreover, a complete membership segregation based on astrometric and photometric criteria is obtained. The photometric analysis of a selected sample of stars yields a reddening value of E(b-y)= 0.03\pm0.03, a distance modulus of V_0-M_V= 9.7\pm0.2 and [Fe/H]= 0.01\pm0.14. Through isochrone fitting we found an age of log t= 9.6\pm0.1 (4.2\pm0.2 Gyr). A clump of approximately 60 stars around V= 16, (b-y)= 0.4 could be interpreted as a population of pre-cataclysmic variable stars (if members), or as a stream of field G-type stars placed at twice the distance of the cluster (if non-members).
description: 16 pages, 14 figures, accepted for publication in A&A
Isospin effect on quark matter instabilities
Creators: name: Liu, Lu-Meng
name: Zhou, Wen-Hao
name: Xu, Jun
name: Peng, Guang-Xiong
Publisher: name: arXiv
Year: 2021
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We have studied the mechanical and chemical instabilities as well as the liquid-gas-like phase transition in isospin asymmetric quark matter based on the NJL and the pNJL model. Areas of the mechanical instability region and the liquid-gas coexistence region are seen to be enlarged with a larger quark matter symmetry energy or in the presence of strange quarks. Our study shows that the light cluster yield ratio observed in relativistic heavy-ion collisions may not be affected much by the uncertainties of the isospin effect, and favors a smooth hadron-quark phase transition in compact stars as well as their mergers.
description: 8 pages, 7 figures
Pseudo-Goldstone Dark Matter in $SO(10)$
Creators: name: Okada, Nobuchika
name: Raut, Digesh
name: Shafi, Qaisar
name: Thapa, Anil
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We propose a pseudo-Goldstone boson dark matter (pGDM) particle in $SO(10)$ grand unified theory (GUT). Due to its Goldstone nature, this pGDM evades the direct DM detection experiments which, otherwise, severely constrain the parameter space of DM models. In $SO(10)$, the pGDM is embedded as a linear combination of the Standard Model (SM) singlet scalars in ${\bf 16_H}$ and ${\bf 126_H}$ representations. We consider two scenarios for the intermediate route of $SO(10)$ symmetry breaking (SB) to the SM: $SU(5) \times U(1)_X$ and Pati-Salam the $SU(4)_c \times SU(2)_L \times SU(2)_R$ (4-2-2) gauge groups. The vacuum expectation value of ${\bf 126_H}$, which triggers the breaking of $U(1)_X$ and 4-2-2 symmetry in the two scenarios, respectively, determines the pGDM lifetime whose astrophysical lower bound provides one of the most stringent constraints. For the 4-2-2 route to $SO(10)$, the successful SM gauge coupling unification requires the 4-2-2 breaking scale to be ${\cal O} (10^{11})$ GeV, and most of the parameter space is excluded. For the $SU(5) \times U(1)_X$ route, on the other hand, the $U(1)_X$ breaking scale can be significantly higher, and a wide range of the parameter space is allowed. Furthermore, the proton lifetime in the $SU(5)$ case is predicted to be $4.53 \times 10^{34}$ years, which lies well within the sensitivity reach of the Hyper-Kamiokande experiment. We also examine the constraints on the model parameter space from the Large Hadron Collider and the indirect DM search by Fermi-LAT and MAGIC experiments.
description: 25 pages, 5 figures, Figures 3 revised, updated version accepted for publication in PRD
The Extragalactic Gamma Ray Background
Creators: name: Dermer, Charles D.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: One way to understand the nonthermal history of the universe is by establishing the origins of the unresolved and truly diffuse extragalactic gamma rays. Dim blazars and radio/gamma galaxies certainly make an important contribution to the galactic gamma-ray background given the EGRET discoveries, and previous treatments are reviewed and compared with a new analysis. Studies of the gamma-ray intensity from cosmic rays in star-forming galaxies and from structure formation shocks, as well as from dim GRBs, are briefly reviewed. A new hard gamma-ray source class seems required from the predicted aggregate intensity compared with the measured intensity.
description: 5 pages, 1 figures, in Proc. of the 1st GLAST Symposium, Feb 5-8, 2007, Stanford, AIP, Eds. S. Ritz, P. F. Michelson, and C. Meegan; references added, minor changes
Nonlinear dynamics of a self-mixing thin-slice solid-state laser subjected to Doppler shifted optical feedback
Creators: name: Otsuka, Kenju
name: Sudo, Seiichi
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences
subject: 78

description: Chaotic oscillations of a linearly polarized single longitudinal-mode thin-slice Nd:GdVO4 laser placed in a self-mixing laser Doppler velocity scheme were dynamic characterized in terms the intensity probability distribution, joint time-frequency analysis and short-term Fourier transformation of temporal evolutions, and the degree of disorder in the amplitude and phase of the long-term temporal evolutions. The transition from chaotic relaxation oscillations (RO) to chaotic spiking oscillations (SO) was explored via the chaotic itinerancy (CI) regime by increasing the feedback ratio toward the laser from a rotating scattering object. The intensity probability distribution was found to change from an exponential decay in the RO regime to an inverse power law in the SO regime, which manifests itself in self-organized critical behavior, while stochastic subharmonic frequency locking among the two periodicities of RO and SO takes place in the CI regime featuring quantum-noise (spontaneous emission)-induced order in the amplitude and phase of the spiking oscillations. All of the experimental results were reproduced by numerical simulations of a model equation of a single-mode self-mixing solid-state laser subjected to Doppler-shifted optical feedback from a rotating scattering object.
description: 11 pages, 17 figures
XWSB: A Blend System Utilizing XLS-R and WavLM with SLS Classifier detection system for SVDD 2024 Challenge
Creators: name: Zhang, Qishan
name: Wen, Shuangbing
name: Yan, Fangke
name: Hu, Tao
name: Li, Jun
Publisher: name: arXiv
Year: 2024
Subjects: subject: Sound (cs.SD)
subject: Audio and Speech Processing (eess.AS)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: This paper introduces the model structure used in the SVDD 2024 Challenge. The SVDD 2024 challenge has been introduced this year for the first time. Singing voice deepfake detection (SVDD) which faces complexities due to informal speech intonations and varying speech rates. In this paper, we propose the XWSB system, which achieved SOTA per-formance in the SVDD challenge. XWSB stands for XLS-R, WavLM, and SLS Blend, representing the integration of these technologies for the purpose of SVDD. Specifically, we used the best performing model structure XLS-R&SLS from the ASVspoof DF dataset, and applied SLS to WavLM to form the WavLM&SLS structure. Finally, we integrated two models to form the XWSB system. Experimental results show that our system demonstrates advanced recognition capabilities in the SVDD challenge, specifically achieving an EER of 2.32% in the CtrSVDD track. The code and data can be found at https://github.com/QiShanZhang/XWSB_for_ SVDD2024.
Κτιριακά περιβλήματα διπλής καμπυλότητας: μεθόδοι σχεδιασμού και κατασκευής
Creators: name: Αναστασίου, Στέφανος Π.
Publisher: name: Aristotle University of Thessaloniki
Year: 2013
Subjects: Περίβλημα
Όψεις
Διπλή
Καμπυλότητα
Facade
Envelope
Double
Curvature

description: Μέχρι σήμερα, οι όψεις διπλής καμπυλότητας αποτελούσαν μια κατά παραγγελία διαδικασία κάθε φορά η οποία ήταν ιδιαιτέρως χρονοβόρα και δαπανηρή. Στόχος της παρούσας έρευνας είναι η δημιουργία μιας μεθοδολογίας για την κατασκευή κτιριακών περιβλημάτων διπλής καμπυλότητας. Για τους σκοπούς της παρούσας διατριβής δημιουργήθηκε ένα αντιπροσωπευτικό μοντέλο των μορφών διπλής καμπυλότητας. Βάσει αυτού, έγινε δυνατή η μελέτη όλων των πτυχών που επηρεάζουν τέτοιες δομές και προτάθηκαν λύσεις για κάθε βήμα. Οι διάσπαρτες σκέψεις οι οποίες ήταν μεμονωμένες μέχρι τώρα έχουν εξεταστεί και έχουν περιγραφεί ως σύνολο και συγκεντρώνονται σε ένα ενιαίο σώμα. Ο σχεδιασμός της αρχικής ιδέας σε συνδυασμό με τη γνώση των κατασκευαστικών δομών και των διαθέσιμων στην αγορά υλικών, στοχεύει στην δημιουργία ενός αρτίου αισθητικά και κατασκευαστικά, περιβλήματος. Η παρούσα διατριβή φιλοδοξεί να υποβοηθήσει την οικοδομική βιομηχανία ώστε να προωθήσει τεχνικές τυποποίησης των μερών που μπορούν να χρησιμοποιηθούν για τα περιβλήματα διπλής καμπυλότητας, όπως αντίστοιχα υπάρχουν για τα επίπεδα περιβλήματα. Η τυποποίηση αναμένεται να μειώσει σημαντικά το κόστος κατασκευής και να απλοποιήσει τις μεθόδους υλοποίησης, αυξάνοντας τα κίνητρα εφαρμογής τέτοιου είδους περιβλημάτων.
description: Until today, the design and construction of double curved facades was time consuming and costly process. The objective of this research is to develop a methodology for the construction of double curved building enclosures. For the purpose of this study a representative model of the double curved facades was created. On this basis, it was possible to study all aspects affecting such structures and proposed solutions for each step of the design and construction process. The scattered thoughts which were isolated so far have been tested and described as a whole and brought into a single body. The design of the original concept in combination with the knowledge of structural facade elements and materials, which are available in the market, aims to create a perfect aesthetic and structural envelope. This thesis has the target to assist the construction industry, to promote the standardization of parts that can be used for the double curved facades, as it functions for the flat envelopes. The standardization is expected to reduce the manufacturing costs and to simplify the implementation methods, by increasing incentives for implementation of such enclosures.
Order flow in the financial markets from the perspective of the Fractional Lévy stable motion
Creators: name: Gontis, Vygintas
Publisher: name: arXiv
Year: 2021
Subjects: subject: Statistical Finance (q-fin.ST)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Economics and business
subject: FOS: Physical sciences
subject: I.6.3; I.6.4; I.6.5
subject: 62, 82

description: It is a challenging task to identify the best possible models based on given empirical data of observed time series. Though the financial markets provide us with a vast amount of empirical data, the best model selection is still a big challenge for researchers. The widely used long-range memory and self-similarity estimators give varying values of the parameters as these estimators themselves are developed for the specific models of time series. Here we investigate from the general fractional Lévy stable motion perspective the order disbalance time series constructed from the limit order book data of the financial markets. Our results suggest that previous findings of persistence in order flow could be related to the power-law distribution of order sizes and other deviations from the normal distribution. Still, orders have stable estimates of anti-correlation for the 18 randomly selected stocks when Absolute value and Higuchi's estimators are implemented. Though the burst duration analysis based on the first passage problem of time series and implemented in this research gives slightly higher estimates of the Hurst and memory parameters, it qualitatively supports the importance of the power-law distribution of order sizes.
description: 13 pages, 6 figures, 2 tables
Additional file 2: of Tumor-derived exosomal HMGB1 fosters hepatocellular carcinoma immune evasion by promoting TIM-1+ regulatory B cell expansion
Creators: name: Ye, Linsen
name: Zhang, Qi
name: Cheng, Yusheng
name: Chen, Xiaolong
name: Wang, Guoying
name: Shi, Mengchen
name: Zhang, Tong
name: Cao, Yingjiao
name: Pan, Hang
name: Zhang, Liting
name: Wang, Genshu
name: Deng, Yinan
name: Yang, Yang
name: Chen, Guihua
Publisher: name: figshare
Year: 2018
Subjects: subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Cancer
subject: Science Policy

description: Table S2. Characteristics of the study population (NÂ =â 101). (DOCX 15 kb)
title: Power and coordination in the multinational company
title: a post-heterarchical perspective
titleType: Subtitle
Creators: name: Jarvis, Andrew
Publisher: name: Lancaster University
Year: 2019
Subjects: multinational corporations (MNCs) and enterprises (MNEs)
power
coordination
Heterarchy
interdependence
individuals
alignment

description: Multinational Companies (MNCs) are not only among the most important
      institutions in our globalising world, but are fascinating organisations
      given their complexity and the daily challenge they face of operating
      across different countries and cultures. However, MNC’s have mainly been
      theorised as a structure of units, with relatively little focus upon how
      they operate at the level of the individual (Piekkari & Welch,
      2010). This thesis seeks to understand how individuals navigate the
      structures of the MNC and, using concepts of power, examines how different
      perspectives and interests are reconciled to enable coordination. In
      particular, this thesis explores the dynamics of individuals’ power
      relations in GlobeCo, a major European MNC that has evolved from a
      polycentric to an interdependent, heterarchical organisation (Hedlund,
      1986). The analysis highlights the heterarchy as a context of ambiguity
      and contestation, reflected in continuous organisational fluidity, in
      which the formal units of the MNC are neither stable nor well defined.
      This suggests that GlobeCo needs to be considered as a post-heterarchical
      MNC in which interdependence, cultural and institutional pressures, and
      diverse interests are experienced, and resolved, at the individual level.
      The implications of the post-heterarchical form for our understanding of
      the MNC are considered.The thesis further shows how individuals rely upon
      the temporary acceptance of multiple forms of episodic power-in-use.
      Through examining a particular change initiative in depth, the thesis
      shows both how individuals leverage the different forms of power-in-use,
      but also use apparently everyday practices to build shared understanding,
      legitimacy and commitment – and through this achieve sufficient
      compatibility of understanding and actions, a transient intersubjective
      alignment, to allow coordination.As such, the thesis not only provides a
      better understanding of the heterarchical multinational, but highlights
      the role of the individual in shaping power relations to achieve
      coordinated action. In doing so, it gives insight into how individuals’
      episodic action can shape systemic power relations that, in turn, provide
      the basis for episodic power-in-use.
Pleiocarpumlignan A, a new dineolignan from Piper pleiocarpum Chang ex Tseng
Creators: name: Xu, Wen-Hui
name: Su, Xiao-Min
name: Zhang, Xin-Min
name: Qi, JianHua
name: Wang, Dawei
name: Wang, Meng
name: Liang, Qian
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Biochemistry
subject: Environmental Sciences not elsewhere classified
subject: Chemical Sciences not elsewhere classified
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified

description: The investigation of chemical constituents from the whole plants Piper pleiocarpum Chang ex Tseng resulted in the isolation of one new dineolignan, pleiocarpumlignan A (1), along with one known benzoate derivative, trans-2,3-diacetoxy-1-[(benzoy1oxy)methyl]-cyclohexa-4,6-diene (2), and two known neolignans (3–4) as (±)-trans-dehydrodiisoeugenol (3), (7R,8R,3′S)-△8′-3′,6′-dihydro-3′-methoxy-3,4-methylenedioxy-6′-oxo-8,3′,7,O,4′-lignan (4). Their structures were elucidated through extensive spectroscopic analyses including 1D, 2D NMR, HR-ESI-MS, and by comparison with the literature. All compounds (1–4) were firstly isolated from Piper pleiocarpum Chang ex Tseng. The 13C NMR spectra of 2 were completely assigned for the first time. Cytotoxic activities of these isolated compounds against five human cancer cell lines (including A-549, SMMC-7721, HL-60, MCF-7, and SW-480) were evaluated.
Analytical solutions for black-hole critical behaviour
Creators: name: Harada, Tomohiro
name: Mahajan, Ashutosh
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Dynamical Einstein cluster is a spherical self-gravitating system of counterrotating particles, which may expand, oscillate and collapse. This system exhibits critical behaviour in its collapse at the threshold of black hole formation. It appears when the specific angular momentum of particles is tuned finely to the critical value. We find the unique exact self-similar solution at the threshold. This solution begins with a regular surface, involves timelike naked singularity formation and asymptotically approaches a static self-similar cluster.
description: 4 pages, 3 figures, accepted for publication in General Relativity and Gravitation, typos corrected