cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Challenging luminosity measurements at the Electron-Ion Collider
Creators: name: Piotrzkowski, Krzysztof
Publisher: name: arXiv
Year: 2021
Subjects: subject: Accelerator Physics (physics.acc-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: A precise determination of absolute luminosity, using the bremsstrahlung process, at the future Electron-Ion Collider (EIC) will be very demanding, and its three major challenges are discussed herein. First, the bremsstrahlung rate suppression due to the so-called beam size effect has to be well controlled. Secondly, the impact of huge synchrotron radiation fluxes should be mitigated. Thirdly, enormous bremsstrahlung event rates, in excess of 10 GHz, have to be coped with. A basic layout of the luminosity measurement setup at the EIC, addressing these issues, is proposed, including preliminary detector technology choices. Finally, the uncertainties of three proposed methods are also discussed.
description: 12 pages, 4 figures
Machine learning potentials for complex aqueous systems made simple
Creators: name: Schran, Christoph
name: Thiemann, Fabian L.
name: Rowe, Patrick
name: Müller, Erich A.
name: Marsalek, Ondrej
name: Michaelides, Angelos
Publisher: name: arXiv
Year: 2021
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Simulation techniques based on accurate and efficient representations of potential energy surfaces are urgently needed for the understanding of complex aqueous systems such as solid-liquid interfaces. Here, we present a machine learning framework that enables the efficient development and validation of models for complex aqueous systems. Instead of trying to deliver a globally-optimal machine learning potential, we propose to develop models applicable to specific thermodynamic state points in a simple and user-friendly process. After an initial ab initio simulation, a machine learning potential is constructed with minimum human effort through a data-driven active learning protocol. Such models can afterwards be applied in exhaustive simulations to provide reliable answers for the scientific question at hand. We showcase this methodology on a diverse set of aqueous systems with increasing degrees of complexity. The systems chosen here comprise bulk water with different ions in solution, water on a titanium dioxide surface, as well as water confined in nanotubes and between molybdenum disulfide sheets. Highlighting the accuracy of our approach with respect to the underlying ab initio reference, the resulting models are evaluated in detail with an automated validation protocol that includes structural and dynamical properties and the precision of the force prediction of the models. Finally, we demonstrate the capabilities of our approach for the description of water on the rutile titanium dioxide (110) surface to analyze the structure and mobility of water on this surface. Such machine learning models provide a straightforward and uncomplicated but accurate extension of simulation time and length scales for complex systems.
อิทธิพลของอุปกรณ์ด้านอากาศพลศาสตร์ที่มีต่ออัตราการสิ้นเปลืองเชื้อเพลิงของรถบรรทุก
Creators: name: ปรัชญา มุขดา
Publisher: name: มหาวิทยาลัยมหาสารคาม
Year: 2558
Subjects: อากาศพลศาสตร์, รถบรรทุก, คำนวณเชิงตัวเลขของไหลพลศาสตร์, อัตราการสิ้นเปลืองเชื้อเพลิง

description: 3, 34, วารสารวิทยาศาสตร์และเทคโนโลยี มหาวิทยาลัยมหาสารคาม
title: Employer branding – nowoczesne rozwiązanie problemu rotacji pracowników
Creators: name: Spychała, Małgorzata
name: Bartecki, Tadeusz
name: Brzóska, Michał
Publisher: name: Publishing House of Poznan University of Technology
Year: 2019

description: Zeszyty Naukowe Politechniki Poznańskiej. Organizacja i Zarządzanie, 79, 163-179
Nonlinear surface impurity in a semi-infinite 2D square lattice
Creators: name: Molina, Mario I.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: We examine the formation of localized states on a generalized nonlinear impurity located at, or near the surface of a semi-infinite 2D square lattice. Using the formalism of lattice Green functions, we obtain in closed form the number of bound states as well as their energies and probability profiles, for different nonlinearity parameter values and nonlinearity exponents, at different distances from the surface. We specialize to two cases: impurity close to an "edge" and impurity close to a "corner". We find that, unlike the case of a 1D semi-infinite lattice, in 2D, the presence of the surface helps the formation of a localized state.
description: 6 pages, 7 figures, submitted to PRB
Mass sum rule of hadrons in the QCD instanton vacuum
Creators: name: Zahed, Ismail
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We briefly review the key aspect of the QCD instanton vacuum in relation to the quantum breaking of conformal symmetry and the trace anomaly. We use Ji$^\prime s$ invariant mass decomposition of the energy momentum tensor together with the trace anomaly, to discuss the mass budget of the nucleon and pion in the QCD instanton vacuum. A measure of the gluon condensate in the nucleon, is a measure of the compressibility of the QCD instanton vacuum as a dilute topological liquid.
description: 17 pages, 2 figures
Testing Large-Scale Structure Measurements Against Fisher Matrix Predictions
Creators: name: Foroozan, Setareh
name: Krolewski, Alex
name: Percival, Will J.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We compare Baryonic Acoustic Oscillation (BAO) and Redshift Space Distortion (RSD) measurements from recent galaxy surveys with their Fisher matrix based predictions. Measurements of the position of the BAO signal lead to constraints on the comoving angular diameter distance $D_{M}$ and the Hubble distance $D_{H}$ that agree well with their Fisher matrix based expectations. However, RSD-based measurements of the growth rate $f σ_{8}$ do not agree with the predictions made before the surveys were undertaken, even when repeating those predictions using the actual survey parameters. We show that this is due to a combination of effects including degeneracies with the geometric parameters $D_{M}$ and $D_{H}$, and optimistic assumptions about the scale to which the linear signal can be extracted. We show that measurements using current data and large-scale modelling techniques extract an equivalent amount of signal to that in the linear regime for $k < 0.08 \,h\,{\rm Mpc}^{-1}$, remarkably independent of the sample properties and redshifts covered.
description: 36 pages, 9 figures
Deviations from the local field approximation in negative streamer heads
Creators: name: Li, Chao
name: Brok, W. J. M.
name: Ebert, Ute
name: van der Mullen, J. J. A. M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: Negative streamer ionization fronts in nitrogen under normal conditions are investigated both in a particle model and in a fluid model in local field approximation. The parameter functions for the fluid model are derived from swarm experiments in the particle model. The front structure on the inner scale is investigated in a 1D setting, allowing reasonable run-time and memory consumption and high numerical accuracy without introducing super-particles. If the reduced electric field immediately before the front is >= 50kV/(cm bar), solutions of fluid and particle model agree very well. If the field increases up to 200kV/(cm bar), the solutions of particle and fluid model deviate, in particular, the ionization level behind the front becomes up to 60% higher in the particle model while the velocity is rather insensitive. Particle and fluid model deviate because electrons with high energies do not yet fully run away from the front, but are somewhat ahead. This leads to increasing ionization rates in the particle model at the very tip of the front. The energy overshoot of electrons in the leading edge of the front actually agrees quantitatively with the energy overshoot in the leading edge of an electron swarm or avalanche in the same electric field.
description: The paper has 17 pages, including 15 figures and 3 tables
Quantum pattern formation dynamics of photoinduced nucleation process
Creators: name: Ishida, Kunio
name: Nasu, Keiichiro
Publisher: name: arXiv
Year: 2008
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study the dynamics of quantum pattern formation processes in molecular crystals which is a concomitant with photoinduced nucleation. Since the nucleation process in coherent regime is driven by the nonadiabatic transition in each molecule followed by the propagation of phonons, it is necessary to take into account the quantum nature of both electrons and phonons in order to pursue the dynamics of the system. Therefore, we employ a model of localized electrons coupled with a quantized phonon mode and solved the time-dependent Schrödinger equation numerically. We found that there is a minimal size of clusters of excited molecules which triggers the photoinduced nucleation process, i.e., nucleation does not take place unless sufficient photoexcitation energy is concentrated within a narrow area of the system. We show that this result means that the spatial distribution of photoexcited molecules plays an important role in the nonlinearity of the dynamics and also of the optical properties observed in experiments. We calculated the conversion ratio, the nucleation rate, and correlation functions to reveal the dynamical properties of the pattern formation process, and the initial dynamics of the photoinduced structural change is discussed from the viewpoint of pattern formation.
description: 28 pages, 14 figures
title: Czynniki kształtujące kompetencje menedżerskie
Creators: name: Spychała, Małgorzata
name: Branowska, Agata
Publisher: name: Publishing House of Poznan University of Technology
Year: 2019

description: Zeszyty Naukowe Politechniki Poznańskiej. Organizacja i Zarządzanie, 79, 181-192
Multi-scale photonic emissivity engineering for relativistic lightsail thermal regulation
Creators: name: Brewer, John
name: Campbell, Matthew F.
name: Kumar, Pawan
name: Kulkarni, Sachin
name: Jariwala, Deep
name: Bargatin, Igor
name: Raman, Aaswath P.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: The Breakthrough Starshot Initiative aims to send a gram-scale probe to Proxima Centuri B using a laser-accelerated lightsail traveling at relativistic speeds. Thermal management is a key lightsail design objective because of the intense laser powers required but has generally been considered secondary to accelerative performance. Here, we demonstrate nanophotonic photonic crystal slab reflectors composed of 2H-phase molybdenum disulfide and crystalline silicon nitride, highlight the inverse relationship between the thermal band extinction coefficient and the lightsail's maximum temperature, and examine the trade-off between the acceleration distance and setting realistic sail thermal limits, ultimately realizing a thermally endurable acceleration minimum distance of 16.3~Gm. We additionally demonstrate multi-scale photonic structures featuring thermal-wavelength-scale Mie resonant geometries, and characterize their broadband Mie resonance-driven emissivity enhancement and acceleration distance reduction. Our results highlight new possibilities in simultaneously controlling optical and thermal response over broad wavelength ranges in ultralight nanophotonic structures.
description: 15 pages, 4 figures
Relative clauses, vowel hiatus resolution
Creators: name: Doko, Jeanne
name: Koutouan, Evelyne
name: Jarvis, Rebecca
name: Russell, Katherine
name: Kouadio, Timothée
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2023
Subjects: subject: ebr

description: Elicitation of relative clauses, vowel hiatus resolution and clause-final vowel morphemes (focus 'o', negation 'a', wh- question 'ɛ').
Predictive validity of an implicit association test measuring attitudes toward cannabis
Creators: name: Howell, Jennifer
name: Meese, William
name: Lindgren, Kristen
Publisher: name: OSF Registries
Year: 2023
Subjects: subject: Clinical Psychology
subject: Health Psychology
subject: Social Psychology
subject: Social and Behavioral Sciences
subject: Psychology
subject: FOS: Psychology
subject: cannabis
subject: health behavior
subject: implicit attitudes
subject: substance use

description: The primary purpose of this study is to examine the internal reliability and predictive validity of an implicit association test designed by Ramirez and colleagues (2020) to measure attitudes toward cannabis as dangerous or safe.
DeepSZ: Identification of Sunyaev-Zel'dovich Galaxy Clusters using Deep Learning
Creators: name: Lin, Zhen
name: Huang, Nicholas
name: Avestruz, Camille
name: Wu, W. L. Kimmy
name: Trivedi, Shubhendu
name: Caldeira, João
name: Nord, Brian
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Galaxy clusters identified from the Sunyaev Zel'dovich (SZ) effect are a key ingredient in multi-wavelength cluster-based cosmology. We present a comparison between two methods of cluster identification: the standard Matched Filter (MF) method in SZ cluster finding and a method using Convolutional Neural Networks (CNN). We further implement and show results for a `combined' identifier. We apply the methods to simulated millimeter maps for several observing frequencies for an SPT-3G-like survey. There are some key differences between the methods. The MF method requires image pre-processing to remove point sources and a model for the noise, while the CNN method requires very little pre-processing of images. Additionally, the CNN requires tuning of hyperparameters in the model and takes as input, cutout images of the sky. Specifically, we use the CNN to classify whether or not an 8 arcmin $\times$ 8 arcmin cutout of the sky contains a cluster. We compare differences in purity and completeness. The MF signal-to-noise ratio depends on both mass and redshift. Our CNN, trained for a given mass threshold, captures a different set of clusters than the MF, some of which have SNR below the MF detection threshold. However, the CNN tends to mis-classify cutouts whose clusters are located near the edge of the cutout, which can be mitigated with staggered cutouts. We leverage the complementarity of the two methods, combining the scores from each method for identification. The purity and completeness of the MF alone are both 0.61, assuming a standard detection threshold. The purity and completeness of the CNN alone are 0.59 and 0.61. The combined classification method yields 0.60 and 0.77, a significant increase for completeness with a modest decrease in purity. We advocate for combined methods that increase the confidence of many lower signal-to-noise clusters.
Multiplexing schemes and ARQ protocols for multiple-receiver systems
Creators: name: Cam, Richard
Publisher: name: University of British Columbia
Year: 2009

description: The throughput performances of some multiplexing and ARQ schemes are evaluated for a multiple-receiver system in which the quality of the channels varies over time. Packetized data are sent to the receivers from a server (transmitter), which uses a multiplexing scheme to assign bandwidth, as well as an ARQ protocol for error control. Two multiplexing schemes, round-robin multiplexing and an adaptive scheme, are considered. In round-robin multiplexing, each receiver is served periodically. With the adaptive scheme, the transmitter selects at each slot, the receiver whose channel quality is judged to have the highest probability of successful data packet reception. These multiplexing schemes are evaluated in conjunction with the three standard ARQ schemes, stop-and-wait, go-back-N, and ideal selective repeat ARQ. The throughput analysis takes into account the effects of feedback errors and imperfect channel state estimates. A scheme for reducing the unfavorable effects of feedback errors on the performance of continuous ARQ protocols is proposed and analyzed for a point-to-point stationary channel. In this scheme, the transmitter may not immediately retransmit a packet that has timed out but whose status is unknown due to lost feedback. Instead, the transmitter may delay retransmission for up to a given number of slots (the “retransmission delay parameter”), sending new packets in the mean time while waiting for successfully received feedback. The analysis considers the case where complete information of the receiver state is fed back to the transmitter. Under this assumption, it is shown that the effects of feedback errors can be greatly reduced when the retransmission delay parameter is optimized. This scheme is extended to the multiple-receiver system as well. Also discussed is a procedure for maximizing the effective data transmission rate of an ARQ system under certain bandwidth and power constraints. The procedure provides a means for jointly optimizing system design parameters such as the packet length, as well as coding and modulation schemes. The principles behind this procedure may also be useful for evaluating and optimizing the data transmission rate performance of the multiple-receiver system.
Symplectic integration of equations of motion and variational equations for extrasolar systems of N - planets
Creators: name: Σκουλίδου, Δήμητρα Κωνσταντίνου
Publisher: name: Aristotle University of Thessaloniki
Year: 2017
Subjects: Συμπλεκτικός ολοκληρωτής
Εξισώσεις μεταβολών
Εξωηλιακά συστήματα
Symplectic integrator
Variational equations
Extrasolar systems

description: Σκοπός αυτής της διατριβής είναι η συμπλεκτική ολοκλήρωση των εξισώσεων της κίνησης και των εξισώσεων των μεταβολών σε ένα σύστημα Ν - σωμάτων. Για να επιτύχουμε την αριθμητική ολοκλήρωση υλοποιούμε τον αλγόριθμο του συμπλεκτικού ολοκληρωτή 6ης τάξης του Yoshida. Για την ολοκλήρωση των εξισώσεων των μεταβολών εφαρμόσαμε τη μέθοδο Tangent Map (TM). Ο αλγόριθμος που δημιουργήσαμε τον εφαρμόσαμε σε τρία εξωπλανητικά συστήματα τα GJ 876, HR 8799 και TRAPPIST-1. Ο Γρήγορος Δείκτης Lyapunov (Fast Lyapunov Indicator, FLI) του συστήματος, υπολογίζεται με σκοπός την ταξινόμηση των τροχιών στο σύστημα σε τακτικές και χαοτικές. Εφαρμόζουμε επίσης το κριτήριο σταθερότητας κατά την ποσότητα Angular Momentum Deficit (AMD) ή Έλλειμμα Στροφορμής για την κατηγοριοποίηση των συστημάτων ως ευσταθή ή ασταθή κατά την ποσότητα αυτή
description: The purpose of this thesis is the symplectic integration of the equations of motion and the variational equations for a N - body system. In order to implement the integration we use a symplectic 6th order integrator presented by Yoshida. For the integration of variational equations we apply the Tangent Map (TM) method. The algorithm is applied on three Extrasolar systems : GJ 876, HR 8799 and TRAPPIST-1. The Fast Lyapunov Indicator (FLI) of the system is calculated for all systems and it is used as a tool to detect chaotic orbits. We also apply the Angular Momentum Deficit criterion to decide whether this systems are AMD - stable or not
Διόρθωση Κτηματολογικής εγγραφής κατά τα άρθρα 6§2, 6§3, 6§4, 18§1, 19§2 Ν. 2664/1998 : Συσχετίσεις
Creators: name: Αβραμίδου, Ιωάννα Ιορδάνη
Publisher: name: Aristotle University of Thessaloniki
Year: 2017
Subjects: Κτηματολογική εγγραφή
Διόρθωση
Συσχετίσεις
Cadastral registration
Correction
Correlations

description: Οι πρώτες εγγραφές, μετά το πέρας της κτηματογράφησης, έχουν τεράστια σημασία για την ασφαλή λειτουργία του Κτηματολογίου. Αποτελούν την βάση στην οποία στηρίζεται κάθε επιγενόμενη εγγραφή, αλλά και την βάση για τις οριστικές πλέον εγγραφές, όταν αυτές επισυμβούν. Η ασφάλειά τους, επομένως, είναι όρος sine qua non για την ομαλή λειτουργία του Κτηματολογίου. Η παρούσα μελέτη επιχειρεί να παρουσιάσει τις βασικές δυνατότητες που παρέχει ο Ν. 2664/1998 για την διόρθωση των ανακριβών πρώτων κτηματολογικών εγγραφών και να συμβάλλει στην επιλογή της διαδικασίας που ενδείκνυται σε σχέση με το είδος της ανακρίβειας που ενδεχομένως φέρει μια κτηματολογική εγγραφή, με γνώμονα τις απόψεις που έχουν διατυπωθεί στην θεωρία και στην νομολογία. Παρουσιάζονται και αναλύονται οι γενικές έννοιες που πραγματεύεται η μελέτη, προκειμένου να καταστεί σαφές το πλαίσιο στο οποίο κινούνται οι διαδικασίες διόρθωσης. Στη συνέχεια, γίνεται ανάπτυξη των υπό εξέταση διαφορετικών διαδικασιών διόρθωσης των πρώτων κτηματολογικών εγγραφών. Ειδικότερα, προσεγγίζονται τα κομβικά εκείνα στοιχεία (νομιμοποίηση, διαδικασίες, αρμοδιότητα) που απαιτούνται για την ενεργοποίησή τους. Τέλος, επιχειρείται μία συγκριτική επισκόπηση των διαδικασιών. Η νομολογιακή έκρηξη των τελευταίων ετών έθεσε σημαντικές βάσεις τόσο για την ερμηνεία και την εφαρμογή των διατάξεων του νόμου, όσο και για την μεταξύ τους σχέση. Σκιαγραφούνται, επίσης, ζητήματα σώρευσης, προδικασίας, απαραδέκτου ή μη, που ανακύπτουν και ταλανίζουν όσους ασχολούνται με το κτηματολόγιο
description: After the cadastral survey, initial cadastral registrations are very important for a safe Cadastre operation. They form the basis for every posterior registration, as well as the basis for the final registrations, when they will occur. Their security, thus, is a sine qua non term for the smooth function of the Cadastre. This paper presents the major procedures in Law 2664/1998 for the correction of inaccurate initial cadastral registrations and aims to contribute in choosing the appropriate procedure, regarding the type of error an initial registration contains, driven by points of view in the academic theory and case law. General notions are being presented and analyzed in order to define the frame for the correction procedures. Furthermore, these different correction procedures under examination are developed. In particular, there is an approach on the basic characteristics (legalization, procedures, competence) necessary for their activation. Finally, a comparative review is attempted. The case law explosion in the recent years has put ground rules for the interpretation and the application of the law provisions, as well as their correlation
การเปรียบเทียบเทคนิคเหมืองข้อมูลในการจำแนกใบหน้า
Creators: name: ชลิตา เจริญเนตร
Publisher: name: มหาวิทยาลัยมหาสารคาม
Year: 2558
Subjects: ซัพพอร์ตเวกเตอร์แมชชีน, การรู้จำใบหน้า, การจำแนก, การวิเคราะห์องค์ประกอบหลัก, ค่าคุณลักษณะเด่น

description: 3, 34, วารสารวิทยาศาสตร์และเทคโนโลยี มหาวิทยาลัยมหาสารคาม
Τηλεπισκοπικές και γεωπληροφοριακές μέθοδοι στην ανίχνευση περιβαλλοντικών αλλαγών
Creators: name: Κοταρίδης, Ιωάννης Σάββα
Publisher: name: Aristotle University of Thessaloniki
Year: 2017
Subjects: Ανίχνευση αλλαγών
Κάλυψη γης
Τηλεπισκόπηση
Change detection
Land cover
Remote sensing

description: Η διπλωματική εργασία στοχεύει στην ανίχνευση των περιβαλλοντικών αλλαγών στην ευρύτερη περιοχή της Κοζάνης μεταξύ των ετών 1987 και 2016 με τη χρήση τόσο τηλεπισκοπικών όσο και γεωπληροφοριακών μεθόδων. Το πρώτο κεφάλαιο αναφέρεται σε εισαγωγικές έννοιες σχετικά με την Τηλεπισκόπηση, ένα Γεωγραφικό Σύστημα Πληροφοριών και τη σχέση τους με το περιβάλλον. Επιπρόσθετα, προσδιορίζεται η έννοια της κάλυψης γης και παρατίθενται ορισμένες μέθοδοι ανίχνευσης αλλαγών. Στο δεύτερο κεφάλαιο γίνεται περιγραφή του Ευρωπαϊκού προγράμματος Corine και ιδιαίτερα του καταλόγου κάλυψης γης. Στο τρίτο κεφάλαιο παρουσιάζονται συνοπτικά πληροφορίες που αφορούν την ευρύτερη περιοχή μελέτης. Ακολούθως, περιγράφεται αναλυτικά η μεθοδολογία που χρησιμοποιήθηκε για την ανίχνευση αλλαγών στην κάλυψη γης της περιοχής μελέτης. Για το σκοπό αυτό αποκτήθηκαν μία πολυφασματική εικόνα του δορυφόρου Landsat-5 του έτους 1987 και μία του Landsat-8 του έτους 2016, στις οποίες εφαρμόστηκε εποπτευόμενη ταξινόμηση με τη χρήση του αλγορίθμου μεγίστης πιθανοφάνειας. Στη συνέχεια, παρουσιάζονται τα ποιοτικά και ποσοτικά αποτελέσματα των μεταβολών με τη διαφορά εικόνας για το δείκτη βλάστησης (ΔNDVI) και τη σύγκριση των ταξινομημένων εικόνων μέσω της οπτικής ερμηνείας, της γραφικής απεικόνισης των μεταβολών και των διαθέσιμων παράγωγων πινάκων. Τέλος, στο παράρτημα γίνεται αναφορά στις διαστημικές αποστολές Landsat και Sentinel
description: This thesis aims to detect the environmental changes in the wider area of Kozani, in northern Greece, between the years 1987 and 2016 with the use of both Remote Sensing and Geoinformation methods. The first chapter consists of introductory concepts regarding Remote Sensing, Geographic Information System and their relation to environment. Additionally, the meaning of land cover is defined and change detection methods are listed. In the second chapter there is a description of the European programme Corine and especially the Land Cover inventory. In the third chapter information about the wider study area are briefly described. Hereupon, there is a detailed description of the methodology used in detecting land cover changes in the study area. For that purpose two multispectral images were acquired, a Landsat-5 satellite image of 1987 and a Landsat-8 satellite image of 2016 and a supervised classification was applied with the use of maximum likelihood algorithm. Afterwards, the qualitative and quantitative results of the changes are presented, with NDVI image differencing and post-classification comparison that includes visual interpretation, plot of the changes and available derivative matrices. Lastly, in the annex reference is made to Landsat and Sentinel satellite missions
title: Increase of nutritional security in Sub-Saharan Africa through the production of dried products from underutilized crops
Creators: name: Sturm, Barbara
name: Raut, Sharvari
name: Chikpah, Solomon Kofi
name: Ndisya, John
name: Hensel, Oliver
name: Esper, Albert
name: Korese, Joseph Kudadam
Publisher: name: KOBRA Universität Kassel
Year: 2022
Subjects: subject: cocoyam
subject: food security
subject: malnutrition
subject: orange-fleshed sweet potato
subject: sub-Saharan Africa
subject: underutilized crops
classificationCode: 500
subject: 500
classificationCode: 630
subject: 630
classificationCode: Subsaharisches Afrika
subject: Subsaharisches Afrika
classificationCode: Taro
subject: Taro
classificationCode: Batate
subject: Batate
classificationCode: Ernährungssicherung
subject: Ernährungssicherung
classificationCode: Mangelernährung
subject: Mangelernährung
classificationCode: Trockenlebensmittel
subject: Trockenlebensmittel

description:
Currently, an estimated 20% of the population in Sub-Saharan Africa is food insecure with the incidence of hunger and malnutrition still rising. This trend is amplified by the socio-economic consequences of the COVID-19 pandemic. In contrast, more than a third of the harvestable perishable produce is lost due to a lack of preservation or failure to utilize preservation as is the case for underutilized crops (UCs). Moreover, some of the preservation techniques utilized are poor, leading to the deterioration of food quality, especially the micronutrients. In this study, we thus exemplarily investigated the impact of different drying settings on the quality of two highly nutritious UCs, namely cocoyam and orange-flesh sweet potato (OFSP) (40, 60, and 80 °C for cocoyam and 40, 50, 60, and 70 °C for OFSP) to deduce the optimum quality retention and further develop a theoretical design of processing units and processing guidelines for decentralized food processing. Drying cocoyam at 80 °C and OFSP at 60 °C, respectively resulted in a relatively shorter drying time (135 and 210 min), a lower total color difference (2.29 and 11.49-13.92), greater retentions for total phenolics (0.43 mg GAE/100 gDM and 155.0-186.5 mg GAE/100 gDM), total flavonoid (128 mg catechin/100 gDM and 79.5-81.7 mg catechin/100 gDM) and total antioxidant activity (80.85% RSA and 322.58-334.67 mg AAE/100 gDM), respectively for cocoyam and OFSP. The β-carotene, ascorbic acid and vitamin A activity per 100 gDM of the OFSP flours ranged between 6.91- 9.53 mg, 25.90 − 35.72 mg, and 0.53 − 0.73 mg RAE, respectively.
The Measure of a Measurement
Creators: name: Jorgensen, Palle E. T.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 81P15; 46B03; 47B25; 47B36; 37M25; 47A10; 81Q50

description: While finite non-commutative operator systems lie at the foundation of quantum measurement, they are also tools for understanding geometric iterations as used in the theory of iterated function systems (IFSs) and in wavelet analysis. Key is a certain splitting of the total Hilbert space and its recursive iterations to further iterated subdivisions. This paper explores some implications for associated probability measures (in the classical sense of measure theory), specifically their fractal components. We identify a fractal scale $s$ in a family of Borel probability measures $μ$ on the unit interval which arises independently in quantum information theory and in wavelet analysis. The scales $s$ we find satisfy $s\in \mathbb{R}_{+}$ and $s\not =1$, some $s <1$ and some $s>1$. We identify these scales $s$ by considering the asymptotic properties of $μ(J) /| J| ^{s}$ where $J$ are dyadic subintervals, and $| J| \to0$.
description: 18 pages, 3 figures, and references
Dissecting the Energy Budget of a Gamma-Ray Burst Fireball
Creators: name: Zhang, Bing
name: Wang, Yu
name: Li, Liang
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The jet composition and radiative efficiency of GRBs are poorly constrained from the data. If the jet composition is matter-dominated (i.e. a fireball), the GRB prompt emission spectra would include a dominant thermal component originating from the fireball photosphere, and a non-thermal component presumably originating from internal shocks whose radii are greater than the photosphere radius. We propose a method to directly dissect the GRB fireball energy budget into three components and measure their values by combining the prompt emission and early afterglow data. The measured parameters include the initial dimensionless specific enthalpy density ($η$), bulk Lorentz factors at the photosphere radius ($Γ_{\rm ph}$) and before fireball deceleration ($Γ_0$), the amount of mass loading ($M$), as well as the GRB radiative efficiency ($η_γ$). All the parameters can be derived from the data for a GRB with a dominant thermal spectral component, a deceleration bump feature in the early afterglow lightcurve, and a measured redshift. The results only weakly depend on the density $n$ of the interstellar medium when the composition ${\cal Y}$ parameter (typically unity) is specified.
description: Matching the version published in ApJL
Surrogate-based optimization with adaptive parallel infill strategy enhanced by inaccurate multi-objective search
Creators: name: Wang, Wenjie
name: Wu, Zeping
name: Wang, Donghui
name: Wang, Pengyu
name: Zhang, Weihua
name: Okolo, Patrick N.
name: Bennett, Gareth J.
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Space Science
subject: Medicine
subject: Ecology
subject: FOS: Biological sciences
subject: Biological Sciences not elsewhere classified
subject: Information Systems not elsewhere classified
subject: Mathematical Sciences not elsewhere classified

description: In recent decades, surrogate-based optimization (SBO) has been developed to replace costly models with cheap surrogates to improve efficiency. In this article, an adaptive parallel infill strategy is proposed to balance exploration and exploitation over the design space during the optimization process of SBO. Within this method, an inaccurate search strategy is adopted to optimize the surrogate models, thereby helping to locate the exploitation point. An elite archive is exploited to store superior sampling points for batch sampling, while a customized batch size determination strategy is introduced. The proposed SBO method with its adaptive parallel sampling strategy is tested on six unconstrained and five constrained analytical cases with the optimization results compared to state-of-the-art optimization algorithms. The optimization of a 582-bar tower truss system is also performed and utilized to verify the proposed SBO method. The proposed SBO with the adaptive parallel sampling strategy shows excellent performance and better stability.
การเสริมสร้างประสิทธิภาพของระบบควบคุมการเข้าถึงเครือข่ายสำหรับการบันทึกข้อมูล ล็อกที่ถูกต้อง
Creators: name: อรรถพล สุวรรณษา
Publisher: name: มหาวิทยาลัยมหาสารคาม
Year: 2558
Subjects: ระบบควบคุมการเข้าถึงเครือข่าย, ข้อมูลล็อกผิดพลาด, หมายเลขแมคแอดเดรส

description: 3, 34, วารสารวิทยาศาสตร์และเทคโนโลยี มหาวิทยาลัยมหาสารคาม
ความสัมพันธ์ระหว่าง เหล็ก ยีน HFE และโรคทางระบบประสาท
Creators: name: นุชนาถ ไหมหรือ
Publisher: name: มหาวิทยาลัยมหาสารคาม
Year: 2558
Subjects: เหล็ก, ยีนเอ็ซเอฟอี, โรคทางระบบประสาท

description: 3, 34, วารสารวิทยาศาสตร์และเทคโนโลยี มหาวิทยาลัยมหาสารคาม
Hydrodynamics of granular gases of inelastic and rough hard disks or spheres. II. Stability analysis
Creators: name: Megías, Alberto
name: Santos, Andrés
Publisher: name: arXiv
Year: 2021
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Conditions for the stability under linear perturbations around the homogeneous cooling state are studied for dilute granular gases of inelastic and rough hard disks or spheres with constant coefficients of normal ($α$) and tangential ($β$) restitution. After a formally exact linear stability analysis of the Navier--Stokes--Fourier hydrodynamic equations in terms of the translational ($d_t$) and rotational ($d_r$) degrees of freedom, the transport coefficients derived in the companion paper [A. Megías and A. Santos, "Hydrodynamics of granular gases of inelastic and rough hard disks or spheres. I. Transport coefficients," Phys. Rev. E 104, 034901 (2021)] are employed. Known results for hard spheres [V. Garzó, A. Santos, and G. M. Kremer, Phys. Rev. E 97, 052901 (2018)] are recovered by setting $d_t=d_r=3$, while novel results for hard disks ($d_t=2$, $d_r=1$) are obtained. In the latter case, a high-inelasticity peculiar region in the $(α,β)$ parameter space is found, inside which the critical wave number associated with the longitudinal modes diverges. Comparison with event-driven molecular dynamics simulations for dilute systems of hard disks at $α=0.2$ shows that this theoretical region of absolute instability may be an artifact of the extrapolation to high inelasticity of the approximations made in the derivation of the transport coefficients, although it signals a shrinking of the conditions for stability. In the case of moderate inelasticity ($α=0.7$), however, a good agreement between the theoretical predictions and the simulation results is found.
description: 13 pages, 11 figures; v2: Supplemental material (videos) added
Hole-driven MIT theory, Mott transition in VO_2, MoBRiK
Creators: name: Kim, Hyun-Tak
name: Kim, Bong-Jun
name: Lee, Yong Wook
name: Chae, Byung-Gyu
name: Yun, Sun Jin
name: Kang, Kwang-Yong
Publisher: name: arXiv
Year: 2006
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: For inhomogeneous high-T_c superconductors, hole-driven metal-insulator transition (MIT) theory explains that the gradual increase of conductivity with increasing hole doping is due to inhomogeneity with the local Mott system undergoing the first-order MIT and the local non-Mott system. For VO_2, a monoclinic and correlated metal (MCM) phase showing the linear characteristic as evidence of the Mott MIT is newly observed by applying electric field and temperature. The structural phase transition occurs between MCM and Rutile metal phases. Devices using the MIT are named MoBRiK.
description: 2 pages, 1 figures, This was presented in the 8th International Conference on Materials and Mechanisms of Superconductivity and High Temperature Superconductors (M2S-HTSC-VIII) held in Dresden Germany from July 9 to July 14, 2006
Serranus
Creators: name: Peter Wirtz
name: Carlos Eduardo L. Ferreira
name: Sergio R. Floeter
name: Ronald Fricke
name: Joao Luiz Gasparini
name: Tomio Iwamoto
name: Luiz Rocha
name: Claudio L. S. Sampaio
name: Ulrich K. Schliewen
Publisher: name: Zenodo
Year: 2007
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Actinopterygii
Perciformes
Serranidae
Serranus

description: Serranus n. sp.
SMNS 24244 (2 specimens) from Bom Bom islet. UFES 150 (4 specimens) from Lagoa Azul. This undescribed species of the genus Serranus is common on hard and soft bottoms at São Tomé and Príncipe (Figure 8). A photograph by PW of this serranid is given in Debelius (1998: 148). This species is currently being described by P. Heemstra. Because the fin ray counts of this species are similar to those of the Mediterraneaneastern Atlantic species Serranus cabrilla, and because it is very a common species difficult to overlook, we suspect that this is what Osório (1891, 1898) called Serranus cabrilla.
description: Published as part of Peter Wirtz, Carlos Eduardo L. Ferreira, Sergio R. Floeter, Ronald Fricke, Joao Luiz Gasparini, Tomio Iwamoto, Luiz Rocha, Claudio L. S. Sampaio & Ulrich K. Schliewen, 2007, Coastal Fishes of Sao Tome and Principe islands, Gulf of Guinea (Eastern Atlantic Ocean) - an update., pp. 1-48 in Zootaxa 1523 on page 8
Stability of motions near Lagrange points in the Elliptic Restricted Three Body Problem
Creators: name: Ζωγράφος, Παναγιώτης Χάρη
Publisher: name: Aristotle University of Thessaloniki
Year: 2017
Subjects: Κανονικές Περιοχές
Σημεία Lagrange
Ελλειπτικό Περιορισμένο Πρόβλημα τριών Σωμάτων
Regular Regions
Lagrange Points
Elliptic Restricted three-body Problem

description: Η φύση της ευστάθειας των σημείων Lagrange μελετήθηκε στο δισδιάστατο, ελλειπτικό περιορισμένο πρόβλημα των τριών σωμάτων. Οι κανονικές περιοχές κοντά στα σημεία Lagrange L_4 και L_5 υπολογίστηκαν για διαφορετικές τιμές του συντελεστή μάζας μ και της εκκεντρότητας των τροχιών e των κυρίων σωμάτων. Βρέθηκε ότι ο όγκος των ευσταθών περιοχών ελαττώνεται καθώς και το μ και το e αυξάνονται. Υπολογίστηκε το εύρος των κανονικών περιοχών κοντά στο L_4 από 15 εξωηλιακά πλανητικά συστήματα που αποτελούνται από ένα άστρο και έναν παρόμοιο με τον Δία πλανήτη. Δεδομένης μιας αρκετά μεγάλης κανονικής περιοχής, υπάρχει πιθανότητα ύπαρξης συνοδικών σωμάτων ή σωμάτων όμοια με τους Τρωικούς σε σταθερές τροχιές γύρω από τα τριγωνικά σημεία Lagrange. Ένα περιστρεφόμενο-παλλόμενο σύστημα αναφοράς χρησιμοποιήθηκε. Οι εξισώσεις κίνησης και οι αντίστοιχες εξισώσεις μεταβολών ολοκληρώθηκαν αριθμητικά με χρήση της μεθόδου Runge-Kutta 4ης τάξης. Η φύση της ευστάθειας των σημείων Lagrange υπολογίστηκε με χρήση της θεωρίας Floquet. Το εύρος των κανονικών περιοχών θ προσδιορίστηκε με υπολογισμό των γρήγορων δεικτών Lyapunov (FLI) για ένα πλέγμα αρχικών συνθηκών γύρω από τα L_4 και L_5. Για τους σκοπούς αυτής της μελέτης ετοιμάστηκαν αρκετά προγράμματα υπολογιστή σε γλώσσα C και C++
description: The nature of stability of the Lagrange points has been studied in the two-dimensional, elliptic restricted three body problem. The regular regions near the neighborhoods of Lagrange points L_4 and L_5 have been computed for different values of the mass ratio μ and the orbital eccentricity e of the primaries. It has been found that the volume of stability regions decreases as both μ and e increase. The range of the regular regions near L_4 of 15 extrasolar planetary systems, consisting of one star and one Jupiter-like planet, has been calculated. Given a large enough regular region, there exists the possibility of co-orbital companions or Trojan-like objects in stable orbits around the triangular equilibrium points. A system of rotating-pulsating coordinates has been used. The equations of motion and the corresponding variational equations have been integrated numerically using the Runge-Kutta method of the 4th order. The nature of stability of the Lagrange points has been calculated using the Floquet theory. The range of the regular regions θ has been determined by calculation of the Fast Lyapunov Indicators (FLI) for a grid of initial conditions around L_4 and L_5. For the purposes of this study several computer programs have been written using C and C++ programming language
บทบาทของเฟอริตินในมะเร็ง
Creators: name: เบญจพร บุราณรัตน์
Publisher: name: มหาวิทยาลัยมหาสารคาม
Year: 2558
Subjects: เฟอริติน, มะเร็ง, เหล็ก

description: 3, 34, วารสารวิทยาศาสตร์และเทคโนโลยี มหาวิทยาลัยมหาสารคาม
title: Kształtowanie kompetencji kluczowych w społeczeństwie wiedzy
Creators: name: Varkoly, Ladislav
name: Jędrzejczyk, Waldemar
name: Kucęba, Robert
name: Kulej-Dudek, Edyta
Publisher: name: Publishing House of Poznan University of Technology
Year: 2019

description: Zeszyty Naukowe Politechniki Poznańskiej. Organizacja i Zarządzanie, 79, 209-219
Η πλάνη στο Ποινικό Δίκαιο
Creators: name: Μαρτινάκος, Ιωάννης Κωνσταντίνου
Publisher: name: Aristotle University of Thessaloniki
Year: 2017
Subjects: Πλάνη
Ποινικό Δίκαιο
Συγγνωστή πλάνη
Error
Criminal Law
Pardonable error

description: Σκοπός της διπλωματικής αυτής εργασίας αποτέλεσε η συστηματική παρουσίαση και ανάλυση των προβληματικών γύρω από την πλάνη στο Ποινικό Δίκαιο. Για το σκοπό δε αυτό δίνονται παραδείγματα τόσο από το χώρο της θεωρίας όσο και της νομολογίας. Η εργασία χωρίζεται σε τέσσερα μέρη. Στο πρώτο μέρος, αναλύονται η πραγματική πλάνη και ορισμένα ειδικά ζητήματα γύρω από αυτήν, όπως ο γενικός δόλος. Στο δεύτερο μέρος, παρουσιάζονται μορφές νομικά αδιάφορης πλάνης, όπως είναι η πλάνη περί το πρόσωπο, στο τρίτο μέρος, εξετάζεται η νομική πλάνη και στο τέταρτο μέρος, τέλος, αναλύονται δύο ειδικά ζητημάτα πλάνης
description: The aim of the present thesis was to systematically present and analyze the problems of error in Criminal Law. For this purpose, examples are given both in the field of theory and the case law. The thesis is divided into four parts. In the first part, we analyze the error of fact and some specific issues around it, such as the general intent. In the second part, there are forms of legally indifferent mistakes, such as the error in persona, in the third part, the mistake of law is examined, and in the fourth part are analyzed two special issues of error
Simulating wave scattering problems by pseudospectral time-marching on supercomputers
Creators: name: Luo, Yong
Publisher: name: University of British Columbia
Year: 2009

description: In this thesis, a new time-marching scheme for time-dependent PDEs with periodic and non-periodic boundary conditions is introduced and implemented. The new time-marching scheme is based on the polynomial interpolation of the symbolic solution of the original PDEs. The approximation of the space derivatives is performed by pseudospectral methods. The marching of the solution in the time domain is done by the polynomial expansion or the Newton-form polynomial interpolation, depending on the properties of the space derivatives. The boundary conditions are properly represented by a suitable pseudospectral approximation and some technical manipulations of the collocated operators. This technique can efficiently provide balanced spectral accuracy in both the space and time dimensions. The numerical stability and resolution are also improved by the new polynomial time-marching scheme. In the periodic boundary case, the spatial approximation generally can be done by Fourier collocation and the time-marching sometimes can be easily implemented by Chebyshev polynomial series. In the non-periodic case, the spatial operator should be approximated by a Chebyshev collocation, which can include different non-periodic boundary conditions through careful manipulations of the boundary conditions. In this case and the complicated periodic case, the time-marching has to rely on the more general Newton-form interpolation based on Fejér points. Based on the new polynomial time-marching scheme, a two-dimensional, SH-seismic reflection model is simulated by full implementation of the new time-marching scheme with the approximated absorbing boundary conditions. Some scattering phenomena such as diffraction are illustrated through the visualization. The simulation of the physical model is accomplished on two supercomputers: the TMC Connection Machine CM-5 and the Fujitsu VPX240/10. The parallel programming (CM-Fortran on CM-5 and Fortran 77/VP on the VPX240/10) and optimization issues on the two supercomputers are also discussed in this thesis.
อาหารฟังก์ชั่นสำหรับนักกีฬา
Creators: name: ปวีนา จันดาชาติ
Publisher: name: มหาวิทยาลัยมหาสารคาม
Year: 2558
Subjects: อาหารฟังก์ชั่น, ภาวะธำรงดุล, สมรรถภาพ

description: 3, 34, วารสารวิทยาศาสตร์และเทคโนโลยี มหาวิทยาลัยมหาสารคาม
การวิเคราะห์ความแปรปรวนทางเดียวและการเปรียบเทียบพหุคูณในงานวิจัยทางสาธารณสุข กรณีตัวอย่างการป้องกันโรคไข้เลือดออก
Creators: name: จารุวรรณ วิโรจน์
Publisher: name: มหาวิทยาลัยมหาสารคาม
Year: 2558
Subjects: การวิเคราะห์ความแปรปรวนแบบทางเดียว, การเปรียบเทียบพหุคูณ, พฤติกรรมสุขภาพ

description: 3, 34, วารสารวิทยาศาสตร์และเทคโนโลยี มหาวิทยาลัยมหาสารคาม
Physical Underpinnings of Privacy
Creators: name: Renes, Joseph M.
name: Boileau, Jean-Christian
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: One of the remarkable features of quantum mechanics is the ability to ensure secrecy. Private states embody this effect, as they are precisely those multipartite quantum states from which two parties can produce a shared secret that cannot in any circumstance be correlated to an external system. Naturally, these play an important role in quantum key distribution (QKD) and quantum information theory. However, a general distillation method has heretofore been missing. Inspired by Koashi's complementary control scenario (arXiv:0704.3661v1 [quant-ph]), we give a new definition of private states in terms of one party's potential knowledge of two complementary measurements made on the other and use this to construct a general method of private state distillation using quantum error-correcting codes. The procedure achieves the same key rate as recent, more information-theoretic approaches while demonstrating the physical principles underlying privacy of the key. Additionally, the same approach can be used to establish the hashing inequality for entanglement distillation, as well as the direct quantum coding theorem.
description: 12.5 pages
Influence of the Galactic bar on the kinematics of the disc stars with Gaia EDR3 data
Creators: name: Melnik, A. M.
name: Dambis, A. K.
name: Podzolkova, E. N.
name: Berdnikov, L. N.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: A model of the Galaxy with the outer ring R1R2 can explain the observed distribution of the radial, VR, and azimuthal, VT, velocity components along the Galactocentric distance, R, derived from the Gaia EDR3 data. We selected stars from the Gaia EDR3 catalogue with reliable parallaxes, proper motions and line-of-sight velocities lying near the Galactic plane, |z|<200 pc, and in the sector of the Galactocentic angles |theta|<15 degrees and calculated the median velocities VR and VT in small bins along the distance R. The distribution of observed velocities appears to have some specific features: the radial velocity VR demonstrates a smooth fall from +5 km s-1 at the distance of R=R0-1.5 kpc to -3 km s-1 at R=R0+1.0 kpc while the azimuthal velocity VT shows a sharp drop by 7 km s-1 in the distance interval R0
description: 18 pages, 13 figures, accepted for publication in MNRAS