cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Unique nature of the lowest Landau level in finite graphene samples with zigzag edges: Dirac electrons with mixed bulk-edge character
Creators: name: Romanovsky, Igor
name: Yannouleas, Constantine
name: Landman, Uzi
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Nuclear Theory (nucl-th)
subject: Atomic and Molecular Clusters (physics.atm-clus)
subject: FOS: Physical sciences

description: Dirac electrons in finite graphene samples with zigzag edges under high magnetic fields (in the regime of Landau-level formation) are investigated with regard to their bulk-type and edge-type character. We employ tight-binding calculations on finite graphene flakes (with various shapes) to determine the sublattice components of the electron density in conjunction with analytic expressions (via the parabolic cylinder functions) of the relativistic-electron spinors that solve the continuous Dirac-Weyl equation for a semi-infinite graphene plane. Away from the sample edge, the higher Landau levels are found to comprise exclusively electrons of bulk-type character (for both sublattices); near the sample edge, these electrons are described by edge-type states similar to those familiar from the theory of the integer quantum Hall effect for nonrelativistic electrons. In contrast, the lowest (zero) Landau level contains relativistic Dirac electrons of a mixed bulk-edge character without an analog in the nonrelativistic case. It is shown that such mixed bulk-edge states maintain also in the case of a square flake with combined zigzag and armchair edges. Implications for the many-body correlated-electron behavior (relating to the fractional quantum Hall effect) in finite graphene samples are discussed.
description: Physical Review B, in press. Revtex4-1. 12 pages with 14 figures. For related papers, see http://www.prism.gatech.edu/~ph274cy/
Towards a Value Sensitive Design Framework for Attaining Meaningful Human Control over Autonomous Weapons Systems
Creators: name: UMBRELLO, STEVEN
Publisher: name: Universit� degli studi di Genova
Year: 2021

description: The international debate on the ethics and legality of autonomous weapon systems (AWS) as well as the call for a ban are primarily focused on the nebulous concept of fully autonomous AWS. More specifically, on AWS that are capable of target selection and engagement without human supervision or control. This thesis argues that such a conception of autonomy is divorced both from military planning and decision-making operations as well as the design requirements that govern AWS engineering and subsequently the tracking and tracing of moral responsibility. To do this, this thesis marries two different levels of meaningful human control (MHC), termed levels of abstraction, to couple military operations with design ethics. In doing so, this thesis argues that the contentious notion of ?full? autonomy is not problematic under this two-tiered understanding of MHC. It proceeds to propose the value sensitive design (VSD) approach as a means for designing for MHC.
Leiomyosarcoma of the Right Iliacus Muscle
Creators: name: Noeman, Mohammed
Publisher: name: EURORAD
Year: 2014
Subjects: subject: Musculoskeletal bone
subject: Musculoskeletal soft tissue
subject: Musculoskeletal system
subject: CT
subject: Computer Applications-Detection, diagnosis
subject: Computer Applications-General
subject: Neoplasia

description: Clinical History Image Findings Discussion Find Diagnosis Differential Diagnosis
description: male, 70 years
description: Clinical History: The patient was admitted to the hospital because of worsening of the general condition with fever, night sweats and weight loss. A CT examination of thorax and abdomen showed a mass in the right iliacus muscle with multiple enlarged right inguinal lymph n... Final Diagnosis: Leiomyosarcoma of the right iliacus muscle with metastatic inguinal LN.
Nonparametric Reconstruction of the Dark Energy Equation of State
Creators: name: Holsclaw, Tracy
name: Alam, Ujjaini
name: Sanso, Bruno
name: Lee, Herbert
name: Heitmann, Katrin
name: Habib, Salman
name: Higdon, David
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: A basic aim of ongoing and upcoming cosmological surveys is to unravel the mystery of dark energy. In the absence of a compelling theory to test, a natural approach is to better characterize the properties of dark energy in search of clues that can lead to a more fundamental understanding. One way to view this characterization is the improved determination of the redshift-dependence of the dark energy equation of state parameter, w(z). To do this requires a robust and bias-free method for reconstructing w(z) from data that does not rely on restrictive expansion schemes or assumed functional forms for w(z). We present a new nonparametric reconstruction method that solves for w(z) as a statistical inverse problem, based on a Gaussian Process representation. This method reliably captures nontrivial behavior of w(z) and provides controlled error bounds. We demonstrate the power of the method on different sets of simulated supernova data; the approach can be easily extended to include diverse cosmological probes.
description: 16 pages, 11 figures, accepted for publication in Physical Review D
The lowest scattering state of one-dimensional Bose gas with attractive interactions
Creators: name: Hao, Yajiang
name: Guo, Hongli
name: Zhang, Yunbo
name: Chen, Shu
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We investigate the lowest scattering state of one-dimensional Bose gas with attractive interactions trapped in a hard wall trap. By solving the Bethe ansatz equation numerically we determine the full energy spectrum and the exact wave function for different attractive interaction parameters. The resultant density distribution, momentum distribution, reduced one body density matrix and two body correlation show that the decreased attractive interaction induces rich density profiles and specific correlation properties in the weakly attractive Bose gas.
description: 6 pages, 6figures
Neuromorphic Computing Systems for Tactile Sensing Perception
Creators: name: DABBOUS, ALI
Publisher: name: Universit� degli studi di Genova
Year: 2022

description: Touch sensing plays an important role in humans daily life. Tasks like exploring, grasping and manipulating objects deeply rely on it. As such, Robots and hand prosthesis endowed with the sense of touch can better and more easily manipulate objects, and physically collaborate with other agents. Towards this goal, information about touched objects and surfaces has to be inferred from raw data coming from the sensors. The orientation of edges, which is employed as a pre-processing stage in both artificial vision and touch, is a key indication for object discrimination. Inspired on the encoding of edges in human first-order tactile afferents, we developed a biologically inspired, spiking models architecture that mimics human tactile perception with computational primitives that are implementable on low-power subthreshold neuromorphic hardware. The network architecture uses three layers of Leaky Integrate and Fire neurons to distinguish different edge orientations of a bar pressed on the artificial skin of the iCub robot. We demonstrated that the network architecture can learn the appropriate connectivity through unsupervised spike-based learning, and that the number and spatial distribution of sensitive areas within receptive fields are important in edge orientation discrimination. The unconstrained and random structure of the connectivity among layers can produce unbalanced activity in the output neurons, which are driven by a variable amount of synaptic inputs. We explored two different mechanisms of synaptic normalization (weights normalization and homeostasis), defining how this can be useful during the learning phase and inference phase. The network is successfully able to discriminate between 35 orientations of 36 (0 degree to 180 degree with 5 degree step increments) with homeostasis and weights normalization mechanism.
Besides edge orientation discrimination, we modified the network architecture to be able to classify six different touch modalities (e.g. poke, press, grab, squeeze, push, and rolling a wheel). We demonstrated the ability of the network to learn appropriate connectivity patterns for the classification, achieving a total accuracy of 88.3 %. Furthermore, another application scenario on the tactile object shapes recognition has been considered because of its importance in robotic manipulation. We illustrated that the network architecture with 2 layers of spiking neurons was able to discriminate the tactile object shapes with accuracy 100 %, after integrating to it an array of 160 piezoresistive tactile sensors where the object shapes are applied.
Il blueprint nelle imprese turistiche: un’applicazione empirica nei processi di “on board sales” del settore crocieristico
Creators: name: Satta, Giovanni
name: Vitellaro, Francesco
name: Vottero, Bianca
Publisher: name: Department of Economics and Business Studies, University of Genoa
Year: 2021
Subjects: Management

description: The paper aims to unveil the business opportunities arising from the application of the theoretical constructs and managerial tools embedded in Business Process Management (BPM) and Business Process Reengineering (BPR) for managing and redesigning tourism services. The empirical background consists of business processes in the cruise domain. After introducing the main fundamental elements characterising the “blueprint” as a managerial tool, the paper empirically applies the aforementioned constructs to the On Board Sales (OBS) processes of a leading cruise company (i.e., Costa Crociere S.p.A.). The empirical results shed lights on how blueprint can support cruise companies with improving corporate performance by detecting and solving organizational/informative and managerial/operative criticalities. The benefits from the adoption of the blueprint in the sample cruise line are then generalised to those tourism services which are characterised by high levels of interaction with customers.
Ambient vibration tools supporting the model-based seismic assessment of existing buildings
Creators: name: SIVORI, DANIELE
Publisher: name: Universit� degli studi di Genova
Year: 2021

description: The technological advancements of the last decades are making dynamic monitoring an efficient and widespread resource to investigate the safety and health of engineering structures. In the wake of these developments, the thesis proposes methodological tools supporting the seismic assessment of existing buildings through the use of ambient vibration tests. In this context, the literature highlights considerable room to broaden the ongoing research, especially regarding masonry buildings. The recent earthquakes, once again, highlighted the significant vulnerability of this structural typology as an important part of our built heritage, remarking the importance of risk mitigation strategies for the territorial scale. The thesis builds upon a simplified methodology recently proposed in the literature, conceived to assess the post-seismic serviceability of strategic buildings based on their operational modal parameters. The original contributions of the work pursue the theoretical and numerical validation of its basic simplifying assumptions, in structural modelling ? such as the in-plane rigid behaving floor diaphragms ? and seismic analysis ? related to the nonlinear fundamental frequency variations induced by earthquakes. These strategies are commonly employed in the seismic assessment of existing buildings, but require further developments for masonry buildings. The novel proposal of the thesis takes advantage of ambient vibration data to establish direct and inverse mechanical problems in the frequency domain targeted at, first, qualitatively distinguishing between rigid and nonrigid behaving diaphragms and, second, quantitatively identifying their in-plane shear stiffness, mechanical feature playing a primary role in the seismic behaviour of masonry buildings. The application of these tools to real case studies points out their relevance in the updating and validation of structural models for seismic assessment purposes. In the light of these achievements, a model-based computational framework is proposed to develop frequency decay-damage control charts for masonry buildings, which exploit ambient vibration measurements for quick damage evaluations in post-earthquake scenarios. The results of the simulations, finally, highlight the generally conservative nature of ambient vibration-based simplified methodologies, confirming their suitability for the serviceability assessment of existing masonry buildings.
title: Ошибки и осложнения, возникающие на этапах ортодонтического лечениия пациентов с различными формами зубочелюстных аномалий
Creators: name: Спицына, Ольга
name: Трезубов, Владимир
Publisher: name: Новгородский государственный университет имени Ярослава Мудрого (НовГУ)
Year: 2020

description: Согласно данным литературы, нуждаемость населения России в стоматологической помощи достаточно высока. Параллельно с развитием ортодонтии растет интерес пациентов к ортодонтическому лечению. Возникновение ошибок и осложнений на любом из этапов ортодонтического лечения может сказаться на эффективности проведенного лечения. Целью данного исследования являлось изучение и систематизация ошибок и осложнений, возникающих на всех этапах ортодонтического лечения у больных с различными формами зубочелюстных аномалий.
Sub-luminous gamma-Ray pulsars
Creators: name: Romani, R. W.
name: Kerr, M.
name: Craig, H. A.
name: Johnston, S.
name: Cognard, I.
name: Smith, D. A.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Most pulsars observed by the Fermi LAT have gamma-ray luminosities scaling with spindown power Edot as L_gamma (Edot x 10^33 erg/s)^{1/2}. However, there exist one detection and several upper limits an order of magnitude or more fainter than this trend. We describe these `sub-luminous' gamma-ray pulsars, and discuss the case for this being an orientation effect. Of the 12 known young radio pulsars with Edot>10^34 erg/s and d<2kpc several are substantially sub-luminous. The limited available geometrical constraints favor aligned geometries for these pulsars, although no one case for alignment is compelling. In this scenario GeV emission detected from such sub-luminous pulsars can be due to a lower altitude, lower-power accelerator gap.
description: 9 pages, 4 figures; accepted to the Astrophysical Journal
Milton Friedman e la buona causa (purpose) dell’impresa
Creators: name: Donna, Giorgio
Publisher: name: Department of Economics and Business Studies, University of Genoa
Year: 2021
Subjects: Accounting and Business Adm.

description: Il riemergere ricorrente del tema dei fini dell’impresa vede oggi suggerire nuove proposte (il purpose, la buona causa) ma ha anche riaperto il dibattito sulle tesi enunciate 50 anni fa da Milton Friedman. Rispetto a queste tesi più che schierarsi pro o contro occorrerebbe prendere atto che il contesto storico è profondamente mutato e che le preoccupazioni che animavano Milton Friedman (il socialismo reale, il potere manageriale e le rendite monopolistiche) sono ormai superate o si pongono in termini diversi da allora. Può essere invece utile riprenderne il messaggio per discutere come si pone oggi il tema del profitto rispetto alle finalità dell’impresa e quello del rispetto delle regole del gioco e dei costumi etici rispetto al tema, anch’esso in evoluzione, della responsabilità sociale.
title: Оптимизация лечения пациентов с зубочелюстными аномалиями, осложненными дисфункцией височно-нижнечелюстного сустава
Creators: name: Фадеев, Р.
name: Паршин, В.
name: Прозорова, Н.
Publisher: name: Новгородский государственный университет имени Ярослава Мудрого (НовГУ)
Year: 2020

description: Изучению аномалий прикуса со смещением нижней челюсти уделялось внимание с начала развития ортодонтии в нашей стране. Ещё Л.В. Ильина-Маркосян, Ф.Я. Хорошилкина, Ю.М. Малыгин и др. отмечали, что смещение может являться как следствием нарушения развития лицевого отдела черепа, так и следствием нарушения
функции мышц и височно-нижнечелюстных суставов (ВНЧС). Опыт зарубежных коллег показывает, что изучение ВНЧС тесно связано с биомеханикой и другими вопросами гнатологии (Guner D.D. 2003, Nebbe В. 2005 и др.). Однако до сих пор ключевые понятия: центральное соотношение челюстей, центральная окклюзия, состояние покоя, привычная окклюзия и т.д. (Пузин М.Н., Вязьмин А.Я. 2002) – имеют разное толкование среди специалистов, что затрудняет их кооперацию. Следовательно, необходим поиск новых аргументов и фактов, подтверждающих ту или иную точку зрения для выработки общих стоматологических взглядов.
Comparative Analysis of Students Training Needs Regarding Internet and its Effects
Creators: name: Monica, Turturean; Ciprian, Turturean
Publisher: name: Editura Universitara
Year: 2012
Subjects: subject: 0 Social sciences
subject: 37 Education
subject: 371 Instructional design
subject: 004:37 Elearning

description: In this article we will try to realize a comparative study in order to find out if the internet has a positive or a negative role for undergraduate s university students. The purpose of this study is to identify the perception of undergraduate university students regarding the effects of the internet for their scientific activities and their training needs. The study is based on data obtained from the application of a sample survey which studies the opinion of undegraduate students regarding the role of internet in students education.
Large-N volume independence in conformal and confining gauge theories
Creators: name: Unsal, Mithat
name: Yaffe, Laurence G.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Consequences of large $N$ volume independence are examined in conformal and confining gauge theories. In the large $N$ limit, gauge theories compactified on $\R^{d-k} \times (S^1)^k$ are independent of the $S^1$ radii, provided the theory has unbroken center symmetry. In particular, this implies that a large $N$ gauge theory which, on $\R^d$, flows to an IR fixed point, retains the infinite correlation length and other scale invariant properties of the decompactified theory even when compactified on $\R^{d-k} \times (S^1)^k$. In other words, finite volume effects are $1/N$ suppressed. In lattice formulations of vector-like theories, this implies that numerical studies to determine the boundary between confined and conformal phases may be performed on one-site lattice models. In $N=4$ supersymmetric Yang-Mills theory, the center symmetry realization is a matter of choice: the theory on $\R^{4-k}\times (S^1)^k$ has a moduli space which contains points with all possible realizations of center symmetry. Large $N$ QCD with massive adjoint fermions and one or two compactified dimensions has a rich phase structure with an infinite number of phase transitions coalescing in the zero radius limit.
description: 24 pages, added ref
Form factors in the Bullough-Dodd related models: The Ising model in a magnetic field
Creators: name: Alekseev, Oleg
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider particular modification of the free-field representation of the form factors in the Bullough-Dodd model. The two-particles minimal form factors are excluded from the construction. As a consequence, we obtain convenient representation for the multi-particle form factors, establish recurrence relations between them and study their properties. The proposed construction is used to obtain the free-field representation of the lightest particles form factors in the $Φ_{1,2}$ perturbed minimal models. As a significant example we consider the Ising model in a magnetic field. We check that the results obtained in the framework of the proposed free-field representation are in agreement with the corresponding results obtained by solving the bootstrap equations.
description: 20 pages; v2: some misprints, textual inaccuracies and references corrected; some references and remarks added
Mid-Infrared Spectral Measures of Star-Formation and AGN Activity in Normal Galaxies
Creators: name: Treyer, Marie
name: Schiminovich, D.
name: Johnson, B. D.
name: O'Dowd, M.
name: Martin, C. D.
name: Wyder, T.
name: Charlot, S.
name: Heckman, T.
name: Martins, L.
name: Seibert, M.
name: van der Hulst, J. M.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We investigate the use of MIR PAH bands, continuum and emission lines as probes of star-formation and AGN activity in a sample of 100 'normal' and local (z~0.1) emission-line galaxies. The MIR spectra were obtained with the Spitzer Space Telescope Infrared Spectrograph (IRS) as part of the Spitzer-SDSS-GALEX Spectroscopic Survey (SSGSS) which includes multi-wavelength photometry from the UV to the FIR and optical spectroscopy. The continuum and features were extracted using PAHFIT (Smith et al. 2007), a decomposition code which we find to yield PAH equivalent widths up to ~30 times larger than the commonly used spline methods. Despite the lack of extreme objects in our sample (such as strong AGNs, low metallicity galaxies or ULIRGs), we find significant variations in PAH, continuum and emission line properties and systematic trends between these MIR properties and optically derived physical properties such as age, metallicity and radiation field hardness. We revisit the diagnostic diagram relating PAH equivalent widths and [Ne II]12.8micrometers/[O IV]25.9micrometers line ratios and find it to be in much better agreement with the standard optical star-formation/AGN classification than when spline decompositions are used, while also potentially revealing obscured AGNs. The luminosity of individual PAH components, of the continuum, and with poorer statistics, of the neon emission lines and molecular hydrogen lines, are found to be tightly correlated to the total IR luminosity, making individual MIR components good gauges of the total dust emission in SF galaxies. Like the total IR luminosity, these individual components can be used to estimate dust attenuation in the UV and in Halpha lines based on energy balance arguments. We also propose average scaling relations between these components and dust corrected, Halpha derived star-formation rates.
description: Accepted for publication in ApJ
Who s Afraid of Ubiquity? Opportunities and Challenges of Project-Based Learning in School Contexts
Creators: name: Catalina, Ulrich
Publisher: name: Editura Universitara
Year: 2012
Subjects: subject: 0 Social sciences
subject: 37 Education
subject: 371 Instructional design
subject: 004:37 Elearning

description: Ubiquitous learning and project approach are genuinely connected. Project work has strong potential to provide both powerful contextual learning experiences and serendipitous exploration and discovery of the connected nature of information in the real world. Such promising features could equally be seen as challenges.
Learning with Unavailable Data: Generalized and Open Zero-Shot Learning
Creators: name: MARMOREO, FEDERICO
Publisher: name: Universit� degli studi di Genova
Year: 2022

description: The field of visual object recognition has seen a significant progress in recent years thanks to the availability of large-scale annotated datasets. However, labelling a large amount of data is difficult and costly and can be simply infeasible for some classes due to the long-tail instances distribution problem.

Zero-Shot Learning (ZSL) is a framework that consider the case in which for some of the classes no labeled training examples are available to train the model. To solve the problem a multi-modal source of information, the class (semantic) embeddings, is exploited to extract knowledge from the available classes, the seen classes, and recognize novel categories for which the class embeddings is the only information available, namely, the unseen classes.

To directly targeting the extreme imbalance in the data, in this thesis, we first propose a methodology to improve synthetic data generation for the unseen classes through their class embeddings. Second, we propose to generalize the Zero-Shot Learning framework towards a more competitive and real-world oriented scenario. Thus, we formalize the problem of Open Zero-Shot Learning as the problem of recognizing seen and unseen classes, as in ZSL, while also rejecting instances from unknown categories, for which neither visual data nor class embeddings are provided. Finally, we propose methodologies to not only generate unseen categories, but also the unknown ones.
On chemiluminescent emission from an infiltrated chiral sculptured thin film
Creators: name: Jamaian, Siti S.
name: Mackay, Tom G.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: The theory describing the far-field emission from a dipole source embedded inside a chiral sculptured thin film (CSTF), based on a spectral Green function formalism, was further developed to allow for infiltration of the void regions of the CSTF by a fluid. In doing so, the extended Bruggeman homogenization formalism--which accommodates constituent particles that are small compared to wavelength but not vanishingly small--was used to estimate the relative permittivity parameters of the infiltrated CSTF. For a numerical example, we found that left circularly polarized (LCP) light was preferentially emitted through one face of the CSTF while right circularly polarized (RCP) light was preferentially emitted through the opposite face, at wavelengths within the Bragg regime. The centre wavelength for the preferential emission of LCP/RCP light was red shifted as the refractive index of the infiltrating fluid increased from unity, and this red shift was accentuated when the size of the constituent particles in our homogenization model was increased. Also, the bandwidth of the preferential LCP/RCP emission regime decreased as the refractive index of the infiltrating fluid increased from unity.
Rimedi e tutele nella disciplina della vendita: una ricostruzione nell'ottica dell'autonomia
Creators: name: PESCE, EDOARDO
Publisher: name: Universit� degli studi di Genova
Year: 2021

description: La tesi si occupa del rapporto che pu� intercorrere fra autonomia privata e i cosiddetti rimedi contrattuali, sulla cui identificazione concettuale ci si sofferma, traendo indicazioni circa possibilit�, limiti e condizioni d'uso dalla disciplina tipica interna del contratto di vendita, fatta oggetto di uno studio analitico.
Toward understanding the nature of the relationship between personality and well-being states and traits
Creators: name: Magee, Carly Elizabeth
Publisher: name: University of British Columbia
Year: 2016

description: While past research has demonstrated a robust connection between dispositional personality traits and well-being, relatively little research has comprehensively examined the ways in which Big Five personality states may be associated with short-term experiences of well-being within individuals. This research examines two experience sampling studies to address three central questions about the nature of the relationship between personality and well-being states: (1) to what extent do personality and well-being states covary within individuals? (2) to what extent do personality and well-being states influence one another within individuals? and (3) to what extent are these within person relationships moderated by dispositional personality traits and well-being? Results showed that all Big Five personality states were correlated with short term experiences of well-being within individuals. Individuals were more extraverted, emotionally stable, conscientious, agreeable and open in moments when they experienced higher well-being (greater self-esteem, life satisfaction positive affect and less negative affect). Moreover, results indicated that personality and well-being states dynamically influenced one another over time within individuals, and that these associations were not generally moderated by dispositional traits. Thus, this research demonstrates the inter-connectedness of behaviour and well-being in the context of the Big Five model of personality.
17ß-Estradiol: Phase II-Metabolismus und Genotoxizität oxidativer Metaboliten
Creators: name: Gerstner, Silke
Publisher: name: Karlsruhe
Year: 2008
Subjects: Estradiol
Catecholestrogene
Phase II-Metabolismus
Genotoxizitaet
Isoflavone

description: Das Steroidhormon 17 beta-Estradiol sowie seine reaktiven Metaboliten, die Catecholestrogene, werden mit der Entstehung hormonabhängiger Krebserkrankungen in Verbindung gebracht. Deshalb wurde in dieser Arbeit ihre Inaktivierung im Rahmen des Phase II-Metabolismus untersucht. Weiterhin wurde der Zusammenhang zwischen dem Phase II-Metabolismus der Catecholestrogene und der Genotoxizität dieser reaktiven Estradiol-Metaboliten ermittelt.
Fundamental aspects of using electric fences for groundwater remediation
Creators: name: Gregolec, Gabriele
Publisher: name: Karlsruhe
Year: 2008
Subjects: electrocinetic remediation
reactive barrier
electric fence
electromigration
groundwater

description: The potential of applying an electrokinetic fence upstream of a reactive barrier to enhance its long-term efficiency was the research impulse. Hence, the focus of the study laid on the investigation of fundamentals of electrokinetic retention of charged groundwater components against hydraulic flow. Different electrode types and configurations were studied by laboratory experiments. Theoretical modelling was applied to confirm the experimental results.
Additional file 6 of Pubertal timing and breast cancer risk in the Sister Study cohort
Creators: name: Goldberg, Mandy
name: D’Aloisio, Aimee A.
name: O’Brien, Katie M.
name: Zhao, Shanshan
name: Sandler, Dale P.
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Biotechnology
subject: Mathematical Sciences not elsewhere classified
subject: Cancer
subject: Mental Health

description: Additional file 6: Table S5. Hazard ratios (HRs) and 95% confidence intervals (CIs) for the associations between pubertal timing and tempo and incident breast cancer in the Sister Study cohort using the same categories as in the Generations Study [10]
Financial models in continuous time with self-decomposability: application to the pricing of energy derivatives
Creators: name: GARDINI, MATTEO
Publisher: name: Universit� degli studi di Genova
Year: 2022

description: Based on the concept of self-decomposability we extend some recent multidimensional
L�vy models by using multivariate subordination. Our aim is to construct multi-asset
market models in which the systemic risk instead of affecting all markets at the same
time presents some stochastic delay. In particular we derive new multidimensional
versions of the well known Variance Gamma and inverse Gaussian processes. To this
end, we extend some known approaches keeping their mathematical tractability, we
study the properties of the new processes, we derive closed form expressions for their
characteristic functions and, finally, we detail how new and efficient Monte Carlo
schemes can be implemented.
As second contribution of the work, we construct a new L�vy process, termed
the Variance Gamma++ process, to model the dynamic of assets in illiquid markets.
Such a process has the mathematical tractability of the Variance Gamma process
and is obtained relying upon the self-decomposability of the gamma law. We give a
full characterization of the Variance Gamma++ process in terms of its characteristic
triplet, characteristic function and transition probability density. These results
are instrumental to apply Fourier-based option pricing and maximum likelihood
techniques for the parameter estimation. Furthermore, we provide efficient path
simulation algorithms, both forward and backward in time. We also obtain an
efficient ?integral-free? explicit pricing formula for European options.
Finally, we illustrate the applicability of our models in the context of gas, power
and emission markets focusing on their calibration, on the pricing of spread options
written on different underlying commodities and on the evaluation of exotic American
derivatives, giving an economical interpretation to the obtained results.
Gravity modes as a way to distinguish between hydrogen- and helium-burning red giant stars
Creators: name: Bedding, Timothy R.
name: Mosser, Benoit
name: Huber, Daniel
name: Montalban, Josefina
name: Beck, Paul
name: Christensen-Dalsgaard, Joergen
name: Elsworth, Yvonne P.
name: Garcia, Rafael A.
name: Miglio, Andrea
name: Stello, Dennis
name: White, Timothy R.
name: De Ridder, Joris
name: Hekker, Saskia
name: Aerts, Conny
name: Barban, Caroline
name: Belkacem, Kevin
name: Broomhall, Anne-Marie
name: Brown, Timothy M.
name: Buzasi, Derek L.
name: Carrier, Fabien
name: Chaplin, William J.
name: Di Mauro, Maria Pia
name: Dupret, Marc-Antoine
name: Frandsen, Soeren
name: Gilliland, Ronald L.
name: Goupil, Marie-Jo
name: Jenkins, Jon M.
name: Kallinger, Thomas
name: Kawaler, Steven
name: Kjeldsen, Hans
name: Mathur, Savita
name: Noels, Arlette
name: Aguirre, Victor Silva
name: Ventura, Paolo
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Red giants are evolved stars that have exhausted the supply of hydrogen in their cores and instead burn hydrogen in a surrounding shell. Once a red giant is sufficiently evolved, the helium in the core also undergoes fusion. Outstanding issues in our understanding of red giants include uncertainties in the amount of mass lost at the surface before helium ignition and the amount of internal mixing from rotation and other processes. Progress is hampered by our inability to distinguish between red giants burning helium in the core and those still only burning hydrogen in a shell. Asteroseismology offers a way forward, being a powerful tool for probing the internal structures of stars using their natural oscillation frequencies. Here we report observations of gravity-mode period spacings in red giants that permit a distinction between evolutionary stages to be made. We use high-precision photometry obtained with the Kepler spacecraft over more than a year to measure oscillations in several hundred red giants. We find many stars whose dipole modes show sequences with approximately regular period spacings. These stars fall into two clear groups, allowing us to distinguish unambiguously between hydrogen-shell-burning stars (period spacing mostly about 50 seconds) and those that are also burning helium (period spacing about 100 to 300 seconds).
description: to appear as a Letter to Nature
Competition Between Electronic Auction Marketplaces - An Analysis Based On Computer Simulations
Creators: name: Chen, Xin
Publisher: name: Karlsruhe
Year: 2008
Subjects: e-auction
simulation
market structure
listing fee

description: This dissertation studies the competition between two e-auction marketplaces using computer simulations. The simulation answers questions of whether the evolution of the market converges to market duopoly or monopoly? Moreover, what is the influence of the listing fee on the evolution of the market? Based on the findings, this study suggests that marketplace operators make use of listing fee in competing with their rivals to attract participants.
Using Webquests in initial Teacher Training
Creators: name: Rosa-Eva, Valle Florez; Resines Gordaliza, Jose A.
Publisher: name: Editura Universitara
Year: 2012
Subjects: subject: 0 Social sciences
subject: 37 Education
subject: 371 Instructional design
subject: 004:37 Elearning

description: This study examines how student teachers change their perceptions about the goals of scientific literacy and the nature of science thought webquest based activities.
Dynamics of Vortex Dipoles in Confined Bose-Einstein Condensates
Creators: name: Torres, P. J.
name: Kevrekidis, P. G.
name: Frantzeskakis, D. J.
name: Carretero-Gonzalez, R.
name: Schmelcher, P.
name: Hall, D. S.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: We present a systematic theoretical analysis of the motion of a pair of straight counter-rotating vortex lines within a trapped Bose-Einstein condensate. We introduce the dynamical equations of motion, identify the associated conserved quantities, and illustrate the integrability of the ensuing dynamics. The system possesses a stationary equilibrium as a special case in a class of exact solutions that consist of rotating guiding-center equilibria about which the vortex lines execute periodic motion; thus, the generic two-vortex motion can be classified as quasi-periodic. We conclude with an analysis of the linear and nonlinear stability of these stationary and rotating equilibria.
description: 8 pages, 3 figures, to appear in Phys. Lett. A
Transnational School Partnerships Supoorted by ICT. Benefits for Learning
Creators: name: Simona, Velea
Publisher: name: Editura Universitara
Year: 2012
Subjects: subject: 0 Social sciences
subject: 37 Education
subject: 371 Instructional design
subject: 004:37 Elearning

description: Education faces a continuous reform aimed to modernize the system as a whole and particularly the teaching and learning practices. The pressure for reforming education is sustained by the social changes, mainly determined by the technological progress. Pupils, teachers and parents mobility, the economical and cultural globalization and the increasing use of information and communication technology (ICT) in almost all the aspects of everyday life are influencing the school transformation. In this context, the needs for communication and collaboration, for exchange of ideas and for harmonizing the education between countries are obvious.
Determination of clouds in MSG data for the validation of clouds in a regional climate model
Creators: name: Huckle, Roger
Publisher: name: Karlsruhe
Year: 2009
Subjects: MSG
clouds
climate
CLM
OBIA

description: Regional climate models (e.g. CLM) can help to asses the influence of the antropogenic climate change on the different regions of the earth. Validation of these models is very important. Satellite data are of great benefit, as data on a global scale and high temporal resolution is available. In this thesis a cloud detection and object based cloud classification for Meteosat Second Generation (MSG) was developed and used to validate CLM clouds. Results show sometimes too many clouds in the CLM.
Internet Resources for Special Educational Needs and Inclusion
Creators: name: Ecaterina, Vrasmas; Traian, Vrasmas
Publisher: name: Editura Universitara
Year: 2012
Subjects: subject: 0 Social sciences
subject: 37 Education
subject: 371 Instructional design
subject: 004:37 Elearning

description: Children with special educational needs (SEN) are one important group in the social and educational area. Two main concepts have been explored (SEN and inclusion) in order to identify the amplitude and the main meanings and built lists of publications available on internet, from major resources. One major aim of this study was to document, via eLearning sources, an important draft document (a national strategy) posted on the website of the Romanian Education Ministry.
Effect of nuclear compressibility on the fragmentation in peripheral Au+Au collisions at 35 AMeV
Creators: name: Vermani, Yogesh K.
name: Chugh, Rajiv
name: Sood, Aman D.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We studied the fragmentation in Au(35 AMeV)+Au collisions at reduced impact parameters in the range b/b_max=0.55 and 0.95 using soft and hard equations of state. The comparison of of QMD simulations at 100 fm/c as a function of reduced impact parameter $b/b_{max}$ with Multics Miniball data showed that soft EoS accurately reproduces the experimental trend of declining fragment multiplicity with impact parameter. The hard EoS on the contrary, seems too explosive to explain the data.
description: 2 pages, 2 figures, DAE Symposium on Nuclear Physics, December 20-24, 2010, BITS, Pilani, Rajasthan,India-333031
Il Corpo dello Yoga: le donne nell'immaginario e nella pratica dello yoga contemporaneo
Creators: name: MANGIAROTTI, EMANUELA
Publisher: name: Universit� degli studi di Genova
Year: 2022

description: Over the past two decades, yoga has become a global phenomenon. Publications, events, sites and styles of practice, as well as the number of teachers and practitioners have grown exponentially, diversifying and reconfiguring yoga as a central component of paths of spiritual research, wellness, health, personal development, renewal of lifestyles and social transformation. Meanwhile yoga has assumed a prominent position in academic research, transcending the disciplinary boundaries of the history of philosophy and religions, to enter the fields of the bio-medical and the social sciences. This dissertation looks at yoga through the lens of sociology. Informed by my personal experience as a scholar-practitioner, it is grounded on an ethnographic research conducted in the city of Genoa and on the analysis of the imagery concerning women, the body and the practice of yoga. The research identifies continuities and interferences between the contexts of practice and the cultural repertoires in the yogaland, focusing on the representation of white femininity as an ideological construct that mediates the normalization of a yoga-for-all universalist paradigm. It then shows how the intersection of gender and coloniality configures the contexts of practice, the spheres of production of knowledge (including the academia) and the imaginaries around yoga, within a political-economic regime of precarity. The body of yoga, as a historically situated locus of experience and reproduction of practices concerning health, healing, spirituality, well-being, personal growth and social transformation, redefines corporeal, social and cultural boundaries of the yoga-for-all paradigm. At the same time, the thesis identifies dissonances between representation and experience, recognizing in the practicing body a legitimate site of signifying experience, where the combined effects of compulsory heterosexuality and racism are deposited and where the material repercussions of precarity are inscribed. In this sense, interferences emerged with respect to the dominant representation of the body of yoga open up a space for constructing a micro-politics of the practice.
E-Learning Process and Outcomes in Developing a European Professional s Network in inclusive Education
Creators: name: Traian, Vrasmas; Ecaterina, Vrasmas
Publisher: name: Editura Universitara
Year: 2012
Subjects: subject: 0 Social sciences
subject: 37 Education
subject: 371 Instructional design
subject: 004:37 Elearning

description: The paper describes how eLearning media was used in a set of three European projects, from 5 countries, aiming to promote inclusive education. Most of the project preparation, implementation and reporting was made trough eLearning (email communication, site development, electronic forms filling, internet search, power point preparation and presentation, reporting on a European data base etc).
CO observations of high-z radio galaxies MRC 2104-242 and MRC 0943-242: spectral-line performance of the Compact Array Broadband Backend
Creators: name: Emonts, B. H. C.
name: Norris, R. P.
name: Feain, I.
name: Miley, G.
name: Sadler, E. M.
name: Villar-Martin, M.
name: Mao, M. Y.
name: Oosterloo, T. A.
name: Ekers, R. D.
name: Stevens, J. B.
name: Wieringa, M. H.
name: Coppin, K. E. K.
name: Tadhunter, C. N.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present the first 7-millimetre observations of two high-redshift, Lya-bright radio galaxies (MRC 2104-242 and MRC 0943-242) performed with the 2 x 2 GHz instantaneous bandwidth of the Compact Array Broadband Backend (CABB) at the Australia Telescope Compact Array (ATCA). The aim was to search for 12CO(1-0) emission in these systems and test the millimetre capabilities of CABB for performing spectral line observations at high redshifts. We show that the stable band and enhanced velocity coverage of CABB, combined with hybrid array configurations, provide the ATCA with excellent 7-mm capabilities that allow reliable searches for the ground transition of CO at high redshifts. In this paper we explicitly discuss the calibration procedures used to reach our results. We set a firm upper limit to the mass of molecular gas in MRC 2104-242 (z = 2.5) of M(H2) < 2 x 10^10 (alpha_x/0.8) M_sun. For MRC 0943-242 (z=2.9) we derive an upper limit of M(H2) < 6 x 10^10 (alpha_x/0.8) M_sun. We also find a tentative 3-sigma CO detection in the outer part of the giant Lya halo that surrounds MRC 0943-242. The 30-33 GHz radio continuum of MRC 2104-242 and MRC 0943-242 is reliably detected. Both radio sources show a spectral index of alpha ~ -1.5 between 1.4 and 30 GHz, with no evidence for spectral curvature within this range of frequencies.
description: Accepted for publication in MNRAS -- 11 pages, 6 figures (full resolution version available at http://www.atnf.csiro.au/people/~emo004/Emonts_COinHzRG_apr11.pdf)
Le sfide della transizione ecologica
Creators: name: Gozzi, Antonio
Publisher: name: Department of Economics and Business Studies, University of Genoa
Year: 2021
Subjects: Management

description: La transizione ecologica rappresenta una prospettiva epocale di evoluzione dell’economia e della società che trova origine nei limiti di uno sviluppo basato sullo sfruttamento indiscriminato di risorse non rinnovabili e nel crescente deterioramento dell’acqua, del mare e del suolo, implicando radicali modificazioni nei modi di produrre, consumare e vivere. Se il problema si pone a scala planetaria, diverse sono tuttavia tra mondo sviluppato e mondo in via di sviluppo le sensibilità e le priorità. Un futuro “verde” in ogni caso non può prescindere dallo sviluppo delle tecnologie, dal ruolo delle imprese nell’acquisirle e svilupparle, e dalla capacità dei governi di guidare i processi indicando obiettivi sfidanti e creando condizioni abilitanti.
Neue Methodik zur Planung globaler Produktionsverbünde unter Berücksichtigung der Einflussgrößen Produktdesign, Prozessgestaltung und Standortentscheidung
Creators: name: Grauer, Matthias
Publisher: name: Karlsruhe
Year: 2009
Subjects: Internationalisierung
Produktionsverbund
Produktdesign
Prozessgestaltung
Standortentscheidung

description: Die Globalisierung zwingt Großunternehmen, die Produktionsstrukturen neu auszurichten. Dabei muss die Konfiguration globaler Produktionsverbünde die drei Einflussgrößen Produktdesign, Prozessgestaltung und Standortentscheidung berücksichtigen. Die drei Größen sind die wesentlichen Einflussstärken eines globalen Produktionsverbunds. Die Konfiguration eines globalen Produktionsverbunds kann nur unter Berücksichtigung aller drei Einflussgrößen sinnvoll vorgenommen werden. Eine isolierte Betrachtung einzelner Einflussgrößen greift zu kurz. Die Arbeit stellt das Problem vor und liefert hierfür einen geeigneten Lösungsansatz.