cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Analytical formula for the Uehling potential
Creators: name: Frolov, Alexei M.
name: Wardlaw, David M.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Nuclear Theory (nucl-th)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: The closed analytical expression for the Uehling potential is derived. The Uehling potential describes the lowest-order correction on vacuum polarisation in atomic and muon-atomic systems. We also derive the analytical formula for the interaction potential between two electrically charged point particles which includes correction to the vacuum polarisation, but has correct asymptotic behaviour at larger $r$. Our three-term analytical formula for the Uehling potential opens a new avenue in the study of the vacuum polarisation in light atomic systems.
description: arXiv admin note: substantial text overlap with arXiv:1103.2044
Advances in Cryogenic Avalanche Detectors
Creators: name: Buzulutskov, A.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Cryogenic Avalanche Detectors (CRADs) are referred to as a new class of noble-gas detectors operated at cryogenic temperatures with electron avalanching performed directly in the detection medium, the latter being in gaseous, liquid or two-phase (liquid-gas) state. Electron avalanching is provided by Micro-Pattern Gas Detector (MPGD) multipliers, in particular GEMs and THGEMs, operated at cryogenic temperatures in dense noble gases. The final goal for this kind of detectors is the development of large-volume detectors of ultimate sensitivity for rare-event experiments and medical applications, such as coherent neutrino-nucleus scattering, direct dark matter search, astrophysical (solar and supernova) neutrino detection experiments and Positron Emission Tomography technique. This review is the first attempt to summarize the results on CRAD performances obtained by different groups. A brief overview of the available CRAD concepts is also given and the most remarkable CRAD physics effects are discussed.
description: 60 pages, 58 figures. Invited talk at MPGD2011 Conference, Aug 29 - Sep 3, 2011, Kobe, Japan. Journal version + Fig. 1a added
Untersuchungen zu optischen Aberrationen, Dämmerungssehen, Blendungsempfindlichkeit und Kontrastsensitivität nach refraktiv-chirurgischen Lasereingriffen
Creators: name: Heynemann, Maria
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2009
Subjects: subject: Online-Publikation
subject: Hochschulschrift
subject: Aberrationen – LASIK – Wellenfront – Kontrastsehen – Dämmerungssehen -Blendung
subject: Aberrations – LASIK – wavefront – contrast sensitivity – scoptopic vision – glare.
subject: 617.7
subject: 617

description: Hintergrund: Die Wellenfront-LASIK unterscheidet sich von der konventionellen LASIK durch ein erweitertes Ablationsprofil, durch das nicht nur Brechungsfehler 2. Ordnung, sondern auch Brechungsfehler höherer Ordnung korrigiert werden. Durch die Ablation werden aber auch Aberrationen induziert. Ziel dieser Arbeit ist es, herauszufinden, in welchem Maße präoperativ gemessene Aberrationen korrigiert und wie viele induziert werden in Abhängigkeit vom Ablationsprofil. Methode: In dieser prospektiven, monozentrischen Untersuchung wurden von Februar 2004 bis Juli 2005 116 Augen von 63 Patienten mit Myopien von -1,6 dpt bis -10,4 SÄ entweder mit der konventionellen oder der wellenfrontgeführten LASIK behandelt. Beide Ablationsprofile wurde hinsichtlich Wellenfront, Dämmerungssehen, Blendungsempfindlichkeit, Kontrastsehen untersucht. Ergebnisse: Nach Wellenfront-LASIK stieg der Wellenfrontfehler weniger stark an als nach konventioneller LASIK. Im Korrekturbereich bis -5 dpt SÄ konnte er sich nach Wellenfront-LASIK sogar verbessern. Vertikales und horizontales Koma blieben nach Wellenfront-LASIK unverändert, während sie sich nach konventioneller LASIK verschlechterten. Im niedrigmyopen Korrekturbereich profitierten auch die sphärischen Aberrationen von der Wellenfront-LASIK. Beide Ablationsprofile führten bei Korrekturen > -5 dpt SÄ zu einer Verschlechterung des Dämmerungssehens und der Blendungsempfindlichkeit. Die Wellenfront-LASIK zeigte gegenüber der konventionellen LASIK ein verbessertes photopisches und mesopisches Kontrastsehen in beiden Korrekturbereichen. Schlussfolgerung: Durch die Wellenfront-LASIK ist bei Korrekturen < -5 dpt SÄ eine Reduktion der Gesamtaberrationen möglich. Die Korrektur von Myopien > -5 dpt SÄ führen häufig zu einer Verschlechterung von Dämmerungssehen und Blendungsempfindlichkeit unabhängig vom LASIK-Typ. Die Wellenfront-LASIK ist zusätzlich in der Lage die postoperative Kontrastsensibilität zu verbessern.
Representing stable complexes on projective spaces
Creators: name: Lo, Jason
name: Zhang, Ziyu
Publisher: name: arXiv
Year: 2012
Subjects: subject: Algebraic Geometry (math.AG)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 14D20, 14F05 (Primary), 14J60 (Secondary)

description: We give an explicit proof of a Bogomolov-type inequality for $c_3$ of reflexive sheaves on $\mathbb{P}^3$. Then, using resolutions of rank-two reflexive sheaves on $\mathbb{P}^3$, we prove that some strata of the moduli of rank-two complexes that are both PT-stable and dual-PT-stable are quotient stacks. Using monads, we apply the same techniques to $\mathbb{P}^2$ and show that some strata of the moduli of Bridgeland-stable complexes are quotient stacks.
description: 27 pages
Frames, Transitivity Structures e gerarchie di potere tra personaggi:
Harry Potter affronta Lord Voldemort in The Sorcerer's Stone
Creators: name: Luporini, Antonella
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2009
Subjects: L-LIN/01 Glottologia e linguistica
L-LIN/10 Letteratura inglese
L-LIN/12 Lingua e traduzione - Lingua inglese

description: Partendo dal riconoscimento del ruolo centrale svolto dal testo all'interno di un'opera letteraria, non solo come discriminante delle sue possibili interpretazioni (Eco, 1990 [2004]), ma anche in quanto materia prima di un'arte crafted with language (Hasan, 2007), il presente lavoro indaga le modalità  con cui le strutture linguistiche guidano il lettore nel processo semiotico, scegliendo come case study un brano tratto dal primo libro della serie di Harry Potter, della scrittrice britannica contemporanea J.K. Rowling. Scopo dell'analisi è evidenziare come le costruzioni grammaticali e le scelte lessicali rappresentino il rapporto di potere che si instaura tra il protagonista (Harry Potter) e l'antagonista (Lord Voldemort) nel contesto del loro primo scontro frontale, servendosi degli strumenti forniti da due teorie linguistiche distinte ma, per certi aspetti, complementari: la Frame Semantics di C.J. Fillmore e il ramo della Systemic Functional Linguistics di M.A.K. Halliday relativo al Transitivity System. Nell'ottica di Fillmore, infatti, le unità  lessicali realizzate a livello sintagmatico in una produzione linguistica sono in grado di attivare nella mente dei partecipanti alla comunicazione scene cognitive complesse (frames), di cui mettono in rilievo solo alcuni aspetti, indicando una precisa "prospettiva" su un evento. Nel sistema di Transitivity hallidaiano, invece, l'attenzione è rivolta alla lingua come meccanismo di rappresentazione di contenuti esperienziali, fondato sull'associazione tra elementi lessico-grammaticali che compongono la frase e Processes, Participants e Circumstances di varia natura. L'autrice, integrando avvedutamente i due quadri teorici, espone una visione complessiva dei fattori su cui si basano la comprensione e l'interpretazione da parte del lettore nell'ambito del brano oggetto di studio. Il lavoro si pone al tempo stesso come ideale punto di partenza per uno sviluppo della ricerca in chiave intertestuale e intersemiotica.

Concetti chiave: "arte verbale", systemic functional linguistics, frame semantics, transitività , Harry Potter
Sciopero (voce)
Creators: name: Casale, Davide
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2009
Subjects: IUS/07 Diritto del lavoro

description: SOMMARIO: 1. Fonti e nozione. - 2. Fon-damento e natura del diritto. - 3. Titolarità del diritto. - 4. Gli scopi dello sciopero. - 5. I modi attuati-vi dello sciopero. - 6. Gli effetti legali dello sciopero. - 7. Lo scio-pero nei servizi pubblici essenziali. - 8. (Segue) Le regole da rispet-tare. - 9. (Segue) L’apparato san-zionatorio e la precettazione.
Associations Between Sexual Minority Status, Hazardous Drinking, and Discrimination Experiences Among Criminal Legal-Involved Adults in the Southern PrEP Cohort (SPECS) Study
Creators: name: Lauckner, Carolyn
name: Krajewski, Taylor
name: Mollan, Katie
name: Nowotny, Kathryn M.
name: McLouth, Christopher J.
name: Oser, Carrie B.
name: Brinkley-Rubinstein, Lauren
Publisher: name: Taylor & Francis
Year: 2024
Subjects: subject: Medicine
subject: Pharmacology
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Science Policy
subject: Mental Health
subject: Infectious Diseases
subject: FOS: Health sciences

description: Separately, individuals with criminal legal involvement (CLI) and those who identify as a sexual minority are at heightened risk for experiencing discrimination and engaging in hazardous alcohol use; however, little is known about the prevalence of these experiences and behaviors among sexual minority individuals who also have a history of CLI. We examined experiences of discrimination and hazardous alcohol use reported by individuals with CLI and compared prevalence between those who identify as a sexual minority and those who do not. Baseline, cross-sectional data of cisgender sexual minority individuals from a multisite, prospective cohort study examining pre-exposure prophylaxis acceptability and uptake among criminal legal-involved adults were analyzed (N = 362, 14% sexual minority). Hazardous alcohol consumption was nearly twice as prevalent among participants who identified as a sexual minority compared to heterosexual participants, and a sexual minority identity was associated with higher discrimination scores. Additionally, hazardous drinking was more prevalent among those with higher discrimination scores. This study suggests that sexual minority individuals with a history of CLI are an especially high-risk group given the elevated rates of discrimination and hazardous alcohol use observed. More research is needed to further investigate the risk behaviors of this population and to develop interventions to intervene on their physical and mental health.
Regularity near the Initial State in the Obstacle Problem for a class of Hypoelliptic Ultraparabolic Operators
Creators: name: Nystrom, Kaj
name: Pascucci, Andrea
name: Polidoro, Sergio
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2009
Subjects: MAT/05 Analisi matematica
SECS-S/06 Metodi matematici dell'economia e delle scienze attuariali e finanziarie

description: This paper is devoted to a proof of regularity, near the initial state, for solutions to the Cauchy-Dirichlet and obstacle problem for a class of second order differential operators of Kolmogorov type. The approach used here is general enough to allow us to consider smooth obstacles
as well as non-smooth obstacles.
Semiclassical correlators of three states with large S^5 charges in string theory in AdS_5 x S^5
Creators: name: Buchbinder, E. I.
name: Tseytlin, A. A.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider semiclassical computation of 3-point correlation functions of (BPS or non-BPS) string states represented by vertex operators carrying large charges in S5. We argue that the AdS5 part of the construction of relevant semiclassical solution involves the two basic ingredients: (i) configuration of three glued geodesics in AdS2 suggested by Klose and McLoughlin in arXiv:1106.0495 and (ii) a particular Schwarz-Christoffel map of the 3-geodesic solution in cylindrical (tau, sigma) domain into the complex plane with three marked points. This map is constructed using the expression for the AdS2 string stress tensor which is uniquely determined by the 3 scaling dimensions as noted by Janik and Wereszczynski in arXiv:1109.6262 (our solution, however, is different from theirs). We also find the S5 part of the solution and thus the full expression for the semiclassical part of the 3-point correlator for several examples: extremal and non-extremal correlators of BPS states and a particular correlator of "small" circular spinning strings in S3 part of S5. We demonstrate that for the BPS correlators the results agree with the large charge limit of the corresponding supergravity and free gauge theory expressions.
description: 43 pages, 4 figures; v2: minor corrections; v3: comments added at the end of section 3 and in section 5; v4: minor corrections; v5: discussion in subsection 3.3 corrected
Lessons in Learning: Contextualising Maulana Azad and His Educational Philosophy for Our Times
Creators: name: Patel, Mushtaq Ahmed
name: Siddiqui, Wadudul Haque
Publisher: name: Zenodo
Year: 2021

description: Maulana Azad's ideas pertaining to his educational thoughts about the instruction of knowledge in post-independent India and his achievements towards institutionalizing education among a populace whose literacy rate at the time of independence was merely 18% still echo relevance for our times. The utilitarian analysis of Maulana Azad's legacy can benefit both present and future generations. The fact is that our generation has not done justice to his personality and still continues to ignore his major contributions. However, it is only we as teachers who can contextualise his legacy for our children inside the classrooms and beyond, with a sincere hope that we do not fail in our communication as we failed in our appreciation of him. In fact, what seems more relevant is to understand how he became what he was and what personal achievements he gathered in his life that allowed him to be remembered today with such fervour and delight as a nationalist, philosopher, writer, and as the first Education Minister of independent India.
Linear extensions and order-preserving poset partitions
Creators: name: Jenča, Gejza
name: Sarkoci, Peter
Publisher: name: arXiv
Year: 2011
Subjects: subject: Combinatorics (math.CO)
subject: Algebraic Topology (math.AT)
subject: FOS: Mathematics
subject: Primary 06A07, Secondary 37F20

description: We examine the lattice of all order congruences of a finite poset from the viewpoint of combinatorial algebraic topology. We will prove that the order complex of the lattice of all nontrivial order congruences (or order-preserving partitions) of a finite $n$-element poset $P$ with $n\geq 3$ is homotopy equivalent to a wedge of spheres of dimension $n-3$. If $P$ is connected, then the number of spheres is equal to the number of linear extensions of $P$. In general, the number of spheres is equal to the number of cyclic extensions of $P$.
Metodi di Newton proiettato nella ricostruzione di immagini - Rapporto tecnico
Creators: name: Cornelio, Anastasia
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2009
Subjects: MAT/08 Analisi numerica

description: In questo lavoro si analizza il metodo di Newton proiettato proposto da Bertsekas per problemi di ottimizzazione con vincoli di positività e lo si applica al problema della ricostruzione di immagini. Poiché tale problema è malposto, sono applicati i metodi di regolarizzazione di Tikhonov e della variazione totale. Sono considerate immagini astronomiche perturbate con due diverse PSF e con rumore bianco di Poisson.
Computer adaptive testing with empirical prior information: a Gibbs sampler approach for ability estimation
Creators: name: Matteucci, Mariagiulia
name: Veldkamp, Bernard P.
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2009
Subjects: SECS-S/01 Statistica
M-PSI/03 Psicometria
SECS-S/05 Statistica sociale

description: In this paper, empirical prior information is introduced in computer adaptive testing. Despite its increasing use, the method suffers from a weak measurement precision, especially under particular conditions. Therefore, it is shown how the inclusion of background variables both in the initialization and the ability estimation is able to improve the accuracy of ability estimates.  In particular, a Gibbs sampler scheme is proposed in the phases of interim and final ability estimation. By using simulated data, it is demonstrated that the method produces more accurate ability estimates, especially for short tests and when reproducing boundary abilities.
Prävalenz und Zeitverlauf von "Mikroembolischen Signalen" bei Patienten mit elektivem Herzklappenersatz - eine prospektive Studie
Creators: name: Lühmann, Andreas
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2009
Subjects: subject: Online-Publikation
subject: Hochschulschrift
subject: 617.41
subject: 610

description: HINTERGRUNG UND ZIELE: Diese Studie wurde durchgeführt, um sowohl die Prävalenz und den Zeitverlauf von mikroembolischen Signalen (MES) als auch deren klinische Relvanz bei Patienten, welche elektivem Herzklappenersatz untergehen, näher zu untersuchen. METHODEN: Wir untersuchten die Arteria cerebri media von 33 Patienten zu festgelegten Zeitpunkten (präoperativ, am ersten postoperativen Tag, nach 5 Tagen, 90 Tagen und 180 Tagen) mittels transkranieller Dopplersonografie. Die Ableitungen wurden bilateral mittels einer 2 MHz Sonde vorgenommen. Die Untersuchungsdauer betrug jeweils eine Stunde. MES wurden nach anerkannten Kriterien identifieziert und zur weiteren Auswertung digital gespeichert. ERGEBNISSE: Die Prävalenz der MES stieg von 3% präoperativ zu 41% am ersten postoperativen Tag und hat sich hiernach nicht weiter verändert. Weder das Ausmaβ der Antikoagulation noch der Klappentyp beieinfluβte die Anzahl der Signale. Einseitiges ableiten der Signale hätte nur 83,9% dieser erfaβt. DISKUSSION: Aufgrund des rapiden Anstieges der Signalzahlen nach Implantation der Herzklappen ist davon auszugehen, daß die Herzklappen Ursprung der Signale sind. Weder der Klappentyp, noch die Dauer der Implantation oder das Ausmaβ der Antikoagulation beinflussen die Anzahl der Signale. Eine bilaterale Ableitung gewährleistet genauere Ergebnisse, da keine MES der Aufzeichnung verloren gehen.
Electronic structure of sulfur-nitrogen containing compounds : correlations with theory and chemical reactivity
Creators: name: Okbinoğlu, Tülin Nesime
Publisher: name: University of British Columbia
Year: 2014

description: Molecules containing sulfur-nitrogen bonds, such as sulfonamides, have long been of interest due to their many uses and chemical properties, including the potential release of nitric oxide and nitroxyl. Understanding the factors that cause sulfonamide reactivity is crucial, yet their inherent electronic complex- ity have made them difficult to examine. In this thesis, sulfur K-edge x-ray absorption spectroscopy (XAS) is used in conjunction with density functional theory (DFT) to determine the role of electronic transmission effects through the sulfur-nitrogen bond. A systematic deconstruction of the elements within the sulfonamide moiety is used as an approach to understand critical factors that dictate electronic structure. First, the effect of oxidation state changes and variations in R-group in sulfenamides, sulfinamides and sulfonamides on intramolecular bonding are explored. Next, N-hydroxylation of the sulfonamide amide, in both alkyl sulfonamides and a series of para-substituted aryl sulfonamides with varying Hammett para-sigma constants are studied using structure-function relationships, in conjunction with DFT, to understand the role of electron donation and withdrawal to the sulfonamide moiety. The outcome of these modifications on the sulfonamide framework lead to better insight towards directed drug design and its influence on nitroxyl and nitric oxide release.
Metodi per la ricostruzione della posizione d'impatto per immagini planari provenienti da una gamma camera
Creators: name: Cornelio, Anastasia
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2009

description: La stima della posizione di interazione dei fotoni su una gamma camera per medicina nucleare presenta tipicamente dei problemi vicino ai bordi del rivelatore. Questo fenomeno è dovuto sicuramente alla perdita dei contributi delle code delle distribuzioni di luce che, avvicinandosi ai bordi, cadono al di fuori del rivelatore stesso.
In questo lavoro si analizzano e si confrontano i risultati di vari metodi per cercare di migliorare l'errore che si commette nel calcolo della posizione d'impatto.
The Association of Medical Cannabis Use with Pain Levels and Opioid Use in Illinois’ Opioid Alternative Pilot Program
Creators: name: Dubois, Cerina
name: Bobitt, Julie
name: Ding, Lei
name: Eurich, Dean T.
name: Knapp, Ashley A.
name: Jordan, Neil
Publisher: name: Taylor & Francis
Year: 2024
Subjects: subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Neuroscience
subject: Pharmacology
subject: Biotechnology
subject: Cancer
subject: Science Policy
subject: Mental Health

description: The state of Illinois’ Opioid Alternative Pilot Program (OAPP) is the first and only official harm-reduction program in the US to address the opioid crisis via facilitation of safe and legal access to medical cannabis. This study evaluates the association of medical cannabis use with pain level and frequency of opioid use in the first cohort of OAPP participants in 2019. A survey was sent OAPP enrollees between February and July 2019. Cannabis users (n = 626) were compared to non-users (n = 234) to determine whether there was an association between cannabis use and self-reported (a) pain level and (b) frequency of opioid use. Backward stepwise regression models were used. A total of 860 participants was included in the analysis. Overall, 75% of the study sample reported pain as their primary medical symptom, and 67% of cannabis users reported having a disability. The mean difference in pain level between cannabis users and non-users was 4.5 units (on a 100-point scale) higher among cannabis users than non-users (p = 0.03); and cannabis use was statistically associated with pain level. High-frequency opioid users had lower odds of reporting cannabis use within the past year than low/no opioid users. Although there was a statistical association between cannabis use and pain, the difference of 4.5 points in pain level between users and non-users was too small to reflect a clinically meaningful relative difference. This study may provide useful information to providers and clinicians about how the OAPP and similar programs may reduce opioid use and improve health outcomes.
Der Einfluss externen Bleichens auf die Mikro-Zugfestigkeit verschiedener Adhäsivsysteme auf humanem Dentin - (eine In-Vitro-Studie) /von Karolin Verena Brandt
Creators: name: Brandt, Karolin Verena
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2011
Subjects: subject: Online-Publikation
subject: Hochschulschrift
subject: 617

description: Ziel dieser In-vitro-Untersuchung war es, den Einfluss des externen Bleichens (Perfect Bleach und Opalescence Xtra Boost) auf die Mikro-Zugfestigkeit von 4 Adhäsiven (Syntac, XP Bond, Futurabond NR und AdheSE One) zu untersuchen. Die Versuche wurden mit 180 zervikalen Dentinproben durchgeführt, die gebleicht und mit den Adhäsiven und einem Komposit verarbeitet wurden. Unter Dentinperfusion wurden die Mikro-Haftkräfte mit einer Universalprüfmaschine ermittelt. Die Haftwerte der ungebleichten und den mit Carbamidperoxid gebleichten Reihen war in keinem Fall signifikant verändert (p<0,05; Tukey´s Test). Bei 2 der 4 verwendeten Dentinadhäsive (Syntac und AdheSE One) konnte eine signifikante Reduktion der Haftwerte um bis zu 33 % nach der Behandlung mit 38%igem Wasserstoffperoxid festgestellt werden (p<0,05; Tukey's Test). Dies führt zu der Schlussfolgerung, dass das Bleichen von Dentin mit hochkonzentrierten Bleichmitteln zu einer Haftkraftreduktion führt und den Verbund beeinträchtigt. Bei niedrigkonzentrierten Bleichmitteln ist dieser Effekt nicht signifikant und deren Verwendung kann in diesem Zusammenhang empfohlen werden.
Off-Pump- und On-Pump-Technik bei der operativen Koronarrevaskularisation - ein systematischer Review von Propensity Score Analysen
Creators: name: Salviati, Benita Ruth Dorli Irmgard
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2009
Subjects: subject: Online-Publikation
subject: Hochschulschrift
subject: 617.41
subject: 616

description: Zielsetzung: Trotz vieler Studien, welche die On- und Off-pump-Technik bei der operativen Koronarrevaskularisation vergleichen, konnte sich keine der Methoden als die Bessere erweisen. Die Evidenz von randomisierten klinischen Studien wird durch selektionierte Patientenkollektive und kleine Studienpopulationen limitiert und die von Beobachtungsstudien durch die fehlende Randomisation. Propensity Score Analysen versprechen zumindest einige dieser Nachteile zu vermeiden. Methoden: Propensity Score Analysen wurden in 8 Standard Datenbanken, im freien Web und durch Citation tracking gefunden. 2 Personen abstrahierten die Daten von 11 Kurzzeit-Outcomes. Ergebnisse: 35 von anfangs 58 gefundenen Studien wurden in die finale Analyse aufgenommen. Sie zählten 123137 Patienten. Das geschätzte gesamt-Odds Ratio lag für alle Outcomes <1 zu Gunsten der Off-Pump-Methode. Zusammenfassung: Unsere Meta-Analyse ergibt, dass Off-Pump die bessere Technik ist. Die Ergebnisse stehen in Konkordanz mit den Ergebnissen von systematischen Reviews über randomisierte und nicht randomisiere klinische Studien.
USIA Poll # 1962-LA13: The Economic and Political Climate of Opinion in Latin America
Creators: name: USIA
Publisher: name: Roper Center for Public Opinion Research
Year: 2021

description: Life conditions(7); land reform(8); tax reform(6); public and private industry(1); foreign companies(3); Fidel Castro(2); foreign economic aid(2); USA economic aid(8); 'Alianza Poza El Progresso'/Alliance for Progress (22); USA influence(7); communist influence(3); radio and cinema(6); American lifestyle(4).
Entwicklung eines Prüfsystems zur Bakteriendurchlässigkeit von Wurzelkanalfüllmaterialien
Creators: name: Pollak, Rita
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2011
Subjects: subject: Online-Publikation
subject: Hochschulschrift
subject: 617

description: Die insuffiziente Wurzelkanalfüllung ist eine der häufigsten Ursachen für die chronisch apikale Parodontitis. Aus diesem Grund wurde in dieser Studie ein Prüfsystem für die Bakteriendurchlässigkeit von Wurzelkanalfüllmaterialien entwickelt. Dafür wurden Zähne vorbereitet und anschließend mit Guttapercha, Guttapercha und AH Plus™ und Guttapercha und EndoREZ® gefüllt und in ein Zwei-Kammer-System überführt. Beide Kammern wurden mit TSB befüllt. Die obere Kammer wurde mit P. aeruginosa kontaminiert. Die Versuchskörper wurden für 48 Tage inkubiert. 83% der Zähne mit Guttapercha waren ab Tag 0 durchlässig. Die Zähne mit AH Plus™ waren zu 67% nach 48 Tagen durchlässig. Die Zähne mit EndoREZ® waren nach 48 Tagen zu 50% bakteriendurchlässig. In dieser Studie konnte ein System vorgestellt werden, mit dessen Hilfe die Qualität von Wurzelkanalfüllmaterialien getestet werden kann.
La soluzione dell'enigma di Piero della Francesca
Creators: name: Molari, Pier Gabriele
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2009

description: L’interpretazione dell’iconografia della Flagellazione di Piero della Francesca è dibattuta da lungo tempo e non ha trovato fino ad ora una risposta definitiva malgrado vari tentativi. 
In questo saggio, il dipinto viene associato alla tavola di Brera detta di San Bernardino ed alle tavolette della Galleria degli Uffizi di Firenze con i ritratti dei signori di Montefeltro pensando ad un'unica opera realizzata per la meditazione di Federico da Montefeltro.
Questo inedito e forse ardito accostamento pone l'insieme dei quattro dipinti sotto la stessa ottica e ne permette una definitiva interpretazione iconografica come pure una datazione certa.
Collocando poi l’insieme delle tavole nel loco sacro del Palazzo ducale di Urbino si scoprono coinvolgenti scenari di luce che danno una nuova visione dell’opera e della personalità di Piero della Francesca.
Viene infine accostata alla Flagellazione la scritta presente sul fregio della cosiddetta cappella del perdono e si scopre quale sia il tema dominante di tale dipinto: l’affermazione del primato dell’Imperatore Romano sulla Chiesa di Cristo, primato conferito da Dio stesso.
Using Latent Profile Analysis to Characterize Clinical Heterogeneity and Impulsivity in a Large Residential Addiction Treatment Program
Creators: name: Gendy, Marie N.S.
name: Remers, Shannon
name: Samokhvalov, Andriy V.
name: Sousa, Sarah
name: Rush, Brian
name: Costello, Jean
name: MacKillop, James
Publisher: name: Taylor & Francis
Year: 2024
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Neuroscience
subject: Pharmacology
subject: Biotechnology
subject: Chemical Sciences not elsewhere classified
subject: Immunology
subject: FOS: Clinical medicine
subject: Cancer
subject: Mental Health
subject: Hematology
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Virology

description: Objectives: Clinical heterogeneity among patients in addiction treatment settings represents a challenge as most of the treatment programs are designed to treat substance use disorders (SUD) generally rather than offering more tailored approaches addressing individual patient needs. Systematic characterization of clinical heterogeneity may permit more individualized care paths toward improving outcomes. Methods: Data were collected from a large inpatient SUD treatment program between April 2018 and March 2020 (n = 1519). Latent profile analysis (LPA) was applied to identify latent clusters based on differences in substance use and co-occurring depression, anxiety, and post-traumatic stress disorder. Results: Five distinct profiles emerged: Profile 1 (38%) exhibited the lowest substance use and lowest psychiatric severity (Overall Low); Profile 2 (39%) exhibited high alcohol and psychiatric severity; Profile 3 (13%) exhibited high opioid severity and low psychiatric severity. Profile 4 (8%) exhibited high cannabis use and high psychiatric severity, and profile 5 (3%) exhibited high polysubstance use other than alcohol and cannabis use. The latter two profiles were younger and exhibited higher self-regulatory deficits. The (High Alc/high psych) and the (High Cann/Psych) profiles exhibited differentially higher psychiatric severity. Profiles showing high polysubstance use, as well as high cannabis use and high psychiatric severity, showed significantly higher impulsive behavior than the others. Conclusions: LPA revealed five clusters of patients varying substantially in terms of SUD and psychiatric severity. Addressing common features of clinical heterogeneity for tailored care paths in a personalized treatment approach may improve treatment outcomes.
MPEC 2023-X03 : 2018 WA2
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
MPEC 2023-X04 : 2018 XP3
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Low-dimensional q-Tori in FPU Lattices: Dynamics and Localization Properties
Creators: name: Christodoulidi, Helen
name: Efthymiopoulos, Christos
Publisher: name: arXiv
Year: 2012
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Dynamical Systems (math.DS)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: This is a continuation of our study concerning q-tori, i.e. tori of low dimensionality in the phase space of nonlinear lattice models like the Fermi-Pasta-Ulam (FPU) model. In our previous work we focused on the beta FPU system, and we showed that the dynamical features of the q-tori serve as an interpretational tool to understand phenomena of energy localization in the FPU space of linear normal modes. In the present paper i) we employ the method of Poincare - Lindstedt series, for a fixed set of frequencies, in order to compute an explicit quasi-periodic representation of the trajectories lying on q-tori in the alpha model, and ii) we consider more general types of initial excitations in both the alpha and beta models. Furthermore we turn into questions of physical interest related to the dynamical features of the q-tori. We focus on particular q-tori solutions describing low-frequency `packets' of modes, and excitations of a small set of modes with an arbitrary distribution in q-space. In the former case, we find formulae yielding an exponential profile of energy localization, following an analysis of the size of the leading order terms in the Poincare - Lindstedt series. In the latter case, we explain the observed localization patterns on the basis of a rigorous result concerning the propagation of non-zero terms in the Poincare - Lindstedt series from zeroth to subsequent orders. Finally, we discuss the extensive (i.e. independent of the number of degrees of freedom) properties of some q-tori solutions.
description: To appear in Physica D, 34 pages, 9 figures
Klinische und radiologische Ergebnisse nach Kniegelenksarthrodese
Creators: name: Dietze, Sylvia
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2011
Subjects: subject: Online-Publikation
subject: Hochschulschrift
subject: 617

description: Zielsetzung: Die Kniegelenksarthrodese stellt nach fehlgeschlagener Knieprothese die Ultima ratio dar. Ziel war eine klinische und radiologische Aufarbeitung unseres Patientengutes. Methode: 18 Patienten erschienen zu Nachuntersuchung. Es wurde der SF-36 Fragebogen, der Oxford Knee Score und der Harris Hip Score erhoben. Ergebnisse: Das Durchschnittsalter lag bei 71 Jahren. Mehrheitlich lag eine persistierende Infektion der Knieprothese als Indikation vor. Der Mittelwert des Oxford Knee Score stieg von 24 Punkten präoperativ auf 38 Punkten postoperativ an. Die Auswertung des SF-36 Fragebogens erbrachte für die körperliche und soziale Funktionsfähigkeit im Mittel 78 und 85 Punkten. Schlussfolgerung: Die Ergebnisse nach Kniegelenksarthrodese fallen sehr unterschiedlich aus und in Abhängigkeit des präoperativen Leidensdrucks der Patienten werden gute bis befriedigende Ergebnisse erzielt. Der Patienten wird vor einem Verlust an Lebensqualität bewahrt.
Microbes involved in arsenic removal in passive treatment systems
Creators: name: Khoshnoodi, Maryam
Publisher: name: University of British Columbia
Year: 2014

description: Biogeochemical cycling of arsenic and speculation on mechanisms of arsenic removal are interest in the environmental remediation of contaminated sites. In the present study, combination of metagenomic molecular biology techniques with mineralogical analyses were used to study a biochemical reactor (BCR) that was successfully removing arsenic, zinc, copper and cadmium. First the metal and mineralogical content of the BCR solids was investigated. X-ray diffraction (XRD) and automated quantitative evaluation of minerals by scanning electron microscopy (QEMSCAN) were used for mineralogical characterization. Analysis indicated that sulfates and sulfides were the predominant types of Zn and As minerals formed in the BCR. Arsenic minerals were detected as sulfides (arsenopyrite, tennantite), arsenates(wihelmkleinite), oxides (unknown zinc arsenic oxides) and zincarsenic sulfides, which showed evidence of metal adsorption on the surfaces of other solids such as silicates. Energy-dispersive X-ray spectroscopy verified that arsenic was associated with iron, zinc and sometimes cadmium as arsenopyrite-type minerals. Using a SSU rRNA survey of the site, the following taxa were correlated with high metal content: Bacteroidetes, Synergistaceae, Victivallales, methanogens (Methanocorpusculum, Methanospirillum, Methanosarcina) and new phyla such as VadinHA17, M2PB4-65, candidate division WS6, RF3 and TM6. Next, enrichment culturing and arsenic chemical speciation monitoring were performed to assess potential for arsenic species transformations in the BCR. Most predominant groups in the As(III) and As(V) media, were Simplicispira (β-proteobacterium) and Sedimentibacter (Firmicutes), respectively. Chemical arsenic speciation monitoring of the enrichments suggested that arsenite oxidation and arsenate reduction occurred. These genera were not previously reported for arsenic transformation. Finally, functional metagenomic workflow was applied to study arsenic resistance genes. Functional screening and end-sequencing of large insert fosmid libraries demonstrated that arsenic(V) resistance genes were taxonomically widespread and different class of arsenic resistance genes related to periplasmic arsenate reduction, arsenite efflux, bioaccumulation (phosphate, metal transporters) and arsenite oxidation were present. Fewer genes were associated with dissimilatory arsenate reduction and arsenic volatilization mechanisms. Methanomicrobia were predominant in the BCR and identification of methanogen-related arsenic resistance genes indicated that methanogens potentially played a role in arsenic removal inside the BCR.
Rigid ball-polyhedra in Euclidean 3-space
Creators: name: Bezdek, Karoly
name: Naszodi, Marton
Publisher: name: arXiv
Year: 2011
Subjects: subject: Metric Geometry (math.MG)
subject: FOS: Mathematics
subject: 52C25, 52B10, 52A30

description: A ball-polyhedron is the intersection with non-empty interior of finitely many (closed) unit balls in Euclidean 3-space. One can represent the boundary of a ball-polyhedron as the union of vertices, edges, and faces defined in a rather natural way. A ball-polyhedron is called a simple ball-polyhedron if at every vertex exactly three edges meet. Moreover, a ball-polyhedron is called a standard ball-polyhedron if its vertex-edge-face structure is a lattice (with respect to containment). To each edge of a ball-polyhedron one can assign an inner dihedral angle and say that the given ball-polyhedron is locally rigid with respect to its inner dihedral angles if the vertex-edge-face structure of the ball-polyhedron and its inner dihedral angles determine the ball-polyhedron up to congruence locally. The main result of this paper is a Cauchy-type rigidity theorem for ball-polyhedra stating that any simple and standard ball-polyhedron is locally rigid with respect to its inner dihedral angles.
description: 11 pages, 2 figures
MPEC 2023-X05 : 2020 NL1
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Dealing with multiple criteria in test assembly
Creators: name: Veldkamp, Bernard P.
name: Matteucci, Mariagiulia
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2009
Subjects: SECS-S/01 Statistica
M-PSI/03 Psicometria

description: It is quite common that tests or exams are being used for more then one purpose. First of all, they are used to measure the ability of the students in a reliable manner. Besides, they can be used for pass/fail decisions or to predict future behavior of the candidate, like future job behavior or academic performance. The question remains how to assemble a test that can be used for all these different purposes, that is, how to assemble a multi-objective test. Besides, multiple objectives can result from different purposes, but also from the way test specifications have been implemented. For the WDM-model, for multidimensional IRT, for Cognitive Diagnostic CAT, but also for infeasibility analysis, multiple objective test assembly problems have to be solved.
In this paper, a 2-stage method is presented for dealing with multiple objectives in test assembly. In the normalization stage, all objectives are brought on a common scale. In the valorization stage, the different objectives are being compared and related to each other. The method is applied to a Guidance Test developed at the University of Bologna, and a comparison is made with more traditional single objective test assembly methods. The results clearly demonstrate the importance and relevance of multi-objective test assembly.
USIA Poll # 1962-LA13: The Economic and Political Climate of Opinion in Latin America
Creators: name: USIA
Publisher: name: Roper Center for Public Opinion Research
Year: 2021

description: Life conditions (7); land reform (8); tax reform (6); public and private industry (1); foreign companies (3); Fidel Castro (2); foreign economic aid (2); USA economic aid (8); 'Alianza Poza El Progresso'/Alliance for Progress (22); USA influence (7); communist influence (3); radio and cinema (6); American lifestyle (4).
USIA Poll: World Survey 2 - Public Opinion on Various Political Issues
Creators: name: USIA
Publisher: name: Roper Center for Public Opinion Research
Year: 2021

description: Problems facing the country: political or economical; views about communist and capitalist regimes; satisfaction with government views about influence of elites; preference of political leaders (from the country and foreign countries); international policy of US and USSR NOTE: Study conducted in four LA countries: Mexico (Mexico City) Brazil (Rio de Janeiro); Argentina (Buenos Aires); Venezuela (Caracas). Most important problem facing Mexico; satisfaction with present standard of living; citizen participation in politics; satisfaction with influence of the individual and various special interest groups in Mexico; needed improvements in Mexico; probalbe effect of a larger population; approval of family planning; preferred number of polotical parties; interest in international affairs; most admired Latin American polotical leader; recent Soviet and US conduct in international affairs; country most sensitive to Mexican interests; attitude toward Argentina, Brizil, USSR, US, China; effect of the US and USSR on Mexican development; US, USSR policy in Mexico; concurrence of US, USSR and Mexicn interests; assessment of extent of individual freedom in the US, USSR; distribution of wealth in the US and USSR; effort of world powers to prevent world war; preeminence of the US or USSR in military, economic, education, scientific development; preference for superior military strength of the US or USSR; projected strongest world power in the future; advisability of alliance with the US. Or USSR; knowledge of, attitude toward, country most respondible for, effect on future disarmament of recent nuclear test ban treaty; advisability of a nuclear test ban treaty without previsions for monitoring; advisability of alliance with communist or non-communist blocks; knowledge of Mexican membership in the United Nations (U.N.); evaluation of the UN, advisability of establishing a permanent UN armed force; assessment of treatment of black people in Brazil, US, USSR, South Africa; knowledge and influence on opinion toward Fidel Castro; effect of the Cuban revolution on Cubans; evaluation of recent US policy toward Cuba; influence of "Castroism" in Mexico; US support for military juntas in Latin America; approval of proposal to insure continuation of Latin American democracies; knowledge, evaluation of the progress and expected effectiveness of "Alliance for Progress" (AFP); emphasis in AFP on self-help or US aid; responsibility for success o f AFP; adequacy of Mexican, US backing for AFP; newspaper preference; frequency of listening to various foreign readio broadcasts and language in which heard.
Die Journey® Knietotalendoprothese - klinische und radiologische Ergebnisse einer prospektiven Studie
Creators: name: Knothe, Bettina
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2009
Subjects: subject: Online-Publikation
subject: Hochschulschrift
subject: 617.5
subject: 615

description: Innerhalb der letzten 30 Jahre hat sich die Knietotalendoprothetik zu einem etablierten und sehr erfolgreichen Therapiekonzept für die fortgeschrittene Gonarthrose entwickelt. Ziel dieser prospektiven Studie war die Untersuchung der Journey® Knietotalendoprothese (Smith & Nephew), die für ein hohes Flexionsvermögen und eine physiologische Kinematik des Kniegelenks entwickelt wurde. Zur Reduktion des Polyethylenabriebs wird die femorale Prothesenkomponente aus Oxinium® (Zirkoniumoxid) gefertigt. Es wurden 62 Patienten mit 70 Journey® Knietotalendoprothesen versorgt und über das erste postoperative Jahr nachuntersucht. Die klinischen Ergebnisse zeigen eine gute postoperative Flexion, gute Kniegelenksstabilität und ein hohes Mobilitäts- und Aktivitätslevel der Studienpatienten. Die radiologische Auswertung zeigte in 32% Lysesäume im Bereich des medialen Tibiaplateaus und in 4 Fällen eine gesicherte aseptische Lockerung der tibialen Prothesenkomponente. Augrund der radiologischen Ergebnisse ist eine ätiologische Klärung der aseptischen Lockerung unumgänglich.