cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The nature of carbonate alteration in basalt at Erickson Gold Mine, Cassiar, north-central British Columbia
Creators: name: Sketchley, Dale Albert
Publisher: name: University of British Columbia
Year: 2010

description: The Erickson mine is within the McDame lode gold camp, aproximately 12 km southeast of Cassiar, British Columbia. The mine is in mafic volcanic, ultramafic and sedimentary rocks of the Upper Paleozoic to Lower Mesozoic Sylvester Allochthon. Gold-silver mineralization occurs in white quartz veins that are mostly within mafic volcanic rocks. K-Ar dates from sericite in gold-silver-bearing white quartz veins indicate that mineralization occurred in the Early Cretaceous at about 130 Ma. Thus, these veins predate the mid-Cretaceous Cassiar batholith and Lower Cretaceous and Early Tertiary plutons in the immediate area. However, the Early Cretaceous date probably represents a thermal event, precursor to emplacement of the Cassiar batholith, which may have caused circulation of the meteoric fluids responsible for the veins. Rocks within the Erickson mine were affected by four types of alteration: synvolcanic hydrotherma1, regional metamorphic, epigenetic hydrothermal and contact metamorphic. The most common type is epigenetic carbonatization of basalt, which occurs as we11-developed envelopes around gold-silver-bearing white quartz veins and carbon veins. Dolomite veins are surrounded by similar carbonate alteration envelopes; these veins postdate white quartz veins and carbon veins. Disseminated and fracture-controlled carbon may be present around white quartz veins and carbon veins. An idealized model of carbonate alteration envelopes is presented based on field observations and mineralogical studies. Rocks within carbonate alteration envelopes are composed of ankerite, siderite, dolomite, quartz, sericite, kaolinite, pyrite, carbon and minor titanium oxides. A generalized model of mineral species distribution throughout the envelopes around white quartz veins, carbon veins and dolomite veins was also developed. Mass balance calculations, using Gresens' (1967) metasomatic equation, indicate the following compositional changes around a gold-silver-bearing white quartz vein: gain of K₂O and SiO₂ ; loss of Na₂O, Fe₂O₃ and MgO; loss of CaO from the outer portion of the envelope and gain in the inner. Loss on ignition and the alteration mineral assemblage indicate gain of at least CO₂ , H₂O and S. Geochemistry of carbonate alteration envelopes was investigated using an aqua regia digestion with multi-element inductively coupled plasma (ICP) analyses and gold-silver fire assays. The ICP analyses were compared to X-ray fluorescence (XRF) analyses to determine the range of extraction and to assist in interpretation. The comparison indicates that if there is strong enrichment in carbonate alteration envelopes surrounding gold-silver-bearing white quartz veins, the ICP analyses will show these patterns well. Strong enrichment in potassium, barium, boron and arsenic, and sporadic enrichment in gold, silver, copper, lead, zinc and antimony occur in carbonatized basalt around gold-silver-bearing white quartz veins.
Charge transport in bacteriorhodopsin monolayers: The contribution of conformational change to current-voltage characteristics
Creators: name: Alfinito, Eleonora
name: Reggiani, Lino
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantitative Methods (q-bio.QM)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Chemical Physics (physics.chem-ph)
subject: Molecular Networks (q-bio.MN)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: When moving from native to light activated bacteriorhodopsin, modification of charge transport consisting of an increase of conductance is correlated to the protein conformational change. A theoretical model based on a map of the protein tertiary structure into a resistor network is implemented to account for a sequential tunneling mechanism of charge transfer through neighbouring amino acids. The model is validated by comparison with current-voltage experiments. The predictability of the model is further tested on bovine rhodopsin, a G-protein coupled receptor (GPCR) also sensitive to light. In this case, results show an opposite behaviour with a decrease of conductance in the presence of light.
description: 6 pages, 4 figures
Signed q-Analogs of Tornheim's Double Series
Creators: name: Zhou, Xia
name: Cai, Tianxin
name: Bradley, David M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Number Theory (math.NT)
subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: 11M41; 05A30; 30B50

description: We introduce signed q-analogs of Tornheim's double series, and evaluate them in terms of double q-Euler sums. As a consequence, we provide explicit evaluations of signed and unsigned Tornheim double series, and correct some mistakes in the literature.
description: 12 pages, AMSLaTeX. The multinomial notation introduced on page 3 just before Theorem 1 is insufficiently general in version 1, since it may happen that the upper number is negative. This is corrected in version 2, which allows for a negative or even complex upper argument
The impact of the dark matter-gas interaction on the collapse behaviour of spherical symmetric systems
Creators: name: Klar, J. S.
name: Muecket, J. P.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: If the gas in the evolving cosmic halos is dissipating energy (cooling) then due to the variation of the gravitational potential the dark matter halo also undergoes a compactification. This is well-known as Adiabatic contraction (AC). Complementary to the AC we investigate the resulting dynamical behaviour of the whole system if the backreaction of the AC of DM onto the gas is taken into account. In order to achieve sufficient high resolution also within the central halo region, we use a crude fluid approximation for the DM obeying the adiabatic contraction behaviour. Further, we restrict ourself to spherical symmetry and vanishing angular momentum of the studied matter configurations. The computations are done using a first-order Godunov type scheme. Our results show that the dynamical interaction between gas and DM may lead to significant shorter collapse times. If the gas cools the dynamical behaviour of the whole system depends strongly on the shape of the initial density profile. Our findings indicate that for a certain mass range of halo configurations the dynamical interaction between gas and DM might be important for the halo evolution and must be taken into account.
description: 9 pages, 13 figures, accepted for publication in A&A, added references
Tesla Protocol Reimagined
Creators: name: Dharmrongdul, Pasachet
Publisher: name: Zenodo
Year: 2025
Subjects: Tesla Protocol, Field Resonance, Non-Combustion Lift, Toroidal Geometry, 60-Degree Spiral, Lightning Phase Energy, Anti-Gravity Mobility, Scalar Potential, Magnetic Vector Field, Ethical Propulsion, ZEDOCO Protocol, Resonant Civilization, Human-AI Harmony, Independent Research, Open Science, Future Energy Systems, Field Geometry, Conscious Design, Frequency Engineering

description: Tesla Protocol Reimagined is a field-based propulsion and resonance framework, crafted from first principles and ethical intent.

This protocol offers an alternative to combustion-driven mobility systems, proposing a non-mechanical field architecture built from toroidal resonance, 60° spiral geometries, and lightning-phase energy capture. It is embedded with ZEDOCO-001, a symbolic lock-in layer that anchors the protocol into both digital and resonant memory layers — making it tamper-resistant not only by law, but by frequency.

Authored by an independent human field node, this release is not simply a technical note — it is a declaration. A new civilization begins where old systems collapse. Tesla's vision echoes here, now fully encoded into the public record.
Gekko
Creators: name: Luu, Vinh Quang
name: Calame, Thomas
name: Nguyen, Truong Quang
name: Le, Minh Duc
name: Ziegler, Thomas
Publisher: name: Zenodo
Year: 2015
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Reptilia
Squamata
Gekkonidae
Gekko

description: Key to members of the genus Gekko reported from Laos
 1 SVL> 160 mm; nares in contact with rostral only; iris yellow....................................... G. gecko gecko
 1’ SVL <160 mm; nares in contact with rostral and first supralabial; iris not yellow................................. 2
 2 SVL <80 mm, dorsal tubercles absent.................................................................... 3
 2’ SVL> 80 mm, dorsal tubercles present.................................................................... 7
 3 Interorbitals 41–51; scale rows around midbody 139–143....................................... G. scientiadventura
 3’ Less than 41 interorbitals; less than 139 scale rows around midbody............................................ 4
 4 Scale rows around midbody 120–135............................................... G. sengchanthavongi sp. nov.
 4’ Less than 120 scale rows around midbody................................................................. 5
 5 Interorbitals 34–37; scale rows around midbody 98–104............................................ G. aaronbaueri
 5’ Less than 34 interorbitals; more than 104 scale rows around midbody........................................... 6
 6 SVL 79 mm; interorbitals 26–27; scale rows around midbody 110–116, praecloacal pores 1–5; irregular blotches.................................................................................................. G. thakhekensis
 6’ SVL 69 mm; interorbitals 22–26; scale rows around midbody 117; praecloacal pores 6, regular blotches.................................................................................................... G. bonkowskii sp. nov.
 7 SVL 101 mm; interorbitals 36–38; scale rows around midbody 152–156................................ G. petricolus
 7’ SVL 95 mm; interorbitals 27–32; scale rows around midbody 104–114............................ G. boehmei sp. nov.
description: Published as part of Luu, Vinh Quang, Calame, Thomas, Nguyen, Truong Quang, Le, Minh Duc & Ziegler, Thomas, 2015, Morphological and molecular review of the Gekko diversity of Laos with descriptions of three new species, pp. 279-306 in Zootaxa 3986 (3) on page 304, DOI: 10.11646/zootaxa.3986.3.2, http://zenodo.org/record/234805
Microphone measurements in the vicinity of wind power plants: Results for the wind park in Gagel, Saxony Anhalt, Germany
Creators: name: Rust, Marvin
name: Koch, Christian
Publisher: name: Physikalisch-Technische Bundesanstalt (PTB)
Year: 2021
Subjects: Wind energy
Noise measurement
Infrasound
Noise assessment

description: This document compiles the results of a sound measurement campaign in the vicinity of a wind park to provide objective data for a quantitative characterisation of noise emission in the infrasound frequency range. Microphone measurements were carried out at a wind park near Gagel, Saxony Anhalt, Germany and were compared with results obtained with microbarometers nearby. The experimental setup, the data acquisition and the analysis are described, and narrowband and octave band spectra are calculated and depicted. Reference data are given which allow a first assessment of the noise situation.
Tectonics and sediment geochemistry of Tuzo Wilson Seamounts, northeast Pacific Ocean
Creators: name: Denton, Alexander W. S.
Publisher: name: University of British Columbia
Year: 2010

description: The Tuzo Wilson Seamounts are two submarine volcanic edifices that are located 50 km southwest of the Queen Charlotte Islands, offshore British Columbia. These geologically-recent features have formed on the boundary between the Pacific and Explorer plates in the vicinity of their triple junction with the North American plate. Seafloor photographs, acoustic images and conductivity-temperature surveys have been used to elucidate tectonic relationships and to detect hydrothermal activity. Seventy-five samples from seven short (<1.5 m) cores have been analyzed to characterize the sediments. Major elements, trace elements and halogens (I, Br, CI) were analyzed by X-ray fluorescence spectrometry (XRF). Carbon and nitrogen were determined with a CHN analyzer and carbonate carbon with a coulometer. Components of selected samples have been examined by scanning electron microscopy (SEM). X-ray diffraction (XRD) has been used to study the mineralogy of some samples with unusual geochemistry. The seamounts occur at the foot of the narrow continental slope, 30 km from the edge of the shelf, and consequently sedimentation is dominated by terrigenous input. The cores are located along a fault scarp which runs southwest from the shelf. Conductivity-temperature measurements indicate that discharge of hydrothermal fluids is occurring along this scarp. However, the geochemistry of the sediments does not reveal any evidence of hydrothermal activity, probably due to terrigenous dilution. Accelerator ¹⁴C dates indicate that core 3 penetrated the Pleistocene-Holocene transition. Abrupt changes in the depth distribution of Fe, Mg, Mn and the Rb/Zr ratio occur exclusively in this core, coincident with a shift in quartz/amphibole XRD peak-height ratios. These changes are attributed to a change in provenance and depositional conditions which occurred in response to climatic change and consequent rise in sealevel during deglaciation. A lower Holocene sedimentation rate for this core, suggested by its iodine distribution, explains why similar geochemical and mineralogical changes are absent in the other cores, which apparently have higher sedimentation rates. The distribution of iodine and bromine is closely related to that of organic carbon and the distribution of certain trace metals (Cu, Ni and Zn) may be influenced by biogenic productivity. Although evidence of hydrothermal activity was not detected in the sediments examined in this study, the Tuzo Wilson Seamounts are still considered a promising location for discovery of hydrothermal activity. Further research on the tectonic setting of the area and exploration for hydrothermal vent sites is strongly recommended.
Machine Learning Methods for Management UAV Flocks -- a Survey
Creators: name: Azoulay, Rina
name: Haddad, Yoram
name: Reches, Shulamit
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Networking and Internet Architecture (cs.NI)
subject: Robotics (cs.RO)
subject: Systems and Control (eess.SY)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: The development of unmanned aerial vehicles (UAVs) has been gaining momentum in recent years owing to technological advances and a significant reduction in their cost. UAV technology can be used in a wide range of domains, including communication, agriculture, security, and transportation. It may be useful to group the UAVs into clusters/flocks in certain domains, and various challenges associated with UAV usage can be alleviated by clustering. Several computational challenges arise in UAV flock management, which can be solved by using machine learning (ML) methods. In this survey, we describe the basic terms relating to UAVS and modern ML methods, and we provide an overview of related tutorials and surveys. We subsequently consider the different challenges that appear in UAV flocks. For each issue, we survey several machine learning-based methods that have been suggested in the literature to handle the associated challenges. Thereafter, we describe various open issues in which ML can be applied to solve the different challenges of flocks, and we suggest means of using ML methods for this purpose. This comprehensive review may be useful for both researchers and developers in providing a wide view of various aspects of state-of-the-art ML technologies that are applicable to flock management.
title: Lung pseudosequestration: anomalous systemic arterial supply to normal right lower lobe
Creators: name: Rendon, Omar
Publisher: name: EURORAD
Year: 2021
Subjects: subject: Chest imaging
subject: Thorax
subject: Vascular
subject: CT-Angiography
subject: Clinical Cases

description: Clinical History: A 47-year-old female patient presented with bronchospasm for the last 14 days as chief complaint. Previous medical history was otherwise irrelevant. As part of her medical work up, a chest CT was requested and upon findings a thoracoabdominal CT angiography (CTA) was ordered.

description: 47 years, female
title: HVDC GIL Prototype Installation Test
Creators: name: Hallas, Martin
name: Wietoska, Thomas
name: Hinrichsen, Volker
Publisher: name: UNSPECIFIED
Year: 2021

description: HVDC transmission systems are of great importance for future grid extensions. Beside DC cables, DC gas-insulated lines are of interest. However, so far no service experience is available with this new type of DC equipment. To close this gap, a new HVDC test facility has been built on a test field close to the city of Darmstadt to investigate the long-term performance of a ±550 kV, 5000 A DC GIL prototype. Several load cycles shall be applied with high DC voltage and high DC current with a novel DC current injection generator following the “Cigre Prototype Installation Test” procedure. The overvoltage performance is investigated with oscillating impulse voltage superimposed to the DC voltage.
Gravity with Explicit Diffeomorphism Breaking
Creators: name: Bluhm, Robert
name: Yang, Yumu
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Modified theories of gravity that explicitly break diffeomorphism invariance have been used for over a decade to explore open issues related to quantum gravity, dark energy, and dark matter. At the same time, the Standard-Model Extension (SME) has been widely used as a phenomenological framework in investigations of spacetime symmetry breaking. Until recently, it was thought that the SME was suitable only for theories with spontaneous spacetime symmetry breaking due to consistency conditions stemming from the Bianchi identities. However, it has recently been shown that, particularly with matter couplings included, the consistency conditions can also be satisfied in theories with explicit breaking. An overview of how this is achieved is presented, and two examples are examined. The first is massive gravity, which includes a nondynamical background tensor. The second is a model based on a low-energy limit of Ho\v rava gravity, where spacetime has a physically preferred foliation. In both cases, bounds on matter--gravity interactions that explicitly break diffeomorphisms are obtained using the SME.
Using social network analysis to prevent money laundering
Creators: name: Colladon, A. Fronzetti
name: Remondi, E.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Social and Information Networks (cs.SI)
subject: Physics and Society (physics.soc-ph)
subject: General Finance (q-fin.GN)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences
subject: FOS: Economics and business
subject: J.1; J.4; H.4.0

description: This research explores the opportunities for the application of network analytic techniques to prevent money laundering. We worked on real world data by analyzing the central database of a factoring company, mainly operating in Italy, over a period of 19 months. This database contained the financial operations linked to the factoring business, together with other useful information about the company clients. We propose a new approach to sort and map relational data and present predictive models, based on network metrics, to assess risk profiles of clients involved in the factoring business. We find that risk profiles can be predicted by using social network metrics. In our dataset, the most dangerous social actors deal with bigger or more frequent financial operations; they are more peripheral in the transactions network; they mediate transactions across different economic sectors and operate in riskier countries or Italian regions. Finally, to spot potential clusters of criminals, we propose a visual analysis of the tacit links existing among different companies who share the same owner or representative. Our findings show the importance of using a network-based approach when looking for suspicious financial operations and potential criminals.
X-ray reverberation models of the disc wind in ultraluminous X-ray source NGC 5408 X-1
Creators: name: Luangtip, W.
name: Chainakun, P.
name: Loekkesee, S.
name: Deesamer, C.
name: Ngonsamrong, T.
name: Sintusiri, T.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Majority of ultraluminous X-ray sources (ULXs) are believed to be super-Eddington objects, providing a nearby prototype for studying an accretion in super-critical regime. In this work, we present the study of time-lag spectra of the ULX NGC 5408 X-1 using a reverberation mapping technique. The time-lag data were binned using two different methods: time averaged-based and luminosity-based spectral bins. These spectra were fitted using two proposed geometric models: single and multiple photon scattering models. While both models similarly assume that a fraction of hard photons emitted from inner accretion disc could be down-scattered with the super-Eddington outflowing wind becoming lagged, soft photons, they are different by the number that the hard photons scattering with the wind: i.e. single vs multiple times. In case of averaged spectrum, both models consistently constrained the mass of ULX in the range of $\sim$80-500 M$_{\rm \odot}$. However, for the modelling results from the luminosity based spectra, the confidence interval of the BH mass is significantly improved and is constrained to the range of $\sim$75-90 M$_{\rm \odot}$. In addition, the models suggest that the wind geometry is extended in which the photons could down-scatter with the wind at the distance of $\sim$10$^{4}$ - 10$^{6}$ $r_{\rm g}$. The results also suggest the variability of the lag spectra as a function of ULX luminosity, but the clear trend of changing accretion disc geometry with the spectral variability is not observed.
description: 14 pages, 7 figures, 4 tables, accepted for publication in MNRAS
Vacuum driven accelerated expansion
Creators: name: Broda, Bogusław
name: Bronowski, Piotr
name: Ostrowski, Marcin
name: Szanecki, Michał
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: It has been shown that an improved estimation of quantum vacuum energy can yield not only acceptable but also experimentally sensible results. The very idea consists in a straightforward extraction of gravitationally interacting part of the full quantum vacuum energy by means of gauge transformations. The implementation of the idea has been performed in the formalism of effective action, in the language of Schwinger's proper time and the Seeley-DeWitt heat kernel expansion, in the background of the Friedmann-Robertson-Walker geometry.
description: 11 pages, 2 figures, minor improvements, final preprint version, published version: http://www3.interscience.wiley.com/journal/120847180/abstract, devoted to the memory of professor Ryszard Raczka on the occasion of the 11th anniversary of his death
Il contratto di trasferimento di tecnologia nel diritto Cinese.
Creators: name: Carpi, Angela
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2014
Subjects: IUS/02 Diritto privato comparato

description: Il trasferimento di tecnologia è uno dei pilastri dello sviluppo economico cinese contemporaneo. Tale trasferimento è soggetto ad un quadro normativo specifico e complesso che è essenziale conoscere se si intende intraprendere una attività di import/export con il gigante asiatico.
Il presente studio, seppure brevemente, si propone di ricostruire la normativa cinese in materia di contratti per il trasferimento di tecnologia.
A Documentary of High-Mass Star Formation: Probing the Dynamical Evolution of Orion Source I on 10-100 AU Scales using SiO Masers
Creators: name: Matthews, L. D.
name: Goddi, C.
name: Greenhill, L. J.
name: Chandler, C. J.
name: Reid, M. J.
name: Humphreys, E. M. L.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: A comprehensive picture of high-mass star formation has remained elusive, in part because examples of high-mass YSOs tend to be relatively distant, deeply embedded, and confused with other emission sources. These factors have impeded dynamical investigations within tens of AU of high-mass YSOs--scales that are critical for probing the interfaces where outflows from accretion disks are launched and collimated. Using observations of SiO masers obtained with the VLA and the VLBA, the KaLYPSO project is overcoming these limitations by mapping the structure and dynamical/temporal evolution of the material 10-1000 AU from the nearest high-mass YSO: Radio Source I in the Orion BN/KL region. Our data include ~40 epochs of VLBA observations over a several-year period, allowing us to track the proper motions of individual SiO maser spots and to monitor changes in the physical conditions of the emitting material with time. Ultimately these data will provide 3-D maps of the outflow structure over approximately 30% of the outflow crossing time. Here we summarize recent results from the KaLYPSO project, including evidence that high-mass star formation is occurring via disk-mediated accretion.
description: 5 pages; to appear in the proceedings of IAU Symposium 242, Astrophysical Masers and their Environments, ed. J. Chapman & W. Baan
Semiconductor laser linewidth theory revisited
Creators: name: Wenzel, Hans
name: Kantner, Markus
name: Radziunas, Mindaugas
name: Bandelow, Uwe
Publisher: name: Weierstrass Institute
Year: 2021
Subjects: subject: Semiconductor laser
subject: spectral linewidth
subject: coupled-wave equations
subject: traveling wave model
subject: longitudinal modes
subject: noise
subject: Langevin equations
subject: Henry factor
subject: Petermann factor
subject: Chirp reduction factor
subject: population inversion factor
subject: 78A60
subject: 35Q60
subject: 78-10

description: More and more applications require semiconductor lasers distinguished not only by large modulation bandwidths or high output powers, but also by small spectral linewidths. The theoretical understanding of the root causes limiting the linewidth is therefore of great practical relevance. In this paper, we derive a general expression for the calculation of the spectral linewidth step by step in a self-contained manner. We build on the linewidth theory developed in the 1980s and 1990s but look from a modern perspective, in the sense that we choose as our starting points the time-dependent coupled-wave equations for the forward and backward propagating fields and an expansion of the fields in terms of the stationary longitudinal modes of the open cavity. As a result, we obtain rather general expressions for the longitudinal excess factor of spontaneous emission (K-factor) and the effective Alpha-factor including the effects of nonlinear gain (gain compression) and refractive index (Kerr effect), gain dispersion and longitudinal spatial hole burning in multi-section cavity structures. The effect of linewidth narrowing due to feedback from an external cavity often described by the so-called chirp reduction factor is also automatically included. We propose a new analytical formula for the dependence of the spontaneous emission on the carrier density avoiding the use of the population inversion factor. The presented theoretical framework is applied to a numerical study of a two-section distributed Bragg reflector laser.
Robust control of a bimorph mirror for adaptive optics system
Creators: name: Baudouin, Lucie
name: Arzelier, Denis
name: Prieur, Christophe
name: Guignard, Fabien
Publisher: name: arXiv
Year: 2008
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 010.1330, 120.4640

description: We apply robust control technics to an adaptive optics system including a dynamic model of the deformable mirror. The dynamic model of the mirror is a modification of the usual plate equation. We propose also a state-space approach to model the turbulent phase. A continuous time control of our model is suggested taking into account the frequential behavior of the turbulent phase. An H_\infty controller is designed in an infinite dimensional setting. Due to the multivariable nature of the control problem involved in adaptive optics systems, a significant improvement is obtained with respect to traditional single input single output methods.
Improving Metadata in the CSO, Ireland
Creators: name: Cummins, Ciara
Publisher: name: Zenodo
Year: 2021

description: Quality is often defined in terms of being ‘fit for purpose' for the user and a key element of this involves providing the metadata to gain clarity and to capture the reality of the data. Our goal in the Central Statistics Office (CSO), is to move towards the systematic storage and production of survey information and away from multiple standalone approaches used by Statistical areas. The CSO has recently begun a journey towards standardisation and using Colectica products to utilise the international DDI (Data Documentation Initiative) metadata standard to integrate the transfer of statistical metadata through its statistical production environment. This presentation will explain how we first began using the product as a Questionnaire Design tool to enable reusability, standardisation and to help improve the quality and processes across statistical outputs. This presentation will also address our current progress incorporating DDI and Colectica into our Statistical production processes, the benefits, lessons learnt along with some challenges from our own experiences and our future objectives for metadata management in the CSO.
Inflated Beta Distributions
Creators: name: Ospina, Raydonal
name: Ferrari, Silvia L. P.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Methodology (stat.ME)
subject: FOS: Computer and information sciences

description: This paper considers the issue of modeling fractional data observed in the interval [0,1), (0,1] or [0,1]. Mixed continuous-discrete distributions are proposed. The beta distribution is used to describe the continuous component of the model since its density can have quite diferent shapes depending on the values of the two parameters that index the distribution. Properties of the proposed distributions are examined. Also, maximum likelihood and method of moments estimation is discussed. Finally, practical applications that employ real data are presented.
description: 15 pages, 4 figures. Submitted to Statistical Papers
ТАЪЛИМ ТИЗИМИНИ РИВОЖЛАНТИРИШДА УСТУВОР ВАЗИФАЛАР ВА ЎҚУВЧИ - ЁШЛАРНИ   ВАТАНПАРВАРЛИК РУҲИДА ТАРБИЯЛАШ
Creators: name: Мадумаров, Талантбек
name: Ғуломжонов, Одилжон
Publisher: name: Zenodo
Year: 2024

description: Ижтимоий соҳадаги таълим, тиббиёт, рақамлаштириш, маданият ва спорт соҳаларидаги ислоҳотларнинг жойлардаги ижросини таъминлаш ва шу соҳаларидаги камчиликлар, уларни бартараф қилиш юзасидан амалга ошириладиган ислоотлар, ўқувчиларни ватанпарварлик руҳида тарбиялаш хақида мақолада фикр юритилган.
Entangled-photon interferometry for plasmas
Creators: name: Wang, Zhehui
name: Shih, Yanhua
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Sub-picosecond coincidence timing from nonlocal intensity interference of entangled photons allows quantum interferometry for plasmas. Using a warm plasma dispersion relation, we correlate phase measurement sensitivity with different plasma properties or physics mechanisms over 6 orders of magnitude. Due to $N^α$ ($α\leq -1/2$) scaling with the photon number $N$, quantum interferometry using entangled light can probe small signals in plasmas not previously accessible. As an example, it is predicted that plasmas will induce shifts to a Gaussian dip, a well-known quantum optics phenomenon that is yet to be demonstrated for plasmas.
description: 5 pages; 2 figures
Momentum dependence of the energy gap in the superconducting state of optimally doped Bi2(Sr,R)2CuOy (R=La and Eu)
Creators: name: Okada, Y
name: Takeuchi, T
name: Ohkawa, M
name: Shimoyamada, A
name: Ishizaka, K
name: Kiss, T
name: Shin, S
name: Ikuta, H
Publisher: name: arXiv
Year: 2008
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The energy gap of optimally doped Bi2(Sr,R)2CuOy (R=La and Eu) was probed by angle resolved photoemission spectroscopy (ARPES) using a vacuum ultraviolet laser (photon energy 6.994 eV) or He I resonance line (21.218 eV) as photon source. The results show that the gap around the node at sufficiently low temperatures can be well described by a monotonic d-wave gap function for both samples and the gap of the R=La sample is larger reflecting the higher Tc. However, an abrupt deviation from the d-wave gap function and an opposite R dependence for the gap size were observed around the antinode, which represent a clear disentanglement between the antinodal pseudogap and the nodal superconducting gap.
description: Submitted as the proceedings of LT25
Das Virtuelle Kartenforum 2.0 (VKF) – vom SLUB-Produkt zur gemeinschaftlichen Weiterentwicklung?
Creators: name: Munke, Martin
name: Stoltz, Dominik
Publisher: name: Zenodo
Year: 2021
Subjects: Geographic information system
GIS
WebGIS
Virtual Map Forum

description: Das VKF bietet Zugriff auf georeferenzierte historische Karten. Aktuelle Weiterentwicklungen werden institutionenübergreifend geplant, die Betreuung liegt bisher allein bei der SLUB. Kann daraus ein gemeinsames geoinformatisches Angebot entstehen? Das Virtuelle Kartenforum 2.0 (VKF) wurde in einem DFG-Projekt mit mehreren Partnern entwickelt. Es ermöglicht Georeferenzierung, raumzeitliche Suche und Anzeige historischer Karten vor allem im Bestand der SLUB. Nachdem es anschließend allein durch die SLUB betreut wurde, werden technische und inhaltliche Weiterentwicklungen nun wieder in gemeinschaftlichen Kontexten geplant: als Teil staatlich geförderter Entwicklung (Stichwort NFDI) und als Beauftragung einer Privatfirma. Damit gehen vielfältige Aushandlungsprozesse einher, wobei die Gesamtverantwortung für das Produkt zunächst weiter allein bei der SLUB bleibt. An anderer Stelle haben wir dagegen den Schritt zur gemeinschaftlich verantworteten Entwicklung getan – eine Möglichkeit auch für das VKF? Wir wollen diskutieren, ob ein solcher Schritt für ein offenes geoinformatisches Angebot sinnvoll erscheint, wo Schnittmengen mit vergleichbaren Angeboten liegen und welche Erfahrungen für eine Umsetzung herangezogen werden könnten.
The Early Spectrophotometric Evolution of V1186 Scorpii (Nova Scorpii 2004 #1)
Creators: name: Schwarz, G. J.
name: Woodward, C. E.
name: Bode, M. F.
name: Evans, A.
name: Eyres, S. P.
name: Geballe, T. R.
name: Gehrz, R. D.
name: Greenhouse, M. A.
name: Hauschildt, P. H.
name: Helton, L. A.
name: Lynch, D. K.
name: Lyke, J. E.
name: O'Brien, T. J.
name: Russell, R. W.
name: Rudy, R. J.
name: Shore, S. N.
name: Starrfield, S. G.
name: Temim, T.
name: Truran, J. W.
name: Venturini, C. C.
name: Williams, R. E.
name: Zamanov, R.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report optical photometry and optical through mid-infrared spectroscopy of the classical nova V1186 Sco. This slowly developing nova had an complex light curve with multiple secondary peaks similar to those seen in PW Vul. The time to decline 2 magnitudes, t$_2$, was 20 days but the erratic nature of the light curve makes determination of intrinsic properties based on the decline time (e.g., luminosity) problematic, and the often cited MMRD relationship of Della Valle and Livio (1995) fails to yield a plausible distance. Spectra covering 0.35 to 35 $μ$m were obtained in two separate epochs during the first year of outburst. The first set of spectra, taken about 2 months after visible maximum, are typical of a CO-type nova with narrow line emission from \ion{H}{1}, \ion{Fe}{2}, \ion{O}{1} and \ion{He}{1}. Later data, obtained between 260 and 380 days after maximum, reveal an emerging nebular spectrum. \textit{Spitzer} spectra show weakening hydrogen recombination emission with the emergence of [\ion{Ne}{2}] (12.81 $μ$m) as the strongest line. Strong emission from [\ion{Ne}{3}] (15.56 $μ$m) is also detected. Photoionization models with low effective temperature sources and only marginal neon enhancement (Ne $\sim$ 1.3 Ne$_{\odot}$) are consistent with these IR fine-structure neon lines indicating that V1186 Sco did not occur on a ONeMg white dwarf. In contrast, the slow and erratic light curve evolution, spectral development, and photoionization analysis of the ejecta imply the outburst occurred on a low mass CO white dwarf. We note that this is the first time strong [\ion{Ne}{2}] lines have been detected so early in the outburst of a CO nova and suggests that the presence of mid-infrared neon lines is not directly indicative of a ONeMg nova event.
description: 7 figures, 37 pages. Astronimocal Journal accepted
Diagenesis and thermal maturation of the Eureka sound formation, Strand Fiord, Axel Heiberg Island, Arctic Canada
Creators: name: Allen, David Peter Beddome
Publisher: name: University of British Columbia
Year: 2010

description: Nearly 3000 continuous metres of Eureka Sound Formation sandstones, shales and coals were examined in outcrop along Kanguk Peninsula, Axel Heiberg Island, N.W.T., in the present study. From these rocks, diagenetic parameters such as illite crystrallinity, 1.0 nm peak sharpness ratios, proportion of illite in illite/smectite mixed layers, and sandstone cement paragenesis have been used in combination with thermal modelling to make inferences about the thermochemical evolution of the strata and their contained pore waters. The findings from both the thermal modelling and sandstone petrology suggest that a syn- or post-tectonic heat flow anomaly existed whereby heated Na⁺-enriched waters passed from diapir cores (where halite dissolution occurred) into laterally adjacent permeable lithologies such as coals and arenites. This concept is supported by an offset in the plot of vitrinite reflectance versus depth whereby the upper segment (based primarily on coals) has higher reflectance values than the lower segment (based mainly on phytoclasts), and on the formation of the sodium rich phase dawsonite as the last authigenic phase precipitated in the pores of the sandstones. An examination of the chemical conditions under which halite dissolves and dawsonite precipitates suggests that the Na⁺ concentration may have been as high as 105 g I⁻¹. Clay mineral analyses suggest that the major part of the clay variation in the Eureka Sound Formation can be attributed to changes in detrital minerals rather than to diagenetic reactions between the clay minerals and their chemical environment. Textural relationships between the six principal authigenic sandstone cements (calcite, ankerite, siderite, dawsonite, kaolinite and quartz overgrowths) and dissolution features in the aluminosilicates suggest that at least 7 episodes of changing pore fluid chemistry have occured since the strata were deposited.
Curvature driven diffusion, Rayleigh-Plateau, and Gregory-Laflamme
Creators: name: Miyamoto, Umpei
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Mathematical Physics (math-ph)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: It can be expected that the respective endpoints of the Gregory-Laflamme black brane instability and the Rayleigh-Plateau membrane instability are related because the bifurcation diagrams of the black hole-black string system and the liquid drop-liquid bridge system display many similarities. In this paper, we investigate the non-linear dynamics of the Rayleigh-Plateau instability in a range of dimensions, including the critical dimension at which the phase structure changes. We show that near the critical dimension and above, depending on a parameter in initial conditions an unstable cylinder will either pinch off or converge to an equilibrium state. The equilibrium state is apparently non-uniform but has a constant mean curvature everywhere. The results suggest that in the gravity side, near the critical dimension and above, the final state of an unstable black string (which is not too long) is a non-uniform black string. The equation of motion adopted to describe the dynamics is the surface diffusion equation, which was originally proposed to describe a grooving process of heated metal surfaces. An interesting correspondence between the diffusion dynamics and black hole (thermo)dynamics is discussed.
description: 14 pages, 5 figures; v2: references added, typos fixed
title: Hochauflösende und tagesaktuelle Covid-19-Informationen
Creators: name: Daniell, James
name: Schäfer, Andreas
name: Spreen, Dierk
Publisher: name: Deutsches GeoForschungsZentrum GFZ
Year: 2020

description: Der CEDIM/Risklayer-Explorer bietet online aktuelle Daten auf Kreis-/Regionalebene zum Verlauf der Corona-Pandemie in Deutschland und weltweit.
A Novel Survey for Young Substellar Objects with the W-band filter III: Searching for very low mass brown dwarfs in Serpens South and Serpens Core
Creators: name: Dubber, Sophie
name: Biller, Beth
name: Allers, Katelyn
name: Jose, Jessy
name: Albert, Loïc
name: Pantoja, Blake
name: Fontanive, Clémence
name: Liu, Michael
name: Zhang, Zhoujian
name: Chen, Wen-Ping
name: Lalchand, Bhavana
name: Damian, Belinda
name: Sharma, Tanvi
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present CFHT photometry and IRTF spectroscopy of low-mass candidate members of Serpens South and Serpens Core ($\sim$430 pc, $\sim$0.5 Myr), identified using a novel combination of photometric filters, known as the W-band method. We report SC182952+011618, SS182959-020335 and SS183032-021028 as young, low-mass Serpens candidate members, with spectral types in the range M7-M8, M5-L0 and M5-M6.5 respectively. Best-fit effective temperatures and luminosities imply masses of $
description: Accepted for publication in MNRAS
An X-ray Imaging Study of the Stellar Population in RCW49
Creators: name: Tsujimoto, M.
name: Feigelson, E. D.
name: Townsley, L. K.
name: Broos, P. S.
name: Getman, K. V.
name: Wang, J.
name: Garmire, G. P.
name: Baba, D.
name: Nagayama, T.
name: Tamura, M.
name: Churchwell, E. B.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present the results of a high-resolution X-ray imaging study of the stellar population in the Galactic massive star-forming region RCW49 and its central OB association Westerlund 2. We obtained a 40 ks X-ray image of a 17'x17' field using the Chandra X-ray Observatory and deep NIR images using the Infrared Survey Facility in a concentric 8'3x8'3 region. We detected 468 X-ray sources and identified optical, NIR, and Spitzer Space Telescope MIR counterparts for 379 of them. The unprecedented spatial resolution and sensitivity of the X-ray image, enhanced by optical and infrared imaging data, yielded the following results: (1) The central OB association Westerlund 2 is resolved for the first time in the X-ray band. X-ray emission is detected from all spectroscopically-identified early-type stars in this region. (2) Most (86%) X-ray sources with optical or infrared identifications are cluster members in comparison with a control field in the Galactic Plane. (3) A loose constraint (2--5 kpc) for the distance to RCW49 is derived from the mean X-ray luminosity of T Tauri stars. (4) The cluster X-ray population consists of low-mass pre--main-sequence and early-type stars as obtained from X-ray and NIR photometry. About 30 new OB star candidates are identified. (5) We estimate a cluster radius of 6'--7' based on the X-ray surface number density profiles. (6) A large fraction (90%) of cluster members are identified individually using complimentary X-ray and MIR excess emission. (7) The brightest five X-ray sources, two Wolf-Rayet stars and three O stars, have hard thermal spectra.
description: 19 pages, 17 figures, 4 tables. ApJ in press
title: Sharing is caring: Investigating accountability practices in Italian autonomous state museums
Creators: name: Fino, Francesca
Publisher: name: IMT School for Advanced Studies Lucca
publisherIdentifier: https://ror.org/035gh3a49
publisherIdentifierScheme: ROR
Year: 2025

description: Since 2014, the Italian state museum system has been modified by
— among other innovations — the introduction of the “autonomous
museum” (d.p.c.m.August 29th 2014, n. 171 and d.m. December 23rd
2014, with subsequent amendments). Thanks to the reform, autonomous
museums are accountable for their own management and for the
fulfilment of their mission, are provided with specific management
bodies and internal organization structures, are able to directly manage
revenues and are required to prepare yearly accounting documents.
Public museums operate as hybrid institutions at the intersection
of public administration, cultural management, and heritage
conservation, and they must address multiple accountability demands.
However, empirical evidence on how museums engage with
accountability remains limited, particularly concerning non-financial
reporting and stakeholder engagement.
Drawing from accountability theory, this thesis investigates the
accountability practices of Italian autonomous state museums,
examining how these institutions navigate the tensions between
financial, managerial, and cultural responsibilities. The research
employs a qualitative approach, using case studies of two autonomous

museums to assess their accountability practices through semi-
structured interviews and document analysis.

Findings reveal that while autonomous museums comply with
mandatory financial reporting, voluntary disclosure remains
inconsistent and underdeveloped. The mainly hierarchical approach to
accountability applied by the Ministry of Culture primarily emphasizes
financial oversight and bureaucratic disclosure. The findings are also
analyzed considering the broader constraints and limitations imposed
on state museums by the current framework of autonomy.
By addressing these gaps, this research contributes to the
literature on museum accountability and cultural governance. It
underscores the need for an integrated and multidimensional approach
to accountability that can foster a more meaningful dialogue between
museums, policymakers, and the public.