cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Flüssigkristalle im Grenzgebiet zwischen bananenförmigen und dimeren Mesogenen
Creators: name: Pelz, Karsten
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2005
Subjects: subject: Elektronische Publikation
subject: Zsfassung in engl. Sprache
subject: 530.429

description: Die vorliegende Arbeit umfaßt die Synthese neuer Flüssigkristalle gebogener Molekülgestalt, die Charakterisierung ihres Mesophasenverhaltens sowie grundlegende Betrachtungen zu kolumnaren Phasen von bent-core-Mesogenen. Die synthetisierten Substanzen stecken ein Terrain ab, welches sich über den Bereich eher konventioneller Dimere kalamitischer Mesogene (z. B. substituierte Bisbenzoate von α,ω-Alkandiolen) bis hin zu bent-core-Mesogenen (z. B. substituierte Bisbenzoate des 4-Hydroxy-benzylalkohols) erstreckt. Diese Verbindungen weisen ein vielschichtiges, interessantes und häufig unkonventionelles Mesophasenverhalten auf. Besonders hervorzuheben sind homologe Reihen von Dimeren, deren Phasensequenzen zwischen konventionellen smektischen und "Bananen"-Phasen alternieren, desweiteren ungewöhnliche Phasenfolgen sowie die durch viele Beispiele belegte Untergliederung der B1-Phasen in drei verschiedene kolumnare Mesophasen der bent-core-Mesogene. Erstmals wurden Modelle flüssigkristalliner Phasen basierend auf der Anwendung von Schichtgruppen entwickelt.
description: The synthesis of new liquid crystals of bent molecular shape, the investigation of their mesophase behaviour, and a review of columnar mesophases of bent-core mesogens are the subject of this work. The synthesized compounds include a wide variety of liquid crystals, beginning from more or less conventional dimers of calamitic mesogens (e.g. substituted bisbenzoates of α,ω-alkandiols) up to bent-core mesogens (e.g. substituted bisbenzoates of 4-hydroxy-benzylalkohols). The substances show a complex, interesting and often unconventional mesophase behaviour. The following highlights are of particular importance: homologous series of dimers exhibiting alternating phase sequences of conventional smectic or banana phases; unconventional phase sequences; the partition of the B1 phase into three different columnar mesophases of bent-core mesogens. For the first time layer groups are used to develop models of liquid crystalline phases.
The modified Becke-Johnson potential analyzed
Creators: name: Camargo, J. A.
name: Baquero, R.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Other Condensed Matter (cond-mat.other)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Recently in the Wien2k code, the modified Becke-Johnson potential (mBJLDA) was implemented. As the authors [{\em Phys.Rev.Lett.} 102, 226401 (2009)] point, this potential reproduces the band gap of semiconductors with improved accuracy. In this paper we present our analysis of this potential in two directions. First, we checked whether this potential reproduces the band structure for metals, an analysis that lacked in the literature. We calculated the band gap of a group of semiconductors. We observed that the Linear Density Approximation (LDA) give rise to a shorter lattice constant as compared to experiment. The Generalized Gradient Approximation behaves oppositely. Using the average, $a_{Avg}$, in the mBJLDA potential, we obtained a closer to experiment value for the gap. We conclude that the new mBJLDA potential represent an important improvement as compared to the results from the previous version of the Wien2k code. Also the mBJLDA potential can be a very useful tool for the theoretical study of complex systems containing semiconductor compounds such as surfaces, superlattices and interfaces.
La green economy in Emilia-Romagna: la sostenibilità come fattore di sviluppo
Creators: name: Garibaldo, Francesco
name: Orlando, Nicole
name: Parodi, Gianluca
name: Tassinari, Giorgio
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2012
Subjects: SECS-P/02 Politica economica
SECS-P/07 Economia aziendale
SECS-S/03 Statistica economica

description: The aim of this work is to analyze the development of Green Economy in the Emilia-Romagna Region. Sustainability and efficiency are seen as springs of development to be pushed overall in a period of global economic crisis. Starting from the distinction of Green Production and Green Products, the authors have investigated the evolution of the sector in the last years, in particular analyzing the number of enterprises and products with environmental certifications and their economic performance. A special focus have been made regarding the production of Renewable Energy Sources and the EU objectives. Furthermore it has been explored the Agri-food sector, underlining its relationship with the environment and the threats given by Climate Change, and on the other side the opportunities linked to agro-energies and organic productions. The authors have made some on field interviews to operators and firms of different sector in order to better understand their perspective regarding Green Economy markets. Additionally to underline some strategic guidelines to be followed by governments to better implement structural changes to raise efficiency and to further green the economical production.
Asymptotic Density of Eigenvalue Clusters for the Perturbed Landau Hamiltonian
Creators: name: Pushnitski, Alexander
name: Raikov, Georgi
name: Villegas-Blas, Carlos
Publisher: name: arXiv
Year: 2011
Subjects: subject: Spectral Theory (math.SP)
subject: FOS: Mathematics
subject: 35P20, 35J10, 47G30, 81Q10

description: We consider the Landau Hamiltonian (i.e. the 2D Schroedinger operator with constant magnetic field) perturbed by an electric potential V which decays sufficiently fast at infinity. The spectrum of the perturbed Hamiltonian consists of clusters of eigenvalues which accumulate to the Landau levels. Applying a suitable version of the anti-Wick quantization, we investigate the asymptotic distribution of the eigenvalues within a given cluster as the number of the cluster tends to infinity. We obtain an explicit description of the asymptotic density of the eigenvalues in terms of the Radon transform of the perturbation potential V.
description: 30 pages. The explicit dependence on B and V in Theorem 1.6 (i) - (ii) indicated. Typos corrected. To appear in Communications in Mathematical Physics
EXAMINING HIBERNATION IN THE BIG BROWN BAT THROUGH DNA METHYLATION
Creators: name: Sullivan, Isabel
Publisher: name: Digital Repository at the University of Maryland
Year: 2021
Subjects: subject: Biology
subject: Bioinformatics
subject: FOS: Computer and information sciences
subject: Genetics
subject: FOS: Biological sciences
subject: Cumulative hibernation
subject: DNA methylation
subject: Hibernation
subject: The big brown bat

description: Hibernation allows individuals to conserve energy during seasonal low temperatures. As the physiological regulation of hibernation is inadequately understood, I examine hibernation using DNA methylation (DNAm). DNAm is the addition of a methyl group to cytosine at cytosine guanine dinucleotide (CpG) sites in the genome. DNAm in promoters can repress gene expression and be influenced by histone modifications. Using the big brown bat, Eptesicus fuscus, I examined how hibernation influences DNAm, independent of age, through comparing DNAm from bats that differed in hibernation history and comparing DNAm from the same individual between hibernating and active seasons. Both comparisons found evidence of differential enrichment of genes near significant CpG sites resulting from hibernation. The latter analysis found evidence consistent with a histone mark, associated with active transcription, is likely enriched in hibernating bats. These results suggest that DNAm and histone modifications associated with transcription factor binding regulate gene expression during hibernation.
Investigating Barriers and Predictors to Mental Health Service Utilization Among African American College Students
Creators: name: Wallace, Rayna
Publisher: name: Digital Repository at the University of Maryland
Year: 2021
Subjects: subject: Psychology
subject: FOS: Psychology

description: Many young adult college students experience high levels of stress and symptoms of mental illness while matriculating through school. Despite experiencing these adverse symptoms, few students seek out mental health services. Black students, in particular, are even less likely to seek out services compared to other racial and ethnic groups, and most studies have not assessed mental health service use among students attending a historically Black college or university (HBCU). This study aimed to assess barriers and predictors to mental health service use among HBCU students by holding a sixty minute focus group with participants. Results showed that HBCU students reported unique barriers and predictors to mental health service use with some matching what has been found in previous studies. Future studies should focus on gathering perspectives on mental health service use among different groups within the Black community that attend HBCUs.
Dalechampia convolvuloides Lam.
Creators: name: Araújo, Diogo
name: Alves, Marccus
Publisher: name: Zenodo
Year: 2010
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Malpighiales
Euphorbiaceae
Dalechampia
Dalechampia convolvuloides

description: 43. Dalechampia convolvuloides Lam. (Fig. 4E)
Brazil (Pernambuco, Sergipe, Rio de Janeiro). Atlantic forest. (Govaerts et al. 2000).
Selected Vouchers:—Piedade, Araújo et al. 379 (IPA, UFP); Macacos, Araújo et al. 294 (UFP); Zambana, Araújo et al. 347 (UFP).
description: Published as part of Araújo, Diogo & Alves, Marccus, 2010, Climbing plants of a fragmented area of lowland Atlantic Forest, Igarassu, Pernambuco (northeastern Brazil), pp. 1-24 in Phytotaxa 8 on page 18, DOI: 10.11646/phytotaxa.8.1.1, http://zenodo.org/record/4893863
Multifaceted information fusion : a decision support system for online monitoring in water distribution networks
Creators: name: Aminravan, Farzad
Publisher: name: University of British Columbia
Year: 2014

description: Online monitoring of distributed infrastructure systems such as water distribution networks is necessary to assure the safety and security of our modern societies. Often various patterns of uncertainty and information deficiency about spatial relationships and interdependence of distributed observations impede effective monitoring of distributed systems. As a result, spatiotemporal monitoring of complex infrastructure systems needs a unified framework to deal with various sources of information deficiency induced by subjective and objective information. This thesis investigates the problem of combining deficient spatiotemporal evidential sources for the purpose of quality monitoring and relative risk analysis. Spatiotemporal monitoring of water distribution networks based on surrogate water quality parameters is formulated in terms of integrated quality monitoring and relative risk analysis. Distributed quality assessment is performed through an extended fuzzy evidential reasoning scheme that employs the fuzzy interval grade and interval-valued belief degree (IGIB). The former facilitates modeling of uncertainties in terms of local ignorance associated with expert knowledge whereas the latter allows for handling the lack of information on belief degree assignments. Local multi-sensor fusion for relative risk analysis is based on a proposed extended fuzzy belief rule-based (BRB) system that employs the IGIB structure in its rule consequent. The proposed extended BRB system can handle nonlinear input-output relationships and inconsistencies in the inference process as well as epistemic uncertainties including ambiguity, vagueness, and interval uncertainty in the knowledge base. A multi-level information fusion framework capable of modeling interdependency and uncertainty is proposed for distributed online monitoring. The multi-level information fusion framework encompasses a networked fuzzy belief rule based (NF-BRB) system and a high-level BRB system. The NF-BRB system is employed for knowledge elicitation from the expert about locally perceived relative risk associated with drinking water, while the high-level BRB system with hybrid learning enhances the event detection performance. Extensive simulated water quality degradation events, originated from real dataset of the Quebec City’s main water distribution network and contamination tests in a pilot distribution facility, were exploited to validate the efficacy of the proposed framework for integrated water quality monitoring and relative risk analysis.
Ricostruzione della balista imperiale Romana -
un piacevole viaggio fra fantasia, storia, tecnologia e …
progettazione.
Creators: name: Molari, Pier Gabriele
name: Angelini, Guido
name: Canzler, Andreas
name: Sannipoli, Pietro
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2012
Subjects: ING-IND/14 Progettazione meccanica e costruzione di macchine

description: Nel secondo anno, da quando è stato acceso il “Laboratorio di storia dell’ingegneria meccanica”, si prosegue il cammino iniziato nel Corso precedente, che ha portato alla ricostruzione virtuale della balista descritta da Vitruvio e ci si impegna in una ricostruzione della macchina da lancio dei romani dell’età imperiale.
Si è così coinvolti in un piacevole viaggio, a cavallo fra fantasia interpretativa e costruttiva, ricerca storica e realtà tecnologica che, definita la “mission” della macchina, fa comprendere l’essenza del progetto.
L’analisi accurata delle immagini presenti sulla colonna Traiana fornisce un terreno di discussione e di elaborazione di varie soluzioni costruttive che vengono esaminate e confrontate scoprendo anche inedite interpretazioni delle scene rappresentate. Il lavoro termina con lo “studio” della macchina, i disegni dei particolari e del complessivo. 
In attesa di una ri-costruzione reale della macchina se ne esegue una virtuale con tanto di lancio .. simulato.
Dalechampia pernambucensis Baill.
Creators: name: Araújo, Diogo
name: Alves, Marccus
Publisher: name: Zenodo
Year: 2010
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Malpighiales
Euphorbiaceae
Dalechampia
Dalechampia pernambucensis

description: 44. Dalechampia pernambucensis Baill. (Fig. 4G)
Brazil (Ceará, Pernambuco) (Govaerts et al. 2000).
Selected Voucher:—Pezinho, Alves-Araújo et al. 271 (UFP).
description: Published as part of Araújo, Diogo & Alves, Marccus, 2010, Climbing plants of a fragmented area of lowland Atlantic Forest, Igarassu, Pernambuco (northeastern Brazil), pp. 1-24 in Phytotaxa 8 on page 18, DOI: 10.11646/phytotaxa.8.1.1, http://zenodo.org/record/4893863
Action Research / La recherche-action / La ricerca-intervento
Creators: name: Albano, Roberto
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2012
Subjects: M-PSI/01 Psicologia generale
M-PSI/06 Psicologia del lavoro e delle organizzazioni
SECS-P/10 Organizzazione aziendale
SPS/07 Sociologia generale
SPS/09 Sociologia dei processi economici e del lavoro

description: After an historical overview on the reflection about the relationship between researcher and “research object” in action research, the paper proposes a typology, based on the different epistemological views, to interpret the different methodological proposals.
The Coalgebraic Structure of Cell Complexes
Creators: name: Athorne, Thomas
Publisher: name: arXiv
Year: 2012
Subjects: subject: Category Theory (math.CT)
subject: Algebraic Topology (math.AT)
subject: FOS: Mathematics
subject: 18A32, 55U35

description: The relative cell complexes with respect to a generating set of cofibrations are an important class of morphisms in any model structure. In the particular case of the standard (algebraic) model structure on $\textbf{Top}$, we give a new expression of these morphisms by defining a category of relative cell complexes, which has a forgetful functor to the arrow category. This allows us to prove a conjecture of Richard Garner: considering the algebraic weak factorisation system given in that algebraic model structure between cofibrations and trivial fibrations, we show that the category of relative cell complexes is equivalent to the category of coalgebras.
description: 26 pages
Mechanical and durability properties of recycled and repeated recycled coarse aggregate concrete
Creators: name: Huda, Sumaiya Binte
Publisher: name: University of British Columbia
Year: 2014

description: Disposal and treatment of construction and demolition (C&D) wastes are often costly and hazardous to the environment. Their recycling could lead to a greener solution to the environmental conservation and pave the way towards sustainability. This study utilizes demolished concrete as coarse aggregate often termed as recycled coarse aggregate (RCA) for producing industry quality concrete. Large scale recycling can substantially reduce the consumption of natural aggregate and help preserve the environment. However, in near future, it can raise new challenges. The use of “repeated recycled coarse aggregate” in concrete production can be a viable solution to the growing problem regarding the C&D waste disposal. During the development of new generation product like recycled and repeated recycled coarse aggregate concrete, it is essential to investigate the fresh, hardened, and durability properties of concrete to promote and escalate its application in the construction industry. This research investigates the fresh, mechanical, and durability properties of 25 MPa recycled aggregate concrete (RAC) made with different RCA replacement levels. Durability performance of 25 MPa RAC was evaluated in terms of sulphate attack and cyclic wetting and drying along with chloride exposure. Chloride propagation was evaluated after 1, 4, 9, 16, 28, 90, and 120 cycles. This study reveals that the performance of RAC is decreasing with increasing RCA replacement levels but their overall performance is comparable to natural aggregate concrete (NAC). Three different generations of repeated recycled coarse aggregate concrete were produced using 100% RCA as a replacement of natural coarse aggregate. Similar mix design was used for producing 32 MPa concrete. Along with this, their durability performance was examined under three different exposure conditions namely, freeze-thaw, sulphate, and chloride exposure. It was found that the compressive strength of different generations of repeated recycled concrete was lower than the control concrete. However, all of the mixes exceeded the target strength at 120 days. The durability performance of the different generations of repeated recycled coarse aggregate concrete was negatively affected by using different generations of such aggregates but still these findings will add a new achievement towards sustainable world.
Work analysis for prevention according to the "Organization and Well-being" Program / L’analyse du travail pour la prévention selon le Programme « Organization and Well-being » / L’analisi del lavoro per la prevenzione secondo il Programma “Organization and Well-being”
Creators: name: Maggi, Bruno
name: Rulli, Giovanni
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2012
Subjects: IUS/07 Diritto del lavoro
M-PSI/06 Psicologia del lavoro e delle organizzazioni
MED/44 Medicina del lavoro
SPS/09 Sociologia dei processi economici e del lavoro

description: A case study concerns a public health service where work analysis, oriented towards primary prevention, is repeatedly performed over a long period of time. The goal is to present the approach of the Interdisciplinary Research Program “Organization and Well-Being”, that has been active for three decades. This approach is based on the Organizational Action Theory and concerns the analysis of work processes’ regulation. It takes care of the well-being of people at work and implies that the analysis, carried out by the workers themselves, coincides with the transformation of the work processes. The debate is open about the possible connections between this approach and the ones that share the same epistemological premises.
L’imposta sul valore aggiunto: regime ordinario e regime del margine a confronto. Il caso del mercato dell’arte
Creators: name: Candela, Guido
name: Randon, Emanuela
name: Scorcu, Antonello E.
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2012
Subjects: SECS-P/02 Politica economica
SECS-P/03 Scienza delle finanze

description: In letteratura, il confronto tra i metodi di calcolo dell’imposta sul valore aggiunto (regime
ordinario e regime del margine) è limitato: si riduce al risultato di equivalenza ottenuto con aliquote
identiche e uniformi nelle diverse fasi della produzione e dello scambio. In questo lavoro
proponiamo un’analisi comparativa generale per stabilire la desiderabilità di un metodo rispetto
all’altro in relazione alla struttura delle aliquote, alla tipologia dei soggetti coinvolti, alle politiche
di commercializzazione. I risultati sono applicati per valutare il meccanismo di formazione dei
prezzi nel mercato dell’arte. Si propongono degli interventi di riforma per rendere il regime fiscale
neutrale e trasparente, incentivando scambi e investimenti.
The Arduous Journey to Black-Hole Formation in Potential Gamma-Ray Burst Progenitors
Creators: name: Dessart, Luc
name: O'Connor, Evan
name: Ott, Christian D.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present a quantitative study on the properties at death of fast-rotating massive stars evolved at low-metallicity, objects that are proposed as likely progenitors of long-duration gamma-ray bursts (LGRBs). We perform 1D+rotation stellar-collapse simulations on the progenitor models of Woosley & Heger (2006) and critically assess their potential for the formation of a black hole and a Keplerian disk (namely a collapsar) or a proto-magnetar. We note that theoretical uncertainties in the treatment of magnetic fields and the approximate handling of rotation compromises the accuracy of stellar-evolution models. We find that only the fastest rotating progenitors achieve sufficient compactness for black-hole formation while the bulk of models possess a core density structure typical of garden-variety core-collapse supernova (SN) progenitors evolved without rotation and at solar metallicity. Of the models that do have sufficient compactness for black-hole formation, most of them also retain a large amount of angular momentum in the core, making them prone to a magneto-rotational explosion, therefore preferentially leaving behind a proto-magnetar. A large progenitor angular-momentum budget is often the sole criterion invoked in the community today to assess the suitability for producing a collapsar. This simplification ignores equally important considerations such as the core compactness, which conditions black-hole formation, the core angular momentum, which may foster a magneto-rotational explosion preventing black-hole formation, or the metallicity and the residual envelope mass which must be compatible with inferences from observed LGRB/SNe. Our study suggests that black-hole formation is non trivial, that there is room for accommodating both collapsars and proto-magnetars as LGRB progenitors, although proto-magnetars seem much more easily produced by current stellar-evolutionary models.
description: 10 emulateapj pages, 3 figures, 1 table, matches published version
Reconstructing the shape of the correlation function
Creators: name: Huffenberger, K. M.
name: Galeazzi, M.
name: Ursino, E.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: We develop an estimator for the correlation function which, in the ensemble average, returns the shape of the correlation function, even for signals that have significant correlations on the scale of the survey region. Our estimator is general and works in any number of dimensions. We develop versions of the estimator for both diffuse and discrete signals. As an application, we examine Monte Carlo simulations of X-ray background measurements. These include a realistic, spatially-inhomogeneous population of spurious detector events. We discuss applying the estimator to the averaging of correlation functions evaluated on several small fields, and to other cosmological applications.
description: 10 pages, 5 figures, submitted to ApJS. Methods and results unchanged but text is expanded and significantly reordered in response to referee
EVALUATION OF IMPACT OF NOVEL BARRIER COATINGS ON FLAMMABILITY OF A STRUCTURAL AEROSPACE COMPOSITE THROUGH EXPERIMENTS AND MODELING
Creators: name: Crofton, Lucas
Publisher: name: Digital Repository at the University of Maryland
Year: 2021
Subjects: subject: Materials Science
subject: Engineering
subject: Barrier Coatings
subject: Composite
subject: Modeling

description: Composites have become a integral part of the structure of airplanes, and their use within aircraft continues to grow as composites continue to improve. While polymer composites are an improvement in many facets to traditional airspace materials, their flammability is something called into question. The work performed for this study was to create a pyrolysis model for a particular aerospace composite, IM7 graphite fiber with Cytec 5250-4 Bismaleimide matrix (BMI), and three innovative composite barrier coatings that could be applied to the BMI to potentially improve its performance in fire scenarios. The composites were all tested individually, in a series of milligram-scale tests, and the test results were inversely analyzed to determine stoichiometry, chemical kinetics, and thermodynamics of their thermal decomposition and combustion. Gram-scale experiments using the Controlled Atmosphere Pyrolysis Apparatus II (CAPA II) were performed on the BMI by itself and then again with one of each of the composite barrier coatings applied in a defined thickness. This data were inversely analyzed to define the thermal conductivity of the sample and resolve it’s emissivity. It was found after fully defining a pyrolysis model for each composite material that the composite barrier coatings did not provide any benefit to the base composite BMI, and only added more fuel load which in turn contributed to a increase in heat release rate when computational simulations were run to mimic a airplane fuel fire.
Strukturuntersuchungen zum Einbau von Fremdionen und nanoskaligen Silberteilchen in Silikatgläser mit Hilfe der Röntgenabsorptionsspektroskopie
Creators: name: Brunsch, Sven
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2000
Subjects: Elektronische Publikation
Zsfassung in engl. Sprache

description: Die Röntgenabsorptionsspektroskopie ermöglicht die Analyse der atomaren Struktur von Kationen-Umgebungen in ionenausgetauschten Gläsern. EXAFS-Experimente zeigten Relaxationen der Glasmatrix nach dem Einbau von Silberionen unterhalb von TG. Im Gegensatz dazu führte der Einbau von Ionen mit größeren Radien wie K und Rb unterhalb der Glastransformationstemperatur zu einem einfachen Platzwechsel. Eine Erhöhung der Austauschtemperatur hatte dann die Ausbildung von charakteristischen Umgebungen zur Folge. Die strukturellen Parameter von nanoskaligen Silberteilchen (2,5-6nm) in Silikatgläsern wurden mit Hilfe von temperaturabhängigen EXAFS-Untersuchungen an der Ag K-Kante bestimmt. Die Gitterkonstante der Silberteilchen zeigte eine untypische Gitterdilatation als Folge des Glasabkühlungsprozesses. Der Debye-Waller-Faktor und der thermische Ausdehnungskoeffizient der Teilchen vergrößerte sich im Vergleich mit dem kompakten Silber. Die Experimente verdeutlichten den Einfluß der Glasmatrix auf die Struktur der eingebauten Silberteilchen.
description: X-ray absorption spectroscopy makes it possible to identify the local atomic structure around cations in ion-exchanged glasses. EXAFS experiments demonstrate that the substitution of sodium by silver leads to local rearrangements below TG. In contrary to that the incorporation of ions with increased ionic radii as K or Rb leads to a simple replacement of cations at low temperatures. Increasing the exchange temperature, the introduced cations form their own environment that is, however, determined by the soda-lime glass network. The structural parameters of nanoscale silver particles embedded in a silicate glass matrix have been determined by temperature-dependent EXAFS spectroscopy at the Ag K edge for particles between 2.5 and 6 nm. The lattice parameter of the Ag particles showed an unusual dilatation of the silver structure that is a result of the glass cooling process. Furthermore, an increase was found of the Debye-Waller factors as well as of the thermal expansion coefficient compared with bulk Ag material. The experiments demonstrate that the behaviour of metal particles incorporated into a glass matrix reflects the influence of the surrounding matrix.
GaAs thin films grown by LPE under influence of Yb
impurity
Creators: name: Zayachuk, Dmytro
name: Strukhlyak, Natalia
name: Krukovsky, Semen
name: Goovaerts, Etienne
name: Polyhach, Yevhen
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2004
Subjects: ING-INF/01 Elettronica

description: A comprehensive study of the
photoluminescence spectra and the electrophysical
parameters have been performed on GaAs epitaxial layers
grown by the low temperature liquid phase epitaxy (LPE)
method from solution-melts doped with Yb impurity. The
characteristic variations of the relative intensity of the
components of the PL spectra, electroconductivity,
concentration and mobility of the free charge carriers in the
grown layers where established as a function of the
concentration of the Yb impurity in the initial solutionmelts.
A possible mechanism of the influence of the Yb
impurity on the native defects and background impurities in
the epitaxially grown GaAs is proposed.
Going Beyond The Game: Evolving the City through an Esports Venue
Creators: name: Choi, Jefferson
Publisher: name: Digital Repository at the University of Maryland
Year: 2021
Subjects: subject: Architecture
subject: FOS: Civil engineering
subject: architecture
subject: architecture thesis
subject: digital experience design
subject: esports
subject: Tysons

description: This thesis aims to reimagine the traditional sports arena of the future that addresses the growing culture of competitive gaming, known as esports. Globally, the esports industry continues to grow as today’s fastest entertainment market; however, there are only a limited number of venues dedicated to the esports that fulfill the requirements of esports events. This thesis embeds advanced technology with the built environment to enrich a digital experience in Tysons, Virginia. Tysons is known as an outgrowth city of Washington, DC and continues to evolve to become a 24-hour urban center for living, working, and playing. However, the city is lacking the programmatic typologies at the pedestrian scale. Bringing an esports venue, titled the Tysons Reboot, would humanize the city by introducing a new cultural hub, heighten its prospective growth of a futuristic tech city, and evolve the city as a regional and international destination city.
Optimal image representations for mass
detection in digital mammography
Creators: name: Masotti, Matteo
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2005
Subjects: FIS/07 Fisica applicata (a beni culturali, ambientali, biologia e medicina)

description: This work addresses a two–class classification problem related to one of the leading
cause of death among women worldwide, namely breast cancer. The two
classes to separate are tumoral masses and normal breast tissue.
The proposed approach does not rely on any feature extraction step aimed at
finding few measurable quantities characterizing masses. On the contrary, the
mammographic regions of interest are passed to the classifier—a Support Vector
Machine (SVM)—in their raw form, for instance as vectors of gray–level values.
In this sense, the approach adopted is a featureless approach, since no feature is
extracted from the region of interest, but its image representation embodies itself
all the features to classify.
In order to find the optimal image representation, several ones are evaluated by
means of Receiver Operating Characteristic (ROC) curve analysis. Image representations
explored include pixel–based, wavelet–based, steer–based and ranklet–
based ones. In particular, results demonstrate that the best classification performances
are achieved by the ranklet–based image representation. Due to its good
results, its performances are further explored by applying SVM Recursive Feature
Elimination (SVM–RFE), namely recursively eliminating some of the less
discriminant ranklets coefficients according to the cost function of SVM. Experiments
show good classification performances even after a significant reduction of
the number of ranklet coefficients.
Finally, the ranklet–based and wavelet–based image representations are practically
applied to a real–time working Computer–Aided Detection (CAD) system
developed by our group for tumoral mass detection. The classification performances
achieved by the proposed algorithm are interesting, with a false–positive
rate of 0.5 marks per–image and 77% of cancers marked per–case.
Analisi wavelet multirisoluzione: dalla
teoria matematica ad una possibile
applicazione nell’ambito
dell’esperimento ALICE
Creators: name: Masotti, Matteo
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2001
Subjects: FIS/04 Fisica nucleare e subnucleare
FIS/01 Fisica sperimentale

description: L’analisi wavelet multirisoluzione e' una tecnica di analisi relativamente recente,
che sta subendo una crescente diffusione, sia nell’ambito della compressione
di segnali mono-dimensionali, che nell’ambito della compressione di segnali
bi-dimensionali.
Gli obiettivi del presente lavoro di tesi sono, lo sviluppo di un algoritmo
di compressione basato sull’analisi wavelet multirisoluzione, finalizzato alla
compressione dei dati provenienti dai rivelatori SDD (Silicon Drift Detectors),
appartenenti all’Inner Tracking System dell’esperimento ALICE (A Large Ion
Collider Experiment), la valutazione delle prestazioni di tale algoritmo, sia in
termini di predisposizione alla compressione dei dati, che in termini di errore
nella ricostruzione dei dati originali a partire da quelli compressi, e da ultimo, il
confronto diretto con le prestazioni ottenute mediante l’algoritmo attualmente
in uso, sviluppato presso l’Istituto Nazionale di Fisica Nucleare di Torino.
EVALUATING PERFORMANCE: CONVERGENCE ORDER, CONSISTENCY, AND STABILITY IN RECENTLY PROPOSED SCHEMES
Creators: name: Olufemi, A. Ogunleye
name: Temitope, O. Adekunle
Publisher: name: AMERICAN SERIAL
Year: 2024
Subjects: Mathematical modeling
Differential equations
Interdisciplinary applications
Analytical solutions
Problem-solving

description: Mathematical modeling serves as a vital tool for interpreting real-world scenarios through the lens of mathematical symbols and relationships, commonly applied across various disciplines including Sciences and Engineering. Through the development of models, researchers aim to gain insights into complex physical phenomena, often resulting in the formulation of differential equations containing derivatives of unknown functions. These equations, termed as Differential Equations, serve as foundational components in understanding phenomena spanning from physical sciences to fields as diverse as Economics, Medicine, Psychology, and Operation Research, extending even into domains like Biology and Anthropology. However, the quest for analytical solutions to these differential equations, stemming from real-life modeling endeavors, often presents formidable challenges. Many equations arising from such modeling efforts defy straightforward analytical solutions, necessitating the exploration of alternative methods for their resolution.

This abstract underscores the ubiquity of differential equations across numerous disciplines and emphasizes the significance of mathematical modeling in advancing understanding and problem-solving capabilities. It highlights the interdisciplinary nature of differential equations, transcending traditional boundaries and finding applications in diverse fields. Moreover, it acknowledges the inherent complexity associated with obtaining analytical solutions to these equations, paving the way for the exploration of alternative solution strategies
Chern-Simons Theory with Vector Fermion Matter
Creators: name: Giombi, Simone
name: Minwalla, Shiraz
name: Prakash, Shiroman
name: Trivedi, Sandip P.
name: Wadia, Spenta R.
name: Yin, Xi
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We study three dimensional conformal field theories described by U(N) Chern-Simons theory at level k coupled to massless fermions in the fundamental representation. By solving a Schwinger-Dyson equation in lightcone gauge, we compute the exact planar free energy of the theory at finite temperature on R^2 as a function of the 't Hooft coupling lambda=N/k. Employing a dimensional reduction regularization scheme, we find that the free energy vanishes at |lambda|=1; the conformal theory does not exist for |lambda|>1. We analyze the operator spectrum via the anomalous conservation relation for higher spin currents, and in particular show that the higher spin currents do not develop anomalous dimensions at leading order in 1/N. We present an integral equation whose solution in principle determines all correlators of these currents at leading order in 1/N and present explicit perturbative results for all three point functions up to two loops. We also discuss a lightcone Hamiltonian formulation of this theory where a W-infinity algebra arises. The maximally supersymmetric version of our theory is ABJ model with one gauge group taken to be U(1), demonstrating that a pure higher spin gauge theory arises as a limit of string theory.
description: 122 pages, 59 figures. v2: minor corrections, references added
Twisted K-theory and obstructions against positive scalar curvature metrics
Creators: name: Pennig, Ulrich
Publisher: name: arXiv
Year: 2011
Subjects: subject: Geometric Topology (math.GT)
subject: K-Theory and Homology (math.KT)
subject: FOS: Mathematics
subject: 19L50

description: We decompose the twisted index obstruction $θ(M)$ against positive scalar curvature metrics for oriented manifolds with spin universal cover into a pairing of a twisted $K$-homology with a twisted $K$-theory class and prove that $θ(M)$ does not vanish if $M$ is an orientable enlargeable manifold with spin universal cover.
description: 21 pages (drastically streamlined with focus on the proof of the non-vanishing result)
Die Bedeutung von Gerechtigkeitserfahrungen und familialer Sozialisation für die Entwicklung des Gerechte-Welt-Glaubens bei Jugendlichen - ein Vergleich zwischen Jugendlichen mit alleinerziehenden Müttern und Jugendlichen in Kernfamilien
Creators: name: Kahileh, Reem
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2010
Subjects: subject: Online-Publikation
subject: Hochschulschrift
subject: 303.323
subject: 370

description: In einer Längsschnittstudie wurde der Frage nachgegangen, welche Prädiktoren den Gerechte-Welt-Glauben (GWG) erklären können. Die Ergebnisse zeigten, dass Jugendliche mit alleinerziehenden Müttern und aus Kernfamilien, die sich von ihren Müttern persönlich gerecht behandelt fühlten und in einem positiven emotionalen Familienklima aufgewachsen waren, einen stärkeren persönlichen GWG hatten. Inkonsistenz, eine Dimension des emotionalen Familienklimas, trug zur Erklärung des persönlichen GWG bei. Der persönliche GWG Jugendlicher nahm um so eher ab, je mehr Mütter in ihrer Erziehung zur Inkonsistenz neigten; dies galt nur bei Jugendlichen mit alleinerziehenden Müttern. Tadel, eine Dimension der Regelorientierung, trug zur Erklärung des allgemeinen GWG bei. Der allgemeine GWG nahm um so eher zu, je stärker die Mütter beider Familienstrukturen zum Tadel neigten. Weder die familialen Ressourcen noch die Bewältigungsstrategien konnten den persönlichen GWG erklären.
Additional file 10 of Identification and validation of methylated differentially expressed miRNAs and immune infiltrate profile in EBV-associated gastric cancer
Creators: name: Zhu, Mansheng
name: Liang, Qixiang
name: Chen, Tao
name: Kong, Qian
name: Ye, Gengtai
name: Yu, Shitong
name: Li, Xunjun
name: He, Qinglie
name: Liu, Hao
name: Hu, Yanfeng
name: Yu, Jiang
name: Li, Guoxin
Publisher: name: figshare
Year: 2021
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Immunology
subject: FOS: Clinical medicine

description: Additional file 10: Figure S22. Expression changes in miR-129-2-3p in the GC cell lines by the treatment of demethylator 5-Aza-CdR.
Parametrix approximations for option prices
Creators: name: Corielli, Francesco
name: Pascucci, Andrea
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2005
Subjects: MAT/05 Analisi matematica
SECS-S/06 Metodi matematici dell'economia e delle scienze attuariali e finanziarie

description: We propose the use of a classical tool in PDE theory, the
parametrix method, to build approximate solutions to generic
parabolic models for pricing and hedging contingent claims. We
obtain an expansion for the price of an option using as starting
point the classical Black&Scholes formula. The approximation can
be truncated to any number of terms and easily computable error
measures are available.
Performance Analysis of Transimpedance Amplifiers
in Various Technologies
Creators: name: Nosal, Zbigniew M.
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2004
Subjects: ING-INF/01 Elettronica

description: The paper deals with transimpedance
amplifiers (TIA) for optical telecommunication systems in
the 10 to 43 Gb/s speed range. The limits of performance in
HBT, pHEMT and CMOS technologies are investigated.
Detailed noise analysis of the photodiode-TIA cluster is
carried out and the factors limiting TIA sensitivity are
determined. It is shown that with existent technologies the
GaAs pHEMT provides lowest TIA noise.
"I'm not alone in this": Co-managing stigmatized chronic health conditions
Creators: name: Chopra, Shaan
Publisher: name: Digital Repository at the University of Maryland
Year: 2021
Subjects: subject: Information science
subject: Design
subject: Health care management
subject: Chronic Health Conditions
subject: Co-management
subject: Collaboration
subject: Coordination
subject: Health Tracking
subject: Stigma

description: People living with chronic health conditions often have to take care of multiple medical, logistical, and everyday tasks, including monitoring symptoms, following treatments, going for appointments, as well as managing work, familial, and social obligations. Unlike shorter illnesses, chronic health conditions are lifelong, often requiring constant monitoring and management, and as such, it is challenging for the individual to manage their daily life alongside their health, all by themselves. Further, people often experience stigma around their self-image and abilities due to their chronic conditions, further making acceptance of and life with the condition challenging. In this work, I look into how people living with chronic health conditions informally share the responsibility of managing their health and affected daily life activities with people in their close circle. I conducted in-depth interviews with 16 people living with chronic health conditions who collaboratively manage (or "co-manage") at least some aspects of their health with people in their close circles. I report on their (a) current co-management practices, including their use of technology to facilitate the same, and (b) experiences with stigma and its impacts on disclosure, support-seeking, and communication around their health, in different environments. I found that people appropriated different tools and technologies to monitor, coordinate, and collaborate with their co-managers. The nature of their relationship with co-managers and the physical or virtual space within which they co-managed were also key in shaping their current practices. I further identified avenues for designing technology to support people's diverse co-management needs, such as collaborative tracking, shared-space coordination, and navigating stigma during disclosure and support-seeking, contributing to HCI literature on designing for stigmatized health topics, chronic health management, and collaborative care.
Lunar system constraints on the modified theories of gravity
Creators: name: Exirifard, Qasem
Publisher: name: arXiv
Year: 2011
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The MOND paradigm to the missing mass problem requires introducing a functional that is to be identified through observations and experiments. We consider AQUAL theory as a realization of the MOND. We show that the accurate value of the Earth GM measured by the Lunar Laser Ranging and that by various artificial Earth satellites, including the accurate tracking of the LAGEOS satellites, constrain this functional such that some of the chosen/proposed functional are refuted.
Stimulated Neutrino Transformation with Sinusoidal Density Profiles
Creators: name: Kneller, James P.
name: McLaughlin, Gail C.
name: Patton, Kelly M.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Large amplitude oscillations between the states of a quantum system can be stimulated by sinusoidal external potentials with frequencies that are similar to the energy level splitting of the states or a fraction thereof. Situations when the applied frequency is equal to an integer fraction of the energy level splittings are known as parametric resonances. We investigate this effect for neutrinos both analytically and numerically for the case of arbitrary numbers of neutrino flavors. We look for environments where the effect may be observed and find that supernova are the one realistic possibility due to the necessity of both large densities and large amplitude fluctuations. The comparison of numerical and analytic results of neutrino propagation through a model supernova reveals it is possible to predict the locations and strengths of the stimulated transitions that occur.
description: 14 pages, 6 figures
SiGe:C HBT technology for advanced BiCMOS
processes.
Creators: name: Magnee, P. H. C.
name: Hurkx, G. A. M.
name: Agarwal, P.
name: Van Noort, W. D.
name: Donkers, J. J. T. M.
name: Melai, J.
name: Aksen, E.
name: Vanhoucke, T.
name: Vijayaraghavan, M. N.
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2004
Subjects: ING-INF/01 Elettronica

description: In this paper we discuss the present status of
SiGe:C heterojunction bipolar transistors (HBTs), together with
some Figures-of-Merit (FOMs) and their relation to technology.
We also discuss new innovative solutions to the relatively low
breakdown voltage and high-frequency substrate losses of Si
technologies, when compared to III-V based technologies.
Compact Modelling of SiGe HBTs
Creators: name: Mijalkovic, S.
name: Burghartz, J.N.
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2004
Subjects: ING-INF/01 Elettronica

description: The main goal of this paper is to outline principle
ideas and conceptual differences in modern compact modelling
procedures for SiGe HBTs. Instead of going into description of
particular model structures, the principle approaches to SiGe
HBT compact modelling have been analyzed in terms of main
transfer current and corresponding charges. Special emphasis
is put on the modelling of the Early effect, quasi-neutral base
recombination, high-injection and temperature effects.