cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Second Order Corrections to the Magnetic Moment of Electron at Finite Temperature
Creators: name: Masood, Samina S.
name: Haseeb, Mahnaz Q.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Magnetic moment of electron at finite temperature is directly related to the modified electron mass in the background heat bath. Magnetic moment of electron gets modified when it couples with the magnetic field at finite temperature through its temperature dependent physical mass. We show that the magnetic moment of electron becomes a complicated function of temperature and even change its temperature dependent behavior around the energies for primordial nucleosynthesis. We calculate the self-mass induced thermal contributions to the magnetic moment of electron, up to the two loop level, for temperatures valid around the era of primordial nucleosynthesis. A comparison of thermal behavior of the magnetic moment is also quantitatively studied in detail, around the temperatures below and above nucleosynthesis temperature range.
Die Abhängigkeit der Porosität und der Feuchtedehnung silikatischer Keramik durch Zumischungen von Alkali- und Erdalkaliverbindungen in Hinblick auf die Frostbeständigkeit
Creators: name: Kretschmer, Sophie
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2022
Subjects: subject: 549

description: Diese Arbeit beschäftigt sich mit der Porosität und der Feuchtedehnung silikatischer Grobkeramiken in Hinblick auf ihre Frostbeständigkeit. Es wurden vier keramischen Massen, die zur Dachziegelherstellung verwendet werden, charakterisiert und denen ausgewählte Alkali- und Erdalkaliverbindungen als Karbonate und Silikate in unterschiedlichen Konzentrationen zugemischt. Der Einfluss der Zumischungen auf die Entwicklung der Porosität und der Feuchtedehnung wurde anschließend untersucht. Die höchsten Porositätssenkungen erzielten Pottasche bei Brenntemperaturen unter 1000 °C und Spodumen bei Sintertemperaturen von 1050 °C. Die Feuchtedehnung war bei Brenntemperaturen von 1050 °C generell geringer als bei Temperaturen unterhalb von 1000 °C. Die Zugabe von Spodumen erzielte bei jeder Zumischungskonzentration eine Senkung der Feuchtedehnung, unabhängig der gewählten Brenntemperatur. Im Rahmen der Untersuchungen konnte zudem für eine Betriebsmasse ein Frostbeständigkeitsmodell erstellt werden.
description: The subject of this work is the porosity and moisture expansion of silicate heavy ceramics with regard to their frost resistance. Four ceramic masses used for roof tile production were characterized and selected alkali and alkaline earth compounds were added to them as carbonates and silicates in different concentrations. The influence of the admixtures on the development of porosity and moisture expansion was then investigated. The highest porosity reductions were achieved by potash at firing temperatures below 1000 °C and by spodumene at sintering temperatures of 1050 °C. Moisture expansion was generally lower at firing temperatures of 1050 °C than at temperatures below 1000 °C. The addition of spodumene achieved a reduction in moisture expansion at any admixture concentration, regardless of the firing temperature selected. As part of the investigations, it was also possible to create a frost resistance model for one of the ceramic masses.
Constraining A String Gauge Field by Galaxy Rotation Curves and Perihelion Precession of Planets
Creators: name: Cheung, Yeuk-Kwan E.
name: Xu, Feng
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We discuss a cosmological model in which the string gauge field coupled universally to matter gives rise to an extra centripetal force and will have observable signatures on cosmological and astronomical observations. Several tests are performed using data including galaxy rotation curves of 22 spiral galaxies of varied luminosities and sizes, and perihelion precessions of planets in the solar system. The rotation curves of the same group of galaxies are independently fit using a dark matter model with the generalized Navarro--Frenk--White (NFW) profile and the string model. A Remarkable fit of galaxy rotation curves is achieved using the one-parameter string model as compared to the three-parameter dark matter model with the NFW profile. The average $χ^2$ value of the NFW fit is 9\% better than that of the string model at a price of two more free parameters. Furthermore, from the string model, we can give a dynamical explanation for the phenomenological Tully-Fisher relation. We are able to derive a relation between field strength, galaxy size and luminosity, which can be verified with data from the 22 galaxies. To further test the hypothesis of the universal existence of the string gauge field, we apply our string model to the solar system. Constraint on the magnitude of the string field in the solar system is deduced from the current ranges for any anomalous perihelion precession of planets allowed by the latest observations. The field distribution resembles a dipole field originating from the Sun. The string field strength deduced from the solar system observations is of a similar magnitude as the field strength needed to sustain the rotational speed of the Sun inside the Milky Way. This hypothesis can be tested further by future observations with higher precision.
description: 36 pages, 33 figures, published version
The utilization and timing of neuroimaging and the role of neurophysiological techniques in the diagnostic evaluation of transient ischemic attack
Creators: name: Edwards, Jodi Dawn
Publisher: name: University of British Columbia
Year: 2014

description: Background: Transient ischemic attack (TIA) is an episode of transient focal neurological deficit with an ischemic vascular cause. Neuroimaging can detect ischemia, determine etiologic mechanisms, and identify stroke risk after TIA, and early assessment reduces stroke risk. Despite guidelines recommending imaging, Canadian hospital-based studies have reported underutilization and delays in the use of imaging procedures after TIA. However, as many TIA patients are not evaluated in hospital, population-based studies are required to determine whether imaging use increased after guideline implementation and characterize trends in imaging timing after TIA. Although administrative databases enable population-based studies of procedure utilization and timing, previous studies have been restricted to hospital-based cohorts, as physician claims data lack validity for TIA ascertainment. Further, as many patients are not evaluated acutely, the assessment of alternative techniques may inform the subacute effects of transient ischemia. Methods: In Chapter 2, sensitivity, specificity, and positive predictive value were used to evaluate the validity of multiple algorithms for TIA case ascertainment from physician claims data. Chapters 3 and 4 provided estimates of imaging utilization before and after guideline implementation and trends in imaging timing in population-based TIA cohorts. Chapter 5 used transcranial magnetic stimulation to measure thresholds for intracortical inhibition and facilitation subacutely after TIA and assessed the relationship of these thresholds with clinical features of TIA. Summary of Findings: The algorithms for TIA ascertainment using physicians claims data evaluated in Chapter 2 were not valid, informing the case definition for subsequent population-based analyses. Chapter 3 showed increases in neuroimaging use but overall poor utilization after the implementation of practice guidelines, with differences by modality and diagnostic setting. In Chapter 4, no changes in imaging timing after TIA were observed over the study period. In Chapter 5, alterations in intracortical thresholds after TIA on transcranial magnetic stimulation were observed and correlated with clinical risk scores. Conclusions: This dissertation contributes new knowledge of population-based practices of the use and timing of neuroimaging after TIA and has implications for future research examining barriers for timely access to imaging techniques and the utility of alternative techniques in the diagnostic evaluation of individuals with TIA
Per Bocca d'altri. Indios, gesuiti e spagnoli in due documenti segreti sul Perů del XVII secolo
Creators: name: Laurencich Minelli, Laura
name: Domenici, Davide
name: Poppi, Cesare
name: Numhauser, Paulina
name: Zuidema, Tom R.
name: Bongiorno, Vito
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2007
Subjects: M-STO/07 Storia del Cristianesimo e delle Chiese
M-STO/06 Storia delle religioni
M-STO/02 Storia moderna
M-STO/09 Paleografia
M-DEA/01 Discipline demoetnoantropologiche
M-FIL/05 Filosofia e teoria dei linguaggi

description: Il volume contiene una serie di testi concernenti lo studio dei Documenti Miccinelli, una serie di manoscritti relativi alla storia del Perù coloniale e alla figura del gesuita Blas Valera.
Limited time series with a unit root
Creators: name: Cavaliere, Giuseppe
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2003
Subjects: SECS-P/05 Econometria

description: This paper develops an asymptotic theory for integrated and near-integrated time series whose range is constrained in
some ways. Such a framework arises when integration and cointegration analysis are applied to persistent series which are bounded either by construction or because they are subject to control. The asymptotic properties of some commonly used integration tests are discussed; the bounded unit root distribution is introduced to describe the limiting distribution of the first-order autoregressive coefficient of a random walk under range constraints. The theoretical results show that the presence of such constraints can lead to drastically different asymptotics. Since deviations from the standard unit root theory are measured through noncentrality parameters, simple measures of the impact of range constraints on the asymptotic distributions are obtained. Finally, the proposed asymptotic framework provides an extremely adequate approximation of the finite sample properties of the unit root statistics under range constraints.
Additional file 1 of Analysis of a novel mutant allele of GSL8 reveals its key roles in cytokinesis and symplastic trafficking in Arabidopsis
Creators: name: Saatian, Behnaz
name: Austin, Ryan
name: Tian, Gang
name: Chen, Chen
name: Nguyen, Vi
name: Kohalmi, Susanne
name: Geelen, Danny
name: Cui, Yuhai
Publisher: name: figshare
Year: 2018
Subjects: subject: Biophysics
subject: Biochemistry
subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Pharmacology
subject: Evolutionary Biology
subject: Developmental Biology
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Plant Biology

description: Figure S1. Mapping of the essp8 mutation. Figure S2. ESSP8 is an allele of GSL8. Figure S3. Morphological phenotype of gsl8 mutantsâ primary root showing severe defects in root tissue patterning. Figure S4. Genetic complementation of essp8 seedlings. Figure S5. Morphological phenotype of cytokinesis-defective mutants. Figure S6. Movement of fluorescent probes in essp8 hypocotyls. Figure S7. SCR relative expression in essp8 primary root compared to WT. Figure S8. Phylogenetic tree of Arabidopsis GSLs. Figure S9. Subcellular localization of the putative callose synthase complex components using their YFP fusions in transiently transformed N. bentamiana epithelial cell. Figure S10. FRET assay: Images of CFP and YFP fluorescent before and after bleaching. Figure S11. Morphological phenotype of the XVE:aMIRGSL8/GSL10 seedlings. (PDF 10100Â kb)
The income equality gap between rich and poor
Creators: name: Webb, Raymond
Publisher: name: International Academy of Practical Theology. Conference Series
Year: 2021

description: While there is some global improvement in poverty reduction, better healthcare, and other measures, the income gap between rich and poor is increasing, with its negative relationship to educational opportunity, healthcare, longevity, happiness, and social cohesiveness. Besides socio-economic harm, personal and collective agency are diminished, and the norms of distributive justice are violated. After reviewing the situation, this paper explores economic and practical theological principles relevant to income inequality. Political-economic remedies are named. Where the “1%” invade, occupy, and control the political, economic, and cultural space of all, a kind of colonialism (“stealth colonialism” if you will) is present. Practical theologians should understand and highlight the scope of the problem and its consequences.
description: International Academy of Practical Theology. Conference Series, Vol 2 (2021): (De)coloniality and religious practices: liberating hope; edited by Valburga Schmiedt Streck, Júlio Cézar Adam and Cláudio Carvalhaes
Antibürgerliche Lagerbildung : das nationale und das sozialistische Lager in Halle 1918-1933
Creators: name: Schmitt, Dorothea
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2016
Subjects: subject: 940

description: In Halle existierten während der Weimarer Republik zwei gegensätzliche politische Lager, eine nationales und ein sozialistisches, die die politische Situation vor Ort prägten, zur Erosion einer politischen Mitte führten und exemplarisch für die Radikalisierung in der Weimarer Republik standen. Bei der vorliegenden Lokalstudie zu den politischen Verhältnissen in Halle in der Weimarer Republik wurde anhand thematischer Schwerpunktbereiche analysiert, wie sozialistisches und nationales Lager in ihrer gegenseitigen Frontstellung in Halle aufeinander bezogen waren und deren Aufbau und Auftreten im Kontext der lokalen Parteienstrukturen dargestellt. Die Frontstellung des nationalen Lagers gegen links bildete für Halle und die Region eine entscheidende Bedingung für den Aufstieg der Nationalsozialisten. Ein detaillierter Zugang zu beiden politischen Lagern zeigt sowohl die Beziehungen innerhalb der Lager als auch zwischen den Lagern auf.
description: During the Weimar Republic, two opposing political camps existed in Halle, one nationalist and one socialist, which shaped the local political situation, led to the erosion of a political center, and exemplified the radicalization in the Weimar Republic. In this local study of political conditions in Halle during the Weimar Republic, is analyzed how the socialist and national camps related to one another in their mutual frontal position in Halle and presented their structure and appearance in the context of the local party structures. For Halle and the region, the national camp's front position against the left was a decisive condition for the rise of the National Socialists. A detailed approach to both political camps shows the relations within the camps as well as between them.
Untersuchungen zur Ursache der Anreicherung des AXL-Proteins durch den AXL-Inhibitor BMS-777607
Creators: name: Lauter, Markus
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2021
Subjects: subject: 610

description: Für die Rezeptortyrosinkinase AXL wurde ein Einfluss auf Apoptose, Proliferation, Migration und Resistenz gegen Chemotherapeutika in Krebszellen beschrieben. Mehrere AXL-Inhibitoren wurden entwickelt, darunter BMS777607. Durch Behandlung von Krebszellen mit BMS777607 kam es zu einer Anreicherung der AXL-RTK. Diese Anreicherung habe ich mittels Western Blot und Durchflusszytometrie nachvollzogen und den Mechanismus untersucht. Auf Ebene der AXL-mRNA, Translation, Glykosylierung und der Ektodomänen-Abspaltung konnte keine signifikante Veränderung festgestellt werden. Eine signifikante Hemmung des lysosomalen Abbaus durch verminderte Ubiquitinierung und reduzierte Internalisierung war erkennbar. Mittels kinaseinaktiver AXL-Mutante (K567R) konnte zudem die Notwendigkeit der Aktivität der Kinase gezeigt werden. Den verminderten lyososomalen Abbau erachte ich als ursächlich für die Anreicherung. Dies sollte bei der zukünftigen Entwicklung zielgerichteter Therapeutika berücksichtigt werden.
description: The receptor tyrosine kinase AXL was shown to be assiciated with apoptosis, proliferation, migration and resistence to chemotherapie in cancer cells. Several AXL inhibitor have been developed, including BMS777607. After treatmend of cancer cells with BMS777607 an accumulation of AXL-RTK was observed. This accumulation was reproduced using western blot and flow cytometry and the mechanism was enlightened. Regarding the amount of AXL-mRNA, translation, glycosylation and receptor shedding no significant difference was observed due to AXL inhibition. A significant reduction in lysosomal degradation caused by inhibited ubiquitination and internalization was detected. The activity of the kinase domain of AXL was shown to be necessary for accumulation, tested with the kinase dead mutant AXL (K567R). In conclusion i consider the reduced lyososomal degradation to cause the accumulation. This should be taken into account in the further developent of targeted therapeutics.
Unit root tests under time-varyng variances
Creators: name: Cavaliere, Giuseppe
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2003
Subjects: SECS-P/05 Econometria

description: The paper provides a general framework for investigating the effects of permanent changes in the variance of the errors of an autoregressive process on unit root tests. Such a framework — which is based on a novel asymptotic theory for integrated
and near integrated processes with heteroskedastic errors — allows to evaluate how the variance dynamics affect the size and the power function of unit root tests. Contrary to previous studies, it is shown that under permanent variance shifts, the
conventional critical values can lead both to oversized and undersized
tests. The paper concludes by showing that the power function of the unit root tests is affected by non-constant variances as well.
Persönlichkeitsunterschiede von Streichern, Holzbläsern, Blechbläsern und Akkordeonisten (Hobby- und Berufsmusiker) und deren Einflussfaktoren
Creators: name: Schattschneider, Margarete Sophie
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2022
Subjects: subject: 780

description: Die vorliegende Untersuchung befasst sich mit Persönlichkeits- und Geschlechtsunterschieden zwischen Musikern (N = 429) und einer Kontrollgruppe (N = 429), den Unterschieden innerhalb vier Instrumentalistengruppen (207 Streicher, 89 Holzbläser, 56 Blechbläser und 77 Akkordeonisten) sowie Einflussfaktoren wie Spieldauer, Geschlecht und Variablen des Umfelds. Die Stichprobe bestand aus 358 Hobby- und 71 Berufsmusikern im Alter von 15 bis 79 Jahre und wurde mit Hilfe des NEO-PI-R analysiert. Die Musikergruppe unterschied sich statistisch signifikant zur Kontrollgruppe in den Dimensionen Verträglichkeit und Gewissenhaftigkeit. Zwischen den Gruppen zeigten sich kleine signifikante Effekte, wie z.B. Streicher = am stärksten offen für neue Erfahrungen; Blechbläser = geringstes Maß an Offenheit für Gefühle und Akkordeonisten = höchste Ausprägung an Geselligkeit. Zudem konnten Zusammenhänge zwischen Variablen des Umfelds und der Spieldauer des Hauptinstruments nachgewiesen werden.
description: The present study deals with personality and gender differences between musicians (N = 429) and a control group (N = 429), the differences within four instrumentalist groups (207 strings, 89 woodwinds, 56 brass and 77 accordionists) as well as influencing factors such as playing time, gender and environmental variables. The sample consisted of 358 amateur and 71 professional musicians aged 15 to 79 and was analysed using the NEO-PI-R. The group of musicians differed statistically significant from the control group in the dimensions of agreeableness and conscientiousness. There were small significant effects between the groups, such as string players = most open to new experiences; brass players = lowest level of openness to feelings and accordionists = highest level of sociability. In addition, connections between variables of the environment and the playing time of the main instrument could be proven.
Isolierte Frakturen der Sinus frontalis Vorderwand und des Orbitadaches : eine retrospektive Untersuchung unter spezieller Betrachtung der Osteosynthesematerialien und Komplikationen
Creators: name: Weinmann, Stephan
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2022
Subjects: subject: 610

description: In der Universitätsklinik und Poliklinik für Mund-, Kiefer- und Plastische Gesichtschirurgie der Martin-Luther-Universität Halle-Wittenberg wurden im Zeitraum von 2011-2017 18 Patienten mit isolierten Frakturen der Sinus frontalis Vorderwand und optional des Orbitadaches operativ behandelt. Ziel der retrospektiven Auswertung war eine genaue Betrachtung der verwendeten Osteosynthesematerialien und aufgetretenen Komplikationen. Osteosynthetisiert wurde überwiegend mit Mikroplatten (n=10), gefolgt von Titangittern (n=2), bioresorbierbaren Kunststoffen (n=2), Gewebeklebern (n=2), einem autologen Knochentransplantat und einem PSI. In 11 Fällen traten postoperativ keine Komplikationen auf. Die verwendeten Osteosyntheseverfahren konnten nahezu komplikationsfrei durchgeführt werden und stellten ein suffizientes Mittel zur Rekonstruktion dar. Aus dem eigenen Patientengut und der Fachliteratur konnten darüber hinaus Osteosynthesekonzepte für verschiedene Frakturtypen abgeleitet werden.
description: 18 patients with isolited anterior table fractures of the frontalis sinus and the orbital roof were treated at the department of oral and maxillofacial surgery at the Martin-Luther-Universität Halle-Wittenberg between the years 2011 and 2017. The purpose of this study was a retrospective analysis, with special focus on used osteosynthesis systems and occured complications. For osteosynthesis we mainley used mikroplates (n=10), followed by titanium meshes (n=2), biodegradable materials (n=2), tissue adhesives (n=2), one autologous bone graft and one PSI. In 11 cases no postoperative complications occurred. The used osteosynthesis systems were nearly free of complications and a sufficient way of reconstruction. From our own patients and literature we concluded on osteosynthesis concepts for different types of these fractures.
Challenges of initial TVET teacher training in Indonesia : empirical analysis of skills deficit of mechanical engineering teachers
Creators: name: Alamsyah, Moh Sanni Mufti
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2022
Subjects: subject: Initial TVET Teacher training
subject: Skill deficit
subject: Teaching internship
subject: Empirical research
subject: 370

description: The fulfilment of competent secondary vocational school (SMK) teachers needs in accordance with the requirements and standards of teacher competence in Indonesia has not yet been carried out according to expectations. This dissertation seeks to find out more about what skills deficit are possessed by prospective vocational teachers who have just graduated from university and to find out more deeply what are the factors that influence these skills deficit. Prospective vocational teachers who will serve in secondary vocational schools (SMK’s) at this time need a long adaptation process before being able to teach at each level of competence according to their competence. Based on the research question, "what kind of skills deficit and its factors influence, owned by prospective mechanical engineering teachers related to the school needs for competent teachers in West Java?" the implementation of the teaching internship program for prospective vocational teachers as well as the learning process carried out at the TVET faculty will be the starting point for this dissertation. Problem-Centred Interviews (PCI) have been conducted with the supervisor teachers in the teaching internship program (n=10) and lecturers who teach practical courses at the TVET faculty (n=10) with an approach to the process carried out on teaching internship program activities for prospective vocational teachers in SMK’s and an approach to the practical learning process carried out at the TVET faculty in order to prepare prospective vocational teachers according to the needs of SMK’s. And then evaluated using the methods of inductive category formation, the forms of analysis of qualitative content analysis about kind of skills deficit and its factors influence reconstructed, interpreted and summarized in a catalogue of criteria. From the result of the analysis, it is found out that the prospective teachers ready to teach in basic competence subject at schools and not yet ready for advanced level of competence in respective subjects. The interview results also found that there is no systematic approach to assure the quality of the graduates based on the standard until now there is no third-party assessment for university students so for that reason there is no assurance that the prospective teachers have enough competence for becoming a TVET teacher in SMK's.
Networking - A Statistical Physics Perspective
Creators: name: Yeung, Chi Ho
name: Saad, David
Publisher: name: arXiv
Year: 2011
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Social and Information Networks (cs.SI)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Efficient networking has a substantial economic and societal impact in a broad range of areas including transportation systems, wired and wireless communications and a range of Internet applications. As transportation and communication networks become increasingly more complex, the ever increasing demand for congestion control, higher traffic capacity, quality of service, robustness and reduced energy consumption require new tools and methods to meet these conflicting requirements. The new methodology should serve for gaining better understanding of the properties of networking systems at the macroscopic level, as well as for the development of new principled optimization and management algorithms at the microscopic level. Methods of statistical physics seem best placed to provide new approaches as they have been developed specifically to deal with non-linear large scale systems. This paper aims at presenting an overview of tools and methods that have been developed within the statistical physics community and that can be readily applied to address the emerging problems in networking. These include diffusion processes, methods from disordered systems and polymer physics, probabilistic inference, which have direct relevance to network routing, file and frequency distribution, the exploration of network structures and vulnerability, and various other practical networking applications.
description: (Review article) 71 pages, 14 figures
Which RPI-norms are the supremum of standard RPI-norms?
Creators: name: Baggio, Silvano
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2008
Subjects: MAT/05 Analisi matematica

description: We settle some open problems regarding RPI-norms, i.e. norms (on a convenient subspace of differentiable real functions) that are invariant under differentiable reparametrizations. More precisely, we clarify some key points on how RPI-norms can be approximated using standard RPI-norms. We first prove that the sum of two standard RPI-norms is the supremum of a set of standard RPI-norms. This allows us to study a class of RPI-norms that can be expressed as the sup of standard ones. Finally, we give a positive answer to an open question on the existence of RPI-norms that are not the sup of standard RPI-norms.
Proof of a conjecture of Colliot-Thélène
Creators: name: Denef, Jan
Publisher: name: arXiv
Year: 2011
Subjects: subject: Algebraic Geometry (math.AG)
subject: Number Theory (math.NT)
subject: FOS: Mathematics

description: We prove a conjecture of Colliot-Thélène that implies the Ax-Kochen Theorem on p-adic forms. We obtain it as an easy consequence of a diophantine excision theorem whose proof forms the body of the present paper.
description: 18 pages. Substantial revision to improve the exposition. A few mistakes corrected. The Diophantine Purity Theorem is now called the Diophantine Excision Theorem
Lembit Põlma välipäevik nr 32
Creators: name: Põlma, Lembit
Publisher: name: Tallinna Tehnikaülikooli Geoloogia Instituut
Year: 1987
Subjects: Ordovician
Devonian
Estonia
Narva opencast mine
geological descriptions
lithology

description: Field notebook with descriptions of Ordovician and Devonian strata in the Narva opencast mine, Estonia.
“Non una donna in politica, ma una donna politica”: Women’s Political Language in an Italian Context
Creators: name: Philip, Gill
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2007
Subjects: L-LIN/01 Glottologia e linguistica
L-LIN/12 Lingua e traduzione - Lingua inglese

description: This study examines the metaphors used by women politicians in Italy. Similarities and differences between the metaphors which occur are analysed, using a corpus of political communiqués, speeches and interviews spanning the period June 2006 - May 2007.
Beiträge zur Aufklärung der lichtinduzierten Solarzell-Degradation unter erhöhter Temperatur
Creators: name: Luka, Tabea
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2021
Subjects: subject: 530

description: Die vorliegende Arbeit befasst sich mit der licht- und temperaturinduzierten Degradation (engl. light and elevated temperature induced degradation „LeTID“), welche bei der Einführung von PERC Solarzellen in die Massenproduktion beobachtet wurde. Diese Degradation stellt ein hohes wirtschaftliches Risiko dar, da Effizienzverluste von bis zu 20% festgestellt wurden. Zur Reduzierung des Risikos wird mittels experimenteller Untersuchungen, Simulationen und mathematischer Beschreibungen ein tiefgreifendes Verständnis der Degradation erarbeitet. In Folge dessen wird ein beschleunigter Labortest entwickelt, welcher ermöglicht die potentiellen Verluste durch LeTID im Betrieb abzuschätzen. Anhaltspunkte und Vorgehensweisen werden ausgearbeitet, um LeTID von anderen LID-Mechanismen zu unterscheiden. Zudem wird ein LeTID-Defektmodell basierend auf Metall-Wasserstoff-Paaren wird vorgestellt, welches die komplexen Beobachten bei der Degradation zu erklären vermag.
description: The present dissertation deals with the light and elevated temperature induced degradation (LeTID), which was observed during the introduction of PERC solar cells into mass production. This degradation represents a high economic risk, as efficiency losses of up to 20% have been identified. To reduce the risk, a thorough understanding of the degradation is developed using experimental investigations, simulations and mathematical descriptions. As result an accelerated laboratory test is being developed, which enables the potential losses caused by LeTID to be estimated. Evidence and procedures are being developed to distinguish LeTID from other LID mechanisms. In addition, a LeTID defect model based on metal-hydrogen pairs is presented, which is able to explain the complex observations during degradation.
Einfluss von Frequenzbändern auf die Tonhöhendiskrimination bei Cochlea-Implantat-Trägern
Creators: name: Altindal, Reyhan
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2023
Subjects: subject: 610

description: Wenn konventionelle Hörgeräte hochgradigen Hörverlust nicht ausreichend kompensieren können, können Cochlea-Implantate (CI) helfen. Ein CI ersetzt die Funktion der inneren Haarzellen. Auf dem Elektrodenträger des CI befinden sich mehrere Elektrodenkontakte. Den einzelnen Elektrodenkontakten sind Bandpassfilterfrequenzen zugeordnet. In unserer Studie wurde die Tonhöhendiskriminationsfähigkeit von CI-Trägern im Bereich einzelner Elektroden und an den Elektrodenübergängen untersucht. Zunächst wurden den CI-Trägern Tonpaare präsentiert, bei denen die Frequenzen beider Töne über die Stimulation einer gemeinsamen Elektrode wahrgenommen werden. Zudem wurden Tonpaare präsentiert, bei denen die Frequenzen beider Töne durch die Stimulation von zwei benachbarten Elektroden wahrgenommen werden. Anschließend wurde die Erkennungsfähigkeit von CI-Trägern für Melodien untersucht. Dabei wurde jede Melodie in zwei verschiedenen Dur-Tonarten präsentiert und die Erkennungsraten miteinander verglichen.
description: When conventional hearing aids cannot adequately compensate for severe hearing loss, cochlear-implants (CI) can help. A CI replaces the function of the inner hair cells. There are several electrode contacts on the electrode carrier of the CI. Bandpass filter frequencies are assigned to the individual electrode contacts. In our study, the pure tone discrimination ability of CI users was examined within individual electrodes as well as at the electrode junctions. First, we presented tone pairs in which the frequencies of both tones were perceived via stimulation of one common electrode. In addition, we presented tone pairs in which the frequencies of both tones were perceived through the stimulation of two neighboring electrodes. Then, the ability of CI users to recognize melodies was examined. Each melody was presented in two different major keys and the recognition rates were compared.
Additional file 1 of Machine learning methods to predict 30-day hospital readmission outcome among US adults with pneumonia: analysis of the national readmission database
Creators: name: Huang, Yinan
name: Talwar, Ashna
name: Lin, Ying
name: Aparasu, Rajender R.
Publisher: name: figshare
Year: 2022
Subjects: subject: Medicine
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Information Systems not elsewhere classified
subject: Mathematical Sciences not elsewhere classified

description: Additional file 1. Model Development Parameters and Performance Metrics.
Quasiparticle entropy in the high-field superconducting phase of CeCoIn$_5$
Creators: name: Tokiwa, Y.
name: Bauer, E. D.
name: Gegenwart, P.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The heavy-fermion superconductor CeCoIn$_5$ displays an additional transition within its superconducting (SC) state, whose nature is characterized by high-precision studies of the isothermal field dependence of the entropy, derived from combined specific heat and magnetocaloric effect measurements at temperatures $T\geq 100$ mK and fields $H\leq 12$ T aligned parallel, perpendicular and $18^\circ$ off the tetragonal [100] direction. For any of these conditions, we do not observe an additional entropy contribution upon tuning at constant temperature by magnetic field from the homogeneous SC into the presumed Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) SC state. By contrast, for $H\parallel [100]$ a negative isothermal entropy contribution, compatible with spin-density-wave (SDW) ordering, is found. Our data exclude the formation of a FFLO state in CeCoIn$_5$ for out-of-plane field directions, where no SDW order exists.
Assessing the impacts of traffic-related and woodsmoke particulate matter on subclinical measures of cardiovascular health : a HEPA filter intervention study
Creators: name: Kajbafzadeh, Majid
Publisher: name: University of British Columbia
Year: 2014

description: Fine particulate matter (PM2.5) plays an important role in the link between air pollution and a range of health effects including respiratory and cardiovascular morbidity and mortality. The specific sources of PM2.5 responsible for these effects have not been definitively identified. With traffic-related air pollution (TRAP) and woodsmoke (WS) as two of the major contributors to ambient PM2.5 concentrations, this study was the first to investigate the difference in health outcomes between these two sources. The purpose of this study was to compare cardiovascular exposure-response relationships for TRAP and WS and to evaluate the impact of HEPA filtration on indoor TRAP and WS PM₂.₅ levels. In this single-blind randomized crossover study, 83 healthy adults (54 living in high TRAP and 29 living in high WS areas) between the ages of 19 and 72 living in Metro Vancouver were recruited. Areas with high TRAP or high WS were identified using previously developed spatial models and subjects were recruited by letters sent to households in these areas. Sampling was conducted over two consecutive one-week periods, one with filtration and one with no filtration. Two filtration devices were used, one in the main living room and one in main bedroom. Endothelial function was measured at the end of each week and blood was drawn at baseline and at the end of each week. Mixed effect models were used to investigate the relationship between exposure and outcome variables. Overall, HEPA filtration was associated with a 40% decrease in indoor PM₂.₅ concentrations. There was inconclusive evidence on the potential relationship between TRAP or WS PM₂.₅ exposure and endothelial function. However, there was some suggestion of an association between PM₂.₅ exposure and CRP specifically among male participants in high-TRAP locations (20.6% increase in CRP levels per unit median increase in PM₂.₅, 95% CI, 2.62% – 41.7%). There was no association between any exposure indicators and IL-6 or BCC. In summary, the results support the hypothesis that HEPA filtration can be effective in reducing indoor PM₂.₅ concentrations with some support for the a priori hypothesis of a greater impact on markers of inflammation in areas of high TRAP.
Stock market valuation of patent portfolios: Offprint of Paragraph 5
Creators: name: Morricone, S
name: Oriani, R
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2010
Subjects: SECS-P/08 Economia e gestione delle imprese

description: The investors in the stock market place a value on patent portfolios of traded firms in addition to
other corporate assets.
A growing body of empirical literature has documented a significantly positive relationship
between patents and firm market value. In addition, the market seems to recognize the different
quality of different patent portfolios. Therefore, a better understanding of how the stock market
evaluates firms’ patents can be important for managers and professionals.
Accordingly, this chapter analyzes the theoretical and methodological foundations of the
relationship between patents and market value and it reviews the main results of the empirical
literature, discussing the implications for patent valuation.
Trajectory of psychological distress among cardiac surgery patients
Creators: name: McCann, William
Publisher: name: University of Southern Queensland
Year: 2024

description: Cardiac surgery patients commonly experience distress, manifested in anxiety, depression, and stress, with up to half reporting significant levels of these symptoms. This research aimed to identify factors associated with acute pre-surgical distress and the progression of early post-surgical distress, extending up to six months following hospital discharge. The mixed-methods research comprised four studies: a narrative literature review, a cross-sectional quantitative survey, a longitudinal quantitative survey, and a qualitative interview study. There were 71 elective CABG and/or cardiac valve surgery patients assessed utilising surveys and in-depth interviews. The narrative literature review identified several potential drivers of distress after cardiac surgery. Building on this, the novel survey data revealed large reductions in anxiety and stress among patients from pre-surgery to six months post-discharge; however, no such reductions were apparent for depression. Twelve individual difference characteristics emerged as predictors of pre-surgery distress, and only five – including higher remoteness of living – predicted greater magnitudes of change in distress over time. Participants in the qualitative interviews described deficiencies in communication from the operating hospital. Additionally, non-metropolitan participants expressed greater reliance on General Practitioners, emphasising the challenges of accessing care in rural areas. This research provides valuable insights into the nature of distress, offering several actionable implications for improving patient care, such as psychological screening during admission, an on-duty psychologist, and the provision of relevant education. By employing a complementary and varied methodology, this doctoral thesis significantly advances understanding of the psychological factors influencing distress in cardiac surgery patients, particularly non-metropolitan patients, uncovering novel predictors that can inform theory development, as well as providing actionable insights to improve patient care.
Lavoro organizzato e salute in un laboratorio di analisi cliniche
Creators: name: Maggi, Bruno
name: Mocarelli, Paolo
name: Rulli, Giovanni
name: D'Orso, Marco
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2010
Subjects: M-PSI/06 Psicologia del lavoro e delle organizzazioni
MED/44 Medicina del lavoro
SECS-P/10 Organizzazione aziendale
SPS/09 Sociologia dei processi economici e del lavoro

description: This contribution presents the main results of a research aimed at interpreting the relationships between organized work and workers' health in a clinical analysis laboratory. The analysis has been carried out in the biomedical laboratory of the Desio hospital, by adopting the Method of Organizational Congruencies. All units operating within the laboratory were studied in detail by means of MOC. The analysis allowed to identify, for each technical action, the typical elements of organizational constraint, and to suggest different organizational choices. It was also possible to plan detailed biomedical analysis to assess operators’ distress and to prearrange specific measures of primary and secondary prevention.
Index type invariants for twisted signature complexes and homotopy invariance
Creators: name: Benameur, Moulay Tahar
name: Mathai, Varghese
Publisher: name: arXiv
Year: 2012
Subjects: subject: Differential Geometry (math.DG)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: For a closed, oriented, odd dimensional manifold $X$, we define the rho invariant $ρ(X,E,H)$ for the twisted odd signature operator valued in a flat hermitian vector bundle $E$, where $H = \sum i^{j+1} H_{2j+1}$ is an odd-degree closed differential form on $X$ and $H_{2j+1}$ is a real-valued differential form of degree ${2j+1}$. We show that the twisted rho invariant $ρ(X,E,H)$ is independent of the choice of metrics on $X$ and $E$ and of the representative $H$ in the cohomology class $[H]$. We establish some basic functorial properties of the twisted rho invariant. We express the twisted eta invariant in terms of spectral flow and the usual eta invariant. In particular, we get a simple expression for it on closed oriented 3-dimensional manifolds with a degree three flux form. A core technique used is our analogue of the Atiyah-Patodi-Singer theorem, which we establish for the twisted signature operator on a compact, oriented manifold with boundary. The homotopy invariance of the rho invariant $ρ(X,E,H)$ is more delicate to establish, and is settled under further hypotheses on the fundamental group of $X$.
description: 33 pages, to appear in, Math. Proc. Cambridge Philos. Soc
Essays on product design and online word-of-mouth
Creators: name: Wang, Tan
name: 0000-0003-4828-4543
Publisher: name: The University of Texas at Austin
Year: 2021
Subjects: Product line design
Robust optimization
Word-of-mouth
Long-tail products

description: This dissertation consists of three essays on the topics of product design and online Word-of-mouth (WOM). The first essay considers two robustness approaches to design a product line under great uncertainty. An efficient frontier of robust designs is constructed, and a simple metric is proposed to finalize designs on the frontier. Moving from analytical modeling to real-world data, the second essay empirically studies the differential impact of online reviews that express different levels of expertise on consumer demand for craft beers. The key finding is that reviews from non-experts are more influential than those from experts. Finally, the third essay establishes the relationship between co-mentions with popular products in discussion forums and demand for niche products in the context of craft beers. The results suggest that consumer demand is positively associated with being co-mentioned with top-selling products, and the effect is significant for products in the tail of sales distribution.
Reversible optical to microwave quantum interface
Creators: name: Barzanjeh, Sh.
name: Abdi, M.
name: Milburn, G. J.
name: Tombesi, P.
name: Vitali, D.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We describe a reversible quantum interface between an optical and a microwave field using a hybrid device based on their common interaction with a micro-mechanical resonator in a superconducting circuit. We show that, by employing state-of-the-art opto-electro-mechanical devices, one can realise an effective source of (bright) two-mode squeezing with an optical idler (signal) and a microwave signal, which can be used for high-fidelity transfer of quantum states between optical and microwave fields by means of continuous variable teleportation.
description: 5 + 3 pages, 5 figures
Intervention, war expansion, and the international sources of civil war
Creators: name: Langø, Hans-Inge Giske
name: 0000-0001-5817-4589
Publisher: name: The University of Texas at Austin
Year: 2021
Subjects: Civil war
Interstate war
Intervention
Formal theory

description: Why do some civil wars become interstate wars while others do not? In this dissertation I develop a theory of rebellion, rebel-sided intervention, and interstate retaliation that connects civil and interstate war. I argue that civil wars expand when rebels and third parties underestimate the government's resolve, and there are three key predictors of interstate war: the size of the local stakes relative to the third party's territory, the rebels' loss of autonomy when receiving external support, and the third party's affinity for the rebels. I evaluate the model and test its predictions using a mixed-methods approach. I use newly collected data on war expansions to show how factors such as escalation costs affect risks of intervention and retaliation, and I explore the causal mechanisms of my theory through the Afghan Civil War from 1978 to 1989. My findings have implications for models of conflict, conflict prevention, and U.S. grand strategy.