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Re-Identifying the Hagedorn Transition [article]

Keith R. Dienes, Michael Lennek
2005 arXiv   pre-print
Moreover, we find that all tachyon-free closed string models in ten dimensions share the same (revised) Hagedorn temperature, resulting in a universal Hagedorn temperature for both Type II and heterotic  ...  These arguments allow us to re-identify the Hagedorn temperature for heterotic strings.  ...  at the Hagedorn temperature.  ... 
arXiv:hep-th/0505233v1 fatcat:zdd3c6zf2nfzfby3sax3o3yzii

The pressure and a possible hidden Hagedorn transition at large-N [article]

Barak Bringoltz, Michael Teper
2005 arXiv   pre-print
In the second part we seek for signs of a Hagedorn temperature T_H in pure lattice SU(N) gauge theories with N=8,10,12.  ...  PoS(LAT2005)175 The pressure and a possible hidden Hagedorn transition at large-N B.  ...  Nevertheless for PoS(LAT2005)175 The pressure and a possible hidden Hagedorn transition at large-N B.  ... 
arXiv:hep-lat/0509186v1 fatcat:j5zbtlztirhrnpwm5c3jomtjia

How to Extrapolate A String Model to Finite Temperature: Interpolations and Implications for the Hagedorn Transition [article]

Keith R. Dienes, Michael Lennek
2005 arXiv   pre-print
We then derive the proper extrapolation, and in the process uncover a universal Hagedorn temperature for all tachyon-free closed string theories in ten dimensions --- both Type II and heterotic.  ...  of the Hagedorn transition, see Ref  ...  IMPLICATIONS FOR THE HAGEDORN TRANSITION Let us now discuss the implications of these results for the Hagedorn transition [1, 4, 7] .  ... 
arXiv:hep-th/0507201v1 fatcat:zqm3h5g2qzhjzch5izthot6vna

In search of a Hagedorn transition inSU(N)lattice gauge theories at large-N

Barak Bringoltz, Michael Teper
2006 Physical Review D  
We extrapolate σ_eff(T) to even higher temperatures, and interpret the temperature where it vanishes as the Hagedorn temperature T_H.  ...  Since we expect c ∼ √ σ, we expect the Hagedorn transition to occur at T H = σ/c ∼ √ σ.  ...  Thus it is in this limit that the argument for a Hagedorn transition becomes most compelling.  ... 
doi:10.1103/physrevd.73.014517 fatcat:4dieexuzmzhf7nxm3t3yybvf74

Flavour anomalies meet flavour symmetry [article]

Innes Bigaran, Tobias Felkl, Claudia Hagedorn, Michael A. Schmidt
2022 arXiv   pre-print
We construct an extension of the Standard Model with a scalar leptoquark ϕ∼ (3,1,-13) and the discrete flavour symmetry G_f=D_17× Z_17 to explain anomalies observed in charged-current semi-leptonic B meson decays and in the muon anomalous magnetic moment, together with the charged fermion masses and quark mixing. The symmetry Z_17^ diag, contained in G_f, remains preserved by the leptoquark couplings, at leading order, and efficiently suppresses couplings of the leptoquark to the first
more » ... n of quarks and/or electrons, thus avoiding many stringent experimental bounds. The strongest constraints on the parameter space are imposed by the radiative charged lepton flavour violating decays τ→μγ and μ→ eγ. A detailed analytical and numerical study demonstrates the feasibility to simultaneously explain the data on the lepton flavour universality ratios R(D) and R(D^⋆) and the muon anomalous magnetic moment, while passing the experimental bounds from all other considered flavour observables.
arXiv:2207.06197v1 fatcat:ieicibgkivbrpcspw6sv2rdu4q

Perception of color change

Michael D'Zmura, Philippe Colantoni, John Hagedorn
2000 Color Research and Application  
This article reviews recent work on the perception of color in cases where color change leads to scission, or a perceived layering in depth of the visual field into chromatic processes. A model is proposed that predicts under what circumstances a layering in depth is perceived. The model takes into account shift in color and change in contrast; it helps to describe the colors and lightnesses of surfaces seen through a transparent filter or through fog.
doi:10.1002/1520-6378(2001)26:1+<::aid-col40>3.0.co;2-p fatcat:bqflanbndraxrd7sjwsugbenvq

Gibbs states over the cone of discrete measures [article]

Dennis Hagedorn and Yuri Kondratiev and Tanja Pasurek and Michael Röckner
2012 arXiv   pre-print
We construct Gibbs perturbations of the Gamma process on R^d, which may be used in applications to model systems of densely distributed particles. First we propose a definition of Gibbs measures over the cone of discrete Radon measures on R^d and then analyze conditions for their existence. Our approach works also for general Lévy processes instead of Gamma measures. To this end, we need only the assumption that the first two moments of the involved Lévy intensity measures are finite. Also
more » ... rm moment estimates for the Gibbs distributions are obtained, which are essential for the construction of related diffusions. Moreover, we prove a Mecke type characterization for the Gamma measures on the cone and an FKG inequality for them.
arXiv:1207.2973v1 fatcat:w3ra6aqxh5bkjdd2ktvfamxz5y

Tank Fouling Community Enhances Coral Microfragment Growth [article]

Chris Page, Riley Perry, Claire Lager, Jonathan Daly, Jessica Bouwmeester, E. Michael Henley, Mary Hagedorn
2022 bioRxiv   pre-print
Despite these successes, outcomes between facilities are often variable due in large part to differing coral culture conditions (Hagedorn et al. 2021; Petersen et al. 2006) .  ...  Recent studies with land-based culture techniques have led to increased growth and survival of young coral (Forsman et al. 2015; Hagedorn et al. 2021; Page et al. 2018) , and have been proposed to augment  ... 
doi:10.1101/2022.07.04.498770 fatcat:vyueknnsejcdpnymyigo7msxbi

Philosophy and Language

Eric W. Hagedorn, Michael Baur
2010 Proceedings of the American Catholic Philosophical Association  
My thanks to Michael Rota for raising, and Therese Scarpelli Cory for pressing, this point. 31 I do not have the space here to defend this claim at length, but such a defense would begin with the observation  ... 
doi:10.5840/acpaproc20108422 fatcat:yb6lv7ppvfb4jpaq3zu37mndae

Raumwirksamkeit der Digitalisierung. Ergebnisse einer breit angelegten Delphi Umfrage

Dirk Engelke, Carsten Hagedorn, Hans-Michael Schmitt, Claudio Buechel
2019 Zenodo  
Raumwirksamkeit der Digitalisierung – Ergebnisse einer breit angelegten Delphi Umfrage Digitalisierung verändert die Anforderungen an den Raum, dessen Nutzungen und damit Raum und Landschaft selbst. Für Technik und Fachplanungen kristallisieren sich die Entwicklungstrends allmählich heraus. Doch wie sich die Digitalisierung auf den Raum und die Planung konkret auswirkt, ist momentan noch kaum erforscht. Hier erste Antworten und Hilfestellungen für die Planung in den Gemeinden und Regionen zu
more » ... den, um deren Handlungsfähigkeit im Zeitalter der Digitalisierung zu erhöhen, ist Ziel des Forschungsprojekts "NUDIG – Nutzen der Digitalisierung für eine nachhaltige Landschafts- und Raumentwicklung". Auswirkungen der Digitalisierung Die konkreten Auswirkungen der Digitalisierung auf Verkehrs-, Raum- und Landschaftsplanung werden mittels Literatur- und Fallbeispielrecherche analysiert und bewertet. Um diese Ergebnisse zu plausibilisieren, sind Fachexpertinnen und Fachexperten gefragt, mithilfe einer zweistufigen Delphi-Umfrage, ihre Einschätzungen abzugeben. Gleichzeitig wird die Umfrage auch an die Fachverbände (SVI, FSU, BSLA) geschickt, womit eine breitere Abstützung dieser Annahmen und Thesen erreicht wird. Das zentrale Ergebnis der Umfrage ist, dass sich die Fachdisziplinen der Digitalisierung nicht verweigern können und die Raumnutzungen und die Wahrnehmung von Raum beeinflusst und verändert werden. Die Digitalisierung eröffnet für alle Raumkategorien Potenziale für eine nachhaltige Entwicklung. Sie wird sich aber nicht in allen gleich auswirken. Vor allem für die ländlichen Räume sind die Auswirkungen am wenigsten deutlich absehbar. Für die Agglomerationen lassen sich die Chancen bereits klarer benennen. Zu nennen sind beispielsweise in der Mobilität die Steigerung der Verkehrssicherheit, die Reduzierung der Umweltbelastung und eine effizientere Abwicklung des Verkehrs. Im Bereich der Landnutzung wird eine nachhaltigere Landwirtschaft, gezielte Lenkung und Information vo [...]
doi:10.5281/zenodo.3459432 fatcat:5szwa3menraqpijmglsf3ugcdu

Large-scale Analysis of Event Data

Stefan Hagedorn, Kai-Uwe Sattler, Michael Gertz
2015 Workshop Grundlagen von Datenbanken  
With the availability of numerous sources and the development of sophisticated text analysis and information retrieval techniques, more and more spatio-temporal data are extracted from texts such as news documents or social network data. Temporal and geographic information obtained this way often form some kind of event, describing when and where something happened. An important task in the context of business intelligence and document exploration applications is the correlation of events in
more » ... ms of their temporal, geographic or even semantic properties. In this paper we discuss the tasks related to event data analysis, ranging from the extraction of events to determining events that are similar in terms of space and time by using skyline processing and clustering. We present a framework implemented in Apache Spark that provides operators supporting these tasks and thus allows to build analysis pipelines.
dblp:conf/gvd/HagedornSG15 fatcat:bbywlntcffgz7iyqaj6op7chcu

Assessing coral sperm motility

Nikolas Zuchowicz, Jonathan Daly, Jessica Bouwmeester, Claire Lager, E. Michael Henley, C. Isabel Nuñez Lendo, Mary Hagedorn
2021 Scientific Reports  
Cryopreservation was done according to the methods of Hagedorn et al. 14 . Fertilisation success was assessed 3-6 h after fertilisation by counting cleaved and uncleaved eggs in each sample.  ...  in Hawaii, which experienced bleaching and elevated water temperatures in 2014 and 2015, demonstrated a significant reduction in motility, sometimes to almost zero, in response to a tenfold dilution (Hagedorn  ... 
doi:10.1038/s41598-020-79732-x pmid:33420097 pmcid:PMC7794428 fatcat:v3xvmhgh35cbpg2bdqilrtm2sq

Securing algal endosymbiont communities for reef-building corals [article]

Jessica Bouwmeester, Jonathan Daly, Mariko Quinn, E. Michael Henley, Claire Lager, Riley Perry, Christopher A. Page, Mary Hagedorn
2022 bioRxiv   pre-print
Cryopreservation and biobanking of coral sperm have been ongoing since 2008 in a variety of coral ecosystems (Hagedorn et al. 2012a; Hagedorn et al. 2012b; Hagedorn et al. 2019 ) and a similar effort  ...  Results Testing previously established cryopreservation protocols We tested the two protocols that had been developed by Hagedorn and Carter (Hagedorn and Carter 2015) , i.e. with and without encapsulation  ... 
doi:10.1101/2022.06.14.495714 fatcat:l4fcq3n4pvbehfnxgelsjijfca

A Framework for Scalable Correlation of Spatio-temporal Event Data [chapter]

Stefan Hagedorn, Kai-Uwe Sattler, Michael Gertz
2015 Lecture Notes in Computer Science  
Spatio-temporal event data do not only arise from sensor readings, but also in information retrieval and text analysis. However, such events extracted from a text corpus may be imprecise in both dimensions. In this paper we focus on the task of event correlation, i.e., finding events that are similar in terms of space and time. We present a framework for Apache Spark that provides correlation operators that can be configured to deal with such imprecise event data.
doi:10.1007/978-3-319-20424-6_2 fatcat:cnu56z7m7vaydo5rq56ocbc4wa

Surgical Management of Pseudophakic Retinal Detachments

Adarsh V. Arya, John W. Emerson, Michael Engelbert, Curtis L. Hagedorn, Ron A. Adelman
2006 Ophthalmology (Rochester, Minn.)  
Purpose: To compare the success of pars plana vitrectomy (PPV) versus scleral buckle (SB) in the management of uncomplicated pseudophakic retinal detachments (RDs). Design: Meta-analysis of published studies from 1966 to 2004 regarding surgical treatment of pseudophakic RDs. Participants: Two thousand two hundred thirty eyes: 1579 operated by SB, 457 by PPV, and 194 by the combined method of PPV and SB. Methods: We compared reattachment and functional success rates after 3 commonly practiced
more » ... gical interventions for pseudophakic RDs: PPV, SB, and the combined method. Twelve hundred thirty-two articles were retrieved from Medline and by cross-reference searches. Articles with sufficient data on preoperative evaluation, applied surgical technique, and anatomical and functional success rates were included in this analysis. Articles regarding complex pseudophakic RDs, treatment by laser or pneumatic retinopexy, studies with indistinguishable treatment outcomes from phakic and pseudophakic RDs, or reviews without original data were excluded. Main Outcome Measures: Anatomical success rates after initial surgical intervention and after reoperation(s) for primary failures, and best or final visual outcome at the end of follow-up. Results: Of 1232 papers, 29 matched inclusion criteria. After controlling for variation between study characteristics, PPV and the combined method resulted in higher initial reattachment rates (odds ratio [OR], 1.69; 95% confidence interval [CI], 1.07-2.68, and OR, 3.54; 95% CI, 1.57-7.97, respectively) as compared with SB. The differences between the procedures persisted for final reattachment outcome despite reoperation for primary failures. Final visual outcome also was found to depend on the choice of primary surgical intervention. After controlling for differences in the study characteristics, the probability of visual improvement was higher after PPV (OR, 2.34; 95% CI, 1.58 -3.46) or the combined method (OR, 11.52; 95% CI,) as compared with SB. Conclusions: A meta-analysis of published literature implies that PPV with or without SB is more likely to achieve a favorable anatomical and visual outcome than conventional SB alone in uncomplicated pseudophakic RDs. However, the inherent limitations of differing study protocols, quality of included studies, and publication bias in a pooled analysis should be recognized. With the increasing popularity of intraocular lens (IOL) implantation and concurrent longevity in life expectancy, there has been an increase in the incidence of pseudophakic retinal detachments (RDs). 1 One of the challenges in the management of pseudophakic RD is difficulty in visualization of the peripheral retina. This may be due to suboptimal dilation, anterior and posterior capsular opacities, cortical remnants, and optical aberrations from the implant. 2 The scleral buckle (SB) technique is an established technique for the management of phakic rhegmatogenous RDs. This technique is also one of the treatments for aphakic and pseudophakic RDs. 3 It is uncertain whether SB is a suitable surgical intervention for the management of pseudophakic RDs. Pars plana vitrectomy (PPV) has been suggested as an acceptable procedure for the treatment of aphakic and pseudophakic RDs. 4 There are several reports comparing differ-
doi:10.1016/j.ophtha.2006.05.044 pmid:17011954 fatcat:cyb4etain5c5lphnfac6a5wznq
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