cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Large exciton binding energies in MnPS$_3$ as a case study of vdW layered magnet
Creators: name: Birowska, Magdalena
name: Junior, Paulo E. Faria
name: Fabian, Jaroslav
name: Kunstmann, Jens
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Stable excitons in semiconductor monolayers such as transition-metal dichalcogenides (TMDCs) enable and motivate fundamental research as well as the development of room-temperature optoelectronics applications. The newly discovered layered magnetic materials present a unique opportunity to integrate optical functionalities with magnetism. We predict that a large class of antiferromagnetic semiconducting monolayers of the MPX$_3$ family exhibit giant excitonic binding energies, making them suitable platforms for magneto-optical investigations and optospintronics applications. Indeed, our investigations, based on first principles methods combined with an effective-model Bethe-Salpeter solver, show that excitons in bare Neel-MnPS$_3$ are bound by more than 1 eV, which is twice the excitonic energies in TMDCs. In addition, the antiferromagnetic ordering of monolayer samples can be inferred indirectly using different polarization of light.
description: 10 pages, 4 figures, 7 tables
Vector error correction modelling of Nigerian agricultural supply response
Creators: name: Olubode-Awosola, O.O.
name: Oyewumi, Olubukola Ayodeju
name: Jooste, Andre
name: Olubode-Awosola, O.O.
name: Oyewumi, Olubukola Ayodeju
name: Jooste, Andre
Publisher: name: Unknown
Year: 2006
Subjects: Agribusiness

description: Undue taxing of the agriculture sector could constitute a disincentive to agricultural production in most low-income African countries where agriculture is being taxed for industrial development. There is an argument that the high level of taxation of agriculture in favour of industrialization is in part due to the underestimation of the supply response of the agricultural sector. This study tests the theoretical hypotheses that only price, non-price and natural disincentives respectively pose problems for agricultural growth. Johansen's approach to co-integration analysis was employed to test these hypotheses using the time-series data from the Central Bank of Nigeria (CBN) statistical database. The long-run price elasticity of supply is 0.13 and capital shift supply 18 per cent. The implication of this is that much more in-depth research is needed to identify those factors that affect supply and to describe the effect of factors that shift supply in response to price incentives. This could provide valuable information for government in the use of appropriate policy measures and variables.
Gravitational lensing by Einstein-Born-Infeld black holes
Creators: name: Eiroa, Ernesto F.
Publisher: name: arXiv
Year: 2005
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In this paper, charged black holes in general relativity coupled to Born-Infeld electrodynamics are studied as gravitational lenses. The positions and magnifications of the relativistic images are obtained using the strong deflection limit, and the results are compared with those corresponding to a Reissner-Nordstrom black hole with the same mass and charge. As numerical examples, the model is applied to the supermassive Galactic center black hole and to a small size black hole situated in the Galactic halo.
description: 16 pages, 4 figures; v2: extended and improved, new references added. Accepted for publication in Physical Review D
Καλοήθεις και κακοήθεις όγκοι του υπογνάθιου σιελογόνου αδένα και των μικρών σιελογόνων αδένων:κλινική εικόνα,πρόγνωση και αντιμετώπιση
Creators: name: Κραββαρίτης, Θεόδωρος Χρήστου
Publisher: name: Aristotle University of Thessaloniki
Year: 2023
Subjects: Όγκοι υπογνάθιου σιελογόνου αδένα
Όγκοι ελασσόνων σιελογόνων αδένων
Βλεννοεπιδερμοειδές καρκίνωμα
Αδενοκυστικό καρκίνωμα
Πλειόμορφο αδένωμα
Submandibular salivary gland tumors
Minor salivary glands tumors
Mucoepidermoid carcinoma
Adenoid cystic carcinoma
Pleomorphic adenoma

description: Ο σκοπός της παρούσας μελέτης είναι η βιβλιογραφική ανασκόπηση σχετικά με την κλινική εικόνα, την πρόγνωση και την αντιμετώπιση των όγκων του υπογνάθιου σιελογόνου αδένα και των ελασσόνων σιελογόνων αδένων. Οι όγκοι των σιελογόνων αδένων είναι μια σπάνια κατάσταση που απαιτεί κυρίως χειρουργική θεραπεία και σε ορισμένες περιπτώσεις συμπληρωματική ακτινοθεραπεία ή χημειοθεραπεία, γεγονός που εξαρτάται από το στάδιο (TNM σταδιοποίηση), τον βαθμό διαφοροποίησης και τον ιστολογικό τύπο του όγκου.
description: The present study aims to conduct a review about physical presentation, prognosis and treatment of submandibular salivary gland tumors and minor salivary glands tumors as well. Salivary gland tumors are a rare condition that requires mostly surgical treatment and in some cases adjuvant radiotherapy or chemotherapy depending on the stage (TNM classification), the grade and the histopathology of the tumor.
Voigt, Karl Heinz: Die Methodistenkirche im Dritten Reich
Creators: name: Boyens, Armin
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 30 Nr. 2 (1981): Ökumenische Rundschau, Band 30, Heft 2
M33's Variable A -- A Hypergiant Star More Than 35 Years in Eruption
Creators: name: Humphreys, Roberta M.
name: Jones, Terry J.
name: Polomski, Elisha
name: Koppelman, Michael
name: Helton, Andrew
name: McQuinn, Kristen
name: Gehrz, Robert D.
name: Woodward, C. E.
name: Wagner, R. Mark
name: Gordon, Karl
name: Hinz, Joannah
name: Willner, S. P.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Variable A in M33 is a member of a rare class of highly luminous, evolved stars near the upper luminosity boundary that show sudden and dramatic shifts in apparent temperature due to the formation of optically thick winds in high mass loss episodes. Recent optical and infrared spectroscopy and imaging reveal that its ``eruption'' begun in $\sim$1950 has ended, {\it lasting $\approx$ 45 yrs}. Our current observations show major changes in its wind from a cool, dense envelope to a much warmer state surrounded by low density gas with rare emission lines of Ca II, [Ca II] and K I. Its spectral energy distribution has unexpectedly changed, especially at the long wavelengths, with a significant decrease in its apparent flux, while the star remains optically obscured. We conclude that much of its radiation is now escaping out of our line of sight. We attribute this to the changing structure and distribution of its circumstellar ejecta corresponding to the altered state of its wind as the star recovers from a high mass loss event.
description: 26 pages, 6 figures
title: Arbeitsheft zum Modul „Milch und Milchprodukte“
Creators: name: Brämer, Stefan
name: König, Lisa
name: Schüßler, Philipp
name: Vieback, Linda
Publisher: name: Otto von Guericke University, Library, Magdeburg, Germany
Year: 2021

description: Das Lehr-Lernarrangements (LLA) „Milch und Milchprodukte“ zielt auf den Bezug nachhaltiger Ressourcen und den Umgang damit ab. Exemplarisch wird die aus tierischer Produktion stammende Ressource Milch verwendet, da sie als Endprodukt, Zutat oder in Form von Milchprodukten (z.B. Butter) in verschiedenen Lebensmittelbranchen Verwendung findet. Am Beispiel der Produktion und Weiterverarbeitung von Milch können soziale, ökologische und ökonomische Perspektiven der Nachhaltigkeit beleuchtet werden.
The host of GRB/XRF 030528 - an actively star forming galaxy at z=0.782
Creators: name: Rau, A.
name: Salvato, M.
name: Greiner, J.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: An important parameter for the distinction of X-ray flashes, X-ray rich bursts and Gamma-ray bursts in the rest frame is the distance to the explosion site. Here we report on the spectroscopic redshift determination of the host galaxy of XRF/GRB 030528 using the ESO VLT FORS2 instrument. From the strong oxygen and hydrogen emission lines the redshift was measured to be z=0.782+-0.001. Obtaining the line luminosities and ratios we find that the host is consistent with being an actively star forming galaxy with sub-solar metallicity. With a stellar mass of ~10E10 Msun the host is placed among the most massive GRB host galaxies at a similar redshift. Estimating the redshifted properties of the prompt emission, we find that XRF/GRB 030528 would be classified as an X-ray rich bursts in the rest frame rather than an X-ray flash in the typically used observer frame.
description: 6 pages, 2 figures, accepted for publication in A&A
Do Inspection and Traceability Provide Incentives for Food Safety?
Creators: name: Starbird, S. Andrew
name: Amanor-Boadu, Vincent
name: Starbird, S. Andrew
name: Amanor-Boadu, Vincent
Publisher: name: Unknown
Year: 2006
Subjects: subject: Food Consumption/Nutrition/Food Safety
subject: diagnostic error
subject: food safety
subject: inspection
subject: sampling error
subject: traceability

description: One of the goals of inspection and traceability is to motivate suppliers to deliver safer food. The ability of these policies to motivate suppliers depends on the accuracy of the inspection, the cost of failing inspection, the cost of causing a foodborne illness, and the proportion of these costs paid by the supplier. We develop a model of the supplier's expected cost as a function of inspection accuracy, the cost of failure, and the proportion of the failure cost that is allocated to suppliers. The model is used to identify the conditions under which the supplier is motivated to deliver uncontaminated lots. Surprisingly, our results show that when safety failure costs can be allocated to suppliers, minimum levels of inspection error are required to motivate a supplier to deliver uncontaminated lots. This result does not hold when costs cannot be allocated to suppliers. As a case study, we use our results to analyze the technical requirements for suppliers of frozen beef to the USDA's Agricultural Marketing Service.
Elicitation on questions, relative clauses, and specificity
Creators: name: Rudolph, Johnny (Soni)
name: Ding, Lydia
name: Drummond, Emily
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2020
Subjects: subject: nkr

description: One .wav audio file and one .rtf transcription file for an elicitation on wh-questions, relative clauses, definiteness and specificity, and some word order. Corresponds to pages 100-105 in Notebook 1.
THE ORGANIZATION AND PROVISION OF FIRE PROTECTION SERVICES BY MUNICIPAL GOVERNMENTS IN HILLSDALE, JACKSON AND LENAWEE COUNTIES - MICHIGAN
Creators: name: Harvey, Lynn R.
name: Harvey, Lynn R.
Publisher: name: Unknown
Year: 1978
Subjects: Public Economics

description: Fire protection attempts to reduce the costs of fear, injury, death, uninsured property loss, and high fire insurance payments. Municipalities in protecting the health, safety, and welfare of the community have generally placed a high priority on providing fire protection with public revenues as one of the services to the residents. Local municipal officials face decisions on the allocation of financial resources. An expenditure for fire protection is a foregone opportunity for expenditure on parks for example. As growth occurs in a given area, local official must decide whether additional fire protection is needed, and if so, how should the protection be afforded? Should the local government unit start up their own department, purchase additional service, pool resources with a neighboring municipality or select not to provide protection leaving community residents to collectively organize and produce protection in the private sector. Local communities choosing to produce fire protection services have several options from which to select regarding organization of fire protections services. Each option involves tradeoffs which officials and the community may wish to consider.
$p$-band stability of ultracold atom gas in anharmonic optical lattice potential with large energy scales
Creators: name: Łącki, Mateusz
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: Using an optical potential with subwavelength resolution in the form of sharp $δ$-like peaks, new potential landscapes are created with increased anharmonicity in placement of lattice band energies and more favorable energy scales. In particular, this makes the ultracold atom p-band gas more stable. The article outlines the details of the construction and discusses the p-band stability in canonical cosine optical lattice potential, double well potential, and a combination of a classical cosine potential with dark state peaked potential.
description: 10 pages, 7 figures
Non-Local Pearson diffusions
Creators: name: Ascione, Giacomo
name: Leonenko, Nikolai
name: Pirozzi, Enrica
Publisher: name: arXiv
Year: 2020
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 35R11, 60K15, 60J60

description: In this paper we focus on strong solutions of some heat-like problems with a non-local derivative in time induced by a Bernstein function and an elliptic operator given by the generator or the Fokker-Planck operator of a Pearson diffusion. Such kind of non-local equations naturally arise in the treatment of particle motion in heterogeneous media. In particular, we use spectral decomposition results for the usual Pearson diffusion to exploit explicit solutions of the aforementioned equations. Moreover, we provide stochastic representation of such solutions in terms of time-changed Pearson diffusions. Finally, we exploit some further properties of these processes, such as limit distributions and long/short-range dependence.
description: 32 pages
Elicitations to transcribe frog story
Creators: name: Lekka, Mina
name: Rudolph, Johnny (Soni)
name: Ding, Lydia
name: Drummond, Emily
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2020
Subjects: subject: nkr

description: Two .wav audio files and .rtf transcription files of elicitations to transcribe the frog story told by Johnny Rudolph. Corresponds to pages 87-100 in Notebook 1.
DeepWay: a Deep Learning Waypoint Estimator for Global Path Generation
Creators: name: Mazzia, Vittorio
name: Salvetti, Francesco
name: Aghi, Diego
name: Chiaberge, Marcello
Publisher: name: arXiv
Year: 2020
Subjects: subject: Robotics (cs.RO)
subject: Artificial Intelligence (cs.AI)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: Image and Video Processing (eess.IV)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Agriculture 3.0 and 4.0 have gradually introduced service robotics and automation into several agricultural processes, mostly improving crops quality and seasonal yield. Row-based crops are the perfect settings to test and deploy smart machines capable of monitoring and manage the harvest. In this context, global path generation is essential either for ground or aerial vehicles, and it is the starting point for every type of mission plan. Nevertheless, little attention has been currently given to this problem by the research community and global path generation automation is still far to be solved. In order to generate a viable path for an autonomous machine, the presented research proposes a feature learning fully convolutional model capable of estimating waypoints given an occupancy grid map. In particular, we apply the proposed data-driven methodology to the specific case of row-based crops with the general objective to generate a global path able to cover the extension of the crop completely. Extensive experimentation with a custom made synthetic dataset and real satellite-derived images of different scenarios have proved the effectiveness of our methodology and demonstrated the feasibility of an end-to-end and completely autonomous global path planner.
description: Submitted to Computers and Electronics in Agriculture
Cox rings and combinatorics II
Creators: name: Hausen, Juergen
Publisher: name: arXiv
Year: 2008
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14C20, 14M25

description: We study varieties with a finitely generated Cox ring. In a first part, we generalize a combinatorial approach developed in earlier work for varieties with a torsion free divisor class group to the case of torsion. Then we turn to modifications, e.g., blow ups, and the question how the Cox ring changes under such maps. We answer this question for a certain class of modifications induced from modifications of ambient toric varieties. Moreover, we show that every variety with finitely generated Cox ring can be explicitly constructed in a finite series of toric ambient modifications from a combinatorially minimal one.
description: 41 pages, minor changes, to appear in Moscow Math. J
title: Noise Pollution and Abatement:
title: A Review of Literature
titleType: Subtitle
Creators: name: Agent, Kenneth R.
name: Deen, Robert C.
Publisher: name: Kentucky Transportation Center, University of Kentucky
Year: 1972
Subjects: subject: Transportation Engineering

description: Complaints concerning traffic noise and possibly seismic vibrations emanating from highways would probably have been adjudicated on the basis of common law doctrines pertaining to "nuisances", "common enemy'', and ''power of relief" were it not for recent legislation and regulations directed toward protection of the total environment. In effect, "freedom from noise" has been added to the clean water, clean air, clean earth policies. Surely each of those policies are founded on public sentiment.  There have been a few instances where the Department has yielded relief because of traffic noise. Now safeguarding regulations seem inevitable.  In the past, this Division has not presumed to pioneer in noise research but has been dutifully watchful toward developments elsewhere. We have procured a basic noise meter and have been cooperating with the Design Division in their more immediate efforts to bring measurements and abatement possibilities into consideration at the design stages.  The formal, research proposal attached hereto is intended to consolidate our more casual efforts of the past into a timely study implementation of regulations. The work thus far has not involved federal participation. Regardless of whether or not participation will be sought, critical review and comments on the proposal are invited. The report submitted herewith is probably best described as "soft work" ; it is a brief review of literature and is included here in support of the proposal. The first part was written by Diana Deen, R. C. Deen's daughter, for a high-school assignment. It appeared to bring forward certain items of information not found in highway literature.
Comment on "Non-Markovian harmonic oscillator across a magnetic field and time dependent force fields"
Creators: name: Das, Joydip
name: Bag, Bidhan Chandra
Publisher: name: arXiv
Year: 2020
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: In a recent paper Das {\it et al.} [J. Chem. Phys. {\bf 147}, 164102 (2017)] proposed the Fokker-Planck equation (FPE) for the Brownian harmonic oscillator in the presence of magnetic field and the non-Markovian thermal bath, respectively. This system has been studied very recently by J. C. Hidalgo-Gonzalez and J. I. Jiménez-Aquino [Phys. Rev. E {\bf{100}}, 062102 (2019)] and the Fokker-Planck equation was derived using the characteristic function. It includes a few extra terms in the FPE and the authors conclude that their method is accurate compared to the calculation by Das {\it et al.}. Then we reexamine our calculation and which is present in this comment. The revised calculation shows that both the methods give the same result.
description: arXiv admin note: text overlap with arXiv:2011.09771
A Rheological Study of Cohesive Soils
Creators: name: Allen, David L.
Publisher: name: Kentucky Transportation Center, University of Kentucky
Year: 1972
Subjects: subject: Transportation Engineering

description: An attempt has been made to describe the mechanistic behavior of remolded and undisturbed soils by application of the principles of rheology. This was accomplished by approximating and comparing the data obtained from transient creep tests and relaxation tests to the mathematical behavior of mechanical impedance models. The data were also analyzed by transforming static moduli and compliances into dynamic values by the application of Fourier transforms. Distribution functions of relaxation and retardation times, obtained by the application of LaPlace transforms, are presented.  All soils tested exhibited similar dynamic moduli and complince curves indicating that soil type had little effect on the general shape of these curves. A generally direct, linear relationship existed between magnitudes of the dynamic moduli and confirming pressure for the remolded soils. Distribution functions proved to be useful indicators of mechanical behavior; however, they were not consistently affected by either confining pressure or static stress level.
Accident and Economic Analyses of Access Control on Several Bypasses
Creators: name: Agent, Kenneth R.
Publisher: name: Kentucky Transportation Center, University of Kentucky
Year: 1972
Subjects: subject: Transportation Engineering

description: In an effort to relieve congestion on urban streets, bypasses have been built to provide through traffic a route by which the downtown areas can be avoided.  In many cases, though, bypasses have created a serious accident potential because they were built with at-grade intersections and no access control. This leads to commercial developments along the bypass and congestion at major intersections. Bypasses were constructed in this manner because of the high initial cost involved in building a bypass with access control and grade-separated interchanges. There is, therefore, a need to determine if the accident cost savings, along with time and operating cost savings, of a bypass with access control and interchanges would have justified the higher initial cost.  In this study, accident reports were obtained for several bypasses across the state and then analyzed to determine if they could have been prevented with the above mentioned controls. An accident was classified as "correctable" if it could have been prevented. Accident cost savings were then calculated using National Safety Council figures. Time and operating costs incurred by the motoring public as a result of stopping and returning to initial speed at the at-grade intersections, and conversely the benefits gained by building interchanges, were then calculated using tables which were based on traffic volumes and approach speeds at the intersections. Finally, using a study period of 20 years and a uniform-percentage-gradient series present-worth factor, the present worth of accident savings and time and operating cost savings were calculated. By comparing this savings with the initial cost of the construction of interchanges, benefit-cost ratios were calculated.
Convergence Properties of Stochastic Hypergradients
Creators: name: Grazzi, Riccardo
name: Pontil, Massimiliano
name: Salzo, Saverio
Publisher: name: arXiv
Year: 2020
Subjects: subject: Machine Learning (stat.ML)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Bilevel optimization problems are receiving increasing attention in machine learning as they provide a natural framework for hyperparameter optimization and meta-learning. A key step to tackle these problems is the efficient computation of the gradient of the upper-level objective (hypergradient). In this work, we study stochastic approximation schemes for the hypergradient, which are important when the lower-level problem is empirical risk minimization on a large dataset. The method that we propose is a stochastic variant of the approximate implicit differentiation approach in (Pedregosa, 2016). We provide bounds for the mean square error of the hypergradient approximation, under the assumption that the lower-level problem is accessible only through a stochastic mapping which is a contraction in expectation. In particular, our main bound is agnostic to the choice of the two stochastic solvers employed by the procedure. We provide numerical experiments to support our theoretical analysis and to show the advantage of using stochastic hypergradients in practice.
description: added experiments, a table of notation and some comments. 22 pages
Product Multicommodity Flow in Wireless Networks
Creators: name: Madan, Ritesh
name: Shah, Devavrat
name: Leveque, Olivier
Publisher: name: arXiv
Year: 2006
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: We provide a tight approximate characterization of the $n$-dimensional product multicommodity flow (PMF) region for a wireless network of $n$ nodes. Separate characterizations in terms of the spectral properties of appropriate network graphs are obtained in both an information theoretic sense and for a combinatorial interference model (e.g., Protocol model). These provide an inner approximation to the $n^2$ dimensional capacity region. These results answer the following questions which arise naturally from previous work: (a) What is the significance of $1/\sqrt{n}$ in the scaling laws for the Protocol interference model obtained by Gupta and Kumar (2000)? (b) Can we obtain a tight approximation to the "maximum supportable flow" for node distributions more general than the geometric random distribution, traffic models other than randomly chosen source-destination pairs, and under very general assumptions on the channel fading model? We first establish that the random source-destination model is essentially a one-dimensional approximation to the capacity region, and a special case of product multi-commodity flow. Building on previous results, for a combinatorial interference model given by a network and a conflict graph, we relate the product multicommodity flow to the spectral properties of the underlying graphs resulting in computational upper and lower bounds. For the more interesting random fading model with additive white Gaussian noise (AWGN), we show that the scaling laws for PMF can again be tightly characterized by the spectral properties of appropriately defined graphs. As an implication, we obtain computationally efficient upper and lower bounds on the PMF for any wireless network with a guaranteed approximation factor.
description: Revised version of "Capacity-Delay Scaling in Arbitrary Wireless Networks" submitted to the IEEE Transactions on Information Theory. Part of this work appeared in the Allerton Conference on Communication, Control, and Computing, Monticello, IL, 2005, and the Internation Symposium on Information Theory (ISIT), 2006
Incorporating expression data in metabolic modeling: a case study of lactate dehydrogenase
Creators: name: Downer, Joshua
name: Sevinsky, Joel R.
name: Ahn, Natalie G.
name: Resing, Katheryn A.
name: Betterton, M. D.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Subcellular Processes (q-bio.SC)
subject: Quantitative Methods (q-bio.QM)
subject: FOS: Biological sciences

description: Integrating biological information from different sources to understand cellular processes is an important problem in systems biology. We use data from mRNA expression arrays and chemical kinetics to formulate a metabolic model relevant to K562 erythroleukemia cells. MAP kinase pathway activation alters the expression of metabolic enzymes in K562 cells. Our array data show changes in expression of lactate dehydrogenase (LDH) isoforms after treatment with phorbol 12-myristate 13-acetate (PMA), which activates MAP kinase signaling. We model the change in lactate production which occurs when the MAP kinase pathway is activated, using a non-equilibrium, chemical-kinetic model of homolactic fermentation. In particular, we examine the role of LDH isoforms, which catalyze the conversion of pyruvate to lactate. Changes in the isoform ratio are not the primary determinant of the production of lactate. Rather, the total concentration of LDH controls the lactate concentration.
description: In press, Journal of Theoretical Biology. 27 pages, 9 figures
INSTITUTIONAL REFORM IN THE COMMERCIAL AGRICULTURAL SECTOR OF SOUTH AFRICA: AN INSTITUTIONAL REVIEW OF PAST AND PRESENT STRUCTURES, AND AN ASSESSMENT OF ISSUES AND OPTIONS FOR PRIVATE BASED REFORM INITIATIVES
Creators: name: Aling, James N.
name: Aling, James N.
Publisher: name: Unknown
Year: 1991
Subjects: Institutional and Behavioral Economics

description: The changing political economy and present structure and performance of the commercial agricultural sector in South Africa necessitates change. An institutional approach is adopted to review the origin of past and present institutions and organizations in the commercial sector. Private based reform initiatives are focused upon as one of the possible processes through reform in the sector can be undertaken. The private based reform initiatives undertaken in the sugar sub sector are analyzed from a situation, structure and performance perspective in attempt to explain the origins and outcomes of these initiatives. Successful lessons from the case study are examined with two other private based reform initiatives, namely sharecropping and employee share ownership programs, in an attempt to assess their suitability for inducing institutional reform in other sub sectors and situations.
Αυτόνομη κατάδυση και γυναίκες
Creators: name: Παγκιδου, Ευθυμία Κωνσταντίνου Πεντέλη
Publisher: name: Aristotle University of Thessaloniki
Year: 2023
Subjects: Γυναικεία κατάδυση
Καταδυτικες ασθένειες
Γυναίκες
Women
Diving
Illnesses

description: Οι καταδύσεις είναι αναμφίβολα μια από τις πιο όμορφες και συναρπαστικές δραστηριότητες αναψυχής, καθώς προσφέρουν άθληση, γνώση, υγεία και ψυχική ηρεμία. Πολλοί ξένοι τουρίστες, δεδομένου ότι οι χώρες καταγωγής τους δεν διαθέτουν τους απαραίτητους γεωφυσικούς πόρους, επιλέγουν συχνά να συνδυάσουν τον χρόνο των διακοπών τους στην Ελλάδα με δραστηριότητες, όπως οι καταδύσεις αναψυχής. Η απουσία λεπτομερούς καταγραφής του ελληνικού καταδυτικού τουρισμού και των αλληλεπιδράσεων μεταξύ των συμμετεχόντων σε αυτόν αποτελεί μείζον ζήτημα. Σκοπός της παρούσας εργασίας είναι να παρουσιαστεί ο ρόλος των γυναικών στην κατάδυση και να τονιστεί το γεγονός ότι είναι ενεργές δύτριες που συχνά κινδυνεύουν από καταδυτικές ασθένειες.
description: Scuba diving is undoubtedly one of the most beautiful and fascinating recreational activities. Many tourists frequently choose to scuba dive in Greece, since their home countries lack this type of geophysical resources. The absence of a detailed account of the Greek diving tourism business and the interaction between its participants is a major issue. The purpose of this essay is to present the role of women in diving and emphasise that women as divers often are at risk of diving-related illnesses.
description: Σε συνεργασία με: Ιατρικής (Δημοκρίτειο Πανεπιστήμιο Θράκης), Μηχανικών Περιβάλλοντος (Διεθνές Πανεπιστήμιο Ελλάδας)
Accretion vs. Core-Filament Collision: Implications for Streamer Formation in Per-emb-2
Creators: name: Nakamura, Fumitaka
name: Nguyen-Luong, Quang
name: Ishihara, Kousuke
name: Yoshino, Aoto
Publisher: name: arXiv
Year: 2024
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Recent millimeter and submillimeter observations have unveiled elongated and asymmetric structures around protostars. These structures, referred to as streamers, often exhibit coherent velocity gradients, seemingly indicating a directed gas flow towards the protostars. However, their origin and role in star formation remain uncertain. A protostellar core Per-emb-2, located in Barnard 1, has a relatively large streamer with $10^4$ au, which is more prominent in emission from carbon chain molecules. We aim to unveil the formation mechanism of this streamer. We conducted mapping observations towards Per-emb-2 using the NRO 45-m telescope. We targeted carbon chain molecular lines such as CCS, HC$_3$N, and HC$_5$N. Using astrodendro, we identified one protostellar and four starless cores, including three new detections, on the Herschel map. The starless and protostellar cores are more or less gravitationally bound. We discovered strong CCS and HC$_3$N emissions extending from the north to the south, appearing to bridge the gap between the protostellar core and the starless core north of it. This bridge spans $3\times 10^4$ au with the velocities from 6.5 to 7.0 km s$^{-1}$. The bridge has the velocity gradient opposite to the streamer. Thus, the streamer is unlikely to be connected to this bridge, suggesting that the streamer does not have an accretion origin. We propose that a collision between a spherical core and the filament has shaped the density structure in this region, consequently triggering star formation within the head-tail-shaped core. In this core-filament collision (CFC) scenario, the collision appears to have fragmented the filament into two structures. The streamer is a bow structure, while the bridge is a remnant of the shock-compressed filament. Thus, we conclude that the Per-emb-2 streamer does not significantly contribute to the mass accumulation towards the protostar.
description: accepted by Astronomy and Astrophysics Letters
Quasiperiodic criticality and spin-triplet superconductivity in superconductor-antiferromagnet moire patterns
Creators: name: Khosravian, Maryam
name: Lado, J. L.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Quasiperiodicity has long been known to be a potential platform to explore exotic phenomena, realizing an intricate middle point between ordered solids and disordered matter. In particular, quasiperiodic structures are promising playgrounds to engineer critical wavefunctions, a powerful starting point to engineer exotic correlated states. Here we show that systems hosting a quasiperiodic modulation of antiferromagnetism and spin-singlet superconductivity, as realized by atomic chains in twisted van der Waals materials, host a localization-delocalization transition as a function of the coupling strength. Associated with this transition, we demonstrate the emergence of a robust quasiperiodic critical point for arbitrary incommensurate potentials, that appears for generic relative weights of the spin-singlet superconductivity and antiferromagnetism. We show that the inclusion of residual electronic interactions leads to an emergent spin-triplet superconducting state, that gets dramatically enhanced at the vicinity of the quasiperiodic critical point. Our results put forward quasiperiodicity as a powerful knob to engineer robust superconducting states, providing an alternative pathway towards artificially designed unconventional superconductors.
description: 11 pages, 5 figures
Evidence for TeV Gamma-Ray Emission from the Galactic Plane
Creators: name: The Milagro Collaboration
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Gamma-ray emission from a narrow band at the Galactic equator has previously been detected up to 30 GeV. We report evidence for a TeV gamma-ray signal from the Galactic plane by Milagro, a large field of view water Cherenkov detector for extensive air showers. An excess with a significance of 4.5 standard deviations has been observed from the region of Galactic longitude between 40 and 100 deg and latitude |b| < 5 deg. Under the assumption of a simple power law spectrum, with no cutoff, in the EGRET-Milagro energy range, the measured integral flux is phi(>3.5TeV) = (6.4 +/- 1.4 +/- 2.1) 10^{-11} cm^{-2}s^{-1} str^{-1}. This flux is consistent with an extrapolation of the EGRET spectrum between 1 and 30 GeV in this Galactic region.
description: 5 pages, 5 figures, revtex4.sty, revised version
Municipal Consolidation: Theoretical Inquiry and Case Study - City of Iron River, MI
Creators: name: Martin, Joseph M.
name: Martin, Joseph M.
Publisher: name: Unknown
Year: 2006
Subjects: Public Economics

description: The City of Iron River was created as a consolidated municipality in the upper peninsula of Michigan during the late 1990's. The consolidation consisted of two cities and one village with a combined 2000 census population of 3,391. Persistent population loss, combined with the decline of the economic base, reduced the viability of the individual municipal governments, placing consolidation at the forefront of options. The analysis of small, rural municipalities is outside the focus of most consolidation studies, however, the theoretical considerations examined in this study apply to all consolidation questions. These questions revolve around theories of local government organization and size; addressing key points including, economies of scale, size, and scope, transition and social interaction costs, local government competition, and spillovers. The case study presented in this paper uses a two-pronged approach; the first examines the cost structure of three governments in a pre and post consolidation setting; and the second uses a quasi-experimental technique to ensure that cost savings were related to consolidation and not other exogenous factors. Recognizing that concerns extend beyond expenditures, anecdotal evidence was gathered from city officials and stakeholders in relation to service level and quality in the consolidated Iron River.
Loome, Thomas Michael: Liberal Catholicism, Reform Catholicism, Modernism
Creators: name: Pfisterer, K. Dietrich
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 30 Nr. 2 (1981): Ökumenische Rundschau, Band 30, Heft 2
Η ελληνική εκπαίδευση στην Κωνσταντινούπολη κατά τις αρχές του 20ου αιώνα, μέσα από τις σελίδες του περιοδικού «Εκκλησιαστική Αλήθεια
Creators: name: Μπαντή, Παρασκευή Χρήστου
Publisher: name: Aristotle University of Thessaloniki
Year: 2023
Subjects: Εκπαίδευση
Εκκλησιαστική Αλήθεια
Σχολές
Education
Ecclesiastical Truth
Schools

description: Η εν λόγω εργασία διαπραγματεύεται την ελληνική παιδεία στην Κωνσταντινούπολη στις αρχές του 20ου αιώνα. Πιο συγκεκριμένα, από την άνθιση της μέχρι και την παρακμή της, λίγο πριν την Μικρασιατική καταστροφή. Αναλύεται ο όρος και η έννοια της παιδείας. Μέσα από τις σελίδες του περιοδικού Εκκλησιαστική Αλήθεια γίνεται ιστορική αναφορά στα γεγονότα που διαδραματίστηκαν και στο καθεστώς της ελληνικής παιδείας. Παρουσιάζονται στοιχεία για την Πόλη που αφορούν την ανάπτυξη και την οικονομία της. Επιπλέον, γίνεται αναφορά, σε κάποια από τα πιο γνωστά σχολεία αλλά και στους συλλόγους που υπήρχαν, πώς πραγματοποιούνταν οι σχολικές εορτές, ότι είχε να κάνει με οικονομικούς πόρους, τους ευεργέτες, τον αριθμό των μαθητών, το πρόγραμμα και τους κανονισμούς που θέτονταν ανά καιρούς. Με φάρο την Εκκλησιαστική Αλήθεια παρουσιάζονται η Πατριαρχική Σχολή , η Μεγάλη του Γένους Σχολή, το Ζάππειο Παρθεναγωγείο, Το Ελληνικό Λύκειο Χρήστου Χατζηχρήστου, ο Φιλολογικός Σύλλογος, το Ιωακείμειο Παρθεναγωγείο, η Εθνική Σχολή Γλωσσών και Εμπορίου και η Αστική Σχολή Μαρασλή.
description: This work deals with Greek education in Constantinople at the beginning of the 20th century. More specifically, from its flowering until its decline, shortly before the Asia Minor disaster. The term and concept of education is analyzed. Within the pages of the magazine Ecclesiastical Truth, a historical reference is made to the events that took place in the status of Greek education. Data are presented for the city they refer to economy and development. In addition, it is mentioned, in some of the most famous schools as well as in the organisations that existed, how the school celebration were held, what it had to do with the resources, the beneficence, the number of students, the program and the regulations that were set from time to time .The Patriarchal School, the Megalou tou Genous School, the Zappeio Girls' School, the Hellenic Lyceum of Christos Hatzikristos, the Philological Society, the Joachimio Girls' School, the National School of Languages and Commerce and the Marasli Urban School are presented as beacons of ecclesiastical truth.
description: Σε συνεργασία με: Κοινωνικής Θεολογίας (Εθνικό και Καποδιστριακό Πανεπιστήμιο Αθηνών)
Spin states of X-complex asteroids in the inner main belt -- I. Investigating the Athor and Zita collisional families
Creators: name: Athanasopoulos, D.
name: Hanuš, J.
name: Avdellidou, C.
name: van Belle, G.
name: Ferrero, A.
name: Bonamico, R.
name: Gazeas, K.
name: Delbo, M.
name: Rivet, J. P.
name: Apostolovska, G.
name: Todorović, N.
name: Novakovic, B.
name: Bebekovska, E. V.
name: Romanyuk, Y.
name: Bolin, B. T.
name: Zhou, W.
name: Agrusa, H.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: The aim of our study is to characterise the spin states of the members of the Athor and Zita collisional families and test whether these members have a spin distribution consistent with a common origin from the break up of their respective family parent asteroids. Our method is based on the asteroid family evolution, which indicates that there should be a statistical predominance of retrograde-rotating asteroids on the inward side of family's V-shape, and prograde-rotating asteroids on the outward side. We used photometric data from our campaign and the literature in order to reveal the spin states of the asteroids belonging to these families. We combined dense and sparse photometric data in order to construct lightcurves; we performed the lightcurve inversion method to estimate the sidereal period, spin axis and convex shape of several family members. We obtained 34 new asteroid models for Athor family members and 17 for Zita family members. Along with the literature and revised models, the Athor family contains 60% of retrograde asteroids on the inward side and, 76% of prograde asteroids on the outward side. We also found that the Zita family exhibits 80% of retrograde asteroids on the inward side and an equal amount of prograde and retrograde rotators on the outward side. However, when we applied Kernel density estimation, we also found a clear peak for prograde asteroids on the outward side, as expected from the theory. The spin states of these asteroids validate the existence of both families, with the Athor family exhibiting a stronger signature for the presence of retrograde-rotating and prograde-rotating asteroids on the inner and outer side of the family, respectively. Our work provides an independent confirmation and characterisation of these very old families, whose presence and characteristics offer constraints for theories and models of the Solar System's evolution.
A Study in Frequency-Dependent Effects on Precision Pulsar Timing Parameters with the Pulsar Signal Simulator
Creators: name: Shapiro-Albert, Brent J.
name: Hazboun, Jeffrey S.
name: McLaughlin, Maura A.
name: Lam, Michael T.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: In this paper we introduce a new Python package, the Pulsar Signal Simulator, or PsrSigSim, which is designed to simulate a pulsar signal from emission at the pulsar, through the interstellar medium, to observation by a radio telescope, and digitization in a standard data format. We use the PsrSigSim to simulate observations of three millisecond pulsars, PSRs J1744--1134, B1855+09, and B1953+29, to explore the covariances between frequency-dependent parameters, such as variations in the dispersion measure (DM), pulse profile evolution with frequency, and pulse scatter broadening. We show that the PsrSigSim can produce realistic simulated data and can accurately recover the parameters injected into the data. We also find that while there are covariances when fitting DM variations and frequency-dependent parameters, they have little effect on timing precision. Our simulations also show that time-variable scattering delays decrease the accuracy and increase the variability of the recovered DM and frequency-dependent parameters. Despite this, our simulations also show that the time-variable scattering delays have little impact on the root mean square of the timing residuals. This suggests that the variability seen in recovered DM, when time-variable scattering delays are present, is due to a covariance between the two parameters, with the DM modeling out the additional scattering delays.
description: 21 pages, 9 figures, 7 tables, accepted for publication in ApJ
Kerr-like nonlinearities in an optomechanical system with an asymmetric anharmonic mechanical resonator
Creators: name: Saiko, A. P.
name: Fedaruk, R.
name: Markevich, S. A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: In the framework of the nonsecular perturbation theory based on the Bogoliubov averaging method, an optomechanical system with an asymmetric anharmonic mechanical resonator is studied. The cross-Kerr interaction and the Kerr-like self-interaction of photons and vibration quanta arise in the Hamiltonian. These interactions are induced by both cubic and quartic nonlinearities of oscillations of the mechanical resonator and the cavity-resonator interaction that is linear in mechanical displacements. We demonstrate a bistable behavior of the number of vibration quanta and find that this behavior is controlled by the cross-Kerr interaction. It is shown that, without driving and dissipation, the constructed superposition Yurke-Stoler-like states of the cavity (or the mechanical resonator) disentangle at certain times the entangled modes of the system. The obtained results offer new possibilities for control of optomechanical systems with asymmetric mechanical oscillations.
description: 5 pages, 1 figures
EXTENSION IN AFRICA: AN INSTITUTIONAL ANALYSIS
Creators: name: Schwartz, Lisa A.
name: Schwartz, Lisa A.
Publisher: name: Unknown
Year: 1991
Subjects: Teaching/Communication/Extension/Profession

description: The origins of extension work can be traced largely to the format organization of "agricultural extension" during the second half of the nineteenth century in Europe and North America, the models having since spread to other geographical areas and to other fields of human activities. What remained throughout, however, has been the idea of extension as a way of communicating technical and scientific information to clients on the assumption that once they started using this information it would enable them to improve their living conditions (Huizinga, 1982, p. 134).