cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Manipulating single enzymes by an external harmonic force
Creators: name: Lomholt, Michael A.
name: Urbakh, Michael
name: Metzler, Ralf
name: Klafter, Joseph
Publisher: name: arXiv
Year: 2006
Subjects: subject: Biomolecules (q-bio.BM)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: We study a Michaelis-Menten reaction for a single two-state enzyme molecule, whose transition rates between the two conformations are modulated by an harmonically oscillating external force. In particular, we obtain a range of optimal driving frequencies for changing the conformation of the enzyme thereby controlling the enzymatic activity (i.e. product formation). This analysis demonstrates that it is, in principle, possible to obtain information about particular rates within the kinetic scheme.
description: 4 pages, 6 figures, minor changes, to appear in Phys. Rev. Lett
Chiral-logarithmic Corrections to the S and T Parameters in Higgsless Models
Creators: name: Dawson, S.
name: Jackson, C. B.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Recently, Higgsless models have proven to be viable alternatives to the Standard Model (SM) and supersymmetric models in describing the breaking of the electroweak symmetry. Whether extra-dimensional in nature or their deconstructed counterparts, the physical spectrum of these models typically consists of ``towers'' of massive vector gauge bosons which carry the same quantum numbers as the SM W and Z. In this paper, we calculate the one-loop, chiral-logarithmic corrections to the S and T parameters from the lightest (i.e. SM) and the next-to-lightest gauge bosons using a novel application of the Pinch Technique. We perform our calculation using generic Feynman rules with generic couplings such that our results can be applied to various models. To demonstrate how to use our results, we calculate the leading chiral-logarithmic corrections to the S and T parameters in the deconstructed three site Higgsless model. As we point out, however, our results are not exclusive to Higgsless models and may, in fact, be used to calculate the one-loop corrections from additional gauge bosons in models with fundamental (or composite) Higgs bosons.
description: 45 pages, 15 figures, added references, analysis of three site model expanded to include delocalized fermions
Irrationality of $ζ_q(1)$ and $ζ_q(2)$
Creators: name: Postelmans, Kelly
name: Van Assche, Walter
Publisher: name: arXiv
Year: 2006
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11J72, 11J82, 33D45

description: In this paper we show how one can obtain simultaneous rational approximants for $ζ_q(1)$ and $ζ_q(2)$ with a common denominator by means of Hermite-Pade approximation using multiple little q-Jacobi polynomials and we show that properties of these rational approximants prove that 1, $ζ_q(1)$, $ζ_q(2)$ are linearly independent over the rationals. In particular this implies that $ζ_q(1)$ and $ζ_q(2)$ are irrational. Furthermore we give an upper bound for the measure of irrationality.
Η λιθοτεχνία του τέλους του Πλειστόκαινου στον βορειοελλαδικό χώρο
Creators: name: Πουλατσόγλου, Δέσποινα Παύλου
Publisher: name: Aristotle University of Thessaloniki
Year: 2019
Subjects: Λιθοτεχνία
Νεάντερνταλ
Μέση Παλαιολιθική
Stone-tool industry
Neanderthal
Middle Paleolithic

description: Η έρευνα στη ΒΔ Πίνδο βασίζεται σε δύο βασικούς άξονες, τη μελέτη του αρχαιολογικού υλικού και την παλαιοπεριβαλλοντική μελέτη. Αρχικά, γίνεται αναφορά στην εικόνα της Παλαιολιθικής Εποχής στην περιοχή της Βόρειας Ελλάδας όπως έχει διαμορφωθεί μέχρι σήμερα με υποκεφάλαιο για την έρευνα και τις σημαντικότερες θέσεις της περιοχής και ιδιαίτερη αναφορά στην παρουσία της Μέσης Παλαιολιθικής στον ελλαδικό χώρο. Στη συνέχεια, αναφερόμενοι στην περιοχή της ΒΔ Πίνδου, επισημαίνεται η γεωμορφολογική περιγραφή της, αλλά και η ιστορία και η προβληματική της έρευνας σε αυτήν. Έπειτα, αναπτύσσονται τα χαρακτηριστικά της έρευνας στη «θέση» Σαμαρίνα 8, από όπου προέρχεται το αρχαιολογικό υλικό που μελετάται, με την περιγραφή της θέσης αναφορικά με το τοπίο, το παλαιοπεριβάλλον και την αρχαιολογική διερεύνηση της. Αναπτύσσεται η μεθοδολογία της μελέτης και παρουσιάζονται τα χαρακτηριστικά του αρχαιολογικού υλικού, ενώ τέλος υπάρχει μια συζήτηση για όλα τα παραπάνω και αναπτύσσονται τα συμπεράσματα της έρευνας
description: The research in NW Pindos is based on two main axes, the study of the archaeological material and the paleo-environmental study. Initially, reference is made to the image of the Palaeolithic Age in the area of Northern Greece as it has been shaped up to today with a sub-chapter on the research and the most important positions of the region and a particular reference to the presence of Middle Palaeolithic in Greece. Then, referring to the area of NW Pindos, its geomorphological description is highlighted, as well as the history and the deliberation of the research in it. Then, the characteristics of the research in the "spot" Samarina 8 are developed, from where the archaeological material is being studied, with the description of the position regarding the landscape, its paleoenvironment and its archaeological investigation. The methodology of the study is developed and the characteristics of the archaeological material are presented, while finally there is a discussion about all the above and the conclusions of the research are developed
Η εικονογραφία της δύναμης και εξουσίας στο Αιγαίο της Εποχής του Χαλκού
Creators: name: Ντοβόλης, Φώτιος Βασιλείου
Publisher: name: Aristotle University of Thessaloniki
Year: 2019
Subjects: Εικονογραφία
Δύναμη και εξουσία
Νεοανακτορική περίοδος
Iconography
Power and authority
Neopalatial period

description: Σκοπός της μεταπτυχιακής εργασίας ήταν η αναγνώριση στο εικονογραφικό αρχαιολογικό αρχείο της νεοανακτορικής Κρήτης, ενός είδους εικονογραφίας της δύναμης και εξουσίας. Ενός είδους εικονογραφίας δηλαδή το οποία να προβάλει και να λειτουργεί υπέρ μιας ή περισσοτέρων κοινωνικών ομάδων. Αρχικά πραγματοποιήθηκε η μελέτη της ιστορίας της έρευνας, μελετήθηκαν οι διάφορες θεωρητικές προσεγγίσεις σχετικά με την κοινωνική και πολιτική οργάνωση της νεοανακτορικής περιόδου και ανιχνεύθηκαν τρόποι με τους οποίους προβάλλεται η δύναμη μέσα από το αρχαιολογικό υλικό, ιδιαίτερα μέσα από την αρχιτεκτονική, τα σφραγιστικά συστήματα και τα λίθινα ανάγλυφα αγγεία. Στη συνέχεια παρουσιάστηκε η σχετική εικονογραφία και τέλος, αυτή αναλύθηκε σε σχέση με ορισμένες κατηγορίες κοινωνικών ταυτοτήτων με στόχο τη βαθύτερη κατανόηση της λειτουργίας της
description: The aim of the present thesis was the identification, throughout the iconographical archaeological repertoire of neopalatial Crete, of an iconography of power and authority. That is, a kind of iconography which projects and benefits one or more particular groups of society. Firstly, I studied the history of research in the respected field, the various theoretical approaches in regards with the social and political organization of the neopalatial era, and also tried to detect the ways in which power is exerted through the archaeological record, especially in architecture, sealing systems and stone relief vases. Then the related iconography was presented and finally analyzed concerning certain categories of social identities, aiming to a deeper understanding of its usage
Comparison of SO2 and NOx space-born observations with bottom-up emission inventories over Eastern Europe
Creators: name: Ταγίκας, Χρήστος Σταύρου
Publisher: name: Aristotle University of Thessaloniki
Year: 2019
Subjects: Ανατολική Ευρώπη
NOx (οξείδιο του αζώτου/nitrogen oxides)
SO2 (διοξείδιο του Θείου/sulfur dioxide)
Eastern Europe

description: Τα οξείδια του αζώτου (Nox) και το διοξείδιο του θείου (SO2) αποτελούν ατμοσφαιρικούς ρύπους επικίνδυνους για τα οικοσυστήματα παγκοσμίως, γεγονός που καθιστά απαραίτητη την παρακολούθηση των συγκεντρώσεών τους προκειμένου να ληφθούν τα κατάλληλα μέτρα για τον έλεγχο των εκπομπών τους. Η περιοχή στην οποία εστιάζουμε είναι η Ανατολική Ευρώπη, μία περιοχή με ιδιαίτερα γεωγραφικά χαρακτηριστικά και ενδιαφέρουσα πολιτική ιστορία που έχει επηρεάσει καθοριστικά τη βιομηχανία και τις μεθόδους παραγωγής ενέργειας. Στην παρούσα μελέτη χρησιμοποιήσαμε μία βάση εκπομπών και δορυφορικές παρατηρήσεις οξειδίων του αζώτου και διοξειδίου του θείου στην Ανατολική Ευρώπη καλύπτοντας διαφορετικές χρονικές περιόδους, από το 1970 έως το 2017. Εντοπίσαμε μεγάλες αστικές περιοχές, βιομηχανικές ζώνες και τη θέση σταθμών παραγωγής ηλεκτρικής ενέργειας που κάνουν χρήση απαρχαιωμένων μεθόδων και χαμηλής ποιότητας καυσίμων για την παραγωγή ηλεκτρισμού. Μελετώντας τους σχετικούς χάρτες, καταλήγουμε σε μία καλή συσχέτιση μεταξύ των δορυφορικών παρατηρήσεων και του καταλόγου εκπομπών. Λαμβάνοντας υπόψη την παγκόσμια κάλυψη και την ευκολία απόκτησης και ενημέρωσης της δορυφορικής πληροφορίας, συμπεραίνουμε ότι οι δορυφόροι αποτελούν μία αξιόπιστη πηγή για την ανίχνευση και καταγραφή της ατμοσφαιρικής ρύπανσης
description: Nitrogen oxides (NOx) and sulfur dioxide (SO2) are air pollutants that endanger the wellness of global ecosystems, which makes the monitoring of their concentrations essential so as to take the appropriate measures to control their emissions. The area we focus on is Eastern Europe, a region with unique geographical characteristics and interesting political history that has long affected the industry and the energy production methods. In this study we used bottom-up and top-down observations of NOx and SO2 over Eastern Europe covering different time spans, from 1970 to 2017. We have identified large urban areas, industrial zones and the location of power plants that use obsolete methods and low quality fuels to produce electricity. By studying the relevant maps, we conclude to a good correlation between satellite observations and bottom-up emission inventories. Considering the global coverage and convenient ways to retrieve and update the top-down emission datasets, we conclude that satellites are
Proper motions of spectrally selected structures in the HH 83 outflow
Creators: name: Movsessian, T. A.
name: Magakian, T. Yu.
name: Moiseev, A. V.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We continue our program of investigation of the proper motions of spectrally separated structures in the Herbig-Haro outflows with the aid of Fabry-Perot scanning interferometry. This work mainly focuses on the physical nature of various structures in the jets. The aim of the present study is to measure the proper motions of the previously discovered kinematically separated structures in the working surface of the HH 83 collimated outflow. We used observations from two epochs separated by 15 years, which were performed on the 6m telescope with Fabry-Perot scanning interferometer. We obtained images corresponding to different radial velocities for the two separate epochs, and used them to measure proper motions. In the course of our data analysis, we discovered a counter bow-shock of HH 83 flow with positive radial velocity, which makes this flow a relatively symmetric bipolar system. The second epoch observations confirm that the working surface of the flow is split into two structures with an exceptionally large (250 km\ s$^{-1}$) difference in radial velocity. The proper motions of these structures are almost equal, which suggests that they are physically connected. The asymmetry of the bow shock and the turning of proper motion vectors suggests a collision between the outflow and a dense cloud. The profile of the H$α$ line for the directly invisible infrared source HH 83 IRS, obtained by integration of the data within the reflection nebula, suggests it to be of P Cyg type with a broad absorption component characteristic of the FU Ori like objects. If this object underwent an FU Ori type outburst, which created the HH 83 working surfaces, its eruption took place about 1500 years ago according to the kinematical age of the outflow.
description: 7 pages, 6 figures
Resonant transparency of materials with negative permittivity
Creators: name: Fourkal, E.
name: Velchev, I.
name: Ma, C-M.
name: Smolyakov, A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Optics (physics.optics)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: It is shown that the transparency of opaque material with negative permittivity exhibits resonant behavior. The resonance occurs as a result of the excitation of the surface waves at slab boundaries. Dramatic field amplification of the incident evanescent fields at the resonance improves the resolution of the the sub-wavelength imaging system (superlens). A finite thickness slab can be totally transparent to a \textit{p}-polarized obliquely incident electromagnetic wave for certain values of the incidence angle and wave frequency corresponding to the excitation of the surface modes. At the resonance, two evanescent waves have a finite phase shift providing non-zero energy flux through the non-transparent region.
Phonological and Morphological Analysis of the Dialect of Krania, Elassona
Creators: name: Μπομπόλα, Ευαγγελία Χρήστου
Publisher: name: Aristotle University of Thessaloniki
Year: 2019
Subjects: Κρανιά
Ελασσόνα
Φωνολογία
Krania
Elassona
Phonology

description: Σκοπός της διατριβής είναι η εξέταση της διαλέκτου της Κρανιάς, Ελασσόνας, η οποία αποτελεί μία ελληνική βόρεια διάλεκτο, από φωνολογική και μορφολογική άποψη. Για το σκοπό αυτό, διεξήχθη μία έρευνα βασισμένη στην ανάλυση ηχογραφημένων διαλόγων από τέσσερεις διαφορετικές ηλικιακές ομάδες, οι οποίοι είναι κάτοικοι της Κρανιάς. Η εξερεύνηση των δεδομένων έδειξε ότι η διάλεκτος της Κρανιάς χαρακτηρίζεται από αύξηση των μεσαίων άτονων φωνηέντων και αποβολή των υψηλών άτονων φωνηέντων. Τα ακουστικά αυτά φαινόμενα επηρεάζουν τη μορφολογία της διαλέκτου της Κρανιάς και ως αποτέλεσμα, το μορφολογικό της σύστημα παρουσιάζει κάποιες διαφορές σε σχέση με τη μορφολογία της σύγχρονης ελληνικής γλώσσας
description: The aim of this MA thesis is to investigate the dialect of Krania, Elassona, which constitutes a Northern Greek dialect, from a phonological and morphological perspective. For this purpose, a descriptive, empirical research study was conducted based on the analysis of the recorded dialogues of four different age groups, who are residents of Krania. The exploration of the data showed that the dialect of Krania exhibits optional unstressed mid vowel raising and optional unstressed high vowel deletion. These acoustic phenomena influence the inflectional morphology of the dialect of Krania and as a result, its morphological system exhibits some differences compared to the morphology of Standard Modern Greek
Acoustic Study of Vowel Reduction by Greek Adolescents with Cochlear Implant and Normal Hearing
Creators: name: Γαύρου, Παρασκευή Βασιλείου
Publisher: name: Aristotle University of Thessaloniki
Year: 2019
Subjects: Φωνητική Μείωση
Κοχλιακό Εμφύτευμα
Βαρηκοΐα
Vowel reduction
Cochlear implant
Hearing Impairment

description: Σκοπός της διατριβής ήταν η μελέτη της φωνητικής μείωσης σε Έλληνες Εφήβους με κοχλιακό εμφύτευμα και φυσιολογική ακοή. Εξετάσαμε δισύλλαβες λέξεις τονισμένες σε αρχική και τελική θέση καθώς και τρισύλλαβες τονισμένες σε προτονική, τονισμένη και ποστονική θέση στη μέση της συλλαβής. Ερευνήσαμε την επίδραση του τόνου, του αριθμού των συλλαβών και το φύλλο στη διάρκεια, συχνότητες και ένταση των ελληνικών φωνηέντων με τη χρήση του Praat λογισμικού
description: The research study is about the acoustic analysis of vowel reduction related to Greek vowels / i, ɐ, o, ɛ, u / produced by teenagers with cochlear implants (CI) compared to normal hearing (NH) speakers. The corpus included disyllabic words stressed in initial and final syllable, as well as sets of trisyllabic words with the same segmental composition of the form (C)VCVCV but different stress placement to test pre-stressed, stressed and post-stressed vowels. We measured the effect of stress, position, number of syllables and gender on the duration, formant frequencies (F1, F2), fundamental frequency (F0) and the intensity (I) of the Greek vowels produced by adolescents with profound hearing impairment and with normal hearing by using the Praat software (Boersma & Weenink, 2001)
Closed timelike geodesics in a gas of cosmic strings
Creators: name: Gron, Oyvind
name: Johannesen, Steinar
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We find a class of solutions of Einstein's field equations representing spacetime outside a spinning cosmic string surrounded by a gas of non-spinning cosmic strings, and show that there exist closed timelike geodesics in this spacetime.
description: 13 pages, 1 figure
Μη Παρεμβατική Παρακολούθηση Ηλεκτρικού Φόρτου με Τεχνικές Νευρωνικών Δικτύων
Creators: name: Κύρκου, Λαμπρινή Αντωνίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2019
Subjects: Τεχνητά Νευρωνικά Δίκτυα
Επιμερισμός Ενέργειας
Μηχανική Μάθηση
Artificial Neural Networks
Energy Disaggregation
Machine Learning

description: Αντικείμενο της παρούσας εργασίας είναι η εξερεύνηση του πεδίου της μη παρεμβατικής παρακολούθησης ηλεκτρικού φόρτου σε σπίτια με χρήση τεχνικών μηχανικής μάθησης. Στην εργασία αναλύονται οι κυριότερες των τεχνικών που έχουν αναπτυχθεί για το πρόβλημα αυτό. Καθώς επίσης, αναπτύσσεται και υλοποιείται μία νέα τεχνική που βασίζεται στις αρχές της μεταφοράς χαρακτηριστικών σε άλλη διάσταση και τύπο. Δηλαδή μετατρέπεται το ηλεκτρικό σήμα σε μορφή εικόνων και στη συνέχεια σε μορφή χαρακτηριστικών με χρήση Τεχνητού Νευρωνικού Δικτύου και εξετάζεται πόσο επιτυχής είναι αυτή η μέθοδος σε σύγκριση με προηγούμενες υλοποιημένες μεθόδους της βιβλιογραφίας. Η μέθοδος που προτείνεται στην παρούσα εργασία λειτουργεί καλύτερα για ορισμένες συσκευές σε σχέση με τα συγκρινόμενα μοντέλα
description: Goal of this thesis is to explore the field of Non Intrusive Load Monitoring in houses with the application of machine learning techniques. The main existing techniques and models, that have been applied to the NILM problem, are analysed. Furthermore, a new technique based on transfer learning is developed and described. This technique is based on transferring the input data first at image representation and then to a different input space using a pretrained Artificial Neural Network. The proposed method is then directly compared to previously existing methods. It is found out that the proposed method outperforms the
Diesel Engine Startup Characterization with Pure Component and Conventional Navy Fuels
Creators: name: Burnett, Kevin
Publisher: name: Digital Repository at the University of Maryland
Year: 2015
Subjects: subject: Mechanical engineering
subject: FOS: Mechanical engineering

description: In an effort to diminish the energy consumption of the Department of the Navy, strict energy goals have been implemented, to include the use of renewable fuels.  Many of the renewable fuels that are currently being evaluated by the Department of the Navy are pure component or only have a few components of hydrocarbons.  In order to determine and compare the startup performance of pure component, renewable fuels and conventional Navy fuels, three pure component fuels and standard naval aviation fuel were tested in a single-cylinder diesel engine, varying compression ratio and air-fuel equivalence ratio.  It was found that startup performance is improved from any three of the following:  decreasing air-fuel equivalence ratio, increasing compression ratio, and finally, increasing cetane number.  Additionally, startup performance was affected by the density and bulk modulus of each of the tested fuels.
Greek knowledge of India before the fourth century B.C
Creators: name: Solomou, Stavros
Publisher: name: University of British Columbia
Year: 2008

description: When Alexander the Great marched over to India towards the end of the 4th century B.C. and incorporated a section of this country in his Empire, it was not the first time that the ancient Greeks were learning about this part of the world, for they had known quite a lot about it already from centuries before. Indian words for various products from that country are to be found in Greek literature prior to the 4th century B.C., and even Homer shows awareness of a certain people living in the Far East whom he vaguely calls "Ethiopians". Knowledge of this region increased at the end of the 6th century B.C. when a Greek from Ionia, by the name of Scylax, was sent by the Persian king to explore the Indus valley. He completed this voyage and wrote a book about what he saw. His work was used by Hecataeus, a fellow Greek from Ionia, around the beginning of the 5th century B.C., when he decided to include a section about India in a geographical book which he was writing. Hecataeus' work was, in turn, used by Herodotus, who also wrote a few chapters on India in his Histories, towards the end of the 5th century B.C. An examination of these three authors will show that the ancient Greeks, prior to Alexander's expedition, knew not only about the topography, climate, and creatures of this country, but also about the inhabitants, their customs, and, in some cases, their names. Their knowledge, in fact, extended so far so as to even include the names of some of India's cities and regions. Alexander the Great, in other words, when he reached India, was not revealing to the Greeks of his time a country about which they knew nothing, but was rather expanding the knowledge which they already had. This thesis undertakes to examine the extent of Greek knowledge of India down to the beginning of the fourth century B.C. and to test its accuracy.
Additional file 1 of Carbon nanoparticles-Fe(II) complex for efficient theranostics of xenografted colonic tumor
Creators: name: Xie, Ping
name: Huang, Yuanfang
name: Tang, Kexin
name: Wu, Xian
name: Zeng, Cheng
name: Yang, Sheng-Tao
name: Tang, Xiaohai
Publisher: name: figshare
Year: 2023
Subjects: subject: Biophysics
subject: Biochemistry
subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Pharmacology
subject: Biotechnology
subject: Environmental Sciences not elsewhere classified
subject: Chemical Sciences not elsewhere classified
subject: Cancer

description: Additional file 1: Figure S1. Representative Western blot images for GPX4 and ACSL4 in Fig. 2. Figure S2. Additional TEM images of the control group and the cells exposed to CNSI-Fe. Figure S3. Representative Western blot images for GPX4 and immunohistochemical staining images for caspase-3 and Ki67 in Fig. 6. Figure S4. Transcriptome analysis of tumor tissue after the treatment of CNSI or CNSI-Fe.
Probing Polarization and the Role of Magnetic Fields in Cloud Destruction in the Keyhole Nebula
Creators: name: Seo, Young Min
name: Dowell, C. Darren
name: Goldsmith, Paul F.
name: Pineda, Jorge L.
name: Majumdar, Liton
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present polarimetric observations of the Keyhole Nebula in the Carina Nebula Complex carried out using the Stratospheric Observatory for Infrared Astronomy. The Keyhole Nebula located to the west of $η$ Carinae is believed to be disturbed by the stellar winds from the star. We observed the Keyhole Nebula at 89 $μ$m wavelength with the HAWC+ instrument. The observations cover the entire Keyhole Nebula spanning 8$'$ by 5$'$ with central position RA = 10:44:43 and Dec = -59:38:04. The typical uncertainty of polarization measurement is less than 0.5\% in the region with intensity above 5,500 MJy sr$^{-1}$. The polarization has a mean of 2.4\% with a standard deviation of 1.6\% in the region above this intensity, similar to values in other high--mass star--forming regions. The magnetic field orientation in the bar--shaped structure is similar to the large--scale magnetic field orientation. On the other hand, the magnetic field direction in the loop is not aligned with the large--scale magnetic fields but has tight alignment with the loop itself. Analysis of the magnetic field angles and the gas turbulence suggests that the field strength is $\sim$70 $μ$G in the loop. A simple comparison of the magnetic field tension to the ram pressure of $η$ Carinae's stellar wind suggests that the magnetic fields in the Keyhole Nebula are not strong enough to maintain the current structure against the impact of the stellar wind, and that the role of the magnetic field in resisting stellar feedback in the Keyhole Nebula is limited.
description: ApJ accepted. This is the version of the article before peer review or editing, as submitted by an author to ApJ. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it
Εφαρμογή νευρωνικών δικτύων με τεχνικές πολλαπλών μοντέλων πρόβλεψης (ensembles) για το πρόβλημα του επιμερισμού ηλεκτρικής ενέργειας
Creators: name: Συμεωνίδης, Νικόλαος Θεοχάρη
Publisher: name: Aristotle University of Thessaloniki
Year: 2019
Subjects: Τεχνητά νευρωνικά δίκτυα
Επιμερισμός ενέργειας
Τεχνικές πολλαπλών μοντέλων πρόβλεψης
Artificial Neural Networks
Energy Disaggregation
Ensembles

description: Ο επιμερισμός ενέργειας είναι η διαδικασία της αποσύνθεσης του σήματος συνολικής ενέργειας ενός μετρητή, στις επιμέρους συνιστώσες που αφορούν τις συσκευές. Η πρόσφατη αύξηση του ενδιαφέροντος σε αυτόν τον τομέα έχει οδηγήσει στην υλοποίηση πολλών διαφορετικών τεχνικών, μεταξύ των οποίων τα τεχνητά νευρωνικά δίκτυα παρουσιάζουν εντυπωσιακά αποτελέσματα. Σε αυτήν την εργασία προτείνουμε μία κατηγοριοποίηση πειραμάτων που θα μπορούν να χρησιμοποιηθούν ως σημείο αναφοράς, για την αποτελεσματικότερη αξιολόγηση των πιο σημαντικών πτυχών σε αυτή τη διαδικασία. Επιπλέον, με τη χρήση αυτών των πειραμάτων διερευνάται η εφαρμογή της τεχνικής Stacking, συνδυάζοντας πέντε δημοφιλή νευρωνικά δίκτυα. Τα μοντέλα συγκρίνονται βάση 3 μετρικών και τα αποτελέσματα δείχνουν ότι το Stacking μπορεί να βοηθήσει στη βελτίωση ή διασφάλιση της απόδοσης σε αρκετές περιπτώσεις, ειδικά σε συσκευές 2 καταστάσεων
description: Energy Disaggregation is the task of decomposing a single meter aggregate energy reading into its appliance level subcomponents. The recent growth of interest in this field has lead to development of many different techniques, among which Artificial Neural Networks have shown remarkable results. In this work we propose a categorization of experiments that should serve as a benchmark, along with a baseline of results, to efficiently evaluate the most important aspects for this task. Furthermore, using this benchmark we investigate the application of Stacking on five popular ANNs. The models are compared on three metrics and show that Stacking can help improve or ensure performance in certain cases, especially on 2-state devices
Biodegradable Spinal Implants: Advancing Spina Bifida Treatment with Regenerative Solutions
Creators: name: Karmakar, Omprakash
name: Pirouzi, Peivand
Publisher: name: Crown College of Canada
Year: 2025

description: Spina bifida, a congenital neural tube defect affecting roughly 1 in 1,000 births worldwide, arises from the incomplete closure of the spinal column during embryonic development, often resulting in significant neurological deficits and mobility challenges. The most severe form, myelomeningocele (MMC), leaves the spinal cord exposed, necessitating innovative interventions to minimize damage and improve quality of life. Traditional surgical methods, such as intrauterine repair or postnatal closure with permanent implants, carry risks like infection, rejection, or the need for additional surgeries, posing long-term burdens. Biodegradable spinal implants emerge as a promising solution, offering temporary support that naturally dissolves as healing progresses.
Sommerfeld-enhanced dark matter searches with dwarf spheroidal galaxies
Creators: name: Ando, Shin'ichiro
name: Ishiwata, Koji
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study observable signals from dark matter that self-annihilates via the Sommerfeld effect in dwarf spheroidal galaxies (dSphs). Since the effect of the Sommerfeld enhancement depends on the velocity of dark matter, it is crucial to determine the profile of dSphs to compute the J-factor, i.e., the line-of-sight integral of density squared. In our study we use the prior distributions of the parameters for satellite density profiles in order to determine the J-factor, making most out of the recent developments in the N-body simulations and semi-analytical modeling for the structure formation. As concrete models, we analyze fermionic dark matter that annihilates via a light scalar and Wino dark matter in supersymmetric models. We find that, with the more realistic prior distributions that we adopt in this study, the J-factor of the most promising dSphs is decreased by a factor of a few, compared with earlier estimates based on non-informative priors. Nevertheless, the Cherenkov Telescope Array should be able to detect the thermal Wino dark matter by pointing it toward best classical or ultrafaint dSphs for 500 hours.
description: 28 pages, 10 figures, published version
Raman spectroscopy of epitaxial graphene on a SiC substrate
Creators: name: Ni, Z. H.
name: Chen, W.
name: Fan, X. F.
name: Kuo, J. L.
name: Yu, T.
name: Wee, A. T. S.
name: Shen, Z. X.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The fabrication of epitaxial graphene (EG) on SiC substrate by annealing has attracted a lot of interest as it may speed up the application of graphene for future electronic devices. The interaction of EG and the SiC substrate is critical to its electronic and physical properties. In this work, Raman spectroscopy was used to study the structure of EG and its interaction with SiC substrate. All the Raman bands of EG blue shift from that of bulk graphite and graphene made by micromechanical cleavage, which was attributed to the compressive strain induced by the substrate. A model containing 13 x 13 honeycomb lattice cells of graphene on carbon nanomesh was constructed to explain the origin of strain. The lattice mismatch between graphene layer and substrate causes the compressive stress of 2.27 GPa on graphene. We also demonstrate that the electronic structures of EG grown on Si and C terminated SiC substrates are quite different. Our experimental results shed light on the interaction between graphene and SiC substrate that are critical to the future applications of EG.
description: 20 pages, 5 figures
Microlensing in phase space I: Continuous propagation of variability moments
Creators: name: Tuntsov, Artem V.
name: Lewis, Geraint F.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: A method to calculate the statistical properties of microlensing light curves is developed. The approach follows works by Deguchi & Watson, Seitz & Schneider and Neindorf, attempting to clarify the ideas involved and techniques used in the calculations. The method is then modified to include scattering by multiple lensing planes along the line of sight and transition to a continuous limit of this treatment for average quantities is performed leading to a Fokker-Planck type equation. The equation is solved for a particular model of the random star field and microlensing effect on the flux temporal variability is extracted. Applications in astrophysically relevant situations are discussed.
description: Accepted for publication in MNRAS. 15 pages, 4 figures. The second part of this little series is available at http://www.arxiv.org/abs/astro-ph/0604190
Betti Curves of Rank One Symmetric Matrices
Creators: name: Curto, Carina
name: Paik, Joshua
name: Rivin, Igor
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantitative Methods (q-bio.QM)
subject: FOS: Biological sciences

description: Betti curves of symmetric matrices were introduced in (Giusti et. al., 2015) as a new class of matrix invariants that depend only on the relative ordering of matrix entries. These invariants are computed using persistent homology, and can be used to detect underlying structure in biological data that may otherwise be obscured by monotone nonlinearities. Here we prove three theorems that fully characterize the Betti curves of rank 1 symmetric matrices. We then illustrate how these Betti curve signatures arise in natural data obtained from calcium imaging of neural activity in zebrafish.
description: 10 pages, 6 figures
Graded Betti numbers of Cohen-Macaulay modules and the Multiplicity conjecture
Creators: name: Boij, Mats
name: Söderberg, Jonas
Publisher: name: arXiv
Year: 2006
Subjects: subject: Commutative Algebra (math.AC)
subject: FOS: Mathematics

description: We give conjectures on the possible graded Betti numbers of Cohen-Macaulay modules up to multiplication by positive rational numbers. The idea is that the Betti diagrams should be non-negative linear combinations of pure diagrams. The conjectures are verified in the cases where the structure of resolutions are known, i.e., for modules of codimension two, for Gorenstein algebras of codimension three and for complete intersections. The motivation for the conjectures comes from the Multiplicity conjecture of Herzog, Huneke and Srinivasan.
description: 24 pages, references and examples added
Gino, Moore, & Bazerman (2009) Replication and extensions
Creators: name: Feldman, Gilad
name: Chan, Yan
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Social and Behavioral Sciences
subject: behavioral ethics
subject: ethical behavior
subject: judgment and decision making
subject: outcome bias
subject: replication

description: Please see pre-registration folder for Qualtrics survey and very detailed pre-registration with simulated random dataset and analysis code attached.
The loop problem for monoids and semigroups
Creators: name: Kambites, Mark
Publisher: name: arXiv
Year: 2006
Subjects: subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics
subject: 20M05, 20M35, 68Q70

description: We propose a way of associating to each finitely generated monoid or semigroup a formal language, called its loop problem. In the case of a group, the loop problem is essentially the same as the word problem in the sense of combinatorial group theory. Like the word problem for groups, the loop problem is regular if and only if the monoid is finite. We study also the case in which the loop problem is context-free, showing that a celebrated group-theoretic result of Muller and Schupp extends to describe completely simple semigroups with context-free loop problems. We consider also right cancellative monoids, establishing connections between the loop problem and the structural theory of these semigroups by showing that the syntactic monoid of the loop problem is the inverse hull of the monoid.
description: 21 pages
How free is your linearizable concurrent data structure?
Creators: name: Henzinger, Thomas
name: Sezgin, Ali
Publisher: name: IST Austria
Year: 2013
Subjects: 000 Computer science, knowledge & general works

description: Linearizability requires that the outcome of calls by competing threads to a concurrent data structure is the same as some sequential execution where each thread has exclusive access to the data structure. In an ordered data structure, such as a queue or a stack, linearizability is ensured by requiring threads commit in the order dictated by the sequential semantics of the data structure; e.g., in a concurrent queue implementation a dequeue can only remove the oldest element. In this paper, we investigate the impact of this strict ordering, by comparing what linearizability allows to what existing implementations do. We first give an operational definition for linearizability which allows us to build the most general linearizable implementation as a transition system for any given sequential specification. We then use this operational definition to categorize linearizable implementations based on whether they are bound or free. In a bound implementation, whenever all threads observe the same logical state, the updates to the logical state and the temporal order of commits coincide. All existing queue implementations we know of are bound. We then proceed to present, to the best of our knowledge, the first ever free queue implementation. Our experiments show that free implementations have the potential for better performance by suffering less from contention.
Performance of Deterministic Dynamical Decoupling Schemes: Concatenated and Periodic Pulse Sequences
Creators: name: Khodjasteh, Kaveh
name: Lidar, Daniel A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Dynamical decoupling can be used to preserve arbitrary quantum states despite undesired interactions with the environment, using control Hamiltonians affecting the system only. We present a system-independent analysis of dynamical decoupling based on leading order decoupling error estimates, valid for bounded-strength environments. Using as a key tool a renormalization transformation of the effective system-bath coupling Hamiltonian, we delineate the reliability domain of dynamical decoupling used for quantum state preservation, in a general setting for a single qubit. We specifically analyze and compare two deterministic dynamical decoupling schemes -- periodic and concatenated -- and distinguish between two limiting cases of fast versus slow environments. We prove that concatenated decoupling outperforms periodic decoupling over a wide range of parameters. These results are obtained for both ``ideal'' (zero-width) and realistic (finite-width) pulses This work extends and generalizes our earlier work, Phys. Rev. Lett. 95, 180501 (2005).
description: 17 pages, including 2 figures. v2: added a section on decoupling spins in GaAs quantum dots, and some other improvements and additions
Additional file 1 of Development and optimizing a simple and cost-effective medium for in vitro culture of Plasmodium berghei-ANKA strain with conserving its infectivity in BALB/c mice
Creators: name: Hanifian, Haleh
name: Nateghpour, Mehdi
name: Motevalli Haghi, Afsaneh
name: Teimouri, Aref
name: Razavi, Sepand
name: Fariver, Leila
Publisher: name: figshare
Year: 2022
Subjects: subject: Space Science
subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: Science Policy
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Additional file 1: Figure S1. Monitoring parasitemia in culture of P. berghei via thin blood smears staining with Giemsa stain. Figure S2. Monitoring parasitemia in culture of P. berghei via thin blood smears staining with Giemsa stain.
Hoskins, J.L., Janion-Scheepers, C., Ireland, E., Monro, K. & Chown, S.L. 2020
Creators: name: Chown, Steven
name: Janion-Scheepers, Charlene
name: Monro, Keyne
name: Hoskins, Jessica
Publisher: name: Monash University
Year: 2021
Subjects: subject: 60807 Animal Structure and Function
subject: FOS: Biological sciences

description: Manuscript of Hoskins, J.L., Janion-Scheepers, C., Ireland, E., Monro, K. & Chown, S.L. 2020. Constant and fluctuating temperature acclimations have similar effects on phenotypic plasticity in springtails. Journal of Thermal Biology 93, 102690.
EFFECTS OF ASSESSMENT FREQUENCY AND DATA-MANAGEMENT LAG ON FISHERY MANAGMEMENT PERFORMANCE: STRATEGIES FOR IMPROVEMENT
Creators: name: Sylvia, Andrea Lynn
Publisher: name: Digital Repository at the University of Maryland
Year: 2015
Subjects: subject: Fisheries and aquatic sciences
subject: Environmental studies
subject: Data lag
subject: Fisheries
subject: Lag reduction methods
subject: Stock assessmnet interval

description: Some challenges of using stock assessments in management decisions are data availability and the allocation of resources to conduct stock assessments in a frequent and timely manner.  We conducted a simulation evaluation that included the population dynamics, stock assessment, and management. Our objectives were to 1) determine effects of assessment interval and data-management lag and 2) test methods to reduce data lag by using partial data in the last year of the assessment. We found that increasing assessment interval and data-management lag caused a decrease in average catch and biomass across scenarios, with data-management lag having a larger effect compared to assessment interval. To reduce the effects of data-management lag, lag reduction methods that included some information about the age-composition of the catch and survey performed about as well as not having lag.  Stock assessment interval, data-management lag and lag reduction methods should be considered when designing fishery management plans.
Noisy Jets and Emission Components in Galactic X-Ray Binaries
Creators: name: Belloni, Tomaso
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Our knowledge of the phenomenology of accretion onto black holes has increased considerably thanks to ten years of observations with the RXTE satellite. However, only recently it has been possible to derive a scheme for the outburst evolution of transient systems on the basis of their spectral and timing properties, reaching a comprehensive definition of source states. These states are in turn linked to the ejection of relativistic jets as observed in the radio band. Here I concentrate on some specific aspects of this classification, concentrating on the properties of the aperiodic variability and on their link with jet ejection.
description: 6 pages, 3 figures; To appear in "The Multicoloured Landscape of Compact Objects and their Explosive Progenitors: Theory vs Observations" (Cefalu, Sicily, June 2006). Eds. L. Burderi et al. (New York: AIP)
Qualifying ringdown and shadow of black holes under general parametrized metrics with photon orbits
Creators: name: Li, Song
name: Abdujabbarov, Ahmadjon A.
name: Han, Wen-Biao
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The motion of photons around black holes determines the shape of shadow and match the ringdown properties of a perturbed black hole. Observations of shadows and ringdown waveforms will reveal the nature of black holes. In this paper, we study the motion of photons in a general parametrized metric beyond the Kerr hypothesis. We investigated the radius and frequency of the photon circular orbits on the equatorial plane and obtained fitted formula with varied parameters. The Lyapunov exponent which connects to the decay rate of the ringdown amplitude is also calculated. We also analyzed the shape of shadow with full parameters of the generally axisymmetric metric. Our results imply the potential constraint on black hole parameters by combining the Event Horizon Telescope and gravitational wave observations in the future.
description: 18 pages, 27 figures
Children’s transitive reasoning: effects of visual-spatial and linguistic task conditions
Creators: name: Drummond, Jane Elizabeth
Publisher: name: University of British Columbia
Year: 2008

description: This research was designed to explore the nature of reasoning. In general, three categories of theories about reasoning (the inferential rule approach, the mental models approach, and the operational constructive approach) are used to explain reasoning. In this research, a simple transitivity of length task was selected as the experimental vehicle to explore these approaches for their veracity. Each approach was assessed for spatial and linguistic conditions which might influence reasoning about transitive length relations. The length difference under consideration in the reasoning task, the order in which the premise statements about the length differences were presented and the linguistic relational term used to describe the length difference were selected as the experimental variables. Three measures of reasoning about transitive length relations were assessed: judgements, judgements-plus-justifications, and necessity understanding. A between-within factorial, cross-sectional design was employed. The order of the premise statements (optimal/control) was manipulated as the experimental between-subjects factor. The two experimental within-subjects factors, length difference (large/small) and linguistic relational term (“longer”/”shorter”), were fully crossed and counterbalanced. Ninety-six preschool and school-age children, evenly divided by gender and age (5-6 years, 7-8 years, 9-10 years), participated in the study. The developmental character of transitive reasoning in the age range studied was confirmed for two of the three measures of reasoning. More failures of judgement were observed when a large length difference was matched with the linguistic relational term “longer” and when a small length difference was matched with the linguistic relational term “shorter” than when the length differences and relational terms were mismatched. The arrangement of the premise figure did indirectly influence any measure of transitive reasoning but a large length difference in combination with the control premise figure was found to increase the frequency of transitive judgements-plus justifications. It is concluded from the analysis of the findings of this research that transitive reasoning about length is likely to result from constructive processes, rather then from application of logical rules. However, it is unclear whether the constructive processes in question are best explained in terms of cognitive operations or in terms of figurative mental models.
Phenomenology of the $SU(3)_c\otimes SU(3)_L\otimes U(1)_X$ model with exotic charged leptons
Creators: name: Salazar, Juan C.
name: Ponce, William A.
name: Gutiérrez, Diego A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: A phenomenological analysis of the three-family model based on the local gauge group $SU(3)_c\otimes SU(3)_L\otimes U(1)_X$ with exotic charged leptons, is carried out. Instead of using the minimal scalar sector able to break the symmetry in a proper way, we introduce an alternative set of four Higgs scalar triplets, which combined with an anomaly-free discrete symmetry, produce quark and charged lepton mass spectrum without hierarchies in the Yukawa coupling constants. We also embed the structure into a simple group and show some conditions to achieve a low gauge coupling unification, avoiding possible conflict with proton decay bounds. By using experimental results from the CERN-LEP, SLAC linear collider, and atomic parity violation data, we update constraints on several parameters of the model.
description: 18 pages, 6 figures. Accepted for publication in Physical Review D