cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The Axion Mass from 5D Small Instantons
Creators: name: Gherghetta, Tony
name: Khoze, Valentin V.
name: Pomarol, Alex
name: Shirman, Yuri
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We calculate a new contribution to the axion mass that arises from gluons propagating in a 5th dimension at high energies. By uplifting the 4D instanton solution to five dimensions, the positive frequency modes of the Kaluza-Klein states generate a power-law term in the effective action that inversely grows with the instanton size. This causes 5D small instantons to enhance the axion mass in a way that does not spoil the axion solution to the strong CP problem. Moreover this enhancement can be much larger than the usual QCD contribution from large instantons, although it requires the 5D gauge theory to be near the non-perturbative limit. Thus our result suggests that the mass range of axions (or axion-like particles), which is important for ongoing experimental searches, can depend sensitively on the UV modification of QCD.
description: 22 pages, 4 figures
Σεισμική διακινδύνευση οικιστικών συνόλων: Ανάπτυξη μοντέλου στοιχείων υπό διακινδύνευση για το κτιριακό απόθεμα του Ληξουρίου Κεφαλονιάς - Εκτίμηση σεισμικής διακινδύνευσης με χρήση του λογισμικού ΟpenQuake engine και σύγκριση με πραγματικές βλάβες κατά τους πρόσφατους ισχυρούς σεισμούς
Creators: name: Κακκάβα, Αθανασία Απόστολου
Publisher: name: Aristotle University of Thessaloniki
Year: 2021
Subjects: σεισμική επικινδυνότητα
σεισμική διακινδύνευση
στοιχεία υπό διακινδύνευση
seismic hazard
seismic risk
exposure model

description: Η παρούσα διπλωματική εργασία πραγματεύεται την εκτίμηση της σεισμικής επικινδυνότητας και σεισμικής διακινδύνευσης της πόλης του Ληξουρίου. Στο πλαίσιο αυτό αναπτύχθηκε ένα μοντέλο υπό διακινδύνευση στοιχείων για το κτιριακό απόθεμα του Ληξουρίου και οι αναλύσεις πραγματοποιήθηκαν για δύο σεισμικά σενάρια. Τα υπό διακινδύνευση στοιχεία αποτελούνται από κτίρια με χρήση κατοικίας και όλες οι απαραίτητες πληροφορίες και δεδομένα σχετικά με αυτά ελήφθησαν από την καταγραφή που πραγματοποιήθηκε μέσω Google Maps και Street View με αεροφωτογραφίες και στη συνέχεια συγκρίθηκαν με αυτά που ελήφθησαν από την απογραφή του 2011 που πραγματοποιήθηκε από την Ελληνική Στατιστική Αρχή. Τα κτίρια αυτά ταξινομήθηκαν σε τυπολογίες σύμφωνα με το σύστημα ταξινόμησης που προτείνεται από την ερευνητική κοινότητα Global Earthquake Model (GEM). Για να γίνουν οι αναλύσεις χρησιμοποιήθηκαν οι καμπύλες τρωτότητας σύμφωνα με Martins & Silva (2020). Αρχικά, μελετάται η σεισμική επικινδυνότητα και διακινδύνευση για το σενάριο των σεισμών της Κεφαλονιάς 2014 και στη συνέχεια πραγματοποιείται μια πιθανολογική ανάλυση σεισμικής διακινδύνευσης για την περιοχή μελέτης. Τέλος, εξάγονται τα αποτελέσματα με τη μορφή διαγραμμάτων, γίνεται η σύγκρισή μεταξύ τους, καθώς και με πραγματικές καταγραφές και εξάγονται τα αντίστοιχα συμπεράσματα
description: This present diploma thesis examines the subject of seismic hazard and seismic risk of the city of Lixouri. Thus, an exposure model for the residential buildings of Lixouri is developed and th analyses were made for two seismic scenarios. All the necessary information and data regarding the residential buildings were obtained from the recording made through Google Maps and Street View with aerial photographs and then compared with those obtained from the 2011 census made by the Hellenic Statistical Authority. The building taxonomy system of Global Earthquake Model (GEM) is used, in order to classify the buildings into categories. In order to perform the analyses, the fragility and vulnerability curves proposed by Martins & Silva (2020) were used. Seismic hazard and risk analyses are conducted for the earthquake of Kefalonia 2014. A classical probabilistic analysis is, also, conducted for the city of Kefalonia. Finally, the results are presented through diagrams, they are compared with real recordings of the earthquake and the conclusions are demonstrated
Control of polymorphism during epitaxial growth of hyperferroelectric candidate LiZnSb on GaSb (111)B
Creators: name: Du, Dongxue
name: Strohbeen, Patrick J.
name: Paik, Hanjong
name: Zhang, Chenyu
name: Genser, Konrad
name: Rabe, Karin M.
name: Voyles, Paul M.
name: Schlom, Darrell G.
name: Kawasaki, Jason K.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: A major challenge for ferroelectric devices is the depolarization field, which competes with and often destroys long-range polar order in the limit of ultrathin films. Recent theoretical predictions suggest a new class of materials, termed hyperferroelectics, that should be robust against the depolarization field and enable ferroelectricity down to the monolayer limit. Here we demonstrate the epitaxial growth of hexagonal LiZnSb, one of the hyperferroelectric candidate materials, by molecular-beam epitaxy on GaSb (111)B substrates. Due to the high volatility of all three atomic species, we find that LiZnSb can be grown in an adsorption-controlled window, using an excess zinc flux. Within this window, the desired polar hexagonal phase is stabilized with respect to a competing cubic polymorph, as revealed by X-ray diffraction and transmission electron microscopy measurements. First-principles calculations show that for moderate amounts of epitaxial strain and moderate concentrations of Li vacancies, the cubic LiZnSb phase is lower in formation energy than the hexagonal phase, but only by a few meV per formula unit. Therefore we suggest that kinetics plays a role in stabilizing the desired hexagonal phase at low temperatures. Our results provide a path towards experimentally demonstrating ferroelectricity and hyperferroelectricity in a new class of ternary intermetallic compounds.
description: The following article has been submitted to the Journal of Vacuum Science and Technology. After it is published, it will be found at https://avs.scitation.org/journal/jvb
The long-term steady motion of Saturn's Hexagon and the stability of its enclosed jet-stream under seasonal changes
Creators: name: Sánchez-Lavega, A.
name: del Río-Gaztelurrutia, T.
name: Hueso, R.
name: Pérez-Hoyos, S.
name: García-Melendo, E.
name: Antuñano, A.
name: Mendikoa, I.
name: Rojas, J. F.
name: Lillo, J.
name: Barrado-Navascués, D.
name: Gomez-Forrellad, J. M.
name: Go, C.
name: Peach, D.
name: Barry, T.
name: Milika, D. P.
name: Nicholas, P.
name: Wesley, A.
name: Team, the IOPW-PVOL
Publisher: name: arXiv
Year: 2024
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We investigate the long-term motion of Saturn's North-Pole Hexagon and the structure of its associated eastward jet, using Cassini ISS and ground-based images from 2008 to 2014. We show that both are persistent features that have survived the long polar night, the jet profile remaining essentially unchanged. During those years the hexagon vertices showed a steady rotation period of 10 hr 39 min 23.01 $\pm$ 0.01 s. Analysis of Voyager 1 and 2 (1980-1981) and HST and ground-based (1990-91) images shows a period shorter by 3.5s, due to the presence at the time of a large anticyclone. We interpret the hexagon as a manifestation of a vertically trapped Rossby wave on the polar jet and, because of their survival and unchanged properties under the strong seasonal variations in insolation, we propose that both hexagon and jet are deep-rooted atmospheric features that could reveal the true rotation of the planet Saturn.
Guided search for desired functional responses via Bayesian optimization of generative model: Hysteresis loop shape engineering in ferroelectrics
Creators: name: Kalinin, Sergei V.
name: Ziatdinov, Maxim
name: Vasudevan, Rama K.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: Advances in predictive modeling across multiple disciplines have yielded generative models capable of high veracity in predicting macroscopic functional responses of materials. Correspondingly, of interest is the inverse problem of finding the model parameter that will yield desired macroscopic responses, such as stress-strain curves, ferroelectric hysteresis loops, etc. Here we suggest and implement a Gaussian Process based methods that allow to effectively sample the degenerate parameter space of a complex non-local model to output regions of parameter space which yield desired functionalities. We discuss the specific adaptation of the acquisition function and sampling function to make the process efficient and balance the efficient exploration of parameter space for multiple possible minima and exploitation to densely sample the regions of interest where target behaviors are optimized. This approach is illustrated via the hysteresis loop engineering in ferroelectric materials, but can be adapted to other functionalities and generative models. The code is open-sourced and available at [github.com/ramav87/Ferrosim].
description: Update title to match the journal one
Giant spin-orbit splitting in a HgTe quantum well
Creators: name: Gui, Y. S.
name: Becker, C. R.
name: Dai, N.
name: Liu, J.
name: Qiu, Z. J.
name: Novik, E. G.
name: Schaefer, M.
name: Shu, X. Z.
name: Chu, J. H.
name: Buhmann, H.
name: Molenkamp, L. W.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We have investigated beating patterns in Shubnikov-de Haas oscillations for HgTe/Hg_{0.3}Cd_{0.7}Te(001) quantum wells with electron densities of 2 to 3 X 10^{12} cm^{-2}. Up to 12 beating nodes have been observed at magnetic fields between 0.9 and 6 T. Zero magnetic field spin-orbit splitting energies up to 30 meV have been directly determined from the node positions as well as from the intersection of self-consistently calculated Landau levels. These values, which exceed the thermal broadening of Landau levels, k_B T, at room temperature, are in good agreement with Rashba spin-orbit splitting energies calculated by means of an 8 X 8 kp Kane model. The experimental Shubnikov-de Haas oscillations are also in good agreement with numerical simulations based on this model.
description: 5 pages, 6 figures
Διαφορές και διακρίσεις: Η νοηματοδότηση των όρων στη χριστιανική παιδαγωγική
Creators: name: Καλοτάτου, Δέσποινα Ανέστη
Publisher: name: Aristotle University of Thessaloniki
Year: 2021
Subjects: Διαφορές
Διακρίσεις
Χριστιανική αγωγή
Differences
Discriminations
Christian education

description: Κάθε ανθρώπινο πρόσωπο είναι μοναδικό, με διακριτή προσωπικότητα και αποστολή. Ο καθένας διαμορφώνει την ταυτότητά του, την θρησκευτική του πίστη, τις αξίες και τις πεποιθήσεις του με ελευθερία μέσα σε μια κοινωνία προσώπων, όχι αποξενωμέ-νων ατόμων, στην οποία ζούνε άνθρωποι με διαφορετικό φύλο, σωματική κατάσταση και πολιτισμό σαν μία κοινότητα. Ο Χριστιανισμός προβάλλει την αγαπητική κοινωνία της παγκοσμιότητας, έναντι της παγκοσμιοποιημένης κοινωνίας, που καθιστά τους αν-θρώπους πιόνια σε ένα παιχνίδι δύναμης. Οι διαφορές μεταξύ των ανθρώπων δεν απο-τελούν έδαφος για να γίνονται διακρίσεις, δηλαδή μεροληπτικές συμπεριφορές ενα-ντίων των συνανθρώπων μας. Όλοι οι άνθρωποι έχουν την ίδια αξία ως παιδιά του Θεού, ανεξάρτητα από τις διαφορές μεταξύ τους. Οι διακρίσεις καταδικάζονται από τη χριστιανική πίστη, όπως φαίνεται μέσα από την Παλαιά και την Καινή Διαθήκη και τους Πατέρες της Εκκλησίας. Η εκπαίδευση, και συγκεκριμένα η χριστιανική αγωγή μέσα από το μάθημα των θρησκευτικών, μπορεί να συμβάλλει στην ενίσχυση των διαφορών και την κατάργηση των διακρίσεων μεταξύ των ανθρώπων, με την αντιμε-τώπιση του κάθε μαθητή από τον καθηγητή ως ελεύθερο και ισότιμο πρόσωπο, την καλλιέργεια της κριτικής σκέψης, και τη χρήση κατάλληλων διδακτικών μεθόδων
description: Each human person is unique, with a distinct personality and mission. Each one of us is forming his identity, his values and his beliefs with freedom within a society of per-sons, not estranged individuals, where people with different gender, health levels and civilization live as a community. Christianity is suggesting a global society that is char-acterized of love, instead of the globalized society that renders humans pawns in a power game. Discriminations, meaning prejudiced behaviors against our fellowmen, cannot be excused on the grounds of differences. All humans have the same value as children of God, regardless of their differences. Discriminations are condemned by Christian faith, as evidenced through the Old and the New Testament and the Church Fathers. Education, especially Christian education in the religious education school lesson, can contribute to strengthening differences and eliminating discriminations be-tween people, through the professor’s behavior towards every student as a free person of the same value, the cultivation of critical thinking and the use of suitable teaching methods
Exchange anisotropy and the dynamic phase transition in thin ferromagnetic Heisenberg films
Creators: name: Jang, Hyunbum
name: Grimson, Malcolm J.
name: Hall, Carol K.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Monte Carlo simulations have been performed to investigate the dependence of the dynamic phase behavior on the bilinear exchange anisotropy of a classical Heisenberg spin system. The system under consideration is a planar thin ferromagnetic film with competing surface fields subject to a pulsed oscillatory external field. The results show that the films exhibit a single discontinuous dynamic phase transition (DPT) as a function of the anisotropy of the bilinear exchange interaction in the Hamiltonian. Furthermore there is no evidence of stochastic resonance (SR) associated with the DPT. These results are in marked contrast to the continuous DPT observed in the same system as a function of temperature and applied field strength for a fixed bilinear exchange anisotropy.
description: 11 pages including 3 figure pages; submitted to PRE
Two-temperature radiative hot accretion flow around neutron stars
Creators: name: Bu, De-Fu
name: Qiao, Erlin
name: Yang, Xiao-Hong
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Numerical simulations of radiative two-temperature hot accretion flows (HAFs) around Neutron stars (NSs) are performed. We assume that all of the energy carried by the HAF around a NS will be thermalized and radiated out at the surface of the NS. The thermal photons will propagate outwards radially and cool the HAF vis Comptonization. We define $\dot m$ as the mass accretion rate at the surface of the central object in unit of Eddington accretion rate ($\dot M_{\rm Edd}=10L_{\rm Edd}/c^2$, with $L_{\rm Edd}$ and $c$ being Eddington luminosity and speed of light, respectively). When $\dot m$ is lower than $\sim 10^{-4}$, the cooling of the HAF is not important and outflows are very strong. When $\dot m > \sim 10^{-3}$, cooling becomes important and outflows are significantly weak. In the range $10^{-4} < \dot m < 10^{-3}$, the HAFs transients from a strong outflow phase to a very weak outflow phase with increase of $\dot m$. The properties of the HAF around a NS are also compared to those of the HAF around a BH. We find that with a similar $\dot m$, the dynamical properties of the HAF around a NS are quite similar as those of the HAF around a BH. However, the emitted spectrum of a HAF around a NS can be quite different from that of a HAF around a BH due to the presence of a thermal soft X-ray component coming from the surface of the NS.
description: 12 pages, 4 figures, accepted by ApJ
A new edge betweenness measure using a game theoretical approach: an application to hierarchical community detection
Creators: name: Gómez, Daniel
name: Castro, Javier
name: Gutiérrez, Inmaculada
name: Espínola, Rosa
Publisher: name: arXiv
Year: 2024
Subjects: subject: Social and Information Networks (cs.SI)
subject: Statistics Theory (math.ST)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics
subject: G.3
subject: 91A, 91B82, 62, 65K

description: In this paper we formally define the hierarchical clustering network problem (HCNP) as the problem to find a good hierarchical partition of a network. This new problem focuses on the dynamic process of the clustering rather than on the final picture of the clustering process. To address it, we introduce a new ierarchical clustering algorithm in networks, based on a new shortest path betweenness measure. To calculate it, the communication between each pair of nodes is weighed by he importance of the nodes that establish this communication. The weights or importance associated to each pair of nodes are calculated as the Shapley value of a game, named as the linear modularity game. This new measure, (the node-game shortest path betweenness measure), is used to obtain a hierarchical partition of the network by eliminating the link with the highest value. To evaluate the performance of our algorithm, we introduce several criteria that allow us to compare different dendrograms of a network from two point of view: modularity and homogeneity. Finally, we propose a faster algorithm based on a simplification of the node-game shortest path betweenness measure, whose order is quadratic on sparse networks. This fast version is competitive from a computational point of view with other hierarchical fast algorithms, and, in general, it provides better results.
description: 29 pages
The Economic Impact of Alternative Policies on the Illinois Grain Marketing System
Creators: name: Harris, James M.
name: Baldwin, E. Dean
name: Hill, Lowel D.
name: Worley, Tom
name: Harris, James M.
name: Baldwin, E. Dean
name: Hill, Lowel D.
name: Worley, Tom
Publisher: name: Unknown
Year: 1977
Subjects: subject: Marketing
subject: FOS: Economics and business

description: The national grain marketing system is in a state of transition. Changes in the methods of production and harvesting grain have improved yields and shortened the time required for harvesting grain (Jones, Sharp, and Baldwin; Penn, pp. 119-129). Specialization in grain or livestock production, and increases in foreign demand have caused more grain to gravitate through the marketing channels (Penn, pp. 119-129; Stallings, Harris, Sappington). Transportation rates are increasing for all modes, rail abandonment of branch lines is being accelerated, the rural road system is in disrepair, and waterways and ports are being altered (Fedeler and Heady; Rudel and Payne). All of these changes increase the pressure on the marketing system and increase the demand for specialized marketing services.
Phosphorus sorption onto selected structured porous substrates
Creators: name: Saki, Hermin
Publisher: name: Universität Rostock
Year: 2020
Subjects: subject: 630 Agriculture

description: Phosphorus (P) is an essential nutrient controlling plant growth and it is fundamental for the productivity of agricultural ecosystems; however, excess P in an environment causes eutrophication. Long-term accumulation of P in soils may cause environmental problems for decades even after reducing the anthropogenic P input into agro-ecosystems. A better understanding of the processes and characteristics that influence P adsorption, desorption, and solute transport in porous media is helping in assessing the availability of P for a sustainable agricultural production and productivity.
CENTRAL PLANNING IN THE U. S. GRAIN EXPORT INDUSTRY
Creators: name: Soth, Lauren
name: Soth, Lauren
Publisher: name: Unknown
Year: 1977
Subjects: Crop Production/Industries

description: The designers of this symposium chose their words admirably -- Public Vs. Private Control of U. S. Grain Exports. The policy choice is truly between public and private control, not between government control and some unseen hand of a mythical free market. The subtopic assigned to me -- Central Planning in the ~~ U. S. grain export Industry -- also faces reality. Grain exports in the future will embody considerable planning; the question is where the planning will be performed.
Description of a new species of mosquito, Aedes (Ochlerotatus) arundinariae (Diptera: Culicidae) from the Chatham Islands, New Zealand
Creators: name: Kasper, Julia
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: 69999 Biological Sciences not elsewhere classified
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: Plant Biology

description: A new mosquito species from the Chatham Islands Aedes (Ochlerotatus) arundinariae, previously misidentified as Ae. (Nothoskusea) chathamicus (Dumbleton, 1962), is described from females only as New Zealand’s 13th endemic mosquito species. The new species has been known from a few specimens for more than ten years. It has not been found since, despite further collecting effort. Aedes (Och.) arundinariae sp. nov. is easily recognised by a distinctive checked pattern of scales on sternites 3–7. Previous confusion about the habitat preferences of Aedes (Noth.) chathamicus and the new species is clarified, with the former being found in coastal localities and the new species found inland. Author Zoobank registration number: A16AF6F4-2DA7-486C-BFD9-23D476ED3E5E This Paper Zoobank registration number: 293A6081-429D-42D9-A865-55948BBAFE86
Η αναζήτηση των δωρεών μεταξύ συζύγων: Ανατροπή των δωρεών λόγω αχαριστίας, έλλειψης δικαιοπρακτικού θεμελίου και συμβολής του δωρητή στην επαύξηση (1400 ΑΚ) υπό το πρίσμα της δικαστηριακής πρακτικής
Creators: name: Κούκου Αικατερίνη-Μαρία Δημητρίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2021
Subjects: Δωρεές μεταξύ συζύγων
Ανατροπή
Νομολογιακή μεταχείριση
Donation between spouses
Revocation of donations
Case Law

description: Αντικείμενο της παρούσας διπλωματικής αποτελεί η θεωρητική και νομολογιακή αντιμετώπιση της αναζήτησης των δωρεών που καταρτίζονται μεταξύ συζύγων. Στόχος της παρούσας μελέτης είναι αρχικά να εντοπιστούν οι δυνατότητες ανατροπής των εν λόγω δωρεών και να αναδειχθεί η θεωρητική και νομολογιακή τους αντιμετώπιση. Ειδικότερα στην υπό κρίση μελέτη παρουσιάζονται οι νομικές βάσεις στις οποίες δύναται να θεμελιωθεί η ανατροπή της δωρεάς και συγκεκριμένα ανάκληση της δωρεάς (505 ΑΚ), ανατροπή του δικαιοπρακτικού θεμελίου της δωρεάς, ήτοι του έγγαμου βίου (288 ΑΚ) είτε αναζήτηση της δωρεάς ως συμβολή στην επαύξηση της περιουσίας του δωρεοδόχου (1400 παρ. 3 ΑΚ). Η τελευταία επιλογή έχει διχάσει θεωρία και νομολογία, με αποτέλεσμα στην υπό κρίση μελέτη να γίνεται ιδιαίτερη αναφορά στη διάταξη του άρθρου 1400 παρ. 3 αναφορικά με τον υπολογισμό ή την εξαίρεση των δωρεών μεταξύ συζύγων στην τελική περιουσία του δωρεοδόχου. Προκειμένου μάλιστα να αναδειχθεί η προβληματική αντιμετώπιση του ζητήματος και η ανασφάλεια δικαίου που έχει δημιουργηθεί επιχειρήθηκε πλήρης αποδελτίωση της νομολογίας
description: This thesis focuses on the theoretical and case law research regarding the donations between spouses. First of all this study examines the legal basis on which the donation can be revoked by the donor and specifically the legal grounds of ingratitude (Article 505 of the Greek Civil Law), subsequent absence of the legal basis of the donation, which is the marriage itself (Article 288 of the Greek Civil Law) and as a claim to participate in the other’s spouse property after the dissolution of the marriage (Article 1400 par. 3 of the Greek Civil Law). Since this last option is controversial on both theory and case law, this study focuses on the aforementioned issue; whether the marital donations are taken into consideration for the estimation of each spouse’s property which leads to different results for the revocation. For the issues addressed on this study a thorough overview of the case law was attempted aiming not only on a coherent outline of the different legal opinions but also on the formation of a solid legal deduction
EFFECTS OF CURRENCY ADJUSTMENTS GIVEN FREE TRADE AND TRADE RESTRICTIONS
Creators: name: Bredahl. Maury, E.
name: Womack, Abner W.
name: Bredahl. Maury, E.
name: Womack, Abner W.
Publisher: name: Unknown
Year: 1977
Subjects: International Relations/Trade

description: This paper measures the theoretical impact of exchange rate changes on equilibrium price and quantity. Reduced form impacts (changes in equilibrium values) are restated for the familiar two country-one commodity free trade model. The free trade model is then modified to encompass the trade restrictions of the European Economic Community and reduced form impacts are determined. The results of the free trade model and restricted model are compared.
Configuration of the magnetosome chain: a natural magnetic nanoarchitecture
Creators: name: Orue, I.
name: Marcano, L.
name: Bender, P.
name: García-Prieto, A.
name: Valencia, S.
name: Mawass, M. A.
name: Gil-Cartón, D.
name: Venero, D. Alba
name: Honecker, D.
name: García-Arribas, A.
name: Barquín, L. Fernández
name: Muela, A.
name: Fdez-Gubieda, M. L.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Magnetospirillum gryphiswaldense is a microorganism with the ability to biomineralize magnetite nanoparticles, called magnetosomes, and arrange them into a chain that behaves like a magnetic compass. Rather than straight lines, magnetosome chains are slightly bent, as evidenced by electron cryotomography. Our experimental and theoretical results suggest that due to the competition between the magnetocrystalline and shape anisotropies, the effective magnetic moment of individual magnetosomes is tilted out of the [111] crystallographic easy axis of magnetite. This tilt does not affect the direction of the chain net magnetic moment, which remains along the [111] axis, but explains the arrangement of magnetosomes in helical-like shaped chains. Indeed, we demonstrate that the chain shape can be reproduced by considering an interplay between the magnetic dipolar interactions between magnetosomes, ruled by the orientation of the magnetosome magnetic moment, and a lipid/protein-based mechanism, modeled as an elastic recovery force exerted on the magnetosomes.
title: Effects of Synchronizing the Hourly Release of Energy and Nitrogen in the Rumen on the Metabolism and Performance of Growing and Lactating Sheep.
Creators: name: Witt, Matthew Wyndham
Publisher: name: The Open University
Year: 1999

description: The combinations of rate and extent of carbohydrate and nitrogen (N) release in the rumen on microbial protein synthesis and the production and metabolism of growing and lactating sheep was studied. In trial one the rate of release of organic matter (OM) and N in the rumen for 14 feed stuffs was characterised. The chemical composition and degradation characteristics varied between ingredients and also between batches of the same feed stuff. Using this data four diets were formulated and offered to growing lambs during experiments two, three and four. The diets were predicted to supply similar levels of metabolisable nutrients to the host, but differ in their predicted degree of synchrony of OM and N release in the rumen. Diets were offered at a restricted level during trials two and three to male lambs and ad libitum during trial four to ewe lambs. Rations were slow energy and synchronous, slow energy and asynchronous, fast energy and synchronous and fast energy and asynchronous. It was concluded from experiment two that there was no effect of hourly rumen synchrony on N retention however there were indications that there were differences in microbial growth and whole body energy metabolism. Trial three evaluated the rations for lamb growth rate, growth efficiency and carcass characteristics. It was concluded that diets supplying a synchronous release of energy and N to the rumen increased growth rates and growth efficiency of lambs, and that this may be due to differences in energy metabolism. It was concluded after experiment four that a synchronous release of energy and N in the rumen increased feed conversion efficiency of lambs, but not as a result of increased carcass weight. The aim of experiment five was to assess rumen synchrony on milk production and feed intake of Friesland ewes. Three diets were formulated to be synchronous, intermediate and asynchronous. It was concluded that rumen synchrony may offer a method to manipulate milk quality, and there were indications of differences in energy metabolism.
A Method towards the Systematic Architecting of Functionally Safe Automated Driving -- Leveraging Diagnostic Specifications for FSC design
Creators: name: Mohan, Naveen
name: Törngren, Martin
name: Behere, Sagar
Publisher: name: arXiv
Year: 2019
Subjects: subject: Systems and Control (eess.SY)
subject: Robotics (cs.RO)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: With the advent of ISO 26262 there is an increased emphasis on top-down design in the automotive industry. ISO 26262 lacks detailed requirements for its various constituent phases. The lack of guidance becomes evident for the reuse of legacy components and subsystems, leaving vehicle architects and safety engineers to rely on experience without methodological support for their decisions. This poses challenges in the industry which is undergoing many significant changes due to new features like connectivity, electrification and automation. Here we focus on automated driving where multiple subsystems, both new and legacy, need to coordinate to realize a safety-critical function. This paper introduces a method to support consistent design of an ISO 26262 work product, the Functional Safety Concept (FSC). The method addresses a need within the industry for architectural analysis, rationale management and reuse of legacy subsystems. The method makes use of an existing work product, the diagnostic specifications of a subsystem, to assist in performing a systematic assessment of the influence a human driver, in the design of the subsystem. The output of the method is a report with an abstraction level suitable for a vehicle architect, used as a basis for decisions related to the FSC such as generating a Preliminary Architecture (PA) and building up argumentation for verification of the FSC. The proposed method is tested in a safety-critical braking subsystem at one of the largest heavy vehicle manufacturers in Sweden, Scania C.V. AB. The results demonstrate the benefits of the method including (i) reuse of pre-existing work products, (ii) gathering requirements for automated driving functions while designing the PA and FSC, (iii) the parallelization of work across the organization on the basis of expertise, and (iv) the applicability of the method across all types of subsystems.
description: 13 pages. SAE Technical Paper 2017-01-0056
An Infrared Renormalization Group Limit Cycle in QCD
Creators: name: Braaten, Eric
name: Hammer, H. -W.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Small increases in the up and down quark masses of QCD would tune the theory to the critical renormalization group trajectory for an infrared limit cycle in the three-nucleon system. At critical values of the quark masses, the deuteron binding energy goes to zero and the triton has infinitely many excited states with an accumulation point at the 3-nucleon threshold. The ratio of the binding energies of successive states approaches a universal constant that is close to 515. The proximity of physical QCD to the critical trajectory for this limit cycle explains the success of an effective field theory of nucleons with contact interactions only in describing the low-energy 3-nucleon system.
description: 4 pages, revtex4, 2 ps figures
Quantum key distribution over 30km of standard fiber using energy-time entangled photon pairs: a comparison of two chromatic dispersion reduction methods
Creators: name: Fasel, Sylvain
name: Gisin, Nicolas
name: Ribordy, Grégoire
name: Zbinden, Hugo
Publisher: name: arXiv
Year: 2004
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present a full implementation of a quantum key distribution system using energy-time entangled photon pairs and functioning with a 30km standard telecom fiber quantum channel. Two bases of two orthogonal states are implemented and the setup is quite robust to environmental constraints such as temperature variation. Two different ways to manage chromatic dispersion in the quantum channel are discussed.
description: 10 pages, 4 figures
EXCHANGE RATES IN INTERNATIONAL COMMODITY MODELS: THE COMMON CURRENCY QUESTION REVISITED
Creators: name: Meyers, William H.
name: Meyers, William H.
Publisher: name: Unknown
Year: 1977
Subjects: International Relations/Trade

description: This paper clarifies the difference between estimating supply and demand equations for individual countries in national currencies or converting to common currency prior to estimation. The appropriate procedure for a pooled cross-country time-series estimation model depends upon the cross-sectional constraints and whether nominal or real values are used.
Can chiral EFT give us satisfaction?
Creators: name: Machleidt, R.
name: Sammarruca, F.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We compare nuclear forces derived from chiral effective field theory (EFT) with those obtained from traditional (phenomenological and meson) models. By means of a careful analysis of paralleles and differences, we show that chiral EFT is superior to all earlier approaches in terms of both formal aspects and successful applications in ab initio calculations. However, in spite of the considerable progress made possible by chiral EFT, complete satisfaction cannot be claimed until outstanding problems---the renormalization issue being the most important one---are finally settled.
description: 23 pages, 21 figures; commissioned for the Topical Issue of The European Physical Journal A - Hadrons and Nuclei entitled "The tower of effective (field) theories and the emergence of nuclear phenomena."
FACTOR INTENSITY OF AMERICAN AGRICULTURAL TBADE
Creators: name: Schluter, Gerald
name: Lee, Gene K.
name: Schluter, Gerald
name: Lee, Gene K.
Publisher: name: Unknown
Year: 1977
Subjects: Labor and Human Capital

description: The labor and capital intensities of U.S. agricultural trade during 1976 are examined through an input-output model. The empirical results indicate our agricultural exports tend to be more capital intensive while agricultural imports are more labor I intensive, a result counter to Leontiefs Paradox.
title:  The Judicial System at the Crossroads of Populism and Elitism
Creators: name: Damele  ,  Giovanni
Publisher: name: Roma TrE-Press
Year: 2021

description: «Populismo penale» è diventata un’espressione comune e una categoria chiave tra gli studiosi tanto di populismo politico quanto di repressione del crimine; spesso è opposto al concetto di «elitismo penale». Il «populismo giudiziario» può essere considerato una sottocategoria della categoria più generale di populismo penale in quanto si riferisce all'applicazione giudiziaria del diritto penale. Anche in questo caso si può osservare una dialettica tra “populismo” ed “elitismo”. La magistratura, ad esempio, può essere presentata come agente di moralizzazione, per la sua indipendenza e la sua natura (presumibilmente) apolitica. Pertanto, il populismo giudiziario si trova all'incrocio tra populismo penale ed elitismo penale: esso condivide con il populismo penale la pretesa di parlare per il popolo, ma questa affermazione è chiaramente avanzata da un'élite tecnocratica.
description: Democrazia e Sicurezza – 2021 n. 1
A BIO-ECONOMIC MODEL OF BEEF, FORAGE AND GRAIN PRODUCTION FOR WESTERN CANADA
Creators: name: Sonntag, B.H.
name: Klein, K.K.
name: Sonntag, B.H.
name: Klein, K.K.
Publisher: name: Unknown
Year: 1977
Subjects: Livestock Production/Industries

description: Multidisciplinary research can provide a better understanding of agricultural production problems. A bio-economic model of beef, forage and grain production is described in terms of its biological and economic components. Special applicabilities for this type of model are noted.
Fostering reciprocal home and school relationships using e-portfolios
Creators: name: Bateman, Wendy
Publisher: name: The University of British Columbia
Year: 2019

description: Grounded in Bronfenbrenner’s (1977, 1994, 2005) bioecological model of human development and Dewey’s (1916/2009) philosophy of democratic education, in this capstone project I examine how the inclusion of students’ voice and family engagement with electronic portfolios in a kindergarten classrooms encourages democratic practices and supports the sharing of power by way of fostering three-way, ongoing communication between educators, kindergarten students and families in a rural Ontario classroom. Relationships are of crucial importance for creating democratic education where power is shared among all parties. However, there can be many factors that hinder the growth of these reciprocal relationships. Electronic portfolios offer a means of surmounting these obstacles to foster the three-way communication that is essential for families to engage in their children’s academic life. A family information night slideshow presentation and a list of recommendations for educators are included as a means of connecting theory to practice and for offering educators a resource for using electronic portfolios. I conclude with recommendations for research and school board level professional development on reciprocal relationships, student’s exposure to digital worlds, and electronic portfolios in the early years.
An Axiomatic Approach to Existence and Liveness for Differential Equations
Creators: name: Tan, Yong Kiam
name: Platzer, André
Publisher: name: arXiv
Year: 2020
Subjects: subject: Logic in Computer Science (cs.LO)
subject: FOS: Computer and information sciences
subject: F.3.1; F.4.1; G.1.7; I.2.3
subject: 03B70, 34A38

description: This article presents an axiomatic approach for deductive verification of existence and liveness for ordinary differential equations (ODEs) with differential dynamic logic (dL). The approach yields proofs that the solution of a given ODE exists long enough to reach a given target region without leaving a given evolution domain. Numerous subtleties complicate the generalization of discrete liveness verification techniques, such as loop variants, to the continuous setting. For example, ODE solutions may blow up in finite time or their progress towards the goal may converge to zero. These subtleties are handled in dL by successively refining ODE liveness properties using ODE invariance properties which have a complete axiomatization. This approach is widely applicable: several liveness arguments from the literature are surveyed and derived as special instances of axiomatic refinement in dL. These derivations also correct several soundness errors in the surveyed literature, which further highlights the subtlety of ODE liveness reasoning and the utility of an axiomatic approach. An important special case of this approach deduces (global) existence properties of ODEs, which are a fundamental part of every ODE liveness argument. Thus, all generalizations of existence properties and their proofs immediately lead to corresponding generalizations of ODE liveness arguments. Overall, the resulting library of common refinement steps enables both the sound development and justification of new ODE existence and of liveness proof rules from dL axioms. These insights are put into practice through an implementation of ODE liveness proofs in the KeYmaera X theorem prover for hybrid systems.
description: Significantly extended version of arXiv:1904.07984
Wilson Loops in 2D Noncommutative Euclidean Gauge Theory: 1. Perturbative Expansion
Creators: name: Ambjorn, J.
name: Dubin, A.
name: Makeenko, Y.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We calculate quantum averages of Wilson loops (holonomies) in gauge theories on the Euclidean noncommutative plane, using a path-integral representation of the star-product. We show how the perturbative expansion emerges from a concise general formula and demonstrate its anomalous behavior at large parameter of noncommutativity for the simplest nonplanar diagram of genus 1. We discuss various UV/IR regularizations of the two-dimensional noncommutative gauge theory in the axial gauge and, using the noncommutative loop equation, construct a consistent regularization.
description: 27 pages, 2 figures
RATIONAL AND BENEFICIAL USE: CHILE'S CRITERION FOR IRRIGATION WATER REALLOCATION
Creators: name: Parks, Loren L.
name: Hansen, David E.
name: Parks, Loren L.
name: Hansen, David E.
Publisher: name: Unknown
Year: 1977
Subjects: Resource /Energy Economics and Policy

description: The 1967 Water Code requires equalization of water rights per hectare in a "homogeneous farming area." Analysis of a typical region using representative farm LP models indicates that equalization would result in regressive income redistribution, whereas the optimum economic reallocation would result in progressive income, redistribution. Aggregate income gains in either case would not exceed 5%.
High Precision Stellar Radial Velocities in the Galactic Center
Creators: name: Figer, Donald F.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present radial velocities for 85 cool stars projected onto the central parsec of the Galaxy. The majority of these velocities have relative errors of $\sim$1 km/s, or a factor of $\sim$30-100 smaller than those previously obtained with proper motion or other radial velocity measurements for a similar stellar sample. The error in a typical individual stellar velocity, including all sources of uncertainty, is 1.7 km/s. Two similar data sets were obtained one month apart, and the total error in the relative velocities is 0.80 km/s\ in the case where an object is common to both data sets. The data are used to characterize the velocity distribution of the old population in the Galctic Center. We find that the stars have a Gaussian velocity distribution with a mean heliocentric velocity of $-10.1\pm$11.0 km/s (blueshifted) and a standard deviation of 100.9$\pm7.7$ km/s; the mean velocity of the sample is consistent with no bulk line-of-sight motion with respect to the Local Standard of Rest. At the 1 sigma level, the data are consistent with a symmetric velocity distribution about any arbitrary axis in the plane of the sky. We find evidence for a flattening in the distribution of late-type stars within a radius of $\sim$0.4 \pc, and infer a volume density distribution of r$^{-1/4}$ in this region. Finally, we establish a first epoch of radial velocity measurements which can be compared to subsequent epochs to measure small accelerations (1 km/s/yr), corresponding to the magnitude expected over a timespan of several years for stars nearest to Sgr A*.
description: retrieve full version at http://www-int.stsci.edu/$\sim$figer/papers/nirspec/vel/
AFMF Master Case Study: Machine Learning-Based Financial Simulation and Volatility Modelling (Alba & Alcoa)
Creators: name: Alaali, Hasan
Publisher: name: Zenodo
Year: 2025
Subjects: AFMF
Machine Learning
Financial Modeling
Random Forest
Alba
Alcoa
Capital Structure
ESG
Volatility
Simulation
Financial Ratios

description: This deposit contains all files used in the AFMF Master Case Study on financial ratios and simulation and volatility modeling, focusing on Alba and Alcoa.

Included are:

Machine learning simulation notebooks and code (.ipynb)

Random Forest model file (.pkl)

Supporting Excel data for ROA, ROE, SD, mean calculations

Full case study manuscript in PDF format

A structured README explaining the project files

The case study applies the Alaali Financial Models Framework (AFMF) to capital structure and earnings volatility in ESG-sensitive industries.
Exact solutions to $\displaystyle{\max_{\|x\|=1} \sum_{i=1}^\infty\|T_i(x)\|^2}$ with applications to Physics, Bioengineering and Statistics
Creators: name: García-Pacheco, Francisco Javier
name: Cobos-Sánchez, Clemente
name: Moreno-Pulido, Soledad
name: Sánchez-Alzola, Alberto
Publisher: name: arXiv
Year: 2024
Subjects: subject: Functional Analysis (math.FA)
subject: Mathematical Physics (math-ph)
subject: Optimization and Control (math.OC)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: The supporting vectors of a matrix A are the solutions of max || x ||_2 =1 {||Ax||_2^2}. The generalized supporting vectors of matrices A_1 , . . . , A_k are the solutions of max || x ||_2 =1 {||A_1x||_2^2 + ||A_2x||_2^2 + ... + ||A_kx||_2^2}. Notice that the previous optimization problem is also a boundary element problem since the maximum is attained on the unit sphere. Many problems in Physics, Statistics and Engineering can be modeled by using generalized supporting vectors. In this manuscript we first raise the generalized supporting vectors to the infinite dimensional case by solving the optimization problem max || x || =1 sum_{i=1}^\infty ||T i (x )||^2 where (T i )_i is a sequence ofbounded linear operators between Hilbert spaces H and K of any dimension. Observe that the previous optimization problem generalizes the first two. Then a unified MATLAB code is presented for computing generalized supporting vectors of a finite number of matrices. Some particular cases are considered and three novel examples are provided to which our technique applies: optimized observable magnitudes by a pure state in a quantum mechanical system, a TMS optimized coil and an optimal location problem using statistics multivariate analysis. These three examples show the wide applicability of our theoretical and computational model.
DNA Fingerprinting for Variety Identification and its implications to Area Estimate and Adoption Studies: Case of Submergence-tolerant Rice in Bangladesh
Creators: name: Yamano, T.
name: Hueglas, Z.
name: Habib, M.A.
name: Das, S.K.
name: Malabayabas, M.L.
name: Kretzschmar, T.
name: Carino, G.
name: Reveche, M.Y.
name: Yamano, T.
name: Hueglas, Z.
name: Habib, M.A.
name: Das, S.K.
name: Malabayabas, M.L.
name: Kretzschmar, T.
name: Carino, G.
name: Reveche, M.Y.
Publisher: name: Unknown
Year: 2017
Subjects: Research and Development/Tech Change/Emerging Technologies

description: Farmers in developing countries rarely know true variety names of crops they grow. In this paper, we identify rice variety identity with DNA fingerprinting by using an advanced gynotyping technique of 1,302 rice seed samples collected from total of 544 farmers in Bangladesh in 2014 and 2015. To identify farmers’ varieties, we compare the DNA information of farmers’ seeds against three DNA data sources: Bangladesh breeder seeds, Indian breeder seeds, and IRRI gene resources which include previously collected improved and traditional rice varieties. In particular, our analysis includes identification of submergence-tolerant rice varieties which have been developed and distributed in Bangladesh in recent years. The results indicate that about 7% of the seed samples were identified as submergence-tolerant rice varieties, i.e., BR11-Sub1 (5%) and Swarna-Sub1 (2%). Other modern varieties were also identified by DNA fingerprinting. Farmers’ identification of varieties was found poor, especially on old varieties. Simple adoption models indicate that the estimation results are unreliable when farmers’ ability to identify varieties is poor.