cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
TRADING COLLAR, INTRADAY, PERIODICITY, AND STOCK MARKET VOLATILITY
Creators: name: Aradhyula, Satheesh V.
name: Ergun, A. Tolga
name: Aradhyula, Satheesh V.
name: Ergun, A. Tolga
Publisher: name: Unknown
Year: 2002
Subjects: subject: Marketing
subject: FOS: Economics and business

description: Using 5 minute data, we examine market volatility in the Dow Jones Industrial Average in the presence of trading collars. We use a polynomial specification for capturing intraday seasonality. Results indicate that market volatility is 3.4 percent higher in declining markets when trading collars are in effect. Results also support a U-shaped intraday periodicity in volatility.
MANAGING THE CORN ROOTWORM VARIANT: EMPIRICAL RESULTS FROM AN INDIANA FARMER SURVEY
Creators: name: Harbor, Anetra L.
name: Martin, Marshall A.
name: Harbor, Anetra L.
name: Martin, Marshall A.
Publisher: name: Unknown
Year: 2002
Subjects: subject: Crop Production/Industries
subject: areawide pest management
subject: corn rootworms
subject: technology adoption
subject: transgenic corn

description: The emergence of a corn rootworm "variant" has reduced the effectiveness of a corn-soybean rotation in some areas of Indiana. This research identifies potential control alternatives. Empirical results suggest that younger, more educated managers of larger farms would be the most likely to adopt transgenic corn for rootworm control.
Yield improvement of exopolysaccharides by screening of the Lactobacillus acidophilus ATCC and optimization of the fermentation and extraction conditions
Creators: name: Liu, Qi
name: Huang, Xingjian
name: Yang, Dengxiang
name: Si, Tianlei
name: Pan, Siyi
name: Yang, Fang
Publisher: name: Technische Universität Dortmund
Year: 2016
Subjects: subject: Plackett-Burman design
subject: central composite design
subject: EPS
subject: fermentation optimization
subject: extraction optimization
subject: 610

description: Exopolysacharides (EPS) produced by Lactobacillus acidophilus play an important role in food processing with its well-recognized antioxidant activity. In this study, a L. acidophilus mutant strain with high-yielding EPS (2.92±0.05 g/L) was screened by chemical mutation (0.2 % diethyl sulfate). Plackett-Burman (PB) design and response surface methodology (RSM) were applied to optimize the EPS fermentation parameters and central composite design (CCD) was used to optimize the EPS extraction parameters. A strain with high-yielding EPS was screened. It was revealed that three parameters (Tween 80, dipotassium hydrogen phosphate and trisodium citrate) had significant influence (P < 0.05) on the EPS yield. The optimal culture conditions for EPS production were: Tween 80 0.6 mL, dipotassium hydrogen phosphate 3.6 g and trisodium citrate 4.1 g (with culture volume of 1 L). In these conditions, the maximum EPS yield was 3.96±0.08 g/L. The optimal extraction conditions analyzed by CCD were: alcohol concentration 70 %, the ratio of material to liquid (M/L ratio) 1:3.6 and the extraction time 31 h. In these conditions, the maximum EPS extraction yield was 1.48±0.23 g/L. It was confirmed by the verification experiments that the EPS yield from L. acidophilus mutant strains reached 5.12±0.73 g/L under the optimized fermentation and extraction conditions, which was 3.8 times higher than that of the control (1.05±0.06 g/L). The results indicated that the strain screening with high-yielding EPS was successful and the optimized fermentation and extraction conditions significantly enhanced EPS yield. It was efficient and industrially promising.
description: EXCLI Journal;Vol. 15, 2016
FARM LEVEL IRRIGATION TECHNOLOGY DECISIONS OVER TIME
Creators: name: Schuck, Eric C.
name: Green, Gareth P.
name: Schuck, Eric C.
name: Green, Gareth P.
Publisher: name: Unknown
Year: 2002
Subjects: Farm Management

description: A time-series cross-sectional model of irrigation technology choice is developed for an irrigation district in California's Central Valley to show how changes in the relative price of irrigation water and variations in water supply over time influence the choice of irrigation system. Results indicate changes in crop mix and variations in water supply are at least as important as price in determining the choice of irrigation system.
Plane waves in metric-affine gravity
Creators: name: Obukhov, Yuri N.
Publisher: name: arXiv
Year: 2006
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We describe plane-fronted waves in the Yang-Mills type quadratic metric-affine theory of gravity. The torsion and the nonmetricity are both nontrivial, and they do not belong to the triplet ansatz.
description: 18 pages, revtex, no figures
Realism in the Realized Popper's Experiment
Creators: name: Hunter, Geoffrey
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The realization of Karl Popper's EPR-like experiment by Shih and Kim (published 1999) produced the result that Popper hoped for: no ``action at a distance'' on one photon of an entangled pair when a measurement is made on the other photon. This experimental result is interpretable in local realistic terms: each photon has a definite position and transverse momentum most of the time; the position measurement on one photon (localization within a slit) disturbs the transverse momentum of that photon in a non-predictable way in accordance with the uncertainty principle; however, there is no effect on the other photon (the photon that is not in a slit) no action at a distance. The position measurement (localization within a slit) of the one photon destroys the entanglement between the photons; i.e. decoherence occurs.
description: 6 pages as published in the AIP Proceedings
Nonlocality for Generic Networks
Creators: name: Renou, Marc-Olivier
name: Beigi, Salman
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences
subject: 81P40, 81P45, 05C90, 05C15, 05C21, 05C57

description: Bell's theorem shows that correlations created by a single entangled quantum state cannot be reproduced classically. Such correlations are called Nonlocal. They are the elementary manifestation of a broader phenomenon called Network Nonlocality, where several entangled states shared in a network create Network Nonlocal correlations. In this paper, we provide the first class of strategies producing nonlocal correlations in generic networks. In these strategies, called Color-Matching (CM), any source takes a color at random or in superposition, where the colors are labels for a basis of the associated Hilbert space. A party (besides other things) checks if the color of neighboring sources match. We show that in a large class of networks without input, well-chosen quantum CM strategies result in nonlocal correlations that cannot be produced classically. For our construction, we introduce the graph theoretical concept of rigidity of classical strategies in networks, and using the Finner inequality, establish a deep connection between network nonlocality and graph theory. In particular, we establish a link between CM strategies and the graph coloring problem. This work is extended in a longer paper, Network Nonlocality via Rigidity of Token-Counting and Color-Matching, where we introduce a second family of rigid strategies called Token-Counting, leading to network nonlocality.
description: 6 pages. Comments are welcome! The first version of this work was split of for publication, see the extended work arXiv:2202.00905 (Phys. Rev. A 105, 022408, DOI: 10.1103/PhysRevA.105.022408)
Development of sarcosine quantification in urine based on enzyme-coupled colorimetric method for prostate cancer diagnosis
Creators: name: Yamkamon, Vichanan
name: Phakdee, Benjarong
name: Yainoy, Sakda
name: Suksrichawalit, Thummaruk
name: Tatanandana, Tararat
name: Sangkum, Premsant
name: Eiamphungporn, Warawan
Publisher: name: Technische Universität Dortmund
Year: 2018
Subjects: subject: Colorimetric assay
subject: Sarcosine
subject: Prostate cancer
subject: Sarcosine oxidase
subject: Urine
subject: 610

description: An enzyme-coupled colorimetric assay for quantification of urinary sarcosine was developed. The proposed method is a specific reaction based on hydrogen peroxide (H2O2) formation via sarcosine oxidase (SOX). The liberated H2O2 reacts with Amplex Red in the presence of horseradish peroxidase (HRP) to produce the redfluorescent oxidation product, resorufin, which can be measured spectrophotometrically (OD570). The method was performed in the 96-well microtiter plate. Reaction conditions, such as pH and reaction time were optimized. At the optimum conditions, the limit of detection (LOD) and quantification (LOQ) were found to be 0.7 and 1 μM, respectively. A good linearity was revealed with a coefficient of 0.990. The assay showed no significant interference from ascorbic acid, glucose and bilirubin. In addition, it is extremely specific for sarcosine rather than other amino acids. The determination of sarcosine in human urine displayed high accuracy and good reproducibility. This method is promising to differentiate prostate cancer patients from healthy subjects according to urinary sarcosine level. Altogether, this study provides a rapid, simple and specific tool to determine urinary sarcosine which could be useful for prostate cancer diagnosis.
description: EXCLI Journal;Vol. 17 2018
title: e-Learning στην τριτοβάθμια εκπαίδευση
title: e-Learning in higher education
titleType: AlternativeTitle
Creators: name: Darra, Christina
name: Δάρρα, Χριστίνα
Publisher: name: Πανεπιστήμιο Πειραιώς
Year: 2020
Subjects: subject: Εξ αποστάσεως εκπαίδευση
subject: Συστήματα διαχείρισης μάθησης
subject: Τεχνολογίες Πληροφοριών και Επικοινωνίας (ΤΠΕ)
subject: e-Learning
subject: Τριτοβάθμια εκπαίδευση

description: Η παρούσα εργασία ασχολείται με την e-learning ή εξ αποστάσεως εκπαίδευση. Η εργασία χωρίζεται σε θεωρητικό και ερευνητικό μέρος. Το πρώτο μέρος περιλαμβάνει το θεωρητικό πλαίσιο όπου γίνεται αναφορά στην έννοια και τα συστατικά της ηλεκτρονικής μάθησης και ολοκληρώνεται με αναφορά στη χρήση της ηλεκτρονικής μάθησης στην εκπαίδευση. Στο δεύτερο μέρος περιλαμβάνεται το ερευνητικό σκέλος της διπλωματικής εργασίας που πραγματοποιήθηκε με πρωτογενή έρευνα η οποία διενεργήθηκε με σκοπό τη διερεύνηση του e-learning στην εκπαίδευση με έμφαση στην τριτοβάθμια εκπαίδευση. Η ερευνητική μέθοδος που αποφασίστηκε να ακολουθηθεί είναι η ποσοτική με τη χρήση ερωτηματολογίου. Το ερωτηματολόγιο της έρευνας που σχεδιάστηκε από την ερευνήτρια, στο πλαίσιο της εργασίας, χωρίστηκε σε τρία μέρη με ερωτήσεις που σχετίζονταν με την e-learning εκπαίδευση, τη χρησιμοποιούμενη τεχνολογία στην e-learning εκπαίδευση και τη διοικητική υποστήριξη των φοιτητών στην e-learning εκπαίδευση. Η έρευνα χωρίστηκε σε δυο σκέλη και αφορά την απομακρυσμένη εκπαιδευτική διαδικασία και το χειρισμό αυτής από τους φοιτητές πριν και μετά το ξέσπασμα της πανδημίας του κορωνοϊού με την διεθνή ονομασία Covid – 19. Καλύπτει δυο χρονικές περιόδους οι οποίες, κατά την άποψη της ερευνήτριας, έπαιξαν ρόλο στην αντίληψη των ερωτηθέντων και ολοκληρώθηκε αμέσως μετά την έξαρση της πανδημίας. Τα συμπεράσματα που προκύπτουν είναι ιδιαίτερα ενθαρρυντικά για το σύνολο της έρευνας.
Measurement of Time-Dependent CP Asymmetries in B0 -> D(*)D Decays
Creators: name: The BABAR Collaboration
name: Aubert, B.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We present a first measurement of CP asymmetries in neutral B decays to D+D-, and updated CP asymmetry measurements in decays to D*+D- and D*-D+. We use fully-reconstructed decays collected in a data sample of (232 +- 3) x 10^6 Y(4S) -> BBbar events in the BABAR detector at the PEP-II asymmetric-energy B Factory at SLAC. We determine the time-dependent asymmetry parameters to be S_{D*+D-} = -0.54 +- 0.35 +- 0.07, C_{D*+D-} = 0.09 +- 0.25 +- 0.06, S_{D*-D+} = -0.29 +- 0.33 +- 0.07, C_{D*-D+} = 0.17 +- 0.24 +- 0.04, S_{D+D-} = -0.29 +- 0.63 +- 0.06, and C_{D+D-} = 0.11 +- 0.35 +- 0.06, where in each case the first error is statistical and the second error is systematic.
description: 7 pages, 6 postscript figues, submitted to Phys. Rev. Lett
61 ways to measure the height of a building: an introduction to experimental practices
Creators: name: Bouquet, Frederic
name: Organtini, Giovanni
name: Kolli, Amel
name: Bobroff, Julien
Publisher: name: arXiv
Year: 2020
Subjects: subject: Physics Education (physics.ed-ph)
subject: FOS: Physical sciences

description: We created an introductory physics activity for undergrad students consisting in measuring by different methods the same physical quantity. It allows to confront students with questions of uncertainty, precision, and model versus theory. The aim was to measure the height of a building using only a smartphone and everyday low-cost equipment. We designed 61 methods to do so and tested most of them. These methods can be implemented in various pedagogical scenarios, engaging students into a concrete task, outside of the lab, easily set up at almost zero cost.
description: For associated info, see http://hebergement.universite-paris-saclay.fr/supraconductivite/smartphone-physics-challenge/?lang=en
USING THE SPATIAL STATISTICS APPROACH TO ANALYZE YIELD RISK POOLING IN THE US
Creators: name: Wang, H. Holly
name: Zhang, Hao
name: Wang, H. Holly
name: Zhang, Hao
Publisher: name: Unknown
Year: 2002
Subjects: Risk and Uncertainty

description: Risk theory tells us if an insurer can effectively pool a large number of individuals to reduce the total risk, he then can provide the insurance by charging a premium close to the actuarially fair rate. There is, however, a common belief that the risk can be effectively pooled only when the random loss is independent, so that crop insurance markets cannot survive without government subsidy because crop yields are not independent among growers. In this paper, we take a a spatial statistics approach to examine the effectiveness of risk pooling for crop insurance under correlation. We develop a method for evaluating the effectiveness of risk pooling under correlation and apply the method to three major crops in the US: wheat, soybeans and corn. The empirical study shows that yields for the three crops present zero or negative correlation when two counties are far apart, which complies with a weaker condition than independence, finite-range positive dependency. The results show that effective risk pooling is possible and reveal a high possibility of a private crop insurance market in the US.
HR-MAS NMR based quantitative metabolomics in breast cancer
Creators: name: Gogiashvili, Mikheil
name: Nowacki, Jessica
name: Hergenröder, Roland
name: Hengstler, Jan G.
name: Lambert, Jörg
name: Edlund, Karolina
Publisher: name: Technische Universität Dortmund
Year: 2019
Subjects: subject: NMR
subject: HR MAS
subject: Breast cancer
subject: Metabolomics
subject: 660
subject: MAS-NMR-Spektroskopie
subject: Brustkrebs
subject: Metabolom

description: High resolution magic-angle spinning (HR-MAS) nuclear magnetic resonance (NMR) spectroscopy is increasingly used for profiling of breast cancer tissue, delivering quantitative information for approximately 40 metabolites. One unique advantage of the method is that it can be used to analyse intact tissue, thereby requiring only minimal sample preparation. Importantly, since the method is non-destructive, it allows further investigations of the same specimen using for instance transcriptomics. Here, we discuss technical aspects critical for a successful analysis—including sample handling, measurement conditions, pulse sequences for one- and two dimensional analysis, and quantification methods—and summarize available studies, with a focus on significant associations of metabolite levels with clinically relevant parameters.
description: Metabolites;9(2)
ALL FOR EFFICIENCY AND EFFICIENCY FOR ALL -- DISPELLING MYTHS ABOUT "COSTLY" NEW QUALITY ATTRIBUTES IN FOOD PRODUCTS
Creators: name: Sterns, James A.
name: Sterns, Patricia Aust
name: Burkhardt, Jeffrey
name: Sterns, James A.
name: Sterns, Patricia Aust
name: Burkhardt, Jeffrey
Publisher: name: Unknown
Year: 2002
Subjects: subject: Marketing
subject: FOS: Economics and business

description: As new quality attributes for food products emerge, questions arise about the relative "efficiencies" of alternative market responses to these changes. This paper discusses two closely related issues: different perspectives about "efficiency" found in the literature, and the potential responses to the introduction of new food product attributes by individual firms. Comparing different understandings of "efficiency" and analyzing different firm-level market responses lead to conclusions about the use of "efficiency" for prescriptive decisions by firms and value-laden recommendations by economists.
Third order ODEs and four-dimensional split signature Einstein metrics
Creators: name: Godlinski, Michal
name: Nurowski, Pawel
Publisher: name: arXiv
Year: 2005
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 34A26, 53B15, 53B30, 53B50

description: We construct a family of split signature Einstein metrics in four dimensions, corresponding to particular classes of third order ODEs considered modulo fiber preserving transformations of variables.
Barkhausen noise assessment of the surface conditions due to deep hole drilling and their influence on the fatigue behaviour of AISI 4140
Creators: name: Baak, Nikolas
name: Schaldach, Fabian
name: Nickel, Jan
name: Biermann, Dirk
name: Walther, Frank
Publisher: name: Technische Universität Dortmund
Year: 2018
Subjects: subject: structural health monitoring
subject: fatigue behaviour
subject: quenched and tempered steel
subject: AISI 4140
subject: 42CrMo4 + QT
subject: surface condition
subject: magnetic Barkhausen noise
subject: 660
subject: Materialermüdung
subject: Gehärteter Stahl
subject: Vergütungsstahl
subject: Barkhausenrauschen

description: In many technical fields, high-strength steels like AISI 4140 are commonly used for highly dynamically loaded parts. Increasing demands on weight, performance and efficiency of the automotive industry lead to increasing demands on material properties. For surface conditioning, optimised machining processes are capable of improving the fatigue performance without increasing the production cost significantly. This paper compares the influence of three different sulphur contents and three different feed rates on the fatigue behaviour of deep hole drilled AISI 4140 fatigue specimens. The specimens were characterised regarding their surface condition, hardness and microstructure, and afterwards they were tested under fatigue loading for performance assessment. These tests were accompanied with Barkhausen noise analysis. The Barkhausen noise signal was detected by a custom-built sensor that is capable of detecting the magnetic values on the bore wall. Using this technique, a load-independent estimation of fatigue damage was established.
Αξιολόγηση επένδυσης δημιουργίας δικτύου και παροχής υπηρεσιών ευρυζωνικότητας
Creators: name: Αγγελάκης, Δημήτριος
Publisher: name: Πανεπιστήμιο Πειραιώς
Year: 2020
Subjects: subject: Δίκτυα Πρόσβασης Νέας Γενιάς
subject: Οπτική Ίνα στο Σπίτι
subject: Οπτική Ίνα στη Καμπίνα
subject: Οπτική ίνα
subject: Ευρυζωνικότητα
subject: Internet
subject: Καθαρή Παρούσα Αξία (ΚΤΑ)
subject: Passive Optical Network (PON)
subject: Καθαρές Ταμειακές Ροές (ΚΤΡ)
subject: Εσωτερικός δείκτης απόδοσης
subject: Next Generation Access (NGA)
subject: Fiber To The Home (FTTH)
subject: Fiber To The Cabinet (FTTC)

description: Από τις αρχές του 21ου αιώνα παρατηρείται μία ραγδαία ανάπτυξη της τεχνολογίας. Η τεχνολογία διαδραματίζει πρωταγωνιστικό ρόλο στην καθημερινότητα των περισσότερων ανθρώπων, τόσο σε επαγγελματικό όσο και σε προσωπικό και κοινωνικό επίπεδο. Σημαντικότατο ρόλο στην ανάπτυξη αυτή είναι η συνεχώς αυξανόμενη χρήση του διαδικτύου (Internet). Οι περισσότεροι άνθρωποι, ανεξαρτήτου ηλικίας, χρησιμοποιούν το Internet σε πολύ μεγάλο βαθμό και με πλειάδα τρόπων ώστε να το θεωρούν δεδομένο. Οι ανάγκες των ανθρώπων σε καθημερινή βάση είναι πλέον τέτοιες που χρειάζονται ολοένα και μεγαλύτερο όγκο δεδομένων (data) προς κατανάλωση αλλά και υψηλότερες ταχύτητες Internet, ώστε να μπορούν να εργάζονται, να κοινωνικοποιούνται, να ψυχαγωγούνται καλύτερα αλλά και αισθητά ταχύτερα. Σκοπός της παρούσας εργασίας είναι να παρουσιάσει και να εξηγήσει τις ακόλουθες έννοιες: Δίκτυα Πρόσβασης Νέας Γενιάς (Next Generation Access - NGA), Οπτική Ίνα στο Σπίτι (Fiber To The Home - FTTH) και Οπτική Ίνα στη Καμπίνα (Fiber To The Cabinet – FTTC). Τα δίκτυα αυτά είναι ικανά να παρέχουν υπερυψηλές ταχύτητες στον τελικό χρήστη. Δεδομένου ότι η τεχνολογία είναι πολυδάπανη και ο ανταγωνισμός μεταξύ των εταιριών-παρόχων είναι μεγάλος, η δημιουργία των παραπάνω δικτύων και η παροχή τέτοιων υπηρεσιών συνοδεύεται από υψηλά κόστη για τους παρόχους. Στην παρούσα εργασία μελετάται επίσης το κόστος επένδυσης για τη δημιουργία δικτύων FTTC και FTTH και θα αξιολογηθεί η επένδυση αυτή. Tα εξαγόμενα συμπεράσματα προέκυψαν από δείκτες και εφαρμογές αξιολόγησης επενδύσεων όπως ΚΤΡ, ΚΠΑ, Δείκτης απόδοσης και IRR. Τα αποτελέσματα μελετήθηκαν και αξιολογήθηκαν σύμφωνα με τις αρχές της Χρηματοοικονομικής. Συμπερασματικά, φαίνεται ότι μια τέτοια επένδυση είναι μελλοντικά επικερδής για την εταιρία-πάροχο.
Electromagnetic Form Factors of the Nucleon and Compton Scattering
Creators: name: Hyde-Wright, Charles Earl
name: de Jager, Kees
Publisher: name: arXiv
Year: 2005
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We review the experimental and theoretical status of elastic electron scattering and elastic low-energy photon scattering (with both real and virtual photons) from the nucleon. As a consequence of new experimental facilities and new theoretical insights, these subjects are advancing with unprecedented precision. These reactions provide many important insights into the spatial distributions and correlations of quarks in the nucleon.
description: 47 pages, 18 figures, includes corrections and updates to published manuscript
Perturbed distribution functions with accurate action estimates for the Galactic disc
Creators: name: Kazwini, H. Al
name: Agobert, Q.
name: Siebert, A.
name: Famaey, B.
name: Monari, G.
name: Rozier, S.
name: Ramos, P.
name: Ibata, R.
name: Gausland, S.
name: Riviere, C.
name: Spolyar, D.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: In the Gaia era, understanding the effects of the perturbations of the Galactic disc is of major importance in the context of dynamical modelling. In this theoretical paper we extend previous work in which, making use of the epicyclic approximation, the linearized Boltzmann equation had been used to explicitly compute, away from resonances, the perturbed distribution function of a Galactic thin-disc population in the presence of a non-axisymmetric perturbation of constant amplitude. Here we improve this theoretical framework in two distinct ways in the new code that we present. First, we use better estimates for the action-angle variables away from quasi-circular orbits, computed from the AGAMA software, and we present an efficient routine to numerically re-express any perturbing potential in these coordinates with a typical accuracy at the per cent level. The use of more accurate action estimates allows us to identify resonances such as the outer 1:1 bar resonance at higher azimuthal velocities than the outer Lindblad resonance (OLR), and to extend our previous theoretical results well above the Galactic plane, where we explicitly show how they differ from the epicyclic approximation. In particular, the displacement of resonances in velocity space as a function of height can in principle constrain the 3D structure of the Galactic potential. Second, we allow the perturbation to be time dependent, thereby allowing us to model the effect of transient spiral arms or a growing bar. The theoretical framework and tools presented here will be useful for a thorough analytical dynamical modelling of the complex velocity distribution of disc stars as measured by past and upcoming Gaia data releases.
description: 16 pages, 15 figures, conclusions qualitatively unchanged, accepted for publication in Astronomy and Astrophysics
HOW DIFFERENTLY AGRICULTURAL AND INDUSTRIAL SECTORS RESPOND TO EXCHANGE RATE FLUCTUATION?
Creators: name: Kim, MinKyoung
name: Koo, Won W.
name: Kim, MinKyoung
name: Koo, Won W.
Publisher: name: Unknown
Year: 2002
Subjects: Agricultural Finance

description: This study divides the U.S. economy into the agricultural and industrial sectors and compares the degree of the involvement of exchange rates in each sector without specifying the rigid assumption of either exogeneity or endogeneity of exchange rates. Both short- and long-run impacts of shocks in the exchange rate are found to be significant. However, the effect of an exchange rate shock on the agricultural sector is larger than the industrial sector. This study fulfills a fundamental question about the role of exchange rate between the two sectors. The exchange rate is exogenous in the agricultural sector, while being endogenous in the industrial sector.
Investigating the effect of visfatin on ERalpha phosphorylation (Ser118 and Ser167) and ERE-dependent transcriptional activity
Creators: name: Zangooei, Mohammad
name: Nourbakhsh, Mitra
name: Ghahremani, Mohammad Hossein
name: Meshkani, Reza
name: Khedri, Azam
name: Shadboorestan, Amir
name: Shokri Afra, Hajar
name: Shahmohamadnejad, Shiva
name: Mirmiranpour, Hossein
name: Khaghani, Shahnaz
Publisher: name: Technische Universität Dortmund
Year: 2018
Subjects: subject: Breast cancer
subject: Estrogen receptor
subject: Serine 118 phosphorylation
subject: Serine 167 phosphorylation
subject: Visfatin
subject: 610

description: Obesity is associated with higher postmenopausal breast cancer incidence. Visfatin level alteration is one of the mechanisms by which obesity promotes cancer. Ligand-independent activation of estrogen receptor alpha (ERα) is also associated with carcinogenesis. The activity of ERα is modulated through phosphorylation on multiple sites by a number of protein kinases. Here we investigated the effect of visfatin as a novel adipocytokine on the phosphorylation and activity of ERα in MCF-7 breast cancer cells. We showed that exogenous administration of visfatin significantly increased the phosphorylation of ERα at serine 118 (Ser118) and 167 (Ser167) residues. Visfatininduced Ser118 phosphorylation was diminished after treatment of cells with U0126 (MEK1/2 inhibitor). Furthermore, our results showed that visfatin-induced Ser167 phosphorylation is mediated through both MAPK and PI3K/Akt signaling pathways. Inhibition of the enzymatic activity of visfatin by FK866 had no effect on phosphorylation of ERα. We also showed that visfatin enhanced the estrogen response element (ERE)-dependent activity of ER in the presence of 17-β estradiol (E2). Additional study on T47D cells showed that visfatin also increased Ser118 and Ser167 phosphorylation of ERα and enhanced ERE-dependent activity in the presence of E2 in these cells.
description: EXCLI Journal;Vol. 17 2018
Second order perturbation theory for spin-orbit resonances
Creators: name: Flynn, A. E.
name: Saha, P.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We implement Lie transform perturbation theory to second order for the planar spin-orbit problem. The perturbation parameter is the asphericity of the body, with the orbital eccentricity entering as an additional parameter. We study first and second order resonances for different values of these parameters. For nearly spherical bodies like Mercury and the Moon first order perturbation theory is adequate, whereas for highly aspherical bodies like Hyperion the spin is mostly chaotic and perturbation theory is of limited use. However, in between, we identify a parameter range where second order perturbation theory is useful and where as yet unidentified objects may be in second order resonances.
description: To appear in AJ
DEBT AND LEASING IN AGRICULTURE: A QUANTILE REGRESSION APPROACH
Creators: name: Taheripour, Farzad
name: Katchova, Ani L.
name: Barry, Peter J.
name: Taheripour, Farzad
name: Katchova, Ani L.
name: Barry, Peter J.
Publisher: name: Unknown
Year: 2002
Subjects: Agricultural Finance

description: While traditional finance theory suggests that leasing and debt are substitutes, some papers demonstrated the theoretical possibility of complementarity. Empirical studies indicate that both are possible. In this paper we will use the Tobit model, ordinary least squares and quantile regression techniques to study the relationship between leasing and debt in farm capital structure in Illinois. Our results indicate that leasing and debt are close to perfect substitutes and leased assets are less risky than debt-financed assets in Illinois farms. The results from the quantile regression help us to capture the effects of farm characteristics on the distribution of leased to assets ratio.
Συμβάσεις διαχείρισης ξενοδοχείων (Hotel management contracts)
Creators: name: Κοκολάκη, Αργυρώ
Publisher: name: Πανεπιστήμιο Πειραιώς
Year: 2021
Subjects: subject: Διαχείριση
subject: Ξενοδοχεία

description: Σε πρώτο στάδιο παρουσιάζεται μια γενική θεώρηση της σύμβασης διαχείρισης επιχειρήσεων προς τη διασάφηση των βασικών χαρακτηριστικών, του περιεχομένου και της νομική της φύσης, μιας και η σύμβαση διαχείριση της ξενοδοχειακής επιχείρησης αποτελεί ειδικότερη περίπτωσή της. Στη συνέχεια, ακολουθεί η ιστορική αναδρομή των συμβάσεων διαχείρισης των ξενοδοχειακών επιχειρήσεων, όπου και αναδεικνύεται η σύνδεσή τους με το τουριστικό φαινόμενο, οι λόγοι που συντέλεσαν στην εξέλιξή τους στο πέρασμα των χρόνων και η διαδικασία διαμόρφωσής τους μέχρι και σήμερα. Έπειτα, αφού πραγματοποιείται ο ειδικότερος ορισμός της σύμβασης διαχείρισης ξενοδοχειακής επιχείρησης και των αντισυμβαλλομένων μερών, ακολουθεί η διάκρισή της από συγγενείς συμβάσεις με έμφαση στην διάκρισή της από τη μίσθωση επιχείρησης και τις συμβάσεις τουριστικού δικαίου που συνάπτει ο ξενοδόχος, καθιστώντας περαιτέρω σαφή τα εννοιολογικά της στοιχεία. Η συγκριτική αντιπαράθεσή της με τους άλλους τρόπους διαχείρισης της ξενοδοχειακής επιχείρησης που ακολουθεί, αναδεικνύει περαιτέρω τα πλεονεκτήματά της και καταδεικνύει την παγκόσμια επικράτησή της. Ακολούθως, παρουσιάζεται μια προτεινόμενη διαδικασία διαπραγμάτευσής σε δύο στάδια και δύο γύρους διαπραγματεύσεων και η ανάλυση των βασικών όρων που ενσωματώνονται σε αυτή από τα μέρη οι οποίοι διαφοροποιούνται ανά περίπτωση, καθώς καθορίζονται στο πλαίσιο της συμβατικής ελευθερίας. Έπειτα, επιχειρείται ο έλεγχος της σύμβασης διαχείρισης με βάση την ελληνική νομοθεσία και ανάλογα με το συμβατικό τύπο της αναθέτουσας ξενοδοχειακής επιχείρησης. Τέλος, αναλύεται η συγκρουσιακή σχέση των μερών και παρουσιάζονται οι νέες τάσεις στις συμβάσεις διαχείρισης ξενοδοχείων που μεταβάλλουν περαιτέρω την ισορροπία των αντιτιθέμενων συμφερόντων ξενοδόχου και διαχειριστή.
Quantum dynamics, particle delocalization and instability of Mott states: the effect of fermion-boson conversion on Mott states
Creators: name: Zhou, Fei
name: Wu, Congjun
Publisher: name: arXiv
Year: 2005
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We study the quantum dynamics of superfluids of bosons hybridized with Cooper pairs near Feshbach resonances and the influence of fermion-boson conversion on Mott states. We derive a set of equations of motion which describe novel low energy dynamics in superfluids and obtain a new distinct branch of {\em gapped} collective modes in superfluids which involve anti-symmetric phase oscillations in fermionic and bosonic channels. We also find that Mott states in general are unstable with respect to fermion-boson conversion; particles become delocalized and the off-diagonal long-range order of superfluids can be developed when a finite conversion is present. We further point out a possible hidden order in Mott states. It is shown that the quantum dynamics of Fermi-Bose states can be characterized by either an effective coupled $U(1)\otimes U(1)$ quantum rotor Hamiltonian in a large-N limit or a coupled XXZ $\otimes$ XXZ spin Hamiltonian in a single-orbit limit.
description: 15 pages, 4 figures
Semiparametric Estimation and Inference in a System of Censored Demand Equations
Creators: name: Fahs, Rafic
name: Cardell, N. Scott
name: Mittelhammer, Ronald C.
name: Fahs, Rafic
name: Cardell, N. Scott
name: Mittelhammer, Ronald C.
Publisher: name: Unknown
Year: 2001
Subjects: Demand and Price Analysis

description: The purpose of this paper is to utilize the generalized method of moments (GMM) approach for estimating a system of multivariate Tobit equations and propose a practical consistent estimator of model parameters. The GMM approach is based on a common set of general marginal and bivariate moment relations that hold between explanatory variables and model noise.
Threshold Resummation for Drell-Yan Process in Soft-Collinear Effective Theory
Creators: name: Idilbi, Ahmad
name: Ji, Xiangdong
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We consider Drell-Yan process in the threshold region $z\to 1$ where large logarithms appear due to soft-gluon radiations. We present a soft-collinear effective theory approach to re-sum these Sudakov-type logarithms following an earlier treatment of deep inelastic scattering, and the result is consistent with that obtained earlier through perturbative QCD factorization
description: A version to appear in Phyr. Rev. D
Dynamical generation of spin squeezing in ultra-cold dipolar molecules
Creators: name: Bilitewski, Thomas
name: De Marco, Luigi
name: Li, Jun-Ru
name: Matsuda, Kyle
name: Tobias, William G.
name: Valtolina, Giacomo
name: Ye, Jun
name: Rey, Ana Maria
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We study a bulk fermionic dipolar molecular gas in the quantum degenerate regime confined in a two-dimensional geometry. We consider two rotational states that encode a spin 1/2 degree of freedom. We derive a long-range interacting XXZ model describing the many-body spin dynamics of the molecules valid in the regime where motional degrees of freedom are frozen. Due to the spatially extended nature of the harmonic oscillator modes, the interactions in the spin model are very long-ranged and the system behaves close to the collective limit, resulting in robust dynamics and generation of entanglement in the form of spin squeezing even at finite temperature and in presence of dephasing and chemical reactions. We demonstrate how the internal state structure can be exploited to realise time-reversal and enhanced metrological sensing protocols.
description: 4 pages, 4 figures + supplementary (12 pages, 6 figures
Prognostic significance of preoperative neutrophil-to-lymphocyte ratio and platelet-to-lymphocyte ratio in patients with glioma
Creators: name: Wang, Junli
name: Xiao, Wenjing
name: Chen, Wanyi
name: Hu, Yonghe
Publisher: name: Technische Universität Dortmund
Year: 2018
Subjects: subject: Glioma
subject: Neutrophil to lymphocyte ratio
subject: Platelet to lymphocyte ratio
subject: Prognosis
subject: 610

description: The neutrophil-to-lymphocyte ratio (NLR) and platelet-to-lymphocyte ratio (PLR) have been recognized as inflammatory markers and used as prognostic makers in various cancers. The present study sought to investigate the prognostic role of NLR and PLR in Chinese patients with glioma. Clinical data, including NLR, PLR and overall survival (OS), were collected from 112 patients who underwent surgery to treat primary glioma. Kaplan-Meier survival analysis as well as uni- and multivariate Cox regression were performed to examine potential associations of preoperative NLR and PLR with OS. Among all patients, mean NLR was 3.80±1.48 and mean PLR was 183.60 ±81.38. NLR increased with increasing WHO tumor grade (p < 0.05), but PLR did not (p > 0.05). Patients with NLR ≥ 4 had significantly shorter mean OS (20.75±7.68 months) than patients with NLR < 4 (26.91±7.50 months; p < 0.001). Similarly, patients with PLR ≥ LR had significantly shorter OS than patients with PLR < 200 (p = 0.007). Univariate Cox analysis identified the following parameters as significantly associated with worse OS: NLR (≥ 4), PLR (> 200), tumor size (≥ 5 cm), WHO grade (III/IV), and Karnofsky Performance Status (< 70). Multivariate analysis identified only NLR > 4 as an independent predictor of OS (HR 1.932, 95 % CI 1.011 to 3.694, p = 0.046). Our results suggest that at least in Chinese patients, increased preoperative NLR and PLR are associated with worse OS, and NLR may be an independent risk factor to identify glioma patients with poor prognosis. These results should be validated and extended in larger clinical studies.
description: EXCLI Journal;Vol. 17 2018
Metachronon – The Sound of the Instant When Time Wept
Creators: name: Souza Silva, Jaconaazar
Publisher: name: Zenodo
Year: 2025
Subjects: Metachronon
XChronos
Conscious time
Symbolic time
Sonic ontology
Audio metaphysics
Temporal collapse
Jesus wept
Subjective time
Spiritual resonance
Harmonic symbolism
Deep listening
Sonic art
Consciousness studies
Philosophical audio
Audiovisual philosophy
IFB Recanto das Emas
Jaconaazar Souza Silva

description: This audio work is a symbolic composition developed as part of the XChronos project by Jaconaazar Souza Silva. It represents the concept of the Metachronon — the most sacred and intense symbolic unit of conscious time.

The Metachronon is not just a moment. It is a collapse of affective, historical, and spiritual presence. It occurs when pain transforms into presence, when truth touches perception, and when time becomes sacred.

Inspired by the biblical verse “Jesus wept” (John 11:35), this piece unfolds in five distinct stages:

Sacred Silence (0–4s) – The pre-verbal void.

Collapse Pulse (4–5s, 444Hz) – A tear breaking the veil of time.

Spiritual Resonance (5–30s, 528Hz + 396Hz + 963Hz) – Harmonic layers of love, release, and divine reconnection.

Cosmic Cry (30–38s) – A non-human, whispered voice echoing before speech.

Ethereal Dissolution (38–60s, 111Hz) – Time dissolving with glitches and introspective vibration.

This sound is ideal for philosophical meditations, artistic installations, symbolic reflections, and any context where time is experienced as depth, not duration.

The Metachronon is not a sound that measures time.It is a sound that makes time kneel.
INVESTING IN SOILS: FIELD BUNDS AND MICROCATCHMENTS IN BURKINA FASO
Creators: name: Kazianga, Harounan
name: Masters, William A.
name: Kazianga, Harounan
name: Masters, William A.
Publisher: name: Unknown
Year: 2001
Subjects: Land Economics/Use

description: This research uses field-level data from Burkina Faso to ask what determines farmers' investment in two well-known soil and water conservation techniques: field bunds (barriers to soil and water runoff), and microcatchments (small holes in which seeds and fertilizers are placed). Survey data for 1993 and 1994 are used to estimate Tobit functions, compute elasticities of adoption and intensity of use, perform robustness tests and estimate alternative models. Controlling for land and labor abundance and other factors we find that those who have more ownership rights over farmland, and who do more controlled feeding of livestock, tend to invest more in both technologies. The result suggests that responding to land scarcity with clearer property rights over cropland and pasture could help promote investment in soil conservation, and raise the productivity of factors applied to land.
Medical image analysis with machine learning techniques and deep learning neural networks
Creators: name: Γιαννουλόπουλος, Γεώργιος
name: Giannoulopoulos, George
Publisher: name: Πανεπιστήμιο Πειραιώς
Year: 2020
Subjects: subject: EfficientNet
subject: Skin lesion classification
subject: Image classification
subject: Medical imaging
subject: Skin cancer
subject: Melanoma classification
subject: Dermoscopy
subject: Deep learning
subject: Neural networks
subject: Machine learning

description: Οι πρόσφατες εξελίξεις στον τομέα της μηχανικής μάθησης στη μηχανική όραση θα εξεταστούν ,ενώ ένα υποσύνολο αυτών των αλγορίθμων θα δοκιμαστεί στο πρόβλημα της ταξινόμησης δερματικών παθήσεων. Πιο συγκεκριμένα, η απόδοση των βαθιών νευρωνικών δικτύων στη ταξινόμηση εικόνων θα παρουσιαστεί και δοκιμαστεί. Τέλος, μια συγκεκριμένη οικογένεια βαθιών νευρωνικών δικτύων που λέγονται EfficientNets θα εκπαιδευτεί στο σύνολο δεδομένων του ISIC challenge του 2019.
3-junction SQUID rocking ratchet
Creators: name: Sterck, A.
name: Kleiner, R.
name: Koelle, D.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We investigate 3-junction SQUIDs which show voltage rectification if biased with an ac current drive with zero mean value. The Josephson phase across the SQUID experiences an effective ratchet potential, and the device acts as an efficient rocking ratchet, as demonstrated experimentally for adiabatic and nonadiabatic drive frequencies. For high-frequency drives the rectified voltage is quantized due to synchronization of the phase dynamics with the external drive. The experimental data are in excellent agreement with numerical simulations including thermal fluctuations.
description: 5 pages, 4 figures -- Fig.4 revised
Beyond 4D Tracking: Using Cluster Shapes for Track Seeding
Creators: name: Fox, Patrick J.
name: Huang, Shangqing
name: Isaacson, Joshua
name: Ju, Xiangyang
name: Nachman, Benjamin
Publisher: name: arXiv
Year: 2020
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: Machine Learning (stat.ML)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Tracking is one of the most time consuming aspects of event reconstruction at the Large Hadron Collider (LHC) and its high-luminosity upgrade (HL-LHC). Innovative detector technologies extend tracking to four-dimensions by including timing in the pattern recognition and parameter estimation. However, present and future hardware already have additional information that is largely unused by existing track seeding algorithms. The shape of clusters provides an additional dimension for track seeding that can significantly reduce the combinatorial challenge of track finding. We use neural networks to show that cluster shapes can reduce significantly the rate of fake combinatorical backgrounds while preserving a high efficiency. We demonstrate this using the information in cluster singlets, doublets and triplets. Numerical results are presented with simulations from the TrackML challenge.
description: 19 pages, 14 figures; v2: journal version
Competition between phonon superconductivity and Kondo screening in mixed valence and heavy fermion compounds
Creators: name: Barzykin, Victor
name: Gor'kov, Lev P.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We consider competition of Kondo effect and s-wave superconductivity in heavy fermion and mixed valence superconductors, using the phenomenological approach for the periodic Anderson model. Similar to the well known results for single-impurity Kondo effect in superconductors, we have found principal possibility of a re-entrant regime of the superconducting transition temperature, $T_c$, in heavy fermion superconductors in a narrow range of model parameters and concentration of f-electrons. Suppression of $T_c$ in mixed valence superconductors is much weaker. Our theory has most validity in the low-temperature Fermi liquid regime, without re-entrant behavior of $T_c$. To check its applicability, we performed the fit for the $x$-dependence of $T_c$ in Ce$_{1-x}$La$_x$Ru$_3$Si$_2$ and obtained an excellent agreement with the experimental data, although no re-entrance was found in this case. Other experimental data are discussed in the light of our theoretical analysis. In particular, we compare temperatures of the superconducting transition for some known homologs, i.e., the analog periodic lattice compounds with and without f-elements. For a few pairs of homologs superconductivity exists only in the heavy fermion materials, thus confirming uniqueness of superconductivity mechanisms for the latter. We suggest that for some other compounds the value of $T_c$ may remain of the same order in the two homologs, if superconductivity originates mainly on some light Fermi surface, but induces sizable superconducting gap on another Fermi surface,for which hybridization or other heavy fermion effects are more significant.
description: 11 pages, 4 figures, pdf
title: Μορφοποίηση εικονικού περιβάλλοντος της αρχαίας Αθήνας με την κατασκευή κτιρίων και αγαλμάτων
title: Formation of ancient Athens' virtual environment with the construction of buildings and statues
titleType: AlternativeTitle
Creators: name: Γκίκας, Γεώργιος
Publisher: name: Πανεπιστήμιο Πειραιώς
Year: 2020
Subjects: subject: Προσομοίωση
subject: Unity 3D
subject: Μορφοποίηση
subject: Αρχιτέκτονας
subject: State machine
subject: Εικονικό περιβάλλον αρχαίας Αθήνας

description: Η παρούσα διπλωματική αναφορά έχει ως στόχο την περιγραφή και τη δημιουργία ενός εικονικού περιβάλλοντος στην Αρχαία Αθήνα. Αυτή η σημαντική πόλη του αρχαίου κόσμου που γέννησε τη Δημοκρατία και κυριάρχησε στο εμπόριο, τον πολιτισμό και τις τέχνες, έγραψε παράλληλα ιστορία με τον Χρυσό Αιώνα του Περικλή, ενός σημαντικού πολιτικού, ρήτορα και στρατηγού. Η ανάπτυξη των τεχνών και πολλών οικοδομημάτων γνωστών σε παγκόσμιο επίπεδο, συνέβη τα χρόνια της εξουσίας του. Για την πειστικότερη αναπαράσταση της μορφοποίησης, δίνεται η ιδιότητα του Αρχιτέκτονα σε έναν εκ των χαρακτήρων της προσομοίωσης. Έτσι, η πόλη σχηματίζεται μπροστά στα μάτια του θεατή. Ο αρχιτέκτονας διαθέτει μια ομάδα χαρακτήρων-ατόμων που τον βοηθούν στην υλοποίηση των κατασκευών, που μέσα από την εμπειρία και την πείρα που αποκτούν σταδιακά στη διάρκεια της προσομοίωσης, καταλήγουν να έχουν μια πολύ καλή φήμη στην πόλη. Η υλοποίηση και κατασκευή οικοδομημάτων όμως, γίνεται παράλληλα με την υπόλοιπη ζωή τους, που αποτελείται από τον ελεύθερο χρόνο τους και την ξεκούραση τους. Παράλληλα ο χαρακτήρας-αρχιτέκτονας ασχολείται με τη γλυπτική και τον ελεύθερο χρόνο του κοσμεί με αγάλματα την Αθήνα. Τα αγάλματα αυτά κάνουν πιο πειστικό το σκηνικό της αρχαίας Αγοράς της Αθήνας. Επίσης, ανάλογα με τη δραστηριότητα των χαρακτήρων έχουν χρησιμοποιηθεί και σχετικοί ήχοι προκειμένου ο δέκτης της εμπειρίας να βιώσει με κάθε δυνατό τρόπο τη ζωή της τότε Αθήνας. Ο τρόπος ζωής του αρχιτέκτονα και των υπολοίπων χαρακτήρων διαφέρουν αρκετά. Εκτός από το προγραμματιστικό κομμάτι της εργασίας, σκοπός είναι να αναδειχθεί και ο τρόπος που οι πολίτες της Αρχαίας Αθήνας ζούσαν εκείνα τα χρόνια. Η διπλωματική γίνεται για το Πρόγραμμα Μεταπτυχιακών Σπουδών του Πανεπιστημίου Πειραιώς.