cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Rebuilding the city from an ecological perspective
Creators: name: Testemale, Philip M.
Publisher: name: University of British Columbia
Year: 2008

description: The depth and severity of the planet's ecological and social crisis demands solutions and actions which exceed the capacity and ability of our dominant paradigm. Western culture -- its set of values, attitudes, ethics, institutions and traditions -- is inherently non-sustainable. This is especially true with regards to perceptions and interrelationships with nature. The city is a projection of both the positives of this culture as well as being its worst "ecological and social nightmare." This thesis addresses the city as the logical starting point for the project of sustainability; one which must ultimately entail nothing less than a complete paradigm shift. Planning, and more specifically urban design, have significant "leadership" roles to play in this movement. This thesis explores an ecological approach to design as an alternative to current theory and practice. By initially exploring ecological theories, a broad base is established which contrasts deep ecological thinking with the shallow environmentalism that preoccupies mainstream society. It is asserted that the radical theory and principles of Deep Ecology, Social Ecology and Bioregionalism demonstrate an ecological wisdom and perspective found to be absent in Eco-development and environmentalism. This difference is directly translatable to design theory. Neotraditionalism is argued as embodying a mainstream "reformist" approach to urban form. In contrast the process theory of Alexander et al and the theories and principles of the Ecocity movement provide radical prescriptions to urban form and societal issues. Variations on the concept of the urban village are found in each of the three design theories. These are examined as potential alternatives to existing single-family landscapes. A synthesis of this concept drawing upon the principles of Alexander et al. and Ecocity theory is called the urban eco-village. This is posited as a process and form prescription for community which can begin to reharmonize the relations between humans and other humans, and between humans and non-humans Action must be the touchstone of any paradigm shift. Hence, a series of strategies for implementation are explored. These present potential process and built form actions which emerge in the context of an ecological ethic. Accordingly, these coalesce around holistic design principles, the necessity to rebuild existing form (the concept of bricolage) and the concentration of these efforts at the local/community scale in a bottom-up fashion. The strategies point to the requisite need to break with the current fixation on form which characterizes mainstream design. An alternative design philosophy and ideology based on ecological understanding, information, and a more holistic definition of community within nature must be widely accepted and practiced if the goals of sustainability are to be brought closer to realization.
Ανάπτυξη επικοινωνίας στο τρίπτυχο, οικογένειας, μαθητή, εκπαιδευτικού σε πολυπολιτισμικές τάξεις
Creators: name: Συμονοπούλου, Ευθυμία Ιωάννη
Publisher: name: Aristotle University of Thessaloniki
Year: 2016
Subjects: Ανάπτυξη επικοινωνίας
Τρίπτυχο οικογένειας, μαθητή, εκπαιδευτικού
Σε πολυπολιτισμικές τάξεις
Communication development
Triptych family, student and teacher
multicultural school environment

description: Σε αυτή την νέα εποχή που χαρακτηρίζεται από πολιτισμική και εθνική ανομοιογένεια, η γνώση για τις δυσκολίες και τις ιδιαίτερες ανάγκες των παλιννοστούντων και των αλλοδαπών μαθητών/τριών στο ελληνικό εκπαιδευτικό σύστημα αποτελεί βασική προϋπόθεση για την κάλυψη των αναγκών τους σε γνωστικό και σε ψυχολογικό επίπεδο αλλά και την προσαρμογή τους σε μια κοινωνία που συνεχώς μεταβάλλεται. Η εργασία αυτή, βασιζόμενη στην διαπολιτισμική και πολυπολιτισμική βιβλιογραφία, επιδιώκει την «εξερεύνηση» των τρόπων και των τεχνικών ανάπτυξης της επικοινωνίας, ώστε ο δάσκαλος να λειτουργήσει ως διαπολιτισμικός μεσολαβητής. Η προσέγγιση του θέματος υλοποιείται εξετάζοντας τις παραμέτρους του θέματος ξεχωριστά (πολιτισμική ετερότητα, εκπαίδευση, ελληνική πραγματικότητα, θεσμικό πλαίσιο, οι ξεχωριστοί ρόλοι κάθε τομέα του τρίπτυχου μαθητής-σχολείο-οικογένεια) μέσα από διάφορες οπτικές, αλλά κυρίως μέσω της θεωρίας των κοινωνικών συστημάτων του N. Luhmann. Επίσης, μελετάται ο ρόλος της επικοινωνίας στην άρση των παιδαγωγικών-εκπαιδευτικών προβλημάτων, με στόχο την διατύπωση προτάσεων διδακτικών παρεμβάσεων για ανάπτυξη καλύτερης επικοινωνίας-αλληλεπίδρασης σε μια πολυπολιτισμική τάξη.
description: In this new era, which is characterized by cultural and ethnic diversity, the awareness of the difficulties and special needs of repatriated and foreign students in the Greek education system is a prerequisite for meeting their needs in cognitive and psychological terms, but also for their adaptation to a society that is constantly changing. The specific thesis, based on intercultural and multicultural bibliography, seeks to "explore" the ways and the techniques of the development of communication techniques, so that the teacher will be able to act as intercultural mediator. The subject approach is implemented by considering the issue parameters separately (cultural diversity, education, Greek reality, institutional framework, the different roles of each sector of the triptych student-school-family) through various perspectives, but mainly through the systemic theory of N. Luhmann. Also, the role of communication in obviating pedagogical-educational problems is studied, aiming the formulation of proposals regarding teaching interventions, in order to develop a better communication-interaction in a multicultural classroom.
CMB anisotropies due to cosmological magnetosonic waves
Creators: name: Kahniashvili, Tina
name: Ratra, Bharat
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We study scalar mode perturbations (magnetosonic waves) induced by a helical stochastic cosmological magnetic field and derive analytically the corresponding cosmic microwave background (CMB) temperature and polarization anisotropy angular power spectra. We show that the presence of a stochastic magnetic field, or an homogeneous magnetic field, influences the acoustic oscillation pattern of the CMB anisotropy power spectrum, effectively acting as a reduction of the baryon fraction. We find that the scalar magnetic energy density perturbation contribution to the CMB temperature anisotropy is small compared to the contribution to the CMB $E$-polarization anisotropy.
description: 17 pages, references added, version accepted for publication in Phys. Rev. D
Πλεόνασμα Προσόντων και Εργασιακή Ανία: Ο διαμεσολαβητικός ρόλος του Νοήματος της Εργασίας
Creators: name: Τσελιοπούλου, Βιργινία Γεωργίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2016
Subjects: Πλεόνασμα Προσόντων
Εργασιακή Ανία
Νόημα Εργασίας
Overqualification
Work- Related Boredom
Job Meaningfulness

description: Η παρούσα διπλωματική εργασία μελετά το φαινόμενο του πλεονάσματος προσόντων, το οποίο λαμβάνει χώρα όταν ο εργαζόμενος έχει περισσότερα προσόντα από αυτά που απαιτούνται από τη θέση εργασίας του. Το πλεόνασμα προσόντων έχει πολλές επιπτώσεις, οι περισσότερες των οποίων είναι αρνητικές. Στην έρευνά αυτή εξετάζεται η σχέση του πλεονάσματος προσόντων με την ανία στην εργασία, και ο διαμεσολαβητικός ρόλος του νοήματος της εργασίας στη σχέση αυτή. Αρχικά, μελετάται το θεωρητικό υπόβαθρο του πλεονάσματος προσόντων, και των δύο άλλων μεταβλητών του μοντέλου, της ανίας και του νοήματος της εργασίας. Στη συνέχεια, αναφέρεται η μεθοδολογία που ακολουθήθηκε για τη συλλογή του δείγματός (n= 211) και τη διεξαγωγή της έρευνας. Έπειτα, αναλύονται τα αποτελέσματά της έρευνας. Τα ευρήματα επιβεβαιώνουν της υποθέσεις μας, αποδεικνύουν δηλαδή, πως το πλεόνασμα προσόντων έχει αρνητική σχέση με το νόημα εργασίας. Επιπλέον, επιβεβαιώνουν πως το νόημα εργασίας σχετίζεται αρνητικά με την εργασιακή ανία, και επεξηγεί τη σχέση του πλεονάσματος προσόντων και της εργασιακής ανίας. Τέλος, αναφέρονται οι περιορισμοί της έρευνας, δίνονται πρακτικές συμβουλές στους οργανισμούς και τα διοικητικά στελέχη για την αποφυγή των αρνητικών αποτελεσμάτων του πλεονάσματος προσόντων, και γίνονται προτάσεις για μελλοντική έρευνα.
description: The present thesis examines the phenomenon of overqualification, which occurs when an employee has more qualifications than those required for his/ her job. Overqualification has multiple impacts most of which are negative. In our study we investigate the effect of overqualification on boredom in the working environment, and the mediating role of job meaningfulness in this relationship. Initially, a literature review of overqualification, boredom and job meaningfulness is made. Then, the methodology implemented for sample collection (n= 211) and research conduct is indicated. After that, the results of the research are analyzed. The findings of the research supported our claim. There is a negative correlation between overqualification and job meaningfulness. There is, also, a negative correlation between job meaningfulness and work- related boredom and job meaningfulness mediates the relationship between overqualification and work- related boredom. Finally, the limitations of the research are stated, practical advice to organizations and managers on how to avoid the negative effects of overqualification is given, and recommendations for future research are made.
Προσομοίωση και Μοντελοποίηση Βιολογικού Δικτύου Εκπομπής
Creators: name: Μαυριδόπουλος, Στάθης Βασιλείου
Publisher: name: Aristotle University of Thessaloniki
Year: 2016
Subjects: προσομοίωση και μοντελοποίηση
βιολογικό δίκτυο
δίκτυο εκπομπής
modeling and simulation
biological network
broadcast network

description: Στην παρούσα εργασία παρουσιάστηκε ένα πρότυπο σύστημα επικοινωνίας το οποίο προτείνει την χρήση βακτηρίων ως μέσο μετάδοσης σήματος. Ένα τέτοιο σύστημα θα μπορούσε να δώσει λύσεις σε εφαρμογές όπου υπάρχει απαίτηση για βιοσυμβατότητα ή χαμηλή κατανάλωση ενέργειας. Για την επίδειξη και μελέτη του συστήματος υλοποιήθηκε προσομοιωτής και πραγματοποιήθηκαν πειράματα. Τα πειράματα ανέδειξαν την αξία του φαινομένου του χημειοτακτισμού των κυττάρων και την επιρροή των παραμέτρων της απόστασης και του πλήθους βακτηρίων ανά παλμό στο λαμβανόμενο σήμα.
description: In this thesis we present a novel communication system where bacteria are used as information transfer medium. Such a system could provide solutions in applications with the requirement for biocompatibility or low power consumption. In order to demonstrate and investigate the properties of this system a simulator was implemented and experiments were performed. The experiments highlighted the value of chemotaxis phenomenon and the influence to the received signal of the parameters of distance and number of bacteria per pulse.
Stochastic nonlinear Schrodinger equations driven by a fractional noise - Well posedness, large deviations and support
Creators: name: Gautier, Eric
Publisher: name: arXiv
Year: 2006
Subjects: subject: Probability (math.PR)
subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 60F10; 60H15; 35Q55

description: We consider stochastic nonlinear Schrodinger equations driven by an additive noise. The noise is fractional in time with Hurst parameter H in (0,1). It is also colored in space and the space correlation operator is assumed to be nuclear. We study the local well-posedness of the equation. Under adequate assumptions on the initial data, the space correlations of the noise and for some saturated nonlinearities, we prove a sample path large deviations principle and a support result. These results are stated in a space of exploding paths which are Holder continuous in time until blow-up. We treat the case of Kerr nonlinearities when H > 1/2.
Η επίδραση ενός προγράμματος διατάσεων στην μυική σκληρότητα του τετρακεφάλου σε άτομα με οστεοαρθρίτιδα
Creators: name: Παρίκου, Χριστίνα Κωνσταντίνου
Publisher: name: Aristotle University of Thessaloniki
Year: 2016
Subjects: σκληρότητα της άρθρωσης
οστεοαρθρίτιδα γόνατος
παθητική διάταση
joint stiffness
knee osteoarthritis
passive streching

description: Η οστεοαρθρίτιδα (ΟΑ) είναι η πιο κοινή μορφή εκφυλιστικής αρθρίτιδας προσβάλλει το 10-20% των ανθρώπων άνω των 65 ετών και στις Ηνωμένες Πολιτείες της Αμερικής 40 εκατομμύρια άνθρωποι περίπου πάσχουν από οστεοαρθρίτιδα. Σκοπός της παρούσας μελέτης ήταν η επίδραση ενός πρωτοκόλλου άμεσης παρέμβασης με παθητική διάταση στον τετρακέφαλο μυ σε άτομα με οστεοαρθρίτιδα γόνατος. Το δείγμα αποτέλεσαν 10 άτομα, μέσο όρο ηλικίας 55-60 χρονών και 70 κιλών με οστεοαρθρίτιδα γόνατος χωρίς να έχουν χειρουργηθεί. Η μέθοδος που χρησιμοποιήθηκε είναι ένα πρωτόκολλο παθητικής διάτασης τετρακεφάλου από πρηνή θέση ασθενούς στο δυναμόμετρο CYBEX 3 σετ, 60’’ κράτημα και 1 λεπτό ξεκούραση ανάμεσα στα σετ. Τα αποτελέσματα έδειξαν σημαντική αύξηση στο εύρος κίνησης, όπου p > 0.05 (στατιστική σημαντικότητα) μετά την παρέμβαση καθώς διαπιστώθηκαν διαφορές στη μέση ροπή και τη γωνία μέγιστης ροπής. Τέλος, η σκληρότητα του τετρακεφάλου μετά την παρέμβαση παρουσίασε μείωση όπου p > 0.05, συνεπώς βελτιώθηκε η λειτουργικότητα της άρθρωσης.
description: Osteoarthritis (OA) is the most common of degenerative arthritis that affects 10-20% people over age 65. About 40 million people suffer from osteoarthritis in the United States. The purpose of this study is to compare the effects of a passive stretching intervention on knee. A total of 10 participants 70 kg were recruited (males and females) with osteoarthritis of the knee joint without surgery intervention. The patients were at prone position using the Cybex dynamometer, three 60-second stretches with 60 seconds of rest between stretches were applied to the quadriceps muscle group. The results showed a significant increase in range of motion p<0,05 and decrease the joint stiffness, p<0,05 after the intervention. Finally, patients with osteoarthritis of the knee are able to demonstrate immediate beneficial adaptations to a stretching intervention. This is important as stretching is often used in preparation for exercise programmes.
Gap solitons supported by optical lattices in photorefractive crystals with asymmetric nonlocality
Creators: name: Xu, Zhiyong
name: Kartashov, Yaroslav V.
name: Torner, Lluis
Publisher: name: arXiv
Year: 2006
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We address the impact of asymmetric nonlocal diffusion nonlinearity on the properties of gap solitons supported by photorefractive crystal with an imprinted optical lattice. We reveal how the asymmetric nonlocal response alters the domains of existence and the stability of solitons originating from different gaps. We find that in such media gap solitons cease to exist above a threshold of the nonlocality degree. We discuss how the interplay between nonlocality and lattice strength modifies the gap soliton mobility.
description: 14 pages, 4 figures, to appear in Optics Letters
Рынок труда в лабиринтах современности
Creators: name: Богатырёва, Марина Руслановна
name: Смирнов, Антон Юрьевич
Publisher: name: Zenodo
Year: 2023
Subjects: труд
рынок труда
образование
квалификация
диплом специалиста
трудоустройство

description: Освещена структура занятых за III квартал 2022 годы как по половозрастным категориям, так и по уровню образования; далее, внимание было уделено анализу соискателей работы на рынке труда, согласно онлайн-мониторингу Центра научных исследований, в сфере профориентации и психологии труда с использованием специальной лингвистической онтологии Магуча и по данным портала «Работа в России»; дана оценка зарплатным ожиданиям соискателей, как оказалось, что она в вакансиях работодателей совсем не соответствует их ожиданиям.
User Requirements and Analysis of Preeclampsia Detection done through a Smart Bracelet
Creators: name: Marin, Iuliana
name: Vasilateanu, Andrei
name: Pavaloiu, Bujor
name: Goga, Nicolae
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computers and Society (cs.CY)
subject: FOS: Computer and information sciences

description: Medical students along with the medical staff have to monitor the state of the patients by using modern devices which have to offer precise results in a short amount of time, so that the intervention to be done as soon as possible. E-learning systems for blood pressure monitoring are used and new methods of patient observation, evaluation and treatment are applied compared to classical intervention. Based on this, medical students can improve their knowledge for the practical training. In the medical activities specialized devices occupy an important place. A device that can monitor the blood pressure is a smart bracelet that incorporates a pressure sensor along the wrist for continuous recording of blood pressure values. This enables the prediction of the emergency disorders using a decision support system. It facilitates the learning of new intervention approaches and boosts the responsiveness among learners. According to the World Health Organization, hypertensive disorders affect about 10% of pregnant women worldwide and are an important cause of disability and long-term death among mothers and children. This paper is based on a survey completed by persons of different ages and having various specialization domains regarding the use of smart bracelets for detecting preeclampsia. The aim is to decide upon its popularity among people and to determine the user requirements. The pregnant women will be constantly monitored, doctors can update the diagnosis of the patient. The medical students can learn from the critical situations and benefit from these cases while learning. The results of the survey showed that most of the interviewed persons consider the existence of such a device to be very useful, mostly the female individuals would feel more comfortable to have their blood pressure monitored during pregnancy.
Crossover from impurity-induced ordered phase to uniform antiferromagnetic phase under hydrostatic pressure in the doped spin-gap system TlCu$_{1-x}$Mg$_x$Cl$_3$
Creators: name: Imamura, H.
name: Ono, T.
name: Goto, K.
name: Tanaka, H.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Magnetic phase transition under hydrostatic pressure in TlCu$_{0.988}$Mg$_{0.012}$Cl$_3$ was investigated by magnetization measurements. The parent compound TlCuCl$_3$ is a coupled spin dimer system, which undergoes a pressure-induced quantum phase transition from a gapped ground state to an antiferromagnetic state at $P_{\rm c} = 0.42$ kbar due to the shrinkage of the gap. At ambient pressure, the present doped system exhibits impurity-induced magnetic ordering at $T_{\rm N}=2.5$ K. With increasing pressure, $T_{\rm N}$ increases. This is because the effective exchange interaction $J_{\rm eff}$ between unpaired spins is enhanced by the shrinkage of the gap. With a further increase in pressure, the present system undergoes a phase transition to a uniform antiferromagnetic phase due to the closing of the triplet gap in the intact dimers. The crossover from the impurity-induced ordered phase to the uniform antiferromagnetic phase occurs at $P \simeq 1.3$ kbar.
description: 7 pages, 10 figures, submitted to Physical Review B
Performance and uniformity of a kilo-pixel array of Ti/Au transition-edge sensor microcalorimeters
Creators: name: Taralli, E.
name: D'Andrea, M.
name: Gottardi, L.
name: Nagayoshi, K.
name: Ridder, M. L.
name: de Wit, M.
name: Vaccaro, D.
name: Akamatsu, H.
name: Bruijn, M. P.
name: Gao, J. R.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: Uniform large transition-edge sensor (TES) arrays are fundamental for the next generation of X-ray space observatories. These arrays are required to achieve an energy resolution $ΔE$ < 3 eV full-width-half-maximum (FWHM) in the soft X-ray energy range. We are currently developing X-ray microcalorimeter arrays for use in future laboratory and space-based X-ray astrophysics experiments and ground-based spectrometers. In this contribution we report on the development and the characterization of a uniform 32$\times$32 pixel array with 140$\times$30 $μ$m$^2$ Ti/Au TESs with Au X-ray absorber. We report upon extensive measurements on 60 pixels in order to show the uniformity of our large TES array. The averaged critical temperature is $T_\mathrm{c}$ = 89.5$\pm$0.5 mK and the variation across the array ($\sim$1 cm) is less than 1.5 mK. We found a large region of detector's bias points between 20\% and 40\% of the normal-state resistance where the energy resolution is constantly lower than 3 eV. In particular, results show a summed X-ray spectral resolution $ΔE_\mathrm{FWHM}$ = 2.50$\pm$0.04 eV at a photon energy of 5.9 keV, measured in a single-pixel mode using a frequency domain multiplexing (FDM) readout system developed at SRON/VTT at bias frequencies ranging from 1 to 5 MHz. Moreover we compare the logarithmic resistance sensitivity with respect to temperature and current ($α$ and $β$ respectively) and their correlation with the detector's noise parameter $M$, showing an homogeneous behaviour for all the measured pixels in the array.
The Power Spectrum of Supersonic Turbulence in Perseus
Creators: name: Padoan, Paolo
name: Juvela, Mika
name: Kritsuk, Alexei
name: Norman, Michael L.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We test a method of estimating the power spectrum of turbulence in molecular clouds based on the comparison of power spectra of integrated intensity maps and single-velocity-channel maps, suggested by Lazarian and Pogosyan. We use synthetic 13CO data from non-LTE radiative transfer calculations based on density and velocity fields of a simulation of supersonic hydrodynamic turbulence. We find that the method yields the correct power spectrum with good accuracy. We then apply the method to the Five College Radio Astronomy Observatory 13CO map of the Perseus region, from the COMPLETE website. We find a power law power spectrum with slope beta=1.81+-0.10. The values of beta as a function of velocity resolution are also confirmed using the lower resolution map of the same region obtained with the AT&T Bell Laboratories antenna. Because of its small uncertainty, this result provides a useful constraint for numerical codes used to simulate molecular cloud turbulence.
description: 4 pages, 3 figures. ApJ Letters, in press
Longitudinal impedance of a prototype kicker magnet system
Creators: name: Tran, Hy J.
Publisher: name: University of British Columbia
Year: 2008

description: The longitudinal impedance of a prototype kicker magnet system for the proposed KAON Factory was measured from 0.3 to 200 MHz using the coaxial wire method. The method consists of transforming the aperture of the kicker magnet under test into a coaxial structure by inserting a central conductor so that the transmission coefficient can be measured. The longitudinal impedance was calculated from the transmission coefficient. The measurement was performed in two frequency ranges. From 0.3 to 50 MHz the magnet was transformed into a 50 Ω coaxial line, and from 45 to 200 MHz into a 180 Ω coaxial line. TSD calibration of the measurement assembly was performed in the higher frequency range while HP calibration of the test cables was performed in the lower frequency range. Resonances in the longitudinal impedance are present below the cut-off frequency (30 MHz) of the magnet. The effects on the impedance of a speed-up network and a saturating inductor, installed on the input to the kicker magnet to improve its kick performance, were determined. It was found that a speed-up network damped only the high-frequency resonances whereas a saturating inductor reduced their number. Above the cut-off frequency, other components of the magnet system, such as the speed-up network, the saturating inductor and the cables, were found to have negligible influence on the impedance. The maximum real longitudinal impedance of the magnet was measured to be 32 Ω. The total contribution to the Booster ring is 425 Ω and to the Driver ring is 1184 Ω, respectively. These contributions are small compared with that of rf cavities which have typical values of 10 kΩ. Hence the contribution of kicker magnets is negligible and furthermore any longitudinal instabilities due to kicker magnets can be damped with existing damping systems for the rf cavities except, perhaps, for short bunch (1 ns) operations.
Phase Transitions in Operational Risk
Creators: name: Anand, Kartik
name: Kühn, Reimer
Publisher: name: arXiv
Year: 2006
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Risk Management (q-fin.RM)
subject: FOS: Physical sciences
subject: FOS: Economics and business

description: In this paper we explore the functional correlation approach to operational risk. We consider networks with heterogeneous a-priori conditional and unconditional failure probability. In the limit of sparse connectivity, self-consistent expressions for the dynamical evolution of order parameters are obtained. Under equilibrium conditions, expressions for the stationary states are also obtained. The consequences of the analytical theory developed are analyzed using phase diagrams. We find co-existence of operational and non-operational phases, much as in liquid-gas systems. Such systems are susceptible to discontinuous phase transitions from the operational to non-operational phase via catastrophic breakdown. We find this feature to be robust against variation of the microscopic modelling assumptions.
description: 13 pages, 7 figures. Accepted in Physical Review E
S0 galaxies in Fornax: data and kinematics
Creators: name: Bedregal, A. G.
name: Aragón-Salamanca, A.
name: Merrifield, M. R.
name: Milvang-Jensen, B.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have obtained long-slit spectroscopy for a sample of 9 S0 galaxies in the Fornax Cluster using the FORS2 spectrograph at the 8.2m ESO VLT. From these data, we have extracted the kinematic parameters, comprising the mean velocity, velocity dispersion and higher-moment H3 and H4 coefficients, as a function of position along the major axes of these galaxies. Comparison with published kinematics indicates that earlier data are often limited by their lower signal-to-noise ratio and relatively poor spectral resolution. The greater depth and higher dispersion of the new data mean that we reach well beyond the bulges of these systems, probing their disk kinematics in some detail for the first time. Qualitative inspection of the results for individual galaxies shows that they are not entirely simple systems, perhaps indicating a turbulent past. Nonetheless, we are able to derive reliable circular velocities for most of these systems, which points the way toward a study of their Tully-Fisher relation. This study, along with an analysis of the stellar populations of these systems out to large galactocentric distances, will form the bases of future papers exploiting these new high-quality data, hopefully shedding new light on the evolutionary history of these systems.
description: 17 pages, 13 figures, 3 tables, accepted in MNRAS
Choices made by women in pregnancy, birth and the early postnatal period, after a previous traumatic birth
Creators: name: Greenfield, Mari
Publisher: name: figshare
Year: 2021
Subjects: subject: 111799 Public Health and Health Services not elsewhere classified
subject: FOS: Health sciences

description: Background: A significant number of women experience childbirth as traumatic, with long-term negative sequelae. Little is known about the choices women make in subsequent pregnancy(s)/birth(s). Understanding the choices women make, and why, is necessary to offer appropriate support to women traumatised by their previous birth(s).    Question: What choices do women make in the perinatal period, when they have previously experienced a traumatic birth? Method: Nine pregnant UK-based women who had previously experienced a traumatic birth were recruited to a longitudinal feminist grounded theory study, via online pregnancy and parenting forums. Interviews were carried out in early pregnancy, pre-birth, and postnatally (27 interviews). Results: Findings suggest that women gathered and analysed information from a variety of sources, often at an early stage (even pre-conception) to make choices about birth. Women made decisions throughout pregnancy in order to have the birth they wanted. Participants expressed difficulty in trusting healthcare professionals because of their previous experiences, and needed recognition that trust had to be rebuilt. Each woman located the power to support her birthplan in someone different. Anticipating a lack of support for their plans, women prepared for appointments as though each would be a battle. When each woman met the person whom she believed could agree her choices, if they offered support for her plans, she experienced relief. If that support was denied, it was devastating. If women were able to develop trusting relationships with healthcare professionals during pregnancy, this birth was likely to be a positive experience. Similarly, support from partners was an indicator for a positive birth experience. Conclusions: This thesis explores relationships between women, information, birthplans and trust, and proposes a care pathway for women who have previously experienced a traumatic birth. The care pathway advocates continuity of care from a single appropriate carer, who provides information, and supports the early formulation of a birthplan.
Distance traveled by random walkers before absorption in a random medium
Creators: name: Dean, David S.
name: Sire, Clément
name: Sopik, Julien
Publisher: name: arXiv
Year: 2006
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We consider the penetration length $l$ of random walkers diffusing in a medium of perfect or imperfect absorbers of number density $ρ$. We solve this problem on a lattice and in the continuum in all dimensions $D$, by means of a mean-field renormalization group. For a homogeneous system in $D>2$, we find that $l\sim \max(ξ,ρ^{-1/2})$, where $ξ$ is the absorber density correlation length. The cases of D=1 and D=2 are also treated. In the presence of long-range correlations, we estimate the temporal decay of the density of random walkers not yet absorbed. These results are illustrated by exactly solvable toy models, and extensive numerical simulations on directed percolation, where the absorbers are the active sites. Finally, we discuss the implications of our results for diffusion limited aggregation (DLA), and we propose a more effective method to measure $l$ in DLA clusters.
description: Final version: also considers the case of imperfect absorbers
Extraction of |Vub| with Reduced Dependence on Shape Functions
Creators: name: Golubev, V. B.
name: Luth, V. G.
name: Skovpen, Yu. I.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Using BaBar measurements of the inclusive electron spectrum in B->X_u e nu decays and the inclusive photon spectrum in B->X_s gamma decays, we extract the magnitude of the CKM matrix element Vub. The extraction is based on theoretical calculations designed to reduce the theoretical uncertainties by exploiting the assumption that the leading shape functions are the same for all b->q transitions (q is a light quark). The results agree well with the previous analysis, have indeed smaller theoretical errors, but are presently limited by the knowledge of the photon spectrum and the experimental errors on the lepton spectrum.
description: 7 pages, 5 figures, 4 tables. The version submitted to Phys. Rev. D
Χωρική ανάλυση ανταγωνισμού σε δεδομένα συναλλαγών καταστημάτων λιανικής
Creators: name: Κακοσίμου, Δήμητρα Δημητρίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2016
Subjects: Επιχειρηματική Ευφυΐα
Γεωγραφικά Πληροφοριακά Συστήματα
Χωρική Ανάλυση
Business Intelligence
Geographical Information Systems
Spatial Analysis

description: Η παρούσα εργασία αποτελεί μια μελέτη των μεθόδων σχεδίασης και ανάπτυξης συστημάτων Επιχειρηματικής Ευφυΐας (BI), καθώς και την ανάλυση των Γεωγραφικών Πληροφοριακών Συστημάτων (GIS). Σκοπός της εργασίας είναι να αναδειχτεί η σημασία των εφαρμογών BI και GIS στις επιχειρήσεις. Αρχικά, γίνεται μια θεωρητική αναφορά στην ορολογία, τα χαρακτηριστικά και την μεθοδολογία που ακολουθείται στη σχεδίαση και την ανάπτυξη συστημάτων Επιχειρηματικής Ευφυΐας και Γεωγραφικών Πληροφοριακών Συστημάτων. Αναλύεται η αποτελεσματική χρήση των παραπάνω συστημάτων στην διαδικασία λήψης αποφάσεων από τα διοικητικά στελέχη των επιχειρήσεων, τα στοιχεία από τα οποία αποτελούνται, καθώς και τα τεχνολογικά εργαλεία που χρησιμοποιούν. Στην συνέχεια, γίνεται η περιγραφή και ανάλυση της μεθοδολογίας που χρησιμοποιήθηκε για την ανάπτυξη της εφαρμογής που υλοποιήθηκε στα πλαίσια της διπλωματικής εργασίας, χρησιμοποιώντας τα χαρακτηριστικά των BI και τις μεθόδους των GIS για την ανάπτυξη μεθόδων χωρικής ανάλυσης του ανταγωνισμού σε δεδομένα συναλλαγών σε καταστήματα λιανικής πώλησης.
description: This project is a design and development study concerning the methods of Business Intelligence systems (BI), and the analysis of Geographic Information Systems (GIS). The aim is to highlight the importance of BI and GIS applications in business field. Initially, there is a theoretical reference to terminology, characteristics and methodology that is used by the design and development of Business Intelligence systems and Geographical Information Systems. We analyze the effective use of these systems during the decision-making process of businesses, the elements of which these systems are composed and the technological tools which they use. In the final chapter, we describe and analyze the methodology which was used to develop the BI application that was implemented as part of this thesis, using the characteristics of BI and methods of GIS for the development methods of spatial analysis of competition in retail stores.
Fashioning identity : the Jan de Wasser prints and the Burgher class
Creators: name: Vanhaelen, Engeline Christine
Publisher: name: University of British Columbia
Year: 2008

description: In the mid-seventeenth century, printers in the city of Amsterdam began to publish and disseminate prints which depicted, with images and words, the fictional story of Jan de Wasser. Jan de Wasser is a hen-pecked husband: his wife Griet wears the pants in their household, and forces Jan to carry out numerous domestic tasks. In this way, Jan takes on the prescribed role of the seventeenth-century Dutch housewife. The Jan de Wasser prints became extremely popular with the Dutch public: numerous printers put out their own versions of the story, and the prints maintained their popularity until the beginning of the twentieth century. This thesis seeks to explore the complex relationship between the Jan de Wasser prints and their mainly middle class Dutch audience, within the social and cultural context of seventeenth-century Amsterdam. Taking the prints themselves as a starting point for this study, I have analyzed the forms of the prints: their layout, images and texts, for insights as to how they would have been understood by a seventeenth-century public. The Jan de Wasser prints draw on previous cultural traditions and transform these traditions by investing them with domestic and didactic meanings. As the prints were issued by different printers, they were edited, reworked and injected with new uses and new meanings. Because of their production, contradictory meanings coexist within the forms. The themes of the prints link them to concepts of marriage, women's roles, the education of children and the importance of the home and family which were being reworked in the late seventeenth century. This thesis will examine connections between the Jan de Wasser prints and shifting understandings of the importance of domestic life in defining both the individual and the nation. The contradictory meanings inherent in the prints reveal the struggle involved in redefining these issues. While they present the reader with the dominant ideologies of the day, the prints also retain vestiges of previous ways of life. In the final analysis, the conflicting meanings of the Jan de Wasser prints allow for various readings and uses of the prints. The cultural consumption of the prints indicates a range of subject positions which were possible in the social and cultural context of seventeenth-century Amsterdam. Thus the Jan de Wasser prints played an important role in constructing middleclass identity at this historical moment.
Machine Learning Detection Algorithm for Large Barkhausen Jumps in Cluttered Environment
Creators: name: Alimi, Roger
name: Ivry, Amir
name: Fisher, Elad
name: Weiss, Eyal
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: Modern magnetic sensor arrays conventionally utilize state of the art low power magnetometers such as parallel and orthogonal fluxgates. Low power fluxgates tend to have large Barkhausen jumps that appear as a dc jump in the fluxgate output. This phenomenon deteriorates the signal fidelity and effectively increases the internal sensor noise. Even if sensors that are more prone to dc jumps can be screened during production, the conventional noise measurement does not always catch the dc jump because of its sparsity. Moreover, dc jumps persist in almost all the sensor cores although at a slower but still intolerable rate. Even if dc jumps can be easily detected in a shielded environment, when deployed in presence of natural noise and clutter, it can be hard to positively detect them. This work fills this gap and presents algorithms that distinguish dc jumps embedded in natural magnetic field data. To improve robustness to noise, we developed two machine learning algorithms that employ temporal and statistical physical-based features of a pre-acquired and well-known experimental data set. The first algorithm employs a support vector machine classifier, while the second is based on a neural network architecture. We compare these new approaches to a more classical kernel-based method. To that purpose, the receiver operating characteristic curve is generated, which allows diagnosis ability of the different classifiers by comparing their performances across various operation points. The accuracy of the machine learning-based algorithms over the classic method is highly emphasized. In addition, high generalization and robustness of the neural network can be concluded, based on the rapid convergence of the corresponding receiver operating characteristic curves.
description: Accepted to IEEE Magnetics Letters
Mechanism of the close-to-threshold production of the eta meson
Creators: name: Czyzykiewicz, R.
name: Moskal, P.
name: Adam, H. -H.
name: Budzanowski, A.
name: Czerwinski, E.
name: Gil, D.
name: Grzonka, D.
name: Hodana, M.
name: Janusz, M.
name: Jarczyk, L.
name: Kamys, B.
name: Khoukaz, A.
name: Kilian, K.
name: Klaja, P.
name: Lorentz, B.
name: Oelert, W.
name: Piskor-Ignatowicz, C.
name: Przerwa, J.
name: Rejdych, B.
name: Ritman, J.
name: Sefzick, T.
name: Siemaszko, M.
name: Smyrski, J.
name: Taeschner, A.
name: Ulbrich, K.
name: Winter, P.
name: Wolke, M.
name: Wuestner, P.
name: Zipper, W.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Measurements of the analysing power for the p(pol)p --> ppeta reaction have been performed in the close-to-threshold energy region at beam momenta of p_{beam}=2.010 and 2.085 GeV/c, corresponding to excess energies of Q=10 and 36 MeV, respectively. The determined analysing power is essentially consistent with zero implying that the eta meson is produced predominantly in the s-wave at both excess energies. The angular dependence of the analysing power, combined with the hitherto determined isospin dependence of the total cross section for the eta meson production in nucleon-nucleon collisions, reveal a statistically significant indication that the excitation of the nucleon to the S_{11}(1535) resonance, the process which intermediates the production of the eta meson, is predominantly due to the exchange of the pi meson between the colliding nucleons.
description: 4 pages, 4 figures, content added
Torsional Strain of TaS$_3$ Whiskers on the Charge-Density Waves Depinning
Creators: name: Pokrovskii, V. Ya.
name: Zybtsev, S. G.
name: Gorlova, I. G.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We find that electric current $I$ exceeding the threshold value results in torsion deformation of o-TaS$_3$ samples with one contact freely suspended. The rotation angle, $δϕ$, of the free end achieves several degrees and exhibits hysteresis as a function of $I$. The sign of $δϕ$ depends on the $I$ polarity; a polar axis along the conducting chains (the {\it c}-axis) is pointed out. We associate the effect with surface shear of the charge-density waves (CDW) coupled to the crystal shear. The current-induced torsional strain could be treated in terms of enormous piezoelectric coefficients ($>10^{-4}$ cm/V) corresponding to shear. In essence, TaS$_3$ appears to be a ready torsional actuator based on the unique intrinsic property of the CDW.
description: 5 pages, 4 figures
$D^* D_s K$ and $D_s ^* D K$ vertices in a QCD Sum Rule approach
Creators: name: Bracco, M. E.
name: Cerqueira, A.
name: Chiapparini, M.
name: Lozea, A.
name: Nielsen, M.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We calculate the strong form factors and coupling constants of $ D^* D_s K$ and $D_s^* D K$ vertices using the QCD sum rules technique. In each case we have considered two different cases for the off-shell particle in the vertex: the ligthest meson and one of the heavy mesons. The method gives the same coupling constant for each vertex. When the results for different vertices are compared, they show that the SU(4) symmetry is broken by around 40%.
description: 10 pages, 8 figures. Submitted to Phys. Lett. B
Theory of resonant inelastic x-ray scattering at the K edge in La$_2$CuO$_4$ - Multiple scattering effects -
Creators: name: Igarashi, Jun-ichi
name: Nomura, Takuji
name: Takahashi, Manabu
Publisher: name: arXiv
Year: 2006
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We develop a theory of resonant inelastic x-ray scattering (RIXS) at the $K$ edge in La$_2$CuO$_4$ on the basis of the Keldysh Green's function formalism. In our previous analysis (Phys. Rev. B 71, 035110 (2005)), the scattering by the core-hole potential was treated within the Born approximation, and a crude-model density of states was used for the $4p$ band. We improve the analysis by taking account of the multiple scattering in Cu3d-O$2p$ bands and by using a realistic $4p$ DOS obtained from a band calculation. The multiple scattering effect is evaluated with the use of the time representation developed by Nozières and De Dominicis. It is found that the multiple scattering effect makes the $K$-edge peak in the absorption coefficient shift to the lower energy region as a function of photon energy, that is, the photon energy required to excite the $1s$ electron to the $K$-edge peak reduces. It is also found that the multiple-scattering effect does not change the two-peak structure in the RIXS spectra but modifies slightly the shape as a function of energy loss. These findings suggests that the multiple scattering effect could mainly be included into a renormalization of the core-level energy and partly justify the Born approximation, leading to a future application to the RIXS in three-dimensional systems.
description: revised version with extended discussion, 24 pages, 12 figures, accepted for PRB
Capacity Analysis of Public Blockchain
Creators: name: Wang, Xu
name: Ni, Wei
name: Zha, Xuan
name: Yu, Guangsheng
name: Liu, Ren Ping
name: Georgalas, Nektarios
name: Reeves, Andrew
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cryptography and Security (cs.CR)
subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: Networking and Internet Architecture (cs.NI)
subject: Systems and Control (eess.SY)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: As distributed ledgers, blockchains run consensus protocols which trade capacity for consistency, especially in non-ideal networks with incomplete connectivity and erroneous links. Existing studies on the tradeoff between capacity and consistency are only qualitative or rely on specific assumptions. This paper presents discrete-time Markov chain models to quantify the capacity of Proof-of-Work based public blockchains in non-ideal networks. The comprehensive model is collapsed to be ergodic under the eventual consistency of blockchains, achieving tractability and efficient evaluations of blockchain capacity. A closed-form expression for the capacity is derived in the case of two miners. Another important aspect is that we extend the ergodic model to analyze the capacity under strong consistency, evaluating the robustness of blockchains against double-spending attacks. Validated by simulations, the proposed models are accurate and reveal the effect of link quality and the distribution of mining rates on blockchain capacity and the ratio of stale blocks.
Modelling Bose Einstein Correlations via Elementary Emitting Cells
Creators: name: Utyuzh, Oleg
name: Wilk, Grzegorz
name: Wlodarczyk, Zbigniew
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We propose a method of numerical modeling Bose Einstein Correlations by using the notion of Elementary Emitting Cells (EEC). They are intermediary objects containing identical bosons and are supposed to be produced independently during the hadronization process. Only bosons in EEC, which represents a single quantum state here, are subjected to the effects of Bose-Einstein (BE) statistics, which forces them to follow a geometrical distribution. There are no such effects between particles from different EECs. We illustrate our proposition by calculating a representative number of typical distributions and discussing their sensitivity to EECs and their characteristics.
description: 18 pages, 16 figures, 3 tables. Final version, to appear in Phys. Rev. D