cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
An investigation of the engagement of grade 12 students with a feminist reading of Romeo and Juliet
Creators: name: Jones, Sylvia
Publisher: name: University of British Columbia
Year: 2008

description: The study analyses the patterns of engagement of grade twelve students when they are taught a feminist critique of Romeo and Juliet by William Shakespeare. Using reader-response pedagogy in a classroom context of constructivism, the students attempted a feminist reading of the play. Their discussions, journals, essays and presentations were analysed, together with three questionnaires. Three patterns of engagement were discerned: conventional, feminist and inconsistent. Individual students showed all three patterns of engagement during the study. A conventional pattern of engagement was a response to the text which excluded any of the feminist critique. When students exhibited this pattern of engagement, they either did not see the feminism or rejected it. A feminist pattern of engagement was defined by an articulation of the feminist critique of Romeo and Juliet. Some of the characteristics of this engagement pattern were a sense of conviction about the critique and connections made between the critique and other aspects of life. An inconsistent pattern of engagement included some principles of feminist critique but not consistently, so that elements of the conventional pattern of engagement were also observed. Most students moved from a conventional pattern to a feminist or inconsistent pattern by the end of the study. In analysing these engagement patterns, it was found that when students engaged in a feminist pattern, they made a resistant reading of the text. It was also found that reader-response alone was not effective in producing this resistant reading. The students needed to be directed to the critique. Belief in an authoritative reading contributedto a conventional pattern of engagement. Attitudes towards feminism also influenced the pattern of engagement. The study raised the question of how to teach students to read resistantly so they become aware of the socially constructed meaning of the text.
สมบัติของดินและองค์ประกอบของคาร์บอนอินทรีย์โดยใช้เทคนิคอินฟาเรดในดินปลูกยางพาราภายใต้พืชร่วมยางพาราที่ต่างกัน
Creators: name: ขวัญตา ขาวมี
Publisher: name: กองบริหารการวิจัย
Year: 2564
Subjects: พืชร่วมยางพารา
องค์ประกอบของคาร์บอนอินทรีย์
สมบัติของดิน

description: วารสารวิทยาศาสตร์และเทคโนโลยี, 29, 5, 880-892
The inverse scattering transform and its relation to Riemann-Hilbert problems
Creators: name: Τριανταφυλλίδης, Δημήτριος Ιωάννη
Publisher: name: Aristotle University of Thessaloniki
Year: 2019
Subjects: Μετασχηματισμός
Σολιτόνια
Inverse scattering transform
Solitons
KdV

description: Παρουσιάζουμε τη μέθοδο Inverse Scattering Transform (IST) για τη μελέτη και την επίλυση μη γραμμικών εξισώσεων εξέλιξης, και τη σχέση της με τα προβλήματα Riemann - Hilbert. Στο Κεφάλαιο 1 γίνεται εισαγωγή στη μέθοδο και περιγράφουμε τα βασικά της βήματα, καθώς και την εφαρμογή της στην επίλυση της εξίσωσης Korteweg - de Vries (KdV). Το Κεφάλαιο 2 αποτελείται από ορισμούς και συμβάσεις στη μιγαδική ανάλυση που χρησιμοποιούνται στα κεφάλαια που ακολουθούν. Τα ολοκληρώματα τύπου Cauchy έχουν κεντρικό ρόλο στη θεωρία των προβλημάτων Riemann - Hilbert. Στο Κεφάλαιο 3 δίνεται ο ορισμός τους και εξετάζεται η ασυμπτωτική συμπεριφορά τους. Το Κεφάλαιο 4 είναι μία σύντομη εισαγωγή στα προβλήματα Riemann - Hilbert, και η σύνδεση με τη μέθοδο IST καταδεικνύεται στο Κεφάλαιο 5. Στο Κεφάλαιο 6 παρουσιάζουμε αριθμητικές μεθόδους για την εξίσωση KdV, καθώς και για την εξίσωση Kadomtsev–Petviashvili (KP), η οποία είναι επίσης επιλύσιμη με τη μέθοδο IST. Στα δύο τελευταία κεφάλαια παραθέτουμε αριθμητικές λύσεις των δύο εξισώσεων καθώς και τον κώδικα που χρησιμοποιήθηκε για τον υπολογισμό τους
description: We present the Inverse Scattering Transform (IST) method for studying and solving non-linear evolution equations, and its relation to Riemann-Hilbert problems. In Chapter 1 we introduce the method and describe its basic steps, as well as its application to the solution of the Korteweg - de Vries (KdV) equation. Chapter 2 consists of definitions and conventions in complex analysis that are used in the chapters that follow. Cauchy-type integrals play a central role in the theory of Riemann-Hilbert problems. In Chapter 3, their definition is given and their asymptotic behaviour is examined. Chapter 4 is a short introduction to Riemann-Hilbert problems, and the connection with the IST mehtod is finally shown in Chapter 5. In Chapter 6 we present numerical schemes for the KdV equation, and for the Kadomtsev–Petviashvili (KP) equation, which is also solvable by the IST. In the remaining two chapters, we show a few numerical solutions obtained, as well as the code used to produce them
Shock-related radio emission during coronal mass ejection lift-off?
Creators: name: Pohjolainen, S.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Aims: We identify the source of fast-drifting decimetric-metric radio emission that is sometimes observed prior to the so-called flare continuum emission. Fast-drift structures and continuum bursts are also observed in association with coronal mass ejections (CMEs), not only flares. Methods: We analyse radio spectral features and images acquired at radio, H-alpha, EUV, and soft X-ray wavelengths, during an event close to the solar limb on 2 June 2003. Results: The fast-drifting decimetric-metric radio burst corresponds to a moving, wide emission front in the radio images, which is normally interpreted as a signature of a propagating shock wave. A decimetric-metric type II burst where only the second harmonic lane is visible could explain the observations. After long-lasting activity in the active region, the hot and dense loops could be absorbing or suppressing emission at the fundamental plasma frequency. The observed burst speed suggests a super-Alfvenic velocity for the burst driver. The expanding and opening loops, associated with the flare and the early phase of CME lift-off, could be driving the shock. Alternatively, an instantaneous but fast loop expansion could initiate a freely propagating shock wave. The later, complex-looking decametre-hectometre wave type III bursts indicate the existence of a propagating shock, although no interplanetary type II burst was observed during the event. The data does not support CME bow shock or a shock at the flanks of the CME as the origin of the fast-drift decimetric-metric radio source. Therefore super-Alfvenic loop expansion is the best candidate for the initiation of the shock wave, and this result challenges the current view of metric/coronal shocks originating either in the flanks of CMEs or from flare blast waves.
description: 4 pages, 3 figures, accepted by A&A (Research Note)
A flexible anatomical set of mechanical models for the organ of Corti
Creators: name: Berger, Jorge
name: Rubinstein, Jacob
Publisher: name: arXiv
Year: 2021
Subjects: subject: Biological Physics (physics.bio-ph)
subject: FOS: Physical sciences

description: We built a flexible platform to study the mechanical operation of the organ of Corti (OoC) in the transduction of basilar membrane (BM) vibrations to oscillations of an inner hair cell bundle (IHB). The anatomical components that we consider are the outer hair cells (OHCs), the outer hair cell bundles, Deiters cells, Hensen cells, the IHB and various sections of the reticular lamina. In each of the components we apply Newton's equations of motion. The components are coupled to each other and are further coupled to the endolymph fluid motion in the subtectorial gap. This allows us to obtain the forces acting on the IHB, and thus study its motion as a function of the parameters of the different components. Some of the components include a nonlinear mechanical response. We found that slight bending of the apical ends of the OHCs can have a significant impact on the passage of motion from the BM to the IHB, including critical oscillator behaviour. In particular, our model implies that the components of the OoC could cooperate to enhance frequency selectivity, amplitude compression and signal to noise ratio in the passage from the BM to the IHB. Since the model is modular, it is easy to modify the assumptions and parameters for each component.
description: A similar version was posted in bioRxiv
EXCHANGE RATE MANAGEMENT AND AGRICULTURAL EXPORT FINANCING IN NIGERIA
Creators: name: FEMI-OLAGUNDOYE MERCY
name: OGBOI CHARLES
name: OMOSEBI TOLULOPE
Publisher: name: Zenodo
Year: 2023
Subjects: Exchange Rate, Management, Agriculture, Financing, Interest Rate.

description: Abstract

The agricultural sector's role in Nigeria's economic development, employment generation, and food security is pivotal. Despite its importance, the sector encounters persistent challenges, particularly in obtaining sufficient financial resources for sustainable growth. One crucial challenge is the agricultural sector's susceptibility to fluctuations in exchange rates, which can significantly impact the availability and cost of bank credit, ultimately affecting its ability to generate export revenue. In light of these issues, this study aimed to explore the relationship between exchange rate management and agricultural export financing in Nigeria. The study employed time series data covering exchange rates, interest rates, inflation, and agricultural export financing from 2000 to 2022, sourced from the Central Bank of Nigeria Statistical Bulletin. Fully Modified Ordinary Least Squares (FMOLS) methodology was adopted to address endogeneity concerns in the time series data, accounting for simultaneous relationships between variables. The study's findings indicated that exchange rate management plays a significant role in determining agricultural export financing in Nigeria (β1=0.0135; P=0.0045). Therefore, it is recommended that the Central Bank of Nigeria (CBN) adjusts interest rates to stabilize the Naira, as fluctuations in interest rates can impact the cost of borrowing for exporters. A currency depreciation accompanied by higher interest rates may increase the cost of agricultural financing.
The chiral critical line of N_f=2+1 QCD at zero and non-zero baryon density
Creators: name: de Forcrand, Philippe
name: Philipsen, Owe
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We present numerical results for the location of the chiral critical line at finite temperature and zero and non-zero baryon density for QCD with N_f=2+1 flavours of staggered fermions on lattices with temporal extent N_t=4. For degenerate quark masses, we compare our results obtained with the exact RHMC algorithm with earlier, inexact R-algorithm results and find a reduction of 25% in the critical quark mass, for which the first order phase transition changes to a smooth crossover. Extending our analysis to non-degenerate quark masses, we map out the chiral critical line up to the neighbourhood of the physical point, which we confirm to be in the crossover region. Our data are consistent with a tricritical point at a strange quark mass of ~500 MeV. Finally, we investigate the shift of the critical line with finite baryon density, by simulating with an imaginary chemical potential for which there is no sign problem. We observe this shift to be very small or, conversely, the critical endpoint μ^c(m_{u,d},m_s) to be extremely quark mass sensitive. Moreover, the sign of this shift is opposite to standard expectations. If confirmed on a finer lattice, it implies the absence of a critical endpoint or phase transition for chemical potentials μ_B < 500 MeV. We thus argue that finer lattices are required to settle even the qualitative features of the QCD phase diagram.
description: 25 pages, 12 figures; typos corrected, figures updated, some reformulations; version to be published
Diffractive hadroproduction of W and Z bosons at high energies
Creators: name: Ducati, M. B. Gay
name: Machado, M. M.
name: Machado, M. V. T.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Results from a phenomenological analysis of $W$ and $Z$ hard diffractive hadroproduction at high energies are reported. Using the Regge factorization approach, we consider the recent diffractive parton density functions extracted by the H1 Collaboration at DESY-HERA. In addition, we take into account multiple Pomeron exchange corrections considering a gap survival probability factor. It is find that the ratio of diffractive to non-diffractive boson production is in good agreement with the CDF and D0 data. We make predictions which could be compared to future measurements at the LHC.
description: 6 pages, 1 figure, 2 tables. Version to be published in Physical Review D
Phonons in disordered alloys : a multiple scattering approach
Creators: name: Alam, Aftab
name: Mookerjee, Abhijit
Publisher: name: arXiv
Year: 2006
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: In this paper we shall discuss the effect of disorder induced configuration fluctuations on single particle and two-particle phonon Green functions in substitutional random binary alloys. The randomness of the system will be dealt within the augmented space theorem, introduced by one of us [J. Phys. C : Solid State Phys. 6, L205(1973)]. This will be combined with a generalized Edwards-Langer diagrammatic technique to extract various useful results in the form of mathematical expressions. The purpose of present manuscript will be to describe the scattering diagrams in full detail. This will form the basis of the calculational algorithms which we had used in an earlier paper on NiPd and NiPt alloys [J. Phys.: Condens. Matter 18, 4589-4608 (2006)]. We shall show the structure of all possible scattering diagrams up to the 4-th order and subsequently illustrate how to obtain Dyson's equation from a re-summation of the diagrammatic series. We shall also study how disorder scattering affects two-particle Green functions associated with thermal response. We shall show that disorder scattering renormalizes both the phonon propagators as well as the heat currents. These renormalized heat currents will be shown to be related to the self-energy of the propagators. We shall also study a different class of scattering diagrams which are not related to the self-energy but rather to the vertex corrections.
description: 26 pages, 14 figures
Αριθμητική προσομοίωση σεισμικών επιταχυνσιογραφημάτων με χρήση στοχαστικών διαδικασιών
Creators: name: Χιονίδης, Σταύρος Ζαχαρία
Publisher: name: Aristotle University of Thessaloniki
Year: 2019
Subjects: Σεισμικά επιταχυνσιογραφήματα
Στοχαστικές διαδικασίες
Αντισεισμική μηχανική
Earthquake accelerograms
Stochastic processes
Earthquake engineering

description: Τα επιταχυνσιογραφήματα χρησιμοποιούνται για να αναπαραστήσουν την σεισμική εδαφική κίνηση και χρησιμοποιούνται στην ανελαστική δυναμική ανάλυση των κατασκευών. Η παραγωγή τεχνητών επιταχυνσιογραφημάτων καθίσταται απαραίτητη λόγω έλλειψης πλήθους φυσικών καταγραφών. Οι μέθοδοι παραγωγής τεχνητών επιταχυνσιογραφημάτων βασίζονται στη θεωρία των στοχαστικών διαδικασιών. Ένας τρόπος προσομοίωσης τυχαίων διαδικασιών είναι η φασματική αναπαράσταση. Το βασικό χαρακτηριστικό είναι το φάσμα ισχύος, το οποίο χαρακτηρίζει τη στοχαστική διαδικασία από την άποψη του συχνοτικού περιεχομένου και της εξέλιξης στο χρόνο. Η παρούσα διπλωματική ελέγχει τη μέθοδο διαχωρισμού για την εκτίμηση του εξελικτικού φάσματος ισχύος δειγμάτων της στοχαστικής διαδικασίας που χαρακτηρίζει το φαινόμενο του σεισμού. Τα δείγματα είναι τεχνητά επιταχυνσιογραφήματα που παράχθηκαν από τον αλγόριθμο του Sabetta and Pugliese αλλά και επιταχυνσιογραφήματα από τρεις πραγματικούς σεισμούς που χρησιμοποιούνται ως εισακτέα δείγματα για να εκτιμηθεί το εξελικτικό φάσμα ισχύος με τη μέθοδο διαχωρισμού. Χρησιμοποιήθηκε το λογισμικό Matlab R2018b της Mathworks. Το βασικό πλεονέκτημα αυτής της μεθόδου είναι η ελαχιστοποίηση της φασματικής διασποράς εξαιτίας του πολύ καλού εντοπισμού της συχνότητας σε σχέση με το χρόνο αλλά το μειονέκτημα του είναι ότι φαίνεται να απαιτεί τουλάχιστον κατά προσέγγιση φασματική διαχωρισιμότητα των εισακτέων δειγμάτων
description: Acceleration time-histories are used to represent the seismic ground motion and are used as input in the nonlinear dynamic analysis of structures. The generation of artificial accelerograms becomes necessary since there are still not enough records of strong earthquakes at a specific site. The generation of acceleration time histories has led to the development of many different methods based on random process theory. One of the most widely used technique for the simulation of random processes is the spectral representation method. Its key quantity is the power spectrum, which characterizes the random process both in the time - frequency domain. This thesis assesses the performance of a recently proposed method called method of separation for the estimation of evolutionary (time evolving) power spectra using a number of sample functions of the random process characterizing the seismic event. These sample functions are artificial accelerograms generated by the algorithm of Sabetta and Pugliese
Noise correlation spectroscopy of the broken order of a Mott insulating phase
Creators: name: Guarrera, V.
name: Fabbri, N.
name: Fallani, L.
name: Fort, C.
name: van der Stam, K. M. R.
name: Inguscio, M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We use a two-color lattice to break the homogeneous site occupation of an atomic Mott Insulator of bosonic 87Rb. We detect the disruption of the ordered Mott domains via noise correlation analysis of the atomic density distribution after time-of-flight. The appearance of additional correlation peaks evidences the redistribution of the atoms into a strongly inhomogeneous insulating state, in quantitative agreement with the predictions.
Οι θρησκευτικές αντιλήψεις των Υezidis
Creators: name: Γεωργιάδου, Γεωργία Κωνσταντίνου
Publisher: name: Aristotle University of Thessaloniki
Year: 2019
Subjects: Γιαζίντι
Άγγελος - Παγώνι
Σεϊχης Άντι
Yezidis
Angel - Peacock
Sheikh Adi

description: Σκοπός της παρούσας έρευνας είναι να παρουσιάσει αναλυτικά τις θρησκευτικές αντιλήψεις της πίστης των Yezidis,μιας ιδιαίτερης θρησκείας που διαμορφώθηκε το 12ο με 13ο αιώνα στη βόρεια Μεσοποταμία. Πρόκειται για φαινόμενο θρησκευτικού συγκρητισμού και η μελέτη αυτή εξετάζει διεξοδικά τα ιδιαίτερα χαρακτηριστικά της θρησκευτικής κοινότητας, οι πεποιθήσεις της, οι τελετές και τα έθιμα της, οι καθημερινές συνήθειες αναφορικά με τη λατρευτική πρακτική,οι κανόνες συμπεριφοράς και ο τρόπος ζωής της. Η ιδιαιτερότητα του θρησκευτικού αυτού συστήματος έγκειται στην κοινωνική και θρησκευτική ιεραρχία, στην εσωτερική μυστική πίστη, στην προφορική παράδοση και φιλοσοφία,στις απαγορεύσεις,που καλύπτουν πολλές πτυχές της ανθρώπινης σκέψης και δραστηριότητας. Επιπροσθέτως, γίνεται εκτενής λόγος για τη θεϊκή Τριάδα του Υezidism, που αποτελείται από τον Sheikh Adi, τον Άγγελο Παγώνι και τον Sultan Ezid και για το πάνθεον του, που περιλαμβάνει πολλές μυθικές μορφές και προστάτες της καθημερινής ζωής. Τέλος,γίνεται διεξοδική παρουσίαση στις ανά τον κόσμο Υezidis κοινότητες και τον τρόπο αντιμετώπισής τους από τις διάφορες κρατικές αρχές
description: Τhe purpose of this research is to present in detail the religious beliefs of Yezidis, a special religion formed in 12th to 13th century in northern Mesopotamia. It is a phenomenon of religious syncretism and this study examines particularly the specific charateristics of the religious community, its beliefs, rituals and customs, the everyday habits of worship, the rules of behavior and its way of life. The peculiarity of this religious system lies on social and religious hierarchy, inner secret faith, oral tradition and philosophy,prohibitions covering many aspects of human thinking and activity. Additionally, there is extensive talk about the Divine Trinity of Yezidism, which consists of Sheikh Adi, Peacock Angel and Sultan Ezid and his pantheon, which includes many mythical figures and patrons of everyday life.Finally, there is a comprehensive presentation of the Yezidis communities around the world and the way different goverments authorities deal with them
Comment to ``Quantization of FRW spacetimes in the presence of a cosmological constant and radiation''
Creators: name: Amore, Paolo
name: Aranda, Alfredo
name: Cervantes, Mayra
name: Díaz-Cruz, J. L.
name: Fernández, Francisco M.
Publisher: name: arXiv
Year: 2006
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The quantization of the Friedmann-Robertson-Walker spacetime in the presence of a negative cosmological constant was used in a recent paper to conclude that there are solutions that avoid singularities (big bang--big crunch) at the quantum level. We show that a proper study of their model{\sl does not prevent} the occurrence of singularities at the quantum level, in fact the quantum probability of such event is larger than the classical one. Our numerical simulations based on the powerful variational sinc collocation method (VSCM) also show that the precision of the results of that paper is much lower than the 20 significant digits reported by the authors.
description: 7 pages, 3 figures, 2 tables Changes in the figures
The Richmond young writers’ project 1979-1984
Creators: name: Hunter, Jane
Publisher: name: University of British Columbia
Year: 2008

description: Richmond School District successfully implemented in 1978-1984 an innovative approach to the teaching of writing--the writing process. This study sought to determine why teachers participated in developing a new writing curriculum in their schools, what characteristics of the setting promoted these curriculum development practices, and what curriculum leaders did to promote teacher participation in curriculum decision making. Historical evidence for this thes is included interviews with eleven participants in reform, including the curriculum leader with greatest responsibility for its implementation. In addition, various print and manuscript documents provided a basis for interpretation of pertinent events. As policy study this thesis described and analyzed the practices and experiences of the school district that embodied the implementers' values. A single teacher-leader in the district accounted for much of the change in teacher practice. A district-wide emphasis on writing process praxis was further supported by the school board and the district's senior staff. Specific social characteristics of the curriculum development setting, Richmond School District, help account for the adoption of the reform. The study argues for the importance of; (a) selecting the most appropriate innovation for implementation, (b) empowering participants in educational reform, and (c) an effective change agent to inspire participants. Implications for educators and recommendations for further research came from these insights.
Nonlinear non-Hermitian skin effect
Creators: name: Yuce, C.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Mathematical Physics (math-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Distant boundaries in linear non-Hermitian lattices can dramatically change energy eigenvalues and corresponding eigenstates in a nonlocal way. This effect is known as non-Hermitian skin effect (NHSE). Combining non-Hermitian skin effect with nonlinear effects can give rise to a host of novel phenomenas, which may be used for nonlinear structure designs. Here we study nonlinear non-Hermitian skin effect and explore nonlocal and substantial effects of edges on stationary nonlinear solutions. We show that fractal and continuum bands arise in a long lattice governed by a nonreciprocal discrete nonlinear Schrodinger equation. We show that stationary solutions are localized at the edge in the continuum band. We consider a non-Hermitian Ablowitz-Ladik model and show that nonlinear exceptional point disappears if the lattice is infinitely long.
description: to appear in pla
Two-dimensional Lagrangian singularities and bifurcations of gradient lines I
Creators: name: Marelli, G.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Dynamical Systems (math.DS)
subject: Symplectic Geometry (math.SG)
subject: FOS: Mathematics
subject: 37G25, 53D12, 70K60

description: Motivated by mirror symmetry, we consider a Lagrangian fibration $X\to B$ and Lagrangian maps $f:L\hookrightarrow X\to B$, when $L$ has dimension 2, exhibiting an unstable singularity, and study how their caustic changes, in a neighbourhood of the unstable singularity, when slightly perturbed. The integral curves of $\nabla f_x$, for $x\in B$, where $f_x(y)=f(y)-x\cdot y$, called ``gradient lines'', are then introduced, and a study of them, in order to analyse their bifurcation locus, is carried out.
description: 29 pages
Dissolution behavior of sulfur and some metals from spent petroleum catalysts by alkaline solutions
Creators: name: Minhnhan, Le
name: Man Seung, Lee
Publisher: name: Faculty of Geoengineering, Mining and Geology, Wrocław University of Technology, Wrocław
Year: 2019
Subjects: NaOH, sulfur, H2O2, spent petroleum catalyst

description: Physicochemical Problems of Mineral Processing; ISSN 2084-4735
Prevent eavesdropping with bright reference pulses for practical quantum key distribution
Creators: name: Wu, Guang
name: Chen, Jie
name: Li, Yao
name: Xu, Lilin
name: Zeng, Heping
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We analyze the application of bright reference pulses to prevent the photon-number-splitting attack in weak-pulse quantum key distribution. Under the optimal eavesdropping strategy as far as we know, the optimal parameters of bright reference and signal pulses can ensure a secure transmission distance up to 146 km. To realize the quantum key distribution scenario with up-present techniques, we present an experimentally feasible scheme to create a large splitting ratio between bright reference and signal pulses, and to switch the bright reference pulses away from signal pulses to avoid the after-pulse disturbance.
description: 18 pages, 3 figures
Editorial: Introduction to the Issue on Deep Learning for Image/Video Restoration and Compression
Creators: name: Tekalp, A. Murat
name: Covell, Michele
name: Timofte, Radu
name: Dong, Chao
Publisher: name: arXiv
Year: 2021
Subjects: subject: Image and Video Processing (eess.IV)
subject: Machine Learning (cs.LG)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Recent works have shown that learned models can achieve significant performance gains, especially in terms of perceptual quality measures, over traditional methods. Hence, the state of the art in image restoration and compression is getting redefined. This special issue covers the state of the art in learned image/video restoration and compression to promote further progress in innovative architectures and training methods for effective and efficient networks for image/video restoration and compression.
Numerical simulation of the thermal fragmentation process in fullerene C60
Creators: name: Openov, L. A.
name: Podlivaev, A. I.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The processes of defect formation and annealing in fullerene C60 at T=(4000-6000)K are studied by the molecular dynamics technique with a tight-binding potential. The cluster lifetime until fragmentation due to the loss of a C2 dimer has been calculated as a function of temperature. The activation energy and the frequency factor in the Arrhenius equation for the fragmentation rate have been found to be Ea = (9.2 +- 0.4) eV and A = (8 +- 1)10^{19} 1/s. It is shown that fragmentation can occur after the C60 cluster loses its spherical shape. This fact must be taken into account in theoretical calculations of Ea.
description: 12 pages, 3 figures
Magnetic states and spin-glass properties in Bi0.67Ca0.33MnO3: macroscopic ac measurements and neutron scattering
Creators: name: Giot, M.
name: Pautrat, A.
name: Andre, G.
name: Saurel, D.
name: Hervieu, M.
name: Rodriguez-Carvajal, J.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We report on the magnetic properties of the manganite Bi_{1-x}Ca_{x}MnO_3 (x=0.33) at low temperature. The analysis of the field expansion of the ac susceptibility and the observation of aging properties make clear that a spin glass phase appears below T = 39K, in the presence of magnetic order. Neutron scattering shows both magnetic Bragg scattering and magnetic diffusion at small angles, and confirms this coexistence. In contrast to Pr_{1-x}Ca_{x}MnO_3 (x=0.3-0.33) which exhibits a mesoscopic phase separation responsible for a field driven percolation, the glassy and short range ferromagnetic order observed here does not cause colossal magnetoresistance (CMR).
description: accepted in Phys Rev B
Two-dimensional Lagrangian singularities and bifurcations of gradient lines II
Creators: name: Marelli, G.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 37G25, 53D12, 70K60

description: Motivated by mirror symmetry, we consider the Lagrangian fibration $\R^4\to\R^2$ and Lagrangian maps $f:L\hookrightarrow \R^4\to \R^2$, exhibiting an unstable singularity, and study how the bifurcation locus of gradient lines, the integral curves of $\nabla f_x$, for $x\in B$, where $f_x(y)=f(y)-x\cdot y$, changes when $f$ is slightly perturbed. We consider the cases when $f$ is the germ of a fold, of a cusp and, particularly, of an elliptic umbilic.
description: 26 pages
Transcription of "The First Ones"
Creators: name: Parker, Verdena
name: Campbell, Amy
name: Newbold, Lindsey
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2022
Subjects: subject: hup

description: Audio files VP-070309-05 and VP-070309-06a/c: Transcription of "The First Ones" story (file VP-190408-11), preliminary discussion (VP-070309-05) and then from 5:30 to the end of the file (VP-070309-06a/c).
THE EFFECT OF ORGANIZATIONAL JUSTICE ON ORGANIZATIONAL REPUTATION: EMPIRICAL INSIGHTS FROM THE PHARMACEUTICAL CONTEXT
Creators: name: Dr. HAITHAM ALI HIJAZI
name: Dr. SHEHADEH MOFLEH AL-GHARAIBEH
name: Dr. SUZAN SALEH DARWAZEH
name: Dr. JUMANA BASHEER ABU RUMMAN
name: Dr. HOSSAM KORANY
name: NADIA ABDUL QADER ABU KWAIK
Publisher: name: Zenodo
Year: 2023
Subjects: "Organizational Justice", "Organizational Reputation", Pharmaceutical industries, Jordan.

description: Abstract                    

Purpose: This study aimed to identify the effect of applying organizational justice on organizational reputation from the perspective of workers in the pharmaceutical industry in Jordan. Methodology: The study population consisted of 51,000 workers in the pharmaceutical industry, and the sampling and analysis unit consisted of administrative employees with different job titles (11,555). Accordingly, a simple random sample of 387 employees was selected. Findings: The study's findings showed that the aforementioned industry conducts significant organizational justice and has a high level of organizational reputation for this sector from the point of view of its employees. The study also found that there is an effect of the practice of organizational justice on organizational reputation from the viewpoint of workers in the pharmaceutical industry in Jordan. Originality/value: This research examined the impact of organizational justice with its four types (procedural, evaluative, moral, and distributive) on organizational reputation in the pharmaceutical industry, as the four types of organizational justice had not been studied before. Each has been examined individually to see how it affects organizational reputation, which has enriched scientific research in this area.
Exciton transport in amorphous polymers and the role of morphology and thermalisation
Creators: name: Campaioli, Francesco
name: Cole, Jared H.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Understanding the transport mechanism of electronic excitations in conjugated polymers is key to advancing organic optoelectronic applications, such as solar cells, OLEDs and flexible electronics. While crystalline polymers can be studied using solid-state techniques based on lattice periodicity, the characterisation of amorphous polymers is hindered by an intermediate regime of disorder and the associated lack of symmetries. To overcome these hurdles we use a reduced state quantum master equation approach based on the Merrifield exciton formalism. Using this model we study exciton transport in conjugated polymers and its dependence on morphology and temperature. Exciton dynamics consists of a thermalisation process, whose features depend on the relative strength of thermal energy, electronic couplings and disorder, resulting in remarkably different transport regimes. By applying this method to representative systems based on poly(p-phenylene vinylene) (PPV) we obtain insight into the role of temperature and disorder on localisation, charge separation, non-equilibrium dynamics, and experimental accessibility of thermal equilibrium states of excitons in amorphous polymers.
description: 11 pages, 4 figures, 2 tables
A concise and universal method for deriving arbitrary paraxial and non-paraxial cylindrical Gaussian-type light modes
Creators: name: Radożycki, Tomasz
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: A concise method of deriving expressions for Gaussian-like solutions of the paraxial and d'Alembert equations is presented. This method is based on the Hankel transform. Choosing some Gaussian base functions with slight modifications of the prefactor all basic beams of cylindrical character can be easily obtained. This refers to Gaussian, Bessel-Gaussian, modified Bessel-Gaussian, Laguerre-Gaussian and Kummer-Gaussian (i.e., Hypergeometric-Gaussian) beams although potentially other beams can come into play as well. For instance a new type of a beam that can be derived in this way is described through the incomplete gamma function so it may be called a $γ$ beam.
description: 8 pages, 2 figures, ReVTeX
The Knowledge Series Volume One (English)
Creators: name: Myanmar Knowledge Series
Publisher: name: Zenodo
Year: 2024

description: Dedicated to the people of Myanmar

The Knowledge Series research bulletin highlights the primary roles and responsibilities of key institutions—government, political parties, military, and police force—that shape the direction of a nation. This bulletin also underscores the ethical responsibilities these institutions must uphold in serving the people.

We hope that readers, whether familiar with these concepts or not, gain valuable insights and apply this knowledge to contribute to the nation’s development. By doing so, each individual can play a meaningful role in building the future as responsible citizens.

Editorial Team

myanmarknowledgeseries@gmail.com
Towards understanding the power of quantum kernels in the NISQ era
Creators: name: Wang, Xinbiao
name: Du, Yuxuan
name: Luo, Yong
name: Tao, Dacheng
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Machine Learning (cs.LG)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: A key problem in the field of quantum computing is understanding whether quantum machine learning (QML) models implemented on noisy intermediate-scale quantum (NISQ) machines can achieve quantum advantages. Recently, Huang et al. [Nat Commun 12, 2631] partially answered this question by the lens of quantum kernel learning. Namely, they exhibited that quantum kernels can learn specific datasets with lower generalization error over the optimal classical kernel methods. However, most of their results are established on the ideal setting and ignore the caveats of near-term quantum machines. To this end, a crucial open question is: does the power of quantum kernels still hold under the NISQ setting? In this study, we fill this knowledge gap by exploiting the power of quantum kernels when the quantum system noise and sample error are considered. Concretely, we first prove that the advantage of quantum kernels is vanished for large size of datasets, few number of measurements, and large system noise. With the aim of preserving the superiority of quantum kernels in the NISQ era, we further devise an effective method via indefinite kernel learning. Numerical simulations accord with our theoretical results. Our work provides theoretical guidance of exploring advanced quantum kernels to attain quantum advantages on NISQ devices.
Photon distribution amplitudes and light-cone wave functions in chiral quark models
Creators: name: Dorokhov, A. E.
name: Broniowski, W.
name: Arriola, E. Ruiz
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The leading- and higher-twist distribution amplitudes and light-cone wave functions of real and virtual photons are analyzed in chiral quark models. The calculations are performed in the nonlocal quark model based on the instanton picture of QCD vacuum, as well as in the spectral quark model and the Nambu--Jona-Lasinio model with the Pauli-Villars regulator, which both treat interaction of quarks with external fields locally. We find that in all considered models the leading-twist distribution amplitudes of the real photon defined at the quark-model momentum scale are constant or remarkably close to the constant in the $x$ variable, thus are far from the asymptotic limit form. The QCD evolution to higher momentum scales is necessary and we carry it out at the leading order of the perturbative theory for the leading-twist amplitudes. We provide estimates for the magnetic susceptibility of the quark condensate $χ_m$ and the coupling $f_{3γ}$, which in the nonlocal model turn out to be close to the estimates from QCD sum rules. We find the higher-twist distribution amplitudes at the quark model scale and compare them to the Wandzura-Wilczek estimates. In addition, in the spectral model we evaluate the distribution amplitudes and light-cone wave functions of the $ρ$-meson.
description: 24 pages, 15 figures
DandeLiion v1: An extremely fast solver for the Newman model of lithium-ion battery (dis)charge
Creators: name: Korotkin, Ivan
name: Sahu, Smita
name: O'Kane, Simon
name: Richardson, Giles
name: Foster, Jamie M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: DandeLiion (available at dandeliion.com) is a robust and extremely fast solver for the Doyle Fuller Newman (DFN) model, the standard electrochemical model for (dis)charge of a planar lithium-ion cell. DandeLiion conserves lithium, uses a second order spatial discretisation method (enabling accurate computations using relatively coarse discretisations) and is many times faster than its competitors. The code can be used `in the cloud' and does not require installation before use. The difference in compute time between DandeLiion and its commercial counterparts is roughly a factor of 100 for the moderately-sized test case of the discharge of a single cell. Its linear scaling property means that the disparity in performance is even more pronounced for bigger systems, making it particularly suitable for applications involving multiple coupled cells. The model is characterised by a number of phenomenological parameters and functions, which may either be provided by the user or chosen from DandeLiion's library. This library contains data for the most commonly used electrolyte (LiPF6) and a number of common active material chemistries including graphite, lithium iron phosphate (LFP), nickel cobalt aluminium (NCA), and a variant of nickel cobalt manganese (NMC).
Surfaces of revolution in the Heisenberg group and the spectral generalization of the Willmore functional
Creators: name: Berdinsky, Dmitry A.
name: Taimanov, Iskander A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics

description: We study the generalization of the Willmore functional for surfaces in the three-Heisenberg group. Its construction is based on the spectral theory of the Dirac operator coming to the Weierstrass representation of surfaces (see math.DG/0503707). By using surfaces of revolution we demonstrate that it resembles the Willmore functional for surfaces in the Euclidean space in many geometrical respects. We also observe the relation of these functionals to the isoperimetric problem.
description: 21 pages, some typos and references corrected
Το είδος του αφηγητή σε εικονογραφημένα παιδικά βιβλία με θέμα το προσφυγικό και οι απόψεις των παιδιών
Creators: name: Παναγιωτίδης, Κωνσταντίνος Βασιλείου
Publisher: name: Aristotle University of Thessaloniki
Year: 2019
Subjects: Αφηγητής
Φωνή
Προτιμήσεις των παιδιών
Narrator
Voice
Children’s preferences

description: Σκοπός της διατριβής ήταν η μελέτη των ειδών του αφηγητή σε εικονογραφημένα παιδικά βιβλία με θέμα το προσφυγικό. Σχολιάστηκε, σε μια ομάδα είκοσι εικονογραφημένων βιβλίων, το πρόσωπο του αφηγητή και, στη συνέχεια, ομαδοποιήθηκαν τα παραπάνω βιβλία σε δύο κύριες κατηγορίες, ανάλογα αν είναι γραμμένα σε πρωτοπρόσωπη ή τριτοπρόσωπη αφήγηση. Ακόμη διερευνήθηκαν οι προτιμήσεις των παιδιών Δημοτικού σχολείου αναφορικά με το πρόσωπο του αφηγητή σε εικονογραφημένα παιδικά βιβλία με θέμα τον πρόσφυγα. Η έρευνα έλαβε χώρα σε δημοτικά σχολεία και, με τη χρήση ερωτηματολογίων, καταγράφηκαν και σχολιάστηκαν οι προτιμήσεις των παιδιών στο πρόσωπο του αφηγητή. Καταγράφηκαν, επίσης, οι προτιμήσεις των παιδιών ανάλογα με τον τόπο κατοικίας τους και το φύλο τους
description: The aim of the thesis was to study the species of the narrator in illustrated children's books on the subject of refugee. Commented, in a group of twenty illustrated books, the face of the narrator, and then grouped the above books into two main categories, depending on whether they are written in a first or third-person narrative. The preferences of primary school children in relation to the face of the narrator were explored in illustrated children's books on refugee. The survey took place in elementary schools and, using questionnaires, the children's preferences were recorded and commented on the face of the narrator. The preferences of the children according to their place of residence and gender were also recorded
Causal Structure of a recent Loop Quantum Gravity Black Hole Collapse Model
Creators: name: Münch, Johannes
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The causal structure of the recent loop quantum gravity black hole collapse model [1] is analysed. As the spacetime is only approximately diffeomorphism invariant up to powers of $\hbar$, it is not straight forwardly possible to find global conformally compactified coordinates and to construct the Penrose diagram. Therefore, radial in- and outgoing light rays are studied to extract the causal features and sketch a causal diagram. It was found that the eternal metric [2], which is the vacuum solution of the collapse model, has a causal horizon. However, in the collapsing case light rays travel through matter to causally connect the regions in- and outside the horizon -- the causal horizon is not present in the collapsing scenario. It is worked out that this is related to the shock wave and spacetime discontinuity, which allows matter travelling super-luminal along a space-like trajectory from the vacuum point of view, but remaining time-like from the matter perspective. The final causal diagram is a compact patch of a Reissner-Nordström causal diagram. Further, possibilities of a continuous matter collapse with only time-like evolution are studied. It was found that the time-reversed vacuum metric is also a solution of the dynamical equations and a once continuously differentiable matching of the vacuum spacetime across the minimal radius is possible. This allows an everywhere continuous and time-like collapse process at the cost of an infinite extended causal diagram. This solution is part of an infinitely extended eternal black hole solution with a bounce, whose global extension is constructed. Due to the analysis of radial light rays, it is possible to sketch causal diagrams of these spacetimes.
description: 28 pages, 6 figures. Version accepted for publication in PRD
Dynamic and static limitation in multiscale reaction networks, revisited
Creators: name: Gorban, A. N.
name: Radulescu, O.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: The concept of limiting step gives the limit simplification: the whole network behaves as a single step. However, in its simplest form this idea is applicable only to the simplest linear cycles in steady states. For such the simplest cycles the nonstationary behaviour is also limited by a single step, but not the same step that limits the stationary rate. We develop a general theory of static and dynamic limitation for all linear multiscale networks. New estimates of eigenvectors for diagonally dominant matrices are used. Multiscale ensembles of reaction networks with well separated constants are introduced and typical properties of such systems are studied. For any given ordering of reaction rate constants the explicit approximation of steady state, relaxation spectrum and related eigenvectors ("modes") is presented. The obtained multiscale approximations that we call "dominant systems" are computationally cheap and robust. These dominant systems can be used for direct computation of steady states and relaxation dynamics, especially when kinetic information is incomplete, for design of experiments and mining of experimental data, and could serve as a robust first approximation in perturbation theory or for preconditioning.
description: Extended version with new examples. Accepted for publication in Adv. Chem. Eng
Measuring distance between quantum states on a quantum computer
Creators: name: Kuzmak, A. R.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We propose protocols for determining the distances in Hilbert space between pure and mixed quantum states prepared on a quantum computer. In the case of pure quantum states, the protocol is based on measuring the square of modulus of scalar product between certain states. Determination of the distance between mixed quantum states is reduced to measuring the squares of modules of scalar products between all pure states included in the mixed states. In addition, we develop a protocol that allows one to determine the speed of evolution of the spin system simulated by a quantum computer. These protocols we apply to measure distances and speeds of evolution of different quantum systems implemented on the ibmq-santiago quantum computer.
description: 9 pages, 11 figures