cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Pricing Equity and Debt Tranches of Collateralized Funds of Hedge Fund Obligations: an approach based on Stochastic Time Change and Esscher Transformed Martingale Measure
Creators: name: Tassinari, Gian Luca
name: Corradi, Corrado
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2011
Subjects: SECS-S/06 Metodi matematici dell'economia e delle scienze attuariali e finanziarie

description: Collateralized Funds of Hedge Fund Obligations (CFOs) are relatively recent structured finance products linked to the performance of underlying funds of hedge funds. The capital structure of a CFO is similar to traditional Collateralized Debt Obligations (CDOs), meaning that investors are offered different rated notes and equity interest. CFOs are structured as arbitrage market value CDOs. The fund of funds manager actively manages
the fund to maximize total return while limiting price volatility within the guidelines of the structure. The aim of this paper is to provide a useful framework to evaluate Collateralized Funds of Hedge Fund Obligations, that is pricing the equity and the debt tranches of a CFO. The basic idea is to evaluate each CFO liability as an option written on the underlying pool of hedge funds. The value of every tranche depends on the evolution of the collateral portfolio during the life of the contract. Care is taken to distinguish between the fund of hedge funds and its underlying hedge funds. The proposed model incorporates skewness, excess-kurtosis and is able to capture more complex dependence structures among hedge fund log-returns than the mere correlation matrix. With this model it is possible to describe the impact of an equivalent change of probability measure not only on the marginal processes but also on the underlying dependence structure among hedge funds.
A multi-reaction monitoring and machine learning approach to investigate potential complement and coagulation-related protein biomarkers in autism spectrum disorder
Creators: name: Cao, Xueshan
name: Tang, Xiaoxiao
name: Feng, Chengyun
name: Lin, Jing
name: Zhang, Huajie
name: Liu, Qiong
name: Zheng, Qihong
name: Zhuang, Hongbin
name: Liu, Xukun
name: Li, Haiying.
name: Khan, Naseer Ullah
name: Shen, Liming
Publisher: name: figshare
Year: 2022
Subjects: classificationCode: 310109
subject: Proteomics and intermolecular interactions (excl. medical proteomics)

description: Autism spectrum disorder (ASD) is one of the most common neurological developmental disorders in children. The etiology and pathogenesis of the disease have not been clarified. Studies have shown that complement and coagulation pathway proteins were related to ASD. In this study, 33 proteins involved in this pathway in the plasma of children with ASD and control were compared and analyzed by proteomics multiple reaction monitoring (MRM) technology. Of which, 16 proteins were identified as differentially expressed proteins (DEPs) between children with ASD and controls, and their expression was up-regulated in the plasma of children with ASD. Among these, CFHR3, C4BPB, C4BPA, CFH, C9, F11, and SERPIND1were found to be altered in ASD plasma for the first time. Using the machine learning method, we obtained a protein panel composed of 12 differentially expressed proteins, which has the potential of ASD diagnosis. Finally, we summarized complement and coagulation pathway proteins associated with ASD, including some reports on the changes of complement proteins in ASD brain. For the first time, the complement and coagulation-related proteins of children with ASD were comprehensively detected and analyzed. The results further supported that altered blood complement and coagulation-related proteins were associated with ASD, and some complement and coagulation-related proteins may have diagnostic potential for ASD. Mechanisms related to complement and coagulation may play a key role in the pathogenesis of ASD.
Einfluss von Training auf die Kontrolle einer Gehirn-Computer-Schnittstelle durch Bewegungsvorstellung : eine MEG-Studie
Creators: name: Schneider, Bernadette
Publisher: name: Otto-von-Guericke-Universität Magdeburg
Year: 2018
Subjects: subject: Gehirn-Computer-Schnittstelle
subject: Magnetoencephalographie
subject: 616.80427

description: Brain-Computer-Interfaces (BCI) bieten der Medizin das Potential, in Zukunft motorisch irreversibel beeinträchtigen Patienten den Alltag zu erleichtern. Ein grundlegendes Problem dabei ist, dass BCIs nicht von allen Menschen zuverlässig angewendet werden können, denn ein beachtlicher Anteil der Probanden in bisherigen EEG-Studien ist nicht in der Lage, ein auf Motor Imagery (MI) basierendes BCI zu steuern. Dieses Phänomen nennt man BCI Illiteracy. In der vorliegenden MEG-basierten BCI-Studie werden die Zugänglichkeit der MEG zum BCI-Training sowie der Effekt eines fünftägigen Trainings auf die Performance eines MI-BCI untersucht. Dafür wurden 17 Probanden über fünf Tage trainiert, ein BCI mittels MI der rechten Hand bzw. des linken Fußes sowie an einem zusätzlichen Tag mittels realer Bewegung (RM) zu steuern. Entgegen der These, die MEG müsse aufgrund der höheren räumlichen Auflösung einen besseren Zugang zur Hirnaktivität bieten, ließ sich im MI-Paradigma ein hoher Anteil von über 35 % an BCI-Illiterates nachweisen. Auch war kein signifikanter genereller Trainingseffekt über den Trainingsverlauf nachzuvollziehen. Statistisch signifikante Unterschiede für den Vergleich von MI/RM der rechten Hand und des linken Fußes fanden sich bei literaten Probanden v. a. im Bereich des µ-Rhythmus (9-14 Hz) und lokalisiert über dem Motorkortex. BCI illiterate Probanden wiesen dagegen stark inkonsistente Aktivierungsmuster auf. Dies zeigt die Wichtigkeit der Modulationsfähigkeit des µ-Rhythmus für die effektive Steuerung eines MI/RM-BCI. Außerdem konnte festgestellt werden, dass die berechneten t-Werte eine Prädiktion darüber erlauben, ob ein Proband BCI illiterat ist (lineare Regression zw. t-Werten Tag1 und Performance Tag5 R = 0,714, p = 0,01).
The quantization of gravity in globally hyperbolic spacetimes
Creators: name: Gerhardt, Claus
Publisher: name: arXiv
Year: 2012
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: Differential Geometry (math.DG)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 83, 83C, 83C45

description: We apply the ADM approach to obtain a Hamiltonian description of the Einstein-Hilbert action. In doing so we add four new ingredients: (i) We eliminate the diffeomorphism constraints. (ii) We replace the densities $\sqrt g$ by a function $\f(x,g_{ij})$ with the help of a fixed metric $χ$ such that the Lagrangian and hence the Hamiltonian are functions. (iii) We consider the Lagrangian to be defined in a fiber bundle with base space $\so$ and fibers F(x) which can be treated as Lorentzian manifolds equipped with the Wheeler-DeWitt metric. It turns out that the fibers are globally hyperbolic. (iv) The Hamiltonian operator $H$ is a normally hyperbolic operator in the bundle acting only in the fibers and the Wheeler-DeWitt equation $Hu=0$ is a hyperbolic equation in the bundle. Since the corresponding Cauchy problem can be solved for arbitrary smooth data with compact support, we then apply the standard techniques of QFT which can be naturally modified to work in the bundle.
description: 26 pages, v4: some minor typos corrected, to appear in ATMP 2013
Dall'antropologia culturale dei nuovi media alla nuova letterarietà italiana in era post-tecnologica
Creators: name: Tonfoni, Graziella
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2012
Subjects: L-LIN/01 Glottologia e linguistica

description: In questo articolo, l' autrice si esprime come se volesse lei stessa, da questa sua serie di paragrafi, estrarre e derivare una applicazione cartacea, in forma di breve saggio monografico, da rendere poi convertibile, semplicemente seguendo la spaziatura da lei stessa predisposta, in una sequenza di lucidi. Per una presentazione pubblica in sede italianistica, estera, e nazionale, prevedendo la distribuzione ai partecipanti, che sono studiosi di letteratura contemporanea italiana, giornalisti e bibliotecari, di tali sue pagine, in formato di hand out.Procedendo dal riepilogo di una tratta storica estremamente significativa (Tonfoni G. 1980-2010), lei, ingegnere della informazione, conferma la continuità scientifica delle sue opere, di un trentennio, ricapitolata dalla voce enciclopedica, stabile e solida, di letteratura computazionale, termine finalmente ed inequivocabilmente accettato dalle comunità accademiche accreditate che riconoscono così le operazioni di restauro filologico effettuate.La letteratura computazionale, abbreviazione in italiano let-comp, accorpa, comprende, classifica e cataloga in modalità coerente, e finalmente unitaria, i numerosi e dispersi saggi,articoli e volumi dell' autrice, patrimonio coeso, completo e concluso, testimonianza e documento di una classicità effettivamente possibile, nel pensiero informatico, assai particolare, unica per genere e densità, nella storia della scienza dell'informazione. L'autrice vi annovera una sua parallela produzione, che copre lo stesso trentennio, seppure a tappe, ed in modalità discontinua, consistente in sue composizioni, narrazioni, raccolte di poesie edite, oppure inedite, e che tali resteranno. Ricorda l' esistenza di collezioni di serie di suoi quadri, sequenze di rappresentazioni visive, realizzazioni di questa autrice impegnata nel trentennio, anche in una attività di disegno e di grafica. Si tratta di una ulteriore scelta di espressività, sempre al servizio della didattica, per la facilitazione didascalica, della ritenzione di conoscenze complesse, oggi compatte. Ridefinisce quindi lei stessa il suo approccio interdisciplinare, composito, multimediale, multimodale, nell'ambito di una antropologia culturale particolarmente attenta ad analizzare le conseguenze provocate dai nuovi media, sul comportamento sociale e nell'immaginario collettivo. La sua prosa sempre sensibilissima ai continui mutamenti, si caratterizza per il cangiante stile, vera e propria miscela poetica, narrativa, saggistica, che si adatta a periodi limitrofi seppur fra loro tanto distanti.
Small energy scattering for the Zakharov system with radial symmetry
Creators: name: Guo, Zihua
name: Nakanishi, Kenji
Publisher: name: arXiv
Year: 2012
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35L70, 35Q55

description: We prove small energy scattering for the 3D Zakharov system with radial symmetry. The main ingredients are normal form reduction and the radial-improved Strichartz estimates.
description: 11 pages, corrected minor errors, published online in IMRN. arXiv admin note: text overlap with arXiv:1208.1657
Wechselwirkungen von Pseudomonas aeruginosa, Staphylococcus aureus und Candida albicans im polymikrobiellen Biofilm
Creators: name: Krause, Jan
Publisher: name: Otto-von-Guericke-Universität Magdeburg
Year: 2018
Subjects: subject: Pseudomonas aeruginosa
subject: Staphylococcus aureus
subject: Candida albicans
subject: 616.9041

description: Während der Biofilmbildung von Staphylococcus aureus und Pseudomonas aeruginosa mit Candida albicans veränderten sich die Zellzahlen der Mikroorganismen deutlich. Für Staphylococcus aureus und Candida albicans konnten synergistische Effekte beobachtet werden, wohingegen eine Kombination mit Pseudomonas aeruginosa qualitativ und quantitativ kompetitive Folgen hatte. Im polymikrobiellen Biofilm stellt Pseudomonas aeruginosa den dominierenden Mikroorganismus dar. Gegenseitige intermikrobielle physische Wechselwirkungen und Quorum-sensing scheinen dabei eine Rolle zu spielen. In dualen Candida albicans - Staphylococcus aureus - Biofilmen konnte eine starke Zunahme von Staphylococcus aureus - Zellen beobachtet werden. Prostaglandin E2 wurde hierbei als ein Schlüsselmolekül für die stimulierende Wirkung auf das Wachstum und die Biofilmbildung von Staphylococcus aureus identifiziert. Subinhibitorische Konzentrationen von Farnesol bewirkten einen ähnlichen Effekt jedoch in deutlich geringerer Ausprägung. Tyrosol hingegen zeigte keine Wirkung. Mit dem unspezifischen Cyclooxygenasehemmer Indometacin konnte die PGE2-Produktion von Candida albicans in dualen Biofilmen wirkungsvoll inhibiert werden, wodurch eine Hemmung des überproportionalen Wachstums von Staphylococcus aureus erreicht werden konnte. Der gleiche Effekt wurde bei gleichzeitiger Inkubation von S. aureus mit einem PGE2-defizienten C. albicans beobachtet.
Supplemental information - Estimating fine-scale changes in turbulence using the movements of a flapping flier
Creators: name: Lempidakis, Emmanouil
name: Ross, Andrew N.
name: Quetting, Michael
name: Garde, Baptiste
name: Wikelski, Martin
name: Shepard, Emily L. C.
Publisher: name: The Royal Society
Year: 2022
Subjects: subject: Environmental Science
subject: 40107 Meteorology
subject: FOS: Earth and related environmental sciences
subject: Computational Biology

description: This includes supplementary figures and tables cited in the main manuscript, and the description of the procedure followed for estimating convective and shear velocities
Optical-to-virial velocity ratios of local disk galaxies from combined kinematics and galaxy-galaxy lensing
Creators: name: Reyes, Reinabelle
name: Mandelbaum, Rachel
name: Gunn, James E.
name: Nakajima, Reiko
name: Seljak, Uros
name: Hirata, Chris M.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: In this paper, we measure the optical-to-virial velocity ratios Vopt/V200c of disk galaxies in the Sloan Digital Sky Survey (SDSS) at a mean redshift of = 0.07 and with stellar masses 10^9 M_sun < M_* < 10^11 M_sun. Vopt/V200c, the ratio of the circular velocity measured at the virial radius of the dark matter halo (\sim150 kpc) to that at the optical radius of the disk (\sim10 kpc), is a powerful observational constraint on disk galaxy formation. It links galaxies to their dark matter haloes dynamically and constrains the total mass profile of disk galaxies over an order of magnitude in length scale. For this measurement, we combine Vopt derived from the Tully-Fisher relation (TFR) from Reyes et al. with V200c derived from halo masses measured with galaxy-galaxy lensing. In anticipation of this combination, we use similarly-selected galaxy samples for both the lensing and TFR analysis. For three M_* bins with lensing-weighted mean stellar masses of 0.6, 2.7, and 6.5 x 10^10 M_sun, we find halo-to-stellar mass ratios M_vir/M_* = 41, 23, and 26, with 1-sigma statistical uncertainties of around 0.1 dex, and Vopt/V200c = 1.27\pm0.08, 1.39\pm0.06, 1.27\pm0.08 (1σ). Our results suggest that the dark matter and baryonic contributions to the mass within the optical radius are comparable, if the dark matter halo profile has not been significantly modified by baryons. The results obtained in this work will serve as inputs to and constraints on disk galaxy formation models, which will be explored in future work. Finally, we note that this paper presents a new and improved galaxy shape catalogue for weak lensing that covers the full SDSS DR7 footprint.
description: Matches accepted version in MNRAS; added subsection on Sec. 6.3 and expanded Table 4; 38 pages, 19 figures
Sale of Raw Milk in Northern Italy: Food Safety Implications and Comparison of Different Analytical Methodologies for Detection of Foodborne Pathogens
Creators: name: Giacometti, Federica
name: Serraino, Andrea
name: Finazzi, Guido
name: Daminelli, Paolo
name: Losio, Marina Nadia
name: Piva, Silvia
name: Florio, Daniela
name: Riu, Raffaela
name: Zanoni, Renato Giulio
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2012
Subjects: VET/04 Ispezione degli alimenti di origine animale

description: The safety of raw milk sold in Northern Italy was investigated in relation to hygiene quality parameters and
presence of Salmonella spp., Listeria monocytogenes, thermotolerant Campylobacter, and Verocytotoxin producing
Escherichia coli O157:H7. The performance of different analytical methods used—official culture method (ISO),
modified Bacteriological Analytical Manual cultural method (mBAM), and polymerase chain reaction (PCR)—
was evaluated. The presence of Mycobacterium avium subsp. paratuberculosis (Map) was investigated only by
PCR. All samples met regulations for alkaline phosphatase and inhibitory substance, while 18% and 44.8% of
samples collected from vending machines had, respectively, somatic cell count (SCC) > 300,000/mL and total
bacterial count (TBC) > 50,000CFU/mL. The correlation between hygienic quality parameters in samples collected
from bulk tank and vending machines showed a significant increase of TBC in vending machines meaning
that raw milk was mishandled during distribution and sale. All pathogens investigated were detected in raw
milk sold at vending machines; a total of five samples (5%) had at least one pathogen, of which two were
detected by PCR and three by mBAM. None of the samples was positive by cultural ISO methods. Even if the
comparison of analytical methods showed that none performs significantly better than the others, testing a
higher volume of milk (25 versus 210 mL) affects significantly the detection rate of pathogens. Three samples
(3%) were positive for Map, suggesting that raw milk is a significant source of Map exposure for consumers. The
observed TBC increase and the detection of several pathogenic bacteria pose questions on the safety of raw milk;
the use of ISO seems inefficient in detecting a low contamination level of pathogens in milk and consequently not
appropriate as official method for testing. In order to ensure consumer’s safety, a new approach for the raw milk
chain is required.
Developing quality assurance procedures for gated volumetric modulated arc therapy in stereotactic ablative radiation therapy
Creators: name: Viel, Francis
Publisher: name: University of British Columbia
Year: 2014

description: The purpose of this project is to develop a quality assurance (QA) procedure for gated volumetric modulated radiation therapy (VMAT) in stereotactic ablative radiation therapy (SABR) for liver cancer treatments and investigate the gating parameters for acceptable plan delivery in terms of the dose to a moving volume and treatment delivery time. 10 patient plans for VMAT SABR liver were created using the Eclipse™ treatment planning system (TPS). The plans were then transferred to a CT-scanned (computed tomography) Quasar™ phantom (i.e. a water-equivalent, geometrically simplified representation of a patient) and delivered on a TrueBeam™ linear accelerator using a 10FFF (flattening filter free) beam and Varian’s real-time position management (RPM) system for respiratory gating. Two kinds of breathing patterns were used: free breathing (FB) and an interrupted (~5 s pause) end of exhale coached breathing (CB) pattern. Ion chamber and Gafchromic™ film measurements were acquired for a gated delivery while the phantom moved under the described breathing patterns and a non-gated, stationary phantom delivery. The gate window was set to obtain a range of residual target motion from 2-5 mm. All gated deliveries have been shown to be dosimetrically equivalent to the static deliveries with differences in point dose measurements under 1% and average gamma (2%, 2 mm) agreement above 98.7%. Comparison with the treatment planning system resulted also in good agreement, with differences in point dose measurements under 2.5% and average gamma (3%, 3 mm) agreement of 92%. The use of a CB pattern increases significantly the duty cycle compared with free breathing and allows for shorter treatment times. Gated VMAT treatments have been delivered successfully to a motorized phantom. FB patterns contain considerable variability and it is difficult to achieve acceptable results even with very small gate windows. However, a CB pattern combined with a sufficiently small gate resulted in acceptable dose distributions that can be delivered in a reasonable amount of time.
On (Subgame Perfect) Secure Equilibrium in Quantitative Reachability Games
Creators: name: Brihaye, Thomas
name: Bruyère, Véronique
name: De Pril, Julie
name: Gimbert, Hugo
Publisher: name: arXiv
Year: 2012
Subjects: subject: Computer Science and Game Theory (cs.GT)
subject: Logic in Computer Science (cs.LO)
subject: FOS: Computer and information sciences
subject: D.2.4

description: We study turn-based quantitative multiplayer non zero-sum games played on finite graphs with reachability objectives. In such games, each player aims at reaching his own goal set of states as soon as possible. A previous work on this model showed that Nash equilibria (resp. secure equilibria) are guaranteed to exist in the multiplayer (resp. two-player) case. The existence of secure equilibria in the multiplayer case remained and is still an open problem. In this paper, we focus our study on the concept of subgame perfect equilibrium, a refinement of Nash equilibrium well-suited in the framework of games played on graphs. We also introduce the new concept of subgame perfect secure equilibrium. We prove the existence of subgame perfect equilibria (resp. subgame perfect secure equilibria) in multiplayer (resp. two-player) quantitative reachability games. Moreover, we provide an algorithm deciding the existence of secure equilibria in the multiplayer case.
description: 32 pages. Full version of the FoSSaCS 2012 proceedings paper
Resistance evolution of hypervirulent carbapenem-resistant Klebsiella pneumoniae ST11 during treatment with tigecycline and polymyxin
Creators: name: Jin, Xi
name: Chen, Qiong
name: Shen, Fang
name: Jiang, Yan
name: Wu, Xueqing
name: Hua, Xiaoting
name: Fu, Ying
name: Yu, Yunsong
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Genetics
subject: Molecular Biology
subject: Pharmacology
subject: Biotechnology
subject: Evolutionary Biology
subject: Environmental Sciences not elsewhere classified
subject: Ecology
subject: Immunology
subject: FOS: Clinical medicine
subject: Cancer
subject: Hematology
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Plant Biology
subject: Virology

description: Hypervirulent carbapenem-resistant Klebsiella pneumoniae (hv-CRKP) has recently aroused increasing attention, especially ST11, the predominant CRKP clone in China. Here, we report a case of hv-CRKP-associated infection and reveal the in-host evolution of its mechanism of resistance to tigecycline and polymyxin under clinical therapy. A total of 11 K. pneumoniae carbapenemase (KPC)-producing CRKP strains were consecutively isolated from a male patient who suffered from continuous and multisite infections. String and antimicrobial susceptibility tests identified seven hypermucoviscous strains and three tigecycline-resistant and four colistin-resistant strains. Galleria mellonella larvae infection model confirmed the hypervirulence. Pulsed-field gel electrophoresis (PFGE) separated three PFGE clusters among all strains, and further Southern blotting detected that blaKPC-2 was located on the same-sized plasmid. Whole-genome sequencing showed that all strains belonged to the hv-CRKP ST11-KL64 clone. Diverse hypervirulence factors and resistance genes were identified. Further sequencing with the Nanopore platform was performed on the CRKP-Urine1 strain, which contained one virulence plasmid (pVi-CRKP-Urine1) and two resistance plasmids (pKPC-CRKP-Urine1 and pqnrS1-CRKP-Urine1). The gene mutations responsible for tigecycline or colistin resistance were then amplified with PCR followed by sequencing, which indicated that mutations of ramR and lon were the potential loci for tigecycline resistance and that the pmrB, phoQ and mgrB genes for colistin resistance. A novel frameshift mutation of lon was identified in the high-level tigecycline-resistant strain (MIC, 128 mg/L). The results indicate that the hypervirulent ST11-KL64 clone is a potential threat to antiinfection treatment and is capable of rapid and diverse evolution of resistance during tigecycline and polymyxin treatment.
Untersuchungen zum Stellenwert der Splenektomie im Rahmen der operativen Therapie des Magenkarzinoms
Creators: name: Heine, Kristin
Publisher: name: Otto-von-Guericke-Universität Magdeburg
Year: 2018
Subjects: subject: Magenkrebs
subject: Splenektomie
subject: 616.99433

description: Die Therapie des Magenkarzinoms umfasst bei kurativer Intention ein radikales chirurgisches Vorgehen, das von der Lokalisation, der histologischen Entität und dem lokalen Wachstumsverhalten des Tumors abhängt und neben der (Teil-)Resektion des Magens die systematische Entfernung der regionalen Lymphknoten und ggf. angrenzender Strukturen, wie zum Beispiel der Milz, enthält. Der Stellenwert der Splenektomie in der chirurgischen Therapie des Magenkarzinoms wird in der Literatur kontrovers diskutiert. Einige Autoren argumentieren, dass nur durch eine Splenektomie eine adäquate Lymphadenektomie insbesondere im Bereich des Milzhilus und damit im Lymphabstromgebiet von v.a. proximal und großkurvaturseitig gelegenen Magenkarzinomen gelinge. Demgegenüber steht die Tatsache, dass die Milz eine bedeutende immunologische Funktion innehat und eine Splenektomie mit einer erhöhten Rate postoperativer Komplikationen, aber auch einem schlechteren 5-Jahresüberleben einhergeht. In der vorliegenden Arbeit wurden Daten von 2545 Patienten, welche in kurativer Intention aufgrund eines Magenkarzinoms operiert wurden, hinsichtlich des Einflusses der Splenektomie untersucht. Die Splenektomierate lag im Gesamtkrankengut bei 11,1%. Es traten signifikant häufiger allgemeine postoperative Komplikationen auf, wenn die Operation mit einer Milzentfernung einherging - 43,8% versus 29,7%, p < 0,001. Bei der Untersuchung der Hospitalletalität konnte eine dreifach erhöhte Sterblichkeit für Patienten mit einem AEG-Tumor nachgewiesen werden, wenn eine Splenektomie erfolgt war. Weiterhin führte eine Milzentfernung zu einem signifikant schlechteren 5- Jahresüberleben sowohl im Gesamtkrankengut als auch in Abhängigkeit von der Tumorlokalisation. Der Erhalt der Milz sollte demnach grundsätzlich angestrebt werden. Die simultane Splenektomie kann nur durch eine direkte Tumorinfiltration oder eine irreparable Milzverletzung gerechtfertigt werden.
Effect of geometry on the behavior of steady Newtonian fluid in a multiply connected domain
Creators: name: Montazer, Mohammad
Publisher: name: University of British Columbia
Year: 2014

description: We start with the prototype problem of flow of a Newtonian fluid in the annular region between two infinitely long circular cylinders, with the given velocity and temperature on the boundaries of the domain. Then we will try to find out how does geometry affect the behavior of the flow inside of the domain. We will explore two invariant mappings K_T and K_psi , such that under appropriate conditions on the boundary, the mapping K_T would preserve solution of temperature field from one domain to another and the mapping k_psi would preserve solution of velocity field. We will prove that if a mapping is conformal, it would preserve the convection-diffusion equation in both domains. After that, we will find which subsets of the conformals would also preserve the velocity field as well. In order to answer that question, we will obtain the required condition for the mapping , such that it would preserve both velocity and temperature fields, from one domain to another.
Noise Sensitivity in Continuum Percolation
Creators: name: Ahlberg, Daniel
name: Broman, Erik
name: Griffiths, Simon
name: Morris, Robert
Publisher: name: arXiv
Year: 2011
Subjects: subject: Probability (math.PR)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: We prove that the Poisson Boolean model, also known as the Gilbert disc model, is noise sensitive at criticality. This is the first such result for a Continuum Percolation model, and the first for which the critical probability p_c \ne 1/2. Our proof uses a version of the Benjamini-Kalai-Schramm Theorem for biased product measures. A quantitative version of this result was recently proved by Keller and Kindler. We give a simple deduction of the non-quantitative result from the unbiased version. We also develop a quite general method of approximating Continuum Percolation models by discrete models with p_c bounded away from zero; this method is based on an extremal result on non-uniform hypergraphs.
description: 42 pages
The Fabrication and Characterization of High-
Performance InP DHBTs (Invited)
Creators: name: Bolognesi, C.R.
name: Liu, H.G.
name: Watkins, S.P.
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2004
Subjects: ING-INF/01 Elettronica

description: We review the salient factors in the
development of high-speed type-II NpN InP/GaAsSb/InP
DHBTs. This new technology has swiftly transitioned from
its 1997 launch in the university laboratory, to industrial
production in 2004: the short incubation period can be read
as clear evidence that InP/GaAsSb/InP DHBTs afford real
world strategic advantages for the organizations that were
first to reach market with it. The present article surveys the
various approaches taken in the development 300 GHz
fT/fMAX DHBTs for telecom and test applications: we present
both the advantages and shortcomings associated with
InP/GaAsSb/InP DHBTs. The current performance limiting
factors are described and tentative projections are made for
the future.
Faster and Smaller with Carbon Nanotubes?
Creators: name: Seidel, Robert V.
name: Graham, Andrew P.
name: Duesberg, Georg S.
name: Liebau, Maik
name: Unger, Eugen
name: Kreupl, Franz
name: Hoenlein, Wolfgang
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2004
Subjects: ING-INF/01 Elettronica

description: Carbon Nanotubes seem to be one of the
most promising candidates for nanoelectronic devices
beyond presumable scaling limits of silicon and compound
semiconductors and independent from lithographic
limitations. Discovered only about a decade ago, there has
been a tremendous advance in the field of carbon
nanotubes. Their exciting properties, especially with respect
to electronic applications, and their fabrication methods will
be discussed. A variety of Carbon Nanotube based electronic
devices, such as interconnects, transistors, and power
transistors, will be presented. However, large-scale
integration of carbon nanotubes seems to be a huge
challenge. Some of the integration issues will be critically
addressed and carbon nanotubes will be compared with
some other nanoscale approaches.
Ist die Behandlungsqualität von Rektumkarzinompatienten in Krankenhäusern mit einem zertifizierten Darmkrebszentrum besser als in Krankenhäusern ohne ein Darmkrebszentrum?
Creators: name: Kusian, Henry
Publisher: name: Otto-von-Guericke-Universität Magdeburg
Year: 2018
Subjects: subject: Mastdarmkrebs
subject: 616.99434

description: In den letzten Jahren kam es in Deutschland zunehmend zur Zertifizierung von Krankenhäusern zu einem Darmkrebszentrum (1). Um die qualitative Bedeutung dieser Zertifizierung für die Patienten beurteilen zu können, wurde diese Studie durchgeführt. Allgemein wird eine bessere Versorgung von Rektumkarzinompatienten in Darmkrebszentren angenommen, somit wurden in zwei Modellen Behandlungsergebnisse zwischen Darmzentren und Nicht-Darmzentren verglichen, sowie vor und nach der Zertifizierung. Zur Beantwortung dieser Frage wurden die am An-Institut erfassten 14.905 Patienten der Jahre 2006 und 2008 unter Verwendung einer Überlebenszeitanalyse und einer angeschlossenen Match-Pair-Analyse untersucht. Hierbei wiesen von den 271 eingeschlossenen Krankenhäusern 55 Krankenhäuser ein zertifiziertes Darmkrebszentrum auf (11.281 Patienten ohne Darmkrebszentrum / 3.624 Patienten mit Darmkrebszentrum). Zusammenfassend zeigten sich in den Nicht-Darmkrebszentren, bei kränkeren Patienten und fortgeschritteneren Tumorstadien geringfügig erhöhte intraoperative, allgemeine und spezielle Komplikationen als in den Darmkrebszentren. Die operative Qualität war in den zertifizierten und in den nicht zertifizierten Krankenhäusern vergleichbar. Das tumorspezifische Überleben (5-Jahresüberleben sowie Letalität) unterschied sich nicht signifikant voneinander. Die Ergebnisse der Studie zeigten, dass die Tatsache der Zertifizierung keine automatische Verbesserung der Behandlungsqualität bedeutete und Krankenhäuser, die an einer Qualitätssicherungsstudie teilnahmen, vergleichbare Ergebnisse auch ohne Aufwand einer Zertifizierung erreichten.
On-board Applications of Active Microwave
Technologies to GALILEO and other European Space
Programs
Creators: name: Coromina, F.
name: Deborgies, F.
name: Emma, F.
name: Gatti, G.
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2004
Subjects: ING-INF/01 Elettronica

description: Space programs are highly dependant on active
microwave technologies. This paper will highlight the
applications where these technologies play a fundamental
role, pointing our strength and weakness. Special focus will
be made on the European Satellite Navigation Program
GALILEO.
Search for B_s to mu^+ mu^- and B^0 to mu^+ mu^- decays
Creators: name: CMS Collaboration
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: A search for the rare decays B_s to mu+ mu- and B^0 to mu^+ mu^- is performed in pp collisions at sqrt(s) = 7 TeV, with a data sample corresponding to an integrated luminosity of 5 inverse femtobarns collected by the CMS experiment at the LHC. In both decays, the number of events observed after all selection requirements is consistent with the expectation from background plus standard model signal predictions. The resulting upper limits on the branching fractions are Br(B_s to mu^+ mu^-) < 7.7E-9 and Br(B^0 to mu^+ mu^-) < 1.8E-9 at 95% confidence level.
description: Submitted to the Journal of High Energy Physics
Towards Integrated Transceivers in mm-Wave
Applications
Creators: name: Bird, Neil. C.
name: Sanduleanu, Mihai A.T.
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2004
Subjects: ING-INF/01 Elettronica

description: In this paper, we discuss the trend towards
higher frequencies in many consumer RF applications. This
trend is, on the one hand, a consequence of an apparently
endless demand for increased data rates and, on the other
hand, being enabled by ongoing developments in IC
technology and circuit design. After outlining some of the
application trends that are defining the need for integrated
transceivers operating in the mm-Wave region, the resulting
technology and circuit challenges will be examined.
Strategy Analytics Insight
Current Status & Future Prospects for GaAs
Creators: name: Anwar, Asif
name: Entwistle, Stephen
name: Taylor, Chris
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2004
Subjects: ING-INF/01 Elettronica

description: Whilst silicon technologies will continue to
impinge on GaAs markets, GaAs technology will continue to
play a pivotal role in the cellular handset market, increasing
its penetration of PA applications and retaining a near 100
percent penetration of the switch IC segment. WLAN and
millimetre-wave auto RADAR applications will provide
emerging growth opportunities for the GaAs industry.
Overcapacity remains a problem in the GaAs device
industry and the market will see continuing consolidation.
Fixed Point Theorem for Non-Self Maps of Regions in the Plane
Creators: name: Ostrovski, Georg
Publisher: name: arXiv
Year: 2011
Subjects: subject: Dynamical Systems (math.DS)
subject: General Topology (math.GN)
subject: FOS: Mathematics
subject: 54H20, 54H25, 37B45, 37E30

description: Let X and Y be compact, simply connected and locally connected subsets of R^2, and let f : X -> Y be a homeomorphism isotopic to the identity on X. Generalizing Brouwer's plane translation theorem for self-maps of the plane, we prove that f has no recurrent (in particular, no periodic) points if it has no fixed points.
description: 11 pages, 5 figures; significant improvement and generalization of the result in the first version ("Jordan domains" replaced by "compact, simply connected, locally connected sets" in the assumptions of the main result)
Untersuchungen zu Kantengrammatiken und Valenzgrammatiken
Creators: name: Stiebe, Ralf
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2000
Subjects: Elektronische Publikation
Hochschulschrift

description: In der vorliegenden Arbeit wird die Erzeugung von Graphenfamilien durch Kantengrammatiken untersucht. Die von F. Berman eingeführten Kantengrammatiken erzeugen binäre Wortrelationen; ein Paar von Wörtern der Länge n wird als Kante im n-ten Graphen interpretiert. In dieser Dissertation werden die Erzeugungsmächtigkeit, Abschluß- und Entscheidbarkeitseigenschaften von Kantengrammatiken untersucht. Wichtige Resultate sind die Entscheidbarkeit der Existenz von Graphen mit Eigenschaften, die durch Logik 1. Stufe beschreibbar sind, und die Unentscheidbarkeit des analogen Problems für kompliziertere Eigenschaften, sowie die Äquivalenz einer Teilklasse zu parallelen deterministischen Knotenersetzungs-Grammatiken. Die von Paun eingeführten Valenzgrammatiken sind Grammatiken, deren Regeln durch Elemente aus einem gegebenen Monoid bewertet sind. Zulässig sind mit dem neutralen Element bewertete Ableitungen. In der Arbeit wird gezeigt, daß sich die von Kantengrammatiken erzeugten formalen Sprachen durch Valenzgrammatiken über der Gruppe (Z,+,0) charakterisieren lassen. Das wichtigste Resultat zu Valenzgrammatiken ist die Konstruktion von Normalformen für Valenzgrammatiken über den Gruppen der k-dimensionalen ganzzahligen Vektoren. Außerdem werden Valenzgrammatiken, die schlanke Sprachen erzeugen, näher untersucht. Ergebnisse werden schließlich benutzt, um die Entscheidbarkeit des Elementproblems für kontextfreie Kantengrammatiken zu zeigen.
description: The generation of graph families by edge grammars is investigated in this thesis. Edge grammars, introduced by F. Berman, generate binary word relations; a pair of words of length n is interpreted as an edge of the n-th graph. We investigate the generative power, closure and decidability properties of edge grammars. Important results are the decidability of the existence of graphs with properties definable by means of first order logic, the undecidability of the analogous problem for more complicated properties (e.g., connectedness), and the equivalence of a subfamily of edge grammars with parallel deterministic node replacement grammars. Valence grammars, as introduced by Paun, are grammars whose rules are valuated by elements of a given monoid. Only derivations with neutral valuations are allowed. In this thesis it is shown that formal languages generated by edge grammars can be characterized by valence grammars over the group (Z,+,0). The most important result on valence grammars is the construction of normal forms for valence grammars over the groups of k-dimensional integer vectors. Moreover, we investigate valence grammars generating slender languages. The results are finally used to show decidability of the membership problem for context-free edge grammars.
Additional file 4: of Characterization of molecular diversity and genome-wide association study of stripe rust resistance at the adult plant stage in Northern Chinese wheat landraces
Creators: name: Yao, Fangjie
name: Zhang, Xuemei
name: Ye, Xueling
name: Li, Jian
name: Long, Li
name: Yu, Can
name: Li, Jing
name: Wang, Yuqi
name: Wu, Yu
name: Wang, Jirui
name: Jiang, Qiantao
name: Li, Wei
name: Ma, Jian
name: Wei, Yuming
name: Zheng, Youliang
name: Chen, Guoyue
Publisher: name: figshare
Year: 2019
Subjects: subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Genetics
subject: Biotechnology
subject: Evolutionary Biology
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Marine Biology
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Plant Biology
subject: Virology

description: The genome specific comparisons of molecular diversity between subpopulation 1 and subpopulation 2 landraces. (DOCX 9540â kb)
Categorification of quantum Kac-Moody superalgebras
Creators: name: Hill, David
name: Wang, Weiqiang
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Algebra (math.QA)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics

description: We introduce a non-degenerate bilinear form and use it to provide a new characterization of quantum Kac-Moody superalgebras with no isotropic odd simple roots. We show that the spin quiver Hecke algebras introduced by Kang-Kashiwara-Tsuchioka provide a categorification of half the quantum Kac-Moody superalgebras, using the recent work of Ellis-Khovanov-Lauda. A new idea here is that a super sign is categorified as spin (i.e., the parity-shift functor).
description: v2. Minor typos corrected and references updated. To appear in Trans. AMS, Article ID TRAN6128
Logarithmic Corrections to Schwarzschild and Other Non-extremal Black Hole Entropy in Different Dimensions
Creators: name: Sen, Ashoke
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Euclidean gravity method has been successful in computing logarithmic corrections to extremal black hole entropy in terms of low energy data, and gives results in perfect agreement with the microscopic results in string theory. Motivated by this success we apply Euclidean gravity to compute logarithmic corrections to the entropy of various non-extremal black holes in different dimensions, taking special care of integration over the zero modes and keeping track of the ensemble in which the computation is done. These results provide strong constraint on any ultraviolet completion of the theory if the latter is able to give an independent computation of the entropy of non-extremal black holes from microscopic description. For Schwarzschild black holes in four space-time dimensions the macroscopic result seems to disagree with the existing result in loop quantum gravity.
description: LaTeX, 40 pages; corrected small typos and added references
К вопросу о сущности инвестиционного проектирования
Creators: name: А. Ш. Ширинов
Publisher: name: Экономика и бизнес: теория и практика
Year: 2019
Subjects: инвестиционное проектирование
инвестиционные проекты
характерные признаки проекта
управлеческие решения
проектно-сметная документация
бизнес-план.
investment design
investment projects
characteristic features of the project
management decisions
design and estimate documentation
business plan.

description: В статье представлен анализ альтернативных трактовок сущности инвестиционных проектов. Сформулированы характерные признаки инвестиционных проектов, к числу которых относятся: признаки «изменений» «бюджета», «ограниченности требуемых ресурсов», «комплексности», «разграничения». Обобщение разичных подходов позволило сформулирвать авторскую трактовку инвестиционного проекта, в котором учитывается доходность, сроки, объемы и иные параметры экономической целесообразности осуществления капитальных вложений.
description: The article presents an analysis of alternative interpretations of the essence of investment projects. The characteristic features of investment projects have been formulated, among which are: signs of “changes” in the “budget”, “limitations of the required resources”, “complexity”, and “delineation”. The generalization of different approaches allowed to formulate the author's interpretation of the investment project, which takes into account the profitability, terms, volumes and other parameters of the economic feasibility of capital investments.
Magnetically amplified light-shining-through-walls via virtual minicharged particles
Creators: name: Döbrich, Babette
name: Gies, Holger
name: Neitz, Norman
name: Karbstein, Felix
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We show that magnetic fields have the potential to significantly enhance a recently proposed light-shining-through-walls scenario in quantum-field theories with photons coupling to minicharged particles. Suggesting a dedicated laboratory experiment, we demonstrate that this particular tunneling scenario could provide access to a parameter regime competitive with the currently best direct laboratory limits on minicharged fermions below the $\mathrm{meV}$ regime. With present day technology, such an experiment has the potential to even overcome the best model-independent cosmological bounds on minicharged fermions with masses below $\mathcal{O} (10^{-4}) \mathrm{eV}$.
description: 21 pages, 7 figures; some clarifications added, matches journal version
MMICs for the Australia Telescope Millimetre-Wave
Receiver System
Creators: name: Gough, R.
name: Archer, J.
name: Roberts, P.
name: Moorey, G.
name: Graves, G.
name: Bowen, M.
name: Kanoniuk, H.
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2004
Subjects: ING-INF/01 Elettronica

description: Cryogenically cooled receiver systems
covering three millimetre-wave observing bands are being
designed for the Australia Telescope National Facility
Compact Array (ATCA), situated near Narrabri in northern
New South Wales, Australia. The ATCA consists of six 22-
metre dish antennas capable of operating up to 115 GHz.
Millimetre-wave receiver systems covering the frequency
ranges 16 to 26 GHz and 85 to 105 GHz have been installed.
Future upgrades are planned to extend the upper frequency
range to 115 GHz and to include coverage of the 30 to
50 GHz band.
A range of monolithic microwave integrated circuits
(MMICs) has been designed for the new millimetre-wave
receiver systems. Indium phosphide MMIC low noise
amplifiers in the front end are cryogenically cooled to
15 Kelvin to minimize their noise and maximise the
sensitivity of the receiver system. Custom designed indium
phosphide and gallium arsenide millimetre-wave MMIC
mixers, power amplifiers and doublers are also used in the
conversion and local oscillator systems.
The impact of sales promotions on store performance: a structural vector autoregressive (SVAR) approach
Creators: name: Freo, Marzia
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2005
Subjects: SECS-P/05 Econometria
SECS-S/03 Statistica economica

description: The present paper analyses the impact of sales promotions on store performance, in the short and long term, from the retailer’s point of view. Relationships among promoted and regular sales in the hypermarkets of  a large-scale retail chain of national importance, are investigated by means of a structural vector autoregressive model (SVAR).
Statistically significant effects of sales promotions in the heavy household section on store sales are found in the short-run; these promotions produce additional sales and thus act as an attractive factor. Promotions in textile category, on the contrary, produce an immediate negative effect on net sales. In the long-run, negative statistically significant effects on regular sales are detected when continuative promotions are implemented within perishables’ category.