cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The effect of a strong pressure bump in the Sun's natal disk: Terrestrial planet formation via planetesimal accretion rather than pebble accretion
Creators: name: Izidoro, André
name: Bitsch, Bertram
name: Dasgupta, Rajdeep
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Mass-independent isotopic anomalies of carbonaceous and non-carbonaceous meteorites show a clear dichotomy suggesting an efficient separation of the inner and outer solar system. Observations show that ring-like structures in the distribution of mm-sized pebbles in protoplanetary disks are common. These structures are often associated with drifting pebbles being trapped by local pressure maxima in the gas disk. Similar structures may also have existed in the sun's natal disk, which could naturally explain the meteorite/planetary isotopic dichotomy. Here, we test the effects of a strong pressure bump in the outer disk (e.g. $\sim$5~au) on the formation of the inner solar system. We model dust coagulation and evolution, planetesimal formation, as well as embryo's growth via planetesimal and pebble accretion. Our results show that terrestrial embryos formed via planetesimal accretion rather than pebble accretion. In our model, the radial drift of pebbles foster planetesimal formation. However, once a pressure bump forms, pebbles in the inner disk are lost via drift before they can be efficiently accreted by embryos growing at $\gtrapprox$1~au. Embryos inside $\sim$0.5-1.0au grow relatively faster and can accrete pebbles more efficiently. However, these same embryos grow to larger masses so they should migrate inwards substantially, which is inconsistent with the current solar system. Therefore, terrestrial planets most likely accreted from giant impacts of Moon to roughly Mars-mass planetary embryos formed around $\gtrapprox$1.0~au. Finally, our simulations produce a steep radial mass distribution of planetesimals in the terrestrial region which is qualitatively aligned with formation models suggesting that the asteroid belt was born low-mass.
description: Accepted in ApJ
Beam squint and Stokes V with off-axis feeds
Creators: name: Uson, Juan M.
name: Cotton, W. D.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Radio telescopes with off-axis feeds, such as the (E)VLA, suffer from "beam squint" in which the two orthogonal circular polarizations sampled have different pointing centers on the sky. Its effects are weak near the beam center but become increasingly important towards the edge of the antenna power pattern where gains in the two polarizations at a given sky position are significantly different. This effect has limited VLA measurements of circular polarization (Stokes V) and introduced dynamic range limiting, wide-field artifacts in images made in Stokes I. We present an adaptation of the visibility-based deconvolution CLEAN method that can correct this defect "on the fly" while imaging, correcting as well the associated self-calibration. We present two examples of this technique using the procedure "Squint" within the Obit package which allows wide-field imaging in Stokes V and reduced artifacts in Stokes I. We discuss the residual errors in these examples as well as a scheme for future correction of some of these errors. This technique can be generalized to implement temporally- and spatially-variable corrections, such as pointing and cross-polarization leakage errors.
description: 9 pages, 6 figures (five of them double), to appear in Astronomy & Astrophysics (accepted: May 9, 2008). High-resolution versions of the figures (gzipped, tar,gzipped) can be downloaded from http://www.cv.nrao.edu/~juson/technical/squint/squint_figures.gz
Multiplicity free expansions of Schur $P$-functions
Creators: name: Shaw, Kristin M.
name: van Willigenburg, Stephanie
Publisher: name: arXiv
Year: 2007
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: Primary 05E05, 05A17; Secondary 05A19, 05E10

description: After deriving inequalities on coefficients arising in the expansion of a Schur $P$-function in terms of Schur functions we give criteria for when such expansions are multiplicity free. From here we study the multiplicity of an irreducible spin character of the twisted symmetric group in the product of a basic spin character with an irreducible character of the symmetric group, and determine when it is multiplicity free.
description: 10 pages
L'amebeo lirico-epirrematico nell' Andromaca di Euripide: struttura, metro e funzione drammatica
Creators: name: Cerbo, Ester
Publisher: name: Annali Online  Lettere - Ferrara
Year: 2012

description: Euripides' Andromache has been considered a 'second rank' drama  since ancient times. However it presents interesting innovations in the  structure, in the staging and in the lyrical score. These innovations  point out an avant-garde character of the play. Thus, the three  lyrical-epirrhematic amoebaeons, from which the three scenic phases  originate, are particularly interesting as they are correlated and each  of them is based on the three protagonists of the tragic action  (Andromache, Hermione and Peleus). 	The analysis of the structure, of the metrics and of the dramatic  function of the three amoebaeons is proposed in order to highlight the  different innovations used by Euripides in this specific section of the  tragedy which transformed Andromache into a laboratory of  theatrical experimentation. 	As everybody knows, the lyrical-epirrhematic amoebaeon represents a  typology of dialogue, in which singing and recitative alternate  according to various modalities, and therefore it represents a valid  instrument expressing the various states of mind of the characters  involved (actor/s - chorus/choryphaeus); the dramatic poet makes use of  it to emphasize a situation of conflict or to give the scene more  intense emotional effects, based on pathetikòn tò anomalés.  	In Andromache each amoebaeon is distinguished by a specific  structure of composition and by particular metrical forms which  contribute to define the various characters and their emotional  condition. The structural and metric-rhythmic innovations are well  harmonized with the dramatic needs of the scenic action. They highlight  Euripides' continuous search in the field of the theatrical technique  and his tendency to transform drama into melodrama, thanks to the  importance given to the singing of the actor in highly pathetic scenes.
description: Annali Online  Lettere - Ferrara, III 2 (2008)
HEART CONDITIONS IN THE CORONARY HEART
Creators: name: Djuraeva, Barno
name: Gaybullayev, Sirojiddin
name: Kuvondikova, Kamola
Publisher: name: Zenodo
Year: 2023

description: This comprehensive essay delves into the intricate landscape of Coronary Heart Disease (CHD), a global health challenge impacting millions worldwide. It explores CHD's definition, risk factors, symptoms, diagnostic approaches, treatment strategies, preventative measures, global impact, and public health initiatives. The essay emphasizes the interplay of modifiable and non-modifiable risk factors, the diverse clinical manifestations of CHD, and the importance of early detection and intervention. Additionally, it underscores the collective imperative of global efforts, including public health initiatives, to address the burden of CHD on a larger scale.
Cucusquama wesafrica O'Loughlin. Systematic 2016, sp. nov.
Creators: name: O'Loughlin, P. Mark
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Animalia
Echinodermata
Holothuroidea
Dendrochirotida
Cucumariidae
Cucusquama
Cucusquama wesafrica

description: Cucusquama wesafrica O’Loughlin sp. nov.
Zoobank LSID. http://zoobank.org/ urn:lsid:zoobank.org:act: D4A442DB-36E7-453C-945D-47FA23AB6CAA
Table 1; figures 5, 6
Material examined. Holotype. West Africa, Luanda, Angola, Discovery stn D 274, -8.84 13.23 64–65 m, 4 Aug 1927, NHMUK 2016.148.
Paratypes (4). West Africa, off Cape Lopez, Gambon (French Congo), Discovery stn D 279, -0.63 8.70 58–67 m, 10 Aug 1927, NHMUK 2016.149 – 152.
Description. Body (preserved) up to 13 mm axial length, up to 3 mm high, body form sub-pentagonal, body tapered anteriorly and posteriorly, long posterior taper to create a tail; body completely invested in imbricating scales, free ends of imbricating scales point posteriorly; oral disc at base of oral cavity created by anteriorly-projecting scales; no anal scales detected; 10 short, lobed, black tentacles in ring on oral disc; ring not strongly calcified, form weakly evident, cucumariid-like; internal organs shriveled, brittle; tube feet on radii only, in single spaced series, up to 12 tube feet on any radius, tube feet more strongly developed on mid-ventral and ventro-lateral radii, wall of tube feet covered with imbricating scales.
Body wall ossicles single-layered perforated plates only, irregularly oval; large plates scales up to 600 µ m long; some irregular smaller plates up to about 170 µ m long; no evidence of cups or tables detected. No tube foot endplates detected. No tentacle ossicles detected.
Distribution. Equatorial West Africa, off Angola and Gambon, 58– 67 m.
1 See note 1 with Table 2 below.
2 See note 2 with Table 2 below.
3 Holotype specimen is thought to be lost. See note 3 with Table 2 below.
4 Specimen and locality source not recognized. May not be Discovery Expedition. Handwritten label with: St. 105, 13/2/’31, 163 m.
Etymology. Named wesafrica for the geographical occurrence of the species on the West Africa coast.
Remarks. All the type specimens have dried during preservation, and the calcareous ring and ossicles are partly at least eroded. The ring does not have a recognizable outline in any specimen that was dissected. The form and number of the tentacles are difficult to observe. The sub-pentagonal form, complete body cover of imbricating scales with free ends pointing posteriorly, 10 short lobed tentacles, radial series of tube feet, and absence of cups or tables distinguish the new genus and species.
description: Published as part of O'Loughlin, P. Mark, 2016, The Discovery Expedition sea cucumbers (Echinodermata: Holothuroidea), pp. 53-70 in Memoirs of Museum Victoria 75 on pages 58-64, DOI: 10.24199/j.mmv.2016.75.03, http://zenodo.org/record/10886820
Lacus amoenus/horridus. Messinscena di storie ed immaginari intorno al Lago dei cigni
Creators: name: Mei, Silvia
Publisher: name: Annali Online  Lettere - Ferrara
Year: 2012

description: Born under Symbolism influence until Art Nouverau style, the Swan Lake ballet moves towards a soil tilled by dubious figures of Romantic  derivation. The swan, the swans, become masks of a fear, of a  contradiction of being that man always exorcises stressing a very  masculin disfunction between two sexes.
description: Annali Online  Lettere - Ferrara, III 2 (2008)
Mass-radius relationships for irradiated ocean planets
Creators: name: Aguichine, Artyom
name: Mousis, Olivier
name: Deleuil, Magali
name: Marcq, Emmanuel
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Massive and water-rich planets should be ubiquitous in the universe. Many of those worlds are expected to be subject to important irradiation from their host star, and display supercritical water layers surrounded by extended steam atmospheres. Irradiated ocean planets with such inflated hydrospheres have been recently shown to be good candidates for matching the mass-radius distribution of sub-Neptunes. Here we describe a model that computes a realistic structure for water-rich planets by combining an interior model with an updated equation of state (EoS) for water, and an atmospheric model that takes into account radiative transfer. We find that the use of non appropriate EoSs can lead to the overestimation of the planetary radius by up to $\sim$10\%, depending on the planet size and composition. Our model has been applied to the GJ 9827 system as a test case and indicates Earth- or Venus-like interiors for planets b and c, respectively. Planet d could be an irradiated ocean planet with a water mass fraction of $\sim$$20\pm10\%$. We also provide fits for the mass-radius relationships, allowing one to directly retrieve a wide range of planetary compositions, without the requirement to run the model. Our calculations finally suggest that highly irradiated planets lost their H/He content through atmospheric loss processes, and that the leftover material led to either super-Earths or sub-Neptunes, depending on the water mass fraction.
description: Accepted for publication in ApJ
การตรวจจับผู้ดื่มเครื่องดื่มแอลกอฮอล์จากภาพถ่ายโดยเทคนิคการรู้จำสีแก้มและความกว้างขนาดดวงตา
Creators: name: พิศาล บุญมาวาสนาส่ง
name: สุนันฑา สดสี
Publisher: name: กองบริหารการวิจัย
Year: 2562
Subjects: ภาพถ่ายผู้ดื่มเครื่องดื่มแอลกอฮอล์
การตรวจจับภาพใบหน้า
การรู้จำสีแก้ม
การตรวจจับความกว้างของขนาดดวงตา
neural network แบบแพร่กระจายย้อนกลับ

description: วารสารวิทยาศาสตร์และเทคโนโลยี, 27, 3, 539-549
Infinite slabs and other weird plane symmetric space-times with constant positive density
Creators: name: Saravi, Ricardo E. Gamboa
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We present the exact solution of Einstein's equation corresponding to a static and plane symmetric distribution of matter with constant positive density located below $z=0$. This solution depends essentially on two constants: the density $ρ$ and a parameter $κ$. We show that this space-time finishes down below at an inner singularity at finite depth. We match this solution to the vacuum one and compute the external gravitational field in terms of slab's parameters. Depending on the value of $κ$, these slabs can be attractive, repulsive or neutral. In the first case, the space-time also finishes up above at another singularity. In the other cases, they turn out to be semi-infinite and asymptotically flat when $z\to\infty$. We also find solutions consisting of joining an attractive slab and a repulsive one, and two neutral ones. We also discuss how to assemble a "gravitational capacitor" by inserting a slice of vacuum between two such slabs.
description: 8 pages
ปัจจัยที่ส่งผลต่อการผลิตก๊าซไบโอไฮโดรเจนจากซังข้าวโพดด้วยกระบวนการหมักแบบไม่ใช้แสง
Creators: name: ณหทัย มหาเทพ
name: บัณฑิตา เพ็ญศรี
name: พฤกษ์ อักกะรังสี
Publisher: name: กองบริหารการวิจัย
Year: 2562
Subjects: ซังข้าวโพด
ไบโอไฮโดรเจน
กระบวนการหมักแบบไม่ใช้แสง
ความเข้มข้นสารตั้งต้น
ค่าความเป็นกรดด่าง
ระยะเวลาในการหมัก

description: วารสารวิทยาศาสตร์และเทคโนโลยี, 27, 3, 550-565
Leo De Berardinis artista-teorico
Creators: name: De Marinis, Marco
Publisher: name: Annali Online  Lettere - Ferrara
Year: 2012

description: Leo de Berardinis was an allround man of the theatre: an  extraordinary actor, director, dramaturge, and pedagogue. Among the  many aspects of his theatrical work, it is his theory which, to this  day, has not been adequately highlighted. And yet his writings and  interventions demonstrate how he was a true artist-theorist and follow  in an unbroken line from those of the director-pedagogues of the 20th  century in terms of their intellectual significance, ethical  intensity, and civic commitment.
description: Annali Online  Lettere - Ferrara, III 2 (2008)
Raffaella Bombi, La Linguistica del contatto - Tipologie di anglicismi nell'italiano contemporaneo e riflessi metalinguistici. Roma. Il Calamo. 2005. pp. 380. ISBN 8889837039
Creators: name: Chapman, Richard
Publisher: name: Annali Online  Lettere - Ferrara
Year: 2012

description: Annali Online  Lettere - Ferrara, IV 1 (2009)
Poesia e biografia: Archiloco, la colonizzazione e la storia
Creators: name: Aloni, Antonio
Publisher: name: Annali Online  Lettere - Ferrara
Year: 2012

description: In what sense Archilochean texts can be thought historically reliable?  To answer this question, first we have to consider the function of each  poem and consequently its possible - or required - assent to historical  landscape and factious spirit. If we make a review of Archilochean  fragments, we recognize at least three different performance arenas: the  symposion (for elegy and iambus: aggressive first person); civic or  religious occasions (for cultual songs and dithyrambos: choral first  person); public performances - more public than symposion - celebrating  collective memory (for narrative poems: storyteller first person). The  tetrametric fragments, in particular, seem to have a strong narrative  and patriotic inspiration and could have been employed in different  performances, public or privat: the two Parian inscriptions of  Archilochus (of Mnesiepes and Sosthenes), in fact, use above all this  kind of poems to reconstruct the archaic Parian (and Archilochean)  history. Each performance - that is each occasion in which Archilochus  performed a poem - legitimates different  poetic attitude: more respectful of Parian history and tradition in case  of public occasion, more available to distortion in presence of a  agreeable audience. All these parameters affect the historical  significance of each Archilochean fragment, that must be individually  judged.
description: Annali Online  Lettere - Ferrara, IV 1 (2009)
TeliNet: Classifying CT scan images for COVID-19 diagnosis
Creators: name: Teli, Mohammad Nayeem
Publisher: name: arXiv
Year: 2021
Subjects: subject: Image and Video Processing (eess.IV)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: COVID-19 has led to hundreds of millions of cases and millions of deaths worldwide since its onset. The fight against this pandemic is on-going on multiple fronts. While vaccinations are picking up speed, there are still billions of unvaccinated people. In this fight against the virus, diagnosis of the disease and isolation of the patients to prevent any spread play a huge role. Machine Learning approaches have assisted in the diagnosis of COVID-19 cases by analyzing chest X-rays and CT-scan images of patients. To push algorithm development and research in this direction of radiological diagnosis, a challenge to classify CT-scan series was organized in conjunction with ICCV, 2021. In this research we present a simple and shallow Convolutional Neural Network based approach, TeliNet, to classify these CT-scan images of COVID-19 patients presented as part of this competition. Our results outperform the F1 `macro' score of the competition benchmark and VGGNet approaches. Our proposed solution is also more lightweight in comparison to the other methods.
description: 7 pages, 4 figures, ICCVW
Compact symmetric solutions to the postage stamp problem
Creators: name: Thomas, Hugh
name: van Willigenburg, Stephanie
Publisher: name: arXiv
Year: 2007
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11B13, 11B83, 11P99 (Primary)

description: We derive lower and upper bounds on possible growth rates of certain sets of positive integers $A_k=\{1= a_1 < a_2 < ... < a_{k}\}$ such that all integers $n\in \{0, 1, 2, ..., ka_{k}\}$ can be represented as a sum of no more than $k$ elements of $A_k$, with repetition.
description: 6 pages, final version to appear in FJMS
Extremality of translation-invariant Gibbs measures for the Potts-SOS model on the Cayley tree
Creators: name: Rahmatullaev, M. M.
name: Rasulova, M. A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mathematical Physics (math-ph)
subject: Probability (math.PR)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: In this paper, we consider the Potts-SOS model where the spin takes values in the set $\{0, 1, 2\}$ on the Cayley tree of order two. We describe all the translation-invariant splitting Gibbs measures for this model in some conditions. Moreover, we investigate whether these Gibbs measures are extremal or non-extremal in the set of all Gibbs measures.
LTER marine data and Open Science: the experience of the "Ecological Northern Adriatic Open Science Observation System (EcoNAOS)"
Creators: name: Minelli, Annalisa
name: Bastianini, Mauro
name: Bergami, Caterina
name: Bernardi Aubry, Fabrizio
name: Camatti, Elisa
name: Oggioni, Alessandro
name: Pugnetti, Alessandra
name: Sarretta, Alessandro
Publisher: name: Zenodo
Year: 2019
Subjects: LTER
open science
database
oceanography

description: The Northern Adriatic Sea (NAS) is one of the 25 research parent sites belonging to the Italian Long Term Ecological Research Network (LTER-Italy). The NAS is undergoing a process, led by different research institutions and projects, of the establishment of a marine ecological observatory, building on the existing facilities and on long-term ecological data. This process requires the implementation of the Open Access and Open Science principles, by creating an open research/data lifecycle, which involves sharing results, data, metadata, methods, and software. To this purposes, the Ecological Northern Adriatic Open Science Observation System (EcoNAOS), conceived within the RITMARE Flagship Project, was developed, with the aim to practically apply the Open Science principles to each step of the work for long term marine data valorisation: sharing papers on research ideas and outcomes, code, data and metadata. The database we refer to, recently made openly available on DEIMS-SDR (the metadata and site registry of LTER-International), consists of 50 years (1965-2015) of observations (more than 10 thousand) on abiotic parameters, and phyto- and zoo-plankton abundances. In this presentation, we briefly discuss the actions concerning the whole Open Science process and those required to operate on the NAS database. We then report some significant or innovating experiences, discussing as well strength points and shortcomings encountered. Finally, we point out optimal solutions and we evidence the main obstacles (afforded and/or possible) to achieve them.
Use of 'off-the-shelf' information extraction algorithms in clinical informatics: a feasibility study of MetaMap annotation of Italian medical notes
Creators: name: Chiaramello, Emma
name: Pinciroli, Francesco
name: Bonalumi, Alberico
name: Caroli, Angelo
name: Tognola, Gabriella
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computation and Language (cs.CL)
subject: Information Retrieval (cs.IR)
subject: FOS: Computer and information sciences

description: Information extraction from narrative clinical notes is useful for patient care, as well as for secondary use of medical data, for research or clinical purposes. Many studies focused on information extraction from English clinical texts, but less dealt with clinical notes in languages other than English. This study tested the feasibility of using 'off the shelf' information extraction algorithms to identify medical concepts from Italian clinical notes. We used MetaMap to map medical concepts to the Unified Medical Language System (UMLS). The study addressed two questions: (Q1) to understand if it would be possible to properly map medical terms found in clinical notes and related to the semantic group of 'Disorders' to the Italian UMLS resources; (Q2) to investigate if it would be feasible to use MetaMap as it is to extract these medical concepts from Italian clinical notes. Results in EXP1 showed that the Italian UMLS Metathesaurus sources covered 91% of the medical terms of the 'Disorders' semantic group, as found in the studied dataset. Even if MetaMap was built to analyze texts written in English, it worked properly also with texts written in Italian. MetaMap identified correctly about half of the concepts in the Italian clinical notes. Using MetaMap's annotation on Italian clinical notes instead of a simple text search improved our results of about 15 percentage points. MetaMap showed recall, precision and F-measure of 0.53, 0.98 and 0.69, respectively. Most of the failures were due to the impossibility for MetaMap to generate Italian meaningful variants. MetaMap's performance in annotating automatically translated English clinical notes was in line with findings in the literature, with similar recall (0.75), F-measure (0.83) and even higher precision (0.95).
description: This paper has been published in the Journal of biomedical informatics, Volume 63, October 2016, Pages 22-32
Open Access & Open Data Strategien in Museen - Was, Warum und Wie
Creators: name: Euler, Ellen
Publisher: name: Zenodo
Year: 2019
Subjects: open access
open data
dataviz
open GLAM
wikidata
LNDI2019

description: Beitrag auf der Langen Nacht der Ideen am 06.06.2019 im Tresor Club Berlin

re:publica auf der #LNDI2019

OPEN – MUSEEN IM DIGITALEN WANDEL

Museen als bedeutsame Orte des Bewahrens, Forschens, Ausstellens und der Reflexion befinden sich in einem Prozess der Transformation. Im digitalen Wandel denken sie über ihre Grundlagen, Ziele und Vermittlung nach. Digitale Erweiterungen versprechen eine Überwindung ihrer physischen Räume und einen schwellenlosen Austausch mit einem vielfältigen Publikum. Wie kann, innerhalb dieser sich verändernden Rahmenbedingungen, der Zugang zu Kulturdaten sinnvoll gestaltet werden? Wie wichtig ist eine europäische Position, die sich auf ihre aufklärerische Tradition bezieht? Können Museen hierbei einen entscheidenden Beitrag leisten?

Hierzu nimmt der Beitrag Stellung und setzt sich mit der Bedeutung der Konzepte Open Access und Open Data als wichtiger Teil bzw. Grundlage der digitalen Strategie von Museen auseinander. Worin liegen die Chancen, aber auch die Herausforderungen? Warum macht es für Museen Sinn, die Konzepte von OA&OD in die digitale Strategie zu implementieren und diese gar hierauf aufzubauen? Viele Museen haben die damit verbundenen Potenziale schon erkannt und verfolgen konsequent eine OA/OD Strategie, aber nicht allen scheinen mit den Konzepten von OA/OD vertraut zu sein, oder haben Vorbehalte, oder verfolgen eindimensionale Ziele (wie z.B. Vermarktungsinteressen) und verhindern dadurch die multiperspektivischen Nutzungen, die auf der Basis von OA/OD möglich wären.
E-/W-band multifunctional sub-system specifications
Creators: name: Andersson, Kristoffer
name: Mingquan, Bao
name: Malmquist, Robert
Publisher: name: Zenodo
Year: 2018
Subjects: radar,
W-band
Specification
Serena

description: This report outlines the specifications of two high-performance W-band systems: a wireless point-to-point system and a short-range radar system. A first order breakdown of the system specifications to front-end sub-system requirements are made. It is found that the front-end sub-system share similar requirements between these two use cases. These requirements will be used for further work on the W-band multifunctional GaN-on-Si MMICS in WP4.
Hidden, one-dimensional, strongly nested, and almost half-filled Fermi surface in Ba$_2$CuO$_{3+y}$ superconductors
Creators: name: Worm, Paul
name: Kitatani, Motoharu
name: Tomczak, Jan M.
name: Si, Liang
name: Held, Karsten
Publisher: name: arXiv
Year: 2021
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: All previous cuprate superconductors display a set of common features: (i) vicinity to a Cu 3$d^{9}$ configuration; (ii) separated CuO$_2$ planes; (iii) superconductivity for doping $δ\sim$ 0.1$-$0.3. Recently [PNAS {\bf 24}, 12156 (2019)] challenged this picture by discovering "highly overdoped" superconducting Ba$_2$CuO$_{3+y}$. Using density-functional theory + dynamical mean-field theory, we reveal a bilayer structure of Ba$_2$CuO$_{3.2}$ of alternating quasi 2D and quasi 1D character. Correlations tune an inter-layer self-doping leading to an almost half-filled, strongly nested quasi 1D $d_{b^2-c^2}$ band, which is prone to strong antiferromagnetic fluctuations, possibly at the origin of superconductivity in Ba$_2$CuO$_{3+y}$.
An occultation event in a triple post-AGB star
Creators: name: Hajduk, M.
name: Zijlstra, A. A.
name: Gesicki, K.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We study the post-AGB central star of the (bipolar) Galactic bulge planetary nebula M 2-29. We have obtained additional HST imaging and SAAO spectroscopy of the object. The star showed a pronounced, long-lasting occultation with subsequent recovery. The event lasted for almost 3 years, with a secondary minimum 9 years later. The photometric behaviour of M 2-29 resembles the dust-occultation events seen in NGC 2346, and is modeled as an occultation by a circumbinary disk, where the binary period is 18 yr. Modulation during the decline shows evidence for another companion with a period of 23 days.
description: 4 pages, 5 figures
The Holographic Conformal Manifold of 3d $\mathcal{N}=2$ $S$-fold SCFTs
Creators: name: Bobev, Nikolay
name: Gautason, Fridrik Freyr
name: van Muiden, Jesse
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We employ a non-compact gauging of four-dimensional maximal supergravity to construct a two-parameter family of AdS$_4$ J-fold solutions preserving $\mathcal{N}=2$ supersymmetry. All solutions preserve $\mathfrak{u}(1)\times\mathfrak{u}(1)$ global symmetry and in special limits we recover the previously known $\mathfrak{su}(2)\times\mathfrak{u}(1)$ invariant $\mathcal{N}=2$ and $\mathfrak{su}(2)\times\mathfrak{su}(2)$ invariant $\mathcal{N}=4$ J-fold solutions. This family of AdS$_4$ backgrounds can be uplifted to type IIB string theory and is holographically dual to the conformal manifold of a class of three-dimensional $S$-fold SCFTs obtained from the $\mathcal{N}=4$ $T[\text{U}(N)]$ theory of Gaiotto-Witten. We find the spectrum of supergravity excitations of the AdS$_4$ solutions and use it to study how the operator spectrum of the three-dimensional SCFT depends on the exactly marginal couplings.
description: 30 pages, 3 figures
Sigmodota contorta WS
Creators: name: O'Loughlin, P. Mark
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Animalia
Echinodermata
Holothuroidea
Apodida
Chiridotidae
Sigmodota
Sigmodota contorta

description: 6. Sigmodota contorta (Ludwig, 1875).
O’Loughlin & VandenSpiegel (2010) published the determinations of numbers of Discovery Expedition synaptid (as apodid) holothuroids (see Table 4 above). They reported 10 specimens of Sigmodota contorta (Ludwig, 1875) (NHMUK 2010.75–84) from Marine Station 82 (Saldanha Bay). The location of Sladanha Bay in South Africa was not noticed, and the locality was mistakenly given as the Falkland Islands. There have been no other reports of Sigmodota contorta from South Africa, and this report for Saldanha Bay is now judged to be a mistake. There is also an RRS William Scoresby station 82 and this is now judged to be the source of the specimens. This station WS 82 was off the Falkland Islands at 140– 144 m.
description: Published as part of O'Loughlin, P. Mark, 2016, The Discovery Expedition sea cucumbers (Echinodermata: Holothuroidea), pp. 53-70 in Memoirs of Museum Victoria 75 on page 69, DOI: 10.24199/j.mmv.2016.75.03, http://zenodo.org/record/10886820
Spherulitic and rotational crystal growth of Quartz thin films
Creators: name: Lutjes, Nick R.
name: Zhou, Silang
name: Antoja-Lleonart, Jordi
name: Noheda, Beatriz
name: Ocelík, Václav
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: To obtain crystalline thin films of alpha-Quartz represents a challenge due to the tendency for the material towards spherulitic growth. Thus, understanding the mechanisms that give rise to spherulitic growth can help regulate the growth process. Here the spherulitic type of 2D crystal growth in thin amorphous Quartz films was analyzed by electron back-scatter diffraction (EBSD). EBSD was used to measure the size, orientation, and rotation of crystallographic grains in polycrystalline SiO2 and GeO2 thin films with high spatial resolution. Individual spherulitic Quartz crystal colonies contain primary and secondary single crystal fibers, which grow radially from the colony center towards its edge, and fill a near circular crystalline area completely. During their growth, individual fibers form so-called rotational crystals, when some lattice planes are continuously bent. The directions of the lattice rotation axes in the fibers were determined by an enhanced analysis of EBSD data. A possible mechanism, including the generation of the particular type of dislocation(s), is suggested.
On tensor products of polynomial representations
Creators: name: Purbhoo, Kevin
name: van Willigenburg, Stephanie
Publisher: name: arXiv
Year: 2007
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05E05, 05E10, 20C30

description: We determine the necessary and sufficient combinatorial conditions for which the tensor product of two irreducible polynomial representations of $GL(n,\mathbb{C})$ is isomorphic to another. As a consequence we discover families of Littlewood-Richardson coefficients that are non-zero, and a condition on Schur non-negativity.
description: 9 pages; final version to appear in Canad. Math. Bull
Frozen storage and cryoprotection of eggs from chum salmon (Oncorhynchus keta)
Creators: name: Craig, Cheryl Lynne
Publisher: name: University of British Columbia
Year: 2010

description: This study was initiated to assess the influence of frozen storage of eggs from sexually mature female chum salmon (Oncorhynchus keta) on the physical properties of the membrane and the yolk. The effectiveness of several salts, sucrose, glycerol and ethylene glycol as cryoprotective agents for preventing any observed cryodamage to the eggs was determined. Electron microscopy was employed to gain an insight into the micro-structure of the chum egg envelope. In addition, whole eggs were subjected to flat plate compressive loading in order to determine the strength of the membrane. The membrane appeared to be a complex structure which enabled intact eggs to withstand compression forces of 0.47 to 1.22 Newtons. The membrane rupture energy ranged from 2.36 to 7.99 (x 10⁻⁴) Joules, and was independent of egg size. Upon freezing fresh eggs at -10°C for 7 days, then thawing in air at 25°C, a drop of 46% in membrane rupture energy was experienced. The flow behaviour of yolk expressed from fresh chum eggs, as examined with the aid of a Brabender rotational viscometer, displayed a non-Newtonian pseudoplastic nature. Analyses by differential scanning calorimetry and polyacrylamide gel electrophoresis indicated the presence of several major proteins. When the yolk material had been frozen at -10°C for 7 days, then thawed in air at 25°C, little variation was observed to occur by any of the techniques used. Immersion in a 2.5 M solution of sodium chloride for 30 min at 25°C was the most effective and consistent cryoprotective agent out of all of the potential agents tested. Caviar produced from previously frozen, then thawed eggs that had been so treated before freezing differed from that produced from both fresh and untreated frozen and thawed eggs in the rate of sodium chloride uptake and yolk apparent viscosity for the same chloride content. Membrane strength of such caviar was similar to that produced from fresh eggs, being greater than that produced from untreated previously frozen and thawed eggs. Sensory evaluation studies indicated that caviar from eggs that had been cryoprotected were ranked similar to caviar from untreated frozen and thawed eggs in the parameters of yolk viscosity and membrane strength. Both were significantly different from high quality caviar produced from fresh eggs. However, the hedonic ratings indicated a preference for caviar from cryoprotected eggs over that processed from untreated frozen and thawed eggs. Results of this study indicate that cryoprotection of chum eggs to reduce the defects caused by frozen storage is feasible. With further research, this technique holds potential advantages for the caviar industry.
First-Principles Calculations of Exciton Radiative Lifetimes in Monolayer Graphitic Carbon Nitride Nanosheets: Implications for Photocatalysis
Creators: name: Fiorentin, Michele Re
name: Risplendi, Francesca
name: Palummo, Maurizia
name: Cicero, Giancarlo
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: In this work, we report on the exciton radiative lifetimes of graphitic carbon nitride monolayers in the triazine- (gC$_3$N$_4$-t) and heptazine-based (gC$_3$N$_4$-h) forms, as obtained by means of ground- plus excited-state ab initio calculations. By analysing the exciton fine structure, we highlight the presence of dark states and show that the photo-generated electron-hole pairs in gC$_3$N$_4$-h are remarkably long-lived, with an effective radiative lifetime of 260 ns. This fosters the employment of gC$_3$N$_4$-h in photocatalysis and makes it attractive for the emerging field of exciton devices. Although very long intrinsic radiative lifetimes are an important prerequisite for several applications, pristine carbon nitride nanosheets show very low quantum photo-conversion efficiency, mainly due to the lack of an efficient e-h separation mechanism. We then focus on a vertical heterostructure made of gC$_3$N$_4$-t and gC$_3$N$_4$-h layers which shows a type-II band alignment and looks promising for achieving net charge separation.
A high-precision variational approach to three- and four-nucleon bound and zero-energy scattering states
Creators: name: Kievsky, A.
name: Rosati, S.
name: Viviani, M.
name: Marcucci, L. E.
name: Girlanda, L.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The hyperspherical harmonic (HH) method has been widely applied in recent times to the study of the bound states, using the Rayleigh-Ritz variational principle, and of low-energy scattering processes, using the Kohn variational principle, of A=3 and 4 nuclear systems. When the wave function of the system is expanded over a sufficiently large set of HH basis functions, containing or not correlation factors, quite accurate results can be obtained for the observables of interest. In this paper, the main aspects of the method are discussed together with its application to the A=3 and 4 nuclear bound and zero-energy scattering states. Results for a variety of nucleon-nucleon (NN) and three-nucleon (3N) local or non-local interactions are reported. In particular, NN and 3N interactions derived in the framework of the chiral effective field theory and NN potentials from which the high momentum components have been removed, as recently presented in the literature, are considered for the first time within the context of the HH method. The purpose of this paper is two-fold. First, to present a complete description of the HH method for bound and scattering states, including also detailed formulas for the computation of the matrix elements of the NN and 3N interactions. Second, to report accurate results for bound and zero-energy scattering states obtained with the most commonly used interaction models. These results can be useful for comparison with those obtained by other techniques and are a significant test for different future approaches to such problems.
description: 51 pages
Cosmic ray protons in the energy range $10^{16}-10^{18.5}$ eV: stochastic gyroresonant acceleration in hypernova shocks?
Creators: name: Fan, Yi-Zhong
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The hypernovae (HNe) associated with Gamma-ray Bursts (GRBs) may have a fairly steep energy-velocity distribution, i.e., $E(\geq β)\propto β^{-q}$ for $q<2$ and $β\geq β_o$, where $β$ is the velocity of the material and $β_o \sim 0.1$ is the velocity of the slowest ejecta of the HN explosion, both in units of the speed of light $(c)$. The cosmic ray protons above the second knee but below the ankle may be accelerated by the HN shocks in the velocity range of $β\sim β_o - 4β_o$. When $β\leq 4β_o$, the radius of the shock front to the central engine is very large and the medium decelerating the HN outflow is very likely to be homogeneous. With this argument, we show that for $q\sim 1.7$, as inferred from the optical modelling of SN 2003lw, the stochastic gyroresonant acceleration model can account for the spectrum change of high energy protons around the second knee. The self-magnetized shock acceleration model, however, yields a too much steep spectrum that is inconsistent with the observation unless, the medium surrounding the HN is a free wind holding up to a (unrealistic large) radius $\sim 1-10 {\rm kpc}$ or alternatively the particle acceleration mainly occurs in a narrow "dense" shell that terminates the free wind at a radius $\sim 10^{19}$ cm.
description: We provide in footnote 3 an additional evidence for a constant number density medium surrounding the progenitor of GRB 021203/SN 2003lw
Pendleburyella undetermined
Creators: name: Tan, Ming Kai
name: Muhammad, Amira Aqilah
name: Wahab, Rodzay Bin Haji Abdul
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Orthoptera
Gryllidae
Pendleburyella
Pendleburyella undetermined

description: Pendleburyella sp. “ intermedia Chopard”
(Figs. 8E, 12)
Material examined. MALAYSIA • 1♁ (type); Pahang, Fraser’s Hill, at light; 12 July 1936; 0017 (MP).
Remarks. The ‘type’ specimen was identified as “ Pendleburya intermedia ” by Chopard, but we did not find the original description of this species in Chopard (1969) where the genus and species were first described. We also did not find other publications where this species was mentioned, and consequently it was also not found in the Orthoptera Species File (Cigliano et al., 2023). This specimen is large and shows clear differences with Pendleburyella sp. 2 from Selangor – Pahang, The Gap (not too far from Fraser’s Hill) (Table 1). Unfortunately, the specimen also appeared damaged at the abdominal apex and the male genitalia may be lost. As the male genitalia was not available, we did not describe and name this species unless newer material from Fraser’s Hill can be collected.
description: Published as part of Tan, Ming Kai, Muhammad, Amira Aqilah & Wahab, Rodzay Bin Haji Abdul, 2023, The taxonomy and bioacoustics of the elusive crickets from the genus Pendleburyella Chopard, 1969 (Gryllidae: Pentacentrinae), pp. 131-148 in Zootaxa 5277 (1) on page 144, DOI: 10.11646/zootaxa.5277.1.6, http://zenodo.org/record/7893034
Quantum thermal transport from classical molecular dynamics
Creators: name: Wang, Jian-Sheng
Publisher: name: arXiv
Year: 2007
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Using a generalized Langevin equation of motion, quantum ballistic thermal transport is obtained from classical molecular dynamics. This is possible because the heat baths are represented by random noises obeying quantum Bose-Einstein statistics. The numerical method gives asymptotically exact results in both the low-temperature ballistic transport regime and high-temperature strongly nonlinear classical regime. The method can be thought of as a semi-classical approximation to the quantum transport problem. A one-dimensional quartic on-site model is used to demonstrate the crossover from ballistic to diffusive thermal transport.
description: 4 pages with 2 figures
Optimalisasi Keputusan Investasi IPO dengan TOPSIS
Creators: name: Wicaksono, Soetam Rizky
Publisher: name: SENASIF 2023
Year: 2023

description: Penelitian ini bertujuan untuk menawarkan analisis objektif pemilihan saham IPO menggunakan Technique for Order Preference by Similarity to Ideal Solution (TOPSIS), dengan fokus khusus pada pasar saham Indonesia. Penelitian ini mengidentifikasi lima kriteria utama untuk analisis, yaitu kinerja keuangan, pertumbuhan industri, kapitalisasi pasar, reputasi perusahaan, dan kinerja penjamin emisi. Kriteria ini dipilih karena pengaruhnya yang besar terhadap potensi pengembalian investasi IPO. Menggunakan skenario hipotetis yang melibatkan empat saham IPO, hasil penelitian menunjukkan penerapan TOPSIS dalam menentukan peringkat alternatif ini. Hasil analisis menggambarkan efektivitas TOPSIS sebagai alat pengambilan keputusan, terutama bagi investor pemula. Namun, penelitian ini juga menyoroti keterbatasan TOPSIS, termasuk kebutuhan untuk penugasan bobot subjektif, independensi kriteria yang diasumsikan, dan potensi pengecualian faktor kualitatif vital. Penelitian ini menggarisbawahi perlunya menggunakan metode sistematis dan obyektif dalam pengambilan keputusan investasi, sementara juga menggabungkan analisis kualitatif dan kuantitatif lainnya untuk evaluasi yang lebih komprehensif.
Distributed Quantum Computing with QMPI
Creators: name: Häner, Thomas
name: Steiger, Damian S.
name: Hoefler, Torsten
name: Troyer, Matthias
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: Emerging Technologies (cs.ET)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Practical applications of quantum computers require millions of physical qubits and it will be challenging for individual quantum processors to reach such qubit numbers. It is therefore timely to investigate the resource requirements of quantum algorithms in a distributed setting, where multiple quantum processors are interconnected by a coherent network. We introduce an extension of the Message Passing Interface (MPI) to enable high-performance implementations of distributed quantum algorithms. In turn, these implementations can be used for testing, debugging, and resource estimation. In addition to a prototype implementation of quantum MPI, we present a performance model for distributed quantum computing, SENDQ. The model is inspired by the classical LogP model, making it useful to inform algorithmic decisions when programming distributed quantum computers. Specifically, we consider several optimizations of two quantum algorithms for problems in physics and chemistry, and we detail their effects on performance in the SENDQ model.
title: e-Jahresbericht 2019 des DAI – TANA
title: e-Jahresbericht 2019 des DAI – TANA
titleType: Subtitle
Creators: name: Deutsches Archäologisches Institut
Publisher: name: Deutsches Archäologisches Institut
Year: 2020

description: DAI e-Jahresberichte, e-Jahresbericht 2019 des Deutschen Archäologischen Instituts