cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Technological Competence is a Precondition for Effective Implementation of Virtual Reality Head Mounted Displays in Human Neuroscience: A Technological Review and Meta-analysis
Creators: name: Kourtesis, Panagiotis
name: Collina, Simona
name: Doumas, Leonidas A. A.
name: MacPherson, Sarah E.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: Computers and Society (cs.CY)
subject: Multimedia (cs.MM)
subject: FOS: Computer and information sciences
subject: B.8; C.4; D.0; J.4

description: Immersive virtual reality (VR) emerges as a promising research and clinical tool. However, several studies suggest that VR induced adverse symptoms and effects (VRISE) may undermine the health and safety standards, and the reliability of the scientific results. In the current literature review, the technical reasons for the adverse symptomatology are investigated to provide suggestions and technological knowledge for the implementation of VR head-mounted display (HMD) systems in cognitive neuroscience. The technological systematic literature indicated features pertinent to display, sound, motion tracking, navigation, ergonomic interactions, user experience, and computer hardware that should be considered by the researchers. Subsequently, a meta-analysis of 44 neuroscientific or neuropsychological studies involving VR HMD systems was performed. The meta-analysis of the VR studies demonstrated that new generation HMDs induced significantly less VRISE and marginally fewer dropouts.Importantly, the commercial versions of the new generation HMDs with ergonomic interactions had zero incidents of adverse symptomatology and dropouts. HMDs equivalent to or greater than the commercial versions of contemporary HMDs accompanied with ergonomic interactions are suitable for implementation in cognitive neuroscience. In conclusion, researchers technological competency, along with meticulous methods and reports pertinent to software, hardware, and VRISE, are paramount to ensure the health and safety standards and the reliability of neuroscientific results.
description: Published in Frontiers in Human Neuroscience, 4 Figures, 4 Tables
title: Angiographic scare
Creators: name: Mota Louro, João
Publisher: name: EURORAD
Year: 2019
Subjects: subject: Interventional radiology
subject: Abdomen
subject: Interventional vascular
subject: Catheter arteriography
subject: CT
subject: Chemoembolisation
subject: Clinical Cases

description: Clinical History: A 75-year-old male patient with alcoholic cirrhosis and portal hypertension, abstinent for 6 years. Routine imaging detected a 38mm lesion on segment IVa, suggestive of hepatocellular carcinoma (HCC) with afferent vascularisation originating in the middle hepatic artery (MHA). Multidisciplinary consensus decided drug-eluting bead trans-arterial chemoembolisation (DEB-TACE) as first line treatment.

description: 75 years, male
Gross Properties and Isotopic Phenomena in Spectator Fragmentation
Creators: name: Sfienti, C.
name: De Napoli, M.
name: Collaboration, the ALADiN2000
Publisher: name: arXiv
Year: 2006
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: A systematic study of isotopic effects in the break-up of projectile spectators at relativistic energies has been performed with the ALADiN spectrometer at the GSI laboratory. Searching for signals of criticality in the fragment production we have applied the model independent universal fluctuations theory already proposed to track criticality signals in multifragmentation to our data. The fluctuation of the largest fragment charge and of the asymmetry of the two and three largest fragments and their bimodal distribution have also been analysed.
description: 6 pages, 4 figures, IX International Conference on Nucleus-Nucleus Collisions, Rio de Janeiro, Brazil, August 28 - September 1, 2006
Designing Deeply Engaging Online Communities for Adolescents
Creators: name: Gurzick, David
Publisher: name: Maryland Shared Open Access Repository
Year: 2009
Subjects: Computer-mediated communication
Computer-supported cooperative work
Design science
Fieldtrip
Human-computer interaction
Online communities

description: American adolescents have experienced growth in their use of online communities; yet, it was unknown whether the current understanding of online-community design applied to the design of communities specific to adolescents. This study bridged this gap, examining (a) How adolescents interact in an online community designed in accordance with existing best practices, and; (b) Whether this understanding of interactions supports the refinement of existing design guidelines or necessitates the creation of new design guidelines to better promote adolescent interaction in an online community? Using a design-science approach, this research investigated an adolescent-centric online community as it progressed through an iterative design. The method involved two broad stages, each consisting of a build/evaluate cycle of an online-community artifact. In the first stage, an online-community for adolescents was created and evaluated in accordance with existing design guidelines. Self-reflection and identity development were two categories of interaction discovered that were not indicated by the guidelines. Theories of psychosocial and cognitive development helped understand the conditions in the community that enabled these interactions and were incorporated into refinements to the design guidelines. These were used to inform the design of a new community intended to promote self-reflection and identity development. This redesigned community was compared to the online community from the first stage (designed around existing best practices). Results revealed an increase in the number of adolescents engaging in desired interactions. This research provides a refined set of design guidelines that inform designers on how to create deeply engaging online communities for adolescents that support the cognitive and psychosocial developmental needs of their members.
title: Dedifferentiated retroperitoneal liposarcoma
Creators: name: Zabía Galíndez, Elena
Publisher: name: EURORAD
Year: 2019
Subjects: subject: Uroradiology & genital male imaging
subject: Abdomen
subject: CT
subject: Clinical Cases

description: Clinical History: A 54-year-old man presented with progressive abdominal distension without bowel or genitourinary complaints. Physical examination revealed a large mass in the right side of the abdomen. Laboratory findings were normal.

description: 54 years, male
Geographical dispersal of mobile communication networks
Creators: name: Lambiotte, Renaud
name: Blondel, Vincent D.
name: de Kerchove, Cristobald
name: Huens, Etienne
name: Prieur, Christophe
name: Smoreda, Zbigniew
name: Van Dooren, Paul
Publisher: name: arXiv
Year: 2008
Subjects: subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: In this paper, we analyze statistical properties of a communication network constructed from the records of a mobile phone company. The network consists of 2.5 million customers that have placed 810 millions of communications (phone calls and text messages) over a period of 6 months and for whom we have geographical home localization information. It is shown that the degree distribution in this network has a power-law degree distribution $k^{-5}$ and that the probability that two customers are connected by a link follows a gravity model, i.e. decreases like $d^{-2}$, where $d$ is the distance between the customers. We also consider the geographical extension of communication triangles and we show that communication triangles are not only composed of geographically adjacent nodes but that they may extend over large distances. This last property is not captured by the existing models of geographical networks and in a last section we propose a new model that reproduces the observed property. Our model, which is based on the migration and on the local adaptation of agents, is then studied analytically and the resulting predictions are confirmed by computer simulations.
description: 17 pages, 8 figures
Density Based Spatial Anomalous Window Discovery
Creators: name: Mohod, Prerna
Publisher: name: Maryland Shared Open Access Repository
Year: 2012
Subjects: anomalous window discovery
Clustering
crime
crime statistics
density based clustering
scan statistics

description: The focus of this thesis is to identifyanomalous spatial windows using clustering based methods. Spatial Anomalous windows are the contiguousgroupings of spatial nodes which are unusual with respect to the rest of thedata. Many scan statistics based approaches have been proposed for theidentification of spatial anomalous windows. To identify similarly behavinggroups of points, clustering techniques have been proposed. There are parallelsbetween both types of approaches but these approaches have not been usedinterchangeably. Thus the focus of our work is to bridge this gap and identify anomalous spatial windows usingclustering based methods. Specifically, we use the circular scan statisticbased approach and DBSCAN to bridge the gap between clustering and scanstatistics based approach. Our approach consists of the following steps: (a)Use the parameters proposed by DBSCAN to find core spatial nodes and its neighbors(b) Take combinations of nodes within a neighborhood to find smaller sub-setsof potentially anomalous windows (c) Take unions of all the combinations toexplore bigger sub-sets of potentially anomalous windows. (d) Computetest-statistic for each of the window to identify its degree of unusualness.The window with the highest value of test statistic is the most unusual ascompared to the rest of the data. We present extensive experimental results inUS crime data set for various regions. Our results show that our approach is effectivein identifying spatial anomalous windows and generally performs equal or betterthan existing scan statistic techniques and does better than a pure clusteringmethod.
Static Solitons of the Sine-Gordon Equation and Equilibrium Vortex Structure in Josephson Junctions
Creators: name: Kuplevakhsky, S. V.
name: Glukhov, A. M.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: The problem of vortex structure in a single Josephson junction in an external magnetic field, in the absence of transport currents, is reconsidered from a new mathematical point of view. In particular, we derive a complete set of exact analytical solutions representing all the stationary points (minima and saddle-points) of the relevant Gibbs free-energy functional. The type of these solutions is determined by explicit evaluation of the second variation of the Gibbs free-energy functional. The stable (physical) solutions minimizing the Gibbs free-energy functional form an infinite set and are labelled by a topological number Nv=0,1,2,... Mathematically, they can be interpreted as nontrivial ''vacuum'' (Nv=0) and static topological solitons (Nv=1,2,...) of the sine-Gordon equation for the phase difference in a finite spatial interval: solutions of this kind were not considered in previous literature. Physically, they represent the Meissner state (Nv=0) and Josephson vortices (Nv=1,2,...). Major properties of the new physical solutions are thoroughly discussed. An exact, closed-form analytical expression for the Gibbs free energy is derived and analyzed numerically. Unstable (saddle-point) solutions are also classified and discussed.
description: 17 pages, 4 Postscript figures
title: Sarcomatoid hepatocellular carcinoma
Creators: name: Macedo, João
Publisher: name: EURORAD
Year: 2019
Subjects: subject: Abdominal imaging
subject: Abdomen
subject: Liver
subject: CT
subject: Neoplasia
subject: Clinical Cases

description: Clinical History: A 62-year-old man was admitted to our hospital, sent from peripheral hospital for having large liver mass. Past medical history includes HBV-infection.
Abdominal CT scan showed the presence of a liver mass and pulmonary nodular lesions suggestive of metastasis. Laboratory tests showed elevation of tumour markers AFP and CYFRA 21-1.
The tumour was unresectable and patient died after two months.

description: 62 years, male
High-frequency variability in neutron-star low-mass X-ray binaries
Creators: name: Méndez, Mariano
name: Belloni, Tomaso M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Binary systems with a neutron-star primary accreting from a companion star display variability in the X-ray band on time scales ranging from years to milliseconds. With frequencies of up to ~1300 Hz, the kilohertz quasi-periodic oscillations (kHz QPOs) represent the fastest variability observed from any astronomical object. The sub-millisecond time scale of this variability implies that the kHz QPOs are produced in the accretion flow very close to the surface of the neutron star, providing a unique view of the dynamics of matter under the influence of some of the strongest gravitational fields in the Universe. This offers the possibility to probe some of the most extreme predictions of General Relativity, such as dragging of inertial frames and periastron precession at rates that are sixteen orders of magnitude faster than those observed in the solar system and, ultimately, the existence of a minimum distance at which a stable orbit around a compact object is possible. Here we review the last twenty years of research on kHz QPOs, and we discuss the prospects for future developments in this field.
description: 66 pages, 37 figures, 190 references. Review to appear in T. Belloni, M. Mendez, C. Zhang, editors, "Timing Neutron Stars: Pulsations, Oscillations and Explosions", ASSL, Springer
Colors and Mass-to-Light Ratios of Bulges and Disks of Nearby Spiral Galaxies
Creators: name: Yoshino, Akira
name: Ichikawa, Takashi
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We investigate colors and mass-to-light ratios ($M/L$s) of the bulges and disks for 28 nearby spiral galaxies with various morphological types of Sab to Scd, using images in optical and near-infrared ($V$, $I$, and $J$) bands and published rotation curves. It is shown that the observed colors and $M/L$s generally agree with the galaxy formation model with an exponentially declining star formation rate and shallow slope (ex. Scalo) initial mass function (IMF) for both the bulges and the disks. We find that the bulge $M/L$ is generally higher than the disk $M/L$ and that the galaxies with larger bulge-to-total luminosity ratio tend to have a smaller bulge $M/L$. The fact indicates that the luminosity-weighted average age of bulges for early-type spirals is younger than that of later-type spirals. These results support a formation scenario that produces young stars for the bulges of middle-type and early-type spirals.
description: 33 pages, 24 figures, PASJ accepted
Geisteswissenschaftliche Forschungsdaten finden und nachnutzen. Repositorien, Lizenzen, Schnittstellen
Creators: name: Schmitt, Fabian
name: Feldt, Emily
name: Günther, Josefne
Publisher: name: Zenodo
Year: 2025

description: Geisteswissenschaftliche Forschungsdaten können vielfältig nachgenutzt werden. Voraussetzung ist jedoch die Kenntnis gängiger Repositorien und ein Verständnis der Lizenzen, mit denen die Daten veröffentlicht wurden. Repositorien stellen dabei nicht nur Speicherorte, sondern auch wichtige Plattformen zur Sichtbarkeit und Verbreitung von Daten dar. Standardisierte Schnittstellen ermöglichen eine effiziente Suche, den Austausch und die Integration dieser Daten in eigene Projekte. Dieser Beitrag zeigt zentrale Ansätze und Werkzeuge auf, um geisteswissenschaftliche Forschungsdaten zu finden sowie rechtssicher und nachhaltig nutzbar zu machen.
Supplementary data- Relationship between Psychological Capital and Quality of Life in Married Indian Working Women
Creators: name: Onkar, Parnavi
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 520104
subject: Industrial and organisational psychology (incl. human factors)

description: This study aims to find relationship between Psychological Capital and Quality of Life in Indian working women, especially married. PCQ-24 and WHOQOL-BREF scales were used for this purpose. Results from self-reports of a sample of 85 women suggest that there indeed does exist a significant positive relationship between Psychological Capital and Quality of Life in married Indian working women
title: Optic neuritis caused by ethmoidal mucocele
Creators: name: López Sala, Paul
Publisher: name: EURORAD
Year: 2019
Subjects: subject: Head & neck imaging
subject: Head and neck
subject: CT
subject: MR
subject: Diagnostic procedure
subject: Clinical Cases

description: Clinical History: A 57-year-old woman presented to the emergency department with three-week history of headache that worsened with intermittent left-orbital pain and diplopia for a week. The patient had no personal history of interest.

description: 57 years, female
Optimal quantum chain communication by end gates
Creators: name: Burgarth, D.
name: Giovannetti, V.
name: Bose, S.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The scalability of solid state quantum computation relies on the ability of connecting the qubits to the macroscopic world. Quantum chains can be used as quantum wires to keep regions of external control at a distance. However even in the absence of external noise their transfer fidelity is too low to assure reliable connections. We propose a method of optimizing the fidelity by minimal usage of the available resources, consisting of applying a suitable sequence of two-qubit gates at the end of the chain. Our scheme allows also the preparation of states in the first excitation sector as well as cooling.
description: 6 pages, 4 figures; improved version includes discussion on finitely many gate applications
WinTtrclas, A Windows program for tetrahedrite group minerals
Creators: name: Yavuz, Fuat
Publisher: name: Periodico di Mineralogia
Year: 2024

description: A Microsoft® Visual Basic software, WinTtrclas, has been developed to calculate the chemical formulae of tetrahedrite group minerals (TGM) based on data obtained from wet-chemical and electron-microprobe analyses. WinTtrclas evaluates currently 40 valid mineral species using the New Minerals, Nomenclature and Classification (CNMMN) of the International Mineralogical Association (IMA–20) nomenclature scheme for the TGM in the general formula M(2)A6M(1)(B4C2)Σ6X(3)D4S(1)Y12S(2)Z within the tetrahedrite, tennantite, freibergite, arsenofreibergite, hakite, giraudite, rozhdestvenskayaite, goldfieldite, ústalečite, zvĕstovite and annivite series as well as one unassigned species. Considering occurrence of vacancies at anion sites as well as cation positions in some Te-bearing species, the program provides different estimation and normalization procedures such as the the ΣMe = 32, 29, 27 and 16 atomic per formula unit (apfu), as well as Σ(As + Sb + Te + Bi) = 4 (apfu) to estimate the chemical formulae of TGM species. Mineral formulae of the tetrahedrite group are calculated based on the dominant cations at the M(1), M(2), X(3) and dominant anions at the S(1)+S(2) sites. WinTtrclas operates in four stages: (1) it estimates cation and anion contents provided by input chemical data; (2) it determines the dominant cation and anion at the M(1), M(2), X(3) and S(1) sites; (3) it assigns the TGM to one of the eleven series, based on the dominant cations and anions at these sites; and (4) it classifies the TGM species into an appropriate series. WinTtrclas allows users to: (1) enter up to 20 input variables for mineral-chemical analyses; (2) type and load multiple TGM compositions in the data entry section; (3) edit and load the Microsoft® Excel files used in calculating, classifying, and naming the TGM, and (4) store all the calculated parameters in the output of a Microsoft® Excel file for further data evaluations. The program is distributed as a self-extracting setup file, including the necessary support files used by the program, a help file, and representative sample data files.
description: Periodico di Mineralogia, Vol. 93 No. 2 (2024)
Studies towards the synthesis of photosensitizers with improved biodistribution and light-absorbing properties
Creators: name: Johnson, Claire
Publisher: name: University of British Columbia
Year: 2009

description: The objective of this work was to develop methods for preparing novel photosensitizer drugs with a) improved selective accumulation in diseased tissue and b) increased wavelengths of activation. The approach taken to enhance selectivity involved exploiting the upregulation of steroid receptors within tumorous cells. Porphyrinic photosensitizers were conjugated to a variety of steroids, ranging from cholesterol to the estrogens and androgens. A number of linking methods were employed: cholesterol was attached at the 3-position via a carbamate group or a diene tether. However, these linkages were non-ideal, as the products lacked the desired stability or existed as geometric isomers, and so improved techniques were sought. This led to the development of a palladium-catalyzed cross-coupling technique to link 10- iodo-5,15-diphenylporphyrin with hormonal steroids ethynyl-substituted at the 17-position. Using this method, a series of steroid-porphyrin conjugates was prepared. In an extension of this work, selective couplings were performed on 5-bromo-15-iodo-10,20-diphenylporphyrin, in which the iodo-group alone reacted under mild conditions. A second coupling under more rigorous conditions resulted in reaction at the bromo-substituent, creating a bifunctionalized porphyrin product. This provides an alternative method to the synthesis of asymmetrically-substituted porphyrins. Efforts at increasing the absorption wavelength of the photosensitizer lead to the design and synthesis of new chlorin systems based on octaethylporphyrin and possessing exocyclic nitrogen-containing rings. Through these studies three new types of chlorin chromophore were prepared, each absorbing above 670 nm. In addition, an unusual dimeric chlorin was unexpectedly formed, for which an X-ray crystal structure was determined. Finally, attempts were made to prepare analogous chlorins based on other porphyrin systems. As initial efforts at synthesizing a tailor-made base porphyrin system were unsuccessful, 5,15-diphenylporphyrin was chosen as the starting material. Studies aimed improving the synthesis of this compound were partially successful. A series of meso-substituted diphenylporphyrin derivatives was prepared in a manner similar to that used for the octaethylporphyrin analogues. However, these derivatives did not give rise to chlorin products.
title: Decompression illness: Diving into an uncommon pathology
Creators: name: Soriano Aguadero, Ignacio
Publisher: name: EURORAD
Year: 2019
Subjects: subject: Chest imaging
subject: Lung
subject: Professional issues
subject: CT
subject: Clinical Cases

description: Clinical History: A 42-year-old man with no previous illness, was admitted for persistent cough, dyspnoea and headache several hours after recreational diving with rapid ascent.

description: 42 years, male
title: Polyarteritis nodosa with spontaneous bilateral aneurismatic kidney haemorrhage within one week
Creators: name: Hansen, Ida Vibeke
Publisher: name: EURORAD
Year: 2019
Subjects: subject: Uroradiology & genital male imaging
subject: Abdomen
subject: Anatomy
subject: Arteries / Aorta
subject: Kidney
subject: CT-Angiography
subject: Aneurysms
subject: Inflammation
subject: Clinical Cases

description: Clinical History: A 47-year-old female patient with six weeks history of swollen painful legs, treated with prednisolone, was admitted to the ER due to sudden onset of severe left-side abdominal pain. During hospitalisation further symptoms as peripheral numbness and unilateral drop foot emerged, as well as right-side sudden onset abdominal pain.

description: 47 years, female
Exponential-sum-approximation technique for variable-order time-fractional diffusion equations
Creators: name: Zhang, Jia-Li
name: Fang, Zhi-Wei
name: Sun, Hai-Wei
Publisher: name: arXiv
Year: 2021
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: In this paper, we study the variable-order (VO) time-fractional diffusion equations. For a VO function $α(t)\in(0,1)$, we develop an exponential-sum-approximation (ESA) technique to approach the VO Caputo fractional derivative. The ESA technique keeps both the quadrature exponents and the number of exponentials in the summation unchanged at the different time levels. Approximating parameters are properly selected to achieve efficient accuracy. Compared with the general direct method, the proposed method reduces the storage requirement from $\mathcal{O}(n)$ to $\mathcal{O}(\log^2 n)$ and the computational cost from $\mathcal{O}(n^2)$ to $\mathcal{O}(n\log^2 n)$, respectively, with $n$ being the number of the time levels. When this fast algorithm is exploited to construct a fast ESA scheme for the VO time-fractional diffusion equations, the computational complexity of the proposed scheme is only of $\mathcal{O}(mn\log^2 n)$ with $\mathcal{O}(m\log^2n)$ storage requirement, where $m$ denotes the number of spatial grids. Theoretically, the unconditional stability and error analysis of the fast ESA scheme are given. The effectiveness of the proposed algorithm is verified by numerical examples.
title: Persistent hyperplastic primary vitreous findings in an adult
Creators: name: Felices Farias, Jose Manuel
Publisher: name: EURORAD
Year: 2019
Subjects: subject: Head & neck imaging
subject: Eyes
subject: Ultrasound
subject: Ultrasound-Colour Doppler
subject: Diagnostic procedure
subject: Congenital
subject: Clinical Cases

description: Clinical History: The patient presented with vision loss due to a progressive development of a lens cataract in the left eye. Ophthalmologist could not properly evaluate posterior segment of the ocular globe, because of severe opacity provoked by the cataract lens. Hence, they underwent an ultrasound.

description: 59 years, female
Mitochondrial data unravels the human-mediated introduction of Mediodactylus kotschyi (Squamata: Gekkonidae) to the Central Balkan Peninsula
Creators: name: Delcour, Nathan
name: Urošević, Aleksandar
name: Anđelković, Marko
name: Maričić, Marko
name: Šević, Mirko
name: Vučić, Tijana
name: Tomović, Ljiljana
name: Rato, Catarina
Publisher: name: Brill Online
Year: 2024
Subjects: classificationCode: 310399
subject: Ecology not elsewhere classified

description: Kotschy’s gecko, Mediodactylus kotschyi, is native to the Eastern part of the Mediterranean Basin and a successful colonizer, with an extensive distribution across the Balkans and outside its native range. In Serbia, it was presumed native in Prizren (Kosovo and Metohija province) and introduced across the remaining territory. To explore the origin of Serbian Kotschy’s gecko, we collected specimens from most of the Serbian populations where the species was recorded and assessed their phylogenetic relationships based on three mtDNA markers (COI, cytb, 16S rRNA) under Maximum Likelihood (ML) and Bayesian Inference (BI) approaches. First, our results support that the specimens found in Serbia belong to M. kotschyi. Second, all populations except Prizren belong to the subspecies M. kotschyi skopjensis. Furthermore, the Italian populations are sister to the specimens from Prizren, suggesting a Balkan origin for these populations, which settled in Apulia likely through ancient human-mediated dispersion. The small genetic differentiation found suggests that Kotschy’s gecko rapidly colonized the Central Balkans, originating from Northern Greece and North Macedonia. The results also suggest a story of multiple, complex (most likely) human-mediated introductions. However, further studies should be conducted to properly elucidate the colonization pathways, and to truly disentangle the potential fast natural range expansion from an anthropogenic dispersion of this gecko species.
The Milagro anticenter hot spots: cosmic rays from the Geminga supernova ?
Creators: name: Salvati, M.
name: Sacco, B.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The Milagro experiment has announced the discovery of an excess flux of TeV cosmic rays from the general direction of the heliotail, also close to the Galactic anticenter. We investigate the hypothesis that the excess cosmic rays were produced in the SN explosion that gave birth to the Geminga pulsar. The assumptions underlying our proposed scenario are that the Geminga supernova occurred about 3.4 10^5 years ago (as indicated by the spin down timescale), that a burst of cosmic rays was injected with total energy 10^49 erg (i.e., about 1% of a typical SN output), and that the Geminga pulsar was born with a positive radial velocity of 100--200 km s^-1. We find that our hypothesis is consistent with the available information. In a first variant (likely oversimplified), the cosmic rays have diffused according to the Bohm prescription (i.e., with a diffusion coefficient on the order of c times r_L, with c the speed of light and r_L the Larmor radius). An alternative scheme assumes that diffusion only occurred initially, and the final propagation to the Sun was a free streaming in a diverging magnetic field. If the observed cosmic ray excess does indeed arise from the Geminga SN explosion, the long--sought "smoking gun" connecting cosmic rays with supernovae would finally be at hand. It could be said that, while looking for the "smoking gun", we were hit by the bullets themselves.
description: Astronomy and Astrophysics, accepted; includes modifications suggested by the referee; 4 pages and 1 figure
title: Kaposiform haemangioendothelioma complicated by Kasabach-Merritt phenomenon
Creators: name: Vilas Boas, Filipa
Publisher: name: EURORAD
Year: 2019
Subjects: subject: Paediatric radiology
subject: Paediatric
subject: MR
subject: Ultrasound-Colour Doppler
subject: Diagnostic procedure
subject: Arteriovenous malformations
subject: Clinical Cases

description: Clinical History: A newborn presented with purple-brown skin lesion, with 3 cm in the upper thigh. At 3-months-old the lesion had extended to the genital area (Fig. 1). Laboratory tests revealed thrombocytopenia, hypofibrinogenemia and increased D-dimers and consumptive coagulopathy was diagnosed.

description: 3 months, female
title: Congenital craniopharyngioma
Creators: name: Jadhav, Deepa
Publisher: name: EURORAD
Year: 2019
Subjects: subject: Paediatric radiology
subject: Head and neck
subject: Neuroradiology brain
subject: CT
subject: MR
subject: Clinical Cases

description: Clinical History: A neonate underwent MRI brain on post-natal day one, because of large head circumference at birth. The latest antenatal scan was maternal anomaly scan which did not reveal any abnormality. 

description: 2 years, female
title: Intervertebral high-signal intensity on T1-weighted MR image in ankylosing spondylitis
Creators: name: Symoens, Elien
Publisher: name: EURORAD
Year: 2019
Subjects: subject: Musculoskeletal system
subject: Musculoskeletal bone
subject: Musculoskeletal joint
subject: Musculoskeletal spine
subject: MR
subject: Clinical Cases

description: Clinical History: A 34-year-old man complained of inflammatory back pain, alternating buttock pain and restriction in spinal mobility. Therefore, the man was referred for a full spine MRI examination.

description: 34 years, male
Minimal Supergravity, Inflation, and All That
Creators: name: Ibe, M.
name: Izawa, K. -I.
name: Shinbara, Y.
name: Yanagida, T. T.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We consider an inflationary model in the hidden-sector broken supergravity with an effectively large cutoff. The inflaton decay into right-handed neutrinos naturally causes the observed baryon asymmetry of the universe with a reheating temperature low enough to avoid the gravitino overproduction. We emphasize that all the phenomenological requirements from cosmology and particle physics are satisfied in the large-cutoff theory.
description: 15pages, 4figures, text and refs. added
Region-guided transformer for remote sensing image captioning
Creators: name: Zhao, Kai
name: Xiong, Wei
Publisher: name: Taylor & Francis
Year: 2024
Subjects: Space Science
Medicine
Chemical Sciences not elsewhere classified
Biological Sciences not elsewhere classified
Information Systems not elsewhere classified
Science Policy

description: Remote sensing image acquisition is an essential way to obtain information. However, research on remote sensing images mainly focuses on object detection or image classification. The emergence of remote sensing image captioning (RSIC) has enabled understanding and inference of remote sensing images, thus attracting considerable attention. There are still challenges in RSIC: the features used in RSIC are mostly based on grid features, and this form of features makes it difficult for the model to determine the main description targets. Hence, a more effective cross-modal matching method is needed for better text generation. Thus, we propose a region-guided transformer in response to the aforementioned issues. We extracted region features to enhance the ability of the model to focus on the main targets. To address the issue of information loss caused by region feature extraction, we proposed environment features to supplement background information. To improve the matching between text and image features, we propose a region-guided decoder that enhances the model's perception of different features through a weighted cross-attention mechanism. Meanwhile, we introduce region-guided information to guide the text-generation process. The effectiveness and superiority of our model have been demonstrated through extensive experiments.
Empirically Testing the Impact of Recommender Agents on Online Consumer Purchasing Behavior
Creators: name: Hostler, Raymond Eric
Publisher: name: Maryland Shared Open Access Repository
Year: 2007
Subjects: Information Science (0723)
Computer Science (0984)
Artificial Intelligence (0800)
intelligent agents
recommender systems
e-commerce
impulse purchasing
consumer behavior

description: Intelligent Product Recommendation Agents have been used for some time now by large, well known Internet businesses such as Amazon and Netflix.  Unfortunately there is little research assessing the effectiveness of these systems in influencing online consumer behavior.  Businesses that sell products via the Internet have little information to guide their decision making when deciding whether or not a capital investment in implementing such a system is warranted, and what the implementation of such a system will potentially do for their business.  This research seeks to determine what impact recommender systems have on online consumer behavior so that managers and online business owners will have relevant data on which to base their decision of whether or not to implement such a system.  This study develops a theoretical model which illustrates the impact that such recommender systems have on online consumer behavior.  The model is tested using an online shopping simulation using a collaborative filtering based product recommendation agent.  Particular attention is paid to the effects of the recommender agent on the consumer's behavior during the need recognition phase of Consumer Buyer Behavior Theory.  The results of the study suggest that the theoretical model is sound and provides insight into the impact of recommender systems on online consumer behavior.  Results suggest that such systems to affect online consumers and provide some valuable insights for online businesses considering implementing an intelligent product recommendation agent.
The effect of artificial selection for extended life span and late age fecundity on the age-specific phagocytic ability of blood cells in adult Drosophila melanogaster
Creators: name: Ji, Zhejun
Publisher: name: Maryland Shared Open Access Repository
Year: 2012
Subjects: aging
Drosophila
engulfment
immunosenescence
innate immunity
phagocytosis

description: Immunosenescence is defined as the functional decline of the immune response with age and is found in most organisms.  In mammals both the innate and adaptive components of the immune response decline with age, however, the cellular and genetic mechanisms of this phenomenon still remain unclear.  Here, I use Drosophila melanogaster as our model to study the general effect of age on innate immunity.  I studied the effect of age on phagocytic ability in six distinct Drosophila lations: three populations that had been artificially selected for extended life span and three unselected control populations.  I measured phagocytic ability by injecting fluorescently-labeled heat killed E. coli  flies at different ages and counted the number of E. coli lfed by the blood cells around the heart.  Interestingly, I found that the average number of E. coli  were engulfed by blood cells increased with age in all six fly populations.  While there was no difference between the Selected and Control flies when data were combined across ages, I did find that the effect of age on phagocytic ability differed between the Control and Selected populations.  The Control populations had a relatively larger number of engulfed bacteria at early age while populations selected for longer life span and increased late age fecundity had a higher engulfment at older age.  To further test the efficiency of the phagocytic ability, I independently injected four of the populations with latex beads, which cannot be digested after engulfment by the blood cells.  I found variable results with the beads but in general they were consistent with the bacteria data.  In conclusion, our data indicates that life span extension is genetically correlated with phagocytosis ability and exhibits a trade-off with early age phagocytic efficiency.  Understanding the genetic basis of this trade-off is an important topic for future study.
Constituent quarks, chiral symmetry, and chiral point of the constituent quark model
Creators: name: Lucha, Wolfgang
name: Melikhov, Dmitri
name: Simula, Silvano
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We construct the full axial current of the constituent quarks by a summation of the infinite number of diagrams describing constituent-quark soft interactions. By requiring that the conservation of this current is violated only by terms of order $O(M_π^2)$, where $M_π$ is the mass of the lowest pseudoscalar $\bar QQ$ bound state, we derive important constraints on (i) the axial coupling $g_A$ of the constituent quark and (ii) the $\bar QQ$ potential at large distances. We define the chiral point of the constituent quark model as those values of the parameters, such as the masses of the constituent quarks and the couplings in the $\bar QQ$ potential, for which $M_π$ vanishes. At the chiral point the main signatures of the spontaneously broken chiral symmetry are shown to be present, namely: the axial current of the constituent quarks is conserved, the leptonic decay constants of the excited pseudoscalar bound states vanish, and the pion decay constant has a nonzero value.
description: 10 pages, typo in eq. (46) of the published version is corrected
Edge-enabled Optimized Network Slicing in Large Scale Networks
Creators: name: Esteves, Jose Jurandir Alves
name: Boubendir, Amina
name: Guillemin, Fabice
name: Sens, Pierre
Publisher: name: arXiv
Year: 2020
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: In this demo paper, we consider the network slice placement optimization problem and give some insights into a fast heuristic algorithm tailored to placement in large scale networks. We consider an online optimization scenario with multiple and volatile network slice request arrivals and we showcase the applicability of the proposed Edge-enabled network slice placement solution through a Proof-of-Concept illustrated by large scale networks scenarios.
CG-Net: Conditional GIS-aware Network for Individual Building Segmentation in VHR SAR Images
Creators: name: Sun, Yao
name: Hua, Yuansheng
name: Mou, Lichao
name: Zhu, Xiao Xiang
Publisher: name: arXiv
Year: 2020
Subjects: subject: Image and Video Processing (eess.IV)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Object retrieval and reconstruction from very high resolution (VHR) synthetic aperture radar (SAR) images are of great importance for urban SAR applications, yet highly challenging owing to the complexity of SAR data. This paper addresses the issue of individual building segmentation from a single VHR SAR image in large-scale urban areas. To achieve this, we introduce building footprints from GIS data as complementary information and propose a novel conditional GIS-aware network (CG-Net). The proposed model learns multi-level visual features and employs building footprints to normalize the features for predicting building masks in the SAR image. We validate our method using a high resolution spotlight TerraSAR-X image collected over Berlin. Experimental results show that the proposed CG-Net effectively brings improvements with variant backbones. We further compare two representations of building footprints, namely complete building footprints and sensor-visible footprint segments, for our task, and conclude that the use of the former leads to better segmentation results. Moreover, we investigate the impact of inaccurate GIS data on our CG-Net, and this study shows that CG-Net is robust against positioning errors in GIS data. In addition, we propose an approach of ground truth generation of buildings from an accurate digital elevation model (DEM), which can be used to generate large-scale SAR image datasets. The segmentation results can be applied to reconstruct 3D building models at level-of-detail (LoD) 1, which is demonstrated in our experiments.
EmoChat:  Emotional Instant Messaging with the Epoc Headset
Creators: name: Wright, Franklin Pierce
Publisher: name: Maryland Shared Open Access Repository
Year: 2010
Subjects: Brain-Computer Interface
Emotion
Epoc
Human-Computer Interaction
Instant Messaging

description: Interpersonal communication benefits greatly from the emotional information encoded by facial expression, body language, and tone of voice, however this information is noticeably missing from typical instant message communication.  This work investigates how instant message communication can be made richer by including emotional information provided by the Epoc headset.  First, a study establishes that the Epoc headset is capable of inferring some measures of affect with reasonable accuracy.  Then, the novel EmoChat application is introduced which uses the Epoc headset to convey facial expression and levels of basic affective states during instant messaging sessions.  A study compares the emotionality of communication between EmoChat and a traditional instant messaging environment.  Results suggest that EmoChat facilitates the communication of emotional information more readily than a traditional instant messaging environment.
Spectroscopic analysis of the argon scintillation with a wavelength sensitive particle detector
Creators: name: Santorelli, R.
name: Garcia, E. Sanchez
name: Abia, P. Garcia
name: González-Díaz, D.
name: Manzano, R. Lopez
name: Morales, J. J. Martinez
name: Pesudo, V.
name: Romero, L.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We performed a time-resolved spectroscopic study of the VUV/UV argon scintillation as a function of pressure and electric field, by means of a wavelength sensitive detector operated with different radioactive sources. Our work conveys new evidence of distinctive features of the argon light which are in contrast with the general assumption that, for particle detection purposes, the scintillation can be considered to be largely monochromatic at 128 nm (second continuum). The wavelength and the time-resolved analysis of the photon emission reveal that the dominant component of the argon scintillation during first tens of ns is in the range [160, 325] nm. This light is consistent with the third continuum emission from highly charged argon ions/molecules. This component of the scintillation is field-independent up to 25 V/cm/bar and shows a very mild dependence with pressure in the range [1,16] bar. The dynamics of the second continuum emission is dominated by the excimer formation time, whose variation as a function of the pressure has been measured. Additionally, the time and pressure-dependent features of electron-ion recombination, in the second continuum band, have been measured. This study opens new paths toward a novel particle identification technique based on the spectral information of the noble-elements scintillation light.
description: 20 pages, 15 figures
Dynamic Document Clustering Using Singular Value Decomposition
Creators: name: Nadubeedi Ramesh, Rashmi
Publisher: name: Maryland Shared Open Access Repository
Year: 2011
Subjects: curse of dimensionality
document clustering
folding-in
linear algebra
singular value decomposition
updating

description: Document Clustering is a widely researched area in data mining. It is a technique of grouping similar documents based on a measure of similarity. Document Clustering forms an important aspect in Information Retrieval for improving precision and recall in search applications, navigation and presentation of search results. But due to the tremendous amount of features, textual data suffers from the Curse of Dimensionality. Moreover, adding new features increases the noise in the data. To address these issues, in this thesis we investigate the use of Singular Value Decomposition (SVD) and propose a sophisticated Document Clustering algorithm combining folding-in method and k-means algorithm, to efficiently store and dynamically incorporate new textual data into the existing cluster formations. We test our approach by introducing new documents in increments of 1%, 5%, 10%, 15%, and 20%. These new documents are added in two variations. One document set comprises of completely new documents and the other is formed by modifying the existing documents. Our method promises significant improvements in computation costs, storage costs and cluster quality compared to recomputing-SVD method. We also present a novel approach for retrieving documents of interest to the users. The user can choose documents using different window sizes either time windows or subset of documents. Our experimental evaluations show that the proposed method of document retrieval outperforms recomputing-SVD method significantly in computation time with promise of flexibility and good cluster quality.