cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Big Data Analytics-Enhanced Cloud Computing: Challenges, Architectural Elements, and Future Directions
Creators: name: Buyya, Rajkumar
name: Ramamohanarao, Kotagiri
name: Leckie, Chris
name: Calheiros, Rodrigo N.
name: Dastjerdi, Amir Vahid
name: Versteeg, Steve
Publisher: name: arXiv
Year: 2015
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: FOS: Computer and information sciences
subject: C.1.4; C.2.4

description: The emergence of cloud computing has made dynamic provisioning of elastic capacity to applications on-demand. Cloud data centers contain thousands of physical servers hosting orders of magnitude more virtual machines that can be allocated on demand to users in a pay-as-you-go model. However, not all systems are able to scale up by just adding more virtual machines. Therefore, it is essential, even for scalable systems, to project workloads in advance rather than using a purely reactive approach. Given the scale of modern cloud infrastructures generating real time monitoring information, along with all the information generated by operating systems and applications, this data poses the issues of volume, velocity, and variety that are addressed by Big Data approaches. In this paper, we investigate how utilization of Big Data analytics helps in enhancing the operation of cloud computing environments. We discuss diverse applications of Big Data analytics in clouds, open issues for enhancing cloud operations via Big Data analytics, and architecture for anomaly detection and prevention in clouds along with future research directions.
description: 10 pages, 2 figures, conference paper in Proceedings of the 21st IEEE International Conference on Parallel and Distributed Systems (ICPADS 2015, IEEE Press, USA), Melbourne, Australia, December 14-17, 2015
An improved necessary condition for the Schrödinger maximal estimate
Creators: name: Lucà, Renato
name: Rogers, Keith
Publisher: name: arXiv
Year: 2015
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 42B37

description: We improve the necessary condition for Carleson's problem regarding convergence for the Schrödinger equation in dimensions $n\ge 3$. We prove that if the solution converges almost everywhere to its initial datum as time tends to zero, for all data in $H^s(\mathbb{R}^n)$, then $s\ge \frac{n}{2(n+2)}$.
description: 7 pages
‘But Now I Yearn for a … Story About a Cripple Who Isn’t Cured’: Representations of Disability in Middle Grade and Young Adult Literature
Creators: name: Shortley, Vanessa
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2018

description: Disabled youth and teens, like those from other marginalized identities, need authentic and honest representations of themselves in books, but disability has long been excluded from many calls for more diverse books. This critical analysis examines 10 middle grade and young adult books for stereotypical portrayals of disabled people and how the authors cultivate or subvert those tropes. It also discusses how disability is viewed in society, the language of disability, and the necessity of critically engaging with literature.
Self-reported reasons for copyright infringement on the web
Creators: name: Burgess, Tara L.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1999
Subjects: Surveys--Copyright
Copyright--Computer-stored information
Copyright-Legislation
World-Wide-Web--Legal-aspects
Freedom of information

description: This study surveyed potential copyright infringers using an anonymous Web questionnaire.  The survey attempted to discover the reasons that Web authors of personal pages violate copyright laws in creating their Web pages.  It attempted to determine their basic knowledge of copyright and to elicit their rationales for violating copyright.                                                                    Forty-three usable surveys were returned over two weeks.  The most common rationales for posting copyrighted images to the Web was that their use was non-profit and constituted free advertising for the creators of the copyrighted materials.  Most respondents rated themselves as "pretty knowledgeable", with almost as many indicating that they "didn't know much".  This survey affirmed that disdain, ignorance, convenience and perceived anonymity were present in Web authors violating copyright.  No one factor was found to be predominant.
Spacetimes with a separable Klein-Gordon equation in higher dimensions
Creators: name: Kolar, Ivan
name: Krtous, Pavel
Publisher: name: arXiv
Year: 2015
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study spacetimes that lead to a separable Klein-Gordon equation in a general dimension. We introduce an ansatz for the metric in higher dimensions motivated by analogical work by Carter in four dimensions and find solutions of the Klein-Gordon equation. For such a metric we solve the Einstein equations and regain the Kerr-NUT-(A)dS spacetime as one of our results. Other solutions lead to the Einstein-Kähler metric of a Euclidean signature. Next we investigate a warped geometry of two Klein-Gordon separable spaces with a properly chosen warped factor. We show that the resulting metric leads also to a separable Klein--Gordon equation and we find the corresponding solutions. Finally, we solve the Einstein equations for the warped geometry and obtain new solutions.
description: 12 pages, no figures
Local Government and the Public Library: A Case Study of the Creation of the Carrboro Cybrary
Creators: name: Weiss, Emily M.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2005
Subjects: Library-community relations--Case studies
Library--Community relations--North Carolina
Cybraries--Case studies
Public libraries--Relations with local government

description: Public libraries provide important services to their communities; however, many communities do not receive sufficient public library services. This case study will examine one community, Carrboro, North Carolina, which advocated for increased library services through the creation of the Carrboro Cybrary, a small branch of the Orange County library system that focuses on providing access to Internet based resources. The author interviewed participants and leaders in the effort to create the Cybrary and analyzed town, county, and library task force documents to learn how community leaders successfully advocated for the Cybrary. This paper describes the effect of town/county relationships, what conflicts arose, and what factors influenced the community's success. One of the most significant findings was that the local government was as much a driving force as the public's desire to have a library. This study will be useful to other communities that want to advocate for increased library services.
Machine Learning Model of the Swift/BAT Trigger Algorithm for Long GRB Population Studies
Creators: name: Graff, Philip B
name: Lien, Amy Y
name: Baker, John G
name: Sakamoto, Takanori
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: Machine Learning (stat.ML)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: To draw inferences about gamma-ray burst (GRB) source populations based on Swift observations, it is essential to understand the detection efficiency of the Swift burst alert telescope (BAT). This study considers the problem of modeling the Swift/BAT triggering algorithm for long GRBs, a computationally expensive procedure, and models it using machine learning algorithms. A large sample of simulated GRBs from Lien 2014 is used to train various models: random forests, boosted decision trees (with AdaBoost), support vector machines, and artificial neural networks. The best models have accuracies of $\gtrsim97\%$ ($\lesssim 3\%$ error), which is a significant improvement on a cut in GRB flux which has an accuracy of $89.6\%$ ($10.4\%$ error). These models are then used to measure the detection efficiency of Swift as a function of redshift $z$, which is used to perform Bayesian parameter estimation on the GRB rate distribution. We find a local GRB rate density of $n_0 \sim 0.48^{+0.41}_{-0.23} \ {\rm Gpc}^{-3} {\rm yr}^{-1}$ with power-law indices of $n_1 \sim 1.7^{+0.6}_{-0.5}$ and $n_2 \sim -5.9^{+5.7}_{-0.1}$ for GRBs above and below a break point of $z_1 \sim 6.8^{+2.8}_{-3.2}$. This methodology is able to improve upon earlier studies by more accurately modeling Swift detection and using this for fully Bayesian model fitting. The code used in this is analysis is publicly available online (https://github.com/PBGraff/SwiftGRB_PEanalysis).
description: 16 pages, 18 figures, 5 tables, published by ApJ
An analysis of current expressed reading interests of children and young adults in North Carolina
Creators: name: Reeves, Melanie D.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2001
Subjects: Surveys--Children's reading
Children's reading interests

description: This study analyzes the current expressed reading interests of children ages 2-18 in North Carolina. Response cards were collected from participants as part of a North Carolina State Library program called "the very best place to start." One thousand entries from the approximately 150,000 collected were randomly drawn, recorded in a data set, and analyzed based on age, sex, and reading interest as an initial pilot study. The results found that animals was the overwhelming favorite category of both male and female respondents. Other popular categories include: science, sports, literature, biography, history, geography, computers, health, careers, music, vehicles, and games. Male and female study participants largely indicated interest in the same topics; however, gender differences were apparent with relation to sports, vehicles, health, and music. Categories such as careers and computers, which in the past have been male dominated, were found to be more gender neutral. While the findings of this study do resemble those of previous studies, important differences did emerge.
Quenching star formation: insights from the local main sequence
Creators: name: Leslie, Sarah K.
name: Kewley, Lisa J.
name: Sanders, David B.
name: Lee, Nicholas
Publisher: name: arXiv
Year: 2015
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The so-called star-forming main sequence of galaxies is the apparent tight relationship between the star formation rate and stellar mass of a galaxy. Previous studies exclude galaxies which are not strictly 'star forming' from the main sequence, because they do not lie on the same tight relation. Using local galaxies in the Sloan Digital Sky Survey we have classified galaxies according to their emission line ratios, and studied their location on the star formation rate - stellar mass plane. We find that galaxies form a sequence from the `blue cloud' galaxies which are actively forming stars, through a combination of composite, Seyfert, and LINER (Low-ionization nuclear emission-line region) galaxies, ending as 'red-and-dead' galaxies. The sequence supports an evolutionary pathway for galaxies in which star formation quenching by active galactic nuclei (AGN) plays a key role.
description: 5 pages, 2 figures. Accepted by MNRAS 2015 September 15. First published online November 4, 2015
MS Gr. class. c. 5 979
Creators: name: Oxyrhynchus Papyri
Publisher: name: University of Oxford
Year: 2023
Subjects: classificationCode: 470316
subject: Latin and classical Greek languages

description: P.Herc. 1148 col. a col. b. Epicurus, De natura 14
Drawing by Carlo Orazi
IRIS and SDO observation of recurrent explosive events
Creators: name: Gupta, G. R.
name: Tripathi, Durgesh
Publisher: name: arXiv
Year: 2015
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Observations of recurrent explosive events (EEs) with time scale of 3-5 minutes are reported. These EEs have been observed with the Interface Region Imaging Spectrograph (IRIS) and have a spatial dimension of $\sim1.5"$ along the slit. The spectral line profiles of \ion{C}{2}~$1335/1336$ Å and \ion{Si}{4}~$1394/1403$ Å become highly broadened both in red as well as blue wings. Several absorption lines on top of the broadened profiles were identified. In addition, emission lines corresponding to neutral lines such as \ion{Cl}{1}~1351.66~Å, \ion{C}{1}~1354.29~Å, and \ion{C}{1}~1355.84~Å were identified. The \ion{C}{1}~1354.29~Å, and \ion{C}{1}~1355.84 Å lines were found only during the EEs whereas \ion{Cl}{1}~1351.66~Å broadens during the EEs. The estimated lower limit on electron number density obtained using the line ratios of \ion{Si}{4} and \ion{O}{4} is about $10^{13.5}$ cm$^{-3}$, suggesting that the observed events are most likely occurring at heights corresponding to lower chromosphere. To the best of our knowledge, for the first time we have detected short-period variability (30 s and 60--90 s) within the EE bursts. Observations of photospheric magnetic field underneath EEs indicate that negative polarity field emerges in the neighbourhood of oppositely directed positive fields which undergo repetitive reconnection (magnetic flux cancellation) events. The dynamic changes observed in AIA 1700 Å, 1600 Å, \ion{C}{2} 1330 Å and \ion{Si}{4} 1400 Å intensity images corresponded very well with the emergence and cancellation of photospheric magnetic field (negative polarity) on the time scale of 3--5 min. The observations reported here suggests that these EEs are formed due to magnetic reconnection and are occurring in the lower chromosphere.
description: accepted for publication in ApJ
Biologically-based, local learning rule can solve the nonlinear feature binding problem in multicompartmental models of striatal projection neurons
Creators: name: Trpevski, Daniel
name: Khodadadi, Zahra
name: Hellgren Kotaleski, Jeanette
Publisher: name: Zenodo
Year: 2023

description: Poster presentation at EMBO Workshop Dendrites 2022: Dendritic anatomy, molecules and function 23– 26 May 2022, Heraklion, Greece.
Eliciting Expectation Uncertainty from Private Households
Creators: name: Dovern, Jonas
Publisher: name: Humboldt-Universität zu Berlin
Year: 2023
Subjects: subject: macroeconomic expectations
subject: expectation uncertainty
subject: density expectations
subject: 330 Wirtschaft

description: Recently, much attention has been devoted to the measurement of macroeconomic (expectation) uncertainty and its impact on aggregate economic fluctuations. This paper presents a new qualitative measure of macroeconomic expectation uncertainty based on data from a German online survey of consumer expectations. I document that the survey design works well. Elicited expectation uncertainty is related to data volatility and conventional measures of uncertainty as expected. Its dependency on socioeconomic factors is in line with previous evidence based on quantitative uncertainty measures. The new measure offers a very efficient way of eliciting expectation uncertainty and can be used to obtain uncertainty measures on many different expectations at low cost.
Orbital phase resolved spectroscopy of 4U1538-52 with MAXI
Creators: name: Rodes-Roca, J. J.
name: Mihara, T.
name: Nakahira, S.
name: Torrejón, J. M.
name: Giménez-García, Á.
name: Bernabéu, G.
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: 4U 1538-52, an absorbed high mass X-ray binary with an orbital period of 3.73 days, shows moderate orbital intensity modulations with a low level of counts during the eclipse. Several models have been proposed to explain the accretion at different orbital phases by a spherically symmetric stellar wind from the companion. The aim of this work is to study both the light curve and orbital phase spectroscopy of this source in the long term. Particularly, the folded light curve and the changes of the spectral parameters with orbital phase to analyse the stellar wind of QV Nor, the mass donor of this binary system. We used all the observations made from the Gas Slit Camera on board MAXI of 4U 1538-52 covering many orbits continuously. We obtained the good interval times for every orbital phase range which were the input to extract our data. We estimated the orbital period of the system and then folded the light curves and we fitted the X-ray spectra with the same model for every orbital phase spectrum. We also extracted the averaged spectrum of all the MAXI data available. The MAXI spectra in the 2-20 keV energy range were fitted with an absorbed Comptonization of cool photons on hot electrons. We found a strong orbital dependence of the absorption column density but neither the fluorescence iron emission line nor low energy excess were needed to fit the MAXI spectra. The variation of the spectral parameters over the binary orbit were used to examine the mode of accretion onto the neutron star in 4U 1538-52. We deduce a best value of $\dot{M}/v_\infty=0.65\times 10^{-9}$ $M_{\odot} \, yr^{-1}/(km \, s^{-1})$ for QV Nor.
description: 12 pages, 5 figures, accepted to be published by A&A, corrected typos (changing bold font to normal one)
Wollea ambigua R. Y. Singh 1942
Creators: name: Mcgregor, Glenn B.
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Bacteria
Cyanobacteria
Cyanobacteriia
Cyanobacteriales
Aphanizomenonaceae
Wollea
Wollea ambigua

description: Wollea ambigua (C.B.Rao) R.Y. Singh (1942) Fig. 54 A–C.
 Basionym: Anabaena ambigua C.B.Rao (1937: 101)
Filaments solitary or several together in a parallel arrangement, enclosed in a firm, hyaline mucilaginous sheath up to 50 μm wide. Trichomes straight or flexuous, clearly constricted at the cross walls, ± narrowed towards the ends. Vegetative cells shortly barrel-shaped, 3.5–5.0 μm long × 4.5–7.0 μm wide; apical cells rounded. Heterocytes intercalary, spherical to slightly oval, solitary, 6.5–9.0 μm in diameter. Akinetes elongate-ellipsoidal, adjacent to the heterocytes, 13.0–16.5 μm long × 7.5–11.0 μm wide.
 Specimens examined:—Balonne R. at St George, Balonne Minor R. at Cubbie, Bokhara R. near Kirrima, Condamine R. at Elbow Valley, Coopers Ck Tanbar Waterhole at Tanbar, Maranoa R. at Cashmere, Thomson R. Top Waterhole at Noonbah.
 Observations:—Growing amongst other algae and aquatic macrophytes in the shallows and littoral areas of lowland rivers and associated waterholes.
description: Published as part of Mcgregor, Glenn B., 2018, Freshwater Cyanobacteria of North-Eastern Australia: 3. Nostocales, pp. 448-450 in Phytotaxa 359 (1) on pages 448-450, DOI: 10.11646/phytotaxa.359.1.1, http://zenodo.org/record/13704051
End-user System for Generating SoundExchange Reports
Creators: name: Cowhig, David
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2016
Subjects: Web databases
Cloud computing--Distributed computing
Information storage & retrieval systems

description: This paper describes the design, implementation, and testing of an information system built to generate streaming radio reports for ibiblio and the open-source Icecast streaming media server. This new system allows end-users to generate reports on demand, in either standard Icecast format or the SoundExchange 2013 reporting format. The system was designed to help aid community radio stations in complying with government reporting and regulations. In addition, a plan to increase system availability for ibiblio radio streaming is discussed.
The energy level crossing behavior and quantum Fisher information in a quantum well with spin-orbit coupling
Creators: name: Wang, Z. H.
name: Zheng, Q.
name: Wang, Xiaoguang
name: Li, Y.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the energy level crossing behavior in two-dimensional quantum well with the Rashba and Dresselhaus spin-orbit couplings (SOCs). By mapping the SOC Hamiltonian onto an anisotropic Rabi model, we obtain the approximate ground state and its quantum Fisher information (QFI) via performing a unitary transformation. We find that the energy level crossing can occur in the quantum well system within the available parameters rather than in cavity and circuit quantum eletrodynamics systems. Futhermore, the influence of two kinds of SOCs on the QFI is investigated and an intuitive explanation from the viewpoint of the stationary perturbation theory is given.
description: 6 pages 3 figures
Wollea bharadwajae R. N. Singh 1942
Creators: name: Mcgregor, Glenn B.
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Bacteria
Cyanobacteria
Cyanobacteriia
Cyanobacteriales
Aphanizomenonaceae
Wollea
Wollea bharadwajae

description: Wollea bharadwajae R.N. Singh (1942: 593) Fig. 55 A–F.
Thallus macroscopic, cylindrical club-shaped when young, when mature a cluster of erect, tentacular, tube-like projections containing many trichomes, ± divaricated and variously branched, up to 8 cm long × 2.5 cm in diameter. Trichomes ± parallely arranged, straight or flexuous, clearly constricted at the cross walls, slightly narrowed towards the ends. Vegetative cells shortly barrel-shaped, 2.5–5.0 μm long × 3.5–5.0 μm broad; apical cells rounded and slightly conical. Heterocytes intercalary, spherical to barrel-shaped, 6.0–7.5 μm long × 5.8–7.0 μm broad. Akinetes spherical to sub-spherical, single or up to 3 in series, adjacent to the heterocytes, 10–13 μm long × 8–12 μm wide.
 Specimens examined:—Balonne Minor R. near Miegunyah, Bokhara R. at Woolerbilla-Hebel Rd, Condamine R. at Chinchilla Weir, Narran R. at Dirrandandi-Hebel Rd.
 Observations:—This species forms conspicuous, gelatinous, macroscopic colonies up to 15–20 cm in diameter, on the substratum of riverine waterholes in south-western Queensland; due to their size and complex shape, these colonies may be mistaken for prostrate aquatic macrophytes. Originally described from the benthos of ponds and paddy fields in India (Singh 1942).
description: Published as part of Mcgregor, Glenn B., 2018, Freshwater Cyanobacteria of North-Eastern Australia: 3. Nostocales, pp. 448-450 in Phytotaxa 359 (1) on pages 448-450, DOI: 10.11646/phytotaxa.359.1.1, http://zenodo.org/record/13704051
Closing the Information Gap: PIRE, a portable, open source information retrieval tool
Creators: name: Chen, Patrick
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2004
Subjects: Computer software
Information systems--Design
End-user searching
Application software--Development

description: In the world of Database Management, there are many tiers of complexity and financial expenditure that any one organization may choose to commit to the storage and manipulation of data. While Standards such as SQL have helped standardize the storage and retrieval of information, the ability of the user to access and manipulate data is an area of a great deal of customization and expense depending on the industry. As a result, while it can be relatively inexpensive to set up storage for a database, it can be very expensive and time consuming to create an user interface for the use of said data. This project seeks to create an open-source and easily configurable web interface for simple object-based research. With this tool, users should be able to quickly create a unique map for any individual database which will enable the script to provide easy and exhaustive research.
Accuracy of Capillary Glucose Testing in Gestational Diabetes Screening
Creators: name: Kongcharoensukying, Arisa
Publisher: name: PIMDEE Co., Ltd.
Year: 2018
Subjects: gestational diabetes
50-g glucose challenge test
venous plasma glucose
capillary glucose
accuracy

description: Thai Journal of Obstetrics and Gynaecology, 26, 3, 149-157
Step-like features on caloric effects of graphenes
Creators: name: Reis, M. S.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We considered a graphene nano-ribbon with a longitudinal electric field (along $x$ direction) and a transversal magnetic field (along $z$ direction), and then observe (i) the electrocaloric effect ruled by an applied magnetic field and (ii) the magnetocaloric effect ruled by an applied electric field. We focused our attention to the limit of low temperatures, and then observed interesting step-like features. For each filled Landau level $n$, created by the applied magnetic field, both caloric effects increase proportionally to $n+1/2$; and this step measures either important graphene properties (like Fermi velocity) or quantum fundamental quantities (like Planck constant and magnetic flux quantum).
Fundamentals of Cluster-Centric Content Placement in Cache-Enabled Device-to-Device Networks
Creators: name: Afshang, Mehrnaz
name: Dhillon, Harpreet S.
name: Chong, Peter Han Joo
Publisher: name: arXiv
Year: 2015
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: This paper develops a comprehensive analytical framework with foundations in stochastic geometry to characterize the performance of cluster-centric content placement in a cache-enabled device-to-device (D2D) network. Different from device-centric content placement, cluster-centric placement focuses on placing content in each cluster such that the collective performance of all the devices in each cluster is optimized. Modeling the locations of the devices by a Poisson cluster process, we define and analyze the performance for three general cases: (i)$k$-Tx case: receiver of interest is chosen uniformly at random in a cluster and its content of interest is available at the $k^{th}$ closest device to the cluster center, (ii) $\ell$-Rx case: receiver of interest is the $\ell^{th}$ closest device to the cluster center and its content of interest is available at a device chosen uniformly at random from the same cluster, and (iii) baseline case: the receiver of interest is chosen uniformly at random in a cluster and its content of interest is available at a device chosen independently and uniformly at random from the same cluster. Easy-to-use expressions for the key performance metrics, such as coverage probability and area spectral efficiency (ASE) of the whole network, are derived for all three cases. Our analysis concretely demonstrates significant improvement in the network performance when the device on which content is cached or device requesting content from cache is biased to lie closer to the cluster center compared to baseline case. Based on this insight, we develop and analyze a new generative model for cluster-centric D2D networks that allows to study the effect of intra-cluster interfering devices that are more likely to lie closer to the cluster center.
description: 16 pages, 10 figures. Submitted to IEEE Transactions on Communications
Red-shift parametrizations of dark energy and observational constraint on their parameters: Galileon gravity as background
Creators: name: Rudra, Prabir
name: Ranjit, Chayan
name: Kundu, Sujata
Publisher: name: arXiv
Year: 2015
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this work, FRW universe filled with dark matter (perfect fluid with negligible pressure) along with dark energy in the background of Galileon gravity is considered. Four dark energy models with different EoS parametrizations have been employed namely, Linear, CPL, JBP and Logarithmic parametrizations. From Stern, Stern+BAO and Stern+BAO+CMB joint data analysis, we have obtained the bounds of the arbitrary parameters $ω_{0}$ and $ω_{1}$ by minimizing the $χ^{2}$ test. The best-fit values and bounds of the parameters are obtained at 66\%, 90\% and 99\% confidence levels which are shown by closed confidence contours in the figures. For the logarithmic model unbounded confidence contours are obtained and hence the model parameters could not be finitely constrained. The distance modulus $μ$(z) against redshift $z$ has also been plotted for our predicted theoretical models for the best fit values of the parameters and compared with the observed Union2 data sample and SNe Type Ia 292 data and we have shown that our predicted theoretical models permits the observational data sets. From the data fitting it is seen that at lower redshifts $(z<0.3)$ the SNe Type Ia 292 data gives a better fit with our theoretical models compared to the Union2 data sample. So, from the data analysis, SNe Type Ia 292 data is the more favoured data sample over its counterpart given the present choice of free parameters. From the study, it is also seen that the logarithmic parametrization model is less supported by the observational data. Finally we have generated the plot for the deceleration parameter against the redshift parameter for all the theoretical models and compared the results with the work of Farooq et al, 2013.
description: 16 pages, 19 figures, Accepted for publication in Mod. Phys. Letts. A. arXiv admin note: substantial text overlap with arXiv:1406.3043, arXiv:1206.0507, arXiv:1304.6713
title: Sublingual dermoid cyst tracking down to the anterior neck in a child: A case report
Creators: name: Kandel, Kamal
Publisher: name: EURORAD
Year: 2023
Subjects: subject: Head & neck imaging
subject: Musculoskeletal system
subject: CT
subject: MR
subject: Ultrasound
subject: Clinical Cases

description: Clinical History: An 11-year-old child was brought to our hospital due to swelling in the anterior neck. The patient reported no symptoms other than the neck swelling. There was no history of trauma or surgery.

description: 11 years, male
Analgesic Effect of Lidocaine Spray during Endometrial Biopsy: A randomized controlled trial
Creators: name: Maneenuch  Sripha
Publisher: name: PIMDEE Co., Ltd.
Year: 2018
Subjects: endometrial biopsy
lidocaine spray
pain score
randomized controlled trial

description: Thai Journal of Obstetrics and Gynaecology, 26, 3, 190-197
MS Gr. class. c. 5 981
Creators: name: Oxyrhynchus Papyri
Publisher: name: University of Oxford
Year: 2023
Subjects: classificationCode: 470316
subject: Latin and classical Greek languages

description: P.Herc. 1149 col. 104sup. Epicurus, De natura 2
Drawing by Giuseppe Casanova
The relationship between task complexity, working memory and information search
Creators: name: Choi, Bogeum
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2018

description: In recent years, there has been growing interest in better understanding human actors in human information seeking behavior studies. Although a number of studies have been conducted to explore users’ individual differences in search behavior, there have been few studies taking both a theoretical and empirical approach to the relationship between users’ cognitive ability, task complexity and search interactions. The study presented in this paper evaluated the effect of task complexity and working memory in human information searching behavior. Twenty-four participants from a non-college-bound adolescents sample (ages 18-50+) performed two search tasks of varying levels of complexity and were administered measures of working memory. ANOVA tests revealed three important trends: (1) task complexity had a significant main effect on users’ perceptions about the task (i.e., temporal demand and level of satisfaction with time spent on the task), (2) working memory capacity had a significant main effect on users’ search behavior (i.e., queries, clicks, time until 1st click and time between search activities), and (3) a significant interaction effect was found for several search interaction measures (i.e., queries, clicks and time between search activities) and perceived level of temporal demand. Specifically, participants with high working memory capacity carried out more search activities at a faster pace and experienced less temporal workload. Taken together, these results suggest that task complexity and working memory capacity can have effects on users’ search behavior as well as their perceptions about the search experience.
Theory of anomalous optical properties of bulk Rashba conductor
Creators: name: Shibata, Junya
name: Takeuchi, Akihito
name: Kohno, Hiroshi
name: Tatara, Gen
Publisher: name: arXiv
Year: 2015
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: The Rashba interaction induced when inversion symmetry is broken in solids is a key interaction connecting spin and charge for realizing novel magnetoelectric cross-correlation effects. Here, we theoretically explore the optical properties of a bulk Rashba conductor by calculating the transport coefficients at finite frequencies. It is demonstrated that the combination of direct and inverse Edelstein effects leads to a softening of the plasma frequency for the electric field perpendicular to the Rashba field, resulting in a hyperbolic electromagnetic metamaterial. In the presence of magnetization, a significant enhancement of anisotropic propagation (directional dichroism) is predicted because of interband transition edge singularity.Based on an effective Hamiltonian analysis, the dichroism is demonstrated to be driven by toroidal and quadratic moments of the magnetic Rashba system. The effective theory of the cross-correlation effects has the same mathematical structure as that of insulating multiferroics.
description: 30 pages, 3 figures
title: „Weltrecht^2 Entourage Documents“ - A Standard for a Universal (Technology) Law Lecture (2018) [2023/01]
Creators: name: Schmid, Viola
Publisher: name: UNSPECIFIED
Year: 2022

description: The present “Entourage Document” is meant to complement the paper “Weltrecht^2 - Multidisciplinary constitutional law scholarship from Germany and the EU” and forms part of the cluster Weltrecht^2. In this Cylaw Report XXXXI are published for the first time and in this format: - the draft of a Teaching Standard (ST): „A Universal STANDARD for a (Technology) Law Lecture“, which seeks to pave the way to a new scientific discipline – CYBERSCIENCE (CySci). This “STANDARD” was first presented at the Internet Work in Progress conferences in 2017 and 2018. In this way, the cyber(law) scientific research system opens up on the level of teaching and learning; - the GLOBALMATRIX; - the Visual Legal Design of Weltrecht^2 (GALAXY metaphor) and - the Weltrecht^2 TAXONOMY as „Entourage Document“ in preparation of the paper to be submitted for the World Congress of Constitutional Law. - In addition, several articles published in the course of the past two decades will, for the first time, be presented in form of a „STEP LADDER“ chronology to exhibit the developing work on CYBERSCIENCE (and in Cyberlaw and AILAW) by an author with the veniae legendi (authority) to teach Public, European and Energy law („Herstory“).
Bridging Mechanistic and Phenomenological Models of Complex Biological Systems
Creators: name: Transtrum, Mark K.
name: Qiu, Peng
Publisher: name: arXiv
Year: 2015
Subjects: subject: Quantitative Methods (q-bio.QM)
subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: The inherent complexity of biological systems gives rise to complicated mechanistic models with a large number of parameters. On the other hand, the collective behavior of these systems can often be characterized by a relatively small number of phenomenological parameters. We use the Manifold Boundary Approximation Method (MBAM) as a tool for deriving simple phenomenological models from complicated mechanistic models. The resulting models are not black boxes, but remain expressed in terms of the microscopic parameters. In this way, we explicitly connect the macroscopic and microscopic descriptions, characterize the equivalence class of distinct systems exhibiting the same range of collective behavior, and identify the combinations of components that function as tunable control knobs for the behavior. We demonstrate the procedure for adaptation behavior exhibited by the EGFR pathway. From a 48 parameter mechanistic model, the system can be effectively described by a single adaptation parameter $τ$ characterizing the ratio of time scales for the initial response and recovery time of the system which can in turn be expressed as a combination of microscopic reaction rates, Michaelis-Menten constants, and biochemical concentrations. The situation is not unlike modeling in physics in which microscopically complex processes can often be renormalized into simple phenomenological models with only a few effective parameters. The proposed method additionally provides a mechanistic explanation for non-universal features of the behavior.
A study of the reading interests of high-ability readers in a North Carolina elementary school
Creators: name: Larsen, Ashley W.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1999
Subjects: Surveys--Children's reading
Children's reading--Gifted Children

description: This study describes a questionnaire survey of 21 fourth, fifth, and sixth grade students identified as high-ability readers in a central North Carolina school. The survey was conducted to determine the reading interests of high ability readers, their sources for reading materials, and their methods of selection. The study participants showed tremendous variety in their selection of reading material. They showed interest in books written both above and below their reading level, and in a wide range of genres. Fantasy and science fiction were popular genres for both boys and girls. Girls showed a strong interest in historical fiction. Most of the participants sought their reading material from home, the school library, and from bookstores, rarely using the classroom, the public library, or friends as a source for books. They preferred to select books independently, by browsing or searching on particular topics, rather than by relying on recommendations from parents, teachers, or librarians. Peer recommendations were also frequently used as a method of selection, even though the participants did not see reading as an activity valued by their friends.
MS Gr. class. c. 5 982
Creators: name: Oxyrhynchus Papyri
Publisher: name: University of Oxford
Year: 2023
Subjects: classificationCode: 470316
subject: Latin and classical Greek languages

description: P.Herc. 1149 col. 92sup. Epicurus, De natura 2
Drawing by Giuseppe Casanova
The Information Seeking Behavior of Successful Websleuths
Creators: name: Stokes, Lance
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2018

description: Websleuths are private citizens who spend their spare time using publicly available information usually found online in pursuit of finding the identity of previously unidentified bodies (UIBs). Typically, they seek to find matches between UIB and missing persons profiles found at online databases administered by government agencies and interested groups. However, in many cases the data listed on these databases are missing or incorrect. For this study, I interviewed seven websleuths who have successfully identified UIBs. The purpose of this study is to examine the information seeking behavior of this previously unstudied group as well as to understand how they successfully navigate unreliable information systems for an important purpose. The study results indicate that these cases are solved through dogged persistence and unique heuristics developed as a result of years of experience.
MS Gr. class. c. 5 983
Creators: name: Oxyrhynchus Papyri
Publisher: name: University of Oxford
Year: 2023
Subjects: classificationCode: 470316
subject: Latin and classical Greek languages

description: P.Herc. 1149 col. 119sup. Epicurus, De natura 2
Drawing by Giuseppe Casanova
Unveiling Vela - Time Variability of Na I D lines in the Direction of the Vela Supernova Remnant
Creators: name: Rao, N. Kameswara
name: Muneer, S.
name: Lambert, David L.
name: Varghese, B. A.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: High-resolution spectral profiles of Na I D lines from the interstellar medium towards 64 stars in the direction of the Vela supernova remnant are presented. This survey conducted mostly between 2011-12 complements an earlier survey of the same stars by Cha & Sembach done in the 1993-96 period. The interval of 15 to 18 years provides a base line to search for changes in the interstellar profiles. Dramatic disappearance of strong absorption components at low radial velocity is seen towards three stars - HD 63578, HD 68217, HD 76161 - over 15-18 years; HD 68217 and HD 76161 are associated with the Vela SNR but HD 63578 is likely associated with the wind bubble of g2 Velorum. The vanishing of these cold neutral clouds in the short time of 15 to 18 years needs some explanation. Other changes are seen in high-velocity Na D components.
description: 26 pages, 20 figures, 7 tables, accepted in MNRAS
Estimating the Date of Confinement: A 3-year retrospective study in Ramathibodi Hospital
Creators: name: Nattaporn Poopaibool
Publisher: name: PIMDEE Co., Ltd.
Year: 2018
Subjects: EDC
Estimated date of delivery
Naegele's rule
pregnancy wheel
pregnancy calculator application

description: Thai Journal of Obstetrics and Gynaecology, 26, 3, 166-174
NUT wormholes
Creators: name: Clément, Gérard
name: Gal'tsov, Dmitri
name: Guenouche, Mourad
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We show that supercritically charged black holes with NUT provide a new setting for traversable wormholes. This does not require exotic matter, a price being the Misner string singularities. Without assuming time periodicity to make Misner strings unobservable, we show that, contrary to expectations, geodesics do not stop there. Moreover, since there is no central singularity the space-time turns out to be geodesically complete. Another unpleasant feature of spacetimes with NUTs is the presence of regions where the azimuthal angle $φ$ becomes timelike, signalling the appearance of closed timelike curves (CTCs). We show that among them there are no closed timelike or null geodesics, so the freely falling observers should not encounter causality violations. Considering worldlines of charged particles, we find that, although these can become closed in the vicinity of the wormhole throat for large enough charge-to-mass ratio, the non-causal orbits are still disconnected from the distant zones. All these findings support our feeling that wormholes with NUTs deserve to be taken seriously. Integrating the geodesic equations completely, we demonstrate the existence of timelike and null geodesics connecting two asymptotic regions of the wormhole, such that the tidal forces in the throat are reasonably small. We discuss bounds on the NUT charge which follow from the Schwinger pair creation and ionization thresholds and speculate that such NUT wormholes could be present in some galactic centers.
description: Journal version. New references added, discussion part slightly modified
Electric field modulation of Schottky barrier height in graphene/MoSe2 van der Waals heterointerface
Creators: name: Sata, Yohta
name: Moriya, Rai
name: Morikawa, Sei
name: Yabuki, Naoto
name: Masubuchi, Satoru
name: Machida, Tomoki
Publisher: name: arXiv
Year: 2015
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We demonstrate a vertical field-effect transistor based on a graphene/MoSe2 van der Waals (vdW) heterostructure. The vdW interface between the graphene and MoSe2 exhibits a Schottky barrier with an ideality factor of around 1.3, suggesting a high-quality interface. Owing to the low density of states in graphene, the position of the Fermi level in the graphene can be strongly modulated by an external electric field. Therefore, the Schottky barrier height at the graphene/MoSe2 vdW interface is also modulated. We demonstrate a large current ON-OFF ratio of 10^5. These results point to the potential high performance of the graphene/MoSe2 vdW heterostructure for electronics applications.
description: 17 pages, 4 figures
Reduced Complexity Belief Propagation Decoders for Polar Codes
Creators: name: Lin, Jun
name: Xiong, Chenrong
name: Yan, Zhiyuan
Publisher: name: arXiv
Year: 2015
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: Polar codes are newly discovered capacity-achieving codes, which have attracted lots of research efforts. Polar codes can be efficiently decoded by the low-complexity successive cancelation (SC) algorithm and the SC list (SCL) decoding algorithm. The belief propagation (BP) decoding algorithm not only is an alternative to the SC and SCL decoders, but also provides soft outputs that are necessary for joint detection and decoding. Both the BP decoder and the soft cancelation (SCAN) decoder were proposed for polar codes to output soft information about the coded bits. In this paper, first a belief propagation decoding algorithm, called reduced complexity soft cancelation (RCSC) decoding algorithm, is proposed. Let $N$ denote the block length. Our RCSC decoding algorithm needs to store only $5N-3$ log-likelihood ratios (LLRs), significantly less than $4N-2+\frac{N\log_2N}{2}$ and $N(\log_2N+1)$ LLRs needed by the BP and SCAN decoders, respectively, when $N\geqslant 64$. Besides, compared to the SCAN decoding algorithm, our RCSC decoding algorithm eliminates unnecessary additions over the real field. Then the simplified SC (SSC) principle is applied to our RCSC decoding algorithm, and the resulting SSC-aided RCSC (S-RCSC) decoding algorithm further reduces the computational complexity. Finally, based on the S-RCSC decoding algorithm, we propose a corresponding memory efficient decoder architecture, which has better error performance than existing architectures. Besides, our decoder architecture consumes less energy on updating LLRs.
description: accepted by the IEEE 2015 workshop on signal processing systems (SiPS)
${\bar p}p$ annihilation into ${\bar D}D$ meson pair within an effective Lagrangian model
Creators: name: Shyam, R.
name: Lenske, H.
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We study the charmed meson pair (${\bar D}^0 D^0$ and $D^- D^+$) production in ${\bar p}p$ annihilation within an effective Lagrangian model that has only the baryon-meson degrees of freedom and involves the physical hadron masses. The reaction amplitudes include terms corresponding to the t-channel $Λ_c^+$, $Σ_c^+$ and $Σ_c^{++}$ baryon exchanges and the s-channel excitation, propagation and decay of the $Ψ$(3770) resonance into the charmed mesons. The initial- and final-state distortion effects have been accounted for by using a simple eikonal approximation-based procedure in the same way as was done in our previous study of the ${\bar p}p \to {\bar Λ}_c^-Λ_c^+$ reaction within a similar model. The ${\bar D}^0 D^0$ production reaction is dominated by the $Λ_c^+$ baryon exchange process, and the corresponding total cross sections are predicted to be in the range of 0.18 - 0.7 $μ$b for antiproton beam momenta varying between threshold and 20 $GeV/c$. The $Ψ$(3770) resonance contributions have a large influence on the differential cross sections of the $D^- D^+$ production reaction.
description: 23 pages, 10 figures, Journal Print version