cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Analytic Resolution of Puzzle in $B\to K π$ decays
Creators: name: Kim, C. S.
name: Oh, Sechul
name: Yoon, Yeo Woong
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present a systematic method to extract each standard model (SM)-{\it like} hadronic parameter as well as new physics parameters in analytic way for $B\to Kπ$ decays. Using the analytic method to the currently available experimental data, we find two possible solutions analytically equivalent: one showing the large SM-{\it like} color-suppressed tree contribution and the other showing the large SM-{\it like} EWP contribution. The magnitude of the NP amplitude and its weak phase are quite large. For instance, we find $|P^{NP}/P| = 0.39\pm0.13$, $ϕ^{NP}=91^\circ\pm15^\circ$ and $δ^{NP}=8^\circ\pm27^\circ$, which are the ratio of the NP-to-SM contribution, the weak and the relative strong phase of the NP amplitude, respectively.
description: 17 pages, 3 figures, The title has been also changed
Nature-Inspired Interconnects for Self-Assembled Large-Scale Network-on-Chip Designs
Creators: name: Teuscher, Christof
Publisher: name: arXiv
Year: 2007
Subjects: subject: Hardware Architecture (cs.AR)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: Future nano-scale electronics built up from an Avogadro number of components needs efficient, highly scalable, and robust means of communication in order to be competitive with traditional silicon approaches. In recent years, the Networks-on-Chip (NoC) paradigm emerged as a promising solution to interconnect challenges in silicon-based electronics. Current NoC architectures are either highly regular or fully customized, both of which represent implausible assumptions for emerging bottom-up self-assembled molecular electronics that are generally assumed to have a high degree of irregularity and imperfection. Here, we pragmatically and experimentally investigate important design trade-offs and properties of an irregular, abstract, yet physically plausible 3D small-world interconnect fabric that is inspired by modern network-on-chip paradigms. We vary the framework's key parameters, such as the connectivity, the number of switch nodes, the distribution of long- versus short-range connections, and measure the network's relevant communication characteristics. We further explore the robustness against link failures and the ability and efficiency to solve a simple toy problem, the synchronization task. The results confirm that (1) computation in irregular assemblies is a promising and disruptive computing paradigm for self-assembled nano-scale electronics and (2) that 3D small-world interconnect fabrics with a power-law decaying distribution of shortcut lengths are physically plausible and have major advantages over local 2D and 3D regular topologies.
Structure and evolution of Zel'dovich pancakes as probes of dark energy models
Creators: name: Sutter, P. M.
name: Ricker, P. M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We examine how coupled dark matter and dark energy modify the development of Zel'dovich pancakes. We study how the various effects of these theories, such as a fifth force in the dark sector and a modified particle Hubble drag, produce variations in the redshifts of caustic formation and the present-day density profiles of pancakes. We compare our results in direct simulation to a perturbation theory approach for the dark energy scalar field. We determine the range of initial scalar field amplitudes for which perturbation theory is accurate in describing the development of the pancakes. Notably, we find that perturbative methods which neglect kinetic terms in the scalar field equation of motion are not valid for arbitrarily small perturbations. We also examine whether models that have been tuned to match the constraints of current observations can produce new observable effects in the nonlinear structure of pancakes. Our results suggest that a fully realistic three-dimensional simulation will produce significant new observable features, such as modifications to the mass function and halo radial density profile shapes, that can be used to distinguish these models from standard concordance cosmology and from each other.
description: 10 pages, 10 figures, minor corrections, to be published in ApJ
A new code for low-resolution spectral identification of white dwarf binary candidates
Creators: name: Liu, Genghao
name: Tang, Baitian
name: Ren, Liangliang
name: Li, Chengyuan
name: Cheng, Sihao
name: Zong, Weikai
name: Fu, Jianning
name: Ma, Bo
name: Xu, Cheng
name: Hu, Yiming
Publisher: name: arXiv
Year: 2024
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Close white dwarf binaries (CWDBs) are considered to be progenitors of several exotic astronomical phenomena (e.g., type Ia supernovae, cataclysmic variables). These violent events are broadly used in studies of general relativity and cosmology. However, obtaining precise stellar parameter measurements for both components of CWDBs is a challenging task given their low luminosities, swift time variation, and complex orbits. High-resolution spectra (R$> 20 000$) are preferred but expensive, resulting in a sample size that is insufficient for robust population study. To release the full potential of the less expensive low-resolution spectroscopic surveys, and thus greatly expand the CWDB sample size, it is necessary to develop a robust pipeline for spectra decomposition and analysis. We used an artificial neural network (ANN) to build spectrum generators for DA/DB white dwarfs and main-sequence stars. The best-fit stellar parameters were obtained by finding the least $χ^2$ solution to these feature lines and the continuum simultaneously. We demonstrate the reliability of our code with two well-studied CWDBs, WD 1534+503 and PG 1224+309. We also estimate the stellar parameters of 14 newly identified CWDB candidates, most of which are fitted with double component models for the first time. Our estimates agree with previous results for the common stars and follow the statistical distribution in the literature. The application of our code to a large volume of white dwarf binary candidates will offer important statistic samples to stellar evolution studies and future gravitational wave monitoring.
description: 14pages, 12 figures, 2 tables.Accepted by A&A
About the Characteristic Function of a Set
Creators: name: Bencze, Mihaly
name: Smarandache, Florentin
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Mathematics (math.GM)
subject: FOS: Mathematics

description: In this paper we give a method, based on the characteristic function of a set, to solve some difficult problems of set theory in undergraduate research.
description: 11 pages
State preparation and dynamics of ultracold atoms in higher lattice orbitals
Creators: name: Mueller, Torben
name: Foelling, Simon
name: Widera, Artur
name: Bloch, Immanuel
Publisher: name: arXiv
Year: 2007
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We report on the realization of a multi-orbital system with ultracold atoms in the excited bands of a 3D optical lattice by selectively controlling the band population along a given lattice direction. The lifetime of the atoms in the excited band is found to be considerably longer (10-100 times) than the characteristic time scale for inter-site tunneling, thus opening the path for orbital selective many-body physics with ultracold atoms. Upon exciting the atoms from an initial lowest band Mott insulating state to higher lying bands, we observe the dynamical emergence of coherence in 1D (and 2D), compatible with Bose-Einstein condensation to a non-zero momentum state.
description: 4 pages, 4 figures
Multi-class Text Classification using BERT-based Active Learning
Creators: name: Prabhu, Sumanth
name: Mohamed, Moosa
name: Misra, Hemant
Publisher: name: arXiv
Year: 2021
Subjects: subject: Information Retrieval (cs.IR)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Text Classification finds interesting applications in the pickup and delivery services industry where customers require one or more items to be picked up from a location and delivered to a certain destination. Classifying these customer transactions into multiple categories helps understand the market needs for different customer segments. Each transaction is accompanied by a text description provided by the customer to describe the products being picked up and delivered which can be used to classify the transaction. BERT-based models have proven to perform well in Natural Language Understanding. However, the product descriptions provided by the customers tend to be short, incoherent and code-mixed (Hindi-English) text which demands fine-tuning of such models with manually labelled data to achieve high accuracy. Collecting this labelled data can prove to be expensive. In this paper, we explore Active Learning strategies to label transaction descriptions cost effectively while using BERT to train a transaction classification model. On TREC-6, AG's News Corpus and an internal dataset, we benchmark the performance of BERT across different Active Learning strategies in Multi-Class Text Classification.
Real time parameter estimation for adaptive OFDM/OTFS selection
Creators: name: Darghouthi, Amina
name: Khlifi, Abdelhakim
name: Chibani, Belgacem
Publisher: name: arXiv
Year: 2024
Subjects: subject: Information Theory (cs.IT)
subject: Networking and Internet Architecture (cs.NI)
subject: Systems and Control (eess.SY)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Future wireless communication systems must simultaneously address multiple challenges to ensure accurate data detection, deliver high Quality of Service (QoS), adding enable a high data transmission with low system design. Additionally, they need to reduce energy consumption and latency without increasing system complexity. Orthogonal Frequency Division Multiplexing (OFDM) is a commonly used waveform in 4G and 5G systems, it has limitations in handling significant delay and Doppler spread in high mobility scenarios. To overcome these weaknesses, a novel waveform named Orthogonal Time Frequency Space (OTFS) has been proposed, which aims to improve upon OFDM by closely matching signals to channel behavior. In this study, we propose a novel strategy that enables operators to dynamically select the best waveform based on estimated mobile user parameters. We use an Integrated Radar Sensing and Communication System (ISAC) to estimate delay and Doppler, as well as speed and range. This approach allows the base station to adapt to the mobile target, thereby enhancing the performance of wireless communication systems in high mobility and low complexity scenarios. Simulation results demonstrate the effectiveness of our proposed approach and show that it outperforms existing methods.
description: 20 pages, 8 figures; 3 tables
Τοξικοεξάρτηση: προσέγγιση των θεσμών της υπό το πρίσμα της Κοινωνιολογίας του Δικαίου
Creators: name: Τερζίδης, Χρήστος Μ.
Publisher: name: Aristotle University of Thessaloniki
Year: 2013
Subjects: subject: Τοξικοεξάρτηση
subject: Κοινωνιολογία
subject: Ναρκωτικά
subject: Θεσμοί
subject: Opiate dependence
subject: Sociology
subject: FOS: Sociology
subject: Drugs
subject: Institutions

description: Η παρούσα διδακτορική διατριβή πραγματεύεται τους θεσμούς του φαινομένου της τοξικοεξάρτησης υπό το πρίσμα της κοινωνιολογίας του δικαίου. Το πρώτο κεφάλαιο ασχολείται με μια εισαγωγική γνωριμία με τις έννοιες ναρκωτικά, τοξικοεξάρτηση, στερητικό σύνδρομο. Το δεύτερο κεφάλαιο παρουσιάζει το εν Ελλάδι ισχύον νομικό καθεστώς που αφορά την ποινική μεταχείριση των εξαρτημένων από ναρκωτικές ουσίες ατόμων. Το τρίτο κεφάλαιο παρουσιάζει ποια στάδια περνά το πρόβλημα της τοξικοεξάρτησης για να μετατραπεί το κοινωνικό αυτό πρόβλημα σε ιδεολογικό διακύβευμα. Το τέταρτο κεφάλαιο αναζητά τους παράγοντες της τοξικοεξάρτησης. Στο πέμπτο κεφάλαιο εκτίθενται κάποιες προτάσεις του γράφοντος τόσο για την πρόληψη όσο και για την καταστολή του φαινομένου της τοξικοεξάρτησης. Στο έκτο και τελευταίο κεφάλαιο γίνεται μια γενική σύνοψη των ευρημάτων και εκφράζεται η άποψη ότι το πρόβλημα της τοξικοεξάρτησης δεν αντιμετωπίζεται μόνο σε νομικό και κατασταλτικό επίπεδο αλλά απαιτείται η διαμόρφωση μιας ανθρωποκεντρικής κοινωνικής πολιτικής η οποία οφείλει να εδράζεται στα πορίσματα περισσότερων κοινωνικών επιστημών, της κοινωνιολογίας της ψυχολογίας και της εγκληματολογίας .Για τον λόγο αυτό ερευνάται υπό το πρίσμα της κοινωνιολογίας του δικαίου, η οποία εξετάζει το δίκαιο ως κοινωνικό φαινόμενο και , με τον τρόπο αυτό ,αποτελεί ένα είδος επιστημονικού ιμάντα που συνδέει την νομική επιστήμη με τις λοιπές κοινωνικές επιστήμες.
description: This doctoral thesis deals with the institutions of the phenomenon of drug addiction in the light of the sociology of law. The first chapter deals with an introductory acquaintance with the concepts drugs, drug addiction, withdrawal syndrome. The second chapter presents the existing ,greek, legal regime concerning the criminal treatment of drug dependent persons. The third chapter presents what stage passes the problem of drug addiction to become a social problem in the ideological stakes. The fourth chapter identify factors drug addiction. The fifth chapter contains some suggestions of the writer for both the prevention and the repression of the phenomenon of drug addiction. The sixth and final chapter is a general summary of the findings and expressed the view that the problem of drug addiction is not addressed only in a legal and punitive level but requires the development of a human-centered social policy which must be based on the findings of several social sciences, sociology of psychology and criminology. Therefore investigated in light of the sociology of law, which examines the law as a social phenomenon and, in this way, is a kind of scientific strap connects jurisprudence with other social sciences.
Neural Radiosity
Creators: name: Hadadan, Saeed
name: Chen, Shuhong
name: Zwicker, Matthias
Publisher: name: arXiv
Year: 2021
Subjects: subject: Graphics (cs.GR)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: We introduce Neural Radiosity, an algorithm to solve the rendering equation by minimizing the norm of its residual similar as in traditional radiosity techniques. Traditional basis functions used in radiosity techniques, such as piecewise polynomials or meshless basis functions are typically limited to representing isotropic scattering from diffuse surfaces. Instead, we propose to leverage neural networks to represent the full four-dimensional radiance distribution, directly optimizing network parameters to minimize the norm of the residual. Our approach decouples solving the rendering equation from rendering (perspective) images similar as in traditional radiosity techniques, and allows us to efficiently synthesize arbitrary views of a scene. In addition, we propose a network architecture using geometric learnable features that improves convergence of our solver compared to previous techniques. Our approach leads to an algorithm that is simple to implement, and we demonstrate its effectiveness on a variety of scenes with non-diffuse surfaces.
Microlensing by Cosmic Strings
Creators: name: Kuijken, Konrad
name: Siemens, Xavier
name: Vachaspati, Tanmay
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider the signature and detectability of gravitational microlensing of distant quasars by cosmic strings. Because of the simple image configuration such events will have a characteristic light curve, in which a source would appear to brighten by exactly a factor of two, before reverting to its original apparent brightness. We calculate the optical depth and event rate, and conclude that current predictions and limits on the total length of strings on the sky imply optical depths of $\la 10^{-8}$ and event rates of fewer than one event per $10^9$ sources per year. Disregarding those predictions but replacing them with limits on the density of cosmic strings from the CMB fluctuation spectrum, leaves only a small region of parameter space (in which the sky contains about $3\times10^5$ strings with deficit angle of order 0.3 milli-arcseconds) for which a microlensing survey of exposure $10^7$ source-years, spanning a 20--40-year period, might reveal the presence of cosmic strings.
description: 4 pages, accepted for publication in MNRAS
Parfit's use of the Buddhist view on personal identity
Creators: name: Samarasinghe, Aruni
Publisher: name: University of British Columbia
Year: 2010

description: The fundamental questions raised in Derek Parfit's Reasons and Persons are 'what persons are?' and 'how they continue to exist?'. In discussing the concept of a person, Parfit considers these three questions: (1) What is the nature of a person? (2) What makes a person at two different times one and the same person? and (3) What is necessarily involved in the continued existence of each person over time? Parfit then distinguishes these two views about the nature of a person. * That persons are separately existing entities distinct from brains and bodies and their experiences. They continue to exist, although we know of their continuity because of thoughts, sensations and experiences that they have. * That persons are not separetely existing entities, distinct from our brains and bodies. The existence of a person, during any period, just consists in the existence of his brain and body, and the thinking of his thoughts, and the doing of his deeds, and the occurrence of many other physical and mental events. Parfit has not gone into a detailed discussion about the Buddhist view. My concern is that Parfit draws out of context from Buddhism and claims that the above second view to which according to him the Buddha would have agreed is true. Parfit's belief is that this is the truth about ourselves. But, coming to this view, Buddhism has considered not just the missing personal identity view. Buddhism talks about the 'being'. "All living beings are mortal and all forms are to disappear". Buddhism has an ontological view which grasps not only human beings but all other living beings in terms of impermanancy. It is the second, Reductionist view, that Parfit finds liberating and consoling which makes him less concerned about his own future, and his own death, and more concern about others. Here, the difference between the Buddha and Parfit is in what they do with the philosophical proposition once they arrive at it. For Buddha, realisation of this true belief is the starting point in practising the moral disciplinary path to attain the final goal of Nirvana, the cessation of suffering. My aim here will be to question Parfit on his understanding of Buddhism and how he has used Buddhist quotations to support his theory. My method will be to collect contexts in the early Buddhist texts in which the self is talked about, and to consider the various translations and commentarial explanations to see what makes the best sense of the concept of self that Parfit talks about in those contexts.
Theory of Two-Photon Interactions with Broadband Down-Converted Light and Entangled Photons
Creators: name: Dayan, Barak
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: When two-photon interactions are induced by down-converted light with a bandwidth that exceeds the pump bandwidth, they can obtain a behavior that is pulse-like temporally, yet spectrally narrow. At low photon fluxes this behavior reflects the time and energy entanglement between the down-converted photons. However, two-photon interactions such as two-photon absorption (TPA) and sum-frequency generation (SFG) can exhibit such a behavior even at high power levels, as long as the final state (i.e. the atomic level in TPA, or the generated light in SFG) is narrowband enough. This behavior does not depend on the squeezing properties of the light, is insensitive to linear losses, and has potential applications. In this paper we describe analytically this behavior for travelling-wave down-conversion with continuous or pulsed pumping, both for high- and low-power regimes. For this we derive a quantum-mechanical expression for the down-converted amplitude generated by an arbitrary pump, and formulate operators that represent various two-photon interactions induced by broadband light. This model is in excellent agreement with experimental results of TPA and SFG with high power down-converted light and with entangled photons [Dayan et al., Phys. Rev. Lett. 93, 023005 (2004), Dayan et al., Phys. Rev. Lett. 94, 043602, (2005), Pe'er et al., Phys. Rev. Lett. 94, 073601 (2005)].
description: 23 pages, 4 figures, submitted to Phys. Rev. A
The Integral (orbifold) Chow Ring of Toric Deligne-Mumford Stacks
Creators: name: Jiang, Yunfeng
name: Tseng, Hsian-Hua
Publisher: name: arXiv
Year: 2007
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics

description: In this paper we study the integral Chow ring of toric Deligne-Mumford stacks. We prove that the integral Chow ring of a semi-projective toric Deligne-Mumford stack is isomorphic to the Stanley-Reisner ring of the associated stacky fan. The integral orbifold Chow ring is also computed. Our results are illustrated with several examples.
description: 26 pages
O IMPACTO DA REFORMA DO ESTADO SOBRE OS SISTEMAS DE CONTROLE GERENCIAL EM EMPRESAS BRASILEIRAS DURANTE O PERÍODO DE 1983 A 2003: ESTUDO DE NOVE CASOS
Creators: name: Gomes, Josir Simeone
name: Martinewski, André Luiz
Publisher: name: Revista de Informação Contábil
Year: 2008

description: O presente estudo procurou analisar o impacto da a reforma do Estado brasileiro sobre os sistemas de controle gerencial de grandes empresas brasileiras. Para tanto, foram estudadas as mudanças ocorridas em nove grandes empresas que no início da década de 80 enquadravam-se na categoria de empresas estatais. Assim, foi investigada a existência e os componentes dos mecanismos de controle gerencial praticados por estas empresas, comparando-se os resultados com os achados obtidos por Gomes (1983). Os resultados alcançados no presente trabalho sugerem que os sistemas de controle gerencial existentes nas empresas estudadas não atendem, em diversos aspectos, aos fundamentos teóricos que nortearam o estudo, embora tenham apresentado uma significativa evolução, quando comparados ao estudo que deu origem a esta pesquisa. Foi observado que, mesmo naquelas empresas onde foram encontrados sistemas de controle gerencial que, em alguns aspectos apresentavam pontos próximos daqueles vistos como relevantes na literatura estudada, quando examinados do ponto de vista do sistema como um todo, apresentavam alguns problemas relativos à importância de integração dos mecanismos de controle no atendimento dos interesses dos stakeholders.
description: Revista de Informação Contábil, v. 1, n. 1 (2007): RIC/UFPE - Revista de Informação Contábil
Formation of carbonyl sulfide (OCS) via SH radicals in interstellar CO-rich ice under dense cloud conditions
Creators: name: Santos, Julia C.
name: Linnartz, Harold
name: Chuang, Ko-Ju
Publisher: name: arXiv
Year: 2024
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Carbonyl sulfide (OCS) is widely observed in the gas phase towards star-forming regions and was the first of the only two sulfur-bearing species detected in interstellar ices so far. However, the chemical network governing its formation is still not fully understood. While the sulfurization of CO and the oxidation of CS are often invoked to form OCS, other mechanisms could have a significant contribution. In particular, the multistep reaction involving CO and SH is a good candidate to forming OCS in dense cloud environments. We aim to constrain the viability of the CO + SH route to forming solid OCS in the interstellar medium, in a similar manner as CO + OH is known to produce CO2 ice. This is achieved by conducting a systematic laboratory investigation of the targeted reactions on interstellar ice analogues under dense cloud conditions. An ultrahigh vacuum chamber is utilized to simultaneously deposit CO, H2S, and atomic H at 10 K. SH radicals produced in situ via hydrogen abstraction from H2S react with CO to form OCS. OCS is efficiently formed through surface reactions involving CO, H2S, and H atoms. The suggested underlying mechanism behind OCS formation is CO + SH -> HSCO followed by HSCO + H -> OCS + H2. The OCS yield reduces slowly, but remains significant with increasing CO:H2S mixing ratios (CO:H2S = 1:1, 5:1, 10:1, and 20:1). Our experiments provide unambiguous evidence that OCS can be formed from CO + SH in the presence of H atoms. This route remains efficient for large H2S dilutions (5% w.r.t CO), suggesting that it is a viable mechanism in interstellar ices. Given that SH radicals can be created in clouds throughout a wide evolutionary timescale, this mechanism could have a non-negligible contribution to forming interstellar OCS ice.
description: 7 pages, 4 figures, 1 table, accepted for publication in A&A on August 6th, 2024
Optical observations of the Galactic SNR HB9 and H II region G159.2+3.3
Creators: name: Li, Jiang-Tao
name: Lu, Li-Yuan
name: Mao, Huiyang
name: Xia, Zi-Qing
name: Chen, Yang
name: Zhou, Ping
name: Zhou, Xin
Publisher: name: arXiv
Year: 2024
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Context. We present multi-wavelength observations of the Galactic SNR HB9 and the H II region G159.2+3.3 apparently projected nearby, in order to study their properties and potential physical connections. Results. HB9 is bright in $γ$-rays, but the $γ$-ray morphology is centrally filled and most of it is not clearly associated with the surrounding molecular clouds. There is a weak apparent connection of HB9 to the IR bright enclosing shell of G159.2+3.3 in $γ$-ray. The diffuse Balmer line has almost identical morphology as the radio emission in G159.2+3.3, indicating they two are thermal in origin. Using medium-band high-resolution optical spectra from selected regions of the southeast (SE) shell of HB9 and G159.2+3.3, we found the radial velocity dispersion of HB9 along the slit is significantly higher than the FWHM of the lines. In contrast, these two values are both smaller and comparable to each other in G159.2+3.3. This indicates that the gas in HB9 may have additional global motion triggered by the SNR shock. The [N II] $λ$6583A/H$α$ line ratio of both objects can be interpreted with photo-ionisation by hot stars or low velocity shocks, except for the post-shock region in the SE shell of HB9, where the elevated [N II]/H$α$ line ratio suggests contribution from shock ionisation. The measured electron density from the [S II] 6716/6730 line ratio is significantly lower in the brighter G159.2+3.3 compared to the SE shell of HB9. Conclusions. Our density estimate suggests that G159.2+3.3, although appearing brighter and more compact, is likely located at a much larger distance than HB9, so the two objects have no physical connections, unless the shock compressed gas in HB9 has a significantly lower filling factor.
description: 14 pages, 9 figures, 2 tables, accepted for publication in A&A
title:  Identità e memoria, tra narrazione autobiografica e racconto collettivo: riflessioni critiche sulla teoria di Maurice Halbwachs
Creators: name: Giosi, Marco
Publisher: name: Roma TrE-Press
Year: 2021

description: Il presente saggio è volto ad analizzare la teoria della memoria collettiva elaborata dal sociologo Maurice Halbwachs. L'ipotesi interpretativa intende mettere a fuoco la presenza significativa, in Halbwachs, di un principio di narratività che agisce come elemento formativo della persona attraverso la complessa dialettica tra memoria sociale e memoria autobiografica.
description: Maurice Halbwachs e la memoria collettiva. Riletture critiche
Color Transfer in Associated Heavy-Quarkonium Production
Creators: name: Nayak, Gouranga C.
name: Qiu, Jian-Wei
name: Sterman, George
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We study the production of heavy quarkonium in association with an additional heavy pair. We argue that important contributions may come from phase space regions where three heavy fermions are separated by relative velocities much lower than the speed of light, and to which standard effective field theories do not apply. In this region, infrared sensitive color exchange is specific to the presence of the unpaired (anti)quark. This effect vanishes as the motion of the additional particle becomes relativistic with respect to the pair, and is completely absent for massless quarks and gluons in the final state.
description: 4 pages, 2 figures, a few changes in wording and a typo correction. Version accepted for publication in Phys. Rev. Lett
Speech Denoising Without Clean Training Data: A Noise2Noise Approach
Creators: name: Kashyap, Madhav Mahesh
name: Tambwekar, Anuj
name: Manohara, Krishnamoorthy
name: Natarajan, S
Publisher: name: arXiv
Year: 2021
Subjects: subject: Sound (cs.SD)
subject: Machine Learning (cs.LG)
subject: Audio and Speech Processing (eess.AS)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: I.2.6; I.5.4

description: This paper tackles the problem of the heavy dependence of clean speech data required by deep learning based audio-denoising methods by showing that it is possible to train deep speech denoising networks using only noisy speech samples. Conventional wisdom dictates that in order to achieve good speech denoising performance, there is a requirement for a large quantity of both noisy speech samples and perfectly clean speech samples, resulting in a need for expensive audio recording equipment and extremely controlled soundproof recording studios. These requirements pose significant challenges in data collection, especially in economically disadvantaged regions and for low resource languages. This work shows that speech denoising deep neural networks can be successfully trained utilizing only noisy training audio. Furthermore it is revealed that such training regimes achieve superior denoising performance over conventional training regimes utilizing clean training audio targets, in cases involving complex noise distributions and low Signal-to-Noise ratios (high noise environments). This is demonstrated through experiments studying the efficacy of our proposed approach over both real-world noises and synthetic noises using the 20 layered Deep Complex U-Net architecture.
description: Published in Interspeech 2021 ( See https://www.isca-speech.org/archive/interspeech_2021/kashyap21_interspeech.html ). 5 pages, 2 figures, 1 table
ASSOCIAÇÃO ENTRE NÍVEIS DE GOVERNANÇA, INDICADORES CONTÁBEIS E SETOR: UMA ANÁLISE SOB AS PERSPECTIVAS DA ANACOR E DA HOMALS
Creators: name: Fávero, Luiz Paulo Lopes
name: Martins, Gilberto De Andrade
name: De Lima, Gerlando Augusto Sampaio Franco
Publisher: name: Revista de Informação Contábil
Year: 2008
Subjects: Indicadores contábeis; Indicadores de governança; Análise multivariada de dados qualitativos; Anacor; Homals

description: Sob a hipótese inicial de que há diferenças dos indicadores ordinais de governança e contabilidade quando da avaliação dos segmentos de atuação das empresas listadas no ranking Forbes de melhores e maiores companhias dos Estados Unidos, realizou-se o presente estudo com o intuito principal de explicitar a plausibilidade e a importância da utilização de análise multivariada de dados qualitativos em ciências contábeis. Usou-se a análise de correspondência (Anacor) e a análise de homogeneidade (Homals) para uma representação gráfica, por meio de mapa perceptual, das relações multidimensionais das distâncias 2 entre as categorias das variáveis estudadas. As tabelas de contingência propiciaram, além do teste 2, a análise dos resíduos, que confirmaram a hipótese inicial. A análise das associações entre variáveis contábeis e financeiras, qualitativas ou quantitativas que passaram por um processo de categorização, pode oferecer subsídios para a formulação de novos problemas e estudos em contabilidade. Abstract: Under the initial hypothesis that ordinal governance and accounting variables differ among industries, considering the Forbes best big companies ranking, this study tries to explicit the importance of using multivariate qualitative data analysis applied to accounting. Correspondence (Anacor) and Homogeneity (Homals) Analysis was used to allow the construction of the graphic representation, or perceptual map, of multidimensional relationship of 2 distances among all variables´ categories studied. The contingency tables also presented the residual analysis that confirmed the initial hypothesis. The association analysis among accounting and finance variables, qualitative or quantitative that were categorized, can offer a new possibility of study and problem formulation in accounting. Key-words: Accounting variables; Governance variables; Multivariate qualitative data analysis; Correspondence analysis; Homogeneity analysis.
description: Revista de Informação Contábil, v. 1, n. 2 (2007): RIC - Revista de Informação Contábil
Ο ρόλος του υλικού αποκατάστασης στην εξέλιξη περιαματικών διατρήσεων του υποπολφικού τοιχώματος: συγκριτική ιστολογική έρευνα σε σκύλους
Creators: name: Ζαϊρη, Άννα Στ.
Publisher: name: Aristotle University of Thessaloniki
Year: 2013
Subjects: Υλικά αποκατάστασης
Αυξητικοί παράγοντες
Διατρήσεις
Υποπολφικό τοίχωμα
Rastorative materials
Growth factors
Perforation
Furcation

description: Σκοπός της εργασίας ήταν η συγκριτική αξιολόγηση των φλεγμονωδών αντιδράσεων και γενικότερα των αντιδράσεων των ιστών σε τέσσερις αυξητικούς παράγοντες, σε μια κονία οξειδίου του ψευδαργύρου (IRM), και τον φορέα ως μάρτυρες, όταν τοποθετήθηκαν σε διατρήσεις υποπολφικού τοιχώματος σε δόντια πειραματοζώων. Τα αποτελέσματα έδειξαν σημαντικά εντονώτερη φλεγμονώδη κυτταρική αντίδραση στις ομάδες του μετατρεπτικού αυξητικού παράγοντα β1 (TGFβ1), και της κονίας οξειδίου του ψευδαργύρου (ΙRM), και υψηλούς ρυθμούς επιθηλιακού πολλαπλασσιασμού στις ομάδες των TGFβ1, (bFGF) και (IGF-I). Σημαντικά εντονότερος σχηματισμός οστού διαπιστώθηκε στις ομάδες των μαρτύρων συγκριτικά με τις ομάδες του ΟΡ-1. Σημαντικά εντονότερος ρυθμός σχηματισμού οστεΐνης παρατηρήθηκε στις ομάδες των IGF-I and bFGF συγκριτικά με τις ομάδες του IRM. Κανένα από τα ενεργά βιολογικά μόρια δεν μπορεί να προταθεί για την αποκατάσταση διατρήσεων υποπολφικού τοιχώματος, παρά το γεγονός ότι οι αυξητικοί παράγοντες είχαν ξεκάθαρα διεγερτικό αποτέλεσμα στο σχηματισμό οστεΐνης και εμπόδισαν το σχηματισμό κάψας κολλαγόνου.
description: The aim of this study was the comparative evaluation of inflammatory reactions and tissue responses to four growth factors, or a zinc-oxide-eugenol-based cement(IRM), or the carrier as controls, when used for the repair of furcal perforations in dogs’ teeth. Results showed significantly high inflammatory cell response in the transforming growth factorβ1- and zinc-oxide-eugenol-based cement (IRM) groups and high rates of epithelial proliferation in the TGFβ1, basic fibroblast growth factor (bFGF) and insulin growth factor-I(IGF-I) groups. Significantly higher rates of bone formation were found in the control groups compared to the osteogenic protein-1(OP-1). Significantly higher rates of cementum formation were observed in the IGF-I and bFGF groups compared to the IRM. None of the biologically active molecules can be suggested for repairing furcal perforations, despite the fact that growth factors exerted a clear stimulatory effect on cementum formation and inhibited collagen capsule formation.
Linear polarization study of open clusters towards the anticenter direction: Signature of the spiral arms
Creators: name: Uppal, Namita
name: Ganesh, Shashikiran
name: Pelgrims, Vincent
name: Joshi, Santosh
name: Sarkar, Mrinmoy
Publisher: name: arXiv
Year: 2024
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Our objective is to investigate the distribution of dust and associated large-scale structures of the Galaxy using optical linear polarization measurements of various open clusters located at different distances in the Galactic anticenter direction. We present R-band linear polarization observations of stars towards five open clusters: Kronberger~1, Berkeley~69, Berkeley~71, Berkeley~19, and King~8 in the anticenter direction. The polarization observations were carried out using AIMPOL instrument mounted on the 104 cm Sampurnanand telescope of ARIES, Nainital, making it the first study to target the polarization observations towards distant clusters ($\sim$6~kpc). We combined the observed polarization data with the distance information from the Gaia space telescope to infer the dust distribution along the line of sight. The variation in the degree of polarization and extinction with distance reveals the presence of multiple dust layers along each cluster direction. In addition, common foreground dust layers detected towards different cluster directions highlight the presence of global features such as spiral arms. Our results show that the dust clouds at 2~kpc towards Berkeley~69 and Berkeley~71 coincide with the Perseus arm, while the dust layer at $\sim$4~kpc towards distant clusters, Berkeley~19 and King~8, indicates the presence of the Outer arm. The large-scale dust distribution obtained by combining our polarization results with the previous polarization studies of nearby open clusters suggests that the anticenter direction is characterized by low extinction, homogeneous dust distribution with somewhat uniform orientation of the plane-of-sky component of the magnetic field along the line of sight. Our study demonstrates the utility of polarization as a tool to study the large-scale dust distribution.
description: 22 Pages, 14 Figures, 7 Tables, Accepted for publication in Astronomy & Astrophysics Journal
Mixed Hyperbolic - Second-Order Parabolic Formulations of General Relativity
Creators: name: Paschalidis, Vasileios
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Two new formulations of general relativity are introduced. The first one is a parabolization of the Arnowitt, Deser, Misner (ADM) formulation and is derived by addition of combinations of the constraints and their derivatives to the right-hand-side of the ADM evolution equations. The desirable property of this modification is that it turns the surface of constraints into a local attractor because the constraint propagation equations become second-order parabolic independently of the gauge conditions employed. This system may be classified as mixed hyperbolic - second-order parabolic. The second formulation is a parabolization of the Kidder, Scheel, Teukolsky formulation and is a manifestly mixed strongly hyperbolic - second-order parabolic set of equations, bearing thus resemblance to the compressible Navier-Stokes equations. As a first test, a stability analysis of flat space is carried out and it is shown that the first modification exponentially damps and smoothes all constraint violating modes. These systems provide a new basis for constructing schemes for long-term and stable numerical integration of the Einstein field equations.
description: 19 pages, two column, references added, two proofs of well-posedness added, content changed to agree with submitted version to PRD
High power 1640-nm Er:Y2O3 ceramic laser at room temperature
Creators: name: Xie, Hangbin
name: Zhang, Jianing
name: Wang, Jun
name: Tang, Dingyuan
name: Shen, Deyuan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We report on high power operation of Er:Y2O3 ceramic laser at ~1.6 μm using low scattering loss, 0.25 at.% Er3+ doped ceramic sample fabricated in-house via co-precipitation process. The laser is in-band pumped by an Er, Yb fiber laser at 1535.6 nm and generates 10.2 W of continuous-wave (CW) output power at 1640.4 nm with a slope efficiency of 25% with respect to the absorbed pump power. To the best of our knowledge, this is the first demonstration of ~1.6 μm Er:Y2O3 laser at room temperature. The prospects for further scaling in output power and lasing efficiency via low Er3+ doping and reduced energy-transfer upconversion are discussed.
description: 8 pages, 5 figures
The Catholic Women's Network
Creators: name: Stanger, Elizabeth Ann
Publisher: name: University of British Columbia
Year: 2010

description: The Catholic Women's Network was formed in 1984 and continues to be an active and thriving group. Since its founding in 1984, however, it has gone through two generations of women who are quite different from each other and consequently have different expectations of the group. Initially the Network was formed to be a local support group for Catholic women who were feeling alienated from the Catholic Church and were finding it increasingly hard to continue to participate in it. Since 1987, the group has changed its membership and its function. Rather than functioning as a support group for women who attend Church it is now one part of a network of alternative forms of Catholic life available in the diocese. This thesis describes the two generations of the Catholic Women's Network and accounts for the group's evolution by examining broader historical trends within Roman Catholicism and Catholic feminism: a shift in understanding of what it means to be the Church, inaugurated by the Second Vatican Council (1962-1965); and a move away from liberal feminism and its demand for the inclusion of women in the Church's clerical hierarchy toward a Marxian analysis of Church structures and the concomitant development of Womenchurch, a network of small feminist Catholic groups devoted to transforming the Church into a community of co-equal participation.
ANÁLISE DA RELAÇÃO ENTRE EVIDENCIAÇÃO NOS RELATÓRIOS DA ADMINISTRAÇÃO E O NÍVEL DE GOVERNANÇA DAS EMPRESAS NA BOVESPA
Creators: name: Gallon, Alessandra Vasconcelos
name: Beuren, Ilse Maria
name: Hein, Nelson
Publisher: name: Revista de Informação Contábil
Year: 2008
Subjects: Evidenciação; Relatórios da Administração; Governança Corporativa.

description: O artigo objetiva analisar a relação entre o grau de evidenciação nos Relatórios da Administração e o nível de governança em que se encontram as empresas participantes do novo mercado e dos níveis diferenciados da Bovespa. A pesquisa caracteriza-se como descritiva, realizada por meio de análise documental, com abordagem quali-quantitativa e de corte seccional. A população compreende as 55 companhias abertas participantes dos níveis 1 e 2 de governança corporativa e do novo mercado da Bovespa. Nos Relatórios da Administração de 2004 buscaram-se os itens obrigatórios de evidenciação ou recomendados e os itens não obrigatórios e nem recomendados. Os resultados da pesquisa mostram um acerto de 54,55%, entre a classificação pela análise discriminante e o nível de governança das empresas na Bovespa, referente ao conteúdo da evidenciação dos itens obrigatórios ou recomendados, e um acerto de 40,00%, referente ao conteúdo da evidenciação dos itens não obrigatórios e nem recomendados. Conclui-se que há relação entre o grau de evidenciação nos Relatórios da Administração e o nível de governança das empresas na Bovespa. Portanto, confirma-se o pressuposto que estas empresas apresentam melhorias na prestação de informação ao mercado, considerando-se os respectivos os níveis diferenciados de governança. Abstract: This article analyzes the relationship between the degree of disclosure shown in the Company Business Reports of the Financial Reports and the level of governance at which those companies participate in the new market and in the differentiated levels of Bovespa. The research is descriptive, with a qualitative-quantitative cross-sectional approach. The survey comprised 55 open publicly-quoted companies which participate at corporate governance levels 1 and 2 and in Bovespa's new market. From Company Business Reports of the Financial Reports for 2004, obligatory, recommended, non-obligatory and non-recommended items were all searched for. The research found a return of 54.55%, between the classification by discriminatory analysis and the level of governance of the companies on Bovespa, referring to the content disclosure for obligatory and recommended items, and a return of 40.00% referring to the content disclosure for non-obligatory and non-recommended items. As a conclusion, the presupposition that these companies show improvements in disclosing information to the market was confirmed, when respectively taking into account the differentiated levels of governance. Key-words: Disclosure; Company Business Reports of the Financial Reports; Corporate Governance.
description: Revista de Informação Contábil, v. 1, n. 2 (2007): RIC - Revista de Informação Contábil
Narrowing your FOV with SOLiD: Spatially Organized and Lightweight Global Descriptor for FOV-constrained LiDAR Place Recognition
Creators: name: Kim, Hogyun
name: Choi, Jiwon
name: Sim, Taehu
name: Kim, Giseop
name: Cho, Younggun
Publisher: name: arXiv
Year: 2024
Subjects: subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: We often encounter limited FOV situations due to various factors such as sensor fusion or sensor mount in real-world robot navigation. However, the limited FOV interrupts the generation of descriptions and impacts place recognition adversely. Therefore, we suffer from correcting accumulated drift errors in a consistent map using LiDAR-based place recognition with limited FOV. Thus, in this paper, we propose a robust LiDAR-based place recognition method for handling narrow FOV scenarios. The proposed method establishes spatial organization based on the range-elevation bin and azimuth-elevation bin to represent places. In addition, we achieve a robust place description through reweighting based on vertical direction information. Based on these representations, our method enables addressing rotational changes and determining the initial heading. Additionally, we designed a lightweight and fast approach for the robot's onboard autonomy. For rigorous validation, the proposed method was tested across various LiDAR place recognition scenarios (i.e., single-session, multi-session, and multi-robot scenarios). To the best of our knowledge, we report the first method to cope with the restricted FOV. Our place description and SLAM codes will be released. Also, the supplementary materials of our descriptor are available at \texttt{\url{https://sites.google.com/view/lidar-solid}}.
description: Accepted in IEEE Robotics and Automation Letters (2024)