cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Carrier-envelope phase dependent high-order harmonic generation with a high-repetition rate OPCPA-system
Creators: name: Rudawski, Piotr
name: Harth, Anne
name: Guo, Chen
name: Lorek, Eleonora
name: Miranda, Miguel
name: Heyl, Christoph M.
name: Larsen, Esben W.
name: Ahrens, Jan
name: Prochnow, Oliver
name: Binhammer, Thomas
name: Morgner, Uwe
name: Mauritsson, Johan
name: L'Huillier, Anne
name: Arnold, Cord L.
Publisher: name: New York : Springer LLC
Year: 2015
Subjects: subject: Laser
subject: Pulse amplification
subject: Multiple pulse interferences
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: We study high-order harmonic generation with a high-repetition rate (200 kHz), few-cycle, driving laser, based on optical parametric chirped pulse amplification. The system delivers carrier-envelope phase stable, 8 fs, 10 μJ pulses at a central wavelength of 890 nm. High-order harmonics, generated in a high-pressure Ar gas jet, exhibit a strong CEP-dependence over a large spectral range owing to excellent stability of the driving laser pulses. This range can be divided into three spectral regions with distinct CEP influence. The observed spectral interference structures are explained by an analytical model based upon multiple pulse interferences.
The paradox of the Casimir force in inhomogeneous transformation media
Creators: name: Simpson, William M. R.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: It has recently been argued that Casimir-Lifshitz forces depend in detail on the microphysics of a system; calculations of the Casimir force in inhomogeneous media yield results that are cutoff-dependent. This result has been shown to hold generally. But suppose we introduce an inhomogeneous metamaterial into a cavity that effectively implements a simple distortion of the coordinate system. Considered in its 'virtual space', the optical properties of such a material are homogeneous and consequently free from the cutoff-dependency associated with inhomogeneous media. This conclusion should be reconciled with recent advances in our understanding of Casimir-Lifshitz forces. We consider an example of such a system here and demonstrate that, whilst the size of the Casimir force is modified by the inhomogeneous medium, the force is cutoff-independent and can be stated exactly. The apparent paradox dissolves when we recognise that an idealised metamaterial that could implement a virtual geometry for all frequencies would be devoid of internal scattering, and would not give rise to a cutoff-dependency in the Casimir force for that reason.
description: 7 pages
Die Entwicklung berufsbildender Schulen in Preußen, Sachsen und Württemberg zwischen 1869 und 1914 : ein Vergleich der preußischen, sächsischen und württembergischen Entwicklungen im beruflichen Schulwesen bis zum Ersten Weltkrieg, unter besonderer Berücksichtigung der Metalltechnik, des Maschinenbaus und der Elektrotechnik
Creators: name: Yu, Jinyoung
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2011
Subjects: subject: Prussia
subject: Saxonia
subject: industrialization
subject: vocational-training
subject: dual system
subject: Preußen
subject: Sachsen
subject: Württemberg
subject: Industrialisierung
subject: Berufsausbildung
subject: duales System
subject: Dewey Decimal Classification::300 | Sozialwissenschaften, Soziologie, Anthropologie::370 | Erziehung, Schul- und Bildungswesen

description: [no abstract]
title: Emergency Diesel-Electric Generator Set Maintenance and Test Periodicity
Creators: name: Fehr, Stephen John
Publisher: name: Old Dominion University Libraries
Year: 2014

description: Manufacturer and industry recommendations vary considerably for maintenance and tests of emergency diesel-electric generator sets supporting critical operations power systems facilities. There is little consistency among sets of similar technology, and manufacturers and their representatives often provide contradictory guidance. As a result, periodicity of emergency diesel-electric generator set maintenance and tests varies considerably in practice. This work proposes and tests a research and analysis framework to develop parametric regression survival models of modern diesel-electric generator sets in emergency standby duty as a function of maintenance periodicity, test periodicity, and other predictors. Within this framework, predictors are developed from common maintenance and test actions, data is acquired and compiled in a standardized method, and this data is analyzed using non-parametric and parametric statistical stepwise regression techniques. The framework presented herein was tested on a small scale data set data drawn from emergency diesel-electric generator set logbooks at critical operations power systems facilities and is demonstrated as a feasible method of quantitatively determining the effectiveness of different periodicities of common routine maintenance and test actions on real-world data that contains a large fraction of left truncation and right censoring. A full scale study utilizing this framework is proposed to determine optimal maintenance and test periodicity.
title:  An Approach for Representation of Organizational Mental Models Using System Dynamics
Creators: name: Theissen, Jörg-Peter
Publisher: name: Old Dominion University Libraries
Year: 1994

description: The concept of mental models has received much attention within recent years, especially within the context of organizational learning. This research is based on and departs from the Organizational Learning Process as developed by Keating, Robinson, and Clemson (1994). That process, which is based on a verbal representation of mental models, does not call forth the kind of change that is desired in Organizational Learning. This research investigates if mental models can be represented in the form of system dynamics models and inquires if this representation is beneficial to the process of Organizational Learning.

The research was designed as a participatory action research. A five phase research process was conducted in a large engineering company that provides high-tech services for the US military. The participants were middle managers and the technical director of the organization.

Research findings present a revised process to represent mental models based on system dynamics and address the potential value of the process for Organizational Learning. Problems that were identified during the research project are pointed out and recommendations are made for future research.
Lexical alignment in autism (Stabile & Eigsti, 2022)
Creators: name: Stabile, Mackenzie
name: Eigsti, Inge-Marie
Publisher: name: ASHA journals
Year: 2022
Subjects: Speech pathology
Communication studies
Natural language processing

description: Purpose: Typical speakers tend to adopt words used by their conversational partners. This “lexical alignment” enhances communication by reducing ambiguity and promoting a shared understanding of the topic under discussion. Lexical alignment has been little studied to date in autism spectrum disorder (ASD); furthermore, it has been studied primarily via structured laboratory tasks that may overestimate performance. This study examined lexical alignment in ASD during discourse and explored associations with communicative success and executive function. Method: Thirty-one autistic and nonautistic adolescents were paired with a study-naïve research assistant (RA) to complete a social communication task that involved taking turns verbally instructing (guiding) the partner to navigate on a map. Lexical alignment was operationalized as the proportion of shared vocabulary produced by guides on successive maps. Task accuracy was operationalized as the pixels contained within the intended and drawn routes. Results: Results indicated that autistic adolescents had greater difficulty describing navigational routes to RAs, yielding paths that were less accurate. Alignment was reduced in autistic participants, and it was associated with path accuracy for nonautistic, but not autistic, adolescents. The association between lexical alignment and executive function missed significance (p = .05); if significant, the association would indicate that greater executive function difficulty was associated with reduced lexical alignment. Conclusions: These findings provide preliminary evidence of reduced lexical alignment in ASD in an unstructured discourse context. Moreover, positive associations between lexical alignment and task performance in the neurotypical group raise the possibility that interventions to promote the use of shared vocabulary might support better communication. Supplemental Material S1. Results with verbal IQ as a covariate. Stabile, M., & Eigsti, I.-M. (2022). Lexical alignment and communicative success in autism spectrum disorder. Journal of Speech, Language, and Hearing Research. Advance online publication. https://doi.org/10.1044/2022_JSLHR-22-00314
Altered neural correlates of threat reversal learning in youth following childhood trauma and associations with psychopathology
Creators: name: DeCross, Stephanie
Publisher: name: Zenodo
Year: 2023
Subjects: fear
threat
emotion
learning and memory
trauma
childhood trauma
affective neuroscience
clinical psychology
neuroimaging
psychopathology
mechanisms
development
reversal learning
salience network
default mode network
resilience

description: Poster presented at the Association for Behavioral and Cognitive Therapies (ABCT) 2023 SIG Student Poster Exposition for the Neurocognitive Therapies and Translational Research (NTTR) SIG at the November 2023 ABCT Conference in Seattle, WA.
Higgs boson mass bounds in the presence of a heavy fourth quark family
Creators: name: Bulava, John
name: Gerhold, Philipp
name: Jansen, Karl
name: Kallarackal, Jim
name: Nagy, Attila
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present Higgs boson mass bounds in a lattice regularization allowing thus for non-perturbative investigations. In particular, we employ a lattice modified chiral invariant Higgs-Yukawa model using the overlap operator. We show results for the upper and lower Higgs boson mass bounds in the presence of a heavy mass-degenerate quark doublet with masses ranging up to 700 GeV. We perform infinite volume extrapolations in most cases, and examine several values of the lattice cutoff. Furthermore, we argue that the lower Higgs boson mass bound is stable with respect to the addition of higher dimensional operators to the scalar field potential. Our results have severe consequences for the phenomenology of a fourth generation of quarks if a light Higgs boson is discovered at the LHC.
The Brief Life and Hard Times of the Coastal Plains Regional Commission
Creators: name: Dusenbury, Pat
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1985

description: Dusenbury's history of the Coastal Plains Regional Commission highlights the contributions made by this federally-funded economic development agency as well as traces the steps to its federally-ordered abolition. Her thorough description of the agency's demise dismisses the possibility of drawing the most obvious, but inaccurate, conclusion — that regional economic development planning is ineffective. Rather, this agency's loss of commitment to planning and preoccupation with survival account for its deserved end.
The UK Infrared Telescope M33 monitoring project. III. Feedback from dusty stellar winds in the central square kiloparsec
Creators: name: Javadi, Atefeh
name: van Loon, Jacco Th.
name: Khosroshahi, Habib
name: Mirtorabi, Mohammad Taghi
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We have conducted a near-infrared monitoring campaign at the UK InfraRed Telescope (UKIRT), of the Local Group spiral galaxy M33 (Triangulum). The main aim was to identify stars in the very final stage of their evolution, and for which the luminosity is more directly related to the birth mass than the more numerous less-evolved giant stars that continue to increase in luminosity. In this third paper of the series, we measure the dust production and rates of mass loss by the pulsating Asymptotic Giant Branch (AGB) stars and red supergiants. To this aim, we combined our time-averaged near-IR photometry with the multi-epoch mid-IR photometry obtained with the Spitzer Space Telescope. The mass-loss rates are seen to increase with increasing strength of pulsation and with increasing bolometric luminosity. Low-mass stars lose most of their mass through stellar winds, but even super-AGB stars and red supergiants lose $\sim40$% of their mass via a dusty stellar wind. More than three-quarters of the dust return is oxygenous. We construct a 2-D map of the mass-return rate, showing a radial decline but also local enhancements due to agglomerations of massive stars. We estimate a total mass-loss rate of 0.004--0.005 M$_\odot$ yr$^{-1}$ kpc$^{-2}$, increasing to $\sim0.006$ M$_\odot$ yr$^{-1}$ kpc$^{-2}$ when accounting for eruptive mass loss (e.g., supernovæ); comparing this to the current star formation rate of $\sim0.03$ M$_\odot$ yr$^{-1}$ kpc$^{-2}$ we conclude that star formation in the central region of M\,33 can only be sustained if gas is accreted from further out in the disc or from circum-galactic regions.
description: Accepted for publication in MNRAS
Historic Preservation and Urban Housing Policy
Creators: name: Berndt, Chris Schubert
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1977

description: Historic preservation is broadly concerned with maintaining the visible presence of history in our lives through a concerted effort to preserve culturally significant aspects of the built environment. Through their diversity of form and function, older buildings and areas provide continuity between the past and the present, contribute to the development of an aesthetic townscape, and evoke a sense of pleasantness and amenity. Such design considerations have traditionally had little relationship to the development of housing policy. Under the impact of a new emphasis on neighborhood conservation, this situation is rapidly changing. A realization that the built environment is a valuable asset must include an awareness of the design features and aesthetic value of the existing housing stock. In particular, housing strategists should recognize that areas of historic and architectural quality may appeal to certain portions of the housing market. Historic preservation can play an important role in achieving the objectives of a local housing policy which stresses neighborhood revitalization. This article suggests the growing importance of preservation as a housing strategy and illustrates how preservation in one North Carolina city, Wilmington, has helped to stimulate public investment and revitalization in the central city.
The Solar Corona: Why It Is Interesting for Us
Creators: name: Somov, Boris
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Strong magnetic fields are of vital importance to the physics of the solar corona. They easily move a rarefied coronal plasma. Physical origin of the main structural element of the corona, the so-called coronal streamers, is discussed. It is shown that the reconnecting current layers inside streamers determine their large-scale structure and evolution, including creation, disruption and recovery. Small-scale (fine) magnetic fields in the photosphere experience random motion. Their reconnection appears to be an important source of energy flux for quiet-corona heating. For active-corona heating, the peculiarities of entropy and magnetoacoustic waves, related to radiative cooling, are significant and should be taken into account in the coronal heating theory.
description: 6 pages, 3 figures
Protecting Our Mobility: An Overview of Alternatives
Creators: name: Allen, Larry
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1991

description: North Carolinians have had a long love affair with the automobile. A drive along Interstate 40 between Greensboro and Raleigh or along Interstates 85 and 77 connecting Kannapolis to Rock Hill, South Carolina, clearly illustrates how highway congestion has caused the long "honeymoon" with our cars to wane. North Carolina's major highways are filling up. Planners and others have helped create this problem through plans, zoning regulations, and development ordinances. Using these same tools, planners must find ways to resolve growing transportation problems.
Green Building Highlight: Interface, Inc.’s Platinum-Certified Showroom
Creators: name: Henderson, Holley
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2005

description: Interface, Inc., an Atlanta-based fabric manufacturer, has reinvented its pollution-intensive, petroleum-dependent manufacturing operation into a business that uses and promotes environmentally sustainable practices. The company manifested its greening with its first showroom and retail space in its headquarters city. Opened to the public in 2004, the showroom was designed and built with the goal of being designated a Platinum Project under the U.S. Green Building Council’s (USGBC’s) Leadership in Energy and Environmental Design for Commercial Interiors (LEED-CI) pilot program. There were rigorous criteria for achieving a LEED-CI designation in the pilot project. The showroom was the first project to achieve LEED-CI Platinum status.
title: Rheinische Bibliographie
Creators: name: Springer, A.
Publisher: name: University Library Heidelberg
Year: 2016

description: Rezension zu: Die Porta Nigra und das Capitolinum der Treviris. Von Dr. P. A. Linde. Trier 1852. Rezension zu: Ueber den Ort der Niederlage der Römer unter Varus. Eine Abhandlung von M F. Esselen. K. pr. Hofrath. Hamm 1853. Rezension zu: Der Palast Kaiser Karl des Grosses in Ingelheim und die seiner Nachfolger daselbst. Von A. v. Cohausen. Mainz 1852. Rezension zu: Die Benediktiner-Abtei München-Gladbach. Ein Beitrag zur Gesch. d. Herzogthums Jülich. Von Dr. G. Eckert u. Konr. Noever. Köln 1853.
Sedum ochroleucum var. montanum
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: S.ochroleucum Chaix var. montanum (Perr. et Song.) Burnat (S.montanum Perr. et Song., S.rupestre L. ssp.montanum Hegi et Schmid) Vgl.Schinz und Thellung in Ber.Schweiz.Bot. Ges.22,S.127-128 (1913) und Schinz und Keller, Flora 1914 und 1923. Verbreitet, früher meist mit S. rupestre verwechselt; belegt z.B. von: l: Vernayaz,Salvan,Les Marécottes.- 2:Gegend von Fully (bis2120m:Gams),Ovronnaz,Inden, Leukerbad.- 3:Mont-Chemin, Val d'Hérémence, Val d'Anniviers, Visp, Randa, Zermatt (hier bis 2110 m bei Findelen: Braun-Blanquet), Saas-Grund,Schallberg am Simplon. - 4: Ausserbinn- Binn, Münster. Hierher wohl die meisten Angaben von S.rupestre im Cat. 151.
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
Towards dry machining of titanium-based alloys : A new approach using an oxygen-free environment
Creators: name: Maier, Hans Jürgen
name: Herbst, Sebastian
name: Denkena, Berend
name: Dittrich, Marc-André
name: Schaper, Florian
name: Worpenberg, Sebastian
name: Gustus, René
name: Maus-Friedrichs, Wolfgang
Publisher: name: Basel : MDPI AG
Year: 2020
Subjects: subject: Built-up edge
subject: Extreme vacuum
subject: Microstructure
subject: Milling
subject: Ti 64
subject: Ti-6Al-4V
subject: Tribo-oxidation
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: In the current study, the potential of dry machining of the titanium alloy Ti-6Al-4V with uncoated tungsten carbide solid endmills was explored. It is demonstrated that tribo-oxidation is the dominant wear mechanism, which can be suppressed by milling in an extreme high vacuum adequate (XHV) environment. The latter was realized by using a silane-doped argon atmosphere. In the XHV environment, titanium adhesion on the tool was substantially less pronounced as compared to reference machining experiments conducted in air. This goes hand in hand with lower cutting forces in the XHV environment and corresponding changes in chip formation. The underlying mechanisms and the ramifications with respect to application of this approach to dry machining of other metals are discussed. © 2020, MDPI AG. All rights reserved.
New Bern Buoys its Downtown through Riverwalk Project
Creators: name: Thomas, Susan Moffat
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2010

description: The annual conference of the North Carolina Chapter of the American Planning Association (NCAPA) will be held in New Bern this year. This article describes some of the city’s ongoing greening efforts that conference attendees can experience during their visit.
Microstructural evolution and mechanical properties of hybrid bevel gears manufactured by tailored forming
Creators: name: Behrens, Bernd-Arno
name: Chugreeva, Anna
name: Diefenbach, Julian
name: Kahra, Christoph
name: Herbst, Sebastian
name: Nürnberger, Florian
name: Maier, Hans Jürgen
Publisher: name: Basel : MDPI AG
Year: 2020
Subjects: subject: Air-water spray cooling
subject: Bevel gears
subject: Hot forging
subject: Hybrid components
subject: Process-integrated heat treatment
subject: Self-tempering
subject: Tailored forming
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: The production of multi-metal bulk components requires suitable manufacturing technologies. On the example of hybrid bevel gears featuring two different steels at the outer surface and on the inside, the applicability of the novel manufacturing technology of Tailored Forming was investigated. In a first processing step, a semi-finished compound was manufactured by cladding a substrate using a plasma transferred arc welding or a laser hotwire process. The resulting semi-finished workpieces with a metallurgical bond were subsequently near-net shape forged to bevel gears. Using the residual heat after the forging process, a process-integrated heat treatment was carried out directly after forming. For the investigations, the material combinations of 41Cr4 with C22.8 (AISI 5140/AISI 1022M) and X45CrSi9-3 with C22.8 (AISI HNV3/AISI 1022M) were applied. To reveal the influence of the single processing steps on the resulting interface, metallographic examinations, hardness measurements and micro tensile tests were carried out after cladding, forging and process-integrated heat treatment. Due to forging and heat-treatment, recrystallization and grain refinement at the interface and an increase in both, hardness and tensile strength, were observed. © 2020 by the authors. Licensee MDPI, Basel, Switzerland.
Πειρατεία και ανθρώπινος παράγοντας
Creators: name: Καλλιώρα, Θεοφανία
Publisher: name: Πανεπιστήμιο Πειραιώς
Year: 2023
Subjects: subject: Πειρατεία
subject: Γεωγραφική κατανομή
subject: Αίτια
subject: Επιπτώσεις στους ναυτικούς και στην ναυτιλιακή εταιρεία
subject: Νομική διάσταση της πειρατείας
subject: Μέτρα πρόληψης και αντιμετώπισης της πειρατείας

description: Το θέμα που πραγματεύεται η εν λόγω διπλωματική αφορά τη πειρατεία και τον ανθρώπινο παράγοντα, φαινόμενο το οποίο επηρεάζει τη ναυτιλία και γενικότερα το διεθνές εμπόριο μέχρι και σήμερα. Πιο συγκεκριμένα, στο πρώτο κεφάλαιο θα αναφερθεί ο ορισμός της πειρατείας και θα γίνει μία διάκριση στις διάφορες κατηγορίες της πειρατείας, των πειρατών και στις δράσεις στις οποίες αυτοί προχωρούν. Στο δεύτερο κεφάλαιο θα γίνει μία γεωγραφική κατανομή και ένας διαχωρισμός στις περιοχές που θεωρούνται υψηλού και χαμηλού κινδύνου. Στη συνέχεια, θα καταγραφούν πειρατικές επιθέσεις και καταστάσεις ομηρίας και θανάτου στα πληρώματα τα οποία επηρεάζουν το ανθρώπινο δυναμικό του πλοίου και τα οποία γεγονότα έχουν τελεστεί σε διάφορες περιοχές του κόσμου. Στο τρίτο κεφάλαιο θα καταγραφούν τα αίτια και οι επιπτώσεις που παρατηρούνται λόγω των δράσεων των πειρατών. Σε πρώτη ανάλυση θα εντοπιστούν οι επιπτώσεις που επέρχονται στους ναυτικούς και πώς επηρεάζονται σε επαγγελματικό και ψυχολογικό επίπεδο και σε δεύτερη ανάλυση θα εντοπιστεί η αρνητική επίδραση του φαινομένου ως προς μία ναυτιλιακή εταιρεία. Στο τέταρτο κεφάλαιο θα εξετάσουμε τη νομική διάσταση της πειρατείας. Θα δοθεί μία αναλυτική περιγραφή των μέτρων, των νόμων και κανονισμών (εθνικό, διεθνές και ευρωπαϊκό επίπεδο) που έχουν ληφθεί για να περιοριστεί το εν λόγω φαινόμενο. Στο πέμπτο κεφάλαιο θα προταθούν μέτρα πρόληψης, καταστολής και αντιμετώπισης της πειρατείας, μέτρα τα οποία πρέπει να λάβει μία ναυτιλιακή εταιρεία αλλά και το πλήρωμα που επανδρώνει ένα πλοίο. Στο έκτο κεφάλαιο θα παρατεθούν κάποια συμπεράσματα για το υπό εξέταση ζήτημα.
Particle current fluctuations in a particle-nonconserving process
Creators: name: Torkaman, Pegah
name: Jafarpour, Farhad H.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We have considered a one-dimensional coagulation-decoagulation system of classical particles on a finite lattice with reflecting boundaries. It is known that the system undergoes a phase transition from a high-density to a low-density phase. Using a matrix product approach we have obtained an exact expression for the average entropy production rate of the system in the thermodynamic limit. We have also performed a large deviation analysis for fluctuations of entropy production rate and particle current. It turns out that the characteristics of the kink in the large deviation function can be used to spot the phase transition point. We have found that for very weak driving field (when the system approaches to its equilibrium) and also for very strong driving field (when the system is in the low-density phase) the large deviation function for fluctuations of entropy production rate is almost parabolic while in the high-density phase it prominently deviates from Gaussian behavior. The validity of the Gallavotti-Cohen fluctuation relation for the large deviation function for particle current is also verified.
description: 7 pages, 5 figures, accepted for publication in PRE
Development of Phytocosmeceutical Microemulgel Containing Flaxseed Extract and Its In Vitro and In Vivo Characterization
Creators: name: Tasneem, Rabia
name: Khan, Haji Muhammad Shoaib
name: Rasool, Fatima
name: Khan, Kashif-Ur-Rehman
name: Umair, Muhammad
name: Esatbeyoglu, Tuba
name: Korma, Sameh A.
Publisher: name: Basel : MDPI
Year: 2022
Subjects: subject: antioxidant
subject: cosmetic
subject: formulation development
subject: HPLC-UV
subject: in vivo study
subject: Linum usitatissimum
subject: pharmaceutic
subject: topical
subject: phytocosmetics
subject: radical scavenging activity
subject: Dewey Decimal Classification::600 | Technik::610 | Medizin, Gesundheit

description: Antioxidants from natural sources are extensively attaining consideration to avert the skin from damage and aging caused by free radicals. Flaxseed (Linum usitatissimum L.), a natural therapeutic agent, was meant to be explored cosmeceutical by quantifying its potential phytoconstituents and to be incorporated into a microemulgel for topical use. Hydroalcoholic fractions (both methanolic and ethanolic; 80%) flaxseed extracts were subjected to phytochemical screening by quantifying total phenolic content (TPC), total flavonoid content (TFC), and high-performance liquid chromatography-ultraviolet (HPLC-UV), and for biological activities through 2,2-diphenyl-1-picrylhydrazyl (DPPH) assay, tyrosinase inhibition assay, and sun protection factor (SPF). Ethanolic fraction was selected for further study by TPC (18.75 mg gallic acid equivalent/g) and TFC (1.34 mg quercetin equivalent/g). HPLC-UV analysis showed the existence of benzoic, quercetin, caffeic, vanillic, p-coumaric, gallic, cinnamic, syringic, and sinapic acids. Biological activities showed 87.00%, 72.00%, and 21.75 values for DPPH assay, tyrosinase inhibition, and SPF assays, respectively. An oil-in-water (OW) microemulsion containing the flaxseed extract, with 99.20 nm Zeta size, −19.3 Zeta potential and 0.434 polydispersity index was developed and incorporated in Carbopol-940 gel matrix to formulate an active microemulgel with 59.15% release in in vitro studies. The successfully formulated stable active microemulgel produced statistically significant effects (p < 0.05), in comparison to a placebo, on skin erythema, melanin, sebum, moisture, and elasticity, in a noninvasive in vivo study performed on 13 healthy human female volunteers. Other cosmeceutical products can also be formulated from flaxseed, making it a considerable candidate for further utilization in the pharmaceutical industry.
MPEC 2023-L84 : 2023 JX21
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2023 JX21

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Growth Management and Transportation: The Florida Experience
Creators: name: Charlier, James
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1991

description: Over five years have passed since Florida enacted its landmark growth management law. In that time, Florida planners and public officials have gained some hard-earned experience in the practical aspects of implementing a statewide growth management program. As expected, transportation issues have been at the forefront of the growth policy debates during this "shakedown" period. One of the primary motivating factors that led Florida to pursue its ambitious growth management program in the first place was a general public dissatisfaction with the traffic and highway congestion that accompanied the state's surging growth during the 1970s and 1980s. It now appears that some of these issues may not be easily resolved as state and local governments wrestle with the complex and competing needs and demands of this booming Sunbelt state. However, Floridians are gaining a better understanding of the nature of the transportation challenge and, as a result, are beginning to rethink some of their original assumptions about growth and mobility.
Dead, Undead and Zombie Zones in Protostellar Disks as a Function of Stellar Mass
Creators: name: Mohanty, Subhanjoy
name: Ercolano, Barbara
name: Turner, Neal J.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We investigate the viability of the magnetorotational instability (MRI) in accretion disks around both solar-type stars and very low mass stars. In particular, we determine the disk regions where the MRI can be shut off either by Ohmic resistivity (the so-called Dead and Undead Zones) or by ampipolar diffusion (a region we term the Zombie Zone). We consider 2 stellar masses: Mstar = 0.7 and 0.1 Msun. In each case, we assume that: the disk surface density profile is that of a scaled Minimum Mass Solar Nebula, with Mdisk/Mstar ~ 0.01 as currently estimated; disk ionisation is driven primarily by stellar X-rays, complemented by cosmic rays and radionuclides; and the stellar X-ray luminosity scales with bolometric luminosity as Lx/Lstar ~ 10^-3.5, as observed. Ionization rates are calculated with the MOCCASIN code, and ionisation balance determined using a simplified chemical network, including well-mixed 0.1 um grains at various levels of depletion. We find that (1) ambipolar diffusion is the primary factor controlling MRI activity in disks around both solar-type and very low mass stars. Assuming that the MRI yields the maximum possible field strength at each radius, we further find that: (2) the MRI-active layer constitutes only ~ 5-10% of the total disk mass; (3) the accretion rate (Mdot) varies radially in both magnitude and sign (inward or outward), implying time-variable accretion as well as the creation of disk gaps and overdensities, with consequences for planet formation and migration; (4) achieving the empirical accretion rates in solar-type and very low mass stars requires a depletion of well-mixed small grains by a factor of 10-1000 relative to the standard dust-to-gas mass ratio of 10^-2; and (5) the current non-detection of polarized emission from field-aligned grains in the outer disk regions is consistent with active MRI at those radii.
description: 55 pages, 16 figures. ApJ, accepted
Convective line shifts for the Gaia RVS from the CIFIST 3D model atmosphere grid
Creators: name: Prieto, C. Allende
name: Koesterke, L.
name: Ludwig, H. -G.
name: Freytag, B.
name: Caffau, E.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: To derive space velocities of stars along the line of sight from wavelength shifts in stellar spectra requires accounting for a number of second-order effects. For most stars, gravitational redshifts, convective blueshifts, and transverse stellar motion are the dominant contributors. We provide theoretical corrections for the net velocity shifts due to convection expected for the measurements from the Gaia Radial Velocity Spectrometer (RVS). We used a set of three-dimensional time-dependent simulations of stellar surface convection computed with CO5BOLD to calculate spectra of late-type stars in the Gaia RVS range and to infer the net velocity offset that convective motions will induce in radial velocities derived by cross-correlation. The net velocity shifts derived by cross-correlation depend both on the wavelength range and spectral resolution of the observations. Convective shifts for Gaia RVS observations are less than 0.1 km/s for late-K-type stars, and they increase with stellar mass, reaching about 0.3 km/s or more for early F-type dwarfs. This tendency is the result of an increase with effective temperature in both temperature and velocity fluctuations in the line-forming region. Our simulations also indicate that the net RVS convective shifts can be positive (i.e. redshifts) in some cases. Overall, the blueshifts weaken slightly with increasing surface gravity, and are enhanced at low metallicity. Gravitational redshifts amount up to 0.7 km/s and dominate convective blueshifts for dwarfs, but become much weaker for giants.
description: 13 pages, to appear in A&A; model fluxes available from ftp://leda.as.utexas.edu/pub/callende/Gaia3D and soon from CDS
Anti-Obesity Evaluation of Averrhoa carambola L. Leaves and Assessment of Its Polyphenols as Potential α-Glucosidase Inhibitors
Creators: name: Ramadan, Nehal S.
name: El-Sayed, Nabil H.
name: El-Toumy, Sayed A.
name: Mohamed, Doha Abdou
name: Aziz, Zeinab Abdel
name: Marzouk, Mohamed Sobhy
name: Esatbeyoglu, Tuba
name: Farag, Mohamed A.
name: Shimizu, Kuniyoshi
Publisher: name: Basel : MDPI
Year: 2022
Subjects: subject: antidiabetic
subject: Averrhoa carambola L.
subject: dihydrochalcone
subject: flavone glycosides
subject: obesity
subject: Oxalidaceae
subject: type 2 diabetes
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: Averrhoa carambola L. is reported for its anti-obese and anti-diabetic activities. The present study aimed to investigate its aqueous methanol leaf extract (CLL) in vivo anti-obese activity along with the isolation and identification of bioactive compounds and their in vitro α-glucosidase inhibition assessment. CLL improved all obesity complications and exhibited significant activity in an obese rat model. Fourteen compounds, including four flavone glycosides (1–4) and ten dihydrochalcone glycosides (5–12), were isolated and identified using spectroscopic techniques. New compounds identified in planta included (1) apigenin 6-C-(2-deoxy-β-D-galactopyranoside)-7-O-β-D-quinovopyranoside, (8) phloretin 3′-C-(2-O-(E)-cinnamoyl-3-O-β-D-fucopyranosyl-4-O-acetyl)-β-D-fucopyranosyl-6′-O-β-D fucopyranosyl-(1/2)-α-L arabinofuranoside, (11a) phloretin3′-C-(2-O-(E)-p-coumaroyl-3-O-β-D-fucosyl-4-O-acetyl)-β-D-fucosyl-6′-O-(2-O-β-D-fucosyl)-α-L-arabinofuranoside, (11b) phloretin3′-C-(2-O-(Z)-p-coumaroyl-3-O-β-D-fucosyl-4-O-acetyl)-β-D-fucosyl-6′-O-(2-O-β-D-fucosyl)-α-L-arabinofuranoside. Carambolaside M (5), carambolaside Ia (6), carambolaside J (7), carambolaside I (9), carambolaside P (10a), carambolaside O (10b), and carambolaside Q (12), which are reported for the first time from A. carambola L. leaves, whereas luteolin 6-C-α-L-rhamnopyranosyl-(1-2)-β-D-fucopyranoside (2), apigenin 6-C-β-D-galactopyranoside (3), and apigenin 6-C-α-L-rhamnopyranosyl-(1-2)-β-L-fucopyranoside (4) are isolated for the first time from Family. Oxalidaceae. In vitro α-glucosidase inhibitory activity revealed the potential efficacy of flavone glycosides, viz., 1, 2, 3, and 4 as antidiabetic agents. In contrast, dihydrochalcone glycosides (5–11) showed weak activity, except for compound 12, which showed relatively strong activity.
Distinguishability Analysis for Multiple Mass Models of Servo Systems with Commissioning Sensors
Creators: name: Tantau, Mathias
name: Perner, Lars
name: Wielitzka, Mark
Publisher: name: Piscataway, NJ : IEEE
Year: 2021
Subjects: subject: Model Selection
subject: Distinguishability
subject: Markov parameters
subject: Electric drives
subject: Unterscheidbarkeit
subject: Struktur- und Parameteridentifikation
subject: Zusatzsensorik
subject: elektrischer Antriebsstrang
subject: Markov Parameter
subject: Dewey Decimal Classification::600 | Technik

description: Physically motivated models of electromechanical motion systems enable model-based control theory and facilitate system interpretation. Unfortunately, the effort of modelling restricts the usage of model-based methods in many applications. Some approaches to automatically generate models from measurements choose the best model based on minimizing the residual. These model selection attempts are limited due to ambiguities in reconstructing the internal structure from the input-output behaviour because usually motion systems have only one actuator and one sensor. Often, it is unknown if the resulting model is unique or if other models with different structure would fit equally well. The set of candidate models should be designed to contain only distinguishable models but ambiguities are often unknown to the experimenter. In this paper distinguishability is investigated systematically for a class of multiple mass models representing servo positioning systems. In the analysis a new criterion for indistinguishability is used. The benefit of additional, structural sensors on distinguishability of models is demonstrated which suggests to mount them temporarily for the commissioning phase in order to facilitate the model selection. It turns out that the best results can be achieved if synergies among sensor signals are utilized. © 2021 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
Calcium ions decrease water-soaking in strawberries
Creators: name: Hurtado, Grecia
name: Knoche, Moritz
Publisher: name: San Francisco, California, US : PLOS
Year: 2022
Subjects: subject: Anthocyanins
subject: Calcium
subject: Fragaria
subject: Fruit
subject: Ions
subject: Dewey Decimal Classification::500 | Naturwissenschaften
subject: Dewey Decimal Classification::600 | Technik::610 | Medizin, Gesundheit

description: Water soaking is a common disorder of field-grown strawberries (Fragaria × ananassa Duch.). It develops when ripe fruit is exposed to rain. Here we investigate the effects of Ca on water soaking. Fruit was incubated in solutions of various Ca salts and the extent of water soaking quantified using a simple rating scheme. Exposure to CaCl2 (10 mM) decreased water soaking and anthocyanin leakage but had no effect on water uptake. The decrease in water soaking due to CaCl2 was not limited to a single cultivar but occurred in all cultivars examined. Incubating fruit in a chelating agent (EGTA) increased water soaking compared to the water control. Calcium salts of different acids varied in their effects on water soaking. Only CaCl2 reduced water soaking significantly. The chlorides of different cations, also varied in their effects on water soaking. Those of the monovalent cations had no effects on water soaking, while those of the divalent cations (CaCl2, BaCl2 and SrCl2) and of the trivalent cations (FeCl3 and AlCl3) were all effective in decreasing water soaking. Overall, CaCl2 decreased microcracking of the strawberry cuticle as compared to deionized water. Furthermore, CaCl2 also reduced the leakage of anthocyanins from flesh discs, irrespective of the osmotic potential of the incubation solution. Our results indicate that CaCl2 reduced water soaking by decreasing cuticular microcracking, by decreasing leakage of plasma membranes and, possibly, by increasing the crosslinking of cell wall constituents.
Mechanism Design in Defense against Offline Password Attacks
Creators: name: Bai, Wenjie
Publisher: name: Purdue University Graduate School
Year: 2023
Subjects: Data security and protection

description: The prevalence of offline password attacks, resulting from attackers breaching authentication servers and stealing cryptographic password hashes, poses a significant threat. Users' tendency to select weak passwords and reuse passwords across multiple accounts, coupled with computation advancement, further exacerbate the danger.
 This dissertation addresses this issue by proposing password authentication mechanisms that aim to minimize the number of compromised passwords in the event of offline attacks, while ensuring that the server's workload remains manageable. Specifically, we present three mechanisms: (1) DAHash: This mechanism adjusts password hashing costs based on the strength of the underlying password. Through appropriate tuning of hashing cost parameters, the DAHash mechanism effectively reduces the fraction of passwords that can be cracked by an offline password cracker. (2) Password Strength Signaling: We explore the application of Bayesian Persuasion to password authentication. The key idea is to have the authentication server store a noisy signal about the strength of each user password for an offline attacker to find. We demonstrate that by appropriately tuning the noise distribution for the signal, a rational attacker will crack fewer passwords. (3) Cost-Asymmetric Memory Hard Password Hashing: We extend the concept of password peppering to modern Memory Hard password hashing algorithms. We identify limitations in naive extensions and introduce the concept of cost-even breakpoints as a solution. This approach allows us to overcome these limitations and achieve cost-asymmetry, wherein the expected cost of validating a correct password is significantly smaller than the cost of rejecting an incorrect password.
 When analyzing the behavior of a rational attacker it is important to understand the attacker’s guessing curve i.e., the percentage of passwords that the attacker could crack within a guessing budget B. Dell’Amico and Filippone introduced a Monte Carlo algorithm to estimate the guessing number of a password as well as an estimate for the guessing curve. While the estimated guessing number is accurate in expectation the variance can be large and the method does not guarantee that the estimates are accurate with high probability. Thus, we introduce Confident Monte Carlo as a tool to provide confidence intervals for guessing number estimates and upper/lower bound the attacker’s guessing curves.
 Moreover, we extend our focus beyond classical attackers to include quantum attackers. We present a decision-theoretic framework that models the rational behavior of attackers equipped with quantum computers. The objective is to quantify the capabilities of a rational quantum attacker and the potential damage they could inflict, assuming optimal decision-making. Our framework can potentially contribute to the development of effective countermeasures against a wide range of quantum pre-image attacks in the future.
Integral representations of the weighted geometric mean and the logarithmic mean
Creators: name: Qi, Feng
name: Zhang, Xiao-Jing
name: Li, Wen-Hui
Publisher: name: arXiv
Year: 2013
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: Complex Variables (math.CV)
subject: FOS: Mathematics
subject: Primary 26E60, 30E20, Secondary 26A48, 44A20

description: In the paper, the authors show that the weighted geometric mean and the logarithmic mean are Bernstein functions and establish integral representations of these means by Cauchy's integral theorem in the theory of complex functions.
description: 12 pages. arXiv admin note: text overlap with arXiv:1301.6848
title: Eva Stauch, Wenigumstadt. Ein Bestattungsplatz der Völkerwanderungszeit und des frühen Mittelalters im nördlichen Odenwaldvorland
Creators: name: Quast, Dieter
Publisher: name: University Library Heidelberg
Year: 2016

description: Rezension zu: Eva Stauch, Wenigumstadt. Ein Bestattungsplatz der Völkerwanderungszeit und des frühen Mittelalters im nördlichen Odenwaldvorland. Universitätsforschungen zur Prähistorischen Archäologie 111, Verlag Dr. Rudolf Habelt, Bonn 2004. Teil1: 306 Seiten, 125 Abbildungen, 45 Tabellen, 9 Tafeln; Teil 2: 258 Seiten, 174 Tafeln.
A-S-P Associates v. Raleigh: A Recent Court Test of Historic Preservation in North Carolina
Creators: name: Botvinick, Ira J.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1979

description: In October, 1979, the North Carolina Supreme Court handed down a decision on one of the most significant land-use planning cases to be heard by that Court. Among the planning-law issues to be decided by the Court in A-S-P Associates v. Raleigh (1979) were the validity of historic district zoning, contextual standards for administrative issuance of permits, spot-zoning, validity of overlapping zoning districts, and the comprehensive-plan requirement. The decision represents a major victory for the historic preservation movement in the state, as North Carolina becomes the first Southeastern state to affirm the constitutional validity of historic preservation. The following article will discuss the context and nature of the decision handed down by the Court, as well as the implications for future planning practice in the state.