cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Acoustic Analogue of Bloch Oscillations and Resonant Zener Tunneling in Ultrasonic Superlattices
Creators: name: Sanchis-Alepuz, Helios
name: Kosevich, Yuriy A.
name: Sanchez-Dehesa, Jose
Publisher: name: arXiv
Year: 2007
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: We demonstrate the existence of Bloch oscillations of acoustic fields in sound propagation through a superlattice of water cavities and layers of methyl methacrylate. To obtain the acoustic equivalent of a Wannier-Stark ladder, we have employed a set of cavities with different thicknesses. Bloch oscillations are observed as time-resolved oscillations of transmission in a direct analogy to electronic Bloch oscillations in biased semiconductor superlattices. Moreover, for a particular gradient of cavity thicknesses, an overlap of two acoustic minibands occurs, which results in resonant Zener-like transmission enhancement.
description: 5 pages, 4 figures. Submitted to Phys. Rev. Lett
Neutrino Emission from an Off-Axis Jet Driven by the Tidal Disruption Event AT2019dsg
Creators: name: Liu, Ruo-Yu
name: Xi, Shao-Qiang
name: Wang, Xiang-Yu
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Recently, a high-energy muon neutrino event was detected in association with a tidal disruption event (TDE) AT2019dsg at the time about 150 days after the peak of the optical/UV luminosity. We propose that such a association could be interpreted as arising from hadronic interactions between relativistic protons accelerated in the jet launched from the TDE and the intense radiation field of TDE inside the optical/UV photosphere, if we are observing the jet at a moderate angle (i.e., approximately 10-30 degree) with respect to the jet axis. Such an off-axis viewing angle leads to a high gas column density in the line of sight which provides a high opacity for the photoionization and the Bethe-Heitler process, {and allows the existence of an intrinsic long-term X-ray radiation of comparatively high emissivity}. As a result, the cascade emission accompanying the neutrino production, which would otherwise overshoot the flux limits in X-ray and/or GeV band, is significantly obscured or absorbed. Since the jets of TDEs are supposed to be randomly oriented in the sky, the source density rate of TDE with an off-axis jet is significantly higher than that of TDE with an on-axis jet. Therefore, an off-axis jet is naturally expected in a nearby TDE being discovered, supporting the proposed scenario.
description: 8 pages, 4 figures, published in PRD, 102, 083028
ERICC Working Paper_ERICC Research Agenda for Cox’s Bazar, Bangladesh
Creators: name: ERICC Consortium
name: Haque, Ashraf
name: Zaw, Htet Thiha
name: Saha, Proma
name: Dow, Jeffrey
name: Hasan, Galib
name: Abedin, Mohosin
name: Diazgranados Ferrans, Silvia
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 390201
subject: Education policy
classificationCode: 390407
subject: Inclusive education

description: Cox’s Bazar in Bangladesh remains one of the world’s most difficult places for education delivery in conflict and protracted crises, as Rohingya communities who fled state violence in Myanmar face multiple barriers to education access, quality, and continuity under a coherent system. Despite this situation, there is a critical lack of systematic evidence on the development, implementation, and impact of education interventions among host and Rohingya communities. Informed by the ERICC Conceptual Framework and consultations with local stakeholders, our research agenda tackles the problem by developing a series of studies on three key aspects of education in Cox’s Bazar: ongoing responses to the recently introduced Myanmar curriculum, the current role of madrasas and their potential as partners for education interventions, and an analysis on continuing education for girls and older adolescents. These studies will collect novel data on little-understood areas of education in host and refugee communities, fill knowledge gaps at policy system and local system levels, and provide much-needed insights to inform policy and research on education under conflict and protracted crises in Cox’s Bazar and beyond.
Autonomous software: Myth or magic?
Creators: name: Allan, Alasdair
name: Naylor, Tim
name: Saunders, Eric S.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We discuss work by the eSTAR project which demonstrates a fully closed loop autonomous system for the follow up of possible micro-lensing anomalies. Not only are the initial micro-lensing detections followed up in real time, but ongoing events are prioritised and continually monitored, with the returned data being analysed automatically. If the ``smart software'' running the observing campaign detects a planet-like anomaly, further follow-up will be scheduled autonomously and other telescopes and telescope networks alerted to the possible planetary detection. We further discuss the implications of this, and how such projects can be used to build more general autonomous observing and control systems.
description: 3 pages, 4 figures, to appear in proceedings of Hot-wiring the Transient Universe (HTU) 2007, Astronomische Nachrichten, March 2008
Ultrafast 3.5 μm fiber laser
Creators: name: Bawden, Nathaniel
name: Henderson-Sapir, Ori
name: Jackson, Stuart D.
name: Ottaway, David J.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We report the first mode-locked fiber laser to operate in the femtosecond regime well beyond 3 μm. The laser uses dual-wavelength pumping and non-linear polarisation rotation to produce 3.5 μm wavelength pulses with minimum duration of 580 fs at a repetition rate of 68 MHz. The pulse energy is 3.2 nJ, corresponding to a peak power of 5.5 kW.
The nuclear symmetry energy and stability of matter in neutron star
Creators: name: Kubis, Sebastian
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: It is shown that behavior of the nuclear symmetry energy is the key quantity in the stability consideration in neutron star matter. The symmetry energy controls the position of crust-core transition and also may lead to new effects in the inner core of neutron star.
description: 5 pages, 4 figures
Η αποστράγγιση των υποδομών των μεταφορικών συστημάτων: Σιδηροδρομικές γραμμές – Αυτοκινητόδρομοι – Διάδρομοι προσγείωσης / απογείωσης αεροσκαφών
Creators: name: Κουτσούλας, Αθανάσιος Κωνσταντίνου
Publisher: name: Aristotle University of Thessaloniki
Year: 2012
Subjects: Αποχέτευση/αποστράγγιση
Αστοχίες
Επιπτώσεις
Οδός μεταφοράς
Drainage system
Failure
Pavements

description: Η πτυχιακή εργασία πραγματεύεται θέματα που αφορούν, στην παρουσία του νερού στην «οδό μεταφοράς» των τριών συστημάτων μεταφορών, του Σιδηροδρομικού, του Οδικού και του Αεροπορικού (Διάδρομοι προσ/απογείωσης αεροσκαφών). Επικεντρώνεται την ανάλυση και αξιολόγηση των επιπτώσεων που προκαλούνται από την ύπαρξη του νερού και στην καταγραφή και περιγραφή των μεθόδων και των τεχνικών αποχέτευσης – αποστράγγισης που εφαρμόζονται. Γίνεται μία σύντομη περιγραφή της δομής της «οδού μεταφοράς», για κάθε σύστημα και δίδονται τα βασικά χαρακτηριστικά των στοιχείων που τη συγκροτούν. Αναλύονται οι τρόποι εισόδου και εξόδου του νερού από αυτήν. Αναγνωρίζονται οι αστοχίες που προκαλούνται από την παρουσία του νερού και αξιολογούνται οι επιπτώσεις τους στην κυκλοφορία. Καταγράφονται τα τεχνικά έργα και τα υλικά που χρησιμοποιούνται για αντιμετώπιση των αστοχιών και για την μείωση των επιπτώσεων και δίδονται παραδείγματα εφαρμογής. Δίδονται στοιχεία για την συντήρηση των παραπάνω εγκαταστάσεων. Τέλος επιχειρείται, με την βοήθεια πινάκων, μία συγκριτική παρουσίαση όλων των ανωτέρω για τα τρία εξεταζόμενα συστήματα.
description: This thesis addresses issues related to the presence of water in "transport route" of the three transport systems, railroad, road and the aerodrome runway. It focuses on the analysis and the evaluation of the effects caused by the presence of water and the recording and description of methods and techniques for drainage systems. There is a brief description of the structure of the "transport route" for each system, and there are being given the main characteristics of the data form. It also analyzes the entry and the exit of water from it. Moreover it recognizes failures that have been caused by the presence of water and assesses their impact on traffic. Furthermore it records all the structures and materials that are being used for treating failures and for reducing the impact on them. Examples of application are given. Also information’s for the maintenance of these facilities are being provided. Finally, it is being attempted, with the help of tables, a comparative presentation for the three systems examined.
ALMA 1.3 mm Survey of Lensed Submillimeter Galaxies (SMGs) Selected by Herschel: Discovery of Spatially Extended SMGs and Implications
Creators: name: Sun, Fengwu
name: Egami, Eiichi
name: Rawle, Timothy D.
name: Walth, Gregory L.
name: Smail, Ian
name: Dessauges-Zavadsky, Miroslava
name: Perez-Gonzalez, Pablo G.
name: Richard, Johan
name: Combes, Francoise
name: Ebeling, H.
name: Pello, Roser
name: van der Werf, Paul P.
name: Altieri, B.
name: Boone, Frederic
name: Cava, Antonio
name: Chapman, Scott C.
name: Clement, Benjamin
name: Finoguenov, Alexis
name: Nakajima, Kimihiko
name: Rujopakarn, Wiphu
name: Schaerer, Daniel
name: Valtchanov, Ivan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present an ALMA 1.3 mm (Band 6) continuum survey of lensed submillimeter galaxies (SMGs) at $z=1.0\sim3.2$ with an angular resolution of $\sim0.2$". These galaxies were uncovered by the Herschel Lensing Survey (HLS), and feature exceptionally bright far-infrared continuum emission ($S_\mathrm{peak} \gtrsim 90$ mJy) owing to their lensing magnification. We detect 29 sources in 20 fields of massive galaxy clusters with ALMA. Using both the Spitzer/IRAC (3.6/4.5 $\mathrm{μm}$) and ALMA data, we have successfully modeled the surface brightness profiles of 26 sources in the rest-frame near- and far-infrared. Similar to previous studies, we find the median dust-to-stellar continuum size ratio to be small ($R_\mathrm{e,dust}/R_\mathrm{e,star} = 0.38\pm0.14$) for the observed SMGs, indicating that star formation is centrally concentrated. This is, however, not the case for two spatially extended main-sequence SMGs with a low surface brightness at 1.3 mm ($\lesssim 0.1$ mJy arcsec$^{-2}$), in which the star formation is distributed over the entire galaxy ($R_\mathrm{e,dust}/R_\mathrm{e,star}>1$). As a whole, our SMG sample shows a tight anti-correlation between ($R_\mathrm{e,dust}/R_\mathrm{e,star}$) and far-infrared surface brightness ($Σ_\mathrm{IR}$) over a factor of $\simeq$ 1000 in $Σ_\mathrm{IR}$. This indicates that SMGs with less vigorous star formation (i.e., lower $Σ_\mathrm{IR}$) lack central starburst and are likely to retain a broader spatial distribution of star formation over the whole galaxies (i.e., larger $R_\mathrm{e,dust}/R_\mathrm{e,star}$). The same trend can be reproduced with cosmological simulations as a result of central starburst and potentially subsequent "inside-out" quenching, which likely accounts for the emergence of compact quiescent galaxies at $z\sim2$.
description: 32 pages, 18 figures, 4 tables. Accepted for publication in ApJ
Photon angular distribution and nuclear-state alignment in nuclear excitation by electron capture
Creators: name: Pálffy, Adriana
name: Harman, Zoltán
name: Surzhykov, Andrey
name: Jentschura, Ulrich D.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The alignment of nuclear states resonantly formed in nuclear excitation by electron capture (NEEC) is studied by means of a density matrix technique. The vibrational excitations of the nucleus are described by a collective model and the electrons are treated in a relativistic framework. Formulas for the angular distribution of photons emitted in the nuclear relaxation are derived. We present numerical results for alignment parameters and photon angular distributions for a number of heavy elements in the case of E2 nuclear transitions. Our results are intended to help future experimental attempts to discern NEEC from radiative recombination, which is the dominant competing process.
Προτομές Ρωμαίων Αυτοκρατειρών:
Creators: name: Λαμπρινός, Ζαχαρίας Ιωάννη
Publisher: name: Aristotle University of Thessaloniki
Year: 2012
Subjects: Προτομή
Γλυπτική
Αυτοκράτειρα
Bust
Sculpture
Empress

description: Αντικείμενο της παρούσας εργασίας είναι οι προτομές των Ρωμαίων Αυτοκρατειρών. Εξετάστηκαν προτομές, οι οποίες φέρουν πορτρέτο γυναίκας μέλους του αυτοκρατορικού οίκου με το οποίο συνανήκουν. Συνολικά συγκεντρώθηκαν 59 προτομές που προέρχονται τόσο από την Ιταλία, όσο και από τις επαρχίες της ρωμαϊκής αυτοκρατορίας και καλύπτουν ένα χρονικό φάσμα από την πρώιμη εποχή του Αυγούστου μέχρι και τα μέσα του 3ου αι. μ.Χ. Στην εισαγωγή παρουσιάζεται η μέχρι σήμερα έρευνα πάνω στο θέμα των ρωμαϊκών προτομών. Στο κύριο τμήμα της εργασίας παρουσιάζεται, με βάση το συγκεντρωμένο υλικό, η διάκριση των τύπων των προτομών. Επιπλέον, σε ξεχωριστά κεφάλαια εξετάζονται η εξέλιξη των γυναικείων προτομών που αφορά στην αύξηση του μεγέθους του εικονιζόμενου σώματος και η σχέση των τύπων των προτομών με γνωστούς αγαλματικούς τύπους.
description: The subject of this thesis is the busts of Roman Empresses. Busts, which bear portrait of woman member of the imperial house, with which belong together examined. In total, 59 busts collected, which come from both Italy and provinces of the Roman Empire and cover a time range from the early days of Augustus until the mid-third century A.D. The introduction presents the research to date on the topic of Roman busts. In the main part of the work presented, based on the collected material, the distinction between types of busts. In addition, the evolution of busts, on increasing the size of the depicted body and the relationship of types of busts with well known statuary types discussed in separate chapters.
Το δεδικασμένο των αποφάσεων των διοικητικών δικαστηρίων:
Creators: name: Αρβανίτη, Μυρτώ Ηλία
Publisher: name: Aristotle University of Thessaloniki
Year: 2011
Subjects: Δεδικασμένο
Διοικητικά
Δικαστήρια
Precedent
Administrative
Courts

description: Αντικείμενο της παρούσας μελέτης αποτελεί το δεδικασμένο των αποφάσεων των διοικητικών δικαστηρίων εν γένει,δηλαδή τόσο των αποφάσεων του Συμβουλίου της Επικρατείας όσο και των τακτικών διοικητικών δικαστηρίων,είτε αυτά εκδικάζουν ακυρωτικές διαφορές είτε διαφορές ουσίας.Αρχικά,εξετάζεται η έννοια και οι προϋποθέσεις δημιουργίας του δεδικασμένου.Στο πλαίσιο αυτό,αναλύεται ο ρόλος που διαδραματίζει το δεδικασμένο με αφορμή μια νέα δίκη,αλλά και όσον αφορά την υποχρέωση συμμόρφωσης της Διοίκησης.Στη συνέχεια,παρουσιάζονται αναλυτικά τα αντικειμενικά όρια του δεδικασμένου,με κυρίαρχη την έννοια του κριθέντος διοικητικής φύσης ζητήματος.Ένα άλλο θέμα που θίγεται είναι τα χρονικά όρια του δεδικασμένου και οι συνέπειες κατάλυσης αυτών.Τέλος,η μελέτη ασχολείται με τα υποκειμενικά όρια του δεδικασμένου και τη διάκριση ανάμεσα στη σχετικότητα του δεδικασμένου και την απόλυτη (erga omnes) ισχύ των ακυρωτικών αποφάσεων.
description: Object of the present study is the precedent (stare decisis) of the judgments of the administrative courts in general,that is not only of the rulings delivered by the Council of the State,but also by the ordinary administrative courts,whether they judge disputes of annulment or substantive administrative disputes.At first,we examine the meaning and the conditions under which precedent is created.Within this context,we analyse the role that the precedent plays on the occasion of a new trial,but also as far as it concerns the obligation of the Public Administration to comply with judicial decisions.Furthermore,the objective limits of the precedent are presented thoroughly,with the dominant sense of the administrative res judicata.Another matter examined,are the temporal limits of the precedent and the consequences of their abolition.Finally,the study examines the subjective limits of stare decisis and the distinction between the relativity of the first and the absolute (erga omnes) force of the annulling decisions.
Time-Series Regeneration with Convolutional Recurrent Generative Adversarial Network for Remaining Useful Life Estimation
Creators: name: Zhang, Xuewen
name: Qin, Yan
name: Yuen, Chau
name: Jayasinghe, Lahiru
name: Liu, Xiang
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: For health prognostic task, ever-increasing efforts have been focused on machine learning-based methods, which are capable of yielding accurate remaining useful life (RUL) estimation for industrial equipment or components without exploring the degradation mechanism. A prerequisite ensuring the success of these methods depends on a wealth of run-to-failure data, however, run-to-failure data may be insufficient in practice. That is, conducting a substantial amount of destructive experiments not only is high costs, but also may cause catastrophic consequences. Out of this consideration, an enhanced RUL framework focusing on data self-generation is put forward for both non-cyclic and cyclic degradation patterns for the first time. It is designed to enrich data from a data-driven way, generating realistic-like time-series to enhance current RUL methods. First, high-quality data generation is ensured through the proposed convolutional recurrent generative adversarial network (CR-GAN), which adopts a two-channel fusion convolutional recurrent neural network. Next, a hierarchical framework is proposed to combine generated data into current RUL estimation methods. Finally, the efficacy of the proposed method is verified through both non-cyclic and cyclic degradation systems. With the enhanced RUL framework, an aero-engine system following non-cyclic degradation has been tested using three typical RUL models. State-of-art RUL estimation results are achieved by enhancing capsule network with generated time-series. Specifically, estimation errors evaluated by the index score function have been reduced by 21.77%, and 32.67% for the two employed operating conditions, respectively. Besides, the estimation error is reduced to zero for the Lithium-ion battery system, which presents cyclic degradation.
Overluminous Blue Horizontal Branch Stars Formed by Low Mass Companions
Creators: name: Soker, Noam
name: Harpaz, Amos
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We construct a speculative scenario for rotation-induced extra helium mixing to the envelope of horizontal branch (HB) stars. This scenario differs from previous ones in that the mixing occurs after the star has left the red giant branch (RGB). We follow the evolution of a low metallicity star from the RGB to the HB, and examine the density profile and radius in the core-envelope boundary region. In the transition from the RGB to the HB the envelope shrinks by two orders of magnitude in size and the core swells, such that any non-negligible rotation on the RGB will result in a strong rotational shear at the core-envelope boundary. For a non-negligible rotation to exist on the RGB the star has to be spun up by a companion spiraling inside its envelope (a common envelope evolution). We speculate that shear instabilities on the HB might mix helium-rich core material to the envelope. The shallow density profile on the HB is less likely to prevent mixing. As previously shown, extra helium mixing can account for the overluminous blue HB stars found in some globular clusters. Although being speculative, this study supports the idea that the presence of low mass companions, from planets to low mass main sequence stars, influence the evolution of stars, and can explain some properties of the color-magnitude (Herzsprung-Russel) diagram of globular clusters. Namely, low mass companions can be an ingredient in the so called `second parameter' of globular clusters.
description: ApJ, in press
Working Paper_ERICC Evidence Review_From evidence to practice: The state of the evidence of education in an emergency context – Cox’s Bazar
Creators: name: ERICC Consortium
name: Saha, Proma
name: Haque, Ashraf
name: Hasan, Galib
name: Abedin, Mohosin
name: Dow, Jeffrey
name: Zaw, Htet Thiha
name: Diazgranados Ferrans, Silvia
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 390201
subject: Education policy
classificationCode: 390407
subject: Inclusive education

description: Access to high-quality and continuous education is a fundamental right for all children, including those affected by conflict and protracted crises. Yet despite ongoing efforts, significant barriers to access, quality and continuity of education remain. In this paper, we apply a conceptual framework recently developed as part of the Education Research in Conflict and Protracted Crises (ERICC) project to carry out a systematic review of evidence about the state of education in Cox’s Bazar, Bangladesh, where education delivery to conflict-affected Rohingya communities remains particularly challenging. Following an ERICC-informed analysis of 127 studies, we identify critical knowledge gaps in existing evidence: there is little to no evidence for what works; data on access, and on the quality and continuity of education are lacking; and few studies provide analysis at policy systems level. This is a significant concern since these gaps limit the ability of existing evidence to ensure that the new policy shift to the Myanmar curriculum delivers high-quality education in Cox’s Bazar. The implications of these findings provide national stakeholders, development agencies, and their partners with a comprehensive understanding of the analytical work taking place on the ground.
On the role of confinement on solidification in pure materials and binary alloys
Creators: name: Athreya, Badrinarayan P.
name: Dantzig, Jonathan A.
name: Liu, Shan
name: Trivedi, Rohit
Publisher: name: arXiv
Year: 2006
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We use a phase-field model to study the effect of confinement on dendritic growth, in a pure material solidifying in an undercooled melt, and in the directional solidification of a dilute binary alloy. Specifically, we observe the effect of varying the vertical domain extent ($δ$) on tip selection, by quantifying the dendrite tip velocity and curvature as a function of $δ$, and other process parameters. As $δ$ decreases, we find that the operating state of the dendrite tips becomes significantly affected by the presence of finite boundaries. For particular boundary conditions, we observe a switching of the growth state from 3-D to 2-D at very small $δ$, in both the pure material and alloy. We demonstrate that results from the alloy model compare favorably with those from an experimental study investigating this effect.
description: 13 pages, 9 figures, 3 tables
The Many Facets of Distance and Space: the Mobility of Actors in Globally Distributed Project Teams
Creators: name: Clear, Tony
name: Hussain, Waqar
name: MacDonell, Stephen G.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: Global software development practices are shaped by the challenges of time and 'distance', notions perceived to separate sites in a multi-site collaboration. Yet while sites may be fixed, the actors in global projects are mobile, so distance becomes a dynamic spatial dimension rather than a static concept. This empirical study applies grounded theory to unpack the nature of mobility within a three site globally distributed team setting. We develop a model for mapping the movements of team members in local and global spaces, and demonstrate its operation through static snapshots and dynamic patterns evolving over time. Through this study we highlight the complexity of 'mobility' as one facet of 'space' in globally distributed teams and illuminate its tight coupling with the accompanying dimensions of accessibility and context awareness.
description: Conference, 6 pages, 3 figures
Convolutional Neural Networks for Automatic Detection of Artifacts from Independent Components Represented in Scalp Topographies of EEG Signals
Creators: name: Placidi, Giuseppe
name: Cinque, Luigi
name: Polsinelli, Matteo
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: Electroencephalography (EEG) measures the electrical brain activity in real-time by using sensors placed on the scalp. Artifacts, due to eye movements and blink, muscular/cardiac activity and generic electrical disturbances, have to be recognized and eliminated to allow a correct interpretation of the useful brain signals (UBS) of EEG. Independent Component Analysis (ICA) is effective to split the signal into independent components (ICs) whose re-projections on 2D scalp topographies (images), also called topoplots, allow to recognize/separate artifacts and by UBS. Until now, IC topoplot analysis, a gold standard in EEG, has been carried on visually by human experts and, hence, not usable in automatic, fast-response EEG. We present a completely automatic and effective framework for EEG artifact recognition by IC topoplots, based on 2D Convolutional Neural Networks (CNNs), capable to divide topoplots in 4 classes: 3 types of artifacts and UBS. The framework setup is described and results are presented, discussed and compared with those obtained by other competitive strategies. Experiments, carried on public EEG datasets, have shown an overall accuracy of above 98%, employing 1.4 sec on a standard PC to classify 32 topoplots, that is to drive an EEG system of 32 sensors. Though not real-time, the proposed framework is efficient enough to be used in fast-response EEG-based Brain-Computer Interfaces (BCI) and faster than other automatic methods based on ICs.
WTDUN: Wavelet Tree-Structured Sampling and Deep Unfolding Network for Image Compressed Sensing
Creators: name: Han, Kai
name: Wang, Jin
name: Shi, Yunhui
name: Cai, Hanqin
name: Ling, Nam
name: Yin, Baocai
Publisher: name: arXiv
Year: 2024
Subjects: subject: Image and Video Processing (eess.IV)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Deep unfolding networks have gained increasing attention in the field of compressed sensing (CS) owing to their theoretical interpretability and superior reconstruction performance. However, most existing deep unfolding methods often face the following issues: 1) they learn directly from single-channel images, leading to a simple feature representation that does not fully capture complex features; and 2) they treat various image components uniformly, ignoring the characteristics of different components. To address these issues, we propose a novel wavelet-domain deep unfolding framework named WTDUN, which operates directly on the multi-scale wavelet subbands. Our method utilizes the intrinsic sparsity and multi-scale structure of wavelet coefficients to achieve a tree-structured sampling and reconstruction, effectively capturing and highlighting the most important features within images. Specifically, the design of tree-structured reconstruction aims to capture the inter-dependencies among the multi-scale subbands, enabling the identification of both fine and coarse features, which can lead to a marked improvement in reconstruction quality. Furthermore, a wavelet domain adaptive sampling method is proposed to greatly improve the sampling capability, which is realized by assigning measurements to each wavelet subband based on its importance. Unlike pure deep learning methods that treat all components uniformly, our method introduces a targeted focus on important subbands, considering their energy and sparsity. This targeted strategy lets us capture key information more efficiently while discarding less important information, resulting in a more effective and detailed reconstruction. Extensive experimental results on various datasets validate the superior performance of our proposed method.
description: 20pages,Accepted by ACM Transactions on Multimedia Computing Communications and Applications (TOMM)
Calculation of Optimal Design and Ideal Productivities of Volumetrically-Lightened Photobioreactors using the Constructal Approach
Creators: name: Cornet, Jean-François
Publisher: name: arXiv
Year: 2020
Subjects: subject: Applied Physics (physics.app-ph)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Physical sciences

description: This article examines the optimal design and ideal kinetic performances of volumetrically-lightened photobioreactors (PBR). From knowledge models developed for several years by the author, simple theoretical rules are established at first to define the optimal functioning of solar and artificially-lightened PBR. The constructal approach is then used accordingly, what allows the emergence of the optimal design, or the best lighting structures assembly, in Cartesian and curvilinear geometries, with a privileged treatment for the practical case of the 2D-cylindrical geometry. The obtained results confirm the considerable potential of this approach which is applied here for the first time to the case of the radiant light transfer in participating and reactive media. This enables to define clearly, from a theoretical point of view, the concept of ideal PBR (both for solar or artificial illuminations), which is demonstrated to correspond exactly in most cases to volumetrically-lightened PBR, mainly for the solar DiCoFluV (Dilution Contrôlée du Flux en Volume) concept developed in this article. For this last case, the results of the calculations allow to announce maximal biomass productivities as thermodynamic limits, what can contribute to clarify a today confused debate on this point. The work proposed in this article finally establishes guidelines to conceive more efficient largescale PBR of any desired geometry and criteria like volume (for artificial illumination) or surface (for solar illumination) maximum productivities and internal or external irradiation.
title: Blickpunkt Archäologie, Bd. 1 Nr. 1 (2024): Blickpunkt Archäologie
title: Blickpunkt Archäologie
titleType: AlternativeTitle
Creators: name: Blickpunkt Archäologie
Publisher: name: Blickpunkt Archäologie
Year: 2024

description: Die Redaktion
Detektorgängerei in Schleswig-Holstein - Das "Schleswiger Modell"...32-35
Daueraufgabe "Archäologische Landesaufnahme"...25-31
Vorwort Blickpunkt...2
Umschlag
Ein kleines Fach mit guten Berufschancen...47-50
 Stellungnahme des DARV zu den Sparplänen des Dekanats des Fachbereichs 09 der Goethe-Universität Frankfurt im Bereich Altertumswissenschaften, insbesondere der Archäologien und der Latinistik an den Präsidenten Enrico Reiff...45-46
Inhalt...1
Förderprogramm Museen im ländlichen Raum 2024...44
Mitgliederversammlung des Deutschen Verbandes für Archäologie...43
100 Jahre Sammler im Wattenmeer - Zwischen der Erfassung einzelner Funde und einer ganzen Landschaft...36-42
Detektorgängerei in Schleswig-Holstein - das "Schleswiger Modell"...32-35
Daueraufgabe "Archäologische Landesaufnahme": Der Beitrag der ehrenamtlichen Bodendenkmalpflege in Mecklenburg...25-31
Das "Voss weiß Bescheid Prinzip" und die Landesaufnahme 2.0 im 21. Jahrhundert...20-24
Zeiten des Umbruchs: Die archäologische Landesaufnahme Schleswig-Holstein im digitalen Zeitalter...12-19
100 Jahre archäologische Landesaufnahme in Schleswig-Holstein...4-11
Kolloquium "100 Jahre Archäologie in Schleswig-Holstein"...3
Search for the Higgs boson in events with missing transverse energy and b quark jets produced in proton-antiproton collisions at s**(1/2)=1.96 TeV
Creators: name: CDF Collaboration
name: Aaltonen, T.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We search for the standard model Higgs boson produced in association with an electroweak vector boson in events with no identified charged leptons, large imbalance in transverse momentum, and two jets where at least one contains a secondary vertex consistent with the decay of b hadrons. We use ~1 fb-1 integrated luminosity of proton-antiproton collisions at s**(1/2)=1.96 TeV recorded by the CDF II experiment at the Tevatron. We find 268 (16) single (double) b-tagged candidate events, where 248 +/- 43 (14.4 +/- 2.7) are expected from standard model background processes. We place 95% confidence level upper limits on the Higgs boson production cross section for several Higgs boson masses ranging from 110 GeV/c2 to 140 GeV/c2. For a mass of 115 GeV/c2 the observed (expected) limit is 20.4 (14.2) times the standard model prediction.
description: 8 pages, 2 figures, submitted to Phys. Rev. Lett
Path integrals and wavepacket evolution for damped mechanical systems
Creators: name: Jain, Dharmesh
name: Das, A.
name: Kar, Sayan
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Damped mechanical systems with various forms of damping are quantized using the path integral formalism. In particular, we obtain the path integral kernel for the linearly damped harmonic oscillator and a particle in a uniform gravitational field with linearly or quadratically damped motion. In each case, we study the evolution of Gaussian wavepackets and discuss the characteristic features that help us distinguish between different types of damping. For quadratic damping, we show that the action and equation of motion of such a system has a connection with the zero dimensional version of a currently popular scalar field theory. Furthermore we demonstrate that the equation of motion (for quadratic damping) can be identified as a geodesic equation in a fictitious two-dimensional space.
description: 15 pages, 6 figures
Quasi--Euclidean classification of Alcoved Convex Polyhedra
Creators: name: de la Puente, M. J.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Combinatorics (math.CO)
subject: Metric Geometry (math.MG)
subject: FOS: Mathematics
subject: 52B10, 52B12, 15A80

description: We give the quasi--Euclidean classification of the maximal (with respect to the $f$--vector) alcoved polyhedra. The $f$--vector of these maximal convex bodies is $(20,30,12)$, so they are simple dodecahedra. We find eight quasi--Euclidean classes. This classification, which preserves angles, is finer than the known combinatorial classification (found in 2012 by Jiménez and de la Puente), which has only six classes. Each alcoved polyhedron $\mathcal{P}$ is represented by a unique visualized idempotent matrix $A$. Some 2--minors of $A$ are invariants of $\mathcal{P}$: they are the tropical edge--lengths of $\mathcal{P}$.
The Low-Mass Limit for Total Mass of W UMa-type Binaries
Creators: name: Stepien, K.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The observations of W UMa type stars show a well-defined short-period limit of 0.22 d, which is equivalent to a lower mass limit of approximately 1 solar mass for the total binary mass. It is currently believed that cool contact binaries are formed from detached binaries losing angular momentum (AM) via a magnetized wind. Orbital evolution of detached binaries with various component masses was followed until the primary component reached the critical Roche surface and the Roche lobe overflow (RLOF) began. It was assumed that the minimum initial, i.e. ZAMS, orbital period of such binaries is equal to 2 d and that the components lose AM just as single stars. According to the mass-dependent formula for AM loss rate of single stars, derived in this paper, the AM loss time scale increases substantially with decreasing stellar mass. The formula was applied to binaries with the initial primary component masses between 1.0 and 0.6 solar mass and two values of mass ratio q=1 and 0.5. Detailed calculations show that the time needed to reach RLOF by a 1 solar mass primary is of the order of 7.5 Gyr, but it increases to more than 13 Gyr for a binary with an initial primary mass of 0.7 solar mass. Binaries with less massive primaries have not yet had time to reach RLOF even within the age of the Universe. This sets a lower mass limit for the presently existing contact binaries
description: 18 pages, 3 figures.Printed in Acta Astron. version of the paper contains a mistake in Eq.(15). A correct version of the equation appears here
An Analysis of the Effect of Capacity Building Programs on the Performance of Rice Farmers in Kano State
Creators: name: Ibrahim Bala M.
Publisher: name: gjrpublication
Year: 2024

description: Nigeria has been one of the major importers of rice across the globe, despite the pact that it is densest country of the African continent with a population of over 170 million people. Its current economy heavily depends on the oil sector: its foreign exchange earnings depend for 95 % from the oil industry and its public budget for 80%. As such, there is an overwhelmingly large proportion of Nigerians who are food insecure. They are spread across both rural and urban settings in Nigeria, though most are in rural areas. The aim of this study is to analyze the effect of capacity building on the performance of rice farmers in Kano State. The study used survey research design. The sample size of this study comprised 252 rice farmers whose participate in one or more capacity building program in Kano State. The data was analysed using Pearson correlation coefficient and multiple regression analysis with aid of statistical package software for social sciences (SPSS) version 23.0. However, the result of this study indicated the significant positive relationship between capacity building programs (access to finance, managerial training and modern technology) and performance of rice farmers in Kano State. This implies that when access to finance, managerial training and modern technology are available to rice farmers, their performance will be increased significantly, this will also reduce the level of rice importation thereby boost employment generation as well as development of Nigerian economy.
Microaggressions among staff in higher education: Examining differences by social identities, and the association with job satisfaction
Creators: name: Brown, Joni A.
name: Robles, Theodore F.
name: Labao, Jerome
name: Soriano, Metzy
name: Schetter, Christine Dunkel
Publisher: name: Taylor & Francis
Year: 2024
Subjects: subject: Medicine
subject: Environmental Sciences not elsewhere classified
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Science Policy

description: Microaggressions are everyday slights or insults directed toward members of marginalized groups; microaggressions are harmful, even if unintentional, and they occur in various contexts including the workplace. However, there is limited research on microaggressions among staff in higher education. The first aim of this study was to obtain systematic reports of experiences of microaggressions and other forms of discrimination among staff at a large public university. The second aim was to test for differences in these experiences as a function of staff members’ race/ethnicity, gender identity, sexual orientation, and disability status. A third aim was to examine whether microaggression and discrimination predicted job satisfaction. Web-based survey data were collected from a diverse sample of 680 university staff members. The survey included adapted versions of two scales on microaggressions and standard measures of everyday and workplace discrimination. Results indicated that experiences of microaggressions and discrimination were common among staff, and differed by race/ethnicity, gender identity, sexual orientation, and disability status, with those of marginalized identities reporting significantly more negative experiences. Finally, more frequent experiences of microaggressions and workplace discrimination predicted lower job satisfaction. These findings indicate a need for education on microaggressions pertaining to campus climate improvement in institutions of higher education.
Lattice Simulations for Light Nuclei: Chiral Effective Field Theory at Leading Order
Creators: name: Borasoy, Bugra
name: Epelbaum, Evgeny
name: Krebs, Hermann
name: Lee, Dean
name: Meißner, Ulf-G.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We discuss lattice simulations of light nuclei at leading order in chiral effective field theory. Using lattice pion fields and auxiliary fields, we include the physics of instantaneous one-pion exchange and the leading-order S-wave contact interactions. We also consider higher-derivative contact interactions which adjust the S-wave scattering amplitude at higher momenta. By construction our lattice path integral is positive definite in the limit of exact Wigner SU(4) symmetry for any even number of nucleons. This SU(4) positivity and the approximate SU(4) symmetry of the low-energy interactions play an important role in suppressing sign and phase oscillations in Monte Carlo simulations. We assess the computational scaling of the lattice algorithm for light nuclei with up to eight nucleons and analyze in detail calculations of the deuteron, triton, and helium-4.
description: 44 pages, 15 figures
Οι γενικές αρχές του άρθρου 174 παρ.2 ΣΕΚ για την προστασία του περιβάλλοντος στην κοινοτική νομοθεσία και νομολογία:
Creators: name: Κελεσίδου, Αννα Χρήστου
Publisher: name: Aristotle University of Thessaloniki
Year: 2012
Subjects: Περιβάλλον
Πρόληψη
Ρύπανση
Environment
Prevention
Pollution

description: Η παρούσα διπλωματική εργασία έχει ως στόχο την παρουσίαση των γενικών αρχών που περιλαμβάνονται στο άρθρο 174 παρ.2 της Συνθήκης των Ευρωπαϊκών Κοινοτήτων. Ειδικότερα, μελετάται η αποτύπωση τους στο παράγωγο κοινοτικό δίκαιο και η ερμηνεία τους από τα Κοινοτικά Δικαστήρια. Αρχικά, αναφερόμαστε στην αρχή της πρόληψης και στην διαδικασία εκτίμησης των περιβαλλοντικών επιπτώσεων ως εργαλείο για την εφαρμογή της. Στη συνέχεια, παρουσιάσαμε την αρχή της προφύλαξης, στο πως αυτή ερμηνεύτηκε από την Ευρωπαική Επιτροπή και αντικατοπτρίζεται στο τομέα της βιοτεχνολογία και των Γενετικά Τροποποιημένων Οργανισμών. Περαιτέρω ασχολούμαστε με την αρχή ο ρυπαίνων πληρώνει και την οδηγία 2004/35/ΕΚ για την περιβαλλοντική ευθύνη. Τέλος, ασχοληθήκαμε στην αρχή της αποκατάστασης των προσβολών του περιβάλλοντος κατά προτεραιότητα στην πηγή.
description: Τhe present essay aims at presenting the general principles included in the article 174 par.2 of the European Community Treaty. In specific , we study their reflection on the secondary community law and their interpretation by the European Court. Initially, we refer to the prevention principle and to the process of assessing the environmental consequences as a mean of its application. Then, we present the precaution principle , how it is interpreted by the European Commission and how it is mirrored on the section of biotechnology and genetically modified organizations. Furthermore , we deal with the principle the polluter pays and the directive 2004/35/EC for the environmental responsinility. Finally, we study the principle of restoring the environmental damages by priority on the source.
Bulk entanglement and its shape dependence
Creators: name: Fan, Zhong-Ying
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study one-loop bulk entanglement entropy in even spacetime dimensions using the heat kernel method, which captures the universal piece of entanglement entropy, a logarithmically divergent term in even dimensions. In four dimensions, we perform explicit calculations for various shapes of boundary subregions. In particular, for a cusp subregion with an arbitrary opening angle, we find that the bulk entanglement entropy always encodes the same universal information about the boundary theories as the leading entanglement entropy in the large N limit, up to a fixed proportional constant. By smoothly deforming a circle in the boundary, we find that to leading order of the deformations, the bulk entanglement entropy shares the same shape dependence as the leading entanglement entropy and hence the same physical information can be extracted from both cases. This establishes an interesting local/nonlocal duality for holographic $\mm{CFT}_3$. However, the result does not hold for higher dimensional holographic theories.
description: 36 pages, 1 figure; minor corrections, conclusions unchanged
A regional Bayesian POT model for flood frequency analysis
Creators: name: Ribatet, Mathieu
name: Sauquet, Eric
name: Grésillon, Jean-Michel
name: Ouarda, Taha B. M. J.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Applications (stat.AP)
subject: FOS: Computer and information sciences

description: Flood frequency analysis is usually based on the fitting of an extreme value distribution to the local streamflow series. However, when the local data series is short, frequency analysis results become unreliable. Regional frequency analysis is a convenient way to reduce the estimation uncertainty. In this work, we propose a regional Bayesian model for short record length sites. This model is less restrictive than the index flood model while preserving the formalism of "homogeneous regions". The performance of the proposed model is assessed on a set of gauging stations in France. The accuracy of quantile estimates as a function of the degree of homogeneity of the pooling group is also analysed. The results indicate that the regional Bayesian model outperforms the index flood model and local estimators. Furthermore, it seems that working with relatively large and homogeneous regions may lead to more accurate results than working with smaller and highly homogeneous regions.
A multi-technique study of altered granitic rock from the Krunkelbach Valley uranium deposit, Southern Germany
Creators: name: Pidchenko, Ivan
name: Bauters, Stephen
name: Sinenko, Irina
name: Hempel, Simone
name: Amidani, Lucia
name: Detollenaere, Dirk
name: Vinze, Laszlo
name: Banerjee, Dipanjan
name: van Silfhout, Roelof
name: Kalmykov, Stepan
name: Göttlicher, Jörg
name: Baker, Robert J.
name: Kvashnina, Kristina
Publisher: name: arXiv
Year: 2020
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Herein, a multi-technique study was performed to reveal the elemental speciation and microphase composition in altered granitic rock collected from the Krunkelbach Valley uranium (U) deposit area near an abandoned U mine, Black Forest, Southern Germany.
description: RSC Advances (2020)