cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Κεραμική από την οικοδομική νησίδα του Υαλουργείου της παλαιοχριστιανικής πόλης των Φιλίππων
Creators: name: Ζαχαριάδης, Σταύρος Λ.
Publisher: name: Aristotle University of Thessaloniki
Year: 2020
Subjects: Φίλιπποι
Κεραμική
Ύστερη αρχαιότητα
Τοπική παραγωγή
Philippi
Pottery
Late antiquity
Local production

description: Η πόλη των Φιλίππων αποτελεί ένα από τα σημαντικότερα – και το καλύτερα διατηρημένο – ανεσκαμμένα αστικά σύνολα της ύστερης αρχαιότητας στον βορειοελλαδικό χώρο. Το κτήριο που καταλαμβάνει το μεγαλύτερο μέρος μιας ολόκληρης οικοδομικής νησίδας στα βορειοανατολικά της τειχισμένης πόλης, λειτουργεί αδιάληπτα τουλάχιστον από τον 3ο αιώνα μέχρι και τον 7ο. Κατασκευάζεται αρχικά ως ένα πολυτελές οίκημα, ενώ στις επόμενες φάσεις του μετατρέπεται σε εργαστηριακό χώρο, φιλοξενώντας και ένα υαλουργείο Η κεραμική από το κτήριο αυτό αποτελείται, σε μεγάλο ποσοστό, από εισηγμένα προϊόντα όλων σχεδόν των γνωστών κέντρων παραγωγής της περιόδου αυτής, αλλά και μεγάλη ποσότητα αγγείων τα οποία θα πρέπει μάλλον να αποδοθούν σε κάποιο τοπικό κέντρο. Μεταξύ των τοπικών προϊόντων θα πρέπει να συμπεριληφθούν και αρκετά παραδείγματα εφυαλωμένης κεραμικής, που παράγεται πιθανότατα από τα ίδια εργαστήρια, αλλά και ένα μικρό ποσοστό χειροποίητων αγγείων που αντιπροσωπεύουν την πιο όψιμη φάση του χώρου. Παρουσιάζονται τύποι και παραγωγές που μέχρι τώρα δεν είχαν επισημανθεί ή είχαν ελάχιστα μελετηθεί στην περιοχή και διευρύνουν τις γνώσεις μας για την τοπική παραγωγή, για το εμπορικό δίκτυο που συνδέει την πόλη με την υπόλοιπη Μεσόγειο, αλλά και για τους μετασχηματισμούς που σημειώνονται στην οικονομική δραστηριότητά πόλης από την ύστερη ρωμαϊκή εποχή μέχρι τους πρώιμους βυζαντινούς χρόνους.
description: The city of Philippi is one of the most important, and the best preserved and extensively excavated urban contexts in northern Greece. The building occupying almost an entire insulla in the northeastern part of the city covers a large time span, from the 3rd to the 7th century. Originally built as a luxurious house, it was turned into an industrial compound, with a glasswork factory installed in it. The pottery from this context includes numerous imports from almost every important production center of this period, as well as local products. Amongst the latter one should include several glazed vessels, produced in the same workshops as the common ware, and a limited quantity of handmade ware, from the final period of this building. Numerous productions and specific types are presented that have not been identified before or have been neglected in this area, enhancing the information on local production, trade routes, connecting the area with the rest of the Mediterranean, as well as on the transformations occurring in the economy of the city from the late roman to the early byzantine period.
A study of level crossing effects in TCNQ salts
Creators: name: Cabañas, Francisco Xavier
Publisher: name: University of British Columbia
Year: 2010

description: ESR results for DEM(TCNQ)₂ and for MEM(TCNQ)₂ are presented as examples of TCNQ salts with and without level crossing effects. In the case of DEM(TCNQ)₂ we are performing ESR on a system with two types of spins. The latter are due to the two kinds of stacks of the acceptor TCNQ molecules in DEM(TCNQ)₂. The level crossing occurs when the g value of these two kinds of electrons are the same. This is compared to the case of MEM(TCNQ)₂ where there is only one kind of TCNQ stack and consequently no level crossing effect. It is found that g values and susceptibilities of the ESR spectra for DEM(TCNQ)₂ can be fitted very well to an interaction between the stacks of the form J ∑i,j,Si,Sj; with J > 0. This gives an antiferromagnetic coupling between every spin on one type of stack with every spin on the other type of stack. This type of interaction is also in qualitative agreement with the published results for HMM(TCNQ)₂. The experimental results in DEM(TCNQ)₂ and MEM(TCNQ)₂ also show that there are small but significant differences in the g tensors when the temperature or the crystalline environment are changed, and consequently the g tensor in these compounds does not depend only on the orientation of TCNQ molecule in the magnetic field as previously assumed. These differences in g are typically less than 2 x 10⁻⁴.
Optimality and uniqueness of the (4,10,1/6) spherical code
Creators: name: Bachoc, Christine
name: Vallentin, Frank
Publisher: name: arXiv
Year: 2007
Subjects: subject: Metric Geometry (math.MG)
subject: FOS: Mathematics
subject: 52C17, 90C22

description: Linear programming bounds provide an elegant method to prove optimality and uniqueness of an (n,N,t) spherical code. However, this method does not apply to the parameters (4,10,1/6). We use semidefinite programming bounds instead to show that the Petersen code, which consists of the midpoints of the edges of the regular simplex in dimension 4, is the unique (4,10,1/6) spherical code.
description: 12 pages, (v2) several small changes and corrections suggested by referees, accepted in Journal of Combinatorial Theory, Series A
title: Fish Communities On The Slope Of The Eastern Norwegian Sea
Creators: name: Bergstadt, O. A.
name: Bjelland, O.
name: Gordon, J.D.M.
Publisher: name: ASC 1998 - O
Year: 2024
Subjects: Fisheries and aquaculture
Ecosystem observation, processes and dynamics

description: No abstracts are to be cited without prior reference to the author.Bottom trawl data from the depth interval 300 -2050 m on the slope off Norway were analysed to study distribution of fish biomass and the associated species assemblages. It is hypothesised that the pronounced hydrographic front between the warm Atlantic Watermass and the cold Norwegian Sea Deep-water, combined with a declining food supply with depth and distance from the shelf, structure the assemblages on the continental slope of the eastern N01wegian Sea. From a high level at the shelf edge and upper slope, the fish biomass declined abrnptly at about 720 m when crossing the 0°C-isotherm associated with the hydrographic front. Beneath the frontal zone, the fish biomass was only 11 % of that above it and decreased further with increasing depth. In upper slope waters, the fish biomass increased with increasing latitude. Arctic species such as Lycodes frigidus and Paraliparis bathybius were dominant in the deep cold slope waters. The high fish biomass associated with the steep temperature gradient at 600-720 m was mainly attributable to a few large and/or abundant boreo-arctic species, i.e. Greenland halibut Reinhardtius hippoglossoides, redfishes Sebastes mentella and S. marinus, roughhead grenadier Macrourus berg/ax, and Raja hyperborea. In the shallower and warmer upper slope waters a species assemblage occurred which resembled that associated with adjacent deep shelf areas strongly influenced by the Atlantic Watermass.
Diagrammatic approach to non-Gaussianity from inflation
Creators: name: Byrnes, Christian T.
name: Koyama, Kazuya
name: Sasaki, Misao
name: Wands, David
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We present Feynman type diagrams for calculating the n-point function of the primordial curvature perturbation in terms of scalar field perturbations during inflation. The diagrams can be used to evaluate the corresponding terms in the n-point function at tree level or any required loop level. Rules are presented for drawing the diagrams and writing down the corresponding terms in real space and Fourier space. We show that vertices can be renormalised to automatically account for diagrams with dressed vertices. We apply these rules to calculate the primordial power spectrum up to two loops, the bispectrum including loop corrections, and the trispectrum.
description: 17 pages, 13 figures. v2: Comments and references added, v3: Introduction expanded, subsection on evaluating loop diagrams added, minor errors corrected, references added
title: Fecundity Of Greenland Halibut (Reinhardtius Hippoglossoides)In The North East Arctic
Creators: name: Gundersen, A.C.
name: Kjesbu, O.S.
name: Stene, A.
name: Nedreaas, K.H.
Publisher: name: ASC 1998 - O
Year: 2024
Subjects: Fisheries and aquaculture
Ecosystem observation, processes and dynamics

description: No abstracts are to be cited without prior reference to the author.Because of recruitment failures and a historic low spawning stock biomass, the Northeast Arctic Greenland halibut (Reinhardtius hippoglossoides) stock has been strongly regulated in the 1990-ies. Fecundity, which is defined as the number ofvitellogenetic oocytes developing in each female prior to the spawning season, is important for understanding spawning-stock­recruitment relationships. The relation between the fecundity and length for Northeast Arctic Greenland halibut stock has not been previously established. A total of95 Greenland halibut ovaries, collected in September 1996 in the Norwegian and Barents Sea were analysed. The Greenland halibut were mainly in maturity stage 4, that is vitellogenic oocyte size between 2 and 4 mm in diameter. The estimated mean gonadosomatic index (GSI) was 7.5% (range 2.0-13.5%). Fecundity ranged from 6,800 to 70,500 eggs per female.
Concepts of value in the archival appraisal literature : an historical and critical analysis
Creators: name: Klumpenhouwer, Richard
Publisher: name: University of British Columbia
Year: 2010

description: Archival appraisal is the most challenging and at the same time the most improtant task performed by archivists. The complex meaning, varied form, and massive volume of modern documentary information, which now occupies the lion's share of archivists' attention, present immense challenges during the appraisal process. Yet it is precisely these factors which make archival appraisal such an important activity, for it is the responsibility of archivists to preserve and make available a documentary record that is both usable and complete. This thesis works on the premise that archival appraisal involves a process of applying value concepts to the preservation or destruction of records. Therefore, it is a critical examination of the nature and development of value concepts throughout the history of archives in western civilization from the Middle Ages to the recent past. The preservation of archives before the late nineteenth century depended upon the political, legal, and military values of the original record-creators which persisted over a relatively long period of time. From the 1880s to the 1930s, the value of archives as historical sources became dominant and appraisal followed theories of archival administation based on historicist concepts. From 1930 to 1980, the quality and quantity of records being generated by institutions forced archivists to develop management systems for appraisal and to define value which best conformed to the structures and processes of such systems. Especially in the last two chapters, which deal with modern archival appraisal in the United States and Europe respectively, the analysis of theories and practices serves to reveal inconsistencies and problems in the application of value concepts. From such an examination, certain patterns emerge which suggest directions for the future development of archival appraisal theory.
Extragalactic HI 21-cm absorption line observations with the Five-hundred-meter Aperture Spherical radio Telescope
Creators: name: Zhang, Bo
name: Zhu, Ming
name: Wu, Zhong-Zu
name: Yu, Qing-Zheng
name: Jiang, Peng
name: Yue, You-Ling
name: Huang, Meng-Lin
name: Hao, Qiao-Li
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present a pilot study of extragalactic HI 21-cm absorption lines using the Five-hundred-meter Aperture Spherical radio Telescope (FAST). We observed 5 continuum sources with HI absorption features firstly identified in the 40% data release of the Arecibo Legacy Fast Arecibo L-Band Feed Array (ALFA) Survey (ALFALFA), including two systems later detected by the Westerbork Synthesis Radio Telescope (WSRT). Most of our observations were carried out during the FAST commissioning phase, and we have tested different observing modes, as well as data reduction methods, to produce the best spectra. Our observations successfully confirmed the existence of HI absorption lines in all these systems, including two sources that were marginally detected by ALFALFA. We fitted the HI profiles with single or double of Gaussian functions, and calculated the HI column densities of each source. The HI absorption profiles obtained by FAST show much higher spectral resolution and higher S/N ratio than the existing data in the literature, thus demonstrating the power of FAST in revealing detailed structures of HI absorption lines. Our pilot observations and tests have enabled us to develop a strategy to search for HI absorption sources using the data from the FAST extragalactic HI survey, which is one of the key projects undertaken at FAST. We expect that over 1,500 extragalactic HI absorbing systems could be detected with survey data, based on sensitivity level we achieved in pilot observations.
description: 13 pages, 14 figures. Accepted by Monthly Notices of the Royal Astronomical Society
Industrial Expectation from MBA Students: Some reflection with reference to RTM Nagpur University, Nagpur
Creators: name: Shahare, Padmakar
Publisher: name: figshare
Year: 2021
Subjects: subject: 150301 Business Information Management (incl. Records, Knowledge and Information Management, and Intelligence)
subject: FOS: Economics and business
subject: 150304 Entrepreneurship

description: The paper explores the gap between industry expectations from management students fromRTM Nagpur University. Also the outcome of present research paper is expected to benefitacademicians like, teachers and students as it will help them in understanding the creativityin Management curriculum in the context of the contemporary local and global economicscenario
Probing the Geometry of Warped String Compactifications at the LHC
Creators: name: Shiu, Gary
name: Underwood, Bret
name: Walker, Devin G. E.
name: Zurek, Kathryn M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Warped string compactifications, characterized by non-singular behavior of the metric in the infrared (IR), feature departures from the usual anti-de Sitter warped extra dimensions. We study the implications of the smooth IR cutoff for Randall-Sundrum (RS) type models. We find that the phenomenology of the KK gravitons (including their masses and couplings) depends sensitively on the precise shape of the warp factor in the IR. In particular, we analyze the warped deformed conifold and find that the spectrum differs significantly from that of RS, and present a simple prescription (a mass gap ansatz) which can be used to study the phenomenology of IR modifications to 5-d warped extra dimensions.
description: 4 pages, 4 figures; v2. typos corrected, references added, improved resolution of Figure 2
Categorification of Wedderburn's basis for \mathbb{C}[S_n]
Creators: name: Mazorchuk, Volodymyr
name: Stroppel, Catharina
Publisher: name: arXiv
Year: 2007
Subjects: subject: Representation Theory (math.RT)
subject: Group Theory (math.GR)
subject: FOS: Mathematics
subject: 17B10, 20B30

description: M. Neunh{ö}ffer studies in \cite{Ne} a certain basis of $\mathbb{C}[S_n]$ with the origins in \cite{Lu} and shows that this basis is in fact Wedderburn's basis. In particular, in this basis the right regular representation of $S_n$ decomposes into a direct sum of irreducible representations (i.e. Specht or cell modules). In the present paper we rediscover essentially the same basis with a categorical origin coming from projective-injective modules in certain subcategories of the BGG-category $\mathcal{O}$. An important role in our arguments is played by the dominant projective module in each of these categories. As a biproduct of the study of this dominant projective module we show that {\it Kostant's problem} (\cite{Jo}) has a negative answer for some simple highest weight module over the Lie algebra $\mathfrak{sl}_4$, which disproves the general belief that Kostant's problem should have a positive answer for all simple highest weight modules in type $A$.
description: 11 pages, some corrections, to appear in Arch. Math
Elemental topological Dirac semimetal α-Sn with high quantum mobility
Creators: name: Anh, Le Duc
name: Takase, Kengo
name: Chiba, Takahiro
name: Kota, Yohei
name: Takiguchi, Kosuke
name: Tanaka, Masaaki
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: α-Sn with a diamond-type crystal structure provides an ideal avenue to investigate novel topological properties owing to its rich diagram of topological phases and simple elemental material structure. Thus far, however, realisation of high-quality α-Sn remains a challenge, which limits our understanding of its quantum transport properties and device applications. Here, we present epitaxial growth of α-Sn on InSb (001) with the highest quality thus far and reveal that it is a topological Dirac semimetal (TDS) by quantum transport investigations together with first-principles calculations. We realise unprecedentedly high quantum mobilities of both the surface state (30000 cm^2/Vs), which is ten times higher than the previously reported values, and the bulk heavy-hole (HH) state (1700 cm^2/Vs), which has never been obtained experimentally. These excellent features allow us, for the first time, to quantitatively characterise the nontrivial interfacial and bulk band structure of α-Sn via Shubnikov-de Haas oscillations at various temperatures and under various magnetic field directions. These results reveal the existence of a topological surface state (TSS) and a bulk HH band, both with nontrivial phase shifts, indicating that the TDS phase of α-Sn is established. Furthermore, we demonstrate a crossover from the TDS to a two-dimensional topological insulator (2D-TI) and a subsequent phase transition to a trivial insulator when varying the thickness of α-Sn. Our work indicates that α-Sn is an excellent model system to study novel topological phases and a prominent material candidate for topological devices.
title: Faroese Quest Of Orange Roughy In The North Atlantic
Creators: name: Thomsen, Bjarti
Publisher: name: ASC 1998 - O
Year: 2024
Subjects: Fisheries and aquaculture
Ecosystem observation, processes and dynamics

description: No abstracts are to be cited without prior reference to the author.Commercial catch data indicate, that although the abundance of orange roughy on a deep-sea bank can be reduced considerably by a few months fishing, large catches can be taken in spawning season in late January to early March.
Utility of Traffic Information in Dynamic Routing: Is Sharing Information Always Useful?
Creators: name: Shaqfeh, Mohammad
name: Hessien, Salah
name: Serpedin, Erchin
Publisher: name: arXiv
Year: 2021
Subjects: subject: Multiagent Systems (cs.MA)
subject: FOS: Computer and information sciences

description: Real-time traffic information can be utilized to enhance the efficiency of transportation networks by dynamically updating routing plans to mitigate traffic jams. However, an interesting question is whether the network coordinator should broadcast real-time traffic information to all network users or communicate it selectively to some of them. Which option enhances the network efficiency more? In this work, we demonstrate using simulation experiments that sharing real-time traffic information with all network users is sub-optimal, and it is actually better to share the information with a majority subset of the total population in order to improve the overall network performance. This result is valid under the assumption that each network user decides its route to destination locally.
description: 6 pages, 6 figures, published in 2020 IEEE 3rd Connected and Automated Vehicles Symposium (CAVS)
Across Europe and the Mediterranean Sea
Creators: name: Rossetto, Piera
name: Spadaro, Barbara
Publisher: name: Università Ca’ Foscari Venezia, Italia
Year: 2014

description:

The article aims at presenting a cross-disciplinary project on the histories and memories of the Jews from Libya: Mapping Living Memories. The Jewish Diaspora from Libya across Europe and the Mediterranean. The project has been designed and carried out by the authors of this article; its main outcome is represented by a collection of interviews with fifty Jews, men and women, who left Libya between the 1940s and the 1960s, moving to Italy, Israel, France and the UK. Our aims are twofold: first, to chart premises and distinctive features of our project, and highlight how the collection contribute to further elaborate the notion of ‘Libyan Jewry’; second, to point out the potential of this project for historical reading by exploring different steams of migration from a postcolonial perspective.

description: Annali di Ca’ Foscari. Serie orientale
Additional file 2 of Hospital utilization rates for influenza and RSV: a novel approach and critical assessment
Creators: name: Johnson, Emily K.
name: Sylte, Dillon
name: Chaves, Sandra S.
name: Li, You
name: Mahe, Cedric
name: Nair, Harish
name: Paget, John
name: van Pomeren, Tayma
name: Shi, Ting
name: Viboud, Cecile
name: James, Spencer L.
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Biotechnology
subject: Mathematical Sciences not elsewhere classified
subject: Cancer
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Virology
subject: Computational Biology

description: Additional file 2. Influenza and RSV ICD Codes. Description of data: The ICD-9 and ICD-10 codes used to identify influenza and RSV admissions from raw ICD extraction, to compare against the utilization rates produced by the BIRD study.
Extended Holomorphic Anomaly and Loop Amplitudes in Open Topological String
Creators: name: Walcher, Johannes
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Algebraic Geometry (math.AG)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: Open topological string amplitudes on compact Calabi-Yau threefolds are shown to satisfy an extension of the holomorphic anomaly equation of Bershadsky, Cecotti, Ooguri and Vafa. The total topological charge of the D-brane configuration must vanish in order to satisfy tadpole cancellation. The boundary state of such D-branes is holomorphically captured by a Hodge theoretic normal function. Its Griffiths' infinitesimal invariant is the analogue of the closed string Yukawa coupling and plays the role of the terminator in a Feynman diagram expansion for the topological string with D-branes. The holomorphic anomaly equation is solved and the holomorphic ambiguity is fixed for some representative worldsheets of low genus and with few boundaries on the real quintic.
description: 56 pages, 6+ figures, v2,v3: refs added, v4: numerical predictions retracted
Radar-based Automotive Localization using Landmarks in a Multimodal Sensor Graph-based Approach
Creators: name: Jürgens, Stefan
name: Koch, Niklas
name: Meinecke, Marc-Michael
Publisher: name: arXiv
Year: 2021
Subjects: subject: Robotics (cs.RO)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Highly automated driving functions currently often rely on a-priori knowledge from maps for planning and prediction in complex scenarios like cities. This makes map-relative localization an essential skill. In this paper, we address the problem of localization with automotive-grade radars, using a real-time graph-based SLAM approach. The system uses landmarks and odometry information as an abstraction layer. This way, besides radars, all kind of different sensor modalities including cameras and lidars can contribute. A single, semantic landmark map is used and maintained for all sensors. We implemented our approach using C++ and thoroughly tested it on data obtained with our test vehicles, comprising cars and trucks. Test scenarios include inner cities and industrial areas like container terminals. The experiments presented in this paper suggest that the approach is able to provide a precise and stable pose in structured environments, using radar data alone. The fusion of additional sensor information from cameras or lidars further boost performance, providing reliable semantic information needed for automated mapping.
Evaluation of urban transportation investments using social benefit cost analysis : a case study of the Geist Road extension in Fairbanks, Alaska
Creators: name: Schwetz, Thomas Bernard
Publisher: name: University of British Columbia
Year: 2010

description: This paper illustrates the use of Social Benefit-Cost Analysis (SBCA) to evaluate a major highway improvement project proposed for Fairbanks, Alaska. Use of SBCA has been shown to lead to the selection of projects which provide greater net benefits to society than other evaluation methods. Despite this, the majority of resources spent on highway investment in the U.S. each year is programmed based on simple, non-economic investment rules. The case study employs a detailed analysis of Fairbank's highway transportation system in order to develop estimates of direct user costs over the life of the proposed project. This level of detail provides reliable user costs, sensitive to relationships between costs and traffic volumes, land use patterns, distribution of traffic by time of day, vehicle mix, etc. It is concluded that the method used in the case study is applicable to and appropriate for use in other medium-sized and small urban areas. The data required for this analysis was found to be available from models routinely generated by most cities. Analyses of this type could be improved with better data on vehicle operating costs, the valuation of travel time and the relationship between accidents and traffic volumes. The relationship between the technical analysis using SBCA and the broader decision-making framework is discussed. It is concluded that analysts can play a role in ensuring the effective use of the analysis results in the often politicized decision-making framework. It is felt that this is best accomplished by ensuring the active participation of the analyst, the decision-maker and the community in the development of alternatives and the setting of objectives to be used in the analysis.
Constraints on Theoretical Predictions Beyond the Standard Model from the Casimir Effect and Some Other Tabletop Physics
Creators: name: Klimchitskaya, G. L.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We review the hypothetical interactions predicted beyond the Standard Model which could be constrained by using the results of tabletop laboratory experiments. These interactions are described by the power-type potentials with different powers, Yukawa potential, other spin-independent potentials, and by the spin-dependent potentials of different kinds. In all these cases the current constraints on respective hypothetical interactions are considered which follow from the Casimir effect and some other tabletop physics. The exotic particles and constraints on them are discussed in the context of problems of the quantum vacuum, dark energy, and the cosmological constant.
description: 23 pages, 4 figures
Theory of the nodal nematic quantum phase transition in superconductors
Creators: name: Kim, Eun-Ah
name: Lawler, Michael J.
name: Oreto, Paul
name: Sachdev, Subir
name: Fradkin, Eduardo
name: Kivelson, Steven A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We study the character of an Ising nematic quantum phase transition (QPT) deep inside a d-wave superconducting state with nodal quasiparticles in a two-dimensional tetragonal crystal. We find that, within a 1/N expansion, the transition is continuous. To leading order in 1/N, quantum fluctuations enhance the dispersion anisotropy of the nodal excitations, and cause strong scattering which critically broadens the quasiparticle (qp) peaks in the spectral function, except in a narrow wedge in momentum space near the Fermi surface where the qp's remain sharp. We also consider the possible existence of a nematic glass phase in the presence of weak disorder. Some possible implications for cuprate physics are also discussed.
description: 9 page, 4 figures, an error in one of expressions corrected and a new author was added. New references and footnotes are added and this is the version to appear in PRB
Can quantum fluctuations differentiate between standard and unimodular gravity?
Creators: name: de Brito, Gustavo P.
name: Melichev, Oleg
name: Percacci, Roberto
name: Pereira, Antonio D.
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: We formally prove the existence of a quantization procedure that makes the path integral of a general diffeomorphism-invariant theory of gravity, with fixed total spacetime volume, equivalent to that of its unimodular version. This is achieved by means of a partial gauge fixing of diffeomorphisms together with a careful definition of the unimodular measure. The statement holds also in the presence of matter. As an explicit example, we consider scalar-tensor theories and compute the corresponding logarithmic divergences in both settings. In spite of significant differences in the coupling of the scalar field to gravity, the results are equivalent for all couplings, including non-minimal ones.
description: 14 pages + appendices and references
title: Age, Maturity And Other Biological Parameters Of Two Morid Species Lepidion Eques (Gunther, 1887) And Antimora Rostrata Gunther, 1878, In Icelandic Waters
Creators: name: Magnusson, Jutta V.
Publisher: name: ASC 1998 - O
Year: 2024
Subjects: Fisheries and aquaculture
Ecosystem observation, processes and dynamics

description: No abstracts are to be cited without prior reference to the author.This paper presents biological parameters on two species of the morid family, Lepidion eques and Antimora rostrata collected in Icelandic waters by the Marine Research Institute, Iceland. Although both species are common in the waters off the south and west coasts of Iceland their habitat differs in depth and temperature. Lepidion eques is mostly observed in depths 500 - 900 m in temperatures between 5° and 6° C, while Antimora rostrata is mainly recorded in depths below 1300 m in temperatures of around 4°C. The mean length of Lepidion eques increased with increasing depth. Males and females are very similar in size. Observations on ripening and newly spent fish lead to the assumption that the main spawning season in Icelandic waters, is well under way in February and seems to be over in May-June. The 50% maturity point was reached at a length of 30,8 cm for males and at 29,5 cm for females. An age-length key is given Females of Antimora rostrata were much larger in size than males. Larger fish especially females were more numerous in depths> 1500 m. Small fish were observed in shallower depths than adults. Spawning fish was not observed but observations on other maturity stages indicate that in Icelandic waters, spawning takes place in winter. The 50% maturity was reached at a length of 40-43 cm. Presumably, Antimora rostrata is a slow growing species. The age range was given from 3 years (15 cm) to 23 years (54 cm). Males are much smaller than females at a given age.
The inner jet of radio galaxy NGC 315 as observed with Chandra and the VLA
Creators: name: Worrall, D. M.
name: Birkinshaw, M.
name: Laing, R. A.
name: Cotton, W. D.
name: Bridle, A. H.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present Chandra X-ray results for the jet, nucleus, and gaseous atmosphere of NGC 315, a nearby radio galaxy whose jet kinematics are known through deep radio mapping. Diffuse X-ray synchrotron emission is detected from the jet out to 30 arcsec from the nucleus, through regions both of fast bulk flow and deceleration. The X-ray to radio flux ratio drops considerably where the flow decelerates, but the X-ray and radio emissions show similar transverse extents throughout, requiring distributed particle acceleration to maintain the supply of X-ray-emitting electrons. A remarkable knotty filament within the jet is seen in both the radio and X-ray, contributing roughly 10 per cent of the diffuse emission along its extent at both wavelengths. No completely satisfactory explanation for the filament is found, though its oscillatory appearance, roughly aligned magnetic field, and requirements for particle acceleration, suggest that it is a magnetic strand within a shear layer between fast inner and slower outer flow.
description: Accepted for publication in the MNRAS. 13 pages,14 figures (some in colour)
title: Anatomia Clavis ed Clavus Medicinae
Creators: name: Trucas, Marcello
name: Quartu, Marina
name: Riva, Alessandro
Publisher: name: UNICApress
Year: 2020

description: Ricorrendo nel 2020 il 400° anno dal privilegio regio di fondazione dell’Università degli Studi di Cagliari, gli Autori hanno la duplice ambizione di dare un contributo scientifico-culturale alle celebrazioni dell’Ateneo e di valorizzare il ruolo dell’Anatomia e del suo insegnamento nella società e nelle vicende medico-sanitarie che hanno accompagnato l’evoluzione della sanità e della cultura medica a Cagliari e in Sardegna. Questo libro illustrato è composto da sette Capitoli. I primi tre, che vanno dalla protostoria ai giorni nostri, affrontano la maggior parte dei momenti storici dell'evoluzione della conoscenza e dell'insegnamento di Anatomia Umana e delle Scienze affini prodotti soprattutto nella città di Cagliari, nella sua Università e nelle sue Istituzioni Anatomiche ospedaliere.

Il Capitolo 4 è interamente dedicato ai Teatri Anatomici e alle Sale Anatomiche della città di Cagliari, luoghi prima poco conosciuti o totalmente sconosciuti: un percorso che si estende da Palazzo Belgrano, sede del Rettorato, all'Istituto Anatomico di via Porcell. Quest'ultimo, aperto nel 1922-23, è stato l'istituzione anatomica più importante di Cagliari fino al 1998.

Il Capitolo 5 delinea l'evoluzione storica dei metodi utilizzati per gli studi anatomici, dalla dissezione alla microscopia, tracciando nel contempo i legami dell’Anatomia con varie discipline filosofiche e scientifiche.

Il Capitolo 6 riassume la cronologia generale e offre una visione prosopografica della vita, del pensiero e del contesto storico-sociale delle Persone che si sono alternate nell'insegnamento di Anatomia. Oltre ai Professori, sono stati attentamente considerati anche i Settori e gli Assistenti, alcuni dei quali rinomati protagonisti del mondo scientifico internazionale.

Nel Capitolo 7, infine, si dedica ampio spazio ai mutamenti più recenti che evidenziano l'evoluzione dei metodi di indagine applicati tramite la microscopia ottica e la microscopia elettronica a trasmissione e a scansione; essi comprendono l’immunochimica, la morfometria, le colture cellulari, in un contesto accademico in continua trasformazione. Gli sviluppi degli ultimi 55 anni ci hanno permesso di scrivere pagine di storia più vicine ai nostri tempi e ricche di ricordi di luoghi, fatti e persone. Essi riguardano l'Istituto divenuto poi Dipartimento, il Corso di Dottorato, gli spazi museali in cui primeggia, per rilevanza mondiale e indiscussa bellezza delle opere, il Museo delle Cere Anatomiche. Infine uno spazio è dedicato ai Laboratori di Ricerca dell'attuale Sezione di Citomorfologia del Dipartimento di Scienze Biomediche e al loro contributo al progresso della ricerca scientifica in campo morfologico e funzionale.
Quantitative Interpretations of Energetic Features and Key Residues at SARS Coronavirus Spike Receptor-Binding Domain and ACE2 Receptor Interface
Creators: name: Yang, Yanmei
name: Zhang, Yunju
name: Qu, Yuanyuan
name: Liu, Xuewei
name: Zhao, Mingwen
name: Mu, Yuguang
name: Li, Weifeng
Publisher: name: arXiv
Year: 2021
Subjects: subject: Biomolecules (q-bio.BM)
subject: FOS: Biological sciences
subject: 92C05, 92C45, 92C50

description: The wide spread of coronavirus disease 2019 (COVID-19) has declared a global health emergency. As one of the most important targets for antibody and drug developments, Spike RBD-ACE2 interface has received extensive attention. Here, using molecular dynamics simulations, we explicitly evaluated the binding energetic features of the RBD-ACE2 complex of both SARS-CoV and SARS-CoV-2 to find the key residues. Although the overall ACE2-binding mode of the SARS-CoV-2 RBD is nearly identical to that of the SARS-CoV RBD, the difference in binding affinity is as large as -16.35 kcal/mol. Energy decomposition analyses identified three binding patches in the SARS-CoV-2 RBD and eleven key residues (Phe486, Tyr505, Asn501, Tyr489, Gln493, Leu455 and etc) which are believed to be the main targets for drug development. The dominating forces are from van der Waals attractions and dehydration of these residues. It is also worth mention that we found seven mutational sites (Lys417, Leu455, Ala475, Gly476, Glu484, Gln498 and Val503) on SARS-CoV-2 which unexpectedly weakened the RBD-ACE2 binding. Very interestingly, the most repulsive residue at the RBD-ACE2 interface (E484), is found to be mutated in the latest UK variant, B1.1.7, cause complete virus neutralization escapes from highly neutralizing COVID-19 convalescent plasma. Our present results indicate that at least from the energetic point of view such E484 mutation may have beneficial effects on ACE2 binding. The present study provides a systematical understanding, from the energetic point of view, of the binding features of SARS-CoV-2 RBD with ACE2 acceptor. We hope that the present findings of three binding patches, key attracting residues and unexpected mutational sites can provide insights to the design of SARS-CoV-2 drugs and identification of cross-active antibodies.
description: 12 pages, 4 figures, 1 table
Taking the Measure of the Universe: Precision Astrometry with SIM PlanetQuest
Creators: name: Unwin, Stephen C.
name: Shao, Michael
name: Tanner, Angelle M.
name: Allen, Ronald J.
name: Beichman, Charles A.
name: Boboltz, David
name: Catanzarite, Joseph H.
name: Chaboyer, Brian C.
name: Ciardi, David R.
name: Edberg, Stephen J.
name: Fey, Alan L.
name: Fischer, Debra A.
name: Gelino, Christopher R.
name: Gould, Andrew P.
name: Grillmair, Carl
name: Henry, Todd J.
name: Johnston, Kathryn V.
name: Johnston, Kenneth J.
name: Jones, Dayton L.
name: Kulkarni, Shrinivas R.
name: Law, Nicholas M.
name: Majewski, Steven R.
name: Makarov, Valeri V.
name: Marcy, Geoffrey W.
name: Meier, David L.
name: Olling, Rob P.
name: Pan, Xiaopei
name: Patterson, Richard J.
name: Pitesky, Jo Eliza
name: Quirrenbach, Andreas
name: Shaklan, Stuart B.
name: Shaya, Edward J.
name: Strigari, Louis E.
name: Tomsick, John A.
name: Wehrle, Ann E.
name: Worthey, Guy
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Precision astrometry at microarcsecond accuracy has application to a wide range of astrophysical problems. This paper is a study of the science questions that can be addressed using an instrument that delivers parallaxes at about 4 microarcsec on targets as faint as V = 20, differential accuracy of 0.6 microarcsec on bright targets, and with flexible scheduling. The science topics are drawn primarily from the Team Key Projects, selected in 2000, for the Space Interferometry Mission PlanetQuest (SIM PlanetQuest). We use the capabilities of this mission to illustrate the importance of the next level of astrometric precision in modern astrophysics. SIM PlanetQuest is currently in the detailed design phase, having completed all of the enabling technologies needed for the flight instrument in 2005. It will be the first space-based long baseline Michelson interferometer designed for precision astrometry. SIM will contribute strongly to many astronomical fields including stellar and galactic astrophysics, planetary systems around nearby stars, and the study of quasar and AGN nuclei. SIM will search for planets with masses as small as an Earth orbiting in the `habitable zone' around the nearest stars using differential astrometry, and could discover many dozen if Earth-like planets are common. It will be the most capable instrument for detecting planets around young stars, thereby providing insights into how planetary systems are born and how they evolve with time. SIM will observe significant numbers of very high- and low-mass stars, providing stellar masses to 1%, the accuracy needed to challenge physical models. Using precision proper motion measurements, SIM will probe the galactic mass distribution and the formation and evolution of the Galactic halo. (abridged)
description: 54 pages, 28 figures, uses emulateapj. Submitted to PASP
An analytical study of Industrial Expectation from Management Student and the role of Management
Creators: name: Shahare, Padmakar
name: Burghate, Mukul
Publisher: name: figshare
Year: 2021
Subjects: subject: 150301 Business Information Management (incl. Records, Knowledge and Information Management, and Intelligence)
subject: FOS: Economics and business
subject: 150304 Entrepreneurship
subject: 150313 Quality Management

description: The ‘gap’ which is identified when then placement activities is done in one of the Management institute of RTM Nagpur University, Nagpur, which indicates the young graduatesrequired skills that to be acquired during their learning and development period from educationalinstitutions, which support them to survive in industry as best performers with absolutecontributions.
Nafion-induced reduction of manganese and its impact on the electrocatalytic properties of a highly active MnFeNi oxide for bifunctional oxygen conversion
Creators: name: Morales, Dulce M.
name: Villalobos, Javier
name: Kazakova, Mariya A.
name: Xiao, Jie
name: Risch, Marcel
Publisher: name: arXiv
Year: 2021
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: Electrocatalysts for bifunctional oxygen reduction (ORR) and oxygen evolution reaction (OER) are commonly studied under hydrodynamic conditions, rendering the use of binders necessary to ensure the mechanical stability of the electrode films. The presence of a binder, however, may influence the properties of the materials under examination to an unknown extent. Herein, we investigate the impact of Nafion on a highly active ORR/OER catalyst consisting of MnFeNi oxide nanoparticles supported on multi-walled carbon nanotubes. Electrochemical studies revealed that, in addition to enhancing the mechanical stability and particle connectivity, Nafion poses a major impact on the ORR selectivity, which correlates with a decrease in the valence state of Mn according to X-ray absorption spectroscopy. These findings call for awareness regarding the use of electrode additives, since in some cases the extent of their impact on the properties of electrode films cannot be regarded as negligible.
description: Preprint version
Properties of a Gamma Ray Burst Host Galaxy at z ~ 5
Creators: name: Price, P. A.
name: Songaila, A.
name: Cowie, L. L.
name: Burnell, J. Bell
name: Berger, E.
name: Cucchiara, A.
name: Fox, D. B.
name: Hook, I.
name: Kulkarni, S. R.
name: Penprase, B.
name: Roth, K. C.
name: Schmidt, B.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We describe the properties of the host galaxy of the gamma-ray burst GRB060510B based on a spectrum of the burst afterglow obtained with the Gemini North 8m telescope. The galaxy lies at a redshift of z = 4.941 making it the fourth highest spectroscopically identified burst host. However, it is the second highest redshift galaxy for which the quality of the spectrum permits a detailed metallicity analysis. The neutral hydrogen column density has a logarithmic value of 21.0--21.2 cm^-2 and the weak metal lines of Ni, S and Fe show that the metallicity is in excess of a tenth of solar which is far above the metallicities in damped Lyman alpha absorbers at high redshift. The tightest constraint is from the Fe lines which place [Fe/H] in excess of -0.8. We argue that the results suggest that metallicity bias could be a serious problem with inferring star formation from the GRB population and consider how future higher quality measurements could be used to resolve this question.
description: Accepted for publication in ApJ Letters
KL-randomness and effective dimension under strong reducibility
Creators: name: Kjos-Hanssen, Bjørn
name: Webb, David J.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Logic (math.LO)
subject: FOS: Mathematics
subject: 03D32 (Primary), 03D28

description: We show that the (truth-table) Medvedev degree KLR of Kolmogorov--Loveland randomness coincides with that of Martin Löf randomness, MLR, answering a question of Miyabe. Next, an analogue of complex packing dimension is studied which gives rise to a set of weak truth-table Medvedev degrees isomorphic to the Turing degrees.
Evolution of geometric structures in intense turbulence
Creators: name: Xu, Haitao
name: Ouellette, Nicholas T.
name: Bodenschatz, Eberhard
Publisher: name: arXiv
Year: 2007
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: We report measurements of the evolution of lines, planes, and volumes in an intensely turbulent laboratory flow using high-speed particle tracking. We find that the classical characteristic time scale of an eddy at the initial scale of the object considered is the natural time scale for the subsequent evolution. The initial separation may only be neglected if this time scale is much smaller than the largest turbulence time scale, implying extremely high turbulence levels.
description: 10 pages, 6 figures, added more details
Resource Letter: Dark Energy and the Accelerating Universe
Creators: name: Linder, Eric V.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: This Resource Letter provides a guide to the literature on dark energy and the accelerating universe. It is intended to be of use to researchers, teachers, and students at several levels. Journal articles, books, and websites are cited for the following topics: Einstein's cosmological constant, quintessence or dynamical scalar fields, modified cosmic gravity, relations to high energy physics, cosmological probes and observations, terrestrial probes, calculational tools and parameter estimation, teaching strategies and educational resources, and the fate of the universe.
description: Resource Letter for AAPT/AJP, 11 pages, 99 references