cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Mapping of modern pyroclastic deposits with ground penetrating radar: experimental, theoretical and field results
Creators: name: Rust, Alison C.
Publisher: name: University of British Columbia
Year: 2009

description: This thesis explores the utility of ground-penetrating radar (GPR) in mapping and characterizing young pyroclastic deposits. In particular, laboratory measurements examine the relationship between porosity and dielectric constant of volcanic rocks. Simulations and field studies demonstrate how GPR data can be used to both image, and quantify, relative porosity variations in pyroclastic deposits. The laboratory results (Chapter 2) indicate a strong and definite relationship between total porosity and dielectric constant of dry, felsic to intermediate volcanic rocks. The trend formed by these data is remarkably tight and coherent, especially considering the samples derive from five deposits and two volcanoes. Chapter 3 models the propagation of a radar wave through a welded pyroclastic flow deposit of variable porosity using the porosity-dielectric constant relationship from Chapter 2. Although porosity changes are gradational, the deposit generates reflections. Distinctive signals correspond to portions with essentially constant porosity or areas where porosity changes with depth at a moderate rate. GPR data were collected on sections of pyroclastic fall and welded and unwelded pyroclastic flow deposits in Central Oregon (Chapter 4). Airfall and pyroclastic flow deposits can be distinguished on the basis of their distinct geophysical character. For example, the same characteristic signals for regions of changing porosity with depth and regions of constant porosity, which were recognized in the modeling (Chapter 3), are seen in the GPR data. The results indicate that GPR can be used to map the intensity of welding and separate zones of uniform welding from zones of variable welding. Velocity analysis of common midpoint (CMP) surveys is shown to aid in mapping facies variations, as well as, converting travel times into depths in radargrams. GPR is also found to be useful in delimiting deposit thicknesses and geometries away from exposure.
Συμβολή στη μελέτη της γεωφυσικής δομής και της απόκρισης των επιφανειακών στρωμάτων της Γης με τη χρήση δεδομένων δικτύων μικροθορύβου και σεισμικών καταγραφών:
Creators: name: Ανθυμίδης, Μάριος Μιχαήλ
Publisher: name: Aristotle University of Thessaloniki
Year: 2008
Subjects: Εδαφικός θόρυβος
Τοπικές εδαφικές συνθήκες
Γεωφυσική δομή
Αριθμητική προσομοίωση
Σεισμικές καταγραφές
Ειδικά δίκτυα σεισμομέτρων
Ambient noise
Site effects
Geophysical structure
Numerical simulation
Earthquake recordings
ARRAY technique

description: Η γνώση της γεωφυσικής δομής και της απόκρισης των επιφανειακών γεωλογικών σχηματισμών σε μία περιοχή είναι απαραίτητη προϋπόθεση για την αποτελεσματική διαχείριση του σεισμικού κινδύνου. Για αυτό το σκοπό πραγματοποιήθηκαν μετρήσεις εδαφικού θορύβου με τη χρήση μονού σταθμού καταγραφής και με ειδικά δίκτυα σεισμομέτρων στο πολεοδομικό συγκρότημα των Γρεβενών (Βορειοδυτική Ελλάδα). Επιπλέον εγκαταστάθηκε προσωρινό τοπικό δίκτυο σεισμομέτρων με στόχο την καταγραφή σεισμικών γεγονότων. Η ανάλυση σεισμικών καταγραφών μας παρέχει την πραγματική ενίσχυση της εδαφικής κίνησης σε περίπτωση σεισμικού γεγονότος και τα αποτελέσματά της χρησιμοποιήθηκαν για τον έλεγχο αξιοπιστίας των μεθόδων εδαφικού θορύβου. Σε θέσεις όπου υπήρχαν διαθέσιμες γεωλογικές, γεωτεχνικές και γεωφυσικές πληροφορίες για την υπεδάφια δομή, πραγματοποιήθηκε αριθμητική προσομοίωση εδαφικού θορύβου με την παραγωγή συνθετικών καταγραφών. Έτσι, έγινε δυνατή η ερμηνεία των αποτελεσμάτων των μεθόδων εδαφικού θορύβου και η τεκμηρίωση ρεαλιστικών παραμέτρων της υπεδάφιας δομής για την περιοχή μελέτης. Τέλος, έγινε προσπάθεια χαρακτηρισμού των τοπικών εδαφικών συνθηκών σύμφωνα με τις διατάξεις του αντισεισμικού κανονισμού NEHRP (2000). Η χωρική επέκταση του χαρακτηρισμού σε όλη την περιοχή μελέτης πραγματοποιήθηκε με συσχέτιση του μέσου αριθμού κρούσεων της πρότυπης δοκιμής διεισδύσεως (SPT) με παραμέτρους που προκύπτουν από την ανάλυση εδαφικού θορύβου.
description: Knowledge of the geophysical structure and response of the upper sedimentary layers in one area is essential for sufficient seismic risk mitigation. For this purpose ambient noise measurements were performed inside the urban area of Grevena (Northwest Greece) with the implementation of the Horizontal to Vertical Spectral Ratio (HVSR) method and array technique. Moreover, a temporary seismic network was installed in selected sites inside Grevena town, in order to record earthquake events. Results from earthquake recordings analysis have been used to check the reliability of ambient noise methods. Numerical simulation of ambient noise allowed validating the geophysical parameters of the subsurface structure. Finally, site classification according to NEHRP (2000) recommended provisions occurred in sites where information about the subsurface structure was available. Spatial distribution of the classification achieved with correlation of geotechnical and ambient noise parameters. Thus, a preliminary map of site classification produced for the study area.
Additional file 1 of Self-administered electroencephalography-based sleep assessment: compliance and perceived feasibility in children and adults
Creators: name: Pedersen, Jesper
name: Rasmussen, Martin Gillies Banke
name: Olesen, Line Grønholt
name: Kristensen, Peter Lund
name: Grøntved, Anders
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Neuroscience
subject: Physiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: Geology
subject: FOS: Earth and related environmental sciences
subject: 59999 Environmental Sciences not elsewhere classified
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Additional file 1 How to use our custom-made elastic pocket with the Zmachine insight+. This file elaborates how our custom-made elastic pocket is applied to the Zmachine insight+. (PDF 4410 kb)
Particle Track Classification Using Quantum Associative Memory
Creators: name: Quiroz, Gregory
name: Ice, Lauren
name: Delgado, Andrea
name: Humble, Travis S.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Pattern recognition algorithms are commonly employed to simplify the challenging and necessary step of track reconstruction in sub-atomic physics experiments. Aiding in the discrimination of relevant interactions, pattern recognition seeks to accelerate track reconstruction by isolating signals of interest. In high collision rate experiments, such algorithms can be particularly crucial for determining whether to retain or discard information from a given interaction even before the data is transferred to tape. As data rates, detector resolution, noise, and inefficiencies increase, pattern recognition becomes more computationally challenging, motivating the development of higher efficiency algorithms and techniques. Quantum associative memory is an approach that seeks to exploits quantum mechanical phenomena to gain advantage in learning capacity, or the number of patterns that can be stored and accurately recalled. Here, we study quantum associative memory based on quantum annealing and apply it to the particle track classification. We focus on discrimination models based on Ising formulations of quantum associative memory model (QAMM) recall and quantum content-addressable memory (QCAM) recall. We characterize classification performance of these approaches as a function detector resolution, pattern library size, and detector inefficiencies, using the D-Wave 2000Q processor as a testbed. Discrimination criteria is set using both solution-state energy and classification labels embedded in solution states. We find that energy-based QAMM classification performs well in regimes of small pattern density and low detector inefficiency. In contrast, state-based QCAM achieves reasonably high accuracy recall for large pattern density and the greatest recall accuracy robustness to a variety of detector noise sources.
description: 13 pages
Minutes from meeting of the Trustees of the Winfield and Okanagan Centre Irrigation District, April 14, 1941
Creators: name: Trustees Of The Winfield And Okanagan Centre Irrigation District
Publisher: name: The University of British Columbia
Year: 2017

description: Minutes from meeting of the Trustees of the Winfield and Okanagan Centre Irrigation District, dated April 14, 1941, regarding the proposed addition to the Beaver Lake dam.
Aspirin vs Placebo as Adjuvant Therapy for Breast Cancer
Creators: name: Weiss, Anna
name: Openshaw, Thomas H.
name: Hahn, Olwen M.
name: Partridge, Ann H.
name: Carey, Lisa A.
name: Winer, Eric P.
name: Irvin, William J.
name: Ballman, Karla V.
name: Chen, Wendy Y.
name: Pohlmann, Paula R.
name: Briccetti, Frederick M.
name: Visvanathan, Kala
name: Symington, Banu
name: Holmes, Michelle D.
Publisher: name: American Medical Association (AMA)
Year: 2024

description: Importance: Observational studies of survivors of breast cancer and prospective trials of aspirin for cardiovascular disease suggest improved breast cancer survival among aspirin users, but prospective studies of aspirin to prevent breast cancer recurrence are lacking.
Objective: To determine whether aspirin decreases the risk of invasive cancer events among survivors of breast cancer.
Design, Setting, and Participants: A011502, a phase 3, randomized, placebo-controlled, double-blind trial conducted in the United States and Canada with 3020 participants who had high-risk nonmetastatic breast cancer, enrolled participants from 534 sites from January 6, 2017, through December 4, 2020, with follow-up to March 4, 2023.
Interventions: Participants were randomized (stratified for hormone receptor status [positive vs negative], body mass index [≤30 vs >30], stage II vs III, and time since diagnosis [<18 vs ≥18 months]) to receive 300 mg of aspirin (n = 1510) or placebo once daily (n = 1510) for 5 years.
Main Outcomes and Measures: The primary outcome was invasive disease-free survival. Overall survival was a key secondary outcome.
Results: A total of 3020 participants were randomized when the data and safety monitoring committee recommended suspending the study at the first interim analysis because the hazard ratio had crossed the prespecified futility bound. By median follow-up of 33.8 months (range, 0.1-72.6 months), 253 invasive disease-free survival events were observed (141 in the aspirin group and 112 in the placebo group), yielding a hazard ratio of 1.27 (95% CI, 0.99-1.63; P = .06). All invasive disease-free survival events, including death, invasive progression (both distant and locoregional), and new primary events, were numerically higher in the aspirin group, although the differences were not statistically significant. There was no difference in overall survival (hazard ratio, 1.19; 95% CI, 0.82-1.72). Rates of grades 3 and 4 adverse events were similar in both groups.
Conclusion and Relevance: Among participants with high-risk nonmetastatic breast cancer, daily aspirin therapy did not improve risk of breast cancer recurrence or survival in early follow-up. Despite its promise and wide availability, aspirin should not be recommended as an adjuvant breast cancer treatment.
Trial Registration: ClinicalTrials.gov Identifier: NCT02927249.
Επίδραση της γιββερελλίνης GA3 και της συνθετικής κυτοκινίνης CPPu στα χαρακτηριστικά της σταφύλης και στα επίπεδα ενδογενούς κυτοκινίνης της ποικιλίας της αμπέλου "Ελλάς":
Creators: name: Εμμανουηλίδου, Μαρία Γεωργίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2008
Subjects: Αμπέλι (Vitis vinifera)
Γιββερελικό οξύ
Συνθετικές κυτοκίνινες
Επίπεδα κυτοκινίνης
A3
CPPU
Vitis vinifera

description: Μελέτη της επίδρασης του γιββερελικού οξέος και της συνθετικής κυτοκινίνης CPPU, σε χαρακτηριστικά του γλεύκους, στην αντοχή των ραγών στη θραύση. Μελέτη και εξήγηση των αλλαγών στα επίπεδα ενδογενών κυτοκινινών στις ταξιανθίες μετά την επίδραση των εξωγενών ρυθμιστών της αύξησης.
description: Study of the effect of two plant growth regulations (GA3 and CPPU) on the characteristics of the bunch, the grapes, and the quality of them. Comparison of the levels of the cytokins in the plant after the applications of GA3 and CPPU and conection of them with the characteristics.
Chaotic scattering through coupled cavities
Creators: name: Takahashi, Kazutaka
name: Aono, Tomosuke
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We study the chaotic scattering through an Aharonov-Bohm ring containing two cavities. One of the cavities has well-separated resonant levels while the other is chaotic, and is treated by random matrix theory. The conductance through the ring is calculated analytically using the supersymmetry method and the quantum fluctuation effects are numerically investigated in detail. We find that the conductance is determined by the competition between the mean and fluctuation parts. The dephasing effect acts on the fluctuation part only. The Breit-Wigner resonant peak is changed to an antiresonance by increasing the ratio of the level broadening to the mean level spacing of the random cavity, and the asymmetric Fano form turns into a symmetric one. For the orthogonal and symplectic ensembles, the period of the Aharonov-Bohm oscillations is half of that for regular systems. The conductance distribution function becomes independent of the ensembles at the resonant point, which can be understood by the mode-locking mechanism. We also discuss the relation of our results to the random walk problem.
description: 13 pages, 9 figures; minor changes
Enhanced coherence in superconducting circuits via band engineering
Creators: name: Chirolli, Luca
name: Moore, Joel E.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Superconductivity (cond-mat.supr-con)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In superconducting circuits interrupted by Josephson junctions, the dependence of the energy spectrum on offset charges on different islands is $2e$ periodic through the Aharonov-Casher effect and resembles a crystal band structure that reflects the symmetries of the Josephson potential. We show that higher-harmonic Josephson elements described by a $\cos(2φ)$ energy-phase relation provide an increased freedom to tailor the shape of the Josephson potential and design spectra featuring multiplets of flat bands and Dirac points in the charge Brillouin zone. Flat bands provide noise-insensitive quantum states, and band engineering can help improve the coherence of the system. We discuss a modified version of a flux qubit that achieves in principle no decoherence from charge noise and introduce a flux qutrit that shows a spin-one Dirac spectrum and is simultaneously quote robust to both charge and flux noise.
description: 5 pages, 4 figures
Additional file 3 of Self-administered electroencephalography-based sleep assessment: compliance and perceived feasibility in children and adults
Creators: name: Pedersen, Jesper
name: Rasmussen, Martin Gillies Banke
name: Olesen, Line Grønholt
name: Kristensen, Peter Lund
name: Grøntved, Anders
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Neuroscience
subject: Physiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: Geology
subject: FOS: Earth and related environmental sciences
subject: 59999 Environmental Sciences not elsewhere classified
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Additional file 3. Sample size calculations. The table above shows sample size calculations (n per group) for parallel group randomized controlled trials based on the standard deviations of the baseline scores, follow-up scores and the Pearson correlation between these scores. Sample sizes are presented for trials with minimal detectable between group differences of 10, 20, and 30 min of total sleep time. These estimations were computed with 0.80 power and an alpha level of 0.05. These estimations were computed based on using the follow-up measure as outcome including adjustment for the outcome at baseline (similar to an analysis of co-variance). The calculations were conducted using the sampsi command in STATA 16 using the ancova method.
Set theoretical Representations of Integers, I
Creators: name: Ferbus-Zanda, Marie
name: Grigorieff, Serge
Publisher: name: arXiv
Year: 2008
Subjects: subject: Logic (math.LO)
subject: Computational Complexity (cs.CC)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: We reconsider some classical natural semantics of integers (namely iterators of functions, cardinals of sets, index of equivalence relations), in the perspective of Kolmogorov complexity. To each such semantics one can attach a simple representation of integers that we suitably effectivize in order to develop an associated Kolmogorov theory. Such effectivizations are particular instances of a general notion of "self-enumerated system" that we introduce in this paper. Our main result asserts that, with such effectivizations, Kolmogorov theory allows to quantitatively distinguish the underlying semantics. We characterize the families obtained by such effectivizations and prove that the associated Kolmogorov complexities constitute a hierarchy which coincides with that of Kolmogorov complexities defined via jump oracles and/or infinite computations. This contrasts with the well-known fact that usual Kolmogorov complexity does not depend (up to a constant) on the chosen arithmetic representation of integers, let it be in any base unary, binary et so on. Also, in a conceptual point of view, our result can be seen as a mean to measure the degree of abstraction of these diverse semantics.
description: 56 pages
Additional file 2 of Self-administered electroencephalography-based sleep assessment: compliance and perceived feasibility in children and adults
Creators: name: Pedersen, Jesper
name: Rasmussen, Martin Gillies Banke
name: Olesen, Line Grønholt
name: Kristensen, Peter Lund
name: Grøntved, Anders
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Neuroscience
subject: Physiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: Geology
subject: FOS: Earth and related environmental sciences
subject: 59999 Environmental Sciences not elsewhere classified
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Additional file 2 Sleep parameters – Medians and inter quartile ranges. The table above shows medians (interquartile range) for participants with complete sleep data at baseline and follow-up. Evening restrict n=9 adults, n=7 children. General restrict n=9 adults, n=6 children. Light sleep corresponds to non-REM sleep stage N1 and N2. Deep sleep corresponds to non-REM sleep stage N3.
Σεισμική απόκριση επιχωμάτων σε χαλαρό υπέδαφος θεμελίωσης
Creators: name: Μυκονίου, Χριστίνα Γεώργιου
Publisher: name: Aristotle University of Thessaloniki
Year: 2008
Subjects: Επιχώματα οδών ταχείας κυκλοφορίας
Μαλακά-χαλαρά εδάφη
Παραμένουσες μετακινήσεις
Εμπειρικές σχέσεις
Παραμετρική ανάλυση
highway embankments
Soft soils
Permanent displacements
Empirical methods
Nonlinear analysis

description: Αντικείμενο της παρούσας διπλωματικής εργασίας αποτελεί η μελέτη της σεισμικής συμπεριφοράς επιχωμάτων που θεμελιώνονται σε μαλακά εδάφη ή σε εδάφη επιδεκτικά σε ρευστοποίηση. Οι διατομές των επιχωμάτων που χρησιμοποιήθηκαν προέρχονται από τυπικές διατομές που συναντώνται σε οδούς ταχείας κυκλοφορίας, π.χ. της Εγνατία οδού. Κύριος στόχος της εργασίας είναι ο προσδιορισμός βασικών παραμέτρων που επηρεάζουν τη σεισμική απόκριση των επιχωμάτων (π.χ. δεσπόζουσα περίοδος σεισμικής διέγερσης, ιδιοπερίοδος επιχώματος, ιδιότητες υπεδάφους, κλπ). Ιδιαίτερη έμφαση δίνεται στον προσδιορισμό των μόνιμων μετακινήσεων των επιχωμάτων υπό τυπικές σεισμικές διεγέρσεις τόσο του ελληνικού όσο και του διεθνούς χώρου. Οι παραμένουσες μετακινήσεις των επιχωμάτων, που προκύπτουν από καθαρή αστοχία του χαλαρού εδάφους θεμελίωσης, υπολογίζονται τόσο με εμπειρικές σχέσεις, όσο και με τη χρήση κατάλληλου λογισμικού μη γραμμικής δισδιάστατης ανάλυσης. Η μελέτη εδαφικής απόκρισης πραγματοποιείται με το λογισμικό Cyclic ED σε δύο ομάδες επιχωμάτων. Τέλος, δίδονται τα πιθανά όρια των παραμενουσών μετακινήσεων που αναμένονται για τυπικά επιχώματα στην περίπτωση σεισμικού κραδασμού σύμφωνα με τα δεδομένα και τις παραδοχές της παρούσας εργασίας. Τα αποτελέσματα αυτά είναι πολύ χρήσιμα στον καθορισμό της σεισμικής τρωτότητας επιχωμάτων στην περίπτωση μελετών σεισμικής διακινδύνευσης.
description: The aim of the present dissertation is to present the seismic behaviour of highway embankments resting on soft, deformable soils or on soils that can be liquefied. Basic parameters that affect the seismic response of the embankments are determined, such as the period of the embankment, characteristics of the soil foundation, the fundamental period of ground motion, etc. An estimation of the embankments permanent displacements due to the seismic vibration is attempted. The permanent deformation is calculated using both empirical methods and nonlinear analysis. The seismic ground response analysis is carried out using Cyclic ED in two separate groups of embankments with totally different characteristics. The final results provide boundaries of expected permanent displacements of embankments due to earthquake.
Lymph node metrics following neoadjuvant therapy to refine patient selection for adjuvant chemotherapy in resected pancreatic cancer: A multi‐institutional analysis
Creators: name: Merchant, Nipun B.
name: Wilson, Gregory C.
name: Maithel, Shishir K.
name: Snyder, Rebecca A.
name: Kooby, David A.
name: Zafar, Syed Nabeel
name: Patel, Manan
name: Shah, Ankit
name: Abbott, Daniel
name: Datta, Jashodeep
name: Dickey, Erin
name: Hammill, Chet
name: Amirian, Haleh
name: Hester, Caitlin A.
name: Parikh, Alexander A.
name: LeCompte, Michael T.
name: Martos, Mary P.
name: Box, Edmond W.
name: Kim, Hong J.
name: Ogobuiro, Ifeanyichukwu
name: Ahmad, Syed A.
Publisher: name: Wiley
Year: 2024

description: BACKGROUND: In patients with localized pancreatic ductal adenocarcinoma (PDAC) undergoing neoadjuvant therapy (NAT) and resection, selection of adjuvant chemotherapy (AC) is typically guided by high-risk features on histopathologic examination. We evaluated the interaction between post-NAT lymph node metrics and AC receipt on survival.
METHODS: Patients who received NAT followed by pancreatectomy (2010-2020) at seven centers were reviewed. Overall survival (OS) in patients receiving AC or not was stratified by lymph node positivity (LNP) or lymph node ratio (LNR) dichotomized at 0.1. Cox models evaluated the independent association between these nodal metrics, AC receipt, and OS.
RESULTS: Of 464 patients undergoing NAT and resection, 264 (57%) received AC. Patients selected for AC were younger (median 63 vs. 67 years; p < 0.001), received shorter duration of NAT (2.8 vs. 3.2 months; p = 0.01), had fewer postoperative complications (Clavien-Dindo grade > 3: 1.2% vs. 11.7%; p < 0.001), and lower rates of pathologic complete response (4% vs. 11%; p = 0.01). The median number of nodes evaluated was similar between cohorts (n = 20 in both; p = 0.9). Post-NAT LNP rates were not different, and median LNR was 0.1, in AC and non-AC cohorts. Both LNP (hazard ratio [HR]: 2.1, p < 0.001) and LNR (0 < LNR ≤ 0.1: HR: 1.98, p = 0.002; LNR > 0.1: HR 2.46, p < 0.001) were independently associated with OS on Cox modeling, although receipt of AC was not associated with improved OS (median 30.6 vs. 29.4 months; p = 0.2). In patients with LNR > 0.1, receipt of AC was associated with significantly longer OS compared to non-AC (24 vs. 20 months, respectively; p = 0.04).
CONCLUSIONS: LNR following NAT, not simply nodal positivity, may be useful to refine selection of AC in resected PDAC.
Συντήρηση μοσχευμάτων κερατοειδούς και κερατοπλαστική:
Creators: name: Κεχαγιά, Ευφημία Κωνσταντίνου
Publisher: name: Aristotle University of Thessaloniki
Year: 2008
Subjects: Κερατοειδής
Κερατοπλαστική
Επιθήλιο
Ενδοθήλιο
Διαμπερής κερατοπλαστική
Στρώμα
Cornea
Lamellar keratoplasty
Keratoplasty
Epithelium
Endothelium
Stroma

description: Γίνεται ιστορική αναδρομή της μεταμόσχευσης του κερατοειδούς, αναφέρεται η ανατομία και η φυσιολογία του κερατοειδούς. Στη συνέχεια αναφέρονται τα μέσα συντήρησης του κερατοειδούς και τέλος η διαμπερής και η τμηματική κερατοπλαστική.
description: There is a referral in the history of corneal transplantation. Following is the anatomy and the physiology of the cornea. Then, there is reterral to the storage media of the donor cornea. Last, we refer to the keratoplasty, full and lamellar.
Die Bulgarische Orthodoxe Kirche nach der Wende 1989
Creators: name: Sevova-Illert, Anguelina
name: Illert, Martin
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 53 Nr. 1 (2004): Ökumenische Rundschau, Band 53, Heft 1
Multi-Hamiltonian Structures on Beauville's Integrable System and Its Variant
Creators: name: Inoue, Rei
name: Konishi, Yukiko
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mathematical Physics (math-ph)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences
subject: 37J35; 14H70; 14H40

description: We study Beauville's completely integrable system and its variant from a viewpoint of multi-Hamiltonian structures. We also relate our result to the previously known Poisson structures on the Mumford system and the even Mumford system.
description: This is a contribution to the Vadim Kuznetsov Memorial Issue on Integrable Systems and Related Topics, published in SIGMA (Symmetry, Integrability and Geometry: Methods and Applications) at http://www.emis.de/journals/SIGMA/
Sum Uncertainty Relations: Uncertainty Regions for Qubits and Qutrits
Creators: name: Vasudevrao, Seeta
name: Reena, I.
name: Sudha
name: Devi, A. R. Usha
name: Rajagopal, A. K.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We investigate the notion of uncertainty region using the variance based sum uncertainty relation for qubits and qutrits.We compare uncertainty region of the qubit (a 2-level system) with that of the qutrit (3-level system) by considering sum uncertainty relation for two non-commuting Pauli-like observables, acting on the two dimensional qubit Hilbert space. We identify that physically valid uncertainty region of a qubit is smaller than that of a qutrit. This implies that an enhanced precision can be achieved in the measurement of incompatible Pauli-like observables acting on the 2-dimensional subspace of a qutrit Hilbert space. We discuss the implication of the reduced uncertainties in the steady states of Lambda, V and Cascade types of 3-level atomic systems. Furthermore, we construct a two-qubit permutation symmetric state, corresponding to a 3-level system and show that the reduction in the sum uncertainty value -- or equivalently, increased uncertainty region of a qutrit system { is a consequence of quantum entanglement in the two-qubit system. Our results suggest that uncertainty region can be used as a dimensional witness.
description: 18 pages, 6 figures
${\cal O}(α_sv^2)$ corrections to hadronic decay of vector quarkonia
Creators: name: Sang, Wen-Long
name: Feng, Feng
name: Jia, Yu
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Within the nonrelativistic QCD (NRQCD) factorization framework, we compute the ${\mathcal O}(α_s v^2)$ corrections to the hadronic decay rate of vector quarkonia, exemplified by $J/ψ$ and $Υ$. Setting both the renormalization and NRQCD factorization scales to be $m_Q$, we obtain $Γ(J/ψ\to {\rm LH})= 0.0716\frac{α_s^3}{m_c^2} \langle \mathcal{O}_1({}^3S_1)\rangle_{J/ψ} [1-1.19α_s+(-5.32+3.03α_s)\langle v^2\rangle_{J/ψ}]$ and $Γ(Υ\to {\rm LH})= 0.0716\frac{α_s^3}{m_b^2}\langle\mathcal{O}_1({}^3S_1)\rangle_Υ[1-1.56α_s+(-5.32+4.61α_s)\langle v^2\rangle_Υ]$. We confirm the previous calculation of $\mathcal{O}(α_s)$ corrections on a diagram-by-diagram basis, with the accuracy significantly improved. For $J/ψ$ hadronic decay, we find that the ${\mathcal O}(α_sv^2)$ corrections are moderate and positive, nevertheless unable to counterbalance the huge negative corrections. On the other hand, the effect of ${\mathcal O}(α_sv^2)$ corrections for $Υ(nS)$ is sensitive to the $\mathcal{O}(v^2)$ NRQCD matrix elements. With the appropriate choice of the NRQCD matrix elements, our theoretical predictions for the decay rates may be consistent with the experimental data for $Υ(1S,2S)\to {\rm LH}$. As a byproduct, we also present the theoretical predictions for the branching ratio of $J/ψ(Υ)\to 3γ$ accurate up to $\mathcal{O}(α_s v^2)$.
description: 21 pages, 5 figures, 3 tables
Solving The Lunar Lander Problem under Uncertainty using Reinforcement Learning
Creators: name: Gadgil, Soham
name: Xin, Yunfeng
name: Xu, Chengzhe
Publisher: name: arXiv
Year: 2020
Subjects: subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Reinforcement Learning (RL) is an area of machine learning concerned with enabling an agent to navigate an environment with uncertainty in order to maximize some notion of cumulative long-term reward. In this paper, we implement and analyze two different RL techniques, Sarsa and Deep QLearning, on OpenAI Gym's LunarLander-v2 environment. We then introduce additional uncertainty to the original problem to test the robustness of the mentioned techniques. With our best models, we are able to achieve average rewards of 170+ with the Sarsa agent and 200+ with the Deep Q-Learning agent on the original problem. We also show that these techniques are able to overcome the additional uncertainities and achieve positive average rewards of 100+ with both agents. We then perform a comparative analysis of the two techniques to conclude which agent peforms better.
Loschmidt echo in a system of interacting electrons
Creators: name: Manfredi, G.
name: Hervieux, P. -A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the Loschmidt echo for a system of electrons interacting through mean-field Coulomb forces. The electron gas is modeled by a self-consistent set of hydrodynamic equations. It is observed that the quantum fidelity drops abruptly after a time that is proportional to the logarithm of the perturbation amplitude. The fidelity drop is related to the breakdown of the symmetry properties of the wave function.
description: 4 pages, 6 figures, to appear in PRL
Clinical and Genomic Risk for Late Breast Cancer Recurrence and Survival.
Creators: name: Hoag, Jess
name: Gray, Robert J
name: Badve, Sunil S
name: Olson, John A
name: Goetz, Matthew P
name: Dees, Elizabeth C
name: Hayes, Daniel F
name: Wolmark, Norman
name: Kaklamani, Virginia G
name: Albain, Kathy S
name: Geyer, Charles E
name: Makower, Della F
name: Whelan, Timothy J
name: Shak, Steven
name: Baehner, Frederick L
name: Tang, Gong
name: Crager, Michael
name: Stemmer, Salomon M
name: Sledge, George W
name: Sparano, Joseph A
name: Saphner, Thomas J
name: Lively, Tracy
Publisher: name: Massachusetts Medical Society
Year: 2024

description: BACKGROUND: The 21-gene recurrence score (RS) assay (Oncotype DX) is used to guide adjuvant chemotherapy use for patients with hormone receptor-positive, HER2 (human epidermal growth factor receptor 2)-negative, axillary node-negative breast cancer. Its role, however, in providing prognostic information for late distant recurrence when added to clinicopathologic prognostic factors is unknown.
METHODS: A patient-specific meta-analysis including 10,004 women enrolled in three trials was updated using extended follow-up data from TAILORx, integrating the RS with histologic grade, tumor size, and age at surgery for the RSClin tool. Cox models integrating clinicopathologic factors and the RS were compared by using likelihood ratio (LR) tests. External validation of prognosis for distant recurrence in years 0 to 10 and 5 to 10 was performed in an independent cohort of 1098 women in a real-world registry.
RESULTS: RSClin provided significantly more prognostic information than either the clinicopathologic factors (ΔLR chi-square, 86.2; P<0.001) or RS alone (ΔLR chi-square, 131.0; P<0.001). The model was prognostic in an independent cohort for distant recurrence by 10 years after diagnosis (standardized hazard ratio, 1.56; 95% confidence interval, 1.25 to 1.94), was associated with late distant recurrence risk between 5 and 10 years after diagnosis (standardized hazard ratio, 1.78; 95% confidence interval, 1.25 to 2.55), and approximated the observed 10-year distant recurrence risk (Lin concordance, 0.87) and 5- to 10-year distant recurrence risk (Lin concordance, 0.92).
CONCLUSIONS: The 21-gene RS is prognostic for distant recurrence and overall survival in early breast cancer. A model integrating the 21-gene RS and clinicopathologic factors improved estimates of distant recurrence risk compared with either used individually and stratified late distant recurrence risk. (Funded by the National Cancer Institute, National Institutes of Health [U10CA180820, U10CA180794, UG1CA189859, U10CA180868, and U10CA180822] and others.).
Water properties, currents and zooplankton distribution over a submarine canyon under upwelling-favorable conditions
Creators: name: Vindeirinho, Carine
Publisher: name: University of British Columbia
Year: 2009

description: Two canyons (Juan de Fuca and Barkley) off the west coast of Vancouver Island show enhanced upwelling during the summer. Barkley Canyon is also a region of zooplankton aggregation. An intensive survey was conducted to characterize their circulation, water properties and, for Barkley, zooplankton distribution. CTD casts and zooplankton tows were performed in 1997 around Barkley Canyon. Current meter moorings were positioned within both canyons (Juan de Fuca in 1993 and Barkley in 1997). The circulation in Juan de Fuca Canyon is characterized by a southeastward flow at 30 and 75 m but a northward, in-canyon flow at 200 m. The deep flow supports a strong and consistent upwelling from May to October with a strong decrease in temperature equivalent to a 200-m vertical displacement. The northward-flowing California Undercurrent is found to have no significant influence on the upwelling. In Barkley Canyon, there is a weaker upwelling signal that nonetheless explains an important variance in the CTD data. Isopleths upwell towards the head of the canyon and dome over it near the surface. This implies that the influence of the canyon reaches shallower depths than in Astoria Canyon, for example. The circulation of the canyon is assessed from the mooring data: the flow bends over the canyon at 150 m, with a possible cyclonic eddy at the head, while the current is mainly cyclonic at depth. Some in-canyon flow events are observed, which result in moderate upwelling. Zooplankton are found to aggregate along the walls near the head and mouth of Barkley Canyon with different distribution patterns according to the species' vertical and spatial preferences. Interaction with the circulation, especially the deep cyclonic flow, seems to play an important role in this aggregation.
Minutes from meeting of the Trustees of the Winfield and Okanagan Centre Irrigation District, April 30, 1941
Creators: name: Trustees Of The Winfield And Okanagan Centre Irrigation District
Publisher: name: The University of British Columbia
Year: 2017

description: Minutes from meeting of the Trustees of the Winfield and Okanagan Centre Irrigation District, dated April 30, 1941, regarding the proposed dam, the level of the Storage Lakes and a request for domestic water.
Comparative study of the radius of sensitivity of the optical model potentials for $^6$Li+$^{58,64}$Ni and $^{16}$O+$^{58,64}$Ni
Creators: name: Biswas, Mili
Publisher: name: arXiv
Year: 2008
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Radii of sensitivity were estimated for the $^{6}$Li+$^{58,64}$Ni system at energies near the Coulomb barrier. For comparison purposes, such radii were also estimated for stable $^{16}$O scattered from same target isotopes. The elastic scattering data were analysed with folded real potential generated from DDM3Y nucleon-nucleon interaction and an imaginary potential of volume Woods-Saxon form. The most sensitive radii for $^{16}$O+$^{58,64}$Ni system are found to be energy independent and close to the strong absorption radius. For $^{6}$Li projectile, unlike its strongly bound counterpart, the crossing radius increases with decreasing energy. However, no two crossing situation has been observed for both $^{6}$Li+$^{58,64}$Ni and $^{16}$O+$^{58,64}$Ni systems at the top of the barrier.
description: Accepted for publication as a Brief Report in Physical Review C (4 pages, 5 figures)
Additional file 4 of Self-administered electroencephalography-based sleep assessment: compliance and perceived feasibility in children and adults
Creators: name: Pedersen, Jesper
name: Rasmussen, Martin Gillies Banke
name: Olesen, Line Grønholt
name: Kristensen, Peter Lund
name: Grøntved, Anders
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Neuroscience
subject: Physiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: Geology
subject: FOS: Earth and related environmental sciences
subject: 59999 Environmental Sciences not elsewhere classified
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Additional file 4. Change in total sleep time. This figure shows individual and intervention group changes in total sleep time from baseline to follow-up in children and adults.
Trigonometric $\vee$-systems and solutions of WDVV equations
Creators: name: Alkadhem, Maali
name: Feigin, Misha
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mathematical Physics (math-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider a class of trigonometric solutions of WDVV equations determined by collections of vectors with multiplicities. We show that such solutions can be restricted to special subspaces to produce new solutions of the same type. We find new solutions given by restrictions of root systems, as well as examples which are not of this form. Further, we consider a closely related notion of a trigonometric $\vee$-system and we show that their subsystems are also trigonometric $\vee$-systems. Finally, while reviewing the root system case we determine a version of (generalised) Coxeter number for the exterior square of the reflection representation of a Weyl group.
description: 32 pages
Additional file 5 of Self-administered electroencephalography-based sleep assessment: compliance and perceived feasibility in children and adults
Creators: name: Pedersen, Jesper
name: Rasmussen, Martin Gillies Banke
name: Olesen, Line Grønholt
name: Kristensen, Peter Lund
name: Grøntved, Anders
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Neuroscience
subject: Physiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: Geology
subject: FOS: Earth and related environmental sciences
subject: 59999 Environmental Sciences not elsewhere classified
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Additional file 5. Sleep stages derived from the Zmachine. This figure shows sleep stages scored by the Zmachine in a child from our sample. Zmachine scores sleep stages using 30 s epochs.
Στρατηγικός σχεδιασμός της Glaxo Smithkline Beecham
Creators: name: Καλκίνης, Δημήτριος Κωνσταντίνου
Publisher: name: Aristotle University of Thessaloniki
Year: 2008
Subjects: Στρατηγικός σχεδιασμός
Pest analysis
Portfolio management
Porter δυνάμεις

description: H παρούσα διπλωματική εργασία έχει ως στόχο τον στρατηγικό σχεδιασμό ( strategic plan ) μιας εκ των μεγαλυτέρων φαρμακευτικών εταιρειών-βιομηχανιών στο χώρο της GlaxoSmithKline (GSK). 2. ΔΕΔΟΜΕΝΑ Τα δεδομένα και τα στοιχειά που χρησιμοποιήθηκαν για την παρούσα διπλωματική εργασία είναι υποθετικά και ο στρατηγικός σχεδιασμός γίνεται εκ του μηδενός 3. ΜΕΘΟΔΟΙ ΕΠΙΣΤΗΜΟΝΙΚΗΣ ΑΝΑΛΥΣΗΣ · PEST ANALYSIS · Υπόδειγμα Των Πέντε Δυνάμεων Του PORTER · Δομική ανάλυση του κλάδου · SWOT ANALYSIS · Portfolio Managment 4. ΑΠΟΤΕΛΕΣΜΑΤΑ Στο κεφάλαιο 10 αναφέρονται τα αποτελέσματα του στρατηγικού σχεδιασμού και τα συμπεράσματα του ελέγχου της πρότασης με το Ms Project 5. ΓΕΝΙΚΑ ΣΥΜΠΕΡΑΣΜΑΤΑ · Αξίζει να σημειωθεί ότι, η πρώτη φάση (στρατηγικός σχεδιασμός) είναι η σημαντικότερη, επειδή επηρεάζει σημαντικά την πορεία και την κατάληξη των υπόλοιπων ωστόσο η δεύτερη φάση (Portfolio Managment) είναι η πιο ενδιαφέρουσα.
description: The current diplomatic research for the master of construction management is about the strategic plan of on of the biggest companies in pharmaceutics, GlaxoSmithKline (GSK). 2. Data The data used for this diplomatic research were from zero and the strategic plan is hypotheticalα. 3. METHODS OF SIENTIFIC RESEARSCH • PEST ANALYSIS • PORTER STRENGHTH • SPECIALAZATION • SWOT ANALYSIS • Portfolio Managment 4. RESULTS Chapter 10 refers to the results of strategic planning and portfolio management with Ms Project. 5. General RESULTS It is worth to mention that the first faze of strategic planning is the most important , because it affects the results and the direction of all the other fazes. Moreover the second faze (Portfolio Managment) is the most interesting.
Quantum magnetism in the paratacamite family: towards an ideal kagome lattice
Creators: name: Mendels, P.
name: Bert, F.
name: de Vries, M. A.
name: Olariu, A.
name: Harrison, A.
name: Duc, F.
name: Trombe, J. C.
name: Lord, J.
name: Amato, A.
name: Baines, C.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We report MuSR measurements on the S=1/2 (Cu2+) paratacamite Zn_xCu_{4-x}(OH)_6Cl_2 family. Despite a Weiss temperature of -300 K, the x=1 compound is found to have no transition to a magnetic frozen state down to 50 mK as theoretically expected for the kagome Heisenberg antiferromagnet. We find that the limit between a dynamical and a frozen inhomogeneous ground state occurs around x=0.5. For x=1, we discuss the relevance to a singlet picture.
description: Minor changes in the text and fig. 3 and fig.4. Corresponding author: P. Mendels, mendels@lps.u-psud.fr
How question quality drives Web performance in community question answering sites
Creators: name: Sha, Alyssa Shuang
name: Shi, Yingnan
name: Haller, Armin
Publisher: name: arXiv
Year: 2020
Subjects: subject: Social and Information Networks (cs.SI)
subject: FOS: Computer and information sciences

description: Users are posting millions of questions on Community question answering sites each day. The quality of those questions significantly affects the satisfactions of the sites' users and, therefore, sites' traffic. We gathered 15 question-quality related features from one of the largest CQA sites and the site's pageview data to estimate the scale of the effect in the corresponding time series. By using a Grey Relational Analysis, we rank those question quality features and estimate the relative strength of these factors on a page's view numbers. Our results show that the features of question quality have a significant influence on web performance. We generate a ranked list of features and find that digital popularity and textual features can drive the page traffic more than questioner related features and question difficulty. The implications of the findings for Web growth and future research are discussed.
description: 12 pages, 1 figure, 4 tables
Localization at threshold in noncommutative space
Creators: name: Giri, Pulak Ranjan
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The ground state energy of a scale symmetric system usually does not possess any lower bound, thus making the system quantum mechanically unstable. Self-adjointness and renormalization techniques usually provide the system a scale and thus making the ground state bounded from below. We on the other hand use noncommutative quantum mechanics and exploit the noncommutative parameter Θas a scale for a scale symmetric system. The resulting Hamiltonian for the system then allows an unusual bound state at the threshold of the energy, E=0. Apart from the Hamiltonian \hat{H} we also compute the other two generators of the so(2,1) algebra, the dilation \hat{D} and the conformal generator \hat{K} in the noncommutative space. The so(2,1) algebra is not closed in the noncommutative space, but the limit Θ\to 0 smoothly goes to the so(2,1) algebra restoring the conformal symmetry. We also discuss the system for large noncommutative parameter.
description: 4 pages, no figure, Refs. added
Geometric phases for mixed states and decoherence
Creators: name: Fujikawa, Kazuo
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The gauge invariance of geometric phases for mixed states is analyzed by using the hidden local gauge symmetry which arises from the arbitrariness of the choice of the basis set defining the coordinates in the functional space. This approach gives a reformulation of the past results of adiabatic, non-adiabatic and mixed state geometric phases. The geometric phases are identified uniquely as the holonomy associated with the hidden local gauge symmetry which is an exact symmetry of the Schrödinger equation. The purification and its inverse in the description of de-coherent mixed states are consistent with the hidden local gauge symmetry. A salient feature of the present formulation is that the total phase and visibility in the mixed state, which are directly observable in the interference experiment, are manifestly gauge invariant.
description: 23 pages. To be published in Annals of Physics