cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
HCGrid: A Convolution-based Gridding Framework for RadioAstronomy in Hybrid Computing Environments
Creators: name: Wang, Hao
name: Yu, Ce
name: Zhang, Bo
name: Xiao, Jian
name: Luo, Qi
Publisher: name: arXiv
Year: 2020
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Gridding operation, which is to map non-uniform data samples onto a uniformly distributedgrid, is one of the key steps in radio astronomical data reduction process. One of the mainbottlenecks of gridding is the poor computing performance, and a typical solution for suchperformance issue is the implementation of multi-core CPU platforms. Although such amethod could usually achieve good results, in many cases, the performance of gridding is stillrestricted to an extent due to the limitations of CPU, since the main workload of gridding isa combination of a large number of single instruction, multi-data-stream operations, which ismore suitable for GPU, rather than CPU implementations. To meet the challenge of massivedata gridding for the modern large single-dish radio telescopes, e.g., the Five-hundred-meterAperture Spherical radio Telescope (FAST), inspired by existing multi-core CPU griddingalgorithms such as Cygrid, here we present an easy-to-install, high-performance, and open-source convolutional gridding framework, HCGrid,in CPU-GPU heterogeneous platforms. Itoptimises data search by employing multi-threading on CPU, and accelerates the convolutionprocess by utilising massive parallelisation of GPU. In order to make HCGrid a more adaptivesolution, we also propose the strategies of thread organisation and coarsening, as well as optimalparameter settings under various GPU architectures. A thorough analysis of computing timeand performance gain with several GPU parallel optimisation strategies show that it can leadto excellent performance in hybrid computing environments.
description: This is a pre-copyedited, author-produced PDF of an article accepted for publication in Monthly Notices of the Royal Astronomical Society, 11 pages, 13 figures
Moral Framing and Ideological Bias of News
Creators: name: Mokhberian, Negar
name: Abeliuk, Andrés
name: Cummings, Patrick
name: Lerman, Kristina
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computers and Society (cs.CY)
subject: FOS: Computer and information sciences

description: News outlets are a primary source for many people to learn what is going on in the world. However, outlets with different political slants, when talking about the same news story, usually emphasize various aspects and choose their language framing differently. This framing implicitly shows their biases and also affects the reader's opinion and understanding. Therefore, understanding the framing in the news stories is fundamental for realizing what kind of view the writer is conveying with each news story. In this paper, we describe methods for characterizing moral frames in the news. We capture the frames based on the Moral Foundation Theory. This theory is a psychological concept which explains how every kind of morality and opinion can be summarized and presented with five main dimensions. We propose an unsupervised method that extracts the framing Bias and the framing Intensity without any external framing annotations provided. We validate the performance on an annotated twitter dataset and then use it to quantify the framing bias and partisanship of news.
Energy scales in 4f1 delafossite magnets: crystal-field splittings larger than the strength of spin-orbit coupling in KCeO2
Creators: name: Eldeeb, M. S.
name: Petersen, T.
name: Hozoi, L.
name: Yushankhai, V.
name: Rossler, U. K.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Ytterbium-based delafossites with effective S=1/2 moments are investigated intensively as candidates for quantum spin-liquid ground states. While the synthesis of related cerium compounds has also been reported,many important details concerning their crystal, electronic, and magnetic structures are unclear. Here we analyze the S=1/2 system KCeO2, combining complementary theoretical methods. The lattice geometry was optimized and the band structure investigated using density functional theory extended to the level of a GGA+U calculation in order to reproduce the correct insulating behavior. The Ce 4f1 states were then analyzed in more detail with the help of ab initio wave-function-based computations. Unusually large effective crystal-field splittings of up to 320 meV are predicted, which puts KCeO2 in the strong field coupling regime. Our results reveal a subtle interplay between ligand-cage electrostatics and the trigonal field generated by the extended crystalline surroundings, relevant in the context of recent studies on tuning the nature of the ground-state wave function in 4f triangular-lattice and pyrochlore compounds. It also makes KCeO2 an interesting model system in relation to the effect of large crystal-field splittings on the anisotropy of intersite exchange in spin-orbit coupled quantum magnets.
description: 6 pages, 2 figures, and 3 tables
Influence of fly ash fineness on water requirement and shrinkage of blended cement mortars
Creators: name: Vanissorn Vimonsatit
name: Prinya Chindaprasirt
name: Seksun Ruangsiriyakul
name: Vanchai Sata
Publisher: name: Faculty of Engineering, Khon Kaen University
Year: 2015
Subjects: Fineness,Fly ash,Drying shrinkage,Autogenous shrinkage,Mortar

description: 4, 42, KKU Engineering Journal
Multiwavelength analysis and the difference in the behavior of the spectral features during the 2010 and 2014 flaring periods of the blazar 3C 454.3
Creators: name: Amaya-Almazán, Raúl Antonio
name: Chavushyan, Vahram
name: Patiño-Álvarez, Victor Manuel
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The flat-spectrum radio quasar 3C~454.3 throughout the years has presented very high activity phases (flares) in which the different wavebands increase their flux dramatically. In this work, we perform multiwavelength analysis from radio to gamma-rays and study the Mg~II~$λ2798$Å emission line and the UV~Fe~II band from 2008-2018. We found that an increase in the 43 GHz flux density of the quasi-stationary component C, coincides with the estimated time at which a superluminal blob ejected from the radio core (which caused the brightest flare of 2010) collides with the quasi-stationary component (at a projected distance of $\sim4.6$ pc from the radio core). The spectral index different behavior in the first ($5000 < \text{JD}-2450000 < 5600$) and second ($6600 < \text{JD}-2450000 < 7900$) flaring periods suggest changes in the physical conditions. The complex nature of the second period can be a result of a superposition of multiple events at different locations. The Mg~II has an anti-correlation with the UV-continuum while Fe~II correlates positively. Except by the time of the brightest flare of 2010, when both have a strong response at high continuum luminosities. Our results suggest that the dominant gamma-ray emission mechanism for the first flaring period is External Compton. For the second flaring period the seed photons emission region is co-spatial with the gamma-ray emission region. However, a SED study using a multizone jet emission model is required to confirm the nature of each significant flare during the second period.
description: 23 pages, 10 figures, 3 tables, accepted for publication in ApJ
Stochastic kinetics of viral capsid assembly based on detailed protein structures
Creators: name: Hemberg, Martin
name: Yaliraki, Sophia N.
name: Barahona, Mauricio
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantitative Methods (q-bio.QM)
subject: Biomolecules (q-bio.BM)
subject: FOS: Biological sciences

description: We present a generic computational framework for the simulation of viral capsid assembly which is quantitative and specific. Starting from PDB files containing atomic coordinates, the algorithm builds a coarse grained description of protein oligomers based on graph rigidity. These reduced protein descriptions are used in an extended Gillespie algorithm to investigate the stochastic kinetics of the assembly process. The association rates are obtained from a diffusive Smoluchowski equation for rapid coagulation, modified to account for water shielding and protein structure. The dissociation rates are derived by interpreting the splitting of oligomers as a process of graph partitioning akin to the escape from a multidimensional well. This modular framework is quantitative yet computationally tractable, with a small number of physically motivated parameters. The methodology is illustrated using two different viruses which are shown to follow quantitatively different assembly pathways. We also show how in this model the quasi-stationary kinetics of assembly can be described as a Markovian cascading process in which only a few intermediates and a small proportion of pathways are present. The observed pathways and intermediates can be related a posteriori to structural and energetic properties of the capsid oligomers.
Enhancement of maximum superconducting temperature by applying pressure and reducing the charge transfer gap
Creators: name: Liu, Yi-Hsuan
name: Wu, Huan-Kuang
name: Lee, Ting-Kuo
Publisher: name: arXiv
Year: 2020
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Recent Scanning Tunneling Spectra(STS) measurement on underdoped cuprate discovers the increase of the maximum superconducting transition temperature $T_c$ when the size of charge transfer gap (CTG) is reduced. Applying pressure is another well known method to increase maximum $T_c$. However, these pressure experiments also found another puzzle that $T_c$ is enhanced in underdoped and optimal doped samples but suppressed in overdoped. Here we present a possible mechanism based on the charge fluctuation to explain both these two effects simultaneously. Starting from 3-band Hubbard model, we retrieve the charge fluctuation(CF) between oxygen 2$p^6$ band and copper 3$d^{10}$ band which is ignored in the $t-J$ model. This model is studied via variational Monte Carlo method(VMC).
A study of the long term evolution of quasi periodic oscillations in the accretion powered X-ray pulsar 4U 1626-67
Creators: name: Kaur, Ramanpreet
name: Paul, Biswajit
name: Kumar, Brijesh
name: Sagar, Ram
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report here a study of the long term properties of Quasi Periodic Oscillations (QPO) in an unusual accreting X-ray pulsar, 4U 1626--67. This is a unique accretion powered X-ray pulsar in which we have found the QPOs to be present during all sufficiently long X-ray observations with a wide range of X-ray observatories. In the present spin-down era of this source, the QPO central frequency is found to be decreasing. In the earlier spin-up era of this source, there are only two reports of QPO detections, in 1983 with EXOSAT and 1988 with GINGA with an increasing trend. The QPO frequency evolution in 4U 1626--67 during the last 22 years changed from a positive to a negative trend, somewhat coincident with the torque reversal in this source. In the accretion powered X-ray pulsars, the QPO frequency is directly related to the inner radius of the accretion disk, as per Keplerian Frequency Model (KFM) and Beat Frequency Model (BFM). A gradual depletion of accretion disk is reported earlier from the X-ray spectral, flux and pulse profile measurements. The present QPO frequency evolution study shows that X-ray flux and mass accretion rate may not change by the same factor, hence the simple KFM and BFM are not able to explain the QPO evolution in this source. This is the only X-ray pulsar to show persistent QPOs and is also the first accreting X-ray pulsar in which the QPO history is reported for a long time scale relating it with the long term evolution of the accretion disk.
description: 14 pages, 3 figures. Accepted for publication in ApJ
Plasmon induced transparency in an air-dielectric grooved parallel plate terahertz waveguide
Creators: name: Dhriti, KM
name: Islam, Maidul
name: Bhattacharya, Angana
name: Ahmad, Amir
name: Kumar, Gagan
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optics (physics.optics)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: In this article, we examine plasmon induced transparency (PIT) effect in a parallel plate waveguide (PPWG) comprising of two similar pyramidal shaped grooves. One of the grooves is filled with air, while the other is filled with a dielectric material whose refractive index can be varied. The resonant frequencies corresponding to the air and dielectric grooves in the proposed configuration results in the transparency window which can be modulated with the refractive index of the dielectric material. The approach provides flexibility to actively control transparency effect in a waveguide configuration without changing physical dimensions. We examined field profiles in the transparency region to clearly depict the PIT effect. We have employed an analytical model based upon the three-level plasmonic model to validate our numerical findings. Further, we examined the switching and tunability of transparency effect by including silicon layers between the grooves whose conductivity can be varied. Actively tunable response in plasmon induced transparency effect in terahertz waveguides can be significant in the construction of terahertz active components.
description: 16 pages, 5 figures
Finger Vein Recognition System Using CNN
Creators: name: Geeta Shivani
name: Dr.Ashok Kumar A. R
Publisher: name: Zenodo
Year: 2024

description: As a new biometric technology, finger vein recognition hasreceived much attention in recent years. Since deep learning is anend-to-end system and has achieved very good results in such fieldsas face recognition and target detection, we try to apply it to fingervein recognition. The other forms of biometrics few demerits likethey can be duplicated or forged as they leave behind some trace.But this doesn’t happen in case of finger vein because they arepresent inside the finger. So this is gaining popularity among thebiometric authentication. Medical research shows: (1) Finger veinsfor different people are not the same (2) For the same person,his/her finger veins vary among different fingers (3) For adults,patterns of finger veins will not change over time. Hence, the fingervein offers a safe and feasible approach for biometric recognition.In this project, five layers of CNN are adopted which include 3convolution layers and 2 fully connected layers. This networkobtains a recognition rate of 99.53%, which proves to be betterperforming than the traditional algorithm.With the increase in thenumber of layers, the accuracy increases.The fv-usm model is uedfor this. Along with the CNN sequential model, the VGG16 model isused. The initial layers of tfhe model are trained.
Πρακτική εφαρμογή Δημοτικού Κτηματολογίου στον Δήμο Θεσσαλονίκη
Creators: name: Μισιρλόγλου, Συμεών Αλέξανδρου
Publisher: name: Aristotle University of Thessaloniki
Year: 2006
Subjects: Δημοτικό Κτηματολόγιο
Δήμος Θεσσαλονίκης
Γεωγραφικό σύστημα πληροφοριών
Municipal Cadastre
Municipality of Thessaloniki
Geographical Information System (GIS)

description: Το αντικείμενο της παρούσας μεταπτυχιακής διατριβής, όπως παρουσιάζεται στον τίτλο είναι η ανάλυση, ο πλήρης σχεδιασμός, η ανάπτυξη και η εφαρμογή όλων εκείνων των εργαλείων και συστημάτων που πρέπει να χρησιμοποιηθούν ώστε να δημιουργηθεί μια Βάση Δεδομένων και να ανπτυχθεί ένα Γεωγραφικό Σύστημα Πληροφοριών, που σαν σκοπό θα έχει την καταγραφή της ακίνητης περιουσίας του Δήμου Θεσσαλονίκης. Η ανάγκη για την καταγραφή της περιουσίας του Δήμου ενισχύεται περισσότερο και από την υποχρέωση της δήλωσής της στο Εθνικό Κτηματολόγιο καθω΄ς και την οικονομική της αποτίμηση για την εφαργμογή του Διπλογραφικού Συστήματος, σύμφωνα με το ΠΔ 315/1999
description: The main objectives of this work are : to create a Database Management System with the aim of the Unified Modelling Language (UML), to approach a model of the spatial data of the Municipal Cadastre, to indicate that developing of Municipal Cadastre is a factor of vital importance in the extertion of documenting land property, to declare the significance of the collection of the information concerning the registered Municipal properties, the creation of GIS based software, finally to give some results of this work with general conclusion on the use of the Municipal Cadastre
Μελέτη της έκφρασης των παραγόντων FoxPe, CTLA4 και GITR σε υποπληθυσμούς CDu(+), CD25(-) και CDu(+) και CD25(+) των Τ-λεμφοκυττάρων στο περιφερικό αίμα ασθενών με πολλαπλή σκλήρυνση κατά τη διάρκεια των υποτροπών, πριν και μετά τη χορήγηση κορτικοστεροειδών
Creators: name: Πασπαλτσής, Ιωάννης Αθανασίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2006
Subjects: Πολλαπλή σκλήρυνση
FOXP3
GTLA-4
GITR
Multiple sclerosis

description: Η πολλαπλή σκλήρυνση θεωρείται μια αυτοάνοση νόσος πολλαπλής αιτιολογίας. Σε ότι αφορά στο ανοσοποιητικό σύστημα, ο σημαντικός ρόλος των Τ-λεμφοκυττάρων θεωρείται δεδομένος. Στις μέρες μας είναι γνωστές ότι αυτοδραστικά Τ-λεμφοκύτταρα απαντώνται τόσο στο κυκλοφορικό αίμα ασθενών όσο και σε αυτό υγιών ατόμων. Στους τελευταίους η δράση των φυσικά εμφανιζόμενων ρυθμιστικών κυττάρων CDu(+), CD25(+) έχει αποδειχτεί ότι συμβάλλει στην αποτροπή εμφάνισης αυτοάνοσων ασθενειών. Βιβλιογραφικά δεδομένα αποδίδουν σημαντικό ρόλο για τη λειτουργία των φυσικά εμφανιζόμενων ρυθμιστικών κυττάρων στους παράγοντες FOX3, CTLA-4 και GITR. Στην εργασία που ακολουθεί μελετήθηκαν τα επίπεδα έκφρασης των παραπάνω παραγόντων σε CDu(+), CD25(-) και CDu(+), CD25(+) Τ-λεμφοκύτταρα ασθενών με ΠΣ σε τέσσερις διαφορετικές χρονικές καταστάσεις. Οι δύο από αυτές αφορούν την περίοδο που ο ασθενής βρίσκεται σε ύφεση και την ημέρα κατά την οποία εισέρχεται στο νοσοκομείο με υποτροπή. Οι άλλες δύο αφορούν κύριες χρονικές στιγμές κατά τη θεραπεία με κορτικοστεροειδή η οποία αποτελεί τη συνήθη θεραπευτική αγωγή κατά τη διάρκεια της υποτροπής
description: Decreased Treg activity has been recently reported in patients with multiple sclerosis. The proteins FOXP3, CTLA-4 and GITR are characteristic for the CDu(+), CD25(+) phenotype of the Treg cells and are associated with their regulatory function. Here, we studied the expression levels of FOXP3, CTLA-4 and GITR in CDu(+), CD25(+) and CDu(+), CD25(-) T-cells from INF-b treated relapsing-rewitting MS patients before and after the corticosteroid course following a relapse. The study provides information about the expression levels of the named genes at the relapse and may offer new insights into the therapeutic mode of corticosteroids related to the expression levels of these proteins
Giant spin transfer torque in atomically thin magnetic bilayers
Creators: name: Cao, Weihao
name: Tu, Matisse Wei-Yuan
name: Xiao, Jiang
name: Yao, Wang
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: In cavity quantum electrodynamics, the multiple reflections of a photon between two mirrors defining a cavity is exploited to enhance the light-coupling of an intra-cavity atom. We show that this paradigm for enhancing the interaction of a flying particle with a localized object can be generalized to spintronics based on van der Waals 2D magnets. Upon tunneling through a magnetic bilayer, we find the spin transfer torques per electron incidence can become orders of magnitude larger than $\hbar/2$, made possible by electron's multi-reflection path through the ferromagnetic monolayers as an intermediate of their angular momentum transfer. Over a broad energy range around the tunneling resonances, the damping-like spin transfer torque per electron tunneling features a universal value of $\frac{\hbar}{2} \tan{\fracθ{2}}$, depending only on the angle $θ$ between the magnetizations. These findings expand the scope of magnetization manipulations for high-performance and high-density storage based on van der Waals magnets.
description: Published as an Express Letter on Chinese Physics Letters
Η νομιμοποίηση για την άσκηση ενδίκων μέσων στις υποκειμενικά σύνθετες δίκες
Creators: name: Βεζυρτζή, Αναστασία Νικολάου
Publisher: name: Aristotle University of Thessaloniki
Year: 2006
Subjects: Ενδικα μέσα
Νομιμοποίηση
Ομοδικία
Κύρια παρέμβαση
Πρόσθετη παρέμβαση
Προσεπίκληση
Legal remedies
Joinder of parties
Principal intervention
Third party intervention
Interpleading

description: Στις υποκειμενικά σύνθετες δίκες μόνο οι κύριοι διάδικοι νομιμοποιούνται ενεργητικά και παθητικά στην άσκηση ενδίκων μέσων και πιο συγκεκριμένα ο απλός και αναγκαίος ομόδικος, καθώς και ο κυρίως παρεμβαίνων σε σχέση μόνο προς τη δίκη επί της κυρίας παρεμβάσεώς του. Αντίθετα, στην πρόσθετη παρέμβαση, τόσο ο απλώς όσο και ο αυτοτελώς προσθέτως παρεμβαίνων δεν καθίστανται κύριοι-επιγενόμενοι διάδικοι με αποτέλεσμα να μην μπορούν να ασκήσουν ένδικα μέσα αυτοτελώς, αλλά μόνον προς το συμφέρον του υπερ ου. Στην προσεπίκληση αναγκαίνω ομοδίκων και στην προσεπίκληση αληθούς κυρίου ή νομέα διευρύνονται τα υποκειμενικά όρια της δίκης και τα προσεπικαλούμενα πρόσωπα καθίστανται κύριοι-επιγενόμενοι διάδικοι με μόνη την παραδεκτή άσκηση της προσεπίκλησης και ανεξαρτήτως της άσκησης παρεμβάσεως, ενώ στη δίκη των ενδίκων μέσων εφαρμόζονται οι διατάξεις της αναγκαίας ομοδικίας. Διαφορετική είναι η ρύθμιση ως προς την προσεπίκληση του δικονομικού εγγυητή, όπου εξελίσσονται παράλληλα δύο έννομες σχέσεις, αυτή της κύριας δίκης και αυτή της δίκης της προσεπίκλησης, ενώ για να καταστεί ο δικονομικός εγγυητής διάδικος αναφορικά με την κύρια δίκη θα πρέπει να ασκήσει απλή πρόσθετη παρέμβαση. Τέλος, ο προς ον η ανακοίνωση τρίτος, εφόσον παρέμβει μπορεί να ασκήσει ένδικα μέσα αποκλειστικά προς το συμφέρον του υπερ ου και όχι αυτοτελώς
description: In civil trials with many plaintiffs or defendants legal remedies can lodged only from (or against) litigant parties. This prerequisite is fulfilled in cases of joinder of parties (compulsory or not) and of principal intervention. In contrary in cases of third party intervention in support to motion or independant third party intervention, the intervening parties remain third parties and as a result they lodge legal remedies only in favor of one litigant party. The intervening party becomes a litigant party only in cases of interpleading finally, in cases of third party notice, the third party has the right to lodge legal remedies in order to support the claims of one litigant party, only if permission to intervene is granted
Decay of Z Boson into Photon and Unparticle
Creators: name: Cheung, Kingman
name: Kephart, Thomas W.
name: Keung, Wai-Yee
name: Yuan, Tzu-Chiang
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the decay of the standard model Z boson into unparticle plus a single photon through a one-loop process. As in the anomaly type decay, only the axial-vector part of the Z coupling matching with the vector unparticle and/or the vector part of the Z coupling matching with the axial-vector unparticle can give a nonzero contribution to the decay. We show that the photon spectrum terminates at the end point in accord with Yang's theorem. Existing data on single photon production at LEP I is used to constrain the unparticle sector.
description: 12 pages, 2 figures plus 1 table
Literature profiling workshop: HBKU intro presentation (S File 5)
Creators: name: Chaussabel, Damien
Publisher: name: figshare
Year: 2021
Subjects: subject: 60102 Bioinformatics
subject: FOS: Computer and information sciences

description: A presentation in the MS PowerPoint format that was used for the introductory session during the workshop “Organizing gene literature retrieval, profiling, and visualization” held at Hamad Bin Khalifa University (Use case).
New mass-loss rates of B supergiants from global wind models
Creators: name: Krticka, Jiri
name: Kubat, Jiri
name: Krtickova, Iva
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Massive stars lose a significant fraction of mass during their evolution. However, the corresponding mass-loss rates are rather uncertain. To improve this, we calculated global line-driven wind models for Galactic B supergiants. Our models predict radial wind structure directly from basic stellar parameters. The hydrodynamic structure of the flow is consistently determined from the photosphere in nearly hydrostatic equilibrium to supersonically expanding wind. The radiative force is derived from the solution of the radiative transfer equation in the comoving frame. We provide a simple formula that predicts theoretical mass-loss rates as a function of stellar luminosity and effective temperature. The mass-loss rate of B supergiants slightly decreases with temperature down to about 22.5 kK, where the region of recombination of Fe IV to Fe III starts to appear. In this region, which is about 5 kK wide, the mass-loss rate gradually increases by a factor of about 6. The increase of the mass-loss rate is associated with a gradual decrease of terminal velocities by a factor of about 2. We compared the predicted wind parameters with observations. While the observed wind terminal velocities are reasonably reproduced by the models, the situation with mass-loss rates is less clear. The mass-loss rates derived from observations that are uncorrected for clumping are by a factor of 3 to 9 higher than our predictions on cool and hot sides of the studied sample, respectively. These observations can be reconciled with theory assuming a temperature-dependent clumping factor. On the other hand, the mass-loss rate estimates that are not sensitive to clumping agree with our predictions much better. Our predictions are by a factor of about 10 lower than the values currently used in evolutionary models appealing for reconsideration of the role of winds in the stellar evolution.
description: 13 pages, accepted for publication in Astronomy & Astrophysics, ver. 2 (inclusion of more precise values in Table 3)
The Operational Efficiencies of the Hotel and Guesthouse Business in Thailand
Creators: name: Akarapong Untong, Phanin Khureathai
Publisher: name: Center for Applied Economics Research (CAER), Faculty of Economics, Kasetsart University
Year: 2011
Subjects: hotel, guesthouse, operational efficiency, stochastic meta-frontier

description: 18, 1, Applied Economics Journal
Experimental and numerical methods for investigating copolymer sequence
Creators: name: Kuehster, Louise
name: 0000-0002-0730-204X
Publisher: name: The University of Texas at Austin
Year: 2023
Subjects: Copolymerization
Kinetics
Stochastic
Modeling
Sequence

description: Poly(lactide-co-glycolide) (PLGA) is a copolymer which has great pharmaceutical relevance, particularly as an excipient in long-acting fomulations. It has been used in several FDA approved long-acting products and is in fact the most common degradable excipient for such products due to its biodegradability, biocompatibility, and tunability. Commercial PLGA is synthesized using tin(II) 2-ethylhexanoate (Sn(Oct)₂) catalyzed ring-opening polymerization from cyclic dimers lactide and glycolide. Degradation and drug release profiles can be intentionally tuned using several polymer properties including molecular weight, L:G repeat unit composition, and end groups. Still, some uncontrolled variability in PLGA properties has been observed, and contributes to regulatory difficulties for PLGA based products. PLGA repeat unit sequencing has been proposed as one factor which may affect degradation and drug release properties. PLGA sequence is largely uncontrolled throughout the polymerization and characterization of sequence has proven difficult. The methods typically employed by polymer chemists for determining reactivity ratios and relating them to sequence have failed for PLGA due to the depolymerization and transesterification reactions that are also catalyzed by Sn(Oct)₂ during PLGA synthesis. New numerical models were developed for the determination of accurate kinetic parameters for PLGA copolymerization, first by treating it as only partially reversible. A stochastic regression method was also developed, enabling treatment of the system which included full reversibility and random transesterification. The experimental characterization of PLGA sequence was also investigated, and the G methylene resonance in the ¹³C NMR spectra was identified as a promising candidate for characterizing PLGA sequence. This resonance was fit to several Lorentzians which were each assigned to compositional tetrads using a stochastic simulation of the copolymerization. Compositional tetrad fractions provide the basis for more detailed characterization of PLGA sequence than was previously possible.
Modified KdV hierarchy : Lax pair representation and bi-Hamiltonian structure
Creators: name: Choudhuri, Amitava
name: Talukdar, B.
name: Das, U.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: We consider equations in the modified KdV (mKdV) hierarchy and make use of the Miura transformation to construct expressions for their Lax pair. We derive a Lagrangian-based approach to study the bi-Hamiltonian structure of the mKdV equations. We also show that the complex modified KdV (cmKdV) equation follows from the action principle to have a Lagrangian representation. This representation not only provides a basis to write the cmKdV equation in the canonical form endowed with an appropriate Poisson structure but also help us construct a semianalytical solution of it. The solution obtained by us may serve as a useful guide for purely numerical routines which are currently being used to solve the cmKdV eqution.
description: 8 pages, 2 figures
Large-N expansion for unitary superfluid Fermi gases
Creators: name: Veillette, M. Y.
name: Sheehy, D. E.
name: Radzihovsky, L.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We analyze strongly interacting Fermi gases in the unitary regime by considering the generalization to an arbitrary number N of spin-1/2 fermion flavors with Sp(2N) symmetry. For N=\infty this problem is exactly solved by the BCS-BEC mean-field theory, with corrections small in the parameter 1/N. The large-N expansion provides a systematic way to determine corrections to mean-field predictions, allowing the calculation of a variety of thermodynamic quantities at (and in the proximity to) unitarity, including the energy, the pairing gap, and upper-critical polarization (in the case of a polarized gas) for the normal to superfluid instability. For the physical case of N=1, among other quantities, we predict in the unitarity regime, the energy of the gas to be ξ=0.28 times that for the non-interacting gas and the pairing gap to be 0.52 times the Fermi energy.
description: 13 pages
Surface science model studies for heterogeneous catalysis
Creators: name: Floto, Michael E.
name: 0000-0002-8806-4273
Publisher: name: The University of Texas at Austin
Year: 2023
Subjects: Surface science
Model study
Heterogeneous catalysis

description: In this thesis, I will discuss some surface science studies aimed at revealing fundamental information about heterogeneous catalysis. The use of model surfaces under ultra-high vacuum conditions allows for powerful surface science techniques that can disclose detailed information about energy relevant reactions on solid catalyst surfaces. The catalytic processes that motivate this work include the Fischer-Tropsch Synthesis reaction, water gas shift reaction, and steam reforming of small alkanes. Additionally, fundamental understanding of how reactions proceed and affect a metal surface are of much interest for this work. There is experimental evidence that shows the effect adsorbed hydrogen can have on the CO dissociation step on cobalt-based catalysts. This reaction step and surface play a significant role in effectively converting CO(g) and H₂(g) into fuels and chemical feedstocks through FTS. Additionally, we investigate the effect subsurface hydrogen species can have on the surface structure of a polycrystalline cobalt surface. These experiments are achieved by use of a high flux excited hydrogen doser and scanning tunneling microscopy. Subsurface hydrogen and the effect it can have on the structure of a metal has significant implications for catalysis as well as energy storage. The last study of this thesis will show experimental results that indicate water and ethane interact on a metallic manganese surface in a way that results in evolution of H₂(g) and CO (g). This study reveals mechanistic details of this reaction by use of temperature programmed desorption experiments with isotopically labeled species. The results of the studies in this thesis contribute fundamental information about important heterogeneous catalytic processes.
un0rick : open-source fpga board for single element ultrasound imaging
Creators: name: Jonveaux, Luc
Publisher: name: Zenodo
Year: 2019
Subjects: opensource
ultrasound
fpga
lattice
ice40

description: Non destructive testing and imaging ultrasound have been around since the ’50s. Many ultrasound open-source projects are emerging, mostly focusing on image processing - while hardware has been left behind. Several teams have produced successful designs to be used on commercial US scanners, but they are not cheap, and are difficult to access. I couldn’t find designs to play with, that would be affordable or open, so I decided to make one for makers, researchers and hackers. The PDF here is also a ZIP that contains the sources to the hardware and some data too, don’t hesitate to have a look. Just rename the file from .PDF to .ZIP and you’re ready to go .
description: {"references": ["Luc Jonveaux 2017. Arduino-like development kit for single-element ultrasound imaging. InJournal of Open Hardware,1(1), p.3. DOI: 10.5334/joh.2", "Clifford Wolf, Johann Glaser. Yosys - A Free Verilog Synthesis Suite. Website at http://www.clifford.at/yosys/"]}
Coexistence of active Brownian discs: Van der Waals theory and analytical results
Creators: name: Speck, Thomas
Publisher: name: arXiv
Year: 2020
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: At thermal equilibrium, intensive quantities like temperature and pressure have to be uniform throughout the system, restricting inhomogeneous systems composed of different phases. The paradigmatic example is the coexistence of vapor and liquid, a state that can also be observed for active Brownian particles steadily driven away from equilibrium. Recently, a strategy has been proposed that allows to predict phase equilibria of active particles [Phys. Rev. E \textbf{97}, 020602(R)(2018)]. Here we elaborate on this strategy and formulate it in the framework of a van der Waals theory for active discs. For a given equation of state, we derive the effective free energy analytically and show that it yields coexisting densities in very good agreement with numerical results. We discuss the interfacial tension and the relation to Cahn-Hilliard models.
แผนที่การกระจายตัวของภาวะหมอกควัน PM2.5 ในพื้นที่เมืองเชียงใหม่
Creators: name: วาทยุทธ การะเกตุ
Publisher: name: สถาบันวิจัยและพัฒนา มหาวิทยาลัยกาฬสินธุ์
Year: 2024
Subjects: เมืองเชียงใหม่
ดัชนีคุณภาพอากาศ
ฤดูกาลหมอกควัน

description: วารสารวิทยาศาสตร์ เทคโนโลยี และนวัตกรรม มหาวิทยาลัยกาฬสินธุ์, 3, 1, 1-15
Μελέτη και μαθηματική περιγραφή της ανάπτυξης/επιβίωσης της Listeria monocytogenes σε μίγμα παγωτού σε στατικές και δυναμικές συνθήκες ψύξης-κατάψυξης
Creators: name: Γουγουλή, Μαρία Δημητρίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2007
Subjects: Listeria monocytogenes
Quantitative microbiology
Mathematic models
Ice cream
Ποσοτική μικροβιολογία
Μαθηματικά μοντέλα
Παγωτό

description: Αντικείμενο της παρούσας εργασίας είναι η μελέτη της κινητικής συμπεριφοράς της Listeria monocytogenes εμβολιασμένη σε μίγμα παγωτού κάτω από συνθήκες ψύξης και κατάψυξης, η ανάπτυξη ενός μαθηματικού μοντέλου για την επίδραση της θερμοκρασίας στη συμπεριφορά της LM σε παγωτό, η αξιολόγηση της ικανότητας του αναπτυγμένου μοντέλου να προβλέπει τη συμπεριφορά του παθογόνου κάτω από συνθήκες ψύξης (στατικές ή δυναμικές) οι οποίες μπορούν να εφαρμοστούν κατά το στάδιο της ωρίμανσης και κάτω από συνθήκες ψύξης/κατάψυξης οι οποίες μπορούν να επισυμβούν κατά τη μεταφορά και αποθήκευση του παγωτού και η μελέτη της μικροβιολογικής αλλοίωσης του παγωτού κάτω από συνθήκες ψύξης (στάδιο ωρίμανσης)
description: The objectives of the present study are to study the kinetic behavrio of inoculated Listeria monocytogenes in ice cream mix stored under chilling and freezing conditions, to develop a product targeted, mathematical model for the effect of temperature on LM behavior in ice cream, to evaluate the ability of the developed model to predict the behavior of the pathogen under chilling (static or dynamic) conditions implemented during the ageing stage and chilling/freezing conditions that may occur during transportation and storage of ice cream and to study on the microbiological spoilage of cream (ageing stage)
Does Cosmological Term Influence Gravitational Lensing?
Creators: name: Khriplovich, I. B.
name: Pomeransky, A. A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We analyze the bending of light by galaxies or clusters of galaxies in the presence of the cosmological term. Going over to the Friedmann-Robertson-Walker coordinates, used in fact for the description of actual observations, we demonstrate that the cosmological constant does not influence practically the lensing effect.
description: 5 pages, 1 figure
High temperature deformation and failure in aluminum-alumina particulate metal matrix composites
Creators: name: Ganguly, Partha
Publisher: name: University of British Columbia
Year: 2009

description: This work was primarily concerned with investigating the role of the reinforcing particles on plastic flow and fracture of metal matrix composites (MMCs) in the high temperature, moderately high strain rate domain. Uniaxial tensile, uniaxial compressive, and collar compressive tests were conducted on as-cast and extruded MMCs (the uniaxial tests were also conducted on unreinforced AA6061), and the flow and fracture behavior of the materials examined. The micro-failure characteristics were ascertained through metallographic examination of the fractured samples - both perpendicular and parallel to the fracture surface, and through numerical simulations of the collar compression test on the as-cast MMC . The reinforcing particles were found to enhance the flow stress and lower the failure strain in these materials. The detrimental effect of the particles on failure strain was higher for the as-cast M M C - and this was deemed to be due to the presence of particle rich clusters in its microstructure. In both the extruded and as-cast MMCs, particle cracking and interfacial decohesion were the primary void nucleation mechanisms. The dominance of one mechanism over another was found to be temperature dependent - the former dominating at lower and the latter at higher temperatures. The MMC ductility peaked in the mid-temperature region, where the occurrence of the two mechanisms was comparable.
Η νομική φύση και λειτουργία του δικαιώματος απάντησης, στα πλαίσια των άρθρων 14 και 15
Creators: name: Θεοδωρίδου, Μαρία Κωνσταντίνου
Publisher: name: Aristotle University of Thessaloniki
Year: 2006
Subjects: Δικαίωμα απάντησης
Δημόσια επικοινωνία
Πρόσβαση στα ΜΜΕ
Βλάβη στην προσωπικότητα
Ανακριβής εκπομπή η δμοσίευμα
Επανόρθωση
Right to reply
Public communication
Access to the media
Damage on personality
Untrue broadcasting or publishing
Rectification

description: Το δικαίωμα απάντησης αντιμετωπίζεται ως δικαίωμα προστασίας της προσωπικότητας αφενός, αφετέρου ως διαδικαστικό δικαίωμα παροχής πρόσβασης στον πολίτη, ο οποίος επεμβαίνει στη σφαίρα της δημόσιας επικοινωνίας, για να ανασκευάσει το ανακριβές δημοσίευμα ή εκπομπή, καθιστάμενος κι αυτός φορέας κατ' αποτέλεσμα της δημόσιας επικοινωνίας
description: The right to reply is considered as a right to protect one's personality, on one hand on the other hand as a procedural right that enables the access to any person, who intervenes in the public sphere of the communication in order to oppose his opinion to the untrue broadcasting or publishing, becoming in this way, himself a part of the public sphere of communination
Nonexponential photoluminescence dynamics in an inhomogeneous ensemble of excitons in WSe$_2$ monolayers
Creators: name: Akmaev, M. A.
name: Kochiev, M. V.
name: Duleba, A. I.
name: Pugachev, M. V.
name: Kuntsevich, A. Yu.
name: Belykh, V. V.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The spectral and spatiotemporal dynamics of photoluminescence in monolayers of transition metal dichalcogenide WSe$_2$ obtained by mechanical exfoliation on a Si/SiO$_2$ substrate is studied over a wide range of temperatures and excitation powers. It is shown that the dynamics is nonexponential and, for times $t$ exceeding $\sim$50 ps after the excitation pulse, is described by a dependence of the form $1/(t+t_0)$. Photoluminescence decay is accelerated with a decrease in temperature, as well as with a decrease in the energy of emitting states. It is shown that the observed dynamics cannot be described by a bimolecular recombination process, such as exciton--exciton annihilation. A model that describes the nonexponential photoluminescence dynamics by taking into account the spread of radiative recombination times of localized exciton states in a random potential gives good agreement with experimental data.
Feasibility Study of the Utilization of Bangkok's Solid Waste
Creators: name: Krittaphas Mongkoldhumrongkul And Prapita Thanarak
Publisher: name: Center for Applied Economics Research (CAER), Faculty of Economics, Kasetsart University
Year: 2011
Subjects: solid waste, project analysis, sanitary landfill technology, pyrolysis technology

description: 18, 1, Applied Economics Journal
HTPG : hybrid test pattern generation for reducing test storage
Creators: name: Kalyanam, Vijay Kiran
Publisher: name: The University of Texas at Austin
Year: 2004
Subjects: Hybrid test pattern generation
Peak power
External test storage

description: Moore’s law is having an impact not only on the performance of the VLSI circuits but also on the testing aspects of it. Nowadays, the test data is enormous not only because system-on-chip has become ubiquitous but also due to transistor scaling, more complex, denser chips, and new fault models due to process variations. The clock frequencies of the chip are increasingly rapidly but the tester frequency is not able to keep up with it. There are also random pattern resistant faults in the circuits. Hence the need for both built-in self-test and external testing becomes necessary. This thesis proposes a hybrid test pattern generation (HTPG) scheme that is orthogonal to the functional design. The proposed HTPG scheme achieves large reduction in external test storage, has shorter test lengths, and also detects the random pattern resistant faults. The HTPG scheme has less area overhead than the circuitry required for most of the other schemes proposed for improving fault coverage and compression. The use of HTPG for test generation can also help in testing multiple cores at the same time by time-multiplexing the available tester channels
NICER Discovery of Millisecond X-ray Pulsations and an Ultracompact Orbit in IGR J17494-3030
Creators: name: Ng, Mason
name: Ray, Paul S.
name: Bult, Peter
name: Chakrabarty, Deepto
name: Jaisawal, Gaurava K.
name: Malacaria, Christian
name: Altamirano, Diego
name: Arzoumanian, Zaven
name: Gendreau, Keith C.
name: Güver, Tolga
name: Kerr, Matthew
name: Strohmayer, Tod E.
name: Wadiasingh, Zorawar
name: Wolff, Michael T.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We report the detection of 376.05 Hz (2.66 ms) coherent X-ray pulsations in NICER observations of a transient outburst of the low-mass X-ray binary IGR J17494-3030 in 2020 October/November. The system is an accreting millisecond X-ray pulsar in a 75 minute ultracompact binary. The mass donor is most likely a $\simeq 0.02 M_\odot$ finite-entropy white dwarf composed of He or C/O. The fractional rms pulsed amplitude is 7.4%, and the soft (1-3 keV) X-ray pulse profile contains a significant second harmonic. The pulsed amplitude and pulse phase lag (relative to our mean timing model) are energy-dependent, each having a local maximum at 4 keV and 1.5 keV, respectively. We also recovered the X-ray pulsations in archival 2012 XMM-Newton observations, allowing us to measure a long-term pulsar spin-down rate of $\dotν= -2.1(7)\times10^{-14}$ Hz/s and to infer a pulsar surface dipole magnetic field strength of $\simeq 10^9$ G. We show that the mass transfer in the binary is likely non-conservative, and we discuss various scenarios for mass loss from the system.
description: 10 pages, 3 figures, and 1 table; accepted for publication in ApJL
การตรวจวัดระดับความสูงน้ำท่วมในเขตชุมชนด้วยการประมวลผลภาพดิจิทัล
Creators: name: กฤษติยา พลกันยา
Publisher: name: สถาบันวิจัยและพัฒนา มหาวิทยาลัยกาฬสินธุ์
Year: 2024
Subjects: การคำนวณระดับความสูงน้ำท่วม
การแปลงฮัฟ
การประมวลผลภาพดิจิทัล

description: วารสารวิทยาศาสตร์ เทคโนโลยี และนวัตกรรม มหาวิทยาลัยกาฬสินธุ์, 3, 1, 16-24
การคัดเลือกไรโซแบคทีเรียทนแล้งที่ผลิตเอ็กโซพอลิแซ็กคาไรด์จากดินสวนผลไม้ในจังหวัดจันทบุรี
Creators: name: จิรภัทร จันทมาลี
Publisher: name: สถาบันวิจัยและพัฒนา มหาวิทยาลัยกาฬสินธุ์
Year: 2024
Subjects: ไรโซแบคทีเรียทนแล้ง
เอ็กโซพอลิแซ็กคาไรด์
ดินสวนผลไม้

description: วารสารวิทยาศาสตร์ เทคโนโลยี และนวัตกรรม มหาวิทยาลัยกาฬสินธุ์, 3, 1, 25-35
A Study of Crypto Influencers on Twitter to the Volatility of the DogeCoin Cryptocurrency
Creators: name: Wanvanissh Chorepancharoen And Ekarat Rattagan
Publisher: name: MSMIS Thammasat University
Year: 2566
Subjects: Cryptocurrency influential people
Twitter
Dogecoin
Cryptocurrency
Market volatility

description: Journal of information systems in Business JISB, 9, 3, 6