cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Dreams in anxiety disorders and anxiety
Creators: name: Rimsh, Anton
name: Pietrowsky, Reinhard
Publisher: name: International Journal of Dream Research
Year: 2020

description: Anxiety disorders are one of the most common mental disorders nowadays. While anxiety disorders are a rather widely investigated group of mental disorders, study of dreams and dream content of people suffering from anxiety and anxiety disorders is relatively scant. Therefore, the present review serves to summarize and give a comprehensive and contemporary overview of the existing studies and research on the topic of relationship between dreams and anxiety and anxiety disorders. In addition, it might help to emphasize the necessity of broader and deeper research of this problem and further research and studies on the topic. It contains a survey of interrelations between dream content and dream disturbances and trait and state anxiety in non-clinical and clinical populations, between dream content and dream disturbances and anxiety disorders in clinical populations, and the relationships between nightmare distress and anxiety. It also provides a glimpse on the relationships between dreams and comorbid anxiety and depression and the influence of anxiety on dream recall frequency. In sum, the results show that due to the relatively low number of studies which deal with this topic and their relative inconsistency, the problem of these interrelations and connections is not extensively or comprehensively investigated and developed up to this day, while the findings on such relationships and associations still remain heterogeneous and diverse to a certain extent. Therefore, further deeper and more profound research and investigation of this particular topic is required and seems necessary.
description: International Journal of Dream Research, Vol 13, No 1 (April 2020)
Tools for Applying Constructability Concepts to Project Development (Design)
Creators: name: Stamatiadis, Nikiforos
name: Goodrum, Paul
name: Shocklee, Emily
name: Sturgill, Roy
name: Wang, Chen
Publisher: name: Kentucky Transportation Center, University of Kentucky
Year: 2013
Subjects: subject: Transportation Engineering

description: The purpose of this report is to document the activities of Phases I and II of the research effort and present the findings of the work accomplished. Phase I developed the Constructability Review Database for the Kentucky Transportation Cabinet and Phase II conducted a benefit analysis of the constructability review process. The database provides the basis for entry and collection of constructability reviews and allows for the identification of trends leading to potential improvements of the process. The database can be used to summarize activities, generate reports for a project, and be capable of quantifying the benefits from the process. The analysis documents the benefits of the reviews and recommends continuation and expansion to all projects.
Crystalline free energies of micelles of diblock copolymer solutions
Creators: name: D'Adamo, Giuseppe
name: Pierleoni, Carlo
Publisher: name: arXiv
Year: 2012
Subjects: subject: Computational Physics (physics.comp-ph)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We report a characterization of the relative stability and structural behavior of various micellar crystals of an athermal model of AB-diblock copolymers in solution. We adopt a previously devel- oped coarse-graining representation of the chains which maps each copolymer on a soft dumbbell. Thanks to this strong reduction of degrees of freedom, we are able to investigate large aggregated systems, and for a specific length ratio of the blocks f = MA/(MA + MB) = 0.6, to locate the order-disorder transition of the system of micelles. Above the transition, mechanical and thermal properties are found to depend on the number of particles per lattice site in the simulation box, and the application of a recent methodology for multiple occupancy crystals (B.M. Mladek et al., Phys. Rev. Lett. 99, 235702 (2007)) is necessary to correctly define the equilibrium state. Within this scheme we have performed free energy calculations at two reduced density ρ/ρ\ast = 4,5 and for several cubic structures as FCC,BCC,A15. At both densities, the BCC symmetry is found to correspond to the minimum of the unconstrained free energy, that is to the stable symmetry among the few considered, while the A15 structure is almost degenerate, indicating that the present sys- tem prefers to crystallize in less packed structures. At ρ/ρ\ast = 4 close to melting, the Lindemann ratio is fairly high (~ 0.29) and the concentration of vacancies is roughly 6%. At ρ/ρ\ast = 5 the mechanical stability of the stable BCC structure increases and the concentration of vacancies ac- cordingly decreases. The ratio of the corona layer thickness to the core radius is found to be in good agreement with experimental data for poly(styrene-b-isoprene)(22-12) in isoprene selective solvent which is also reported to crystallize in the BCC structure.
Inhalt
Creators: name: Redaktion, Die
Publisher: name: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Year: 2020

description: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege, Bd. 26 Nr. 1 (1973): Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Bei der Redaktion eingegangene Neuerscheinungen
Creators: name: Redaktion, Die
Publisher: name: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Year: 2020

description: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege, Bd. 26 Nr. 2 (1973): Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
ERTIM@MC2: Diversified Argumentative Tweets Retrieval
Creators: name: Deturck, Kévin
name: Goswami, Parantapa
name: Nouvel, Damien
name: Segond, Frédérique
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: In this paper, we present our participation to CLEF MC2 2018 edition for the task 2 Mining opinion argumentation. It consists in detecting the most argumentative and diverse Tweets about some festivals in English and French from a massive multilingual collection. We measure argumentativity of a Tweet computing the amount of argumentation compounds it contains. We consider argumentation compounds as a combination between opinion expression and its support with facts and a particular structuration. Regarding diversity, we consider the amount of festival aspects covered by Tweets. An initial step filters the original dataset to fit the language and topic requirements of the task. Then, we compute and integrate linguistic descriptors to detect claims and their respective justifications in Tweets. The final step extracts the most diverse arguments by clustering Tweets according to their textual content and selecting the most argumentative ones from each cluster. We conclude the paper describing the different ways we combined the descriptors among the different runs we submitted and discussing their results.
Gamma-irradiation influence on the initial magnetic conductivity of based on the system Fe-Si-B amorphous and nanocrystalline alloys
Creators: name: Povarchuk, V. Yu.
name: Nosenko, V. K.
name: Kraitchinskii, A. M.
name: Neimash, V. B.
name: Kras'ko, M. M.
name: Maslov, V. V.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The dependence of initial magnetic permeability μi of based on the Fe-Si-B amorphous and nanocrystalline alloys on the γ-irradiation dose was investigated by the method of inductance factor determination. It was determined that the alloying of amorphous Fe-Si-B alloys by nickel and molybdenum increases the radiation sensitivity of the μi. Initial magnetic permeability of nanocrystalline magnetic alloys is less sensitive to the action of γ-irradiation as compared with the alloyed amorphous alloys. Has been suggested that radiation influence on the initial magnetic permeability are caused by creation of non-magnetic incorporation in structure of amorphous alloys as well as amorphous matrix of nanocrystalline alloys.
description: (5 pages, 4 figures, 2 tables); (http://www.ujp.bitp.kiev.ua)
QED vacuum nonlinearity in Laguerre-Gauss beams
Creators: name: Dumlu, Cesim K.
name: Nakamiya, Yoshihide
name: Tanaka, Kazuo A.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We investigate in detail the stimulated photon emission in pulse-shaped Laguerre-Gauss beams of arbitrary mode decomposition within the framework of Euler-Heisenberg effective theory. We elaborate on the analytic structure of the photon emission amplitude and identify its dominant and sub-dominant parts by analyzing each signature's phase scaling. We identify three distinct nonlinear signatures: the orbital angular momentum (OAM) flip ($\ell:1 \rightarrow -1$) , higher harmonic generation ($\ell:1 \rightarrow 2$) and harmonic reduction ($\ell:1 \rightarrow 0$). We estimate signal photon yield for each signature under various pulse collision scenarios we explain in detail. We also outline a prospective experimental setup that may probe these signatures.
Updating the Kentucky Contract Time Determination System
Creators: name: Taylor, Timothy R. B.
name: Goodrum, Paul
name: Brockman, Michael
name: Bishop, Barry
name: Shan, Yongwei
name: Sturgill, Roy E.
name: Hout, Kevin
Publisher: name: Kentucky Transportation Center, University of Kentucky
Year: 2013
Subjects: subject: Transportation Engineering

description: The Federal Highway Administration requires State Transportation Agencies to have a formal method to estimate contract time for highway construction projects. To meet this requirement many states use an integrated scheduling system to estimate project durations based on assumed productivity rates and generic job logic. The current work investigated the accuracy of two of these systems found that both systems accuracy in predicting the duration of Kentucky Transportation Cabinet projects was greater than +200%. In response to this poor accuracy, a parametric project duration estimating tool was developed based on a multivariate regression analysis of bid item quantities and engineering and construction estimate. Five regression models were develop to estimate contract time for large projects (great than $1,000,000) based on key bid item quantities; limited access (+22% median error), open access (+35% median error), new route (+55% median error), bridge rehabilitation (+77% median error), and bridge replacement(+17% median error). It was not possible to develop a parametric estimating tool for predicting the duration of small projects (less than $1,000,000) as it appears that the duration of small projects is determined by factors outside of bid item quantities.
Theoretische Behandlung der gegenseitigen Beeinflussung zweier unendlich langer Kreiszylinder beim Begegnen bzw. Überholen in unbeschränktem Wasser
Creators: name: Collatz, Günter
Publisher: name: TUHH Universitätsbibliothek
Year: 1960
Subjects: subject: Zylinderströmung
subject: Begegnung
classificationCode: 52.00
subject: Maschinenbau, Energietechnik, Fertigungstechnik: Allgemeines

description: Theoretische Behandlung der gegenseitigen Beeinflussung zweier unendlich langer Kreiszylinder beim Begegnen bzw. Überholen in unbeschränktem Wasser
The role of jets in exploding supernovae and in shaping their remnants
Creators: name: Soker, Noam
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: I review studies of core collapse supernovae (CCSNe) and similar transient events that attribute major roles to jets in powering most CCSNe and in shaping their ejecta. I start with reviewing the jittering jets explosion mechanism that I take to power most CCSN explosions. Neutrino heating does play a role in boosting the jets. I compare the morphologies of some CCSN remnants to planetary nebulae to conclude that jets and instabilities are behind the shaping of their ejecta. I then discuss CCSNe that are descendants of rapidly rotating collapsing cores that result in fixed-axis jets (with small jittering) that shape bipolar ejecta. A large fraction of the bipolar CCSNe are superluminous supernovae (SLSNe). I conclude that modelling of SLSNe lightcurves and bumps in the lightcurves must include jets, even when considering energetic magnetars and/or ejecta interaction with the circumstellar matter (CSM). I connect the properties of bipolar CCSNe to common envelope jets supernovae (CEJSNe) where an old neutron star or a black hole spirals-in inside the envelope and then inside the core of a red supergiant. I discuss how jets can shape the pre-explosion CSM, as in supernova 1987A, and can power pre-explosion outbursts (precursors) in binary systems progenitors of CCSNe and CEJSNe. Binary interaction facilitate also the launching of post-explosion jets.
description: Research in Astronomy and Astrophysics, 22, 122003 (2022)
What Are Those Tiny Things? A First Study of Compact Star Clusters in the SMACS0723 Field with JWST
Creators: name: Faisst, Andreas L.
name: Chary, Ranga Ram
name: Brammer, Gabriel
name: Toft, Sune
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We use the unprecedented resolution and depth of the JWST NIRCam Early Release Observations at 1-5 $μ$m to study the stellar mass, age, and metallicity of compact star clusters in the neighborhood of the host galaxies in the SMACS J0723.3-7327 galaxy cluster field at z = 0.39. The measured colors of these star clusters show a similar distribution as quiescent galaxies at the same redshift, but are >3 magnitudes fainter than the current depths of wide-field galaxy survey. The star clusters are unresolved in the NIRCam/F150W data suggesting sizes smaller than 50pc. This is significantly smaller than star forming clumps or dwarf galaxies in local galaxies. From fitting their photometry with simple stellar population (SSP) models, we find stellar metallicities consistent with 0.2-0.3 $Z_{\odot}$ and ages of $1.5^{+0.5}_{-0.5}$ Gyrs. We rule out metallicities <0.2 $Z_{\odot}$ and solar/super-solar at 4$σ$ significance. Assuming mass-to-light ratios obtained from the best-fit SSPs, we estimate stellar masses of $2.4^{+3.0}_{-1.5}\times10^6$ M$_{\odot}$. These are between average masses of local globular clusters and dwarf galaxies. Our analysis suggests middle-aged globulars with relatively recent formation times at z=0.5-0.7, which could have been subsequently stripped away from their host galaxies due to interactions in the cluster environment, or formed in cold flows onto the cluster core. However, we cannot rule out these objects being compact cores of stripped dwarf galaxies.
description: 20 pages, 8 figures, 2 tables. Accepted for publication in ApJ
Properties of the giant HII regions and bar in the nearby spiral galaxy NGC5430
Creators: name: Brière, É.
name: Cantin, S.
name: Spekkens, K.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: In order to better understand the impact of the bar on the evolution of spiral galaxies, we measure the properties of giant HII regions and the bar in the SB(s)b galaxy NGC5430. We use two complementary data sets, both obtained at the Observatoire du Mont-Mégantic: a hyperspectral data cube from the imaging Fourier transform spectrograph SpIOMM, and high-resolution spectra across the bar from a long-slit spectrograph. We flux-calibrate SpIOMM spectra for the first time, and produce Hα and [NII]λ6584Å intensity maps from which we identify 51 giant HII regions in the spiral arms and bar. We evaluate the type of activity, the oxygen abundance and the age of the young populations contained in these giant HII regions and in the bar. Thus, we confirm that NGC5430 does not harbour a strong AGN, and that its Wolf-Rayet knot shows a pure HII region nature. We find no variation in abundance or age between the bar and spiral arms, nor as a function of galactocentric radius. These results are consistent with the hypothesis that a chemical mixing mechanism is at work in the galaxy's disc to flatten the oxygen abundance gradient. Using the starburst99 model, we estimate the ages of the young populations, and again find no variations in age between the bar and the arms or as a function of radius. Instead, we find evidence for two galaxy-wide waves of star formation, about 7.1 Myr and 10.5 Myr ago. While the bar in NGC5430 is an obvious candidate to trigger these two episodes, it is not clear how the bar could induce widespread star formation on such a short time-scale.
description: 14 pages, 9 figures, 3 tables, accepted for publication in MNRAS
Controlled Quantum Teleportation in the Presence of an Adversary
Creators: name: Gangopadhyay, Sayan
name: Wang, Tiejun
name: Mashatan, Atefeh
name: Ghose, Shohini
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present a device independent analysis of controlled quantum teleportation where the receiver is not trusted. We show that the notion of genuine tripartite nonlocality allows us to certify control power in such a scenario. By considering a specific adversarial attack strategy on a device characterized by depolarizing noise, we find that control power is a monotonically increasing function of genuine tripartite nonlocality. These results are relevant for building practical quantum communication networks and also shed light on the role of nonlocality in multipartite quantum information processing.
Top Quark Production Measurements at ATLAS
Creators: name: Calkins, Robert
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: An overview of top quark production measurements using the ATLAS detector at the LHC is presented. Using 35 pb^-1 of data, we measured the ttbar cross-section in the lepton+jets channel to 13% precision and set limits on the cross-section for the all hadronic decay channel. The measurement in the dilepton channel was performed using 0.70 fb^-1 of data and was combined with the lepton+jets channel result for our most precise ttbar cross-section measurement of σ(ttbar+X) =176 +- 5(stat) +13 -10 (syst) +-7(lumi). Single top production was also measured in the t-channel using 0.70 fb^-1 of data.
description: 3 pages + references, 3 figures, Contribution to the proceedings of the PANIC2011 conference
Study of accretion flows around an ultraluminous X-ray source M82 X-1 using NuSTAR data
Creators: name: Mondal, Santanu
name: Palit, Biswaraj
name: Chakrabarti, Sandip K.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We study the spectral properties and accretion flow behavior of an ultraluminous X-ray source M82\,X-1 using {\it NuSTAR} observations. We use the physical two component advective flow (TCAF) model to fit the data and to derive the accretion flow properties of the source. From the model fitted parameters, we found that M82\,X-1 is harboring an intermediate mass black hole at its centre, where the mass varies from $156.04^{+13.51}_{-15.30}$ to $380.96^{28.38}_{-29.76}$ M$_\odot$. The error weighted average mass of the black hole is $273\pm43$ M$_\odot$, which accreted in nearly super-Eddington rate. The Compton cloud was compact with a size of $\sim13 r_g$ and the shock compression ratio had \textcolor{black}{nearly intermediate values except for the epoch four}. These indicate a possible significant mass outflow from the inner region of the disk. The quasi periodic oscillation (QPO) frequencies estimated from the model fitted parameters can reproduce the observed QPOs. The robustness of the model parameters is verified by drawing the confidence contours among them.
description: 9 pages, 4 figures, accepted (20/06/2022) for publication in Journal of Astrophysics and Astronomy (JAA)
Persistent dynamics in the S=1/2 quasi-one-dimensional chain compound Rb4Cu(MoO4)3 probed with muon-spin relaxation
Creators: name: Lancaster, T.
name: Baker, P. J.
name: Pratt, F. L.
name: Blundell, S. J.
name: Hayes, W.
name: Prabhakaran, D.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We report the results of muon-spin relaxation measurements on the low-dimensional antiferromagnet Rb4Cu(MoO4)3. No long-range magnetic order is observed down to 50 mK implying a ratio T_N/J<0.005 (where J is the principal exchange strength along the spin chains) and an effective ratio of interchain to intrachain exchange of |J_perp/J|<2 x 10^-3, making the material an excellent realization of a one-dimensional quantum Heisenberg antiferromagnet. We probe the persistent spin excitations at low temperatures and find that ballistic spin transport dominates the excitations detected below 0.3 K.
description: 4 pages, 3 figures
Nonphononic spectrum of two-dimensional structural glasses
Creators: name: Lerner, Edan
name: Bouchbinder, Eran
Publisher: name: arXiv
Year: 2022
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: The scaling form and system-size dependence of the low-frequency wing of the nonphononic vibrational spectrum of two-dimensional structural glasses have been debated in recent literature. Here we provide numerical evidence that the prefactor $A_{\rm g}$ of the low-frequency nonphononic vibrational spectrum -- the latter grows from zero frequency ($ω\!=\!0$) as $A_{\rm g}ω^β$ -- is system-size dependent, and that the exponent $β$ exhibits a similar glass-formation-protocol and system-size dependence as seen in three-dimensional structural glasses.
description: 3 pages, 2 figure (expanded data set & additional figure with rescaled cumulative distributions)
One-Class SVM on siamese neural network latent space for Unsupervised Anomaly Detection on brain MRI White Matter Hyperintensities
Creators: name: Pinon, Nicolas
name: Trombetta, Robin
name: Lartizien, Carole
Publisher: name: arXiv
Year: 2023
Subjects: subject: Image and Video Processing (eess.IV)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Anomaly detection remains a challenging task in neuroimaging when little to no supervision is available and when lesions can be very small or with subtle contrast. Patch-based representation learning has shown powerful representation capacities when applied to industrial or medical imaging and outlier detection methods have been applied successfully to these images. In this work, we propose an unsupervised anomaly detection (UAD) method based on a latent space constructed by a siamese patch-based auto-encoder and perform the outlier detection with a One-Class SVM training paradigm tailored to the lesion detection task in multi-modality neuroimaging. We evaluate performances of this model on a public database, the White Matter Hyperintensities (WMH) challenge and show in par performance with the two best performing state-of-the-art methods reported so far.
Development of knowledge Base Expert System for Natural treatment of Diabetes disease
Creators: name: Jha, Sanjeev Kumar
Publisher: name: arXiv
Year: 2012
Subjects: subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: The development of expert system for treatment of Diabetes disease by using natural methods is new information technology derived from Artificial Intelligent research using ESTA (Expert System Text Animation) System. The proposed expert system contains knowledge about various methods of natural treatment methods (Massage, Herbal/Proper Nutrition, Acupuncture, Gems) for Diabetes diseases of Human Beings. The system is developed in the ESTA (Expert System shell for Text Animation) which is Visual Prolog 7.3 Application. The knowledge for the said system will be acquired from domain experts, texts and other related sources.
Multi-mode Dynamics of Terahertz Quantum Cascade Lasers: spontaneous and actively induced generation of dense and harmonic coherent regimes
Creators: name: Silvestri, Carlo
name: Qi, Xiaoqiong
name: Taimre, Thomas
name: Rakić, Aleksandar D.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Optics (physics.optics)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: We present an extended study concerning the dynamics of dense and harmonic coherent regimes in quantum cascade lasers (QCLs) in a Fabry--Perot (FP) configuration emitting in the terahertz (THz) spectral region. Firstly, we study the device in free running operation, reproducing the main features of the self-generated of optical frequency combs (OFCs) and harmonic frequency combs (HFCs) in this spectral range, commenting on the points of difference from the mid-infrared region, and finding excellent agreement with the most recent experimental evidences. Then, we analyze the THz-QCL dynamics under radiofrequency (RF) injection, with a focus on the effect of the modulation of the current on the degree of locking of the system, and we perform a systematic investigation aimed to provide a procedure for the generation of train of pulses with short duration and high contrast. Furthermore, we extend our study to the generation of sequences of pulses with repetition frequency which is a multiple of the free-spectral range (FSR) of the laser cavity, reproducing harmonic mode-locking (HML) of the laser, a method which has been recently demontrated in experiments with THz-QCLs, and the results of which are particulary promising for a large stream of applications, ranging from optical communication to imaging.
2012 Safety Belt Usage Survey in Kentucky
Creators: name: Agent, Kenneth R.
name: Green, Eric R.
Publisher: name: Kentucky Transportation Center, University of Kentucky
Year: 2012
Subjects: subject: Transportation Engineering

description: The objective of this study was to establish 2012 safety belt and child safety seat usage rates in Kentucky. The 2012 survey continues to document the results after enactment of the original “secondary enforcement” statewide mandatory safety belt law in 1994 and the subsequent change to “primary enforcement” which was enacted in 2006. Data were collected at 160 randomly selected sites in 18 counties across Kentucky. Data from the individual sites were combined into a statewide percentage considering roadway functional classification, county and vehicle miles traveled.
Electrically detected spin echoes of donor nuclei in silicon
Creators: name: McCamey, D. R.
name: Boehme, C.
name: Morley, G. W.
name: van Tol, J.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The ability to probe the spin properties of solid state systems electrically underlies a wide variety of emerging technology. Here, we extend electrical readout of the nuclear spin states of phosphorus donors in silicon to the coherent regime with modified Hahn echo sequences. We find that, whilst the nuclear spins have electrically detected phase coherence times exceeding 2 ms, they are nonetheless limited by the artificially shortened lifetime of the probing donor electron.
description: 10 pages, 3 figures
Zero-field thermopower of a thin heterostructure membrane with a 2D electron gas
Creators: name: Schmidt, M.
name: Schneider, G.
name: Heyn, Ch.
name: Stemmann, A.
name: Hansen, W.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study the low-temperature thermopower of micron sized, free-standing membranes containing a two-dimensional electron system. Suspended membranes of 320 nm thickness including a high electron mobility structure in Hall bar geometry of 34 μm length are prepared from GaAs/AlGaAs heterostructures grown by molecular beam epitaxy. Joule heating on the central region of the membrane generates a thermal gradient with respect to the suspension points where the membrane is attached to cold reservoirs. Temperature measurements on the membrane reveal strong thermal gradients due to the low thermal conductivity. We measure the zero-field thermopower and find that the phonon-drag contribution is suppressed at low temperatures up to 7 K.
description: 5 pages
Forum_2021_Vision_based_landing_ver3_compressed.pdf
Creators: name: Shastry, Abhishek
Publisher: name: figshare
Year: 2021
Subjects: subject: Aerospace Engineering
subject: FOS: Mechanical engineering
subject: 90199 Aerospace Engineering not elsewhere classified

description: This paper describes the development of avionics and control systems, followed by flight demonstration for vision-based landing of a multirotor UAS on a moving platform replicating a ship-deck. The UAS is a quadrotor designed and fabricated in-house with an integrated avionics package developed for autonomous vision-based navigation. A monocular camera is used for detection and pose estimation of a moving platform. The platform replicates ship-deck motion using six degrees of freedom capable of oscillatory motions upto 10 cm in linear and 30 degrees in angular amplitude with speeds upto 50 cm/s. Ship-deck motions of progressively increasing intensity were obtained from ONR and simulated using the moving platform to understand the problems involved in estimation and tracking of large stochastic motions. Results were verified with an independent Vicon system. The key conclusion is that it is possible to track a moving ship-deck with vision alone. Indeed vision based ship-deck position estimation was found to be near perfect with errors of 1-2 cm. Ship-deck tracking shows a phase lag error that increases with increasing frequency of ship-deck motion. It was found that this error can be decreased by estimating ship-deck's velocity and using it as a feedback in tracking controller.… Read more
Design and Validation of an Open-Source Closed-Loop Testbed for Artificial Pancreas Systems
Creators: name: Zhou, Xugui
name: Kouzel, Maxfield
name: Ren, Haotian
name: Alemzadeh, Homa
Publisher: name: arXiv
Year: 2022
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: The development of a fully autonomous artificial pancreas system (APS) to independently regulate the glucose levels of a patient with Type 1 diabetes has been a long-standing goal of diabetes research. A significant barrier to progress is the difficulty of testing new control algorithms and safety features, since clinical trials are time- and resource-intensive. To facilitate ease of validation, we propose an open-source APS testbed by integrating APS controllers with two state-of-the-art glucose simulators and a novel fault injection engine. The testbed is able to reproduce the blood glucose trajectories of real patients from a clinical trial conducted over six months. We evaluate the performance of two closed-loop control algorithms (OpenAPS and Basal Bolus) using the testbed and find that more advanced control algorithms are able to keep blood glucose in a safe region 93.49% and 79.46% of the time on average, compared with 66.18% of the time for the clinical trial. The fault injection engine simulates the real recalls and adverse events reported to the U.S. Food and Drug Administration (FDA) and demonstrates the resilience of the controller in hazardous conditions. We used the testbed to generate 25 years of synthetic data representing 20 different patient profiles with realistic adverse event scenarios, which would have been expensive and risky to collect in a clinical trial. The proposed testbed is a valid tool that can be used by the research community to demonstrate the effectiveness of different control algorithms and safety features for APS.
description: 12 pages, 12 figures, in the IEEE/ACM International Conference on Connected Health: Applications, Systems and Engineering Technologies (CHASE), 2022
Heliograph of the UTR-2 Radio Telescope
Creators: name: Stanislavsky, Aleksander
name: Koval, Artem
name: Konovalenko, Aleksander
name: Abranin, Eduard
Publisher: name: arXiv
Year: 2011
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: The broadband analog-digital heliograph based on the UTR-2 radio telescope is described in detail. This device operates by employing the parallel-series principle when five equi-spaced array pattern beams which scan the given radio source (e.g. solar corona) are simultaneously shaped. As a result, the obtained image presents a frame of 5 x 8 pixels with the space resolution 25' x 25' at 25 MHz. Each pixel corresponds to the signal from the appropriate pattern beam. The most essential heliograph component is its phase shift module for fast sky scanning by pencil-shape antenna beams. Its design, as well as its switched cable lengths calculation procedure, are presented, too. Each heliogram is formed in the actual heliograph just by using this phase shifter. Every pixel of a signal received from the corresponding antenna pattern beam is the cross-correlation dynamic spectrum (time-frequency-intensity) measured in real time with the digital spectrum processor. This new generation heliograph gives the solar corona images in the frequency range 8-32 MHz with the frequency resolution 4 kHz, time resolution to 1 ms, and dynamic range about 90 dB. The heliographic observations of radio sources and solar corona made in summer of 2010 are demonstrated as examples.
description: 48 pages, 9 figures, 2 tables
Distributional versions of Littlewood's Tauberian theorem
Creators: name: Estrada, Ricardo
name: Vindas, Jasson
Publisher: name: arXiv
Year: 2012
Subjects: subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: Primary 40E05, 40G10, 44A10, 46F12. Secondary 40G05, 46F20

description: We provide several general versions of Littlewood's Tauberian theorem. These versions are applicable to Laplace transforms of Schwartz distributions. We apply these Tauberian results to deduce a number of Tauberian theorems for power series where Cesàro summability follows from Abel summability. We also use our general results to give a new simple proof of the classical Littlewood one-sided Tauberian theorem for power series.
description: 15 pages
Development and Deployment of Aluminum Bridge Decks
Creators: name: Choo, Ching Chiaw
name: Peiris, Abheetha
name: Harik, Issam E.
Publisher: name: Kentucky Transportation Center, University of Kentucky
Year: 2012
Subjects: subject: Transportation Engineering

description: This report contains the analysis and retrofit of a steel truss bridge on KY 974 over Howard Creek in Clark County, Kentucky. The bridge had major corrosion and damage to the steel stringers, along with cracking and leaching occurring in the concrete bridge deck. The retrofit involves the replacement of the corroded steel stringers and the damaged concrete bridge deck. The original concrete deck was removed and replaced by light-weight high-strength aluminum deck panels. The aluminum deck panels, each 2-m wide, were assembled at the site and connected to each other and to the bottom steel stringers using special clamps and connectors. Following the new deck installation, the top surface was waterproofed and a new asphalt overlay was placed. The new bridge deck constructed of aluminum material significantly reduces the deck weight, while it also allows rapid construction due to prefabricated components. In addition, the new deck can now carry a HS20-44 truck weight, which the old concrete deck was not designed to carry.
Evolution of the spectral curvature in the ULX Holmberg II X-1
Creators: name: Kajava, J. J. E.
name: Poutanen, J.
name: Farrell, S. A.
name: Grisé, F.
name: Kaaret, P.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Ultraluminous X-ray sources (ULXs) are interesting systems as they can host intermediate mass black holes. Alternatively, ULXs can represent stellar-mass black holes accreting at super-Eddington rates. Recently spectral curvature or breaks at energies above a few keV have been detected in high quality ULX spectra. These spectral features have been taken as evidence against the intermediate-mass black hole case. In this paper, we report on a new XMM-Newton observation of the ULX Holmberg II X-1 that also shows a clear spectral break at approximately 4 keV. This observation was performed during a low luminosity state of the system and by comparing this new data to a high luminosity state XMM-Newton observation, we can conclude that the spectral break energy increases with luminosity. This behaviour is different to a ULX in the Holmberg IX galaxy,where an opposite trend between the luminosity and the spectral break energy has been claimed. We discuss mechanisms that could explain this complex behaviour.
description: 7 pages, 3 figures and 2 tables. Accepted for publication in MNRAS
Linear independence of time-frequency translates of functions with faster than exponential decay
Creators: name: Bownik, Marcin
name: Speegle, Darrin
Publisher: name: arXiv
Year: 2012
Subjects: subject: Functional Analysis (math.FA)
subject: FOS: Mathematics

description: We establish the linear independence of time-frequency translates for functions $f$ having one sided decay $\lim_{x\to \infty} |f(x)| e^{cx \log x} = 0$ for all $c>0$. We also prove such results for functions with faster than exponential decay, i.e., $\lim_{x\to \infty} |f(x)| e^{cx} = 0$ for all $c>0$, under some additional restrictions.
Simulation of multi-shell fullerenes using Machine-Learning Gaussian Approximation Potential
Creators: name: Ugwumadu, C.
name: Nepal, K.
name: Thapa, R.
name: Lee, Y. G.
name: Majali, Y. Al
name: Trembly, J.
name: Drabold, D. A.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: Multi-shell fullerenes "buckyonions" were simulated, starting from initially random configurations, using a density-functional-theory (DFT)-trained machine-learning carbon potential within the Gaussian Approximation Potential (ML-GAP) Framework [Volker L. Deringer and Gabor Csanyi, Phys. Rev. B 95, 094203 (2017)]. A large set of such fullerenes were obtained with sizes ranging from 60 ~ 3774 atoms. The buckyonions are formed by clustering and layering starts from the outermost shell and proceed inward. Inter-shell cohesion is partly due to interaction between delocalized $π$ electrons into the gallery. The energies of the models were validated ex post facto using density functional codes, VASP and SIESTA, revealing an energy difference within the range of 0.02 - 0.08 eV/atom after conjuagte gradient energy convergence of the models were achieved with both methods.
Kentucky Safety Belt Methodology
Creators: name: Agent, Kenneth R.
name: Green, Eric R.
name: Langley, Ronald E.
Publisher: name: Kentucky Transportation Center, University of Kentucky
Year: 2012
Subjects: subject: Transportation Engineering

description: The National Highway Traffic Safety Administration (NHTSA) has issued new Uniform Criteria for State Observational Surveys of Seat Belt Use. The final rule was published in Federal Register Volume 76, Number 63. Following is a summary of the methodology Kentucky will use to comply with the criteria described in the final rule. The methodology considers the experience of the past 30 years of safety belt data collection in Kentucky along with the guidelines contained in the final rule. The new methodology will be implemented beginning with the 2013 statewide survey.
Investigating the Sequence Variation in E2-Binding Domain of HPV16 and Biological Function Evaluation in Tunisian Cervical Cancers
Creators: name: Saloua Kahla
name: Kochbati, Lotfi
name: Hammami, Samia
name: Chanoufi, Mohamed Badis
name: Mongi Maalej
name: Oueslati, Ridha
Publisher: name: Zenodo
Year: 2021
Subjects: HPV16
E2variant
E6-E7
Cervical Tunisian Cancer

description: Infection with hr-HPV (High-risk types of the human papillomaviruses) is a necessary but not sufficient cause of invasive cervical cancer, with additional virus-host interactions needed for cancer to develop. HPV16 E2 variants have different effects on the transcriptional activity of the LCR. In this study, we examined the nucleotide and amino acid sequence variation within the HPV16 E2 gene and to correlate with disease progression. E2 gene disruption was detected by PCR amplification of the entire E2 gene using a single set of primers. Nucleotide variations were analyzed by bidirectional sequencing. mRNA expression patterns of E6 and E7 gene transcripts were evaluated by a reverse transcriptase-PCR method (RT-PCR). The detection of intact E2 genes was significantly higher among controls than cases (81.8% versus 37.5%, resp., < 0.05). Among the E subgroup, variation at position 3684 C>A results in the amino acid substitution T310K and was more common among the E2 undisrupted cases (7/9; 77.7%), compared to controls (2/9; 22.2%). In addition, specific sequence variations identified in the E2 ORF at positions 3684 C>A were associated with increased viral oncogenes E6-E7 production. Besides HPV16 E2 disruption, the 3684 C>A variation within undisrupted E2 genes could be involved in an alternative mechanism for deregulating the expression of the HPV16 E6 and E7 oncogenes and appears to be a major factor contributing to the development of cervical cancer in Tunisian women. The study would provide valuable information, as the level of the HPV16 E6-E7 transcripts and the detection of E2 mutations, with DNA physical state detection, could serve as an additional mechanism for evaluating risk for the development of cervical carcinoma.
Rapid multiplex ultrafast nonlinear microscopy for material characterization
Creators: name: Purz, Torben L.
name: Hipsley, Blake T.
name: Martin, Eric W.
name: Ulbricht, Ronald
name: Cundiff, Steven T.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Optics (physics.optics)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We demonstrate rapid imaging based on four-wave mixing (FWM) by assessing the quality of advanced materials through measurement of their nonlinear response, exciton dephasing, and exciton lifetimes. We use a WSe$_2$ monolayer grown by chemical vapor deposition as a canonical example to demonstrate these capabilities. By comparison, we show that extracting material parameters such as FWM intensity, dephasing times, excited state lifetimes, and distribution of dark/localized states allows for a more accurate assessment of the quality of a sample than current prevalent techniques, including white light microscopy and linear micro-reflectance spectroscopy. We further discuss future improvements of the ultrafast FWM techniques by modeling the robustness of exponential decay fits to different spacing of the sampling points. Employing ultrafast nonlinear imaging in real-time at room temperature bears the potential for rapid in-situ sample characterization of advanced materials and beyond.
Funding Liquidity Risk in Ghanaian Microfinance Institutions (MFI's)
Creators: name: Boohene, David
name: Maxwell, Amita
name: Santhana Lakshmi, K.
name: Anima Aboagye, Alice
name: Singh, Pratibha
Publisher: name: figshare
Year: 2023
Subjects: Financial economics
Finance

description: The paper presents an objective insight into the liquidity challenges faced by MFI’s in Ghana and proposes ways to manage it. It provides an impetus for financial institutions to critically examine their funding performance throughout the year. The survey goes further to reveal that the selected Microfinance Institutions do not conduct periodic evaluation on their financial capabilities to meet the obligations and needs of their customers in terms of readily providing loans and other credit instruments throughout the year. This is because clients make huge withdrawals in the last quarter of the year thus causing a liquidity concentration risk during such periods. Further, the paper suggests that the introduction of viable and innovative products into the market by the various Microfinance institutions coupled with a selective review of prices of products that are doing well in the market is likely to address the funding of the liquidity lapses in Ghanaian Microfinance Institutions. The two processes should however be underpinned by a technological based led monitoring and periodic liquidity trend analysis as it can have an attractive profit augmentation opportunity accessible for the sustainability of MFI’s.
2012 Driver Attitudes and Awareness Survey
Creators: name: Agent, Kenneth R.
name: Green, Eric R.
name: Langley, Ronald E.
Publisher: name: Kentucky Transportation Center, University of Kentucky
Year: 2012
Subjects: subject: Transportation Engineering

description: A basic set of questions were developed that could be used in periodic surveys that track drivers attitudes and awareness concerning impaired driving, seat belt use, and speeding issues. The objective of the survey was to learn the knowledge, views, and behaviors of drivers in these areas. This report documents the results of the 2012 survey with comparison to the 2011 survey as well as the 2010 baseline survey.
Inclusive weak-annihilation decays and lifetimes of beauty-charmed baryons
Creators: name: Yang, Guo-He
name: Liang, En-Pei
name: Qin, Qin
name: Shao, Kang-Kang
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Imbalanced beauty-charmed baryons $ Ξ_{bc}^{+,0} $ are of great significance to the development of heavy flavor physics. In this work, we study the inclusive weak-annihilation decays of $Ξ_{bc}^{+,0}$ and their contributions to the $Ξ_{bc}^{+,0}$ lifetimes. For the calculation of the inclusive $Ξ_{bc}^{+,0}\to X_{cs}$ decay width where $X_{cs}$ stands for the sum of the final states with charm number +1 and strange number -1, we work in the heavy diquark effective theory which provides us with a convenient technical tool to construct the operator product expansion. The $Ξ_{bc}^{+,0}$ is considered to be a superposition of two states with one containing a spin-0 $bc$ diquark and the other one containing a spin-1 $bc$ diquark. It is found that both the $Ξ_{bc}^{+,0}$ lifetimes and the $Ξ_{bc}^{+,0}\to X_{cs}$ branching ratios are very sensitive to the $bc$ spin in $Ξ_{bc}^{+,0}$. The $Ξ_{bc}^{+,0}\to X_{cd}$ results are also presented. As $Ξ_{bc}^+$ has a longer lifetime than $Ξ_{bc}^{0}$ and bigger branching ratios of similar decay channels, the exclusive decays $Ξ_{bc}^+\to D^{(*)+}Λ$, $Ξ_{bc}^+\to Λ_c^+\bar{K}^{(*)0}$, $Ξ_{bc}^+\to D^{(*)+}K^-p$, and $Ξ_{bc}^+\to D^{0}\bar{K}^{(*)0}p$ are more promising for experimental searches of $Ξ_{bc}^{+,0}$ at the LHC comparing with exclusive decay $Ξ_{b c} ^{0} \to D^0pK^-$.
description: 7 pages, 4 figures