cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Ecophysiology of the effect of red to far-red light ratio on selected weed and crop species
Creators: name: Ma, Li
Publisher: name: University of British Columbia
Year: 2017

description: Plants growing in canopies are exposed to reduced light intensity as well as low red/far-red light ratios, a signal of impending competition. In order to advance our understanding of the eco-physiological role of red/far-red ratio in agroecosystems, growth chamber and greenhouse studies were conducted to investigate 1. the growth and morphological responses of common lamb’s-quarters (Chenopodium album L.), redroot pigweed (Amaranthus retroflexus L.) and tomato (Solanum lycopersicum L.) to different red/far-red ratios, 2. how leaf optical properties at red (660 nm) and far-red (730 nm) wavelengths change with leaf position and plant development, and 3. if red/far-red ratio influences response of corn (Zea mays L.), lettuce (Lactuca sativa L.), and pigweed plants to UV-B radiation. Three red/far-red ratios were achieved by using supplemental far-red lamps in growth chambers, while maintaining the photosynthetically active radiation. Results showed that red/far-red ratio treatment influenced several growth and allometric parameters and tomato, lamb’s-quarters, and pigweed differed in this regard. This differential response among species suggests that fluctuations in the red/far-red ratio in canopies could impact inter-plant interactions among these species. Red/far-red ratio in a plant canopy is affected by leaf optical properties. A study of leaf optical properties of lamb’s-quarters, pigweed and tomato using a CI-710 Miniature Leaf Spectrometer showed that leaf optical properties changed with leaf position and plant development, which could modify the light environment in canopies comprising populations of these species. Interestingly, these species differed in this regard, suggesting differences in their ability to signal potential competition. Leaf optical properties, as well as leaf position and plant development effects, therefore, should be taken into consideration in assessing the eco-physiological functions of a vegetation cover. Effect of pre-exposure to low red/far-red ratio on plant susceptibility to UV-B radiation could impact plant interaction. However, my research showed that red/far-red ratio pre-treatment and the associated change in anthocyanin concentration did not alter the response of corn, lettuce and pigweed seedlings to enhanced UV-B radiation. This improves our understanding of the eco-physiological role of these environmental stressors in agro-ecosystems, where both red/far-red ratio and UV-B levels fluctuate.
Entanglement dynamics of two-bipartite system under the influence of dissipative environments
Creators: name: Bougouffa, Smail
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: An experimental scheme is suggested that permits a direct measure of entanglement in a two-qubit cavity system. It is realized in the cavity-QED technology utilizing atoms as flying qubits. With this scheme we generate two different measures of entanglement, namely logarithmic negativity and concurrence. The phenomenon of sudden death entanglement (ESD) in a bipartite system subjected to dissipative environment is examined. We show that the sudden death time of the entangled states depends on the initial preparation of the entangled state and the temperature of the reservoir.
description: 21 pages, 13 figures
The Hypermultiplet with Heisenberg Isometry in N=2 Global and Local Supersymmetry
Creators: name: Ambrosetti, Nicola
name: Antoniadis, Ignatios
name: Derendinger, Jean-Pierre
name: Tziveloglou, Panteleimon
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The string coupling of N=2 supersymmetric compactifications of type II string theory on a Calabi-Yau manifold belongs to the so-called universal dilaton hypermultiplet, that has four real scalars living on a quaternion-Kaehler manifold. Requiring Heisenberg symmetry, which is a maximal subgroup of perturbative isometries, reduces the possible manifolds to a one-parameter family that describes the tree-level effective action deformed by the only possible perturbative correction arising at one-loop level. A similar argument can be made at the level of global supersymmetry where the scalar manifold is hyper-Kaehler. In this work, the connection between global and local supersymmetry is explicitly constructed, providing a non-trivial gravity decoupled limit of type II strings already in perturbation theory.
description: 24 pages
A defective angina pectoris pain warning system: Experimental findings of ischemic and electrical pain test
Creators: name: Droste, C.
name: Greenlee, Mark W.
name: Roskamm, H.
Publisher: name: Universität Regensburg
Year: 1986
Subjects: subject: 150 Psychologie

description: Ischemic pain threshold and tolerance levels using the tourniquet pain technique and electrical cutaneous pain thresholds were measured in patients with asymptomatic ischemie heart disease. Thirty asymptomatic patients, who repeatedly exhibited no angina pectoris pain during the occurrence of exercise-induced coronary ischemia (⩾ 0.1 mV ST segment depression in exercise ECG) were compared to 30 randomly selected symptomatic control patients. In a smaller patient group (6 symptomatic, 6 asympatomatic) the degree of forearm ischemia during the tourniquet test was determined non-invasively by monitoring transcutaneous pO₂. Results indicated that asymptomatic patients needed significantly more time to reach pain threshold following occlusion of forearm blood flow and exhibited significantly lower tcpO₂ values at threshold than symptomatic patients. Electrical pain thresholds were also elevated in the asymptomatic group. These findings indicate that the phenomenon of asymptomatic myocardial ischemia can be explained by an extracardiac pain modifying mechanism.
Matchings, coverings, and Castelnuovo-Mumford regularity
Creators: name: Woodroofe, Russ
Publisher: name: arXiv
Year: 2010
Subjects: subject: Combinatorics (math.CO)
subject: Commutative Algebra (math.AC)
subject: FOS: Mathematics
subject: 05E45, 13F55, 05C70

description: We show that the co-chordal cover number of a graph G gives an upper bound for the Castelnuovo-Mumford regularity of the associated edge ideal. Several known combinatorial upper bounds of regularity for edge ideals are then easy consequences of covering results from graph theory, and we derive new upper bounds by looking at additional covering results.
description: 12 pages; v4 has minor changes for publication
Baroreceptor stimulation: Pain perception and sensory thresholds
Creators: name: Droste, C.
name: Kardos, A.
name: Brody, S.
name: Greenlee, Mark W.
name: Roskamm, H.
name: Rau, H.
Publisher: name: Universität Regensburg
Year: 1994
Subjects: subject: baroreceptors; PRES; blood pressure; antinociception
subject: 150 Psychologie

description: Baroreceptor activity has been implicated in the modulation of pain. Sensory detection thresholds and pain ratings were measured in a group of 28 men during carotid baroreceptor manipulation with the PRES (phase-related external suction) neck suction technique. Brief, cardiac phase-related electrical impulses were delivered intracutaneously to the finger. The results indicate that minimum baroreceptor activity was associated with more severe pain, but had no effect on sensory detection threshold. The results are discussed in terms of the learned model of hypertension.
The ordered K-theory of a full extension
Creators: name: Eilers, Søren
name: Restorff, Gunnar
name: Ruiz, Efren
Publisher: name: arXiv
Year: 2011
Subjects: subject: Operator Algebras (math.OA)
subject: FOS: Mathematics
subject: 46L05

description: Let A be a C*-algebra with real rank zero which has the stable weak cancellation property. Let I be an ideal of A such that I is stable and satisfies the corona factorization property. We prove that 0->I->A->A/I->0 is a full extension if and only if the extension is stenotic and K-lexicographic. As an immediate application, we extend the classification result for graph C*-algebras obtained by Tomforde and the first named author to the general non-unital case. In combination with recent results by Katsura, Tomforde, West and the first author, our result may also be used to give a purely K-theoretical description of when an essential extension of two simple and stable graph C*-algebras is again a graph C*-algebra.
description: Version IV: No changes to the text. We only report that Theorem 4.9 is not correct as stated. See arXiv:1505.05951 for more details. Since Theorem 4.9 is an application to the main results of the paper, the main results of this paper are not affected by the error. Version III comments: Some typos and errors corrected. Some references added
Contrast threshold elevation following continuous and interrupted adaptation
Creators: name: Magnussen, S.
name: Greenlee, Mark W.
Publisher: name: Universität Regensburg
Year: 1986
Subjects: subject: Psychophysics Grating adaptation Decay
subject: 150 Psychologie

description: Contrast thresholds for a 6 c/deg sinewave grating were measured following continuous and interrupted adaptation of 10 min duration to a high-contrast (0.6) sinewave grating of the same spatial frequency. Interrupted adaptation was administered as five 2-min segments, and the interadaptation interval (IAI) was varied from 10 to 180 sec. The results indicate that adaptation to spatial contrast can be described by a two-staged process, each stage having a different time constant of adaptation decay.
The functional role of contrast adaptation
Creators: name: Greenlee, Mark W.
name: Heitger, F.
Publisher: name: Universität Regensburg
Year: 1988
Subjects: subject: 150 Psychologie

description: Prolonged inspection of high contrast sinewave gratings increases the contrast required to detect gratings having a similar spatial frequency and orientation. The functional role of such adaptation has, however, in the past, eluded disclosure. We here show that 5 min adaptation to a 2 c/deg sinewave grating of 0.8 contrast changes the observer's ability to discriminate the contrast level of a subsequently presented grating of the same spatial frequency and orientation. Similar to the threshold elevation effect, the observers required more incremental contrast for background contrast levels between 0.1 and 0.4 following adaptation. However, for contrast levels above 0.5, the observers required less delta contrast, following adaptation, to correctly discriminate which of two gratings was incremented in contrast. A simple model for adaptation is proposed to account for the findings which is based on a shift in the semi-saturation constant of the detector's contrast-response function. According to this model, adaptation acts to linearize the underlying mechanism's response in the region near the prevailing contrast level.
Continuous variable quantum key distribution in non-Markovian channels
Creators: name: Vasile, Ruggero
name: Olivares, Stefano
name: Paris, Matteo G A
name: Maniscalco, Sabrina
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We address continuous variable quantum key distribution (QKD) in non-Markovian lossy channels and show how the non-Markovian features may be exploited to enhance security and/or to detect the presence and the position of an eavesdropper along the transmission line. In particular, we suggest a coherent states QKD protocol which is secure against individual attacks for arbitrarily low values of the overall transmission line. Our scheme relies on specific non-Markovian properties, and cannot be implemented in ordinary Markovian channels characterized by uniform losses.
description: 4 pages, 2 figures
O'ZBEKISTONDA BUDJET TASHKILOTLARIDA BUDJET MABLAG'LARI BO'YICHA DEBITOR VA KREDITORLAR BILAN HISOBLASHUVLAR HISOBI VA NAZORATINI TAKOMILLASHTIRISH
Creators: name: KURBANOV, ALISHER
Publisher: name: Zenodo
Year: 2024

description: Mamlakat iqtisodiyoti rivojlanishida davlat budjeti muhim o‘rin tutadi. Budjet mablag‘larining samarali boshqarilishi davlatning ijtimoiy-iqtisodiy siyosatini amalga oshirishda hal qiluvchi omil hisoblanadi. O‘zbekistonda budjet mablag‘larini boshqarish jarayonida, ayniqsa, davlat tashkilotlari tomonidan kreditor va debitor qarzlarining hisobi va nazorati dolzarb masalalardan biridir. Kreditor va debitor qarzlarining samarali boshqarilishi budjet tashkilotlarining moliyaviy intizomini oshiradi, davlat mablag‘laridan oqilona foydalanishga imkon yaratadi va budjetni maqbul darajada barqaror saqlashga yordam beradi. Ushbu maqolada O‘zbekiston tajribasi hamda xalqaro amaliyotda budjet tashkilotlarida mablag‘larni boshqarish va qarzlar bo‘yicha hisob-kitoblarni takomillashtirish yo‘llari ko‘rib chiqiladi.
Transcutaneous partial oxygen tension and skin blood flow monitoring: Continuous, noninvasive measures of cardiorespiratory change
Creators: name: Greenlee, Mark W.
name: Akita, M.
Publisher: name: Universität Regensburg
Year: 1985
Subjects: subject: 150 Psychologie

description: Transcutaneous partial oxygen tension (tc pO₂) and skin blood flow (via heat clearance) were measured noninvasively in 22 male subjects who performed stress-inducing tasks (i.e. hand-grip exercise, cold pressor test, breath holding, hyperventilation and mirror-tracing). An analysis of variance and covariance was conducted for tc pO₂ heat clearance, heart rate, respiration rate, finger pulse volume and systolic/diastolic blood pressure. Results indicate that tc pO₂ can depict phasic cardiorespiratory challenge. Heat clearance proved to be less sensitive to the demand conditions used here. An analysis of covariance revealed a negative correlation between tc pO₂ and blood pressure and respiration rate, as well as a positive correlation between tc pO₂ and heat clearance. This suggests that phasic changes in tc pO₂ are induced by both peripheral vasomotor activity and changes in arterial pO₂.
Betrachtungsweisen von FAIR im Kontext Open Data und Open Science. Digitale Gespräche.
Creators: name: Strauch-Davey, Annette
Publisher: name: Zenodo
Year: 2021
Subjects: FDM
Forschungsdaten
Forschungsdatenmanagement
Open Science

description: Diese Materialien sind im Rahmen eines Workshops entstanden. Sie werden nach der Veranstaltung "offen" zur Verfügung gestellt.

 https://www.uni-hildesheim.de/zfdw/web/index.php/digitarium-2020 Schulungsmaterialien, die von "forschungsdaten.info" empfohlen worden, sind für die Übungen des Workshops berücksichtigt worden: https://www.forschungsdaten.info/praxis-kompakt/tutorials-kurse-und-anleitungen/
Klinische Einführung der Volumetric Modulated Arc Therapy (VMAT)
Creators: name: Dobler, Barbara
name: Treutwein, Marius
name: Goetzfried, Thomas
name: Alvarez Moret, Judith
name: Gröger, Christian
name: Härtl, Petra
name: Weidner, Karin
name: Pohl, Fabian
name: Kölbl, Oliver
Publisher: name: Universität Regensburg
Year: 2010
Subjects: subject: 530 Physik
subject: 610 Medizin

description: Fragestellung: Die Volumetric Modulated Arc Therapy (VMAT) als Erweiterung der IMRT wurde in Planvergleichsstudien als eine viel versprechende Technik präsentiert, die es erlaubt, bei vergleichbarer Planqualität eine Reduktion der Bestrahlungszeiten zu erreichen. Kommerzielle Systeme sind erst seit kurzer Zeit verfügbar, so dass klinische Erfahrungen bisher nur sehr begrenzt zur Verfügung stehen. Im Folgenden wird die Einführung der VMAT in die klinische Routine vorgestellt. Methodik: Für die Durchführung der VMAT stehen am Universitätsklinikum Regensburg ein Elekta SynergyS Linearbeschleuniger sowie das Planungssystem Oncentra MasterPlan v.3.3 der Firma Nucletron zur Verfügung. Zunächst wurde ein Konzept für die maschinenabhängige Qualitätssicherung erstellt. Hierbei wird die Stabilität von Dosis, Flatness und Symmetrie bei Rotation und Veränderung der Dosisleistung, sowie die Stabilität der dynamischen Leafbewegung überprüft. Für verschiedene Tumorentitäten wurden Vergleichsplanungen mit VMAT und IMRT durchgeführt. Vier repräsentative VMAT Pläne wurden mit Hilfe des 2DArrays MatriXX (IBA Dosimetry) dosimetrisch verifiziert. Zur Überprüfung der korrekten Wiederaufnahme der Bestrahlung nach Unterbrechungen wurde für zwei VMAT Pläne die dosimetrische Verifikation wiederholt, wobei die Bestrahlung mehrfach unterbrochen wurde. Ergebnisse: Die Auswertung der dosimetrischen Verifikation der individuellen Patientenpläne mit Hilfe des Gammaindex für 3% Dosistoleranz und 3mm Distance to Agreement ergab eine gute Übereinstimmung von berechneter und gemessener Dosisverteilung. Gemittelt über alle Pläne war das Gammakriterium in 97.4% der Pixel erfüllt, mit einem Durchschnittswert von Gamma = 0.4 im gesamten Messbereich. Die Planverifikation mit wiederholten Unterbrechungen zeigte Abweichungen von <1% in 98.8% der Messpunkte, bei einem Mittelwert von 0.2%. Schlussfolgerungen: Es wurde ein Konzept zur Qualitätssicherung von VMAT erarbeitet und für die klinische Inbetriebnahme der VMAT genutzt.Der Elekta SynergyS zeigte sich stabil unter Rotationen und Änderung der Dosisleistung, sowie gegenüber Unterbrechung und Wiederaufnahme der Therapie. Die individuelle Planverifikation zeigte gute Übereinstimmung von berechneter und gemessener Dosisverteilung, so dass der klinische Einsatz von VMAT aufgenommen werden kann.
description: doi und URL beziehen sich auf den kompletten Tagungsband
Higher-harmonic adaptation and the detection of squarewave gratings
Creators: name: Greenlee, Mark W.
name: Magnussen, S.
Publisher: name: Universität Regensburg
Year: 1987
Subjects: subject: Linear filtering; Adaptation; Low frequency detection; Complex gratings
subject: 150 Psychologie

description: Adaptation to a high contrast sinewave grating of 1 c/deg spatial frequency causes a large increase in the contrast threshold for a 1 c/deg test grating, but fails to raise the threshold for a squarewave grating of 0.33 c/deg, although the sensitivity of the “channel” tuned to both the third and fifth harmonic components of the squarewave test grating should be thoroughly suppressed. Following sequential adaptation to sinewave gratings of 1 and 3 c/deg spatial frequency, detection of squarewave gratings at 0.33 c/deg likewise remains unaffected. In contrast, after adaptation to a 0.33 c/deg squarewave grating with missing fundamental the contrast threshold for a squarewave test grating of the same frequency is increased by 0.25 log unit, although the higher harmonic component frequencies are less affected than by sequential sinewave adaptation. The results suggest that independent spatial frequency channels detecting harmonic components are not alone sufficient to account for the visibility of low frequency squarewaves.
On sums of Ramanujan sums
Creators: name: Chan, Tsz Ho
name: Kumchev, Angel V
Publisher: name: arXiv
Year: 2010
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics

description: Let $c_q(n)$ denote the Ramanujan sum modulo $q$, and let $x$ and $y$ be large reals, with $x = o(y)$. We obtain asymptotic formulas for the sums $$\sum_{n \le y}(\sum_{q \le x} c_q(n))^k \qquad (k = 1, 2).$$
Isle of Knots, a novel : religion in Isle of Knots and related fantasy fiction for youth, an exegesis
Creators: name: Hirsch, Russell Francis
Publisher: name: University of British Columbia
Year: 2017

description: In this thesis, I use the ideas of mythologist Joseph Campbell as a framework to compare and contrast the portrayal of religion in my own novel, Isle of Knots, with C.S. Lewis’ The Chronicles of Narnia and Philip Pullman’s His Dark Materials. Campbell argues that myths and religious tales must be interpreted as metaphors rather than literal facts (as has been common in the Christian tradition). I explore how The Chronicles of Narnia reimagines Christian myth in a fantasy world and contrasts Campbell’s view by emphasizing literal belief in God. His Dark Materials likewise re-envisions Christian myths but attacks literal belief in religion and encourages an experience of the divine in our own world through physical, material means. Pullman’s critique of literalism bears some similarities to Joseph Campbell’s scholarship, but through my novel, Isle of Knots, I strive to present a fictional world even more fully attuned to Campbell’s ideas. My protagonist starts with literal beliefs in a fictional religion similar to Christianity but eventually relinquishes such beliefs in favour of a primarily metaphorical interpretation of gods and mythologies. Through this metaphorical interpretation, my characters must also grapple with Campbell’s morally ambiguous view of the divine, which transcends the duality of good and evil.
Development of angina pectoris pain and cardiac events in asymptomatic patients with myocardial ischemia
Creators: name: Droste, C.
name: Ruf, G.
name: Greenlee, Mark W.
name: Roskamm, H.
Publisher: name: Universität Regensburg
Year: 1993
Subjects: subject: 150 Psychologie

description: A total of 389 patients with angiographically determined coronary artery disease, who exhibited a complete absence of angina pectoris in the presence of reproducible myocardial ischemia, were studied in a follow-up investigation. After an initial coronary angiogram, anti-ischemic medication was prescribed as treatment. After a mean follow-up time of 4.9 years (maximum 13.4 years) patients were sent a questionnaire that assessed any new development of angina pectoris pain and cardiac events. In 48 of these patients a second angiogram was recorded after a mean period of 4.2 years. Asymptomatic patients had a worse prognosis than an age-adjusted normal population. After 5 and 10 years, 9 and 26% of the patients, respectively, had died, nonfatal cardiac events (myocardial infarction, bypass surgery or percutaneous transhiminal coronary angioplasty) occurred after 5 and 10 years in 19 and 46%, respectively. A large number of initially asymptomatic patients developed angina pectoris pain over the follow-up period (34% after 5 years, 58% after 10 years). Novel angina pectoris pain often preceded cardiac events by months to years. Multivariate analysis indicated that vessel disease (p = 0.0001) and degree of ischemia (defined by ST-segment depression free exercise tolerance, p = 0.04) proved to have independent predictive value with respect to mortality rate. Newly developed angina pectoris was associated with an increase in objective signs of myocardial ischemia and a progression in coronary stenosis. The results indicate that patients who originally had myocardial ischemia with a marked absence of pain can develop angina pectoris over the course of years and that newly developed pain often precedes cardiac events.
Comprehensive P vs NP -- Or, P as she is NP; the new guide of the conversion in polynomial-time and exponential-time.
Creators: name: R. Wright, Nicholas
Publisher: name: figshare
Year: 2019
Subjects: subject: Applied Computer Science
subject: Computation Theory and Mathematics
subject: FOS: Computer and information sciences
subject: 80299 Computation Theory and Mathematics not elsewhere classified
subject: 80201 Analysis of Algorithms and Complexity
subject: 80401 Coding and Information Theory
subject: 80203 Computational Logic and Formal Languages
subject: Theoretical Computer Science

description: We use the whole order approach to solve the problem of P versus NP. The relation of the whole order within a beautiful order is imperative to understanding the total order. We also show several techniques observed by the minimum element, we call a logical minimum. The perfect zero-knowledge technique will deliver exactly the same. We conclude with a demonstration of the halting problem.
Psychophysiology of type A behavior pattern: A critical analysis
Creators: name: Myrtek, M.
name: Greenlee, Mark W.
Publisher: name: Universität Regensburg
Year: 1984
Subjects: subject: 150 Psychologie

description: Based on an analysis of 45 studies recently reported in the literature and data from a psychophysiological investigation, the hypothesized physiological mechanisms underlying Type A behavior and the methods used to determine Type A behavior (e.g., Structured Interview, SI, and the Jenkins Activity Survey, JAS) are tested. After determining behavior type with both the SI and JAS, subjects (N = 58 physical-education students) participated in a laboratory/field experiment with two replications consisting of the following conditions: (1) rest, (2) mental arithmetic, (3) reaction time test, (4) preparing and giving a speech, (5) Cold Pressor Test, (6) bicycle ergometric exercise, and (7) 1000 m run. Blood pressure, heart rate, stroke volume, cardiac output, ventricular ejection time, pulse volume amplitude, pulse transit time, pulse wave velocity, electrodermal activity, respiratory volume, oxygen uptake, and uric catecholamine levels were measured. Results of the analysis of the literature indicate that, with the exception of change scores on systolic blood pressure, mean differences on the physiological measures exhibited by Type A and B men are primarily not significant. The Structured Interview shows only a modest inter-rater reliability. The Jenkins Activity Survey demonstrates relatively low stability upon retest and fails to show sufficient internal consistency. Correlations between these measures are low. No consistent differences on physiological measures could be found in our subjects based on behavior type (according to SI or JAS criteria), although the challenging conditions were selected to elicit Type A behavior. For our data, differences between Types A and B were also not found for systolic blood pressure, regardless of which behavioral assessment method was employed.
On Fluctuations of Conserved Charges : Lattice Results Versus Hadron Resonance Gas
Creators: name: Huovinen, Pasi
name: Petreczky, Peter
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Lattice (hep-lat)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We compare recent lattice results on fluctuations and correlations of strangeness, baryon number and electric charge obtained with p4 improved staggered action with the prediction of hadron resonance gas model. We show that hadron resonance gas can describe these fluctuations reasonably well if the hadron properties are as calculated on the lattice.
description: 4 pages, LaTeX, uses jpconf.cls, to appear in the proceedings of 26th Winter Workshop on Nuclear Dynamics
Decolonising Family Violence Intervention Orders in the South Sudanese Australian Community in Victoria
Creators: name: Anyieth, Akuch
Publisher: name: La Trobe
Year: 2024
Subjects: classificationCode: 440213
subject: Race/ethnicity and crime
classificationCode: 440209
subject: Gender and crime
classificationCode: 440201
subject: Causes and prevention of crime
classificationCode: 480413
subject: Race, ethnicity and law
classificationCode: 480405
subject: Law and society and socio-legal research

description: A thesis submitted in total fulfilment of the requirement for the degree of Doctor of Philosophy to the Department of Social Inquiry, School of Humanities and Social Sciences, College of Arts, Social Sciences and Commerce, La Trobe University, Victoria, Australia.
Transition from Au to pseudo-Ga catalyzed growth mode observed in GaAs nanowires grown by molecular beam epitaxy
Creators: name: Soda, Marcello
name: Rudolph, Andreas
name: Schuh, Dieter
name: Zweck, Josef
name: Bougeard, Dominique
name: Reiger, Elisabeth
Publisher: name: Universität Regensburg
Year: 2012
Subjects: subject: 530 Physik

description: We investigate the correlation between the Ga concentration of the catalyst droplet and the adopted crystal structure of individual GaAs nanowires grown by molecular-beam epitaxy using Au as a catalyst material. Through a postgrowth analysis the Ga content of the catalyst droplet during growth is estimated and related to the observed crystal structure of the nanowires. Depending on the Ga concentration, we observe a transition from typical Au catalyzed to pseudo-Ga assisted nanowire growth: Nanowires with low Ga concentration of the catalyst droplet during growth form predominantly wurtzite crystal structures. For Ga concentrations higher than 75 at. %, which we refer to as the pseudo-Ga assisted growth mode, the probability to form zinc-blende segments is strongly enhanced owing to the reduced droplet surface energy of the catalyst.
Effect of physical exercise on pain thresholds and plasma beta-endorphins in patients with silent and symptomatic myocardial ischaemia
Creators: name: Droste, C.
name: Meyer-Blankenburg, H.
name: Greenlee, Mark W.
name: Roskamm, H.
Publisher: name: Universität Regensburg
Year: 1988
Subjects: subject: Silent myocardial ischaemia; endorphins; naloxone; experimental pain measurement; physical exercise
subject: 150 Psychologie

description: In a double-blind study, eight patients with symptomatic myocardial ischaemia and nine with asymptomatic myocardial ischaemia were compared during physical exercise under naloxone (6 mg i.v.) or placebo. Plasma beta-endorphin, cortisol and catecholamines were measured before exercise, during maximal exercise, and 10, 20 and 60 min after exercise. A tourniquet pain test (on the forearm, under control of transcutaneous PO2), and an electrical pain test (intracutaneous electrode placed in the finger with the electrical stimulus under computer control and two-interval forced-choice psychophysical technique) were performed before exercise as well as immediately after, and 60 min after exercise. Plasma beta-endorphin levels increased significantly (P < 0.01) during exercise in symptomatic and asymptomatic patient groups; every patient showed an increase on betaendorphins during and after exercise. However, the increase found in beta-endorphins during and after exercise was significantly larger (P < 0.01) in asymptomatic than in symptomatic patients. After naloxone, this difference was no longer evident. Angina pectoris during exercise was reported with less latency in symptomatic patients (P < 0.05) and occurred in two of nine asymptomatic patients following naloxone. The time course of plasma cortisol levels exhibited the same pattern as beta-endorphins with the same significant differences between symptomatic and asymptomatic groups. Electrical pain thresholds, though on average higher in asymptomatic patients (2.21 mA vs. 0.79 mA), were not affected by exercise or naloxone. Asymptomatic patients required more time to reach pain thresholds in the tourniquet pain test (P < 0.02). After exercise, tourniquet pain thresholds were significantly lower (P < 0.01) under naloxone compared with placebo. The results suggest that there arequantitative differences in the endorphinergic regulation of pain in patients with symptomaticand asymptomatic myocardial ischaemia.
Weak convergence of the localized disturbance flow to the coalescing Brownian flow
Creators: name: Norris, James
name: Turner, Amanda
Publisher: name: arXiv
Year: 2011
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics

description: We define a new state-space for the coalescing Brownian flow, also known as the Brownian web, on the circle. The elements of this space are families of order-preserving maps of the circle, depending continuously on two time parameters and having a certain weak flow property. The space is equipped with a complete separable metric. A larger state-space, allowing jumps in time, is also introduced, and equipped with a Skorokhod-type metric, also complete and separable. We prove that the coalescing Brownian flow is the weak limit in this larger space of a family of flows which evolve by jumps, each jump arising from a small localized disturbance of the circle. A local version of this result is also obtained, in which the weak limit law is that of the coalescing Brownian flow on the line. Our set-up is well adapted to time-reversal and our weak limit result provides a new proof of time-reversibility of the coalescing Brownian flow. We also identify a martingale associated with the coalescing Brownian flow on the circle and use this to make a direct calculation of the Laplace transform of the time to complete coalescence.
description: Published at http://dx.doi.org/10.1214/13-AOP845 in the Annals of Probability (http://www.imstat.org/aop/) by the Institute of Mathematical Statistics (http://www.imstat.org). arXiv admin note: substantial text overlap with arXiv:0810.0211
Polarized morphisms between abelian varieties
Creators: name: Pazuki, Fabien
Publisher: name: arXiv
Year: 2011
Subjects: subject: Number Theory (math.NT)
subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics

description: We study in this paper some criterions to get polarized morphisms between abelian varieties. We deduce explicit dynamical systems with particular intersection properties.
DEVELOPMENT AND VALIDATION OF RP-HPLC METHOD FOR THE SIMULTANEOUS ESTIMATION OF DOMPERIDONE IN BULK AND TABLET DOSAGE FORM
Creators: name: Jerrypothula Pranitha, Koppu Udaya Bhanu Sri*, Dr.D. Venkata Ramana, Dr. Gadipally Sai Kiran
Publisher: name: Zenodo
Year: 2024

description: The development and validation of a Reverse Phase High-Performance Liquid Chromatography (RP-HPLC) method for the simultaneous estimation of domperidone in bulk and tablet dosage forms are presented. The aim of this study was to establish a precise, accurate, and reliable RP-HPLC method that meets regulatory standards for the quantification of domperidone. The analytical method was developed using a Waters HPLC system equipped with an auto-sampler and a PDA 996 detector. Chromatographic separation was achieved on a Symmetry ODS C18 column (4.6 × 150 mm, 5 µm) at a column temperature of 35ºC. The mobile phase comprised a mixture of methanol and acetone in a ratio of 35:65% (v/v), with a flow rate of 1.0 mL/min and a detection wavelength of 236 nm. The injection volume was 10 µL, and the total run time for each analysis was 6 minutes.

The method was thoroughly validated following ICH guidelines, assessing parameters such as specificity, linearity, accuracy, precision, and robustness. Results demonstrated that the RP-HPLC method is both effective and reliable for the simultaneous estimation of domperidone in bulk and tablet forms. The method exhibited high specificity and sensitivity with a good resolution of domperidone from excipients. The developed RP-HPLC method is suitable for routine quality control and analytical purposes in pharmaceutical applications, ensuring compliance with industry standards.

Keywords: Reverse Phase High-Performance Liquid Chromatography, Domperidone.
Chiral behavior of baryon magnetic moments
Creators: name: Leinweber, Derek B.
name: Young, Ross D.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: The utility of chiral effective field theory, constructed in a manner in which loop contributions are suppressed as one moves outside the power-counting regime, is explored for baryon magnetic moments. Opportunities for the study of significant chiral curvature in valence and full QCD and the nontrivial behavior of strange- and light-quark contributions to the magnetic moment of the Lambda baryon are highlighted.
description: 7 pages, 5 figures; prepared for the proceedings of Achievements and New Directions in Subatomic Physics: Workshop in Honour of Tony Thomas' 60th Birthday
Spatial-frequency discrimination of drifting gratings
Creators: name: Greenlee, Mark W.
name: Gerling, J.
name: Waltenspiel, S.
Publisher: name: Universität Regensburg
Year: 1990
Subjects: subject: Spatial-frequency discrimination; Stimulus velocity; Contrast Channels
subject: 150 Psychologie

description: Spatial-frequency discrimination thresholds were measured for briefly (300 msec) presented sinewave gratings having a contrast one logarithmic unit above detection threshold. The gratings were drifted at rates varying from 1.1 to 40 Hz. In a two-interval forced-choice paradigm thresholds were determined for vertically and obliquely oriented gratings. Three reference spatial frequencies (1, 4, 12 c/deg) were tested. For the 1 c/deg reference spatial frequency, spatial-frequency discrimination thresholds were constant over the wide range of drift rates used. For 4 and 12 c/deg reference gratings, discrimination thresholds were constant for drift frequencies up to 14 Hz. For drift frequencies beyond 14 Hz, spatial-frequency discrimination thresholds increased abruptly, rising from approx. 6% at 14 Hz to 25% at 40 Hz drift rate. Measurements with obliquely oriented gratings yielded comparable results. The increase in the spatial-frequency discrimination threshold for medium-high spatial frequencies and high temporal frequencies might reflect an increase in the spatial frequency bandwidth of the mechanisms sensitive to these stimulus frequencies.
The time course of adaptation to spatial contrast
Creators: name: Greenlee, Mark W.
name: Georgeson, M. A.
name: Magnussen, S.
name: Harris, J. P.
Publisher: name: Universität Regensburg
Year: 1991
Subjects: subject: Contrast adaptation; Gain control; Contrast thresholds; Retinal eccentricity
subject: 150 Psychologie

description: We explored the buildup and decay of threshold elevation during and after adaptation to sinewave gratings in a series of experiments investigating the effects of adapting time, adapting contrast, spatial frequency and retinal eccentricity. Contrast thresholds for vertical sinewave gratings truncated in space by a one-dimensional Gaussian envelope were measured before and after adaptation to a full-field suprathreshold grating of the same spatial frequency and orientation. Thresholds were measured intermittently after adaptation in a “seen/not-seen” single presentation procedure until these thresholds returned to baseline values. The first test grating was presented 300 msec after the offset of the adapting stimulus, and thereafter at regular intervals. At different times after adaptation, contrast thresholds were estimated by off-line analysis of the data using the QUEST algorithm. Adapting time was either 1, 10, 100 or 1000 sec and adapting contrast was either 9, 19, 29 or 39 dB (re. 1%). The test gratings were presented centered either at the fixation point or at 5 and 10 deg eccentricity along the horizontal meridian. The results suggest that up to the saturation level the buildup and the decay of adaptation to contrast is well described by a power function of time. The slope of the best fitting line on log-log axes is fairly constant for the adaptation times tested. As reported earlier, thresholds increased with adapting contrast and these contrast-dependent differences were evident 300 msec after the termination of adaptation. Adaptation at 10 deg eccentricity yielded slightly higher threshold elevations than for central vision. Based on these results, a description is given of the dynamic response of the underlying neural mechanisms.
Unintended Consequences: How New Subsidy Regulations Reduced Child Care Supply in Rural and Urban Communities
Creators: name: Jayashankar, Aparna
Publisher: name: University of Chicago
Year: 2022

description: As America’s child care landscape becomes more regulated, policymakers are grappling with whether to regulate home-based license-exempt care, commonly known as Family, Friend, and Neighbor (FFN) care. In 2017, Illinois imposed new training requirements on FFN providers in the state’s Child Care Assistance Program (CCAP). While the policy intended to improve child care quality, prior research shows that it disincentivized providers from participating in CCAP. I shed light on how child care regulation impacts rural communities - who are more dependent on home-based care - by examining: How did the threat of new training requirements affect the supply of subsidized FFN care in rural versus urban Illinois communities? Using CCAP administrative data, interviews with staff from Child Care Resource and Referral Agencies, and a triple difference-in-differences methodology, I found that announcing training requirements led to large reductions in subsidized FFN care supply across rural and urban areas. Results suggest that rural communities may have experienced a lower decrease, although this decrease was not significant due to large standard errors. Many rural providers may not have reacted to the requirements due to lack of awareness of the new policy, caused by weaker social networks and less access to internet and technology.
Semantic Query Optimisation with Ontology Simulation
Creators: name: Gupta, Siddharth
name: Thakur, Narina
Publisher: name: arXiv
Year: 2010
Subjects: subject: Information Retrieval (cs.IR)
subject: FOS: Computer and information sciences

description: Semantic Web is, without a doubt, gaining momentum in both industry and academia. The word "Semantic" refers to "meaning" - a semantic web is a web of meaning. In this fast changing and result oriented practical world, gone are the days where an individual had to struggle for finding information on the Internet where knowledge management was the major issue. The semantic web has a vision of linking, integrating and analysing data from various data sources and forming a new information stream, hence a web of databases connected with each other and machines interacting with other machines to yield results which are user oriented and accurate. With the emergence of Semantic Web framework the naïve approach of searching information on the syntactic web is cliché. This paper proposes an optimised semantic searching of keywords exemplified by simulation an ontology of Indian universities with a proposed algorithm which ramifies the effective semantic retrieval of information which is easy to access and time saving.
A choice reaction time analysis of spatial frequency discrimination
Creators: name: Greenlee, Mark W.
name: Breitmeyer, B. G.
Publisher: name: Universität Regensburg
Year: 1989
Subjects: subject: Spatial-frequency discrimination; Simple reaction time; Choice reaction time; Gratings; Contrast
subject: 150 Psychologie

description: Simple reaction time to the onset of sinewave gratings was measured as a function of spatial frequency in two observers. These results are compared to the choice reaction time required for the observer to correctly discriminate the spatial frequency of two gratings flashed sequentially. Grating contrast was either 0.75 or 1.5 logarithmic units above the detection threshold for each spatial frequency tested. The spatial phase and contrast of the reference and test gratings were varied from trial to trial by small random amounts to eliminate fixed cues other than the difference frequency. The spatial frequency difference between the reference and test grating was either 0.125, 0.25 or 0.5 octave. As has been earlier reported, simple reaction time increases with increasing spatial frequency. Contrary to this, choice reaction time first increases (up to 4c/deg) and then decreases. We derived the time required by the observer to make a spatial frequency judgement by subtracting the simple reaction time from the choice reaction time for a given spatial frequency and contrast. The maximum decision time occurs in the medium spatial frequency range (between 1 and 4 c/deg), at which frequencies we are most sensitive. The time required to make a correct spatial-frequency discrimination decreases with increasing spatial-frequency difference. The decision time is, however, fairly invariant over a large range of suprathreshold contrast levels. The findings suggest that the decision time for spatial frequency discrimination increases with the number of mechanisms involved.
GEMINI_T1.1_Market Analysis and Innovation Drivers_Survey_and_Results
Creators: name: Vassallo, Jose Manuel
name: Garrido, Laura
Publisher: name: Zenodo
Year: 2024

description: The objective of the designed survey was identify emerging technical and social innovation drivers that could impact the implementation of New Shared Mobility Services. The survey was conducted online by GEMINI partner Universidad Politecnica de Madrid between September 27 and October 26, 2023.
Modellings for Belief Change: Base Contraction, Multiple Contraction, and Epistemic Entrenchment (Preliminary Report)
Creators: name: Rott, Hans
Publisher: name: Universität Regensburg
Year: 1992
Subjects: subject: 004 Informatik
subject: 100 Philosophie

description: Titel des Bandes:Logics in AI. European Workshop JELIA'92 Berlin, Germany, September 7–10, 1992; Proceedings. Hg. v. Pearce, D./Wagner, G.
2 legit 2 quit : the effect of institutions on the perceptions of legitimacy in the Great Bear Rainforest
Creators: name: Henry, Alice Rose
Publisher: name: University of British Columbia
Year: 2017

description: Collaborative planning in natural resource management involves a number of non-state actors and different institutions to make decisions that fall under the realm of governance. However, legitimacy, a quality considered necessary in successful governance, has not been thoroughly investigated empirically. This research examines the perceived importance of three different dimensions of legitimacy—representativeness, meaningfulness, and effectiveness—by actors in the Great Bear Rainforest (GBR) decision-making process and the perceived role of three institutions—shadow networks, bridging organizations, and boundary objects—in relation to the legitimacy of the GBR plan. Based on semi-structured interviews (N=17), this research provides an empirical investigation of the nuances of legitimacy in collaborative natural resource planning and the institutions involved in that planning from the perspective of those involved or otherwise affected by the GBR decision-making process. The results illustrate the importance of representing the different participants’ interests and values in the final outcome, trustworthy relationships to build accountability and ensure commitments, strategically using representation to ensure a fair and meaningful decision-making process, and using small groups of capable negotiators to ensure the different values and interests are included at the different levels of decision-making. These observations highlight the importance of not just representation, but meaningful engagement, of actors in negotiating processes. They also emphasize the importance of shadow networks for brainstorming alternative solutions and creating personal relationships; of bridging organizations to effectively represent and coordinate the interests of a collective of actors that do not always have the same goals; and of boundary objects to reflect the interests and values of actors, thereby ensuring effectiveness through commitment to implementation. [An errata to this thesis/dissertation was made available on 2019-06-18.]
Systolic volume of homology classes
Creators: name: Babenko, Ivan K.
name: Balacheff, Florent
Publisher: name: arXiv
Year: 2010
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 53C23, 20J06, 20F99

description: Given an integer homology class of a finitely presentable group, the systolic volume quantifies how tight could be a geometric realization of this class. In this paper, we study various aspects of this numerical invariant showing that it is a complex and powerful tool to investigate topological properties of homology classes of finitely presentable groups.