cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Distributions of Gamma-Ray Bursts and Blazars in the $L_{\rm p}-E_{\rm p}$ Plane and Possible Implications for their Radiation Physics
Creators: name: Lyu, Fen
name: Liang, En-Wei
name: Liang, Yun-Feng
name: Wu, Xue-Feng
name: Zhang, Jin
name: Sun, Xiao-Na
name: Lu, Rui-Jing
name: Zhang, Bing
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present a spectral analysis for a sample of redshift known GRBs observed with {\em Fermi}/GBM. Together with the results derived from our systematical spectral energy distribution modeling with the leptonic models for a {\em Fermi}/LAT blazar sample, we compare the distributions of the GRBs and the blazars by plotting the synchrotron peak luminosity ($L_{\rm s}$) and the corresponding peak photon energy $E_{\rm s}$ of blazars in the $L_{\rm p}-E_{\rm p}$ plane of GRBs, where $L_{\rm p}$ and $E_{\rm p}$ are the peak luminosity and peak photon energy of the GRB time-integrated $νf_ν$ spectrum, respectively. The GRBs are in the high-$L_{\rm p}$, high-$E_{\rm p}$ corner of the plane and a tight $L_{\rm p}-E_{\rm p}$ relation is found, i.e., $L_{\rm p}\propto E_{\rm p}^{2.13^{+0.54}_{-0.46}}$. Both FSRQs and LBLs are clustered in the low-$E_{\rm p}$, low-$L_{\rm p}$ corner. IBLs and HBLs have $E_{\rm s}\sim 2\times 10^{-3} - 10^{2}$ keV and $L_{\rm s} \sim 10^{44} - 10^{47}$ erg s$^{-1}$, but no dependence of $L_{\rm s}$ on $E_{\rm s}$ is found. We show that the tight $L_p-E_p$ relation of GRBs is potentially explained with the synchrotron radiation of fast-cooling electrons in a highly magnetized ejecta, and the weak anti-correlation of $L_{\rm s}-E_{\rm s}$ for FSRQs and LBLs may be attributed to synchrotron radiation of slow-cooling electrons in a moderately magnetized ejecta. The distributions of IBLs and HBLs in the $L_{\rm p}-E_{\rm p}$ plane may be interpreted with synchrotron radiation of fast-cooling electrons in a matter-dominated ejecta. These results may present a unified picture for the radiation physics of relativistic jets in GRBs and blazars within the framework of the leptonic synchrotron radiation models.
description: 23 pages, 2 tables, 2 figures. Accepted for publication in ApJ
Low pT photon spectra and flow in Au+Au at 200 GeV at PHENIX
Creators: name: Ujvari, Balazs
Publisher: name: Zenodo
Year: 2024
Subjects: newtrends24
phenix
photon
thermal photon
direct photon
au+au
elliptic
flow
multiplicity
scaling
rgamma
p+p

description: Talk presented at the New Trends in High Energy anf Low-x Physics 2024 conference
Gian Planets in the Thermal-IR
Creators: name: Fletcher, Leigh N.
name: Orton, Glenn
name: Greathouse, Tommy
name: Antuñano, Arrate
name: Blake, James
name: Roman, Michael
name: Donnelly, Padraig
name: Rowe-Gurney, Naomi
name: Sinclair, James
Publisher: name: Zenodo
Year: 2020

description: Mid-infrared imaging and spectroscopy provides a powerful diagnostic of the atmospheric conditions on the giant planets of our Solar System, from their churning tropospheric cloud decks to their seasonally-changing stratospheres. Mid-infrared studies have revealed long-term cycles of atmospheric variability; eruptions of powerful convective storms; changes within long-lived vortices; and can even diagnose the aftermath of comet/asteroid strikes. Observations in the N and Q bands provide our only unique measurements of atmospheric temperature, composition, and cloud opacity, and yet all current (Juno) and future (JUICE) robotic missions to Jupiter lack this crucial capability. Ground-based observations (from ESO, Subaru, Gemini, and NASA's IRTF) therefore play a vital supporting role in observing these four worlds, and can even provide new discoveries at distant Uranus and Neptune, despite atmospheric temperatures approaching 50 K, and angular sizes of 2-4". Continued imaging and spectroscopy capabilities in the N and Q bands, over a 1-arcmin field of view, is vital for the continued exploration of these giant planets.
Critical Vulnerability of the Leading Industries of the Polish Economy
Creators: name: Tworzydło, Dariusz
Publisher: name: figshare
Year: 2022
Subjects: subject: 200104 Media Studies
subject: FOS: Media and communications

description: The perspective of the division into industries gives the opportunity to implement more advanced analyses regarding the type and frequency of image crises. Scientifi c objective: The presentation of an example of how to select oppressive industries based on a model referring to the leading branches of the Polish economy. Research methods: The quantitative research using an auditorium questionnaire conducted among PR specialists and desk research, incl. 500 List of the “Rzeczpospolita” daily. Results and conclusions: Studies have shown that there is a group of industries operating on the market that are particularly vulnerable to the occurrence of communicational crisis situations. The results show that the enterprises included in this group (e.g. Companies representing the public, food, pharmaceutical or telecommunications sectors) are more likely to attract image crises and are more often forced to manage them. Therefore, the company’s business activity has been analysed based on the principle of a crisis magnetism, which attracts many unfavourable phenomena from the internal and external environment of the organisation. Cognitive value: The presented results may provide support for both the assessment of the effects of public relations and media science techniques (e.g. media coverage analysis).
(:unas) unassigned
Creators: name: (:Unkn) Unknown
Publisher: name: Universita' degli Studi di Salerno
Year: 2024

description: Diretta da Maurizio Scaparro in Eleonora, ultima notte a Pittsburgh di Ghigo De Chiara, Annamaria Guarnieri è stata premiata come migliore attrice di monologo a “Le Maschere del teatro italiano” 2012. La sua interpretazione intensa, a tratti malinconica e sognante, talvolta impetuosa e tormentata, è stata definita una grande lezione di recitazione, una prova di notevole sapienza attoriale, che, senza puntare su un’impostazione realistica, è riuscita nell'intento di restituire un’immagine di Duse ricca di sfumature. Secondo gli osservatori l’esito particolarmente felice dello spettacolo è dovuto a quelle “vie segrete professionali e umane”, che hanno fatto parlare la stessa lingua teatrale a due attrici lontane nel tempo. Nell’intervista Guarnieri racconta come sia riuscita, partendo da una foto, ad individuare una chiave interpretativa per ridare vita sulla scena a un’artista dalla personalità così complessa, mentre sola e infelice, oppressa dalla sua stessa grandezza, ripercorre in punto di morte i momenti più importanti dell'esistenza, mescolando ricordi personali a ricordi professionali.
description: Directed by Maurizio Scaparro in Eleonora, ultima notte a Pittsburgh by Ghigo De Chiara, Annamaria Guarnieri was awarded as the best monologue actress at “Le Maschere del teatro italiano” 2012. Her particularly intense interpretation, sometimes melancholic and dreamy, has been called a great acting lesson, a proof of remarkable acting skill, that, without aiming for a realistic setting, succeeded in its intent to convey a Duse’s image rich in nuances. According to observers, the particularly happy outcome of the show is due to those secret professional and human ways that made two actresses distant in time speak the same theatrical language. In the interview Annamaria Guarnieri talks about how she managed to identify an interpretative key starting from a photo to bringing an artist with such a complex personality back to life on the stage, while alone and unhappy, oppressed by her own greatness, she retraces the most important moments of her life mixing personal and professional memories.
MPEC 2023-D60 : 2023 DO
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2023 DO

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
A Subarcsecond L- and M-band Imaging Atlas of Local Active Galactic Nuclei
Creators: name: Isbell, Jacob
name: Burtscher, Leonard
name: Asmus, Daniel
name: Pott, Jörg-Uwe
name: Couzy, Paul
name: Stalevski, Marko
name: Gámez Rosas, Violeta
name: Meisenheimer, Klaus
Publisher: name: Zenodo
Year: 2020

description: We present the largest currently existing subarcsecond 3-5 micron atlas of 118 local (z < 0.3) active galactic nuclei (AGN). Each AGN was observed with VLT ISAAC in the L- and/or M-bands between 2000 and 2013. We detect 92 sources in the L-band and 83 sources in the M-band. We separate the flux into unresolved nuclear flux and resolved flux through two-Gaussian fitting. We report the nuclear flux, extended flux, apparent size, and PA of each source, giving upper-limits for sources which are undetected. Using WISE W1 and W2 photometry we derive relations predicting the nuclear LM fluxes for Sy1 and Sy2 AGN based on their W1-W2 color and WISE fluxes. Lastly, we compare the measured mid-IR colors to those predicted by dusty torus models SKIRTOR, CAT3D, and CAT3D-WIND, finding best agreement with the latter. We find that several AGN are bluer than models allow. We find that this is most plausibly stellar light contamination within the ISAAC L-band nuclear fluxes.
Dynamical symmetry enhancement near IIA horizons
Creators: name: Gran, U.
name: Gutowski, J.
name: Kayani, U.
name: Papadopoulos, G.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We show that smooth type IIA Killing horizons with compact spatial sections preserve an even number of supersymmetries, and that the symmetry algebra of horizons with non-trivial fluxes includes an sl(2,R) subalgebra. This confirms the conjecture of [1] for type IIA horizons. As an intermediate step in the proof, we also demonstrate new Lichnerowicz type theorems for spin bundle connections whose holonomy is contained in a general linear group.
description: 26 pages
Response from Stanley Graves to David Walker, Rehabilitation of Building 2376, Fort Sam Houston, Texas
Creators: name: Fleming, Sharon E.
name: Graves, Stanley O.
Publisher: name: Texas Historical Commission
Year: 1998
Subjects: subject: JBSA-Sam Houston
valueUri: https://core.tdar.org/browse/geographic-keyword/82532/jbsa-sam-houston
subject: San Antonio
valueUri: https://core.tdar.org/browse/geographic-keyword/4149/san-antonio
subject: Bexar (County)
valueUri: https://core.tdar.org/browse/geographic-keyword/4150/bexar-county
subject: Texas
valueUri: https://core.tdar.org/browse/geographic-keyword/6923/texas
subject: Fort Sam Houston National Historic Landmark District
valueUri: https://core.tdar.org/browse/geographic-keyword/82955/fort-sam-houston-national-historic-landmark-district
subject: Historic
valueUri: https://core.tdar.org/browse/culture-keyword/25/historic
subject: Governmental Structure
valueUri: https://core.tdar.org/browse/site-type/318/governmental-structure
subject: Historic Governmental Structure
valueUri: https://core.tdar.org/browse/site-type/320/historic-governmental-structure
subject: Building 2376
valueUri: https://core.tdar.org/browse/other-keyword/152909/building-2376
subject: Architectural Documentation
valueUri: https://core.tdar.org/browse/investigation-type/16/architectural-documentation
subject: Heritage Management
valueUri: https://core.tdar.org/browse/investigation-type/24/heritage-management

description: The Texas Historical Commission has received and reviewed a recent letter from Fort Sam Houston regarding alterations to Building 2376. In order to determine the type of effect, the Commission requests documents that thoroughly describe the work currently proposed. Copied to this correspondence is David Brigham (Cultural Resource Manager, Fort Sam Houston) and Mike Hilger (Historical Architect, Fort Sam Houston).
Building global solidarity in a permacrisis: lessons learned from the Covid-19 and future directions for a Pandemic Treaty
Creators: name: Hosseini, Mina
Publisher: name: Zenodo
Year: 2023
Subjects: COMPHACRISIS
Pandemic Treaty
WHO
MSCA
UCD Sutherland School of Law
COVID-19
Competition Law
IP Law
Access to Vaccines

description: One of the lessons from the COVID-19 pandemic is the importance of being prepared for the worst-case scenario. COVID-19 has shown the fragility and inequity of the global health system and the need for global solidarity and collaboration to deal with health crises in an age of complex and interconnected crises (permacrisis). The World Health Organization (WHO) is negotiating a draft of the Pandemic Treaty that aims to promote prevention, preparedness, and response to pandemics. The Pandemic Treaty also aims to promote sustainable and equitable production and transfer of technology and know-how. This is especially relevant to the intellectual property of vaccines and other pandemic-related products, which was a challenging topic during the COVID-19 pandemic. The need for legal measures to improve fair access to vaccines, medicines and other therapeutic products for the next health crisis is an issue under negotiation in the pandemic treaty.
 Dr Mina Hosseini presented her paper at the Royal Irish Academy Conference (Human (in) security in an unsettled World) on May 2, 2023. She examined the key principles in the zero draft of the treaty on pandemic preparedness and response, including human rights aspects, access to vaccines and other health products, state sovereignty, data sharing, transparency, IP and competition law aspects, accountability and the role of the WHO in implementing the treaty. She also highlighted the recent principles and issues under negotiation in the Pandemic Treaty and discussed their implications for global health governance, human rights, IP and competition law. By analysing the zero draft of the treaty, she shed light on the potential outcomes and challenges of implementing a global treaty for pandemic prevention, preparedness, and response. This project has received funding from the European Union’s Horizon Europe MSCA programme under grant agreement No. 101061575.
The short-term effects of salinization on anaerobic nutrient cycling and microbial community structure in sediment from a freshwater wetland
Creators: name: Baldwin, Darren S
name: Rees, Gavin N
name: Mitchell, Alison M
name: Watson, Garth
name: Williams, Janice
Publisher: name: La Trobe
Year: 2023

description: La Trobe University Faculty of Science, Technology and Engineering Murray Darling Freshwater Research Centre

MDFRC item.

Wetlands in many inland catchments are being subjected to increasing salinity. To expand our limited understanding of how increasing salinity will alter carbon and nutrient dynamics in freshwater sediments, we carried out microcosm experiments to examine the acute effects of increasing salinity on the anaerobic cycling of carbon, nutrients (N, P, and S), metals (Fe and Mn), and microbial community structure in sediments from a non-salt-impacted freshwater wetland. Sediments were collected from a wetland on the River Murray floodplain, south eastern Australia and incubated with NaCl concentrations ranging from 0 to 100 mmol L-1. Increasing NaCl concentration led to the immediate release of between about 80 and 190 µmol L-1 ammonium and 235 to 3300 µmol L-1 Fe(II) from the sediments, the amount released `increasing with NaCl concentration. Conversely, net phosphate release decreased with increasing NaCl concentration. The overall microbial community structure, determined from phospholipid fatty acid profiles, changed only at the highest NaCl loadings, with evidence of a decrease in microbial diversity. Bacterial community structure, determined by examining terminal restriction fragment length polymorphism (T-RFLP) of the bacterial 16S rRNA gene, showed little response to increasing NaCl concentration. Conversely, the archaeal (methanogen) population, determined by examining T-RFLP of the archaeal 16S rRNA gene, showed significant changes with increasing NaCl loading. This shift corresponded with a significant decrease in methane production from salt-impacted sediments and therefore shows a linkage between microbial community structure and an ecosystem process.
The influence of diffuse scattered light I. The PSF and its role to observations of the edge-on galaxy NGC 5907
Creators: name: Sandin, Christer
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: All telescopes and instruments are to some degree affected by scattered light. It is possible to estimate the amount of such scattered light, and even correct for it, with a radially extended point spread function (PSF). The outer parts of the PSF have only rarely been determined, since they are faint and therefore difficult to measure. A mostly complete overview of existing properties and measurements of radially extended PSFs is presented, to both show their similarities and to indicate how bright extended objects can be used to measure the faintest regions. The importance of the far wings of the PSF and their possible temporal variations are demonstrated in three edge-on galaxy models. The same study is applied to the first edge-on galaxy where earlier observations reveal a halo, NGC 5907. All PSFs were collected in two diagrams, after they were offset or normalized, when that was possible. Surface-brightness structures of edge-on galaxies were modelled and analysed to study scattered-light haloes that result with an exponential disc. The models were convolved with both a lower-limit PSF and a more average PSF. The PSF of the observed data could be used in the case of NGC 5907. The comparison of the PSFs demonstrates a lower-limit $r^{-2}$ power-law decline at larger radii. The analysis of the galaxy models shows that also the outer parts of the PSF are important to correctly model and analyse observations and, in particular, fainter regions. The reassessed analysis of the earlier measurements of NGC 5907 reveals an explanation for the faint halo in scattered light, within the quoted level of accuracy.
description: 17 pages, 9 figures, Astronomy & Astrophysics, in press
Response Draft from Scott Shepherd to Moore, Building 907 Screen Guards, Randolph Air Force Base, Texas
Creators: name: Shepherd, Scott B.
Year: 2008
Subjects: subject: Randolph Field Historic Landmark District
valueUri: https://core.tdar.org/browse/geographic-keyword/83364/randolph-field-historic-landmark-district
subject: San Antonio
valueUri: https://core.tdar.org/browse/geographic-keyword/4149/san-antonio
subject: Texas
valueUri: https://core.tdar.org/browse/geographic-keyword/6923/texas
subject: Randolph Air Force Base
valueUri: https://core.tdar.org/browse/geographic-keyword/78971/randolph-air-force-base
subject: Historic
valueUri: https://core.tdar.org/browse/culture-keyword/25/historic
subject: Governmental Structure
valueUri: https://core.tdar.org/browse/site-type/318/governmental-structure
subject: Historic Governmental Structure
valueUri: https://core.tdar.org/browse/site-type/320/historic-governmental-structure
subject: Building 907
valueUri: https://core.tdar.org/browse/other-keyword/146471/building-907
subject: Architectural Documentation
valueUri: https://core.tdar.org/browse/investigation-type/16/architectural-documentation
subject: Heritage Management
valueUri: https://core.tdar.org/browse/investigation-type/24/heritage-management

description: An evaluation was conducted on Building 907 at Randolph Air Force Base, Texas. It was determined that the project involving the screen guards on the building will have no Adverse Effect on the historic property or its landmark district.
A two-hase AGN torus as constraiined from X-ray and mid-IR observations
Creators: name: Esparza Arredondo, Donaji
name: González Martín, Omaira
name: Dultzin Kessler, Deborah
name: Ramos-Almeida, Cristina
name: Fritz, Jacopo
name: Masegosa, Josefa
name: Osorio-Cavijo, Natalia
name: Garcia-Bernete, Ismael
Publisher: name: Zenodo
Year: 2020

description: To understand the active galactic nuclei (AGN) class diversity, the obscuration from some lines of sight of the inner parts of a geometrically and optically thick dusty gas torus is required. This torus is not spatially resolved even for the closest AGN. Currently, several models at mid-IR and X-ray wavelengths have been developed to describe the structure and distribution of this material. However, questions, including how the torus mid-IR and X-ray emission are related remain unanswered. Here, I will present the results obtained to compare the dust and gas distributions in a sample of nearby AGNs with NuSTAR and Spitzer spectra available. We find that the models that better reproduce the X-ray and mid-IR spectra are smooth and clumpy, respectively. These results reinforce the link between the mid-IR and X-rays in the context of the obscuring structure. Moreover, they are key for future mid-IR development, both from ground and space telescopes.
Southern Massive Stars at High Angular Resolution: Observational Campaign and Companion Detection
Creators: name: Sana, H.
name: Bouquin, J. -B. Le
name: Lacour, S.
name: Berger, J. -P.
name: Duvert, G.
name: Gauchet, L.
name: Norris, B.
name: Olofsson, J.
name: Pickel, D.
name: Zins, G.
name: Absil, O.
name: de Koter, A.
name: Kratter, K.
name: Schnurr, O.
name: Zinnecker, H.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Multiplicity is one of the most fundamental observable properties of massive O-type stars and offers a promising way to discriminate between massive star formation theories. Nevertheless, companions at separations between 1 and 100 mas remain mostly unknown due to intrinsic observational limitations. [...] The Southern MAssive Stars at High angular resolution survey (SMASH+) was designed to fill this gap by providing the first systematic interferometric survey of Galactic massive stars. We observed 117 O-type stars with VLTI/PIONIER and 162 O-type stars with NACO/SAM, respectively probing the separation ranges 1-45 and 30-250mas and brightness contrasts of Delta H < 4 and Delta H < 5. Taking advantage of NACO's field-of-view, we further uniformly searched for visual companions in an 8''-radius down to Delta H = 8. This paper describes the observations and data analysis, reports the discovery of almost 200 new companions in the separation range from 1mas to 8'' and presents the catalog of detections, including the first resolved measurements of over a dozen known long-period spectroscopic binaries. Excluding known runaway stars for which no companions are detected, 96 objects in our main sample (DEC < 0 deg; H<7.5) were observed both with PIONIER and NACO/SAM. The fraction of these stars with at least one resolved companion within 200mas is 0.53. Accounting for known but unresolved spectroscopic or eclipsing companions, the multiplicity fraction at separation < 8'' increases to f_m = 0.91 +/- 0.03. The fraction of luminosity class V stars that have a bound companion reaches 100% at 30mas while their average number of physically connected companions within 8'' is f_c = 2.2 +/- 0.3. This demonstrates that massive stars form nearly exclusively in multiple systems. Additionally, the nine non-thermal (NT) radio emitters observed by SMASH+ are all resolved [...]
description: 57 pages, 20 figures, 7 tables; accepted for publication in ApJS
D4.10 Issue reports on how copyright exceptions and other permitted uses that are relevant for documentary filmmakers and immersive digital heritage practitioners are understood in the Netherlands and the UK
Creators: name: Meletti, Bartolomeo
name: van Gompel, Stef
Publisher: name: Zenodo
Year: 2021
Subjects: copyright
filmmakers
creators
curators
digital heritage

description: This reCreating Europe deliverable D4.10 outlines the most pressing copyright-related issues and concerns faced by documentary filmmakers and by curators and creators of immersive experiences in the United Kingdom and the Netherlands. It is the main output of the first stage of Task 4.3 Developing best practice codes for creative audiovisual re-use, led by CREATe (University of Glasgow) and IViR (University of Amsterdam) as part of Work Package 4 Creative Industries. After a short introduction to the project and its methodology (Section 1), the document offers an overview of the issues identified and discussed by the communities being examined in relation to copyright and the lawful reuse of audiovisual materials. The findings of four online workshops – one for each community in the two jurisdictions under consideration – are systematised in four issue reports (Sections 2 and 3). Each issue report describes the creative and cultural practice of the workshops’ participants and the core copyright-related concerns they identified. The main points discussed by participants under each area of concern are reported. The copyright issues that documentary filmmakers reported as being the most worrying related to access (identifying and negotiating with right owners and archives), use (exceptions and limitations/fair dealing vs rights clearance) and distribution (territoriality of the law). The main copyright concerns raised by curators and creators of immersive digital heritage resolved around the questions of identifying, contacting and negotiating with rights holders, the uncertainties of knowing whether your use is fair/lawful or not, and responsibilities (for infringement and preservation). This was the same in both jurisdictions. Section 4 provides a snapshot of the copyright exceptions and limitations in UK and Dutch law which may cover the uses of protected content discussed by participants. Finally, Section 5 encompasses conclusive remarks and the next steps of the project. Please note: a screen-reader accessible version of this report can be downloaded via this link https://docs.google.com/uc?export=download&id=1G7FTAXDppRDCo2RTF9gwONuOmcMMG0pJ
MPEC 2023-D61 : 2023 DP
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2023 DP

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Unveiling substructures in disks around massive young stellar objects
Creators: name: Frost, Abigail
name: Oudmaijer, René
name: Lumsden, Stuart
name: de Wit, Willem-Jan
Publisher: name: Zenodo
Year: 2020

description: Protostellar disks play key roles in the accretion process and formation of planetesimals for low-mass stars, and form various substructures, as different physical processes occur within them. Massive stars (M>8Mdot) form from the same clouds of dust and gas as low-mass stars and affect the both their own stellar environment and galaxies as a whole. Despite their importance, the formation of massive stars is poorly understood as they are deeply embedded, distant and rare, which introduces more observational challenges. While disks have recently been found around massive protostars massive disk evolution is yet to be constrained. In my talk, I will discuss our recent work which has, using a multi-scale analysis on a sample of massive young stellar objects (MYSOs), detected inner holes and gap-like substructures within the MYSO disks. I will also tie these geometrical traits to an independently determined evolutionary sequence and discuss what this means for disk evolution around MYSOs.
CanariCam@GTC Recommisioning & Lessons Learned
Creators: name: Fernández-Acosta, Sergio
Publisher: name: Zenodo
Year: 2020

description: CanariCam is the facility multi-mode mid-IR (8-25 um) camera on the 10-m Gran Telescopio CANARIAS (GTC) on La Palma, Spain. It was designed and built by the University of Florida (UF – PI: Charles Telesco) and provides our community with imaging, spectroscopic and unique polarimetric capabilities at, or near, the diffraction limit of the telescope. Since 2012, it had been operating in queue mode at one of the Nasmyth focal stations, until it was temporarily decommissioned in 2016. Now, following an upgrade project, started in mid-2018 as a joint effort between GTC and the UF, it has been installed and recommissioned on a different folded-Cassegrain focus. We will present an overview of the scientific capabilities and highlights of CanariCam@GTC, along with the lessons learned during its operation and recent upgrade activities, results from the technical observations, its current status, and prospects for the future, in the context of a very demanding Instrumentation Program.
Light rings as observational evidence for event horizons: long-lived modes, ergoregions and nonlinear instabilities of ultracompact objects
Creators: name: Cardoso, Vitor
name: Crispino, Luis C. B.
name: Macedo, Caio F. B.
name: Okawa, Hirotada
name: Pani, Paolo
Publisher: name: arXiv
Year: 2014
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Ultracompact objects are self-gravitating systems with a light ring. It was recently suggested that fluctuations in the background of these objects are extremely long-lived and might turn unstable at the nonlinear level, if the object is not endowed with a horizon. If correct, this result has important consequences: objects with a light ring are black holes. In other words, the nonlinear instability of ultracompact stars would provide a strong argument in favor of the "black hole hypothesis," once electromagnetic or gravitational-wave observations confirm the existence of light rings. Here we explore in some depth the mode structure of ultracompact stars, in particular constant-density stars and gravastars. We show that the existence of very long-lived modes -- localized near a second, stable null geodesic -- is a generic feature of gravitational perturbations of such configurations. Already at the linear level, such modes become unstable if the object rotates sufficiently fast to develop an ergoregion. Finally, we conjecture that the long-lived modes become unstable under fragmentation via a Dyson-Chandrasekhar-Fermi mechanism at the nonlinear level. Depending on the structure of the star, it is also possible that nonlinearities lead to the formation of small black holes close to the stable light ring. Our results suggest that the mere observation of a light ring is a strong evidence for the existence of black holes.
description: 10 pages, RevTeX4
Letter from Neil Kanno to Don Klima, Installation of External Handrails on Building 100, Randolph Air Force Base, Texas
Creators: name: Kanno, Neil K.
Publisher: name: Randolph Air Force Base
Year: 1999
Subjects: subject: San Antonio
valueUri: https://core.tdar.org/browse/geographic-keyword/4149/san-antonio
subject: Bexar (County)
valueUri: https://core.tdar.org/browse/geographic-keyword/4150/bexar-county
subject: Texas
valueUri: https://core.tdar.org/browse/geographic-keyword/6923/texas
subject: Randolph Air Force Base
valueUri: https://core.tdar.org/browse/geographic-keyword/78971/randolph-air-force-base
subject: Historic
valueUri: https://core.tdar.org/browse/culture-keyword/25/historic
subject: Historic Governmental Structure
valueUri: https://core.tdar.org/browse/site-type/320/historic-governmental-structure
subject: Non-Domestic Structures
valueUri: https://core.tdar.org/browse/site-type/309/non-domestic-structures
subject: Building 100
valueUri: https://core.tdar.org/browse/other-keyword/153390/building-100
subject: Spanish Colonial Revival
valueUri: https://core.tdar.org/browse/other-keyword/127724/spanish-colonial-revival
subject: Architectural Documentation
valueUri: https://core.tdar.org/browse/investigation-type/16/architectural-documentation
subject: Heritage Management
valueUri: https://core.tdar.org/browse/investigation-type/24/heritage-management

description: This Section 106 coordination memo describes the installation of external handrails on Building 100 at Randolph Air Force Base, San Antonio, Texas. Section 106 coordination with the Texas SHPO is attached. It has been determined that this undertaking will have "no adverse effect" on the property and this letter provides summary documentation for review.
Design and fabrication of advanced Materials obtained from hemp Fibers and sustainable polymers
Creators: name: Viscusi, Gianluca
Publisher: name: Universita degli studi di Salerno
Year: 2022
Subjects: subject: CHIM/07 FONDAMENTI CHIMICI DELLE TECNOLOGIE
subject: Hemp
subject: Biocomposite
subject: Polymers

description: 2020 - 2021
description: Nowadays, in the frame of sustainability and circular economy, scientific community is focusing on eco- friendly novel materials as valuable alternative of petroleum-based ones. Since the urge of investigating the fabrication of more sustainable materials as well as of addressing their wide demand in different applications, some natural materials such as hemp fibers are taking a central stage since they are biodegradable, no toxic, non-carcinogenic, recyclable. Compared to synthetic fibers (i.e. glass fibers), natural fibers, such as hemp ones, possess some interesting properties such as low density, eco-friendliness and biodegradability. Moreover, due to their intrinsic drawbacks (i.e. low biological resistance, high flammability, low adhesion properties and high moisture sensitivity), several procedures for modifying hemp fibers have been proposed in the scientific literature. Most of them appeared to be no completely sustainable since the use of toxic solvents or harsh processing conditions. By stating that, this thesis will offer a wide analysis of potential applications of hemp fibers in many industrial fields. The novelty is placed in the design of sustainable modification methodologies aiming to efficiently modify the surface properties of hemp fibers making them a valuable material for the fabrication of eco-friendly materials. So, different modification methodologies will be presented and discussed while the properties of modified hemp fibers will be investigated through spectroscopic, morphological, thermal, mechanical, optical, barrier and magnetic properties analysis. [edited by Author]
What determines the diatom communities of submerged freshwater plants? Implications for the use of community indices in determining ecological quality
Creators: name: Fisher, Jane
name: James, Cassandra
name: Moss, Brian
Publisher: name: La Trobe
Year: 2023

description: Murray-Darling Freshwater Research Centre

MDFRC item.

The European Water Framework Directive requires establishment of a typology of aquatic habitats, the determination of ecological quality in each type and the use of composition and abundance of flora in doing this. Experienced phycologists are often able to relate species or genera of diatoms to particular environmental conditions but there is a need to formalise this into mechanistic indices which, if they are to be used in statutory ways to define ecological quality, must have high reliability. Features of the epiphytic diatom communities on five freshwater macrophytes have been related to environmental factors reflecting morphometry, major ion (base) status, and nutrient status in statistically similar subsets of 13-19 lakes from a series of 46 relatively fertile shallow Polish and UK lakes. Principal components and redundancy analyses showed that functional groupings of the diatoms were more successfully related to environmental factors than taxonomic features but that even then only a small part of the variation was explained by the environmental drivers. More than half of the variance was attributable to other, likely biotic, features.Use of the diatom flora in determining ecological status must therefore employ very general features of the community. The discrepancy between perception of indicator species by experienced phycologists but not by multivariate statistics lies first in the fact that such indicators are usually of gross base status (and relevant more to typology) rather than to subtleties of fertility that may reflect ecological quality and secondly because a more complex set of algorithms is used by the human brain than yet available in mechanistic indices.
Centrality dependent Levy-HBT at PHENIX
Creators: name: Lokos, Sandor
Publisher: name: Zenodo
Year: 2024
Subjects: newtrends24
phenix
hbt
levy
correlations
bose-einstein
femtoscopy
centrality
au+au
pion

description: Talk presented at the New Trends in High Energy and Low-x Physics 2024 conference
Apprenticeship in the Public Relations Industry as Part of the Analysis of Ethical Standards
Creators: name: Tworzydło, Dariusz
Publisher: name: figshare
Year: 2022
Subjects: subject: 200104 Media Studies
subject: FOS: Media and communications

description: In the public relations industry, there are mainly people with a higher level of education, although the type of completed studies and preparation for the profession plays an important role in achieving specifi c goals in professional work, with particular emphasis on the ethical dimension of PR practice. Scientifi c objective: Selecting variables related to learning the profession in the PR industry and analyzing their impact on the level of identifi cation of professionalism and ethics in the PR profession, together with an indication of possible reasons for noncompliance with ethical standards in the industry. Research methods: Quantitative research using telephone surveying technique (CATI) among people employed in the public relations industry (sample of 500 PR specialists) and desk research analysis taking into account the results of several research projects regarding the professional performance of PR duties. Results and conclusions: On average, every third person employed in the public relations industry has completed university studies that were not associated with this specialization, i.e. they did not provide the knowledge needed to perform daily professional duties. On the other hand, views consistent with professional ethics are most emphasized by people who have had a long contact with the PR education system, i.e. completed university and post-graduate studies related to PR. The accuracy of the information provided is a key standard that respondents consider when performing their work. Cognitive value: The presented results include a non-standard approach to analyzing the level of education of representatives of the PR industry, which allows more complete knowledge and characteristics of the paths that PR professionals had to follow, along with the distinction between ethical values that guide individual groups.
Geometric properties of domains related to $μ$-synthesis
Creators: name: Zapalowski, Pawel
Publisher: name: arXiv
Year: 2014
Subjects: subject: Complex Variables (math.CV)
subject: FOS: Mathematics
subject: 32F45, 32F17, 32A07

description: In the paper we study the geometric properties of a large family of domains, called the generalized tetrablocks, related to the $μ$-synthesis, containing both the family of the symmetrized polydiscs and the family of the $μ_{1,n}$-quotients $\mathbb E_n$, $n\geq2$, introduced recently by G. Bharali. It is proved that the generalized tetrablock cannot be exhausted by domains biholomorphic to convex ones. Moreover, it is shown that the Carathéodory distance and the Lempert function are not equal on a large subfamily of the generalized tetrablocks, containing i.a. $\mathbb E_n$, $n\geq4$. We also derive a number of geometric properties of the generalized tetrablocks as well as the $μ_{1,n}$-quotients. As a by-product, we get that the pentablock, another domain related to the $μ$-synthesis problem introduced recently by J. Agler, Z. A. Lykova, and N. J. Young, cannot be exhausted by domains biholomorphic to convex ones.
description: 13 pages
Data transmission in long-range dielectric-loaded surface plasmon polariton waveguides
Creators: name: Kharitonov, Svyatoslav
name: Kiselev, Roman
name: Ruiz, Ivan Fernandez de Jauregui
name: Kumar, Ashwani
name: Shi, Xueliang
name: Leosson, Kristjan
name: Pertsch, Thomas
name: Bozhevolnyi, Sergey
name: Nolte, Stefan
name: Chipouline, Arkadi
Publisher: name: arXiv
Year: 2014
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: In this paper we report successful transmission of 10 Gbit/s on-off-keying (OOK) modulated signal through the LR-DLSPPWs with almost negligible degradation of the data flow consistency
Response from Stan Graves to John Brenneman, Running Track, Arthur MacArthur Field, Fort Sam Houston, Texas
Creators: name: Graves, Stanley O.
Publisher: name: Texas Historical Commission
Year: 1994
Subjects: subject: JBSA-Sam Houston
valueUri: https://core.tdar.org/browse/geographic-keyword/82532/jbsa-sam-houston
subject: San Antonio
valueUri: https://core.tdar.org/browse/geographic-keyword/4149/san-antonio
subject: Bexar (County)
valueUri: https://core.tdar.org/browse/geographic-keyword/4150/bexar-county
subject: Texas
valueUri: https://core.tdar.org/browse/geographic-keyword/6923/texas
subject: Fort Sam Houston Conservation District
valueUri: https://core.tdar.org/browse/geographic-keyword/82956/fort-sam-houston-conservation-district
subject: Historic
valueUri: https://core.tdar.org/browse/culture-keyword/25/historic
subject: Running Track
valueUri: https://core.tdar.org/browse/other-keyword/156834/running-track
subject: Arthur MacArthur Field
valueUri: https://core.tdar.org/browse/other-keyword/156824/arthur-macarthur-field
subject: Architectural Documentation
valueUri: https://core.tdar.org/browse/investigation-type/16/architectural-documentation
subject: Heritage Management
valueUri: https://core.tdar.org/browse/investigation-type/24/heritage-management

description: The Environmental and Natural Resources Branch at Fort Sam Houston forwarded to the Texas Historical Commission an information package on the construction of the MacArthur Field running track. The Commission concurs with the determination of "no adverse effect" in accordance with Section 106 guidelines. Copied to this correspondence is Mike Hilger, Preservation Architect, Fort Sam Houston.
Dusty circumstellar environment modeling around R Scl observed with VLTI/MATISSE
Creators: name: Drevon, Julien
Publisher: name: Zenodo
Year: 2020

description: Carbon-rich dust is known to form in the circumstellar environmement of R Scl. The probing of such a process is crucial to understand the enrichment in heavy elements of the galactic interstellar medium. Using the spectro-interferometric measurements of the VLTI/MATISSE instrument, we managed to locate the seeds of dust formation around this bright AGB star. Indeed, the angular resolution of the ESO/VLTI in the spectral bands of MATISSE allows to scan its close stellar environment. Using the DUSTY code we give the main physico-chemical and geometrical key-parameters of the dust shell in agreement with the spectral distributions of both the ISO flux at high resolution in the mid-infrared and the MATISSE visibility in the LM and N bands. In order to better reproduce the 3.2µm features revealed in the object spectra, we used an analytical simple model resolving the radiative transfer equation that allows us to estimate the physical properties of the molecular layer.
Globular Cluster Systems and their Host Galaxies: Comparison of Spatial Distributions and Colors
Creators: name: Hargis, Jonathan R.
name: Rhode, Katherine L.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present a study of the spatial and color distributions of four early-type galaxies and their globular cluster (GC) systems observed as part of our ongoing wide-field imaging survey. We use $BVR$ KPNO-4m+MOSAIC imaging data to characterize the galaxies' GC populations, perform surface photometry of the galaxies, and compare the projected two-dimensional shape of the host galaxy light to that of the GC population. The GC systems of the ellipticals NGC 4406 and NGC 5813 both show an elliptical distribution consistent with that of the host galaxy light. Our analysis suggests a similar result for the giant elliptical NGC 4472, but a smaller GC candidate sample precludes a definite conclusion. For the S0 galaxy NGC 4594, the GCs have a circular projected distribution, in contrast to the host galaxy light which is flattened in the inner regions. For NGC 4406 and NGC 5813 we also examine the projected shapes of the metal-poor and metal-rich GC subpopulations and find that both subpopulations have elliptical shapes that are consistent with those of the host galaxy light. Lastly, we use integrated colors and color profiles to compare the stellar populations of the galaxies to their GC systems. For each galaxy, we explore the possibility of color gradients in the individual metal-rich and metal-poor GC subpopulations. We find statistically significant color gradients in both GC subpopulations of NGC 4594 over the inner $\sim 5$ effective radii ($\sim 20$ kpc). We compare our results to scenarios for the formation and evolution of giant galaxies and their GC systems.
description: 27 pages, 27 figures, 6 tables; accepted for publication in The Astrophysical Journal
Thermal infrared imaging with LBTI's LMIRCAM and NOMIC
Creators: name: Ertel, Steve
Publisher: name: Zenodo
Year: 2020

description: The Large Binocular Telescope Interferometer (LBTI) is a NASA-funded instrument of the LBT designed for high-sensitivity, high-contrast, and high-resolution infrared (1.5-13 ?m) imaging. To carry out a wide range of high-spatial resolution observations, it can combine the two AO-corrected 8.4-m apertures of the LBT in various ways including direct (non-interferometric) imaging, coronagraphy (APP and AGPM), Fizeau imaging, non-redundant aperture masking, and nulling interferometry. It also has broadband, narrowband, and spectrally dispersed capabilities. In this talk, I review the current performance of the system that includes a near-infrared phasing camera, a 1-5 ?m camera (called LMIRCam), and an 8-13 ?m camera (called NOMIC). Then, I present the results of its two key surveys on nearby young exoplanets (LEECH) and exozodiacal disks (HOSTS). I end this talk by presenting several instrumental upgrades that are currently underway to improve and expand the capabilities.
Will rising salinity in the Murray-Darling basin affect common carp (Cyprinus carpio L.)?
Creators: name: Whiterod, Nick
name: Walker, Keith F
Publisher: name: La Trobe
Year: 2023

description: La Trobe University Faculty of Science, Technology and Engineering Murray Darling Freshwater Research Centre

MDFRC item.

Salinisation in the Murray-Darling Basin, Australia, may affect aquatic flora and fauna, including the common carp, an alien species that has become the most common fish in the river system. This study describes the responses of juvenile carp (31-108 mm total length) to salinity levels that prevail in some wetlands of the lower reaches of the River Murray. Carp are moderately tolerant of salinity (direct transfer LC50: 11 715 mg L-1), particularly after slow acclimation (LC50: 13 070mgL-1), but sub-lethal effects are evident at lower salinities. These include effects on osmoregulation ( > 7500 mg L-1), behaviour (7500-12 500 mgL-1) and sperm motility in mature fish (150-300 mm) (8330 mgL-1). Salinities in some Murray-Darling Basin wetlands already approach half seawater (17 500 mgL-1) and carp populations in these important nursery areas could be impacted through sub-lethal effects on adults and lethal effects on juveniles, eggs and sperm.