cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Multi-modal Sarcasm Detection and Humor Classification in Code-mixed Conversations
Creators: name: Bedi, Manjot
name: Kumar, Shivani
name: Akhtar, Md Shad
name: Chakraborty, Tanmoy
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: Sarcasm detection and humor classification are inherently subtle problems, primarily due to their dependence on the contextual and non-verbal information. Furthermore, existing studies in these two topics are usually constrained in non-English languages such as Hindi, due to the unavailability of qualitative annotated datasets. In this work, we make two major contributions considering the above limitations: (1) we develop a Hindi-English code-mixed dataset, MaSaC, for the multi-modal sarcasm detection and humor classification in conversational dialog, which to our knowledge is the first dataset of its kind; (2) we propose MSH-COMICS, a novel attention-rich neural architecture for the utterance classification. We learn efficient utterance representation utilizing a hierarchical attention mechanism that attends to a small portion of the input sentence at a time. Further, we incorporate dialog-level contextual attention mechanism to leverage the dialog history for the multi-modal classification. We perform extensive experiments for both the tasks by varying multi-modal inputs and various submodules of MSH-COMICS. We also conduct comparative analysis against existing approaches. We observe that MSH-COMICS attains superior performance over the existing models by > 1 F1-score point for the sarcasm detection and 10 F1-score points in humor classification. We diagnose our model and perform thorough analysis of the results to understand the superiority and pitfalls.
description: 13 pages, 4 figures, 9 tables
Innovative seismic isolation devices based on lattice materials: A review
Creators: name: Fraternali, F.
name: Amendola, A.
name: Benzoni, G.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: This paper reviews recent literature results on the mechanics of structures formed by layers of pentamode lattices alternating with stiffening plates, which can be effectively employed for the development of seismic isolation devices and vibration attenuation tools, with nearly complete band gaps for shear waves. It is shown that such structures, named pentamode bearings, can respond either in the stretching-dominated regime, or in the bending-dominated regime, depending on the nature of the joints connecting the different members. Their response is characterized by high vertical stiffness and theoretically zero shear stiffness in the stretching dominated regime, or considerably low values of such a quantity in the bending dominated regime. Available results on the experimental response of 3d printed models to combined compression and shear loading highlight that the examined structures are able to exhibit energy dissipation capacity and effective damping that are suitable for seismic isolation devices. Their fabrication does not necessarily require heavy industry, and expensive materials, being possible with ordinary 3-D printers.
Damage to Relativistic Interstellar Spacecraft by ISM Impact Gas Accumulation
Creators: name: Drobny, Jon
name: Cohen, Alexander N.
name: Curreli, Davide
name: Lubin, Philip
name: Pelizzo, Maria G.
name: Umansky, Maxim
Publisher: name: arXiv
Year: 2021
Subjects: subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: As part of the NASA Starlight collaboration, we look at the implications of radiation effects from impacts with the interstellar medium (ISM) on a directed energy driven relativistic spacecraft. The spacecraft experiences a stream of MeV/nucleon impacts along the forward edge primarily from hydrogen and helium nuclei. The accumulation of implanted slowly diffusing gas atoms in solids drives damage through the meso-scale processes of bubble formation, blistering, and exfoliation. This results in macroscopic changes to material properties and, in the cases of blistering and exfoliation, material erosion via blister rupture and delamination. Relativistic hydrogen and helium at constant velocity will stop in the material at a similar depth, as predicted by Bethe-Bloch stopping and subsequent simulations of the implantation distribution, leading to a mixed hydrogen and helium system similar to that observed in fusion plasma-facing components (PFC's). However, the difference in location of near-surface gas atoms with respect to the direction of exposure means that previously developed empirical models of blistering cannot be used to predict bubble formation or blistering onset. In this work, we present a model of the local gas concentration threshold for material blistering from exposure to the ISM at relativistic speeds. Expected effects on the spacecraft and mitigation strategies are also discussed. The same considerations apply to the Breakthrough Starshot mission.
Shift Work, Long Work Hours, Inflammatory Markers, and Chronic Kidney Disease in HCHS/SOL and NHANES
Creators: name: Kotek, Christine M Jessup
Publisher: name: University of Illinois at Chicago
Year: 2024

description: Shift work is associated with chronic disease via disruption of the body’s natural circadian rhythms. Many functions of the body fluctuate in a circadian manner, including the immune and renal systems. We examined the impact of shift work and long work hours on inflammation and chronic kidney disease (CKD) in two different Hispanic/Latino study populations using data from the Hispanic Community Health Study/Study of Latinos (HCHS/SOL) and the National Health and Nutrition Examination Survey (NHANES). Cross-sectional associations between shift work and work hours with high-sensitivity C-reactive protein (hs-CRP), white blood cell (WBC) count, estimated glomerular filtration rate (eGFR), and urine albumin-creatine ratio (UACR) were analyzed using multivariable linear regression. Additionally, associations between shift work and work hours with the odds of CKD were investigated with multivariable logistic regression. We found that night shift workers who also worked long work hours (≥40 hours per week) had large significant increases in WBC counts in the HCHS/SOL study population. In addition, we found increased odds of CKD for male and female night shift workers compared to day shift workers in both the HCHS/SOL and NHANES study populations. The results persisted after controlling for multiple confounding factors and variables potentially on the causal pathway between occupational characteristics and markers of inflammation and kidney disease. Our findings indicated that night shift work, over other shift schedule types, had the greatest association with inflammation and CKD, which is consistent with prior research on shift work and disease. However, this is the first ever study to examine these associations in Hispanics/Latinos, so further research is needed. Hispanics/Latinos are overrepresented in alternate work schedules in the US, so this research could help shape policies to protect Hispanic/Latino workers.
Οπτικοί Βιοαισθητήρες στον Τομέα της Υγείας
Creators: name: Γερομίχος, Μιχαήλ Ιωάννη
Publisher: name: Aristotle University of Thessaloniki
Year: 2023
Subjects: Βιοαισθητήρας
Ανάκλαση
Βιοανίχνευση
Biosensor
Reflection
Biosensing

description: Σκοπός της διατριβής ήταν η μελέτη των οπτικών βιοαισθητήρων στον τομέα της υγείας και οι τελευταίες εξελίξεις σχετικά με τις εφαρμογές τους. Αρχικά εξετάσαμε τα μέρη ενός βιοαισθητήρα και κάναμε μια αναδρομική αναφορά στην ιστορία των βιοαισθητήρων. Στη συνέχεια αναφερθήκαμε στα είδη της βιοανίχνευσης, ενώ έγινε αναφορά στον τρόπου εισόδου του φωτός σε έναν βιοαισθητήρα. Ακολούθησε τα είδη των οπτικών βιοαισθητήρων με τα φαινόμενα τους και το πως αυτά αντιδρούν στο φωτός, και στην συνέχεια αναφερθήκαμε στις διαγνωστικές συσκευές Point of Care (POC) που σήμερα είναι πολύ διαδεδομένες. Τέλος πραγματοποιήσαμε μια πειραματική εφαρμογή ενός βιοαισθητήρα ανάκλασης επιλεκτικού μήκους κύματος σε περιβάλλον Lumerical με επιφάνεια προσομοίωσης διαλύματος – νερού που αναπαριστά έναν πραγματικό βιοαισθητήρα, ώστε να υπολογίσουμε τα φαινόμενα έντασης ανάκλασης και απορρόφησης.
description: The aim of this thesis was to study optical biosensors in the health sector and the latest developments regarding their applications. We first examined the parts of a biosensor and made a retrospective review of the history of biosensors. We then discussed the types of biosensing and referred to the way light enters a biosensor. This was followed by the types of optical biosensors with their phenomena and how they react to light, and then we referred to the Point of Care (POC) diagnostic devices that are now very common. Finally, we performed an experimental implementation of a wavelength-selective reflection biosensor in a Lumerical environment with a solution-water simulation surface representing a real biosensor to calculate the reflection and absorption intensity phenomena.
Fundamental Limits of Integrated Sensing and Communication without Perfect Channel State Information
Creators: name: Di Bari, Simone
Publisher: name: University of Illinois at Chicago
Year: 2024

description: This thesis explores the theoretical underpinnings and practical implications of Integrated Sensing and Communication (ISAC) within future wireless networks. As a transformative technology, ISAC merges sensing and communication functionalities to optimize the utilization of spectrum and hardware resources, a necessity driven by the increasing demands of modern applications such as autonomous vehicles and immersive technologies.

The research addresses the critical need to understand the fundamental trade-offs between sensing and communication within ISAC systems. It investigates the Bayesian Cramér-Rao Bound (BCRB) as a metric for evaluating the performance limits of ISAC systems under various conditions. This bound is particularly relevant given the non-realistic nature of assuming known state information in dynamic channel environments, necessitating continuous estimation.

This thesis evaluates the performance of different transmission strategies by developing a comprehensive theoretical model. It balances the conflicting requirements of sensing and communication, thus providing insights into the optimal allocation of power and resources. The simulation results validate the theoretical predictions, demonstrating how ISAC can enhance spectral, energy, and economic efficiencies in next-generation wireless networks.

The findings contribute significantly to the field by laying the groundwork for future research to integrate further and optimize sensing and communication. The methodologies and insights presented in this work are expected to drive the development of advanced ISAC solutions, pushing the boundaries of what is achievable in wireless communication systems.
A Schwarz lemma for a domain related to mu-synthesis
Creators: name: Abouhajar, A. A.
name: White, M. C.
name: Young, N. J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Complex Variables (math.CV)
subject: Optimization and Control (math.OC)
subject: FOS: Mathematics
subject: 30C80, 32F45, 93D21

description: We prove a Schwarz lemma for a domain E in 3-dimensional complex space that arises in connection with a problem in H infinity control theory. We describe a class of automorphisms of E and determine the distinguished boundary of E. We obtain a type of Schwarz-Pick lemma for a two by two mu-synthesis problem.
description: 33 pages, 1 figure, This version (v3) contains a correction of inaccuracies in Theorems 2.2 and 2.4. Three of the eleven equivalent conditions we gave for membership of the tetrablock were incorrect. The error does not affect any of the rest of the paper
Learning Inductive Attention Guidance for Partially Supervised Pancreatic Ductal Adenocarcinoma Prediction
Creators: name: Wang, Yan
name: Tang, Peng
name: Zhou, Yuyin
name: Shen, Wei
name: Fishman, Elliot K.
name: Yuille, Alan L.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Pancreatic ductal adenocarcinoma (PDAC) is the third most common cause of cancer death in the United States. Predicting tumors like PDACs (including both classification and segmentation) from medical images by deep learning is becoming a growing trend, but usually a large number of annotated data are required for training, which is very labor-intensive and time-consuming. In this paper, we consider a partially supervised setting, where cheap image-level annotations are provided for all the training data, and the costly per-voxel annotations are only available for a subset of them. We propose an Inductive Attention Guidance Network (IAG-Net) to jointly learn a global image-level classifier for normal/PDAC classification and a local voxel-level classifier for semi-supervised PDAC segmentation. We instantiate both the global and the local classifiers by multiple instance learning (MIL), where the attention guidance, indicating roughly where the PDAC regions are, is the key to bridging them: For global MIL based normal/PDAC classification, attention serves as a weight for each instance (voxel) during MIL pooling, which eliminates the distraction from the background; For local MIL based semi-supervised PDAC segmentation, the attention guidance is inductive, which not only provides bag-level pseudo-labels to training data without per-voxel annotations for MIL training, but also acts as a proxy of an instance-level classifier. Experimental results show that our IAG-Net boosts PDAC segmentation accuracy by more than 5% compared with the state-of-the-arts.
Ανάπτυξη μεθοδολογίας με Τεχνητά Νευρωνικά Δίκτυα για την εκτίμηση της απώλειας διαδρομής ραδιοκυμάτων σε δομημένο περιβάλλον ανοιχτού χώρου
Creators: name: Σωτηρούδης, Σωτήριος Π.
Publisher: name: Aristotle University of Thessaloniki
Year: 2018
Subjects: Διάδοση Ραδιοκυμάτων
Απώλεια διαδρομής
Τεχνητά Νευρωνικά Δίκτυα
Μηχανική Μάθηση
Τυχαία Δάση
Διαφορική Εξέλιξη
Radio propagation
Path loss
Artificial Neural Networks
Machine Learning
Random Forests
Differential Evolution

description: Μελετήθηκε η χρήση Τεχνητών Νευρωνικών Δικτύων για την εκτίμηση της απώλειας διαδρομής ραδιοκυμάτων σε δομημένα περιβάλλοντα ανοιχτού χώρου. Η πρωτοτυπία της διατριβής αφορά στην εξειδίκευση του είδους της πληροφορίας που πρέπει να αντληθεί για το περιβάλλον διάδοσης βάσει των τοπικών αρχιτεκτονικών χαρακτηριστικών που το καθορίζουν. Η αξιοποίηση αυτής της πληροφορίας γίνεται από κατάλληλα Τεχνητά Νευρωνικά Δϊκτυα. Η μελέτη πραγματοποιήθηκε λαμβάνοντας ως επιπλέον παραμέτρους την συχνότητα, το ύψος του πομπού και την απόστασή του από τον δέκτη. Προκειμένου να διασφαλιστεί πως τα εσωτερικά χαρακτηριστικά των χρησιμοποιούμενων Τεχνητών Νευρωνικών Δικτύων είναι τέτοια που να επιτρέπουν την καλύτερη δυνατή αξιοποίηση της πληροφορίας στην είσοδό τους, προτάθηκαν δύο μέθοδοι για την βελτιστοποίησή τους, βασιζόμενες στην Διαφορική Εξέλιξη: η πρώτη αφορά τον καθορισμό της βέλτιστης αρχιτεκτονικής τους, ενώ η δεύτερη επιτρέπει την βελτιστοποίηση των βαρών τους, για δεδομένη εσωτερική αρχιτεκτονική. Συμπληρωματικά με τα Τεχνητά Νευρωνικά Δίκτυα, και προς σύγκριση με αυτά, χρησιμοποιήθηκε η μέθοδος μηχανικής μάθησης των Τυχαίων Δασών για τον υπολογισμό της απώλειας διαδρομής. Πέρα από την σύγκριση των αποτελεσμάτων των δύο μεθόδων προτάθηκε επιπλέον μία μέθοδος για τον συνδυασμό τους με στόχο την περαιτέρω βελτίωση της ακρίβειας πρόβλεψης.
description: The use of Artificial Neural Networks, so as to predict the propagation path loss in built-up outdoor areas, has been investigated. The novelty of the work at hand emanates from the determination of the kind of information which must be gathered from the built-up environment, according to its local architectural characteristics. That information is later fed to, and utilized from, appropriate Artificial Neural Networks. The effects of parameters such as the operating frequency, the transmitter’s height and its distance from the receiver have been investigated. Two methods of Artificial Neural Network parameter optimization, based on differential evolution, have been proposed in order to make sure that the benefits from the input information are reaped to the biggest extend possible: the former enables the determination of their optimal inner architecture, while the latter deals with optimizing the weights between the synapses, given a predetermined inner structure. Moreover, and in order to compare results with the Artificial Neural Networks, the machine learning method of Random Forests has been implemented in order to obtain path loss predictions. Apart from comparing the results between them, the combination of the two methods in a meta-model in order to obtain even better results, has been proposed.
Rearranging Edgeworth-Cornish-Fisher Expansions
Creators: name: Chernozhukov, Victor
name: Fernandez-Val, Ivan
name: Galichon, Alfred
Publisher: name: arXiv
Year: 2007
Subjects: subject: Methodology (stat.ME)
subject: Econometrics (econ.EM)
subject: FOS: Computer and information sciences
subject: FOS: Economics and business

description: This paper applies a regularization procedure called increasing rearrangement to monotonize Edgeworth and Cornish-Fisher expansions and any other related approximations of distribution and quantile functions of sample statistics. Besides satisfying the logical monotonicity, required of distribution and quantile functions, the procedure often delivers strikingly better approximations to the distribution and quantile functions of the sample mean than the original Edgeworth-Cornish-Fisher expansions.
description: 17 pages, 3 figures
title: Untersuchungen der Polarisation und anderer Eigenschaften der langperiodischen Mikroseismik
Creators: name: Walzer, Uwe
Publisher: name: Zentralinstitut für Physik der Erde
Year: 1969

description: Veröffentlichungen des Zentralinstituts Physik der Erde; 1
description: Es werden geometrische Eigenschaften der räumlichen Bahnkurven der durch die
	2 - 10s - Mikroseismik verursachten Bodenschwingungen untersucht. Dabei ergeben
	sich für Stationen im Inneren des Kontinents ebene, polarisierte Schwingungen, deren
	Polarisation von der Wetterlage über dem Nordatlantik abhängt. Davon ausgehend wird
	ein neues Verfahren zur Erhöhung des seismischen Signal-Rausch-Verhältnisses (SNR)
	entwickelt. Eine Übersicht über das Quellenproblem der Mikroseismik schließt sich an.
A fortune in cookies? : changing contexts of consumption and the emergence of the industrial palate in Hong Kong
Creators: name: MacLeod, Scott Alexander
Publisher: name: University of British Columbia
Year: 2010

description: This paper examines the process of converging and industrializing food habits in Hong Kong. It does this by examining changes in the food system as a whole, placing consumption patterns in the context of the local food system and local social formation. In turn, local dynamics are placed in a global context. It is within the global context that the geographical homogenization of available foodstuffs is occurring. It is, however, in local place where the processes and trends are manifested. The paper begins with a discussion of the research issues and questions that surround the studies of consumption, food habits and Hong Kong. There is then a section which deals with the nature of food as an industrial commodity and the nature of the world industrial food system. The logic behind the geographical homogenization is drawn out of this discussion. The paper then turns to the geographical setting of the Hong Kong case; first describing the nature of the local social formation then moving on to consider changes in the local food system in the post Second World War period. Changes in the import/export profile, the local food production economy and the local circulatory sphere are outlined. These areas exhibit a tendency to capital intensification and internationalization. Finally changes in the actual consumption patterns of the people of Hong Kong are addressed. The conclusion of the analysis is that the Hong Kong social formation and the Hong Kong food system are undergoing a radical transformation: one where globally articulated capitalist 'patterns of regulation' are coming to shape the nature of agency in regards to food consumption in the local place that is Hong Kong.
title: Durchführung spezieller geophysikalischer Analogieexperimente und ihre Deutung
Creators: name: Hänsel, Horst
name: Wilke, Hans-Joachim
Publisher: name: Zentralinstitut für Physik der Erde
Year: 1969

description: Veröffentlichungen des Zentralinstituts Physik der Erde; 2
title: Die kurzperiodischen Seismographen Typ VSJ-11 und HSJ-11
Creators: name: Teupser, Cristian
Publisher: name: Zentralinstitut für Physik der Erde
Year: 1971

description: Die Konstruktion sowie Eichung und Prüfung der kurzperiodischen elektrodynamischen Vertikal- und Horizontalseismographen VSJ-II und HSJ-II wird ausfuhrlich beschrieben. Sie basiert auf bereits friiher dargelegten eingehenden theoretischen Untersuchungen. Die Eigenperiode der Instrumente kann im Intervall von 0,5 bis 2 s eingestellt werden. Sie besitzen eine reduzierte Pendellänge von 8 cm und ein Tragheitsmoment von 2·10^5 g cm2. Methoden zur optimalen Ankopplung geeigneter Galvanometer zur Erreichung hoher Vergrößerungen mit Hilfe der aquivalenten Parameter und die Ausschaltung der Rückwirkung des Galvanometers durch frequenzabhangige Kopplung werden zusammenfassend dargestellt.
description: The design, calibration and testing of the short-period electromagnetic vertical and horizontal seismographs VSJ-II and HSJ-II are described in detail. They are based on extensive theoretical studies already previously reported. The period of the instruments is adjustable at an interval from 0.5 to 2 seconds. The instruments have а reduced pendulum length of 8 cm and а moment of inertia of 2*10^5 g cm2. Methods for optimum coupling of suitable galvanometers to obtain high magnification bу means of the equivalent parameters are summarised as well as elimination of galvanometer reaction bу frequency-dependent coupling.
description: Veröffentlichungen des Zentralinstituts Physik der Erde; 12
Signal Processing Techniques to Reduce the Limit of Detection for Thin Film Biosensors
Creators: name: Ward, Simon J.
name: Layouni, Rabeb
name: Arshavsky-Graham, Sofia
name: Segal, Ester
name: Weiss, Sharon M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Signal Processing (eess.SP)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: The ultimate detection limit of optical biosensors is often limited by various noise sources, including those introduced by the optical measurement setup. While sophisticated modifications to instrumentation may reduce noise, a simpler approach that can benefit all sensor platforms is the application of signal processing to minimize the deleterious effects of noise. In this work, we show that applying complex Morlet wavelet convolution to Fabry-Pérot interference fringes characteristic of thin film reflectometric biosensors effectively filters out white noise and low frequency reflectance variations. Subsequent calculation of an average difference in phase between the filtered analyte and reference signals enables a significant reduction in the limit of detection (LOD) enabling closer competition with current state-of-the-art techniques. This method is applied on experimental data sets of thin film porous silicon sensors (PSi) in buffered solution and complex media obtained from two different laboratories. The demonstrated improvement in LOD achieved using wavelet convolution and average phase difference paves the way for PSi optical biosensors to operate with clinically relevant detection limits for medical diagnostics, environmental monitoring, and food safety.
description: 11 pages, 3 Figures, 2 Tables
Additional file 1 of Urine D-ribose levels correlate with cognitive function in community-dwelling older adults
Creators: name: Zhu, Xinyi
name: Wei, Yan
name: He, Yingge
name: He, Rongqiao
name: Li, Juan
Publisher: name: figshare
Year: 2022
Subjects: subject: Neuroscience
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Science Policy
subject: Mental Health

description: Additional file: TableS1. Association betweenD-ribose levels and MMSE/verbal fluency in sample with D-ribose outliers (n=1766).
Macrophages as a source of tumoricidal activity (tumor-necrotizing factor)
Creators: name: Männel, D. N.
name: Moore, R. N.
name: Mergenhagen, S. E.
Publisher: name: Universität Regensburg
Year: 1980
Subjects: subject: 610 Medizin
subject: Animals
subject: Ascitic Fluid/immunology
subject: Cell Adhesion
subject: Cell Line
subject: Cytotoxicity, Immunologic
subject: Female
subject: Growth Substances/pharmacology
subject: Immunity, Cellular
subject: L Cells (Cell Line)
subject: Macrophages/immunology
subject: Mice
subject: Mycobacterium bovis/immunology
subject: Neoplasms, Experimental/immunology
subject: Spleen/immunology

description: Macrophage-enriched peritoneal exudate cells from mice infected with Mycobacterium bovis BCG, macrophage-like tumor cells (PU 5-1.8), and peritoneal macrophages propagated in vitro with macrophage growth factor released tumoricidal activity into the culture medium within 2 to 3 h after stimulation with nanogram quantities of bacterial lipopolysaccharide. The cytotoxic activities from each of the macrophage culture supernatants eluted from diethylaminoethyl-Sephacel columns at a sodium chloride concentration of 200 mM exhibited a molecular weight of 50,000 to 60,000 as estimated by gel filtration, were stable at 56 degrees C for 30 min, and were active at a pH range of 6 to 10. A rabbit antiserum directed against serum-derived cytotoxic activity (tumor-necrotizing factor) from BCG-infected and lipopolysaccharide-challenged mice inhibited all of the cytotoxic activities generated in vitro. This suggests that the macrophage-derived cytotoxins are identical with serum-derived cytotoxic factor, which further implies that the macrophage is the cellular source of tumor-necrotizing factor.
Den Ganztag im Sozialraum vermessen. Wie können ganztägige Bildungs- und Betreuungsangebote durch sozialräumliches Monitoring gesteuert und gestaltet werden?
Creators: name: Förster, André
name: Hinzen, Anna
Publisher: name: Zenodo
Year: 2024
Subjects: Bildungsmonitoring
Bildungsmanagement
Ganztag
Ganztagsbetreuung
Ganztagsschule
Sozialraum
Stadt Würzburg
Datenbasiertes Kommunales Bildungsmanagement
DKBM
Transferinitiative Kommunales Bildungsmanagement
Fachnetzwerk für kommunales Bildungsmanagement
Kommune

description: Eine qualitätsorientierte Angebotsgestaltung im Ganztag sieht eine konsequente Öffnung der Schulen in den Sozialraum vor. Wie können vertiefende Informationen über vorhandene und potenzielle Kooperationen von Ganztagsschulen mit außerschulischen Akteuren und Angeboten der non-formalen Bildung durch eigene Erhebungen gewonnen werden? Wie können ganztägige Bildungs- und Betreuungsangebote durch sozialräumliches Monitoring gesteuert und gestaltet werden?
Unquenching effects on the coefficients of the Lüscher-Weisz action
Creators: name: Hao, Zh.
name: von Hippel, G. M.
name: Horgan, R. R.
name: Mason, Q. J.
name: Trottier, H. D.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: The effects of unquenching on the perturbative improvement coefficients in the Symanzik action are computed within the framework of Lüscher-Weisz on-shell improvement. We find that the effects of quark loops are surprisingly large, and their omission may well explain the scaling violations observed in some unquenched studies.
description: 7 pages, 5 figures, uses revtex4; version to appear in Phys.Rev.D
title: The effect of propagation saw test geometries on critical cut length
Creators: name: Bergfeld, Bastian
name: Birkeland, Karl W.
name: Adam, Valentin
name: Rosendahl, Philipp L.
name: Herwijnen, Alec van
Publisher: name: Copernicus Publications
Year: 2025

description: For a slab avalanche to release, a crack in a weak snow layer beneath a cohesive snow slab has to initiate and propagate. Information on crack propagation is essential for assessing avalanche triggering potential. In the field, this information can be gathered with the propagation saw test (PST), a field test that provides valuable data on crack propagation propensity. The first PSTs were performed about 20 years ago and standards have since been established. However, there are still differences in how the PST is performed. Standards in North America require the column ends to be cut vertically, whereas in Europe they are typically cut normal to the slope. In this study, we investigate the effect of these different column geometries on the critical cut length. To this end, we conducted 27 pairs of PST experiments, each pair consisting of one PST with slope-normal cut ends and one PST with vertical-cut ends. Our experiments showed that PSTs with normal cut ends have up to 50 % shorter critical cut lengths, and the difference predominantly depends on the slope angle and slab thickness. We developed two load-based models to convert critical cut lengths between the test geometries: (i) a uniform slab model that treats the slab as one uniform layer and (ii) a layered model that accounts for stratification. For validation, we compare these models with a modern fracture mechanical model. For the rather uniform slabs of our experiments, both load-based models were in excellent agreement with measured data. For slabs with an artificial layering, the uniform load–model predictions reveal deviations from the fracture mechanical model, whereas the layered model was still in excellent agreement. This study reveals the influence that the geometry of field tests and the slope angle of the field site have on test results. It also shows that only accurately prepared field tests can be reliable and therefore meaningful. However, we provide models to correct for imprecise field test geometry effects on the critical cut length.
Inhibition of nonspecific tumoricidal activity by activated macrophages with antiserum against a soluble cytotoxic factor
Creators: name: Männel, D. N.
name: Falk, Werner
name: Meltzer, M. S.
Publisher: name: Universität Regensburg
Year: 1981
Subjects: subject: 610 Medizin
subject: Animals
subject: Cytotoxicity, Immunologic
subject: Cytotoxins/physiology
subject: Female
subject: Immune Sera/pharmacology
subject: Lipopolysaccharides/pharmacology
subject: Macrophages/immunology
subject: Male
subject: Mice
subject: Mice, Inbred C3H
subject: Mice, Inbred C57BL
subject: Mycobacterium bovis
subject: Neoplasms, Experimental/immunology
subject: Rabbits

description: Mouse peritoneal macrophages activated for tumor cytotoxicity by any of several in vivo or in vitro treatments released a soluble cytotoxin into culture fluids only after exposure to small amounts of bacterial lipopolysaccharides. This cytotoxic factor was physicochemically similar to the cytotoxic factor (tumor necrosis factor) in sera of BCG-infected mice injected with lipopolysaccharide. A rabbit antiserum against partially purified serum cytotoxic factor also inhibited the activity of macrophage-derived cytotoxic factor. Of special interest was the observation that rabbit anti-cytotoxic factor inhibited the cytotoxic activity of macrophages both in the presence and in the absence of exogenously added lipopolysaccharide. Inhibition was not complete but was consistent in all experiments. Thus, cytotoxic factor was implicated as a possible effector molecule in the nonspecific tumoricidal activity of activated macrophages.
Το ανθρώπινο θέλημα και η σωτηρία: Σπουδή στον άγιο Μάξιμο τον Ομολογητή και στον άγιο Συμεών τον Νέο Θεολόγο
Creators: name: Ιωαννίδης, Γεώργιος Ν.
Publisher: name: Aristotle University of Thessaloniki
Year: 2018
Subjects: Θέληση
Φύση
Αυτεξούσιο
Σωτηρία
Will
Nature
Self-determining
Salvation

description: Ο κεντρικός σκοπός της παρούσας διατριβής ήταν η μελέτη των εννοιών του ανθρώπινου θελήματος και της σωτηρίας μέσα από τα κείμενα των μεγάλων αγίων πατέρων Μαξίμου του Ομολογητού και Συμεών του Νέου Θεολόγου. Καταρχάς, επιχειρήθηκε στην εισαγωγή η διερεύνηση των προαναφερθέντων εννοιών στην πατερική γραμματεία μέχρι και τον 7αι. μ. Χ. Στο κυρίως μέρος μελετώνται οι έννοιες του αυτεξουσίου, της θέλησης, της προαίρεσης, της γνώμης και της φύσης του ανθρώπου, τόσο στον άγιο Μάξιμο όσο και στον άγιο Συμεών. Ομοίως, εξετάζονται και ερμηνεύονται στα κείμενά τους το ανθρώπινο φυσικό θέλημα του Χριστού έναντι του αντίστοιχου ανθρώπινου γνωμικού, η ανθρώπινη πτώση, καθώς και οι έννοιες της ασκητικής παιδαγωγίας και των αρετών ως θείων δωρεών. Μέσα το πλαίσιο αυτό ερμηνεύονται συζευκτικά οι απόψεις των συγκεκριμένων αγίων στα θέματα της «πεπτωκυΐας» προαίρεσης, των παθών καθώς και ο τρόπος αποκάθαρσης του έλλογου νου από την μεταπτωτική ροπή προς τις εφάμαρτες καταστάσεις. Εν κατακλείδι, καταδεικνύεται το κοινό πνεύμα των αγίων στα συγκεκριμένα θέματα, ως οδοδείκτης της ορθής χριστιανικής παιδαγωγίας.
description: The central objective of the current dissertation is to study the terms of human will and salvation in the texts of the great Church Fathers Maximus the Confessor and Symeon the New Theologian. Firstly, we attempted to explore the above mentioned terms throughout the patristic literature up to the 7th century a.d. In the main part, we study the terms of self-determining, will, prohairesis and gnome of human nature in the writings of both saints Maximus and Symeon. Moreover, we examine and interpret in the same texts the human natural will of Christ in contrast with the human gnomic will, the human fall along with the terms of ascetical practice and virtues as divine gifts. Within this context we interpret conjunctively the analysis of the specific saints on matters such as the fallen prohairesis, passions and the purification of the rational mind from the post-fall inclination towards sinful situations. Conclusively, we wish to demonstrate the mutual spirit of the saints concerning the above mentioned aspects of human nature as a compelling example of true christian life.
Lefschetz fibrations, intersection numbers, and representations of the framed braid group
Creators: name: Massuyeau, Gwenael
name: Oancea, Alexandru
name: Salamon, Dietmar A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Geometric Topology (math.GT)
subject: Symplectic Geometry (math.SG)
subject: FOS: Mathematics
subject: 14D05, 20F36

description: We examine the action of the fundamental group $Γ$ of a Riemann surface with $m$ punctures on the middle dimensional homology of a regular fiber in a Lefschetz fibration, and describe to what extent this action can be recovered from the intersection numbers of vanishing cycles. Basis changes for the vanishing cycles result in a nonlinear action of the framed braid group $\widetilde{\mathcal B}$ on $m$ strings on a suitable space of $m\times m$ matrices. This action is determined by a family of cohomologous 1-cocycles ${\mathcal S}_c:\widetilde{\mathcal B}\to GL_m({\mathbb{Z}}[Γ])$ parametrized by distinguished configurations $c$ of embedded paths from the regular value to the critical values. In the case of the disc, we compare this family of cocycles with the Magnus cocycles given by Fox calculus and consider some abelian reductions giving rise to linear representations of braid groups. We also prove that, still in the case of the disc, the intersection numbers along straight lines, which conjecturally make sense in infinite dimensional situations, carry all the relevant information.
description: 62 pages, 7 figures; v5: minor modifications with respect to v4
Fragmentation model and strewn field estimation for meteoroids entry
Creators: name: Limonta, Simone
name: Trisolini, Mirko
name: Frey, Stefan
name: Colombo, Camilla
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Numerical Analysis (math.NA)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: Everyday thousands of meteoroids enter the Earth's atmosphere. The vast majority burn up harmlessly during the descent, but the larger objects survive, occasionally experiencing intense fragmentation events, and reach the ground. These events can pose a threat for a village or a small city; therefore, models of asteroid fragmentation, along with accurate post-breakup trajectory and strewn field estimation, are needed to enable a reliable risk assessment. In this work, a methodology to describe meteoroids entry, fragmentation, descent, and strewn field is presented by means of a continuum approach. At breakup, a modified version of the NASA Standard Breakup Model is used to generate the distribution of the fragments in terms of their area-to-mass ratio and ejection velocity. This distribution, combined with the meteoroid state, is directly propagated using the continuity equation coupled with the non-linear entry dynamics. At each time step, the probability density evolution of the fragments is reconstructed using GMM interpolation. Using this information is then possible to estimate the meteoroid's ground impact probability. This approach departs from the current state-of-the-art models: it has the flexibility to include large fragmentation events while maintaining a continuum formulation for a better physical representation of the phenomenon. The methodology is also characterised by a modular structure, so that updated asteroids fragmentation models can be readily integrated into the framework, allowing a continuously improving prediction of re-entry and fragmentation events. The propagation of the fragments' density and its reconstruction, currently considering only one fragmentation point, is first compared against Monte Carlo simulations, and then against real observations. Both deceleration due to atmospheric drag and ablation due to aerothermodynamics effects have been considered.
description: 29 pages, 26 figures, published in Icarus
Students' conceptual understanding of calculus
Creators: name: Gooya, Zahra
Publisher: name: University of British Columbia
Year: 2010

description: The purpose of this study was to identify the nature of students' conceptual understanding of two concepts of calculus namely, derivative and function. As a way of collecting data two methods were employed: (a) modification of Piagetean clinical interview; and, (b) tutorial sessions. Whenever the students seemed to be confused about the issues being discussed, the researcher provided instructions through the tutorial sessions. The analysis of data was done by developing individual profiles and by response categories. It was found that the interview methodology was effective in revealing some aspects of students' concept images. The students were found to have little meaningful understanding of derivative. A number of students held proper concept images of function which should lead to the development of an appropriate concept definition. It was also evident from the study that students had adequate skill in using algorithm to solve problems. The results of the study would be useful to the instructors of calculus. It was suggested that introducing a concept by its formal definition would contribute to students' confusions and difficulties. Yet if a concept is presented by means of meaningful examples, students had better opportunity to develop their concept images. Thus leading them to form concept definitions. The researcher strongly recommended that more challenging exercises be posed to the students in problem-solving situations.
Sensitivity Analysis of the Orthoglide, a 3-DOF Translational Parallel Kinematic Machine
Creators: name: Caro, Stéphane
name: Wenger, Philippe
name: Bennis, Fouad
name: Chablat, Damien
Publisher: name: arXiv
Year: 2007
Subjects: subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: This paper presents a sensitivity analysis of the Orthoglide, a 3-DOF translational Parallel Kinematic Machine. Two complementary methods are developed to analyze its sensitivity to its dimensional and angular variations. First, a linkage kinematic analysis method is used to have a rough idea of the influence of the dimensional variations on the location of the end-effector. Besides, this method shows that variations in the design parameters of the same type from one leg to the other have the same influence on the end-effector. However, this method does not take into account the variations in the parallelograms. Thus, a differential vector method is used to study the influence of the dimensional and angular variations in the parts of the manipulator on the position and orientation of the end-effector, and particularly the influence of the variations in the parallelograms. It turns out that the kinematic isotropic configuration of the manipulator is the least sensitive one to its dimensional and angular variations. On the contrary, the closest configurations to its kinematic singular configurations are the most sensitive ones to geometrical variations.
Characterization of Skipper CCDs for Cosmological Applications
Creators: name: Drlica-Wagner, Alex
name: Villalpando, Edgar Marrufo
name: O'Neil, Judah
name: Estrada, Juan
name: Holland, Stephen
name: Kurinsky, Noah
name: Li, Ting S.
name: Moroni, Guillermo Fernandez
name: Tiffenberg, Javier
name: Uemura, Sho
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We characterize the response of a novel 250 $μ$m thick, fully-depleted Skipper Charged-Coupled Device (CCD) to visible/near-infrared light with a focus on potential applications for astronomical observations. We achieve stable, single-electron resolution with readout noise $σ\sim 0.18$ e$^{-}$ rms/pix from 400 non-destructive measurements of the charge in each pixel. We verify that the gain derived from photon transfer curve measurements agrees with the gain calculated from the quantized charge of individual electrons to within < 1%. We also perform relative quantum efficiency measurements and demonstrate high relative quantum efficiency at optical/near-infrared wavelengths, as is expected for a thick, fully depleted detector. Finally, we demonstrate the ability to perform multiple non-destructive measurements and achieve sub-electron readout noise over configurable subregions of the detector. This work is the first step toward demonstrating the utility of Skipper CCDs for future astronomical and cosmological applications.
description: 14 pages, 6 figures, 2 tables
Δυνατότητες γεωμετρίας και διασφάλιση ποιότητας της επιλεκτικής συσσωμάτωσης με λέιζερ κατά την ανάπτυξη αιχμηρών φαρμακευτικών συστημάτων για εντερική χορήγηση
Creators: name: Γκαραγκούνης, Άγγελος Ευσταθίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2023
Subjects: Επιλεκτική συσσωμάτωση με λέιζερ
Τρισδιάστατη εκτύπωση
Εντερική χορήγηση φαρμάκων
Selective laser sintering
3D printing
Colonic drug delivery

description: Η προσθετική μηχανική είναι μια καινοτόμα θεραπεία για πολλά προβλήματα και προκλήσεις που αντιμετωπίζει η φαρμακευτική βιομηχανία εδώ και χρόνια, όπως η εντερική χορήγηση φαρμάκων και η χαμηλή βιοδιαθεσιμότητα. Ο σκοπός αυτής της μελέτης ήταν η διερεύνηση των γεωμετρικών δυνατοτήτων της επιλεκτικής συσσωμάτωσης με λέιζερ (ΕΣΛ) μέσα από την ανάπτυξη δοσολογικών μορφών με αυξημένο χρόνο παραμονής σε εντερικές περιοχές. Αρκετά υλικά ελέγχθηκαν ως προς την εκτυπωσιμότητά τους, η πολυβινυλική αλκοόλη έδειξε επιθυμητά χαρακτηριστικά ως συνδέτης κατά την εκτύπωση ΕΣΛ, ενώ η εκτύπωση ήταν δυνατή χωρίς την προσθήκη επιπλέον εκδόχου συσσωμάτωσης. Τα υλικά και τα εκτυπωμένα προϊόντα ελέγχθηκαν ως προς τις ρεολογικές και μηχανικές ιδιότητές τους. Οι αιχμηρές γεωμετρίες υποτέθηκε ότι δίνουν τη δυνατότητα για διάτρηση και αγκίστρωση στο δίκτυο μυκίνης επιτρέποντας την αύξηση του χρόνου παραμονής και της βιοδιαθεσιμότητας. Επιπλέον, σκόπιμες δονήσεις και άλλες παράμετροι μελετήθηκαν ως προς τη διασφάλιση ποιότητας των εκτυπωμένων προϊόντων. Η εκτύπωση ΕΣΛ είναι μια αρκετά ελκυστική μέθοδος για την ανάπτυξη συστημάτων χορήγησης φαρμάκων με ιδιότητες που δεν έχουν επιτευχθεί ακόμη. Προσφέρει ένα μεγάλο εύρος δυνατοτήτων για τη διασφάλιση της ποιότητας των προϊόντων επτρέποντας την υιοθέτησή της από τη φαρμακευτική ως μια καλώς καθορισμένη μέθοδος.
description: Additive manufacturing has been a breakthrough therapy for the pharmaceutical industry raising opportunities for long-time challenges, such as colonic drug delivery. The aim of this study is to explore design capabilities of selective laser sintering (SLS) through the development of dosage forms that provide increased retention time in intestinal areas. Multiple materials were tested for their printability. Polyvinyl alcohol (PVA) yielded preferable attributes as a binder, while SLS printing was feasible in the absence of sintering agents. The raw materials and printed products were analyzed for their rheological and mechanical properties, respectively. Spiked geometries have been hypothesized to penetrate and hook into the mucus network allowing increased retention time and increased bioavailability. In addition, intentional vibrating printing steps and other process parameters were explored and allowed product quality assurance, with consistent and tunable properties. SLS printing is an appealing technology for the development of drug delivery systems with attributes that remain unseen. It offers a wide range of opportunities for product quality assurance, allowing its adoption in pharmaceutics as a well-established manufacturing method.
Vacuum Polarization and Screening of Supercritical Impurities in Graphene
Creators: name: Shytov, A. V.
name: Katsnelson, M. I.
name: Levitov, L. S.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Screening of charge impurities in graphene is analyzed using the exact solution for vacuum polarization obtained from the massless Dirac-Kepler problem. For the impurity charge below certain critical value no density perturbation is found away from the impurity, in agreement with the linear response theory result. For supercritical charge, however, the polarization distribution is shown to have a power law profile, leading to screening of the excess charge at large distances. The Dirac-Kepler scattering states give rise to standing wave oscillations in the local density of states which appear and become prominent in the supercritical regime.
description: 5 pages, 2 figures