cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Fluctuations, dissipation and the dynamical Casimir effect
Creators: name: Dalvit, Diego A. R.
name: Neto, Paulo A. Maia
name: Mazzitelli, Francisco Diego
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Vacuum fluctuations provide a fundamental source of dissipation for systems coupled to quantum fields by radiation pressure. In the dynamical Casimir effect, accelerating neutral bodies in free space give rise to the emission of real photons while experiencing a damping force which plays the role of a radiation reaction force. Analog models where non-stationary conditions for the electromagnetic field simulate the presence of moving plates are currently under experimental investigation. A dissipative force might also appear in the case of uniform relative motion between two bodies, thus leading to a new kind of friction mechanism without mechanical contact. In this paper, we review recent advances on the dynamical Casimir and non-contact friction effects, highlighting their common physical origin.
description: 39 pages, 4 figures. Review paper to appear in Lecture Notes in Physics, Volume on Casimir Physics, edited by Diego Dalvit, Peter Milonni, David Roberts, and Felipe da Rosa. Minor changes, a reference added
Adaptive insertion of cohesive elements for simulation of delamination in laminated composite materials
Creators: name: Shor, Ofir
Publisher: name: University of British Columbia
Year: 2016

description: Composite materials are increasingly being used in advanced structural ap- plications. Debonding of adjacent laminate layers, also known as delamination, is considered to be one of the most dominant damage mechanisms affecting the behavior of composite laminates. Various numerical methods for simulating delamination in composite materials do exist, but they are generally limited to small-scale structures due to their complexity and high numerical cost. In this thesis, a novel technique aimed to allow efficient simulation of delamination in large-scale laminated composite structures is presented. During the transient analysis, continuum elements within regions where delamination has the potential to initiate are adaptively split through their thickness into two shell elements sandwiching a cohesive element. By elimi- nating the a priori requirement to implant cohesive elements at all possible spatial locations, the computational efforts are reduced, thus lending the method suitable for treatment of practical size structures. The methodol- ogy, called the local cohesive zone method (LCZ), is verified here through its application to Mode-I, Mode-II and Mixed-Mode loading conditions, and is validated using a dynamic tube-crushing loading case and plate impact events. Good agreement between the numerical results and the available experimental data is obtained. The results obtained using the LCZ method are compared favourably with the numerical results obtained using the con- ventional cohesive zone method (CZM). The numerical performance of the method and its efficiency is investi- gated. The efficiency of the method was found to be superior compared to that of the conventional CZM, and was found to increase with increasing model size. The LCZ method is shown to have a lower effect on reducing the structural stiffness of the structure, compared to the conventional CZM. The results obtained from the application of the LCZ method to the various cases tested are encouraging, and prove that the local and adaptive insertion of cohesive zones into a finite element mesh can effectively capture the delamination crack propagation in laminated composite structures. It is expected that further improvements in speed and accuracy will be attained once the algorithm is embedded within commercial finite element solvers as a built-in feature.
Rule Extraction in a Cardiovascular Disease Database Using Association Rule Algorithms
Creators: name: Papaconstantinou, L.
Publisher: name: Zenodo
Year: 2009

description: Η µελέτη αυτή αφορά την εξόρυξη κανόνων συσχέτισης από βάση δεδοµένων µε ασθενείς µε καρδιαγγειακά επεισόδια. Είναι γεγονός ότι στην Κύπρο παρατηρείται αυξηµένη συχνότητα των καρδιαγγειακών επεισοδίων. Σκοπός της µελέτης µας, είναι µέσω της εφαρµογής αλγορίθµων εξόρυξης δεδοµένων να προβούµε σε κάποια συµπεράσµατα και κανόνες που συµβάλλουν στην πρόκληση καρδιαγγειακών επεισοδίων. Οι αλγόριθµοι που θα χρησιµοποιηθούν είναι αλγόριθµοι παραγωγής κανόνων συσχέτισης. Για την εξόρυξη κανόνων συσχέτισης έχει χρησιµοποιηθεί ο αλγόριθµος Apriori, όπως επίσης παρουσιάζεται κι ένας καινούργιος αλγόριθµος, ο Akamas, ο οποίος για την εξόρυξη κανόνων δεν βασίζεται στο µέτρο αξιολόγησης κανόνων support. Για την εξόρυξη των κανόνων συσχέτισης έχει υλοποιηθεί ένα εργαλείο για εξόρυξη κανόνων, το οποίο βασίζεται στους αλγόριθµους Apriori και Akama. Στο εργαλείο έχουν υλοποιηθεί επίσης διάφορα σηµαντικά µέτρα αξιολόγησης κανόνων, εκτός από το support και το confidence, από του οποίος ο χρήστης µπορεί να επιλέξει για να φιλτράρει και να ταξινοµήσει τους εξαγόµενους κανόνες. Εξετάζοντας τους κανόνες που έχουν εξαχθεί, παρατηρείται ότι o πιο σηµαντικός παράγοντας που µπορεί να προκαλέσει καρδιαγγειακό επεισόδιο, είναι το κάπνισµα. Ασθενείς µε χαµηλή περιεκτικότητας καλής χοληστερόλης στο αίµα, είναι επίσης κρίσιµο για πρόκληση καρδιαγγειακού επεισοδίου. Ενώ ο παράγοντας τριγλυκλερίδια, που µε βάση τους γιατρούς είναι ένας από τους πιο σηµαντικούς παράγοντες, δεν παρατηρείται να εµφανίζεται στους κανόνες. Από τα αποτελέσµατα έχει παρατηρηθεί ότι ο κάθε παράγοντας που µπορεί να οδηγήσει σε καρδιαγγειακό επεισόδιο, όπως παραδείγµατος χάριν το κάπνισµα και χαµηλή καλή χοληστερόλη είναι ανεξάρτητοι µεταξύ τους. Δηλαδή καρδιαγγειακό επεισόδιο µπορεί να προκληθεί έστω κι αν µόνο ένας από τους παράγοντας παρουσιάζεται.
description: Master Theses
Flooding Induced Seismicity in the Ruhr Area – a geomechanics numerical modelling approach
Creators: name: Niederhuber, Thomas
name: Rische, Martina
name: Röckel, Thomas
name: Müller, Birgit
name: Schilling, Frank
Publisher: name: Copernicus Gesellschaft mbH
Year: 2023

description: The Ruhr region is characterized by centuries of coal mining at depths reaching more than 1000 meters. After the closure of the last mines, their controlled flooding started. The Floodrisk project investigates ground uplift, stress changes due to pore pressure changes and the reactivation potential of faults to explain induced seismicity. We focused on monitoring the eastern Ruhr area and are investigating in detail the relationship between mine water rise, tectonic stress and induced seismicity in the Haus Aden drainage area. In the region of the former "Bergwerk Ost", which had the highest seismicity in the Ruhr area during active mining, the RUB has installed a network of up to 30 short-period seismic stations. Continuous monitoring of seismicity and mine water levels is available for this region from the active mining phase through the post-mining phase to flooding. The temporal evolution of the mine water level after the pumps were shut down in mid-2019 shows a strong correlation with the temporal evolution of the observed microseismicity. Over 2200 induced events have been located since the beginning of flooding, showing spatial clustering. A comparison of the mine galleries, which today serve as the main underground waterways, with the localizations of the events shows that most of the events occur about 300 m below the main pillars located between the longwall panels. This study provides a compilation of the regional stress state in the eastern Ruhr area based on the mine measurements, which were re-evaluated to derive the regional stress component and compared with stress orientations from independent sources (information on stresses in deep boreholes and earthquake focal mechanisms). The spatial distribution of stress orientations in the Ruhr region shows a rather homogeneous stress pattern with only very few locations where stress orientations differ significantly from the average. Based on the geometry of the pillars, shafts and longwall panels, a generic numerical FE-model was developed using the compiled stress data for model calibration. The results indicate increased vertical stresses within and below the pillars as a result of stress arching. The horizontal stress changes are minor, thus differential stress increases in the vicinity of the event localizations
(Un)spoken
Creators: name: Auffret, Kacie Marie
Publisher: name: University of British Columbia
Year: 2016

description: Through my art, I present a critical view of nonhuman animals as emotional beings that mourn and also grieve. The inspiration for my thesis came from an across Canada drive that I took from Kelowna, British Columbia to Windsor, Ontario during which time I saw 140 animals dead on the highway. The installation entitled (un)spoken uses motion sensors, video, photography, and mapping to address mourning, grief, “entangled empathy”, and “rewilding” through the symbolic representation of my journey and the crows that followed me on my way. I see my installation as an entry point for individuals to start to rethink their relationships with nonhuman animals in their daily lives. I base the foundation of my creative work around the theoretical concepts from the ideas of Barbara King, Angus Taylor and others who examine nonhuman animals mourning and grief. The idea of “entangled empathy”, which is at the heart of my work, is taken from the research of ecofeminist philosopher, Lori Gruen. Biologist Marc Bekoff’s ideas around compassion and reconnecting with nature through a process that he refers to as “rewilding” is what I seek to explore with the imagery I have chosen to work with. The aim of the work is for the audiences to recognize possible ways of reconnecting to nature and to encourage them to grow more conscious of the fact that human activity has a significant impact on the animal world.
Mr. Charles Wilson
Creators: name: Kelsey, Carleton
name: Kelsey, Carleton, 1913-2005
Publisher: name: Unknown
Year: 0
Subjects: Photographs
People
Portraits
Men

description: This portrait is of Mr. Charles Wilson. This photograph was either taken or collected by Amagansett historian and librarian Carleton Kelsey.
description: This photograph is part of the collection of the Carleton Kelsey Collection of the Amagansett Historical Association. Kelsey was a local historian and librarian who collected photographs from others to add to the many photographs he took of the community himself.
Multipole analysis in cosmic topology
Creators: name: Kramer, Peter
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: Low multipole amplitudes in the Cosmic Microwave Background CMB radiation can be explained by selection rules from the underlying multiply-connected homotopy. We apply a multipole analysis to the harmonic bases and introduce point symmetry.We give explicit results for two cubic 3-spherical manifolds and lowest polynomial degrees, and derive three new spherical 3-manifolds.
description: 15 pages, with figures
Large-scale interval and point estimates from an empirical Bayes extension of confidence posteriors
Creators: name: Bickel, David R.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Methodology (stat.ME)
subject: Statistics Theory (math.ST)
subject: Quantitative Methods (q-bio.QM)
subject: Applications (stat.AP)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics
subject: FOS: Biological sciences

description: The proposed approach extends the confidence posterior distribution to the semi-parametric empirical Bayes setting. Whereas the Bayesian posterior is defined in terms of a prior distribution conditional on the observed data, the confidence posterior is defined such that the probability that the parameter value lies in any fixed subset of parameter space, given the observed data, is equal to the coverage rate of the corresponding confidence interval. A confidence posterior that has correct frequentist coverage at each fixed parameter value is combined with the estimated local false discovery rate to yield a parameter distribution from which interval and point estimates are derived within the framework of minimizing expected loss. The point estimates exhibit suitable shrinkage toward the null hypothesis value, making them practical for automatically ranking features in order of priority. The corresponding confidence intervals are also shrunken and tend to be much shorter than their fixed-parameter counterparts, as illustrated with gene expression data. Further, simulations confirm a theoretical argument that the shrunken confidence intervals cover the parameter at a higher-than-nominal frequency.
Search for an excess of events with an identical flavour lepton pair and significant missing transverse momentum in sqrt{s} = 7 TeV proton-proton collisions with the ATLAS detector
Creators: name: The ATLAS Collaboration
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Results are presented of a search for supersymmetric particles decaying into final states with significant missing transverse momentum and exactly two identical flavour leptons (e or mu) of opposite charge in sqrt{s}=7 TeV collisions at the Large Hadron Collider. This channel is particularly sensitive to supersymmetric particle cascade decays producing flavour correlated lepton pairs. Flavour uncorrelated backgrounds are subtracted using a sample of opposite flavour lepton pair events. Observation of an excess beyond Standard Model expectations following this subtraction procedure would offer one of the best routes to measuring the masses of supersymmetric particles. In a data sample corresponding to an integrated luminosity of 35 pb-1 no such excess is observed. Model-independent limits are set on the contribution to these final states from new physics and are used to exclude regions of a phenomenological supersymmetric parameter space.
description: 6 pages plus author list (19 pages total), 3 figures, 1 table, submitted to EPJC
Cloud-Based E-Learning Tools for Data Analysis
Creators: name: Grigore, Albeanu; Florin, Popentiu-Vladicescu
Publisher: name: Editura Universitara
Year: 2012
Subjects: subject: 0 Social sciences
subject: 37 Education
subject: 371 Instructional design
subject: 004:37 Elearning

description: This paper describes the most important characteristics of cloud computing paradigm in order to be used as powerful arrows towards efficient approaches in teaching data analysis. Also High Performance Computing aspects are considered for solving large complexity data analysis problems.
Optimization of Structure of Agricultural Insurance Subsidies: A Multi-task Principal Agent Model
Creators: name: HUANG Qi
name: HUANG Qi
Publisher: name: Unknown
Year: 2021
Subjects: subject: Agribusiness
subject: Agricultural insurance, Structure of subsidies, Multi-task principal agent theory

description: Optimizing the structure of agricultural insurance subsidies is of great significance to increasing the supply of agricultural insurance and strengthening the effects of agricultural insurance policies. This paper optimized the structure of agricultural insurance subsidies. It decomposed insurance activities into three parts: underwriting, claim settlement, and agricultural services. Next, it incorporated adverse selection risks, moral hazards, agricultural production and operation risks, insurance company’s behavioral decisions and its risk attitudes into the multi-task principal agent analysis framework. Finally, it discussed how the government designs a subsidy mechanism and adjusts the subsidy structure to increase the insurance supply.
Multimodale Bestimmung des visuellen Aufmerksamkeitsfokus von Personen am Beispiel aufmerksamer Umgebungen
Creators: name: Voit, Michael
Publisher: name: Karlsruhe
Year: 2011
Subjects: Kopfdrehung
visuelle Aufmerksamkeit
Meetinganalyse
Smart-Room

description: Um intuitive Mensch-Maschine-Schnittstellen zu entwerfen, ist es notwendig zu erkennen worauf der Mensch in seinem Handeln Bezug nimmt. Kameras in unmittelbarer Nähe erlauben zwar das direkte Beobachten der Blickrichtung, schränken den Menschen in seinem Handlungsradius allerdings ein. In dieser Arbeit wird deshalb ein System entworfen, das mit Aufnahmen aus unterschiedlichen Blickwinkeln zunächst die Kopfdrehung und hiervon auf die visuelle Aufmerksamkeitszuwendung von Menschen schließt.
Understanding Code Patterns - Analysis, Interpretation & Measurement
Creators: name: Dundas, Jitesh
Publisher: name: arXiv
Year: 2011
Subjects: subject: Software Engineering (cs.SE)
subject: Programming Languages (cs.PL)
subject: FOS: Computer and information sciences

description: This research paper aims to find, analyze and understand code patterns in any software system and measure its quality by defining standards and proposing a formula for the same. Every code that is written can be divided into different code segments, each having its own impact on the overall system. We can analyze these code segments to get the code quality. The measures used in this paper include Lines of Code, Number of calls made by a module, Execution time, the system knowledge of user and developers, the use of generalization, inheritance, reusability and other object-oriented concepts. The entire software code is divided into code snippets, based on the logic that they implement. Each of these code snippets has an impact. This measure is called Impact Factor and is valued by the software developer and/or other system stakeholders. Efficiency = (Code Area / Execution Time) * Qr
description: Index Terms - code area, code patterns, efficiency, lines of code, pattern recognition, software quality; http://www.ijcee.org/papers/008.pdf
Essays on High Frequency and Behavioral Finance
Creators: name: Rezania, Omid
Publisher: name: Karlsruhe
Year: 2011
Subjects: empirical
behavioral
currency
equity
frequency

description: The thesis consists of empirical studies on currency market as well as US equity market. A new volatility estimator using wavelets is proposed and used to analyze financial markets. Currency tick data are analyzed to determine the effects of economic releases on foreign exchange market. Behavioral finance effects are demonstrated in individual and institutional investors.
Dr. med. Karl Rudolf Dietlen ✝
Creators: name: Berckhemer, Fritz
Publisher: name: - NO PUBLISHER DEFINED -
Year: 1931

description: Jahreshefte des Vereins für Vaterländische Naturkunde in Württemberg : zugl. Jahrbuch d. Staatlichen Museums für Naturkunde in Stuttgart
description: Bd. 87, 1931
Recent Soft Computing Approaches in Digital Learning Object Evaluation
Creators: name: Grigore, Albeanu; Florin, Popentiu-Vladicescu
Publisher: name: Editura Universitara
Year: 2012
Subjects: subject: 0 Social sciences
subject: 37 Education
subject: 371 Instructional design
subject: 004:37 Elearning

description: Digital learning objects are powerful units for building learning, education or training  materials based on ICT recent developments. Not only text and photos, but also audio, video, and simulation units are used to build high quality e-lessons (available online), or blended learning resources. There are a large plethora of types of digital resources used in e-Learning content development, and for every category a particular set of criteria are used by experts (mainly e-education experts) to recommend some optimum configuration.
Impact of Mdm2-p53 on the proteasome assembly and disassembly Role of the ubiquitination of some 19S subunits
Creators: name: Letienne, Justine
Publisher: name: Karlsruhe
Year: 2011
Subjects: E3 liagase
Mdm2
p53
ubiquitin
19S and 26S proteasomes

description: The ubiquitin proteasome system is a fundamental actor for the proteolysis of cellular proteins. My results demonstrated that the E3 ligase Mdm2 and its substrate p53 might be implied in the formation of the fully-assembled proteasome. Mdm2 promotes also the ubiquitination of some 19S subunits of the proteasome via a non-conventional chain and it is not a signal for self-degradation. Moreover, this ubiqitination seemed to play a role in the formation of the proteasome.
Trends and Developments in Life Long Learning Systems
Creators: name: Maria, Andronie
Publisher: name: Editura Universitara
Year: 2012
Subjects: subject: 0 Social sciences
subject: 37 Education
subject: 371 Instructional design
subject: 004:37 Elearning

description: Lifelong learning programs are more and more a necessity than an option in today s increasingly dynamic information society. Now, for an employed person to have a successful career, in order to maintain or improve his position, regardless of the industry he is working in, it is not any more enough to finish university studies at a reputable learning institution. Taking into account the increasing rate of the changes we are witnessing, it becomes more and more important for that person to continue the studies after graduating, for the rest of the active career, this being the only reasonable way one can keep up to date with all the technological advances that are taking place.
Quantifying the uncertainties of chemical evolution studies. II. Stellar yields
Creators: name: Romano, D.
name: Karakas, A. I.
name: Tosi, M.
name: Matteucci, F.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: This is the second paper of a series which aims at quantifying the uncertainties in chemical evolution model predictions related to the underlying model assumptions. Specifically, it deals with the uncertainties due to the choice of the stellar yields. We adopt a widely used model for the chemical evolution of the Galaxy and test the effects of changing the stellar nucleosynthesis prescriptions on the predicted evolution of several chemical species. We find that, except for a handful of elements whose nucleosynthesis in stars is well understood by now, large uncertainties still affect the model predictions. This is especially true for the majority of the iron-peak elements, but also for much more abundant species such as carbon and nitrogen. The main causes of the mismatch we find among the outputs of different models assuming different stellar yields and among model predictions and observations are: (i) the adopted location of the mass cut in models of type II supernova explosions; (ii) the adopted strength and extent of hot bottom burning in models of asymptotic giant branch stars; (iii) the neglection of the effects of rotation on the chemical composition of the stellar surfaces; (iv) the adopted rates of mass loss and of (v) nuclear reactions, and (vi) the different treatments of convection. Our results suggest that it is mandatory to include processes such as hot bottom burning in intermediate-mass stars and rotation in stars of all masses in accurate studies of stellar evolution and nucleosynthesis. In spite of their importance, both these processes still have to be better understood and characterized. As for massive stars, presupernova models computed with mass loss and rotation are available in the literature, but they still wait for a self-consistent coupling with the results of explosive nucleosynthesis computations.
description: 28 pages, 23 figures. Accepted for publication in A&A
E-Learning, as Part of Open Distance Learning
Creators: name: Maria, Andronie
Publisher: name: Editura Universitara
Year: 2012
Subjects: subject: 0 Social sciences
subject: 37 Education
subject: 371 Instructional design
subject: 004:37 Elearning

description: Open distance learning, a type of learning that was used for a long period of time by universities and other learning institutions, has finally developed into an efficient learning solution, by the intensive use of modern learning systems based on the information and communication technologies, also being referred as e- learning.
Visiting Griffin at the confluence of playwriting, ethics, and spirit : towards poet(h)ic inquiry in research-based theatre
Creators: name: Duff, Heather Anne
Publisher: name: University of British Columbia
Year: 2016

description: Poet(h)ic inquiry is a pedagogical space of inquiry at the confluence of playwriting, ethics and spirit, in the context of research-based theatre. It is an inquiry about presences and absences: the yu-mu (Aoki, 2000) within ethico-spiritual dilemmas, with respect to (1) an ethic of meaning, (2) individual and social justice, (3) aesthetic values, (4) an ethic of respect (Tuhiwai Smith, 2005) regarding authorship, and (5) integrated ethical relationality in contexts of teaching-learning-creativity-playwriting-knowing. Within arts-based research, there are notable ethical gaps (Boydell et al., 2012; Gallagher, 2007b; White & Belliveau, 2010) related to a quest for ethicality (Denzin, 2006; Norris, 2009), meaning (Frankl, 1946/2004), and hope-based, emancipatory pedagogy (Freire, 2006) within located social justice. Research-based theatre (Belliveau, 2015; Goldstein, 2012; Lea & Belliveau, 2015; Lea at al., 2011; Norris 2009; Prendergast & Belliveau, 2013; Saldaña, 2005, 2011), which aims to balance aesthetics with instrumental purposes (Jackson, 2005), is well positioned for ethics-situated inquiry, within a plethora of psycho-spiritual, socio-political, and geo-historical contexts. My dissertation play, Visiting Griffin, expresses the interplay between memory and present time. While visiting an absent student actor in a hospital wing, Blythe, a director/drama teacher, inquires poet(h)ically on a thread of memories through the lens of playwriting –incorporating various art forms, genres, literacies and modalities (Siegel, 2006). Scenes depict a paradox of presence-absences: yu-mu (Aoki & Jacknicke, 2000, p. 3), within particular ethical dilemmas across time and place, towards a (possibly redemptive) visit to Griffin, who is both character and metaphor in connection with the notion of self-other: hito (Aoki, 1995, p. 6). Chorus-like, supporting characters, Henriette and Mabel, offer a bilingual presence-absence in counterpoint to Dancer, who embodies a literacy of silence. Themes emerge from Visiting Griffin such as exile and return, expatriation and repatriation, and the cost of social justice. I explore my ethics criteria in dynamic poet(h)ic relationality from various perspectives. Aesthetics in poet(h)ic inquiry is linked to sub-textuality, how theme and meaning are reflected within multi-modalities, and what constitutes aesthetic knowing. Beyond Visiting Griffin, ‘redemptivity’ may be realized as a point of departure, through integrated poet(h)ical relationality on the stage of life.
Multinational enterprises in regional innovation systems: attraction factors and integration mechanisms = Les entreprises multinationales dans les systèmes régionaux d'innovation: facteurs d'attraction et mécanismes d'intégration
Creators: name: Baier, Elisabeth
Publisher: name: Karlsruhe
Year: 2011
Subjects: Multinational enterprises
regional innovation networks
globalisation of R&D
technological attractiveness
regional innovation policy

description: This work explains mutual influences between MNEs and regional innovation networks during innovation processes. An analytical framework integrates different research perspectives and allows analysing the integration of MNEs in regional innovation networks through the identification of attraction factors and interaction mechanisms between regional and organisational learning.
Characterization of ZnSe scintillating bolometers for Double Beta Decay
Creators: name: Arnaboldi, C.
name: Capelli, S.
name: Cremonesi, O.
name: Gironi, L.
name: Pavan, M.
name: Pessina, G.
name: Pirro, S.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: ZnSe scintillating bolometers are good candidates for future Double Beta Decay searches, because of the 82Se high Q-value and thanks to the possibility of alpha background rejection on the basis of the scintillation signal. In this paper we report the characteristics and the anomalies observed in an extensive study of these devices. Among them, an unexpected high emission from alpha particles, accompanied with an unusual pattern of the light vs. heat scatter plot. The perspectives for the application of this kind of detectors to search for the Neutrinoless Double Beta Decay of 82Se are presented.
description: 12 pages, 10 figures
Specification of Red-black Trees: Showcasing Dynamic Frames, Model Fields and Sequences
Creators: name: Bruns, Daniel
Publisher: name: Karlsruhe
Year: 2011

description: Complex data structures still pose a major challenge in specification and verification of object-oriented programs. Leino and Moskal have proposed a suite of benchmarks for verification tools, nicknamed "VACID-0". In contrast to similar papers, the tasks of VACID-0 do not only include verification in terms of an observable behavior but also of internal workings of algorithms and data structures. The arguably most difficult target are so-called red-black black trees. In this contribution, we present an implementation and specification in Java/JML* (i.e., KeY's extension to JML with dynamic frames). It makes use of several new features: first and foremost the dynamic frame theory, model fields, the sequence ADT, as well as some newly supported features from standard JML.
Formal Semantics of Model Fields Inspired by a Generalization of Hilbert's e Terms
Creators: name: Beckert, Bernhard
name: Bruns, Daniel
Publisher: name: Karlsruhe
Year: 2011

description: It is widely recognized that abstraction and modularization are indispensable for specification of real-world programs. In source-code level program specification languages, such as the Java Modeling Language (JML), model fields are a common means for achieving abstraction and information hiding. However, there is yet no well-defined formal semantics for the general case in which the abstraction relation defining a model field is non-functional and may contain references to other model fields. In this contribution, we discuss and compare several possibilities for defining model field semantics, and we give a complete formal semantics for the general case. Our analysis and the proposed semantics is inspired by a generalization of Hilbert's ε terms.
Knowledge Databases for E-Learning Systems
Creators: name: Mihai, Andronie
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 paper are explored the possibilities to apply advanced data analysis techniques, also known as data mining techniques, to improve e-learning platforms in order to offer the students customized courses and to increase the efficiency of e-learning systems, offering the students more flexibility.
From Polymer End-Group Transformations to Tailored Biosurface Functionalization
Creators: name: Dietrich, Mathias Christian
Publisher: name: Karlsruhe
Year: 2011
Subjects: polymer transformation
surface functionalization
ambient temperature conjugation

description: The thesis presents the transformation of RAFT-polymers into hydroxyl functional polymers. Further two conjugation techniques are investigated for usability in macromolecular architecure design employing electrospray mass spectrometry. These conjugation techniques are also employed for functionalization of surfaces such as silicon wafers and cellulose sheets with (thermoresponsive and anti-bacterial) polymers using X-ray photoelectron spectroskopy and IR-microscopy to prove successful coupling.
Integrating E-Learning into Information Systems of Organizations
Creators: name: Mihai, Andronie
Publisher: name: Editura Universitara
Year: 2012
Subjects: subject: 0 Social sciences
subject: 37 Education
subject: 371 Instructional design
subject: 004:37 Elearning

description: In the modern society, computer science is being used by more and more organizations to control their activities by using special software and hardware configurations to automate the processing of data that is available. There appeared a large variety of computer applications designed for specific tasks, but still it is hard to find an application that meets all the requirements of a specific organization. Using separate computer applications for every activity that is carried on can be a solution, but in this case internal communication and compatibility issues can appear.
N=2 Conformal Superspace in Four Dimensions
Creators: name: Butter, Daniel
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We develop the geometry of four dimensional N=2 superspace where the entire conformal algebra of SU(2,2|2) is realized linearly in the structure group rather than just the SL(2,C) x U(2)_R subgroup of Lorentz and R-symmetries, extending to N=2 our prior result for N=1 superspace. This formulation explicitly lifts to superspace the existing methods of the N=2 superconformal tensor calculus; at the same time the geometry, when degauged to SL(2,C) x U(2)_R, reproduces the existing formulation of N=2 conformal supergravity constructed by Howe.
description: 43 pages; v2 references added, acknowledgments updated
Vorläufige Mitteilungen über den Weißen Jura bei Amstetten-Neuhaus im Lonetal
Creators: name: Kehrer, Wilhelm
Publisher: name: - NO PUBLISHER DEFINED -
Year: 1931

description: Jahreshefte des Vereins für Vaterländische Naturkunde in Württemberg : zugl. Jahrbuch d. Staatlichen Museums für Naturkunde in Stuttgart
description: Bd. 87, 1931
The two components of the evolved massive binary LZ Cep. Testing the effects of binarity on stellar evolution
Creators: name: Mahy, L.
name: Martins, F.
name: Machado, C.
name: Donati, J. -F.
name: Bouret, J. -C.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Aims. We present an in-depth study of the two components of the binary system LZCep in order to constrain the effects of binarity on the evolution of massive stars. Methods. We use a set of high-resolution, high signal-to-noise ratio optical spectra obtained over the orbital period of the system to perform a spectroscopic disentangling and derive an orbital solution. We subsequently determine the stellar properties of each component through an analysis with the CMFGEN atmosphere code. Finally, with the derived stellar parameters, we model the Hipparcos photometric light curve using the program NIGHTFALL to obtain the inclination and the real stellar masses. Results. LZCep is a O9III+ON9.7V binary. It is as a semi-detached system in which either the primary or the secondary star almost fills up its Roche lobe. The dynamical masses are about 16.0 $M_{\odot}$ (primary) and 6.5 M_{\odot}$ (secondary). The latter is lower than the typical mass of late-type O stars. The secondary component is chemically more evolved than the primary (which barely shows any sign of CNO processing), with strong helium and nitrogen enhancements as well as carbon and oxygen depletions. These properties (surface abundances and mass) are typical of Wolf-Rayet stars, although the spectral type is ON9.7V. The luminosity of the secondary is consistent with that of core He-burning objects. The preferred, tentative evolutionary scenario to explain the observed properties involves mass transfer from the secondary - which was initially more massive - towards the primary. The secondary is now almost a core He-burning object, probably with only a thin envelope of H-rich and CNO processed material. A very inefficient mass transfer is necessary to explain the chemical appearance of the primary. Alternative scenarios are discussed but they suffer from more uncertainties.
description: Accepted for publication in A&A: 11 pages, 10 figures, 3 tables
Dissipative processes in superfluid quark matter
Creators: name: Mannarelli, M.
name: Colucci, G.
name: Manuel, C.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present some results about dissipative processes in fermionic superfluids that are relevant for compact stars. At sufficiently low temperatures the transport properties of a superfluid are dominated by phonons. We report the values of the bulk viscosity, shear viscosity and thermal conductivity of phonons in quark matter at extremely high density and low temperature. Then, we present a new dissipative mechanism that can operate in compact stars and that is named "rocket term". The effect of this dissipative mechanism on superfluid r-mode oscillations is sketched.
description: 6 pages, 1 figure. Prepared for QCD@work 2010 - International Workshop on QCD - Theory and Experiment, 20-23 June 2010, Martina Franca - Valle d'Itria - Italy
Research on the Operation Mechanism and Promotion Path of Crowdfunding for Rural Tourism
Creators: name: DONG Hongxia
name: WANG Hui
name: DONG Hongxia
name: WANG Hui
Publisher: name: Unknown
Year: 2021
Subjects: subject: Agribusiness
subject: Rural tourism, Crowdfunding, Operation mechanism, Promotion path

description: This paper studies the operation mechanism of crowdfunding for rural tourism from three aspects: the main body of crowdfunding for rural tourism, driving factors and operating stage. At the same time, this paper analyzes the operation risk of crowdfunding for rural tourism from five aspects: legal risk, information asymmetry risk, capital security risk, interest subject conflict risk and industry development risk. It also puts forward measures and suggestions on the promotion of crowdfunding for rural tourism from four aspects: improving market awareness, providing professional services, issuing relevant laws and regulations and regulating the development of the industry.
The influence of size effect on the electronic and elastic properties of diamond films with nanometer thickness
Creators: name: Chernozatonskii, Leonid A.
name: Sorokin, Pavel B.
name: Kuzubov, Alexander A.
name: Sorokin, Boris P.
name: Kvashnin, Alexander G.
name: Kvashnin, Dmitry G.
name: Avramov, Pavel V.
name: Yakobson, Boris I.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The atomic structure and physical properties of few-layered <111> oriented diamond nanocrystals (diamanes), covered by hydrogen atoms from both sides are studied using electronic band structure calculations. It was shown that energy stability linear increases upon increasing of the thickness of proposed structures. All 2D carbon films display direct dielectric band gaps with nonlinear quantum confinement response upon the thickness. Elastic properties of diamanes reveal complex dependence upon increasing of the number of <111> layers. All theoretical results were compared with available experimental data.
description: 16 pages, 5 figures, 3 tables
Band spectrum transformation and temperature dependences of thermoelectric power of Hg$_{1-x}$R$_x$Ba$_2$Ca$_2$Cu$_3$O$_{8+δ}$ system
Creators: name: Babych, O.
name: Gabriel, I.
name: Lutsiv, R.
name: Matviyiv, M.
name: Vasyuk, M.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Temperature dependences of thermoelectric power S(T) at $T>T_c$ of the Hg-based high temperature superconductors Hg$_{1-x}$R$_x$Ba$_2$Ca$_2$Cu$_3$O$_{8+δ}$ (R=Re, Pb) have been analyzed with accounting for strong scattering of charge carriers. Transformation of parameters of a narrow conducting band in the region of the Fermi level was studied. The existence of correlation between the effective bandwidth and the temperature of a superconductive transition $T_c$ is shown.
description: 6 pages, 4 figures
De obere Hauptmuschelkalk zwischen Murr und Würm
Creators: name: Losch, Wolfgang
Publisher: name: - NO PUBLISHER DEFINED -
Year: 1931

description: Jahreshefte des Vereins für Vaterländische Naturkunde in Württemberg : zugl. Jahrbuch d. Staatlichen Museums für Naturkunde in Stuttgart
description: Bd. 87, 1931
One Size Does Not Fit All! A Theoretical Model for Adaptive Tutoring Systems
Creators: name: Silviu, Apostol; Dan, Mihailescu; Livia, Petrescu; Alexandru, Sofronia
Publisher: name: Editura Universitara
Year: 2012
Subjects: subject: 0 Social sciences
subject: 37 Education
subject: 371 Instructional design
subject: 004:37 Elearning

description: We propose a theoretical model for this type of artificial intelligence used in customizing the delivery of the instruction. Details relating to user models, intelligent tutor modelling and algorithms for adjusting the tutor model are provided. This approach builds extensively on breakthroughs in intelligent tutoring systems, artificial intelligence, affective computing and evolutionary based studies of human communication. It goes beyond the state-of-the-art by adapting and applying the theoretical research and open-source multimodal emotion recognition frameworks to e-Learning environments.
Storage of carbon dioxide in depleted natural gas reservoirs as gas hydrate
Creators: name: Sun, Duo
Publisher: name: University of British Columbia
Year: 2016

description: More than 120 depleted natural gas reservoirs in Alberta, Canada have been identified as potential sites for CO₂ storage at temperature and pressure conditions at which CO₂ may form gas hydrate. Reservoir simulations presented in the literature have demonstrated the feasibility of storing CO₂ in such reservoirs. In this thesis, the injection of CO₂ in a laboratory size reservoir (packed bed of silica particles) serving as a physical model for a depleted reservoir was studied. The hypothesis was that injecting CO₂ into the reservoir at gas hydrate formation conditions will be beneficial in terms of increased CO₂ storage density. It is noted that CO₂ is stored not only as hydrate but also some is dissolved in the residual pore water (not converted to hydrate) and some as a gas in the remaining pore space. The results indicate that hydrate formation enhances the CO₂ storage density. The work also demonstrated that substances like tapioca starch added to the water in small quantities (1 wt %) delayed the onset of hydrate nucleation in the earlier stage but subsequently more CO₂ was stored as hydrate compared to the tapioca starch-free systems. The delay in nucleation decreases the risk to form a hydrate plug in the injection system. The injection of the CO₂-rich mixture (90 mol % CO₂/10 mol % N₂), which is a typical composition of a flue gas after CO₂ capture process, into a reservoir with CH4 (simulating residual natural gas) was also studied in the laboratory reservoir. It was found that the total CO₂ storage density (in hydrate, gaseous and dissolved state) decreased from 143 kg/m³ (the CO₂ injection into a CH₄ free reservoir) to 119 kg/m³. Finally, relevant phase equilibrium data were obtained in a constant volume high pressure vessel and by calorimetry. The results were found to be in good agreement with thermodynamic model calculated values within ± 40 kPa and ± 0.2 K, respectively.
Extending the boundaries of diaryliodonium reagents : expressing I-nucleophilicity of aryl iodides and metal-free preparation of sulfonium salts
Creators: name: Racicot, Léanne
Publisher: name: University of British Columbia
Year: 2016

description: Diaryliodonium salts are a well-established class of hypervalent iodine reagents and act as aryl group transfer agents towards nucleophiles. This work established the possibility of metathesis between diaryliodonium triflates and various iodoarenes. In an effort to further understand the factors that govern this process, λ³-iodanes containing 2-thienyl moieties were prepared. As a result, aryl iodides unable to undergo metatesis previously were found to be suitable nucleophiles as the metathesis favors diaryliodonium species where more nucleofugal aryl iodides, such as 2-iodothiophene, are expelled during the course of the reaction. In addition, we showed that copper catalysis was not necessary for the arylation of sulfides, selenides and tellurides. Indeed, thermal reactions between the chalcogenides and diaryliodonium triflates afforded the corresponding triarylchalcogenium salts in good yields. This is particularly significant for the preparation of the triaryltelluronium species, as only limited protocols for their preparation were known.
Über gangförmiges Auftreten von vulkanischem Material im Urach-Kirchheimer Vulkangebiet
Creators: name: Wager, Rudolf
Publisher: name: - NO PUBLISHER DEFINED -
Year: 1931

description: Jahreshefte des Vereins für Vaterländische Naturkunde in Württemberg : zugl. Jahrbuch d. Staatlichen Museums für Naturkunde in Stuttgart
description: Bd. 87, 1931
Cosmological Constraints on the Higgs Boson Mass
Creators: name: Popa, L. A.
name: Caramete, A.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: For a robust interpretation of upcoming observations from PLANCK and LHC experiments it is imperative to understand how the inflationary dynamics of a non-minimally coupled Higgs scalar field with gravity may affect the determination of the inflationary observables. We make a full proper analysis of the WMAP7+SN+BAO dataset in the context of the non-minimally coupled Higgs inflation field with gravity. For the central value of the top quark pole mass m_T=171.3 GeV, the fit of the inflation model with non-minimally coupled Higgs scalar field leads to the Higgs boson mass between 143.7 and 167 GeV (95% CL). We show that the inflation driven by a non-minimally coupled scalar field to the Einstein gravity leads to significant constraints on the scalar spectral index and tensor-to-scalar ratio when compared with the similar constraints tensor to from the standard inflation with minimally coupled scalar field. We also show that an accurate reconstruction of the Higgs potential in terms of inflationary observables requires an improved accuracy of other parameters of the Standard Model of particle physics as the top quark mass and the effective QCD coupling constant.
description: 23 pages, 4 figures, accepted for publication in The Astrophysical Journal
Designing a Model of Assistance Based Web Services in Interactive Learning Environment
Creators: name: Nadia, Beggari; T., Bouhadada
Publisher: name: Editura Universitara
Year: 2012
Subjects: subject: 0 Social sciences
subject: 37 Education
subject: 371 Instructional design
subject: 004:37 Elearning

description: This work takes place in the framework of the realization of a pedagogical assistance system in the domain of technology enhanced learning - TEL. In this context, we defend the thesis that it is  possible to integrate an interface with a pedagogical agent in an ILE - interactive learning environment - based on web service, which aims to provide pedagogical assistance adapted to the learner. Our approach is based on the analysis of the course of the learner, the system allows to represent, assist and analyze the evolution of a learning situation in order to detect the assistance status - blocking - learner, non completing tasks, etc.) it is based on the comparison between the actions of the learning - traces - and action to perform - the domain model - the traces provide knowledge about the learning situation with one of the web 2.0 reporting techniques. Our approach focuses on the representation of  the evolution of learning situations and on adaptive pedagogical agent that offers several types of pedagogical assistance .