cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
SUPPLY RESPONSE OF UKRAINIAN AGRICULTURE
Creators: name: Murova, Olga I.
name: Coble, Keith H.
name: Trueblood, Michael A.
name: Murova, Olga I.
name: Coble, Keith H.
name: Trueblood, Michael A.
Publisher: name: Unknown
Year: 2001
Subjects: Demand and Price Analysis

description: This study explores the impact of technical inefficiency on agricultural supply functions in Ukraine. Two models using a system of output supply and input demand equations were evaluated in this research: one without inefficiency included in the model and another with inefficiency included. A likelihood ratio test found that the model with inefficiency included was the preferred model in this case. Incorporation of inefficiency into the model increased output supply elasticities and did not dramatically change input demand elasticities. The own-price elasticities for grains, sugar beets, sunflowers, and potatoes showed inelastic positive signs that were statistically significant. The own-price input demands were negative and also inelastic; however, only fertilizer and fuels were statistically significant.
Low loss electro-optic polymer based fast adaptive phase shifters realized in silicon nitride and oxynitride waveguide technology
Creators: name: Baudzus, Lars
name: Krummrich, Peter M.
Publisher: name: Technische Universität Dortmund
Year: 2016
Subjects: subject: Integrated optics
subject: Phase shifter
subject: Phase modulator
subject: Silicon oxynitride
subject: Silicon nitride
subject: Electro-optic polymer
subject: 620

description: We present a comprehensive study on how to design and fabricate low loss electro-optic phase shifters based on an electro-optic polymer and the silicon nitride and silicon oxynitride waveguide material systems. The loss mechanisms of phase shifters with an electro-optic (EO) polymer cladding are analyzed in detail and design solutions to achieve lowest losses are presented. In order to verify the low loss design a proof of concept prototype phase shifter was fabricated, which exhibits an attenuation of 0.8 dB/cm at 1550 nm and an electro-optic efficiency factor of 27%. Furthermore, the potential of this class of phase shifters is evaluated in numerical simulations, from which the optimal design parameters and achievable figures of merit were derived. The presented phase shifter design has its potential for application in fast adaptive multi stage devices for optical signal processing.
description: Photonics;3(3)
A SIMPLE MODEL OF VOLUNTARY VS MANDATORY LABELLING OF GMOS
Creators: name: Kirchhoff, Stefanie
name: Zago, Angelo M.
name: Kirchhoff, Stefanie
name: Zago, Angelo M.
Publisher: name: Unknown
Year: 2001
Subjects: Research and Development/Tech Change/Emerging Technologies

description: We consider the welfare impact of the mandatory and voluntary labelling to inform consumers on GMOs content in foods. With a model of vertical differentiation in competitive markets, we evaluate the effects on price equilibrium and welfare levels. We find that the mandatory labelling scheme would be optimal in those countries with more GMO-averse consumers and no-GMOs practices producers. Voluntary labelling would instead optimally be chosen in those countries where producers are using GMOs and consumers are more concerned about the costs savings resulting in this technology adoption.
TIME VARYING PARAMETERS IN THE DEMAND FOR HIGH FRUCTOSE CORN SYRUP
Creators: name: Evans, Edward A.
name: Ward, Ronald W.
name: Davis, Carlton George
name: Evans, Edward A.
name: Ward, Ronald W.
name: Davis, Carlton George
Publisher: name: Unknown
Year: 2001
Subjects: Demand and Price Analysis

description: Rapid adoption of high fructose corn syrup and the changing demand for HFCS is measured in a time-varying framework. Demand changes are separated into structural and price competitiveness. Tests for parameter stability are made and simulations based on the estimates are used to show the industry dynamics.
Experimental investigation of displacer seal geometry effects in Stirling cycle machines
Creators: name: Sauer, Jan
name: Kühl, Hans-Detlev
Publisher: name: Technische Universität Dortmund
Year: 2019
Subjects: subject: Stirling engine
subject: Experimental results
subject: Appendix gap loss
subject: 660
subject: Stirling-Motor
subject: Ladungswechsel

description: This contribution deals with an experimental investigation of the optimization potential of Stirling engines and similar regenerative machines by an enhanced design of the cylinder liner and the seal. The latter is mounted at the bottom end of the gap surrounding pistons and displacers that separate cylinder volumes at different temperature levels. The thermal loss associated with this gap may amount to more than 10% of the heat input into these machines. Mostly, its design is reduced to an estimation of the optimum width by analytical models, which usually do not account for further relevant optimization parameters, such as a step in the cylinder wall. However, a recently developed, enhanced analytical model predicts that this loss may be significantly reduced by such a step. In this work, this design was realized and investigated experimentally according to this prediction by modification of the cylinder liner and the seal of an extensively tested laboratory-scale machine. The results confirm that such a design actually reduces the thermal loss substantially, presumably by reducing the cyclic mass flows through the open end of the gap. Additionally, it even improves the net power output due to a reduced volumetric displacement by the piston or displacer, resulting in smaller flow losses and thermal regenerator losses, whereas the pressure amplitude remains virtually unchanged, contrary to initial expectations. This has led to the remarkable conclusion that the design of most Stirling engines is possibly suboptimal in this respect and may be improved a posteriori by a minor modification; i.e., a reduction of the effective displacer seal diameter.
description: Energies;12(21)
The general relativistic double polytrope for anisotropic matter
Creators: name: Abellan, G.
name: Fuenmayor, E.
name: Contreras, E.
name: Herrera, L.
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: A general formalism recently proposed to study Newtonian polytropes for anisotropic fluids is here extended to the relativistic regime. Thus, it is assumed that a polytropic equation of state is satisfied by, both, the radial and the tangential pressures of the fluid. Doing so the generalized Lane--Emden equations are obtained and solved. Some specific models are obtained, and their physical properties are discussed.
description: 8 pages, 7 figures
THE SUBSIDY FOR ADOPTING CONSERVATION TILLAGE: ESTIMATION FROM OBSERVED BEHAVIOR
Creators: name: Kurkalova, Lyubov A.
name: Kling, Catherine L.
name: Zhao, Jinhua
name: Kurkalova, Lyubov A.
name: Kling, Catherine L.
name: Zhao, Jinhua
Publisher: name: Unknown
Year: 2001
Subjects: Land Economics/Use

description: Due to payoff uncertainties combined with risk aversion and/or real options, farmers may demand a premium in order to adopt conservation tillage practices, over and above the compensation for the expected profit losses (if any). We propose a method of directly estimating the financial incentives for adopting conservation tillage and distinguishing between the expected payoff and the premium of adoption based on observed behavior. We find that the premium may play a significant role in farmers' adoption decisions. Even for non-adopters, conservation tillage provides a higher payoff than does conventional tillage on average, as agronomists have argued. However, non-adopters do not use conservation tillage because the expected profit gain alone does not fully compensate them for the uncertainties. To induce additional adoption, subsidies could be used. We find that in Iowa on average, the mean subsidy needed is $2.40 per acre per year for corn and $3.50 per acre per year for soybeans.
Bodies at play in the field of the nation : M.F. Husain and the trace of modernity
Creators: name: Wyma, Kathleen Lynne
Publisher: name: University of British Columbia
Year: 2009

description: In the last four years India's most widely recognized artist, M. F. Husain has been singled out on two separate occasions by the forces of Hindutva. The ire of the Hindu right was raised over Husain's nude depictions of Hindu goddesses, which were the claimed catalyst for both the destruction of the venerated artist's work and the laying of criminal charges against him. This thesis looks to these two events and offers up an inventory of traces, which interlace through the attacks on Husain's work and its correlative relationship to the articulation of a visual and political modern in India. The Husain controversy must be situated within the traffic of images that form a visual vernacular cutting across the linguistic, regional and religious differences in India. As the pages of my narrative unfold, I weave through various examples of how the palimpsest of India's modernity has functioned within the popular imagination so that I may suggest that the Hindutva movement has recuperated the trace of former images, the memory of their importance, and the significance of their cultural and political resonance.
A Possible High Nova Rate for Two Local Group Dwarf Galaxies: M32 and NGC 205
Creators: name: Neill, James D.
name: Shara, Michael M.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report the results of a preliminary nova survey of Local Group dwarf ellipticals. We used the Tenagra Observatory to observe M32, NGC 205, NGC 147, and NGC 185 in their entirety every clear night over a 4.5 month interval and discovered one nova in M32 and a candidate nova in NGC 205. The nova in M32 was verified spectroscopically. The nova candidate in NGC 205 had an unusually low peak luminosity (M_V = -5.1), and we were unable to obtain spectroscopic verification. We report a high bulk nova rate for M32 of 2(+2.4,-1.0) yr^-1 and, assuming the candidate nova is correctly identified, for NGC 205 of 2(+2.2,-1.0) yr^-1. If the NGC 205 variable is not a nova, we calculate an upper limit on the bulk nova rate for NGC 205 of 1.5 yr^-1. We report upper limits on the bulk nova rates in NGC 147 of 2 yr^-1 and NGC 185 of 1.8 yr^-1 and a combined bulk nova rate for the four galaxies of 4(+4.2,-1.4) yr^-1 (2{+3.9,-1.4} yr^-1 without the NGC 205 nova candidate). From the bulk rates, integrated and extinction corrected V-band photometry, and (V-K)_0 colors we derive a luminosity specific nova rate for M32 of 12.0(+14.4,-6.0) yr^-1 [10^10 L_Sun,K]^-1 and for NGC 205 of 29.3(+32.3,-14.7) yr^-1 [10^10 L_Sun,K]^-1 and for the combined 4 galaxies of 14.1(+14.8,-4.9) yr^-1 [10^10 L_Sun,K]^-1 (7.0{+13.7,-4.9} yr^-1[10^10 L_Sun,K]^-1 without the NGC 205 nova candidate). If the higher rate is confirmed by surveys in subsequent seasons, it would imply that either dwarf ellipticals have a higher interacting binary fraction than their higher mass counter parts, or that the completeness is higher for these less complex systems and the nova rates for larger, more distant systems are systematically underestimated.
description: 43 pages, 10 figures, accepted for publication in the Astronomical Journal (tentatively April 2005 issue). Full resolution versions of figures 1,2,5,7, and 8 can be found at http://astrowww.phys.uvic.ca/~neill/lgdes/
Διάγνωση διαβήτη με χρήση αλγορίθμων μηχανικής μάθησης
Creators: name: Σάλιαρης, Χαρίλαος
Publisher: name: Πανεπιστήμιο Πειραιώς
Year: 2020
Subjects: subject: Διάγνωση διαβήτη
subject: Μηχανική μάθηση
subject: Αλγόριθμοι

description: Ο τομέας της υγείας και ειδικότερα ο τομέας της υγειονομικής περίθαλψης έχει από καιρό υιοθετήσει και επωφεληθεί σημαντικά από την τεχνολογική πρόοδο. Τα τελευταία χρόνια, η μηχανική μάθηση (ένα υποσύνολο τεχνητής νοημοσύνης) διαδραματίζει βασικό ρόλο σε πολλές περιοχές που σχετίζονται με την υγεία, συμπεριλαμβανομένης της ανάπτυξης νέων ιατρικών διαδικασιών, του χειρισμού των δεδομένων και των αρχείων των ασθενών, της πρόβλεψης και της θεραπείας των χρόνιων ασθενειών, όπως είναι ο σακχαρώδης διαβήτης. Η συγκεκριμένη διπλωματική εργασία αφορά τη συγκριτική μελέτη αλγορίθμων μηχανικής μάθησης, καθώς και την αξιολόγηση της επίδοσης των αλγορίθμων για τη διάγνωση του σακχαρώδη διαβήτη μέσω του συνόλου δεδομένων Pima Indians Diabetes Database. Για κάθε ένα από τα μοντέλα μηχανικής μάθησης παράγονται μετρήσεις οι οποίες εν συνεχεία συγκρίνονται για να διαπιστωθεί ποιο από τα μοντέλα είναι το πιο αποτελεσματικό. Επίσης, πραγματοποιήθηκε αναδρομή και σύγκριση με άλλες έρευνες οι οποίες έχουν γίνει με χρήση του ίδιου συνόλου δεδομένων, καθώς και των ίδιων αλγορίθμων. Τέλος, με τη βοήθεια του προγράμματος που αναπτύχθηκε, ο κάθε χρήστης δύναται να εισάγει αποδεκτές τιμές στα απαιτούμενα πεδία, ώστε να διαπιστωθεί αν ο εν λόγω χρήστης πάσχει από σακχαρώδη διαβήτη ή όχι.
Seismic Search for Strange Quark Nuggets
Creators: name: Herrin, Eugene T.
name: Rosenbaum, Doris C.
name: Teplitz, Vigdor L.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Bounds on masses and abundances of Strange Quark Nuggets (SQNs) are inferred from a seismic search on Earth. Potential SQN bounds from a possible seismic search on the Moon are reviewed and compared with Earth capabilities. Bounds are derived from the data taken by seismometers implanted on the Moon by the Apollo astronauts. We show that the Apollo data implies that the abundance of SQNs in the region of 10 kg to one ton must be at least an order of magnitude less than would saturate the dark matter in the solar neighborhood.
description: 7 pages and 4 tables, plus 3 attached figures. Revised version responds to helpful comments of Phys. Rev. referee by adding 3 figures, subtracting two tables and taking into account information from QCD
MANAGING EUROPEAN CORN BORER RESISTANCE TO BT CORN WITH DYNAMIC REFUGES
Creators: name: Secchi, Silvia
name: Hurley, Terrance M.
name: Hellmich, Richard L.
name: Secchi, Silvia
name: Hurley, Terrance M.
name: Hellmich, Richard L.
Publisher: name: Unknown
Year: 2001
Subjects: Crop Production/Industries

description: We develop a dynamic bioeconomic model of temporally optimal dynamic refuge recommendations for resistance management when a backstop technology arrives at a known date. The impact of the characteristics of the backstop on the use of the current technology, and the difference between static and dynamic refuges are examined.
The 'as Code' Activities: Development Anti-patterns for Infrastructure as Code
Creators: name: Rahman, Akond
name: Farhana, Effat
name: Williams, Laurie
Publisher: name: arXiv
Year: 2020
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences
subject: D.2.9

description: Context: The 'as code' suffix in infrastructure as code (IaC) refers to applying software engineering activities, such as version control, to maintain IaC scripts. Without the application of these activities, defects that can have serious consequences may be introduced in IaC scripts. A systematic investigation of the development anti-patterns for IaC scripts can guide practitioners in identifying activities to avoid defects in IaC scripts. Development anti-patterns are recurring development activities that relate with defective IaC scripts. Goal: The goal of this paper is to help practitioners improve the quality of infrastructure as code (IaC) scripts by identifying development activities that relate with defective IaC scripts. Methodology: We identify development anti-patterns by adopting a mixed-methods approach, where we apply quantitative analysis with 2,138 open source IaC scripts and conduct a survey with 51 practitioners. Findings: We observe five development activities to be related with defective IaC scripts from our quantitative analysis. We identify five development anti-patterns namely, 'boss is not around', 'many cooks spoil', 'minors are spoiler', 'silos', and 'unfocused contribution'. Conclusion: Our identified development anti-patterns suggest the importance of 'as code' activities in IaC because these activities are related to quality of IaC scripts.
description: This is a journal-first paper accepted at the Empirical Software Engineering Journal on May 29, 2020
The 6.7-GHz and 25-GHz methanol masers in OMC-1
Creators: name: Voronkov, M. A.
name: Sobolev, A. M.
name: Ellingsen, S. P.
name: Ostrovskii, A. B.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The Australia Telescope Compact Array (ATCA) has been used to search for methanol maser emission at 6.7 GHz towards OMC-1. Two features peaking at 7.2 km/s and -1.1 km/s have been detected. The former has at least two components close in both velocity and position. It is located south-east of the Orion Kleinmann-Low (Orion-KL) nebula in the region of outflow traced by the 25-GHz methanol masers and the 95-GHz methanol emission. It is shown by modelling that in contrast to the widespread opinion that simultaneous masing of methanol transitions of different classes is impossible there are conditions for which simultaneous masing of the class II transition at 6.7-GHz and some class I transitions (e.g. the series at 25 GHz) is possible. A relevant example is provided, in which the pumping occurs via the first torsionally excited state and is driven by radiation of the dust intermixed with the gas in the cloud. In this regime the dust temperature is significantly lower (T is about 60 K) than in the case of bright 6.7-GHz masers (T>150 K). The narrow spectral feature at -1.1 km/s has a brightness temperature greater than about 1400 K, which suggests that it is probably a maser. It emanates from the Orion South region and is probably associated with the approaching part of outflow seen in CO. The 25-GHz maser associated with OMC-1 was observed quasi-simultaneously with the 6.7-GHz observations. No 25-GHz emission associated with the -1.1 km/s 6.7 GHz feature towards Orion South was detected.
description: 11 pages, 5 figures, 4 tables, mn2e.cls included; accepted by MNRAS
More compact orthogonal drawings by allowing additional bends
Creators: name: Jünger, Michael
name: Mutzel, Petra
name: Spisla, Christiane
Publisher: name: Technische Universität Dortmund
Year: 2018
Subjects: subject: Orthogonal compaction
subject: Graph drawing
subject: Total edge length
subject: Bends
subject: Flow-based compaction
subject: 004
subject: Graphenzeichnen

description: Compacting orthogonal drawings is a challenging task. Usually, algorithms try to compute drawings with small area or total edge length while preserving the underlying orthogonal shape. We suggest a moderate relaxation of the orthogonal compaction problem, namely the one-dimensional monotone flexible edge compaction problem with fixed vertex star geometry. We further show that this problem can be solved in polynomial time using a network flow model. An experimental evaluation shows that by allowing additional bends could reduce the total edge length and the drawing area.
description: Information;Jg. 9, Heft 7. S. 153-1-153-24
MECHANISMS TO INCREASE THE EFFICIENCY OF METHODICAL WORK BY DEVELOPING THE PROFESSIONAL COMPETENCE OF THE HEADS OF THE PRESCHOOL EDUCATIONAL ORGANIZATION
Creators: name: Kurbanov, Ibratbek
Publisher: name: Zenodo
Year: 2024

description: In this thesis, the theoretical foundations of improving the effectiveness of methodological work and improving the methodology of developing the professional competence of leaders by developing the professional competence of pedagogues in preschool educational organizations are explained.
Spitzer Observations of Centaurus A: Infrared Synchrotron Emission from the Northern Lobe
Creators: name: Brookes, M. H.
name: Lawrence, C. R.
name: Keene, J.
name: Stern, D.
name: Gorijan, V.
name: Werner, M.
name: Charmandaris, V.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present measurements obtained with the Spitzer Space Telescope in five bands from 3.6-24 microns of the northern inner radio lobe of Centaurus A, the nearest powerful radio galaxy. We show that this emission is synchrotron in origin. Comparison with ultraviolet observations from GALEX shows that diffuse ultraviolet emission exists in a smaller region than the infrared but also coincides with the radio jet. We discuss the possibility, that synchrotron emission is responsible for the ultraviolet emission and conclude that further data are required to confirm this.
description: 4 pages, accepted by ApJL
TOWARD A MINNESOTA MODEL OF THE FISCAL IMPACTS OF RESIDENTIAL DEVELOPMENT
Creators: name: Leishman, David
name: Kalambokidis, Laura
name: Leishman, David
name: Kalambokidis, Laura
Publisher: name: Unknown
Year: 2003
Subjects: Community/Rural/Urban Development
Land Economics/Use

description: Land use has become a critical issue for Minnesota communities, and for many of those on the suburban fringe, the central land-use policy question is whether or not to approve new residential development. New residences may bring increased property tax revenues, but the new residents will demand additional services from the county, city, utilities, and school district. On net, the impact on finances at all levels of government, especially into the future, is not always clear. In this paper, we describe some of the possible roles for the Extension Service in helping Minnesota communities to predict the fiscal impacts of residential development. We list some principles of fiscal impact modeling, describe an existing fiscal impact tool, and explain a number of issues that arose when that tool was used to estimate the impact of residential development in two Minnesota counties. Finally, we describe a possible framework for the next generation of personal computer-based, fiscal impact models.
Interactive Path Reasoning on Graph for Conversational Recommendation
Creators: name: Lei, Wenqiang
name: Zhang, Gangyi
name: He, Xiangnan
name: Miao, Yisong
name: Wang, Xiang
name: Chen, Liang
name: Chua, Tat-Seng
Publisher: name: arXiv
Year: 2020
Subjects: subject: Information Retrieval (cs.IR)
subject: FOS: Computer and information sciences

description: Traditional recommendation systems estimate user preference on items from past interaction history, thus suffering from the limitations of obtaining fine-grained and dynamic user preference. Conversational recommendation system (CRS) brings revolutions to those limitations by enabling the system to directly ask users about their preferred attributes on items. However, existing CRS methods do not make full use of such advantage -- they only use the attribute feedback in rather implicit ways such as updating the latent user representation. In this paper, we propose Conversational Path Reasoning (CPR), a generic framework that models conversational recommendation as an interactive path reasoning problem on a graph. It walks through the attribute vertices by following user feedback, utilizing the user preferred attributes in an explicit way. By leveraging on the graph structure, CPR is able to prune off many irrelevant candidate attributes, leading to better chance of hitting user preferred attributes. To demonstrate how CPR works, we propose a simple yet effective instantiation named SCPR (Simple CPR). We perform empirical studies on the multi-round conversational recommendation scenario, the most realistic CRS setting so far that considers multiple rounds of asking attributes and recommending items. Through extensive experiments on two datasets Yelp and LastFM, we validate the effectiveness of our SCPR, which significantly outperforms the state-of-the-art CRS methods EAR (arXiv:2002.09102) and CRM (arXiv:1806.03277). In particular, we find that the more attributes there are, the more advantages our method can achieve.
description: KDD 2020, 11 pages, 6 figures
SOCIOECONOMIC MODELS FOR DEVELOPMENT PLANNING, I: VALIDATIOIN METHODS
Creators: name: Maki, Wilbur R.
name: Maki, Wilbur R.
Publisher: name: Unknown
Year: 1981
Subjects: Community/Rural/Urban Development

description: The purpose of this paper is to assess alternate strategies of socioeconomic model validation. An extensive literature review provided the delineation of validation methods and, also, brief summaries of each type of validation. Finally, personal experience in the implementation and use of regional economic impact forecasting and simulation systems was used in outlining the structure and the steps of play of a simulation/gaming model for testing the validation methods listed earlier.
Spin Physics Progress with the STAR Detector at RHIC
Creators: name: Sowinski, J.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Progress in STAR over the last two years and projections for the coming two years are discussed. Important technical developments have been the completion of the barrel and endcap electromagnetic calorimeters. Measurement of inclusive pi_0 and jet A_LL over the next two years are expected to answer whether $Δ$G is a major contributor to the proton's spin. Transverse effects such as Collins and Sivers functions at mid-rapidity will also be investigated.
description: 4 pages, 1 figure. Contributed talk presented at the 16th International Spin Physics Symposium, October 10-16, 2004 in Trieste, Italy
title: Στατιστικές μέθοδοι μοντελοποίησης εξαρτημένων κινδύνων
title: Statistical methods for modelling dependent risks
titleType: AlternativeTitle
Creators: name: Δουβής, Σπυρίδων
Publisher: name: Πανεπιστήμιο Πειραιώς
Year: 2020
Subjects: subject: Εξαρτημένοι κίνδυνοι
subject: Copulas

description: Πολλές φορές όταν ενδιαφερόμαστε να μελετήσουμε την από κοινού συμπεριφορά δύο ή περισσότερων τυχαίων μεταβλητών ξεκινάμε με την υπόθεση ότι δεν υπάρχει εξάρτηση μεταξύ τους. Αυτή η υπόθεση όμως σπάνια επιβεβαιώνεται στην πράξη. Στην παρούσα εργασία θα αναφερθούμε στην έννοια του κινδύνου και σε κάποια από τα σημαντικότερα μέτρα του. Στη συνέχεια θα κάνουμε μια εισαγωγή στην θεωρία των Copulas και θα μιλήσουμε για έννοιες όπως η συσχέτιση και η εξάρτηση τυχαίων μεταβλητών. Τέλος, με τη χρήση όσων θα αναπτυχθούν θεωρητικά και της γλώσσας προγραμματισμού R, θα προχωρήσουμε στην κατασκευή ενός μαθηματικού μοντέλου το οποίο θα περιγράφει την από κοινού συμπεριφορά δύο τυχαίων μεταβλητών.
On kaonic hydrogen. Phenomenological quantum field theoretic model revisited
Creators: name: Ivanov, A. N.
name: Cargnelli, M.
name: Faber, M.
name: Fuhrmann, H.
name: Ivanova, V. A.
name: Marton, J.
name: Troitskaya, N. I.
name: Zmeskal, J.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We argue that due to isospin and U-spin invariance of strong low-energy interactions the S-wave scattering lengths a^0_0 and a^1_0 of bar-KN scattering with isospin I=0 and I = 1 satisfy the low-energy theorem a^0_0 + 3 a^1_0 = 0 valid to leading order in chiral expansion. In the model of strong low-energy bar-KN interactions at threshold (EPJA 21,11 (2004)) we revisit the contribution of the Sigma(1750) resonance, which does not saturate the low-energy theorem a^0_0 + 3 a^1_0 = 0, and replace it by the baryon background with properties of an SU(3) octet. We calculate the S-wave scattering amplitudes of K^-N and K^-d scattering at threshold. We calculate the energy level displacements of the ground states of kaonic hydrogen and kaonic deuterium. The result obtained for kaonic hydrogen agrees well with recent experimental data by the DEAR Collaboration. We analyse the cross sections for elastic and inelastic K^-p scattering for laboratory momenta of the incident K^- meson from the domain 70 MeV/c < p_K < 150 MeV/c. The theoretical results agree with the available experimental data within two standard deviations.
description: 20 pages, Latex, We have slightly corrected the contribution of the double scattering. This changes the S-wave scattering length of K^-d scattering by 17%, which is commensurable with the theoretical uncertainty
MINNESOTA FARM REAL ESTATE SALES: 1990 - 2002
Creators: name: Taff, Steven J.
name: Taff, Steven J.
Publisher: name: Unknown
Year: 2003
Subjects: Land Economics/Use

description: This publication is a snapshot of the Minnesota Farm Real Estate Sales web site (http://www.apec.umn.edu/faculty/sjtaff/salesstudy) as of May 2, 2003. It will be formally "reissued" (the web site will be recaptured) each Spring, as new sales data become available. We no longer distribute a separate farm real estate report in the Minnesota Agricultural Economist (now the Minnesota Applied Economist). The site consists largely of graphs and tables summarizing sales over the past decade. It provides averages at the multi-county region and at the statewide levels of aggregation. Individual transaction data are available for downloading and analysis at Minnesota Land Economics (MLE) web site, located at http://www.apec.umn.edu/landeconomics. Electronic versions of this document are presented in fully navigable portable document format (pdf).
Innovation and Alternative Building Technology within a Sustainable Development Paradigm
Creators: name: Sanya, Tom
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 330314
subject: Sustainable design

description: People are at the centre of sustainable development. Basing on this anthropocentric viewpoint this paper posits that alternative building technologies can play an active role in solving today’s shelter problems and indeed in creating habitats for sustainable living. The routinely assumed powerlessness of the poor is problematised to make the case that, with alternative building technologies, everyone can get to be part of the solution. For alternative technologies to be effective in such a role, it is argued, innovation at all building lifecycle must be catalysed. The goal should be creation of a self-organising framework for reconfiguration of processes and products at different scales to develop and utilise alternative technologies in ever fresh ways of building sustainable habitats. International and local South African statistics and examples are used to support the arguments.A presented at the Alternative Technologies Indaba in Johannesburg in 2010.
Prostate specific antigen (PSA) as predicting marker for clinical outcome and evaluation of early toxicity rate after high-dose rate brachytherapy (HDR-BT) in combination with additional external beam radiation therapy (EBRT) for high risk prostate cancer
Creators: name: Ecke, Thorsten H.
name: Huang-Tiel, Hui-Juan
name: Golka, Klaus
name: Selinski, Silvia
name: Geis, Berit Christine
name: Koswig, Stephan
name: Bathe, Katrin
name: Hallmann, Steffen
name: Gerullis, Holger
Publisher: name: Technische Universität Dortmund
Year: 2016
Subjects: subject: PSA
subject: Toxicity
subject: HDR brachytherapy
subject: Prostate cancer
subject: 610
subject: Prostata-spezifisches Antigen
subject: Toxizität
subject: Brachytherapie
subject: Prostatakrebs

description: High-dose-rate brachytherapy (HDR-BT) with external beam radiation therapy (EBRT) is a common treatment option for locally advanced prostate cancer (PCa). Seventy-nine male patients (median age 71 years, range 50 to 79) with high-risk PCa underwent HDR-BT following EBRT between December 2009 and January 2016 with a median follow-up of 21 months. HDR-BT was administered in two treatment sessions (one week interval) with 9 Gy per fraction using a planning system and the Ir192 treatment unit GammaMed Plus iX. EBRT was performed with CT-based 3D-conformal treatment planning with a total dose administration of 50.4 Gy with 1.8 Gy per fraction and five fractions per week. Follow-up for all patients was organized one, three, and five years after radiation therapy to evaluate early and late toxicity side effects, metastases, local recurrence, and prostate-specific antigen (PSA) value measured in ng/mL. The evaluated data included age, PSA at time of diagnosis, PSA density, BMI (body mass index), Gleason score, D’Amico risk classification for PCa, digital rectal examination (DRE), PSA value after one/three/five year(s) follow-up (FU), time of follow-up, TNM classification, prostate volume, and early toxicity rates. Early toxicity rates were 8.86% for gastrointestinal, and 6.33% for genitourinary side effects. Of all treated patients, 84.81% had no side effects. All reported complications in early toxicity were grade 1. PSA density at time of diagnosis (p = 0.009), PSA on date of first HDR-BT (p = 0.033), and PSA on date of first follow-up after one year (p = 0.025) have statistical significance on a higher risk to get a local recurrence during follow-up. HDR-BT in combination with additional EBRT in the presented design for high-risk PCa results in high biochemical control rates with minimal side-effects. PSA is a negative predictive biomarker for local recurrence during follow-up. A longer follow-up is needed to assess long-term outcome and toxicities.
description: Int. J. Mol. Sci.;17(11)
Πως η τεχνητή νοημοσύνη και η μηχανική μάθηση καθορίζουν το μέλλον του πελάτη στο digital marketing
Creators: name: Πετμέζογλου, Ευδοξία
Publisher: name: Πανεπιστήμιο Πειραιώς
Year: 2020
Subjects: subject: Ποιότητα υπηρεσιών
subject: Digital marketing
subject: Τεχνητή νοημοσύνη
subject: Εξυπηρέτηση πελατών
subject: SERVQUAL model
subject: Ηλεκτρονικό εμπόριο
subject: Chatbots

description: Η Τεχνητή Νοημοσύνη (AI) ανήκει σε ένα πεδίο μελέτης που υφίσταται εδώ και πολλές δεκαετίες ωστόσο πρόσφατα τέθηκε σε εφαρμογή. Παρά, λοιπόν, τη σχετική βρεφική ηλικία στην αγορά, οι εφαρμογές της τεχνητής νοημοσύνης έχουν ήδη εντυπωσιακή αποτελεσματικότητα σε όλους τους κλάδους, ιδιαίτερα στο marketing Όλες οι βελτιώσεις στην τεχνολογία της τεχνητής νοημοσύνης και ο συνεχώς αυξανόμενος αριθμός περιπτώσεων που υιοθετούν στοιχεία από το AI αποδεικνύοντας την αποτελεσματικότητά του έχουν συγκεντρώσει τον ενθουσιασμό των marketers. Αυτός ο ενθουσιασμός δεν έχει μεταφραστεί πλήρως στο πώς αυτή η τεχνολογία δουλεύει, πώς μπορεί να τεθεί σε εφαρμογή, με ποιους τρόπους να εφαρμοστεί καθώς και τις μακροπρόθεσμες επιπτώσεις που μπορεί να έχει στον κόσμο των επιχειρήσεων. Εφόσον λοιπόν, το AI εξελίσσεται και υιοθετείται από το Marketing, οι Marketers θα πρέπει να το διαχειριστούν αποτελεσματικά, και να το εφαρμόζουν με μεγαλύτερη δεξιότητα και εξειδίκευση. Η "εποχή marketing AI", όπως μπορεί να ονομαστεί, θα φέρει θεμελιώδεις αλλαγές στον τρόπο με τον οποίο οι marketers επιδρούν με τους πελάτες, τις τακτικές που ακολουθούν και τα εργαλεία που χρησιμοποιούν ώστε να επιτύχουν την ύψιστη ποιότητα στην εξυπηρέτηση των πελατών. Γι’ αυτό τον λόγο το θέμα της τεχνητής νοημοσύνης στο marketing απαιτεί μία σε βάθος έρευνα και ανάλυση για να προετοιμαστούν οι εταιρείες για τις μελλοντικές αλλαγές. Η συγκεκριμένη διπλωματική λοιπόν, υποστηρίζει ότι η τεχνητή νοημοσύνη προσφέρει καθαρά θετικά οφέλη στους marketers, τους καταναλωτές και την κοινωνία στο σύνολό της μέσω της ικανότητάς της να βελτιώνει τη δημιουργία, τη βελτιστοποίηση την εξυπηρέτηση του πελάτη και να δίνει αξία.
Multi-objective optimisation based planning of power-line grid expansions
Creators: name: Bachmann, Daniel
name: Bökler, Fritz
name: Kopec, Jakob
name: Popp, Kira
name: Schwarze, Björn
name: Weichert, Frank
Publisher: name: Technische Universität Dortmund
Year: 2018
Subjects: subject: multi-objective optimisation
subject: energy transmission
subject: decision support
subject: power-line routing
subject: interactive visualisation
subject: 004
subject: Mehrkriterielle Optimierung
subject: Energieübertragung
subject: Entscheidungsunterstützung

description: German nuclear power phase out in 2022 leads to significant reconstruction of the energy transmission system. Thus, efficient identification of practical transmission routes with minimum impact on ecological and economical interests is of growing importance. Due to the sensitivity of Germany’s public to grid expansion (especially in case of overhead lines), the participation and planning process needs to provide a high degree of openness and accountability. Therefore, a new methodological approach for the computer-assisted finding of optimal power-line routes considering planning, ecological and economic decision criteria is presented. The approach is implemented in a tool-chain for the determination of transmission line routes (and sets of transmission line route alternatives) based on multi-criteria optimisation. Additionally, a decision support system, based on common Geographic Information Systems (GIS), consisting of interactive visualisation and exploration of the solution space is proposed.
description: ISPRS International Journal of Geo-Information;Jg.: 7, Heft: 7 | S. 258-1-258-22
On the Number of Almost Envy-Free Allocations
Creators: name: Suksompong, Warut
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Science and Game Theory (cs.GT)
subject: Discrete Mathematics (cs.DM)
subject: FOS: Computer and information sciences

description: Envy-freeness is a standard benchmark of fairness in resource allocation. Since it cannot always be satisfied when the resource consists of indivisible items even when there are two agents, the relaxations envy-freeness up to one item (EF1) and envy-freeness up to any item (EFX) are often considered. We establish tight lower bounds on the number of allocations satisfying each of these benchmarks in the case of two agents. In particular, while there can be as few as two EFX allocations for any number of items, the number of EF1 allocations is always exponential in the number of items. Our results apply a version of the vertex isoperimetric inequality on the hypercube and help explain the large gap in terms of robustness between the two notions.
Artificial "spin ice" in a geometrically frustrated lattice of nanoscale ferromagnetic islands
Creators: name: Wang, R. F.
name: Nisoli, C.
name: Freitas, R. S.
name: Li, J.
name: McConville, W.
name: Cooley, B. J.
name: Lund, M. S.
name: Samarth, N.
name: Leighton, C.
name: Crespi, V. H.
name: Schiffer, P.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We report an artificial geometrically frustrated magnet based on an array of lithographically fabricated single-domain ferromagnetic islands. The islands are arranged such that the dipole interactions create a two-dimensional analogue to spin ice. Images of the magnetic moments of individual elements in this correlated system allow us to study the local accommodation of frustration. We see both ice-like short-range correlations and an absence of long-range correlations, behaviour which is strikingly similar to the lowtemperature state of spin ice. These results demonstrate that artificial frustrated magnets can provide an uncharted arena in which the physics of frustration can be directly visualized.
description: 13 pages, 3 figures
Innovation and Alternative Building Technology within aSustainable Development Paradigm
Creators: name: Sanya, Tom
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 330314
subject: Sustainable design

description: People are at the centre of sustainable development. Basing on this anthropocentric viewpoint this paper posits that alternative building technologies can play an active role in solving today’s shelter problems and indeed in creating habitats for sustainable living. The routinely assumed powerlessness of the poor is problematised to make the case that, with alternative building technologies, everyone can get to be part of the solution. For alternative technologies to be effective in such a role, it is argued, innovation at all building lifecycle must be catalysed. The goal should be creation of a self-organising framework for reconfiguration of processes and products at different scales to develop and utilise alternative technologies in ever fresh ways of building sustainable habitats. International and local South African statistics and examples are used to support the arguments.
Pulsar timing and the detection of black hole binary systems in globular clusters
Creators: name: Jenet, Fredrick A.
name: Creighton, Teviet
name: Lommen, Andrea
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The possible existence of intermediate mass binary black holes (IMBBHs) in globular clusters (GCs) offers a unique geometry in which to detect space-time oscillations. For certain pulsar-IMBBH configurations possible within a GC, the usual far-field plane wave approximation for the IMBBH metric perturbation severely underestimates the magnitude of the induced pulsar pulse time-of-arrival (TOA) fluctuations. In this letter, the expected TOA fluctuations induced by an IMBBH lying close to the line-of-sight between a pulsar and the Earth are calculated for the first time. For an IMBBH consisting of 10 Msolar and 10^3 Msolar components, a 10 year orbital period, and located 0.1 lyr from the Earth-Pulsar line of sight, the induced pulsar timing residual amplitude will be of order 5 to 500 ns.
description: Accepted into ApJ Letters. This is a slightly augmented version containing one extra figure
Detection and Prediction of Equilibrium States in Kinetic Plasma Simulations via Mode Tracking using Reduced-Order Dynamic Mode Decomposition
Creators: name: Nayak, Indranil
name: Kumar, Mrinal
name: Teixeira, Fernando L.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: A dynamic mode decomposition (DMD) based reduced-order model (ROM) is developed for tracking, detection, and prediction of kinetic plasma behavior. DMD is applied to the high-fidelity kinetic plasma model based on the electromagnetic particle-in-cell (EMPIC) algorithm to extract the underlying dynamics and key features of the model. In particular, the ability of DMD to reconstruct the spatial pattern of the self electric field from high-fidelity data and the effect of DMD extrapolated self-fields on charged particle dynamics are investigated. An in-line sliding-window DMD method is presented for identifying the transition from transient to equilibrium state based on the loci of DMD eigenvalues in the complex plane. The in-line detection of equilibrium state combined with time extrapolation ability of DMD has the potential to effectively expedite the simulation. Case studies involving electron beams and plasma ball are presented to assess the strengths and limitations of the proposed method.
Pulsed Laser Deposition of a PBN:65 Morphotropic Phase Boundary Thin Film with Large Electrostriction
Creators: name: Yang, Xi
name: Beckwith, A. W.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We deposited epitaxial thin films of Morphotropic Phase Boundary (MPB) Pb0.65Ba0.35Nb2O6 (PBN:65) on MgO substrates using pulsed laser deposition. Afterwards, a novel transmission optical experiment was developed to measure the electric field-induced bending angle of the thin film sample using a divergent incident light. From which the electric field-induced strain was obtained, and it was used to calculate the electrostrictive constant of the PBN thin film. The result is 0.000875 um2/V2, and it is consistent with what we measured in the reflection experiment.
description: 16 pages, 5 figures. Accepted for publication with CEJP, with re writes of document pending final Editorial board (of CEJP) final approval
Systematics of Global Observables in Cu+Cu and Au+Au Collisions at RHIC Energies
Creators: name: Nouicer, Rachid
Publisher: name: arXiv
Year: 2006
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Charged particles produced in Cu+Cu collisions at \sqrt{s_{NN}} = 200 and 62.4 GeV have been measured in the PHOBOS experiment at RHIC. The comparison of the results for Cu+Cu and Au+Au for the most central collisions at the same energy reveals that the particle density per nucleon participant pair and the extended longitudinal scaling behavior are similar in both systems. This implies that for the most central events in symmetric nucleus-nucleus collisions the particle density per nucleon participant pair does not depend on the size of the two colliding nuclei but only on the collision energy. Also the extended longitudinal scaling seems independent of the colliding energy and species for central collisions. In addition, there is an overall factorization of dN/dEta shapes as a function of collision centrality between Au+Au and Cu+Cu collisions at the same energy.
description: 3 pages, 2 figures. Contributed talk at PANIC '05 conference, Santa Fe, NM, Oct 24-28, 2005
Millimeter Wave Doppler Sensor for Nondestructive Evaluation of Materials
Creators: name: Liao, S.
name: Bakhtiari, S.
name: Elmer, T.
name: Lawrence, B.
name: Koehl, E. R.
name: Gopalsami, N.
name: Raptis, A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Applied Physics (physics.app-ph)
subject: Systems and Control (eess.SY)
subject: FOS: Physical sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Resonance modes are intrinsic characteristics of objects when excited at those frequencies. Probing the resonance signatures can reveal useful information about material composition, geometry, presence of defects, and other characteristics of the object under test. Vibration spectra can be measured remotely with high degree of sensitivity using a millimeter wave (mmW) Doppler sensor and a remote excitation source. This novel nondestructive evaluation (NDE) method can work in a non-contact manner as an alternative or complementary approach to conventional NDE methods such as those based on acoustic/ultrasonic and optical techniques. Millimeter wave vibrometry can be used for a wide range of civil and national security applications. Examples include detection of defects and degradation for diagnostics and prognostics of materials components and rapid standoff inspection of shielded/sealed containers for contraband. In this paper, we evaluate the performance of a compact mmW vibrometer developed at Argonne. Our 94 GHz I-Q Doppler sensor monitors the mechanical vibration signature of the object under interrogation that is induced by continuous wave excitation. For proof-of-principle demonstrations, the test objects were mechanically excited by an electronically controlled shaker using sinusoidal waves at various frequencies ranging from DC to 200 Hz. We will present a number of laboratory test results and will discuss the method's applicability to some practical NDE applications.
description: 10 pages, 10 figures
title: Ανάλυση σχέσης μεταξύ ΑΕΠ και δαπανών για την υγεία
title: Analysis of the relationship between GDP and health expenditure
titleType: AlternativeTitle
Creators: name: Παντελιού, Κωνσταντίνα
Publisher: name: Πανεπιστήμιο Πειραιώς
Year: 2020
Subjects: subject: ΑΕΠ
subject: Δαπάνες υγείας

description: Με το ζήτημα των αυξημένων δαπανών υγείας, γίνεται λόγος για τον επιζήμιο αντίκτυπο που αυτό έχει στα οικονομικά συστήματα αλλά και στα υγειονομικά συστήματα. Οι δημόσιες δαπάνες υγείας χρηματοδοτούνται από το Ακαθάριστο Εγχώριο Προϊόν και για αυτό το λόγο αυτή η διπλωματική εργασία αναλύει και παρουσιάζει τη σχέση μεταξύ αυτών των δύο μεγεθών. Για να αξιολογηθούν οικονομικά τα συστήματα υγείας, έχουν ληφθεί υπόψη μακροοικονομικοί δείκτες. Αναλύοντας και παρουσιάζοντας τα δεδομένα, παρατηρούμε τη διαχρονική αύξηση των δημόσιων υγειονομικών δαπανών, την αύξηση των ιδιωτικών δαπανών, τον αντίκτυπο τις οικονομικής κρίσης στα υγειονομικά συστήματα τις Ευρωπαϊκής Ένωσης αλλά και πως οι ανεπτυγμένες οικονομικά χώρες καταλαμβάνουν τις πρώτες θέσεις στην αντίστοιχη λίστα των ποσοστιαίων δαπανών για τη δημόσια υγεία επί του Α.Ε.Π.