cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
J2229+2725: an extremely low-metallicity dwarf compact star-forming galaxy with an exceptionally high [OIII]5007/[OII]3727 flux ratio of 53
Creators: name: Izotov, Y. I.
name: Thuan, T. X.
name: Guseva, N. G.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Using the Large Binocular Telescope (LBT)/Multi-Object Dual Spectrograph (MODS), we have obtained optical spectroscopy of one of the most metal-poor dwarf star-forming galaxies (SFG) in the local Universe, J2229+2725. This galaxy with a redshift z=0.0762 was selected from the Data Release 16 (DR16) of the Sloan Digital Sky Survey (SDSS). Its properties derived from the LBT observations are most extreme among SFGs in several ways. Its oxygen abundance 12+logO/H=7.085+/-0.031 is among the lowest ever observed for a SFG. With its very low metallicity, an absolute magnitude Mg=-16.39 mag, a low stellar mass Mstar=9.1x10^6 Msun and a very low mass-to-light ratio Mstar/Lg~0.0166 (in solar units), J2229+2725 deviates strongly from the luminosity-metallicity relation defined by the bulk of the SFGs in the SDSS. J2229$+$2725 has a very high specific star-formation rate sSFR~75 Gyr^-1, indicating very active ongoing star formation. Three other features of J2229+2725 are most striking, being the most extreme among lowest-metallicity SFGs: 1) a ratio O32=I([OIII]5007)/I([OII]3727)~53, 2) an equivalent width of the Hbeta emission line EW(Hbeta) of 577A, and 3) an electron number density of ~1000 cm^-3. These properties imply that the starburst in J2229+2725 is very young. Using the extremely high O32 in J2229+2725, we have improved the strong-line calibration for the determination of oxygen abundances in the most metal-deficient galaxies, in the range 12 + logO/H<7.3.
description: 10 pages, 8 figures, accepted for publication in Monthly Notices of the Royal Astronomical Society. arXiv admin note: text overlap with arXiv:1812.07917
AdS graviton stars and differential configurational entropy
Creators: name: da Rocha, Roldao
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: AdS graviton stars are studied in the differential configurational entropy setup, as solutions of the effective Einstein field equations that backreact to compactification. With the critical central density of AdS graviton stars, the differential configurational entropy is derived and computed, presenting global minima for a wide range of stellar mass magnitude orders. It indicates insular domains of configurational stability for AdS graviton stars near astrophysical neutron star densities. Other relevant features are also reported.
description: 6 pages, 1 figure
Smart Home Crawler: Towards a framework for semi-automatic IoT sensor integration
Creators: name: Strohbach, Martin
name: Saavedra, Luis Adan
name: Smirnov, Pavel
name: Legostaieva, Stefaniia
Publisher: name: arXiv
Year: 2021
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences
subject: D.2.11
subject: 68U35

description: Sensor deployments in Smart Homes have long reached commercial relevance for applications such as home automation, home safety or energy consumption awareness and reduction. Nevertheless, due to the heterogeneity of sensor devices and gateways, data integration is still a costly and timeconsuming process. In this paper we propose the Smart Home Crawler Framework that (1) provides a common semantic abstraction from the underlying sensor and gateway technologies, and (2) accelerates the integration of new devices by applying machine learning techniques for linking discovered devices to a semantic data model. We present a first prototype that was demonstrated at ICT 2018. The prototype was built as a domainspecific crawling component for IoTCrawler, a secure and privacy-preserving search engine for the Internet of Things.
description: 2019 Global IoT Summit (GIoTS)
A Two-Sided Matching Model for Data Stream Processing in the Cloud-Fog Continuum
Creators: name: Mehran, Narges
name: Kimovski, Dragi
name: Prodan, Radu
Publisher: name: arXiv
Year: 2021
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: FOS: Computer and information sciences

description: Latency-sensitive and bandwidth-intensive stream processing applications are dominant traffic generators over the Internet network. A stream consists of a continuous sequence of data elements, which require processing in nearly real-time. To improve communication latency and reduce the network congestion, Fog computing complements the Cloud services by moving the computation towards the edge of the network. Unfortunately, the heterogeneity of the new Cloud-Fog continuum raises important challenges related to deploying and executing data stream applications. We explore in this work a two-sided stable matching model called Cloud-Fog to data stream application matching (CODA) for deploying a distributed application represented as a workflow of stream processing microservices on heterogeneous Cloud-Fog computing resources. In CODA, the application microservices rank the continuum resources based on their microservice stream processing time, while resources rank the stream processing microservices based on their residual bandwidth. A stable many-to-one matching algorithm assigns microservices to resources based on their mutual preferences, aiming to optimize the complete stream processing time on the application side, and the total streaming traffic on the resource side. We evaluate the CODA algorithm using simulated and real-world Cloud-Fog scenarios. We achieved 11 to 45% lower stream processing time and 1.3 to 20% lower streaming traffic compared to related state-of-the-art approaches.
description: 7 figures
title: Позднеантичный город как пространство репрезентации римской императорской власти в IV–V вв.
title: The Late Antique City as a Space of Representation of Roman Imperial Power in the Fourth and Fifth Centuries AD
Creators: name: Конопаткин, В. А.
Publisher: name: Мнемон 22 (2022)
Year: 2022

description: В позднеантичном обществе город занимал важнейшее место в системе управления империей. Конфигурация власти в государстве в первую очередь определялась фигурой императора и его отношениями как с местными элитами, так и с имперским чиновничеством – все они осуществляли свою власть посредством городских структур. Поддержание легитимности правителя являлось одной из важнейших задач имперской политики. Выполнялась она посредством репрезентации власти Августа путём, с одной стороны, строительства монументальных сооружений: величественных улиц, дворцов или публичных зданий, которые теперь чаще финансировались императором. С другой стороны, поддерживалось, как выразилась С. Маккормак, ощущение «вечного присутствия императора» при помощи различных изображений и проводимых в городах ритуалов. При этом устройство городского пространства оказывалось тесно связано с ритуальным самовыражением римской императорской власти. Таким образом, популяризация власти императора в городах обеспечивалась не только строительством административных зданий или монументальных сооружений, но и общим обустройством городского пространства в целях постоянного повторения ритуалов императорской саморепрезентации, а в период их отсутствия – наполнением городов символами, призванными напомнить о величии Августа и его власти.
description: In late antiquity the city played an essential role in the system of imperial administration. The configuration of power in the empire was primarily determined by the figure of the emperor and his relations with both local elites and the imperial bureaucracy, all of whom exercised their power through urban structures. Maintaining the legitimacy of the ruler was one of the most important tasks of imperial policy. This was accomplished by representing the power of Augustus through, on the one hand, the construction of monumental structures: grand streets, palaces, or public buildings, which were now more often financed by the emperor. On the other hand, the feeling of the "eternal presence of the emperor" was maintained, as S. McCormack put it, through various images and rituals held in cities. In this case, the design of urban space was closely related to the ritual expression of Roman imperial power. Thus, the popularization of the emperor's power in cities was ensured not only by the construction of administrative buildings or monumental structures, but by the general decoration of urban space in order to constantly repeat the rituals of imperial self-representation, and in their absence, by filling cities with symbols designed to recall the greatness of Augustus and his power.
The vascular role of vasopressin and sympathetic nervous system
Creators: name: Tabrizchi, Reza
Publisher: name: University of British Columbia
Year: 2010

description: The aim of my study was to investigate the influence of arginine vasopressin (AVP) and the sympathetic nervous system in the control of peripheral resistance and to examine the constrictor actions of various pressor agents in capacitance vessels. In the first set of experiments, the vascular effect of AVP in the presence and absence of influence from angiotensin II (Ag II) or a-adrenergic system was investigated in pentobarbital anaesthetized rats. Cardiac output (CO) and the distribution of blood flow (BF) were determined by the microspheres technique prior to and following the injection of an AVP pressor antagonist [d(CH₂)₅Tyr(Me)AVP] in three Groups of rats: saline-treated (I), saralasin-treated (II) and phentolamine-treated (III). The AVP antagonist decreased MAP and TPR in all Groups and it caused a greater depressor effect in Groups II and III than in I. In Group I, AVP antagonist increased BF to the stomach and skin. In Group II, AVP antagonist increased BF to the muscle and skin. In Group III, AVP antagonist markedly increased BF to the muscle. The second set of experiments investigates the physiological role of the α-adrenoceptors in the vasculature. The effects of prazosin (α₂-blocker), rauwolscine (α₁-blocker) and phentolamine (nonselective α -blocker) on MAP, CO and its distribution were investigated in halothane anaesthetized rats. All three a-antagonists caused similar decreases of MAP and all increased of % distribution of CO to the lungs and muscle. During the infusion of prazo- sin, TPR was decreased but CO was not changed. In contrast, CO was decreased but TPR was not altered during the infusions of rauwolscine and phentolamine. Since CO was reduced after the blockade of α₂-but not α₁ receptors, it appears that α₂ receptors are responsible for the control of venous capacitance. A final set of experiments were carried out to investigate the actions of various vasoconstrictor agents on the capacitance vessels of conscious rats. We investigated the dose-response relationships of methoxamine (α₁-agonist), B-HT 920 (α₂--agonist), noradrenaline (NA, non-selective α-agonist), AVP and Ag II on MAP, mean circulatory filling pressure (MCFP) and heart rate (HR) in conscious rats. The infusions of all the agonists, but not saline, caused dose-dependent increases in MAP and decreases in HR. The infusions of saline and methoxamine did not affect MCFP while the infusions of B-HT 920, NA and Ag II increased MCFP. Therefore, receptors for α₂ adrenergic agonists and Ag II are involved in the control of venous tone.
SINTESI E CARATTERIZZAZIONE STRUTTURALE DI MWCNTs PER DEFLUORURAZIONE TERMICA DEL PTFE
Creators: name: Peluso, Antonio
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2010

description: Questo lavoro di tesi si propone di studiare e sviluppare un nuovo metodo di sintesi dei nanotubi di carbonio, facile da realizzare, a basso costo ed in grado di ottenere grandi quantità di prodotto in tempi molto brevi. Tale sistema, abbattendo i costi ed i tempi di produzione, permetterebbe l’uso dei nanotubi di carbonio in moltissime applicazioni industriali, e non solo in quelle ad altissima tecnologia.
Il sistema studiato e realizzato si basa sul processo chimico della defluorurazione termica del PTFE.
Data Generating Process to Evaluate Causal Discovery Techniques for Time Series Data
Creators: name: Lawrence, Andrew R.
name: Kaiser, Marcus
name: Sampaio, Rui
name: Sipos, Maksim
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (stat.ML)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Going beyond correlations, the understanding and identification of causal relationships in observational time series, an important subfield of Causal Discovery, poses a major challenge. The lack of access to a well-defined ground truth for real-world data creates the need to rely on synthetic data for the evaluation of these methods. Existing benchmarks are limited in their scope, as they either are restricted to a "static" selection of data sets, or do not allow for a granular assessment of the methods' performance when commonly made assumptions are violated. We propose a flexible and simple to use framework for generating time series data, which is aimed at developing, evaluating, and benchmarking time series causal discovery methods. In particular, the framework can be used to fine tune novel methods on vast amounts of data, without "overfitting" them to a benchmark, but rather so they perform well in real-world use cases. Using our framework, we evaluate prominent time series causal discovery methods and demonstrate a notable degradation in performance when their assumptions are invalidated and their sensitivity to choice of hyperparameters. Finally, we propose future research directions and how our framework can support both researchers and practitioners.
description: 17 pages, 9 figures, for associated code and data sets, see https://github.com/causalens/cdml-neurips2020
Minkowski-Lyapunov Functions: Alternative Characterization and Implicit Representation
Creators: name: Raković, Saša V.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optimization and Control (math.OC)
subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics

description: An alternative characterization of Minkowski--Lyapunov functions is derived. The derived characterization enables a computationally efficient utilization of Minkowski--Lyapunov functions in arbitrary finite dimensions. Due to intrinsic duality, the developed results apply in a direct manner to the characterization and utilization of robust positively invariant sets.
description: 7 pages, 1 figure, 1 table, Accepted Automatica Technical Communique, Third version, Minor rewording and update of the acknowledgements (to reflect the acceptance of the paper)
Mining Architecture Tactics and Quality Attributes Knowledge in Stack Overflow
Creators: name: Bi, Tingting
name: Liang, Peng
name: Tang, Antony
name: Xia, Xin
Publisher: name: arXiv
Year: 2021
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: Context: Architecture Tactics (ATs) are architectural building blocks that provide general architectural solutions for addressing Quality Attributes (QAs) issues. Mining and analyzing QA-AT knowledge can help the software architecture community better understand architecture design. However, manually capturing and mining this knowledge is labor-intensive and difficult. Objective: Using Stack Overflow (SO) as our source, our main goals are to effectively mine such knowledge; and to have some sense of how developers use ATs with respect to QA concerns from related discussions. Methods: We applied a semi-automatic dictionary-based mining approach to extract the QA-AT posts in SO. With the mined QA-AT posts, we identified the relationships between ATs and QAs. Results: Our approach allow us to mine QA-AT knowledge effectively with an F-measure of 0.865 and Performance of 82.2%. Using this mining approach, we are able to discover architectural synonyms of QAs and ATs used by designers, from which we discover how developers apply ATs to address quality requirements. Conclusions: We make two contributions in this work: First, we demonstrated a semi-automatic approach to mine ATs and QAs from SO posts; Second, we identified little-known design relationships between QAs and ATs and grouped architectural design considerations to aid architects make architecture tactics design decisions.
description: Preprint accepted for publication in Journal of Systems and Software, 2021
Studio della relazione tra stress ambientale ed escrezione azotata in Danio rerio: un approccio comparato
Creators: name: Uliano, Erminia
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2011

description: La velocità di escrezione di ammonio e urea di un animale permette di valutarne il bilancio azotato e fornisce un utile strumento in grado di dare informazioni sugli effetti dei fattori ambientali e nutrizionali sul metabolismo proteico. Il presente studio si è rivolto alla valutazione, con approccio comparato, del rapporto fra stress ambientale ed escrezione azotata in acqua dolce, utilizzando il pesce zebra (Danio rerio) come specie modello, e confrontando le risposte alle seguenti condizioni di stress acuto: i. aumento di salinità; ii. abbassamento della temperatura; iii. ipossia funzionale indotta da nitrito; iv. ipossia ambientale. Le risposte del pesce zebra agli stress da salinità e temperatura sono state confrontate con quelle di una specie nota per la sua elevata tolleranza a questi tipi di stress, la gambusia (Gambusia affinis). Le risposte del pesce zebra agli stress da ipossia funzionale da nitrito e ipossia ambientale sono state confrontate con quelle di carassio dorato (Carassius auratus), una specie nota per la sua elevata tolleranza all’ipossia. Sono stati valutati gli effetti su metabolismo di routine, escrezione di ammonio e urea, e relativamente allo stress da ipossia funzionale o ambientale, anche le variazioni dei livelli ematici e muscolari di ammonio, urea, lattato e nitrito, nonché l’attività arginasica e di alcuni enzimi del ciclo dell’urea nel muscolo. Il risultato più significativo di questo studio è rappresentato dalla stimolazione dell’escrezione ureica in condizioni di stress, con l’urea che diventa il principale prodotto dell’escrezione azotata. Questa risposta è stata osservata solo in gambusia in risposta agli stress da temperatura e salinità, e sia in pesce zebra che in carassio dorato in seguito a ipossia funzionale o ambientale. La risposta allo stress da ipossia, sia funzionale che ambientale, ha dimostrato che l’aumentata escrezione ureica si può associare ad aumento dei livelli endogeni di urea, sia a livello ematico che muscolare e alla stimolazione dell’arginasi muscolare (arginolisi). Rimane da stabilire quanto questa risposta sia importante ai fini della tolleranza agli stress ambientali nei teleostei di acqua dolce.
Optical Properties of gases under planetary conditions: measurements and models
Creators: name: Stefani, Stefania
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2011

description: The conventional spectroscopic database, likely HITRAN, HITEMP, CDSD, does not contain information about optical properties of gases at high pressure and high temperature. Beyond while extensive data sets exist for radiative transfer calculations concerning the Earth’s atmosphere, important information and a thorough understanding of the behaviour of dense planetary atmospheres is still missing. For these reasons, we building up an experimental setup to characterized the optical properties of CO2, the principal gas of the Venus atmosphere, at high pressure and high temperature. The CO2 absorption spectra have been recorded by a Bruker-Vertex 80 Fourier Transform InfraRed (FT-IR) interferometer, able to work in a big spectral range, from 350 to 25000cm-1 (0.4 to 29 m ), with a relatively high spectral resolution, from 10 to 0.07 cm-1 . A special customer gas cell, certified to support pressure up to 350 bar and temperature about 300 °C, has been integrated with the interferometer.  To reproduce  same conditions found in the deep atmosphere of Venus, we have varied the pressure from 1 bar to 32 bar and the temperature from 294 K to 630 K. The results will be presented in this paper. Measurements have been compared with synthetic spectra obtained using three different models: one implementing a line by line calculation. The second takes into account the line mixing effect in the strong collision approximation.  The last one is a new approach to  the line mixing effect and far wings. These comparisons leads us to conclude that for gases under extreme conditions, the shape of the spectral lines no longer follows the conventional Voigt form. Another interesting phenomenon, occurring at high pressure is the collision induced absorption (CIA). Even when the pressure is of a few bar, we have observed the CO2 CIA forbidden bands for the symmetric 16O12C16O molecule.  The interaction of the molecules with their neighbours induces indeed a dipole moment which yields to pressure-induced-absorption bands. The observed CIA bands integrated intensities shows a quadratic dependence versus density and basically depends on the temperature. An aspect which is probably underestimated in typical remote sensing methods of radiative transfer inverse calculation is the CIA effect, which has to be more deeply studied and modelled. The impact of CIA is currently under study.
Pathways, Health, and Experiences of Homelessness among Foreign-Born Families
Creators: name: Polillo, Alexia
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2019
Subjects: Homelessness
Shelter
Families
Immigrant
Refugee

description: This thesis describes three studies that examined the experiences of foreign-born families staying in the emergency shelter system in Ottawa, Ontario, Canada. In the first study, timeline mapping and qualitative interviews were conducted with 13 Canadian-born and 23 foreign-born homeless families to understand the needs of these families and their pathways into homelessness. In the second study, data were drawn from quantitative interviews with 75 heads of families who were experiencing homelessness in Ottawa, Ontario, Canada. This cross-sectional study examined differences in mental and physical health, chronic medical conditions, access to care, unmet healthcare needs, and diagnoses of mental disorders between foreign-born and Canadian-born families. In the third study, in-depth interviews were used to explore the shelter experiences of 16 foreign-born adolescents and young adults (aged 16-21) who were residing in emergency shelters with their families. Overall, findings from the three studies indicated that foreign-born families faced unique challenges before and during their homelessness. Moreover, some of these challenges were associated with adjusting to life in Canada. Challenges, such as staying housed and financially stable were common and led families to require shelter services. However, foreign-born families also reported positive experiences that may buffer some of the negative impacts associated with immigrating to a new country, housing instability, and homelessness. In the first study, more heterogeneity was found in the homeless pathways reported by foreign-born families than by Canadian-born families. The experiences they had prior to homelessness were also different across themes of poverty, health and substance use, interpersonal challenges, victimization, traumatic experiences, and stressful life events. In the second study, foreign-born heads of families reported better mental health and fewer chronic medical conditions than did Canadian-born heads of families with a significantly lower proportion of foreign-born participants reporting having been diagnosed with a mental disorder. In the third study, youth described homeless shelters as stressful environments but also found that the shelters provided support to them and their families. Youth also discussed the various strategies they used to cope with the challenges of shelter life. Findings from the studies suggest that foreign-born families experiencing homelessness are a heterogeneous group with diverse needs and experiences who may require services that differ in type, duration, and intensity than those that may be required by Canadian-born families.
Quantum Information in Geometric Quantum Mechanics
Creators: name: Volkert, Georg Friedrich
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2011

description: A fundamental starting point in quantum information theory is the consideration of the von Neumann entropy and its generalization to relative quantum entropies. A particular feature of quantum relative entropies is their relation via their Hessian to monotonic Riemannian metrics on the dense set of invertible mixed quantum states (Lesniewski and Ruskai 1999). These metrics are also known as quantum Fisher information metrics and provide a direct link to quantum estimation theory (Helstrom 1969). Quantum Fisher information metrics which are extendable to pure states coincide all with the Fubini Study metric of the projective Hilbert space of complex rays.

This theses outlines possible advantages of an inverse approach to quantum information theory, by starting with the Fubini Study metric rather then with the von Neumann entropy.
This is done in a first step by associating to the Fubini Study metric a covariant and a contra-variant structure on the punctured Hilbert space as being available in the geometric formulation of quantum mechanics. While the contra-variant structure leads to a quantum version of the Cramér-Rao inequality for general 1-dimensional submanifolds of pure states, the covariant structure provides alternative entanglement monotones by identifying an inner product on the pullback tensor fields on local unitary group orbits of quantum states. It is shown in the case of two qubits that these monotones yield a more efficient estimation of entanglement than standard measures from the literature as those associated with the linearization of the von Neumann entropy.
title: От λοιμός (Procop. De bellis. IV.14, 5–6; II. 23) к pestis inguinaria (Paul. Diac. Hist. langobard. IV. 4): восприятие «Юстиниановой чумы» греческими и латинскими авторами VI–VIII вв.
title: From λοιμός (Procop. De bellis. IV.14, 5–6; II. 23) to pestis inguinaria (Paul. Diac. Hist. Langobard. IV. 4): perception of "Justinian's plague" by Greek and Latin authors of the 6th–8th centuries
Creators: name: Зибаев, А. В.
Publisher: name: Мнемон 22 (2022)
Year: 2022

description: В предлагаемой статье рассматривается изменение восприятия чумы у позднеантичных и раннесредневековых авторов VI–VIII вв. Наибольшее внимание уделено разбору наименований болезни в греческой и латинской письменной традиции, которые восходят к авторам классической древности. Рассказы свидетелей трагедии позволяют с высокой вероятностью проследить процесс изменения отношения к эпидемии в течение 70–80 лет: от паники до кратких упоминаний чумы к сер. VIII в. Все это не могло не оказать значительного влияния на процесс осмысления чумы авторами последующего времени и на формирование тех терминов, которые будут использоваться в XIV в. для обозначения «Черной смерти».
description: This article examines the change in the perception of the plague among the late antique and early medieval authors of the 6th–8th centuries. The greatest attention is paid to the analysis of the names of the disease in the Greek and Latin written tradition, dating back to the authors of classical antiquity. Descriptions of witnesses to the tragedy make it possible with a high probability to trace the process of changing attitudes towards the epidemic over the course of 70–80 years: from panic at the very beginning to brief mentions of the plague in mid. VIII century All this could not but have a significant impact on the process of understanding the plague by the authors of the subsequent time and on the formation of terms that will be used in the XIV century to denote the "Black Death".
Magnon-polarons in van der Waals antiferromagnet FePS3
Creators: name: Vaclavkova, D.
name: Palit, M.
name: Wyzula, J.
name: Ghosh, S.
name: Delhomme, A.
name: Maity, S.
name: Kapuscinski, P.
name: Ghosh, A.
name: Veis, M.
name: Grzeszczyk, M.
name: Faugeras, C.
name: Orlita, M.
name: Datta, S.
name: Potemski, M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: The hybridization of magnons (spin waves) with phonons, if sufficiently strong and comprising long wavelength excitations, may offer a new playground when manipulating the magnetically ordered systems with light. Applying a magnetic field to a quasi-2D antiferromagnet, FePS3, we tune the magnon-gap excitation towards coincidence with the initially lower-in-energy phonon modes. Hybrid magnon-phonon modes, the magnon polarons are unveiled with demonstration of a pronounced avoided crossing between the otherwise bare magnon and phonon excitations. The magnon polarons in FePS3 are primary traced with Raman scattering experiments, but, as we show, they also couple directly to terahertz photons, what evokes their further explorations in the domain of antiferromagnetic optospintronics.
description: 10 pages, 4 figures and Supplementary Materials, to be published in Phys. Rev. B
title: Таманская экспедиция ГАИМК (1930 – 1931 гг.). Вопросы недолгой истории
title: Taman expedition of the SAHMC (1930–1931). Questions of a short history
Creators: name: Виноградов, Ю. А.
Publisher: name: Мнемон 22 (2022)
Year: 2022

description: Статья посвящена истории Таманской экспедиции ГАИИК. Она была рассчитана на долгую перспективу и должна была стать школой Академии. Однако её деятельность была ограничена только двумя годами. Основная причина недолгой истории экспедиции заключается в претензии руководства ГАИМК монополизировать археологические исследования в стране, нежелании идти на какие-либо соглашения с московскими коллегами.
description: The article is devoted to the history of the Taman expedition of the SAHMC. It was designed for the long term and was to become the school of the Academy. However, her activity was limited to only two years. The main reason for the short history of the expedition lies in the claims of the leadership of the SAHMC to monopolize archaeological research in the Soviet Union, unwillingness to make any agreements with their Moscow colleagues.
title: Отзыв О. О. Крюгера на рукопись С. А. Жебелева «История Русского археологического общества за третью четверть века своего существования»
title: O. O. Kruger's review of S. A. Zhebelev's manuscript “The History of the Russian Archaeological Society for the third quarter of a century of its existence”
Creators: name: Тихонов, И. Л.
Publisher: name: Мнемон 22 (2022)
Year: 2022

description: В Центральном государственном архиве Санкт-Петербурга в фонде № 7154 (Секретная часть ГАИМК) был найден отзыв папиролога, эпиграфиста, члена партийной организации ГАИМК О. О. Крюгера на рукопись работы С. А. Жебелева «История Русского археологического общества за третью четверть века своего существования», написанный в марте 1933 г. Серьезного научного разбора труда выдающегося антиковеда, много внимания уделявшего историографии, в отзыве нет. Есть политические обвинения в ностальгии по «старому режиму», в воспевании монархического прошлого, в раболепстве перед представителями аристократии. Автор отзыва заявляет, что «это не исторический очерк, а антисоветская политическая брошюра». В статье анализируются взаимоотношения между двумя учеными и социально-политическая атмосфера  начала 1930-х гг. в ГАИМК, повлиявшая на появление такого отзыва.
description: O. O. Kruger's review of S. A. Zhebelev's manuscript “The History of the Russian Archaeological Society for the third quarter of a century of its existence” was found in The Central State Archive of St. Petersburg in the Fund No. 7154 (Secret part of the GAIMK). It was written in 1933. There is no serious scientific analysis of the work of the great antiquarian scholar, who paid much attention to historiography, in the review. There are political accusations of nostalgia for the "old regime", of glorifying the monarchic past, of subservience to representatives of the aristocracy. The author of the review wrote "this is not a historical essay, but an anti-Soviet political pamphlet". The article analyzes the relationship between the two scientists and the socio-political atmosphere of the early 1930s. in GAIMK, which influenced the appearance of the review.
title: Ксенофонт и аспирантский семинар Э. Д. Фролова
title: Xenophon and E.D. Frolov’s PhD Seminar
Creators: name: Печатнова, Л. Г.
Publisher: name: Мнемон 22 (2022)
Year: 2022

description: Эти заметки представляют собой воспоминания автора о языковом семинаре Э.Д. Фролова. Он несколько десятилетий еженедельно читал с аспирантами нашей кафедры древних авторов, сопровождая чтение ценным филологическим и историческим комментарием.  Довольно часто Э. Д. Фролов выбирал для чтения произведения Ксенофонта, своего любимого автора. О его манере вести занятия можно судить по стенограмме некоторых его комментариев к «Греческой истории» Ксенофонта.
description: These notes represent the author’s memories of the language seminar of E.D. Frolov. For several decades, he read ancient authors weekly with the graduate students of our department, accompanying the reading with valuable philological and historical comments. Quite often E.D. Frolov preferred to read the works of Xenophon, his favorite author. His teaching style can be judged from the transcript of some of his comments on Xenophon’s “Greek History”.
Giant Rydberg excitons in Cu$_{2}$O probed by photoluminescence excitation spectroscopy
Creators: name: Versteegh, Marijn A. M.
name: Steinhauer, Stephan
name: Bajo, Josip
name: Lettner, Thomas
name: Soro, Ariadna
name: Romanova, Alena
name: Gyger, Samuel
name: Schweickert, Lucas
name: Mysyrowicz, André
name: Zwiller, Val
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Optics (physics.optics)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Rydberg excitons are, with their ultrastrong mutual interactions, giant optical nonlinearities, and very high sensitivity to external fields, promising for applications in quantum sensing and nonlinear optics at the single-photon level. To design quantum applications it is necessary to know how Rydberg excitons and other excited states relax to lower-lying exciton states. Here, we present photoluminescence excitation spectroscopy as a method to probe transition probabilities from various excitonic states in cuprous oxide, and we show giant Rydberg excitons at $T=38$ mK with principal quantum numbers up to $n=30$, corresponding to a calculated diameter of 3 $μ$m.
description: 11 pages, 4 figures
Signs of eccentricity in two gravitational-wave signals may indicate a sub-population of dynamically assembled binary black holes
Creators: name: Romero-Shaw, Isobel M.
name: Lasky, Paul D.
name: Thrane, Eric
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The orbital eccentricity of a merging binary black hole leaves an imprint on the associated gravitational-wave signal that can reveal whether the binary formed in isolation or in a dynamical environment, such as the core of a dense star cluster. We present measurements of the eccentricity of 26 binary black hole mergers in the second LIGO--Virgo gravitational-wave transient catalog, updating the total number of binary black holes analysed for orbital eccentricity to 36. Using the \texttt{SEOBNRE} waveform, we find the data for GW190620A is poorly explained by the zero-eccentricity hypothesis (frequentist $p$-value $\lesssim 0.1\%$). Using a log-uniform prior on eccentricity, the eccentricity at $\unit[10]{Hz}$ for GW190620A is constrained to $e_{10}\geq0.05$ ($0.1$) at $74\%$ ($65\%$) credibility. With this log-uniform prior, we obtain a $90\%$ credible lower eccentricity limit of $0.001$, while assuming a uniform prior leads the data to prefer $e_{10} \geq 0.11$ at $90\%$ credibility. This is the second measurement of a binary black hole system with statistical support for non-zero eccentricity; the intermediate-mass black hole merger GW190521 was the first. Interpretation of these two events is currently complicated by waveform systematics; we are unable to simultaneously model the effects of relativistic precession and eccentricity. However, if these two events are, in fact, eccentric mergers, then there are potentially many more dynamically assembled mergers in the LIGO--Virgo catalog without measurable eccentricity; $\gtrsim 27\%$ of the observed LIGO--Virgo binaries may have been assembled dynamically in dense stellar environments ($95\%$ credibility).
Incentive compatible compensation mechanism for centrally planned industry with multiple agents and communiction
Creators: name: Zhang, Guochang
Publisher: name: University of British Columbia
Year: 2010

description: This thesis applies the existing agency theory into the problem of production planning in a centrally planned industry. The planner's objective is to maximize social welfare contributed by the industry, while the firms individually want to maximize utility over money compensation minus disutility over effort. The problem contains both moral hazard and adverse selection because each agent privately observes a predecision information about the production process. A model is built for determining the optimal incentive compatible scheme. The analysis starts with the problem of fixed proportions production. An optimal incentive compatible scheme is first derived in single agent settings. It is then extended to multiple agent settings. Under the optimal incentive scheme, the principal is able to derive all the rent. The solution is the first-best when the agents are all risk neutral, and strictly second-best otherwise. The subgaming issues amongst the agents are investigated. When the agents are not cooperative, a sufficient condition is given for the incentive scheme to be effective, i.e., the equilibrium induced by the scheme is implementable. It is also concluded that, if the agents are able to cooperate, there always exist some state realizations under which the scheme is not effective. Finally, a different type of production problem, namely, production with substitutable inputs, are studied. And an incentive compatible compensation scheme is again proposed.
The distribution of somatostatin immunoreactivity in the subcortical auditory system of three mammalian species
Creators: name: Von Krosigk, Marcus
Publisher: name: University of British Columbia
Year: 2010

description: Using current immunohistochemical methods the distribution of somatostatin was examined in the subcortical auditory pathways of three mammalian species. The distributions of immunoreactivity were similar in some respects and quite varied in others. The differences and similarities could be considered in the context of three categories of previously described projections: ascending auditory pathways; ascending auditory and somatosensory pathways; and descending auditory pathways. The greatest heterogeneity was associated with immunostaining in the ascending auditory nuclei; this was only found in rodents. Immunolabelled cells were seen in the rat spherical cell region of the anterior ventral cochlear nucleus (SC-AVCN) and in the dorsal region of the ventral nucleus of the lateral lemniscus (VLL), while immunoreactive puncta were prominent in the MNTB (medial nucleus of the trapezoid body). In the guinea pig a density of SOM-IR cells, much lower than that of the rat, was seen in the SC-AVCN while immunoreactive neuropil was only seen apposing the principal cells of the medial superior olive. In all species somatostatin immunoreactivity was associated with the ascending projection from immunolabelled cells in the intercollicular area (ICA), and possibly the external cortex of the inferior colliculus (EC), which project to the midbrain reticular formation (MRF), a site of common imraunolabelled neuropil. These regions are associated with both ascending auditory and somatosensory information. In the descending auditory regions somatostatin immunoreactivity was prominent in all species examined. All species showed immunolabelled cells in the dorsal and external cortices of the inferior colliculus. Cells seen in the medial VLL region do not appear to form ascending pathways and the VLL is known to provide descending pathways. All species showed immunoreactive neuropil in the medial VLL, the dorsal periolivary regions of the superior olivary complex and in the ventral nucleus of the trapezoid body. Comparison of the immunoreactivities, both similarities and differences, to known projections, is used to describe the possible projections of somatostatin immunoreactive cells. The discussion includes some speculation on the possible coexistence of somatostatin with other peptides and its possible functional significance. The possibility of descending mechanisms of cortical and subcortical auditory control of the cochlear nucleus and cochlea is derived from a comparison of peptide and classical neurotransmitter distributions with physiology and pharmacology.
ผลของภาวะเค็มต่อการสังเคราะห์ด้วยแสงและการเจริญเติบโตในข้าวสายพันธุ์ทนเค็มที่ได้จากประชากร CSSL (Effect of Salt Stress on Photosynthesis and Growth in Salt-tolerant Rice Lines Obtained from CSSL Population)
Creators: name: พนิตา ชุติมานุกูล
Publisher: name: Genetics Society of Thailand
Year: 2013
Subjects: Oryza sativa L., KDML105, photosynthetic, salt stress

description: S1 (Special Issue 1), S.1, Thai Journal of Genetics
AstroSat/UVIT observations of IC4329A: Constraining the accretion disc inner radius
Creators: name: Dewangan, G. C.
name: Tripathi, P.
name: Papadakis, I. E.
name: Singh, K. P.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present a study of far and near-ultraviolet emission from the accretion disk in a powerful Seyfert 1 galaxy IC4329A using observations performed with the Ultraviolet Imaging Telescope (UVIT) onboard AstroSat. These data provide the highest spatial resolution and deepest images of IC4329A in the far and near UV bands acquired to date. The excellent spatial resolution of the UVIT data has allowed us to accurately separate the extended emission from the host galaxy and the AGN emission in the far and near UV bands. We derive the intrinsic AGN flux after correcting for the Galactic and internal reddening, as well as for the contribution of emission lines from the broad and narrow-line regions. The intrinsic UV continuum emission shows a marked deficit compared to that expected from the "standard" models of the accretion disk around an estimated black hole mass of 1-2x10^8Msun when the disk extends to the innermost stable circular orbit. We find that the intrinsic UV continuum is fully consistent with the standard disk models, but only if the disk emits from distances larger than 80-150 gravitational radii.
description: Accepted for publication in MNRAS, 10 pages, 5 figures
การแสดงออกของยีน TPT1 ในเซลล์เนื้อเยื่อในโพรงประสาทฟันมนุษย์เมื่อได้รับความร้อน (The Expression of TPT1 in Heat-treated Human Pulp Cells)
Creators: name: คณัสนันท์ จิรโชติกูล
Publisher: name: Genetics Society of Thailand
Year: 2013
Subjects: Translationally controlled tumor protein, TPT1, Human dental pulp cells

description: S1 (Special Issue 1), S.1, Thai Journal of Genetics
Quantized Berry Phases of a Spin-1/2 Frustrated Two-Leg Ladder with Four-Spin Exchange
Creators: name: Maruyama, I.
name: Hirano, T.
name: Hatsugai, Y.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: A spin-1/2 frustrated two-leg ladder with four-spin exchange interaction is studied by quantized Berry phases. We found that the Berry phase successfully characterizes the Haldane phase in addition to the rung-singlet phase, and the dominant vector-chirality phase. The Hamiltonian of the Haldane phase is topologically identical to the S=1 antiferromagnetic Heisenberg chain. Decoupled models connected to the dominant vector-chirality phase revealed that the local object identified by the non-trivial ($π$) Berry phase is the direct product of two diagonal singlets.
description: 4 pages, 3 figures
title: Art and Peripheral Digital Activity
Creators: name: Meyer, Jon
Publisher: name: Goldsmiths, University of London
Year: 2019

description: As digital technologies have become more pervasive, this thesis argues, there has been an accompanying expansion of a phenomenon here called ‘peripheral digital activity.’ This activity includes unplanned and unexpected events that arise in conjunction with digital technologies and that are poorly classified using conventional notions of ‘interaction,’ ‘user experience,’ or purposeful ‘use.’ To ground this idea, the thesis looks to artistic strategies that might critically investigate the concept of peripheral digital activity, in this case arguing that Alfred North Whitehead’s philosophy of organism, with its emphasis on whole-part relations, holds special relevance. The thesis proposes an original Whitehead-centred analysis of art as a manner or ‘mode’ of decision procedure. Developing this analysis via Whitehead’s notion of actual entities and through a discussion of digital function, the thesis examines the practice of contemporary artist Tino Sehgal. Reading through theories of social and participatory art, the thesis arrives at Sehgal’s proposition of ‘cleaner conceptualism.’ Outlining a systems-based interpretation of cleaner conceptualism, Sehgal’s constructed situations are contrasted with the idea of art as a decision procedure proposed by Sol LeWitt. Whereas LeWitt organizes his idea of decision procedures as a dualist critique of instrumental rationalism, Sehgal creates a new mode of monist decision procedure. Using this monist strategy, Sehgal mobilises participants, collectors, and curators in a way that is entangled with and presupposes digital function even as his practice foregrounds non-technological body-to-body human engagement. The thesis claims that Sehgal’s practice is one strategy for critically investigating the effects of peripheral digital activity. Proposing directions for future research, the thesis ends with a Coda that provides a preliminary analysis of the paintings Laura Owens as a diagnostic tool for investigating digital functional augmentation.
Surface bound states and spin currents in non-centrosymmetric superconductors
Creators: name: Vorontsov, A. B.
name: Vekhter, I.
name: Eschrig, M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We investigate the influence of spin-orbit coupling in a non-centrosymmetric superconductor on its ground state properties near a surface. We determine the spectrum of Andreev bound states due to surface-induced mixing of bands with opposite spin helicities for a Rashba-type spin-orbit coupling. We find a qualitative change of the Andreev spectrum when we account for the suppression of the order parameter near the surface, leading to clear signatures in the surface density of states. We also compute the spin current at the surface, which has spin polarization normal to that of the bulk current. The magnitude of the current at the surface is enhanced in the normal state compared to the bulk, and even further enlarged in the superconducting phase. The particle and hole coherence amplitudes show Faraday-like rotations of the spin along quasiparticle trajectories.
description: 4 pages, 4 figures