cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
New method for calculating helicity amplitudes of jet-like QED processes for high-energy colliders II. Processes with lepton pair production
Creators: name: Carimalo, C.
name: Schiller, A.
name: Serbo, V. G.
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: As continuation of our previous paper we further develop our new method for calculating helicity amplitudes of jet-like QED processes described by tree diagrams, applying it to lepton pair production. This method consists in replacing spinor structures for real and weakly virtual intermediate leptons by simple transition vertices. New vertices are introduced for the pair production case, and previous bremsstrahlung vertices are generalized to include virtual photons inside the considered jet. We present a diagrammatic approach that allows to write down in an efficient way the leading helicity amplitudes, at tree level. The obtained compact amplitudes are particularly suitable for numerical calculations in jet-like kinematics. Several examples with up to four particles in a jet are discussed in detail.
description: 11 pages, 11 figures, Latex, Springer-Latex macros included
Unknown Future of the Banking Union’s Third Pillar
Creators: name: Zielińska, Klaudia
name: Zielińska, Klaudia
Publisher: name: Unknown
Year: 2019
Subjects: subject: Financial Economics
subject: Risk and Uncertainty
subject: banking union
subject: deposit guarantee schemes
subject: European Deposit Insurance Scheme

description: The aim of the article is to evaluate the process of building the third pillar of the banking union. The analysis of the problem required both subject literature studies and descriptive statistics. Time scope of the analysis covers the years 2012 until 2017. The relevant data used came from the European Central Bank and the European Banking Authority. The results of the study suggest that the creation of a European Deposit Guarantee Scheme is inevitable for further financial integration in the Eurozone but more detailed conditions need to be added to its implementation plan in order to have the scheme established. This stems from both the bad financial standing of some of the euro area banks and their dependency on the sovereign debt of their home and host countries. Studies also indicate low operational readiness of the national schemes, so a transition from re-insurance onto co-insurance phase will require increased efforts of both the Member States and the banks themselves.
description: DOI: 10.22630/PRS.2019.19.1.16
Using HARPS-N to characterise the long-period planets in the PH-2 and Kepler-103 systems
Creators: name: Dubber, Sophie C.
name: Mortier, Annelies
name: Rice, Ken
name: Nava, Chantanelle
name: Malavolta, Luca
name: Giles, Helen
name: Coffinet, Adrien
name: Charbonneau, David
name: Vanderburg, Andrew
name: Bonomo, Aldo S.
name: Boschin, Walter
name: Buchhave, Lars A.
name: Cameron, Andrew Collier
name: Cosentino, Rosario
name: Dumusque, Xavier
name: Ghedina, Adriano
name: Harutyunyan, Avet
name: Haywood, Raphaelle D.
name: Latham, David
name: Lopez-Morales, Mercedes
name: Micela, Giusi
name: Molinari, Emilio
name: Pepe, Francesco A.
name: Phillips, David
name: Piotto, Giampaolo
name: Poretti, Ennio
name: Sasselov, Dimitar
name: Sozzetti, Alessandro
name: Udry, Stephane
Publisher: name: arXiv
Year: 2019
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We present confirmation of the planetary nature of PH-2b, as well as the first mass estimates for the two planets in the Kepler-103 system. PH-2b and Kepler-103c are both long-period and transiting, a sparsely-populated category of exoplanet. We use {\it Kepler} light-curve data to estimate a radius, and then use HARPS-N radial velocities to determine the semi-amplitude of the stellar reflex motion and, hence, the planet mass. For PH-2b we recover a 3.5-$σ$ mass estimate of $M_p = 109^{+30}_{-32}$ M$_\oplus$ and a radius of $R_p = 9.49\pm0.16$ R$_\oplus$. This means that PH-2b has a Saturn-like bulk density and is the only planet of this type with an orbital period $P > 200$ days that orbits a single star. We find that Kepler-103b has a mass of $M_{\text{p,b}} = 11.7^{+4.31}_{-4.72}$ M$_{\oplus}$ and Kepler-103c has a mass of $M_{\text{p,c}} = 58.5^{+11.2}_{-11.4}$ M$_{\oplus}$. These are 2.5$σ$ and 5$σ$ results, respectively. With radii of $R_{\text{p,b}} = 3.49^{+0.06}_{-0.05}$ R$_\oplus$, and $R_{\text{p,c}} = 5.45^{+0.18}_{-0.17}$ R$_\oplus$, these results suggest that Kepler-103b has a Neptune-like density, while Kepler-103c is one of the highest density planets with a period $P > 100$ days. By providing high-precision estimates for the masses of the long-period, intermediate-mass planets PH-2b and Kepler-103c, we increase the sample of long-period planets with known masses and radii, which will improve our understanding of the mass-radius relation across the full range of exoplanet masses and radii.
description: Accepted for publication in MNRAS
Additional file 1 of SPECS: a non-parametric method to identify tissue-specific molecular features for unbalanced sample groups
Creators: name: Celine Everaert
name: Pieter-Jan Volders
name: Morlion, Annelien
name: Thas, Olivier
name: Mestdagh, Pieter
Publisher: name: figshare
Year: 2020
Subjects: subject: Space Science
subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Developmental Biology
subject: Cancer
subject: Computational Biology

description: Additional file 1. Supplementary methods.
Q2E - Wind turbine effects on bovine
Creators: name: Power, Gillian
name: Hanlon, Alison
Publisher: name: EURCAW Ruminants & Equines
Year: 2024
Subjects: animal welfare
bovine
wind turbine

description: EURCAW Ruminants & Equines has published its response to a question received in relation to wind turbine effects on bovines on pasture. This service, referred to as Questions to EURCAW (Q2E) is open to Competent Authorities and government policy workers of EU Member States.
Compliant morphing structures from twisted bulk metallic glass ribbons
Creators: name: Celli, Paolo
name: Lamaro, Alice
name: McMahan, Connor
name: Bordeenithikasem, Punnathat
name: Hofmann, Douglas
name: Daraio, Chiara
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: In this work, we investigate the use of pre-twisted metallic ribbons as building blocks for shape-changing structures. We manufacture these elements by twisting initially flat ribbons about their (lengthwise) centroidal axis into a helicoidal geometry, then thermoforming them to make this configuration a stress-free reference state. The helicoidal shape allows the ribbon to have preferred bending directions that vary throughout its length. These bending directions serve as compliant joints and enable several deployed and stowed configurations that are unachievable without pre-twist, provided that compaction does not induce material failure. We fabricate these ribbons using a bulk metallic glass (BMG), for its exceptional elasticity and thermoforming attributes. Combining numerical simulations, an analytical model based on shell theory and torsional experiments, we analyze the finite-twisting mechanics of various ribbon geometries. We find that, in ribbons with undulated edges, the twisting deformations can be better localized onto desired regions prior to thermoforming. Finally, we join together multiple ribbons to create deployable systems. Our work proposes a framework for creating fully metallic, yet compliant structures that may find application as elements for space structures and compliant robots.
Additional file 2 of SPECS: a non-parametric method to identify tissue-specific molecular features for unbalanced sample groups
Creators: name: Celine Everaert
name: Pieter-Jan Volders
name: Morlion, Annelien
name: Thas, Olivier
name: Mestdagh, Pieter
Publisher: name: figshare
Year: 2020
Subjects: subject: Space Science
subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Biotechnology
subject: Evolutionary Biology
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Developmental Biology
subject: Cancer
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: 60506 Virology

description: Additional file 2. Supplemental Figure 1. Heatmap of the median expression of the specific genes for each tissue, shows the degree of specificity. Supplemental Figure 2. Number of disallowance genes for each tissue and biotype is variable. Supplemental Figure 3. SPECS score distribuitions for all GTEx tissue types. Supplemental Figure 4. Most scores remain stable with a larger induced variance, while SPECS has a declining score.
Nonreciprocal radiative heat transfer between two planar bodies
Creators: name: Fan, Lingling
name: Guo, Yu
name: Papadakis, Georgia T.
name: Zhao, Bo
name: Zhao, Zhexin
name: Buddhiraju, Siddharth
name: Orenstein, Meir
name: Fan, Shanhui
Publisher: name: arXiv
Year: 2019
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We develop an analytical framework for nonreciprocal radiative heat transfer in two-body planar systems. Based on our formalism, we identify effects that are uniquely nonreciprocal in near-field heat transfer in planar systems. We further introduce a general thermodynamic constraint that is applicable for both reciprocal and nonreciprocal planar systems, in agreement with the second law of thermodynamics. We numerically demonstrate our findings in an example system consisting of magneto-optical materials. Our formalism applies to both near- and far-field regimes, opening opportunities for exploiting nonreciprocity in two-body radiative heat transfer systems.
description: 9 pages, 4 figures. Initial announce: Oct. 20th, 2019
An Observationally Constrained Analytical Model for Predicting the Magnetic Field Vectors of ICMEs at 1 AU
Creators: name: Sarkar, Ranadeep
name: Gopalswamy, Nat
name: Srivastava, Nandita
Publisher: name: arXiv
Year: 2019
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: We report on an observationally constrained analytical model, the INterplanetary Flux ROpe Simulator (INFROS), for predicting the magnetic-field vectors of coronal mass ejections (CMEs) in the interplanetary medium. The main architecture of INFROS involves using the near-Sun flux rope properties obtained from the observational parameters that are evolved through the model in order to estimate the magnetic field vectors of interplanetary CMEs (ICMEs) at any heliocentric distance. We have formulated a new approach in INFROS to incorporate the expanding nature and the time-varying axial magnetic field-strength of the flux rope during its passage over the spacecraft. As a proof of concept, we present the case study of an Earth-impacting CME which occurred on 2013 April 11. Using the near-Sun properties of the CME flux rope, we have estimated the magnetic vectors of the ICME as intersected by the spacecraft at 1 AU. The predicted magnetic field profiles of the ICME show good agreement with those observed by the in-situ spacecraft. Importantly, the maximum strength (10.5 $\pm$ 2.5 nT) of the southward component of the magnetic field (Bz) obtained from the model prediction, is in agreement with the observed value (11 nT). Although our model does not include the prediction of the ICME plasma parameters, as a first order approximation it shows promising results in forecasting of Bz in near real time which is critical for predicting the severity of the associated geomagnetic storms. This could prove to be a simple space-weather forecasting tool compared to the time-consuming and computationally expensive MHD models.
description: 16 pages, 10 figures, Accepted for publication in the Astrophysical Journal
A Reliable Gravity Compensation Control Strategy for dVRK Robotic Arms With Nonlinear Disturbance Forces
Creators: name: Lin, Hongbin
name: Hui, C. W. Vincent
name: Wang, Yan
name: Deguet, Anton
name: Kazanzides, Peter
name: Au, K. W. Samuel
Publisher: name: arXiv
Year: 2020
Subjects: subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: External disturbance forces caused by nonlinear springy electrical cables in the Master Tool Manipulator (MTM) of the da Vinci Research Kit (dVRK) limits the usage of the existing gravity compensation methods. Significant motion drifts at the MTM tip are often observed when the MTM is located far from its identification trajectory, preventing the usage of these methods for the entire workspace reliably. In this paper, we propose a general and systematic framework to address the problems of the gravity compensation for the MTM of the dVRK. Particularly, high order polynomial models were used to capture the highly nonlinear disturbance forces and integrated with the Multi-step Least Square Estimation (MLSE) framework. This method allows us to identify the parameters of both the gravitational and disturbance forces for each link sequentially, preventing residual error passing among the links of the MTM with uneven mass distribution. A corresponding gravity compensation controller was developed to compensate the gravitational and disturbance forces. The method was validated with extensive experiments in the majority of the manipulator's workspace, showing significant performance enhancements over existing methods. Finally, a deliverable software package in MATLAB and C++ was integrated with dVRK and published in the dVRK community for open-source research and development.
Tea Production and its Forecasts, and the Possibility of Tea Cultivation in the Context of Environmental Requirements in China
Creators: name: Karwowska, Kaja
name: Skotnicka, Magdalena
name: Śmiechowska, Maria
name: Karwowska, Kaja
name: Skotnicka, Magdalena
name: Śmiechowska, Maria
Publisher: name: Unknown
Year: 2019
Subjects: subject: Agribusiness
subject: Crop Production/Industries
subject: Environmental Economics and Policy
subject: International Relations/Trade
subject: tea
subject: plantations
subject: crop types
subject: climate changes
subject: local ecosystems

description: The present study demonstrates the reasons for the foundation of tea plantations and conditions of their cultivation. The limitations and negative consequences of cultivation of tea plants along with the ideas for their minimization are shown. Plantations were created to optimize the harvest. However, it has been found that they negatively influence local ecosystems. The global demand for tea leaves is constantly growing. Due to the specific climate requirements of tea plants and progressive climate changes, the arable land area suitable for their cultivation is constantly decreasing. New solutions should be implemented as soon as possible, ensuring a constant supply of raw material. Otherwise, in the next few years tea may become a luxury product. FAO has presented the activities that could reduce the losses. At the moment, the best solution might be to change crop types and diversify sources of raw material. It is also highlighted that there is a need to carry out research aiming at developing varieties of Camella sinensis with lower climate requirements.
description: DOI: 10.22630/PRS.2019.19.1.17
Additional file 1 of Another nexus? Exploring narratives on the linkage between EU external migration policies and the democratization of the southern Mediterranean neighbourhood
Creators: name: Faustini-Torres, Luisa
Publisher: name: figshare
Year: 2020
Subjects: subject: Molecular Biology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: Developmental Biology
subject: Inorganic Chemistry
subject: FOS: Chemical sciences
subject: Science Policy

description: Additional file 1: Annex I. Complete list of EU Official Documents.
Static quark anti-quark free energy and the running coupling at finite temperature
Creators: name: Kaczmarek, O.
name: Karsch, F.
name: Petreczky, P.
name: Zantow, F.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We analyze the free energy of a static quark anti-quark pair in quenched QCD at short and large distances. From this we deduce running couplings, g^2(r,T), and determine the length scale that separates at high temperature the short distance perturbative regime from the large distance non-perturbative regime in the QCD plasma phase. Ambiguities in the definition of a coupling beyond the perturbative regime are discussed in their relation to phenomenological considerations on heavy quark bound states in the quark gluon plasma. Our analysis suggests that it is more appropriate to characterize the non-perturbative properties of the QCD plasma phase close to T_c in terms remnants of the confinement part of the QCD force rather than a strong Coulombic force.
description: 8 pages, 9 EPS-files, revtex4
Holographic dark energy with non-minimal derivative coupling to gravity effects
Creators: name: Kritpetch, Chonticha
name: Muhammad, Candrasyah
name: Gumjudpai, Burin
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Non-minimal derivative coupling (NMDC) to gravity in flat FLRW universe is investigated in the scenario of holographic dark energy. Kinetic term is coupled to the Einstein tensor under potential $V = (1/2)m^2 ϕ^2$. The free kinetic term is allowed to be canonical and phantom. Gravitational constant is modified with the NMDC coupling. Holographic cutoff at Hubble horizon gives modification to dark energy density. We evaluate dark energy equation of state and the variation of gravitational constant of the theory such that the theory can be constrained. It is found that positive NMDC coupling is favored rather than the negative one. The model with purely NMDC theory and the potential is favored with positive sub-Planckian NMDC coupling and decaying scalar field. The canonical scalar field with positive NMDC coupling under the scalar potential is also viable under some conditions that result in oscillating scalar field. The phantom field case is not favored in this model since the coupling and scalar mass are required to be super-Planckian while it is tightly constrained by gravitational constant variation observations.
description: 12 pages, 12 figures
Three Switch Three Phase Inverter With Improved DC Voltage Utilization
Creators: name: Farhadi, Masoud
name: Abapour, Mehdi
Publisher: name: arXiv
Year: 2019
Subjects: subject: Systems and Control (eess.SY)
subject: Signal Processing (eess.SP)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: This paper proposes a new DC-AC converter with a less number of semiconductor switches and therefore gate drive and control circuit components. A salient feature of this inverter is its pure sinusoidal line-to-line voltages with no need for output filter. Also, the proposed inverter improves the voltage utilization factor of the input dc supply compared to four-switch three-phase inverter (first best topology in the literature from the number of switches point of view) and standard six-switch inverter with sine PWM. The proposed inverter is capable of operating with a wide range of output voltages from zero to the full value of the dc input voltage by appropriately altering instantaneous duty-cycle. For the first time to our knowledge, in this paper, a three-phase universal inverter with only three power-switch has been proposed. For the purpose of providing a good compromise between fast transient response and stability, a model predictive controller is proposed. All the design expressions have been derived. A comparison with other DC-AC converters is given to show the merits of the proposed converter. Finally, satisfactory circuit operation is confirmed by experimental results from a laboratory prototype.
Gauge Unification and Quark Masses in a Pati-Salam Model from Branes
Creators: name: Prikas, A.
name: Tracas, N. D.
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We investigate the phase space of parameters in the Pati-Salam model derived in the context of D-branes scenarios, requiring low energy string scale. We find that a non-supersymmetric version complies with a string scale as low as 10 TeV, while in the supersymmetric version the string scale raises up to ~2 x 10^7 TeV. The limited energy region for RGE running demands a large tan(beta) in order to have experimentally acceptable masses for the top and bottom quarks.
description: 11 pages, LaTeX, 7 figures included
Vision and Progress of Economic Science
Creators: name: Jaksic, Miomir
name: Jaksic, Miomir
Publisher: name: Unknown
Year: 2009
Subjects: subject: Public Economics
subject: macroeconomics
subject: keynesianism
subject: monezarism
subject: vision

description: Lack of vision, instead of finding new facts, is key problem of modern economic science. The art of economics is lost due to the fact that economists favoured methodology of Positive economics. Methodology of Arts of economics is much more complex, less deterministic, relies upon institutions and close connection between economy and society. Instead of U-topia, economists should develop Ev-topia, economy and society that develops and changes itself. This system fosters knowledge, human capacities, and systematically incorporates all new knowledge, adapting itself to changing
Chiral Limit of Strongly Coupled Lattice QCD at Finite Temperatures
Creators: name: Chandrasekharan, Shailesh
name: Jiang, Fu-Jiun
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: Condensed Matter (cond-mat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We use the recently proposed directed-path algorithm to study the chiral limit of strongly coupled lattice QCD with staggered quarks at finite temperatures. The new algorithm allows us to compute the chiral susceptibility and the pion decay constant accurately on large lattices for massless quarks. In the low temperature phase we find clear evidence for the singularities predicted by chiral perturbation theory. We also show convincingly that the chiral phase transition is of second order and belongs to the O(2) universality class.
description: 5 Pages, 4 Figures
Randomness and optimality in enhanced DNA ligation with crowding effects
Creators: name: Shiraki, Takaharu Y.
name: Kamei, Ken-ichiro
name: Maeda, Yusuke T.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Biological Physics (physics.bio-ph)
subject: FOS: Physical sciences

description: Enzymatic ligation is essential for the synthesis of long DNA. However, the number of ligated products exponentially decays as the DNA synthesis proceeds in a random manner. The controlling of ligation randomness is of importance to suppress exponential decay and demonstrate an efficient synthesis of long DNA. Here, we report the analysis of randomness in sequential DNA ligations, named qPCR-based STatistical Analysis of Randomness (qPCR-bSTAR), by a probability distribution of ligated DNA concentration. We show that the exponential decay is suppressed in a solution of another polymer and DNA ligation is activated at an optimal crowded condition. Theoretical model of kinetic ligation explains that intermolecular attraction due to molecular crowding can be involved in the optimal balance of the ligation speed and the available ligase. Our finding indicates that crowding effects enhance the synthesis of long DNA that retains large genetic information.
description: 9 pages, 5 figures, Supplemental materials 11 pages
Tourism as a Factor of Regional Development, Interculturalism and the Affirmation of the Culture of Peace Between Peoples
Creators: name: Mitrovic, Ljubisa
name: Mitrovic, Ljubisa
Publisher: name: Unknown
Year: 2009
Subjects: subject: Community/Rural/Urban Development
subject: tourism
subject: regional development
subject: ethno-cultural and ecological tourism
subject: Georgia
subject: the Balkans
subject: the culture of peace

description: The paper focuses on tourism as a complete social phenomenon and its place in the regional development of the contemporary world. Sociological and cultural analysis point to different functions which this polivalent phenomenon has in a structure and dynamics of the contemporarz world society. The author’s analysis focuses on the research of tourism as a factor of regional development, interculturalism and the affirmation of the culture of peace between people, with the special emphasis on the need and the possibilties of intergrational cooperation in teh feald of tourism between the Balkans and Georgia. The author points to the developmental and sociocultural function of tourism and homoturisticus in the modern world globalization.
Additional file 1 of Multimorbidity as a predictor of health service utilization in primary care: a registry-based study of the Catalan population
Creators: name: D. Monterde
name: E. Vela
name: M. Clèries
name: L. Garcia-Eroles
name: J. Roca
name: P. Pérez-Sust
Publisher: name: figshare
Year: 2020
Subjects: subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: Computational Biology

description: Additional file 1. Characteristics of the GMA algorithm and extended information on the study group.
DC-AC Converter-Fed Induction Motor Drive With Fault-Tolerant Capability Under Open- and Short-Circuit Switch Failures
Creators: name: Farhadi, Masoud
name: Fard, Majid Tahmasbi
name: Abapour, Mehdi
name: Hagh, Mehrdad Tarafdar
Publisher: name: arXiv
Year: 2019
Subjects: subject: Systems and Control (eess.SY)
subject: Signal Processing (eess.SP)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: In this paper, a new fault tolerant dc-ac converter-fed induction motor drive is proposed to maintain motor as close as possible to its desired normal operation under open- and short-circuit switch failures. The operational principles for fault detection and isolation schemes are provided. Two control strategies including predictive control and voltage mode-controlled PWM with integral-double-lead controller for two stage of the converter are presented in conjunction with the elaborated discussion. The control strategy determines appropriate switching states for continuous operation of the drive after a fault. The proposed topology makes it possible to integrate the minimal redundant hardware and full tolerance capability which is an important advantage of the proposed topology. Moreover, the most important advantages of the proposed topology are a fast response in a fault condition and low cost of the converter in comparison with the evaluated topologies. A Joule-integral-based method for selecting an appropriate rating of applied fuses has been presented to provide a reliable fault-isolation operation. Also, a comparison with currently available fault-tolerant dc-ac converters is given to show the merits of the proposed topology. Finally, the experimental results are presented to verify the validity of the theoretical analysis and industrial feasibility of the proposed converter.
MeV Gamma-Ray Imaging Detector with micro-TPC
Creators: name: Tanimori, Toru
name: Kubo, Hidetoshi
name: Miuchi, Kentaro
name: Nagayoshi, Tsutomu
name: Orito, Reiko
name: Takada, Atsushi
name: Takeda, Atsushi
name: Ueno, Masaru
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We propose a new imaging gamma-ray detector in the MeV region. By measuring the directions and energies of not only a scattered gamma ray but also a recoil electron, the direction of an incident gamma ray would be essentially reconstructed event by event. Furthermore, one of two measured (zenith and azimuth) angles of a recoil electron gives us an additional redundancy which enables us to reject the background events by kinematic constraints. In order to measure the track of a recoil electron, the micro Time Projection Chamber($μ$-TPC) has been developed, which can measure the successive positions of the track of charged particles in a few hundred micron meter pitch. The $μ$-TPC consists of the new type of a gas proportional chamber: micro PIxel gas Chamber ($μ$-PIC) which is one of wireless gas chambers and expected to be robust and stable. Using this $μ$-TPC and the Anger camera for the detection of a scattered gamma ray, we have obtained the first gamma-ray image by the full reconstruction of the direction of gamma rays event by event.
description: 7 pages, 6 figures Proceedings of the "Astronomy With Radioactives IV and Filling The Sensitivity Gap In MEV Astronomy", May 26-30, 2003 Seeon, Bavaria, Germany
Thermodynamic properties of a classical d-dimensional spin-S Heisenberg ferromagnet with long-range interactions via the spectral density method
Creators: name: Cavallo, A.
name: Cosenza, F.
name: De Cesare, L.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The thermodynamic properties of a classical d-dimensional spin-S Heisenberg ferromagnet, with long-range interactions decaying as $r^{-p}$ and in the presence of an external magnetic field, is investigated by means of the spectral density method in the framework of classical statistical mechanics. We find that long-range order exists at finite temperature for $dd$ with $d>2$, consistently with known theorems. Besides, the related critical temperature is determined and a study of the critical properties is performed.
description: 27 pages, 2 figures, Submitted to Physica A
Human Capital in Digital Economy
Creators: name: Dordevic, Branislav
name: Emeritus
name: Miletic, Slavomir
name: Dordevic, Branislav
name: Emeritus
name: Miletic, Slavomir
Publisher: name: Unknown
Year: 2009
Subjects: Labor and Human Capital

description: By the human-intelectual capital it is put one’s arms around the epicenter of the next human civilization development. The main intelectual effort of the man in the past time was to much change to the surround, and much low to his material structure, and particulary, to cognitive processess. It is obviously to beleive that one of the challenge way of the research in the science and technology will be to increase the intelectual capacity and urge the people creative, because it is the main agens for the stable process of civilization in the next milenium.
title: Οι εκπαιδευτικοί Φυσικής Αγωγής ως διευθυντές στις σχολικές μονάδες πρωτοβάθμιας εκπαίδευσης: Συνέργεια και αλληλεπίδραση με εκπαιδευτικούς άλλως ειδικοτήτων.
title: Physical education teachers as principals in primary schools: Synergy and interaction with teachers from other fields.
titleType: AlternativeTitle
Creators: name: Καλογεροπούλου, Ανδρονίκη
Publisher: name: Πανεπιστήμιο Πελοποννήσου
Year: 2024
Subjects: subject: Σχολική διοίκηση και οργάνωση
subject: Εκπαιδευτική ηγεσία
subject: Σχολικοί διευθυντές
subject: Καθηγητές Φυσικής Αγωγής - Εκπαίδευσή των
subject: Καθηγητές Φυσικής Αγωγής - Στάσεις
subject: School management and organization
subject: Educational leadership
subject: School principals
subject: Physical education teachers - Training of
subject: Physical education teachers - Attitudes
subject: Μετασχηματιστική ηγεσία
subject: Εκπαιδευτικοί φυσικής αγωγής
subject: Προφίλ σχολικών διευθυντών
subject: Αποτελεσματικότητα διευθυντών
subject: Transformational leadership
subject: Physical education teachers
subject: School principals’ profile
subject: Principals effectiveness

description: Στη σημερινή εποχή, ο ρόλος του εκπαιδευτικού και των διοικητικών στελεχών των σχολείων έχει αλλάξει δραστικά, επηρεαζόμενος από τις ταχέως μεταβαλλόμενες κοινωνικές, οικονομικές και τεχνολογικές συνθήκες. Οι διευθυντές σχολείων αναλαμβάνουν κεντρικό ρόλο στη διαμόρφωση του σχολικού περιβάλλοντος, ασκώντας στρατηγική ηγεσία και αντιμετωπίζοντας ποικίλες προκλήσεις. Η μετασχηματιστική ηγεσία είναι ένα ηγετικό στυλ που επικεντρώνεται στην ενδυνάμωση των συναδέλφων και στη δημιουργία ενός κοινού οράματος που εμπνέει και κινητοποιεί τους εμπλεκόμενους. Ο σκοπός της εργασίας αυτής ήταν η διερεύνηση των απόψεων εκπαιδευτικών πρωτοβάθμιας εκπαίδευσης, σχετικά με τις ικανότητες μετασχηματιστικής ηγεσίας των διευθυντών του σχολείου, οι οποίοι είναι εκπαιδευτικοί Φυσικής Αγωγής (ΦΑ) εντοπίζοντας διαφορές ανάλογα με τα δημογραφικά χαρακτηριστικά και εργασιακά στοιχεία των εκπαιδευτικών. Για την πραγματοποίηση της μελέτης χρησιμοποιήθηκε το προσαρμοσμένο στην Ελληνική ερωτηματολόγιο της Ηγεσίας του διευθυντή (Principal Leadership Questionnaire (PLQ). Συνολικά συμμετείχαν 113 εκπαιδευτικοί, από όλες τις ειδικεύσεις και καθεστώς απασχόλησης, από σχολικές μονάδες πρωτοβάθμιας εκπαίδευσης στο νομό Λακωνίας που διοικούνται από εκπαιδευτικούς ΦΑ. Σύμφωνα με τα αποτελέσματα της μελέτης, οι διευθυντές που θεωρούνται θετικό πρότυπο είναι εκείνοι που εφαρμόζουν στρατηγικές μετασχηματιστικής ηγεσίας, όπως η προώθηση της ομαδικότητας, του αλληλοσεβασμού και του ομαδικού οράματος. Οι διευθυντές ΦΑ οι οποίοι θεωρούνται από τους υπόλοιπους εκπαιδευτικούς πρότυπο, είναι εκείνοι που εμπνέουν τους υφιστάμενούς τους να συνεργάζονται και να είναι δημιουργικοί.
A Green's function approach to Topological Insulator junctions with magnetic and superconducting regions
Creators: name: Casas, Oscar E.
name: Páez, Shirley Gómez
name: Herrera, William J.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: This work presents a Green's function approach, originally implemented in graphene with well-defined edges, to the surface of a strong 3D Topological Insulator (TI) with a sequence of proximitized superconducting (S) and ferromagnetic (F) surfaces. This consists of the derivation of the Green's functions for each region by the asymptotic solutions method, and their coupling by a tight-binding Hamiltonian with the Dyson equation to obtain the full Green's functions of the system. These functions allow the direct calculation of the momentum-resolved spectral density of states, the identification of subgap interface states, and the derivation of the differential conductance for a wide variety of configurations of the junctions. We illustrate the application of this method for some simple systems with two and three regions, finding the characteristic chiral state of the Quantum Anomalous Hall Effect (QAHE) at the NF interfaces, and chiral Majorana modes at the NS interfaces. Finally, we discuss some geometrical effects present in three-region junctions such as weak Fabry-Pérot resonances and Andreev bound states.
description: 14 pages, 6 figures
Cheminformatics and the Exposome in Health and Disease
Creators: name: Schymanski, Emma
name: Aurich, Dagny
Publisher: name: Zenodo
Year: 2021
Subjects: cheminformatics
exposome

description: Cheminformatics and the Exposome in Health and Disease - invited contribution to the Second International Conference on
 Network Medicine and Big Data on April 12 and 13, 2021 (virtual conference) organised by Brigham and Women’s Hospital and
 Harvard Medical School, Boston, MA (USA).
Ballistic hot-electron transport in a quantum Hall edge channel defined by a double gate
Creators: name: Akiyama, Shunya
name: Hirasawa, Taichi
name: Sato, Yuya
name: Akiho, Takafumi
name: Muraki, Koji
name: Fujisawa, Toshimasa
Publisher: name: arXiv
Year: 2019
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Ballistic transport of hot electrons in a quantum Hall edge channel is attractive for studying electronic analog of quantum optics, where the edge potential profile is an important parameter that governs the charge velocity and scattering by longitudinal-optical (LO) phonons. Here we use a parallel double gate to control the electric field of the edge potential, and investigate the ballistic length of the channel by using hot-electron spectroscopy. The ballistic length is significantly enhanced by reducing the LO phonon scattering rate in the tailored potential.
description: 6 pages, 4 figures
Large extra dimension effects in Higgs boson production at linear colliders and Higgs factories
Creators: name: Datta, Anindya
name: Gabrielli, Emidio
name: Mele, Barbara
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In the framework of quantum gravity propagating in large extra dimensions, the effects of virtual Kaluza-Klein graviton and graviscalar interference with Higgs boson production amplitudes are computed at linear colliders and Higgs factories. The interference of the almost-continuous spectrum of the KK gravitons with the standard model resonant amplitude is finite and predictable in terms of the fundamental D-dimensional Plank scale M_D and the number of extra dimensions δ. We find that, for M_D ~ 1 TeV and δ=2, effects of the order of a few percent could be detected for heavy Higgs bosons (m_H>500 GeV) in Higgs production both via WW fusion in e^+e^- colliders and at μ^+μ^- Higgs-boson factories.
description: 16 pages, 2 figures ; a few comments and references added ; version to appear in JHEP
title: Σχεδίαση, ανάπτυξη και προγραμματιζόμενος έλεγχος μη επανδρωμένου σκάφους επιφανείας με τη χρήση τεχνολογιών του διαδικτύου των πράγματων
title: Design, development and programmable control of an unmanned surface vessel using internet of things technologies
titleType: AlternativeTitle
Creators: name: Δρυμώνης, Θεόδωρος
Publisher: name: Πανεπιστήμιο Δυτικής Αττικής
Year: 2022
Subjects: Unmanned surface vessel
Internet of things
Robot
Flight controller
ArduPilot
MAVLink
MQTT
Node-RED
Cloud computing
Microcontrollers
Διαδίκτυο πραγμάτων
Ρομπότ
Υπολογιστικό νέφος
Μικροελεγκτές
Μη επανδρωμένο σκάφος επιφανείας
Ελεγκτής πλοήγησης
Ρομποτική
Ρομποτικό όχημα

description: Στην εποχή μας, παρατηρείται η ενσωμάτωση ολοένα και περισσοτέρων μηχανών στον κόσμο του διαδικτύου των πραγμάτων (IoT, Internet of Things). Σκοπός της διατριβής αυτής είναι να διερευνηθούν οι δυνατότητες ενσωμάτωσης των IoT τεχνολογιών για τον έλεγχο ενός αυτόνομου ρομποτικού συστήματος. Πιο συγκεκριμένα, το σύστημα πάνω στο οποίο έγινε η διερεύνηση, είναι ένα μη επανδρωμένο σκάφος επιφανείας, το οποίο σχεδιάστηκε, αναπτύχθηκε και δοκιμάστηκε η λειτουργία του σε πραγματικές συνθήκες. Ο έλεγχος του οχήματος, βασίστηκε σε τεχνολογίες του διαδικτύου των πραγμάτων. Για την επικοινωνία μεταξύ μηχανών (MTC) και την μετάδοση δεδομένων στο διαδίκτυο, χρησιμοποιήθηκε το πρωτόκολλο MQTT. Η διαχείριση του οχήματος και των πληροφοριών που σχετίζονται με αυτό, έγινε μέσω της πλατφόρμας υπηρεσιών Node-RED (IoT PaaS). Για να επιτευχθεί ο απομακρυσμένος έλεγχος η παραπάνω υπηρεσία και ο MQTT Server/Broker αναπτύχθηκαν σε ένα υπολογιστικό σύστημα νέφους (Cloud Computer). H οδήγηση του ρομποτικού σκάφους βασίστηκε στην δημοφιλή, ανοικτού κώδικα πλατφόρμα αυτόματου πιλότου Ardupilot και έγινε εκτεταμένη χρήση του αντίστοιχου πρωτόκολλου επικοινωνίας MAVLink. Απαραίτητη ήταν η δημιουργία μιας εφαρμογής σε πλατφόρμα ανάπτυξης μικροελεγκτή ESP32, ώστε να γεφυρωθούν τα πρωτόκολλα MQTT και MAVLink. Στο πλαίσιο της εργασίας αυτής, γίνεται αναφορά στις σχετικές τεχνολογίες και βασικές θεωρητικές αρχές. Έπειτα παρουσιάζεται η μελέτη σχετικά με την αρχιτεκτονική του συστήματος και το υλικό, λογισμικό που επιλέχθηκαν να χρησιμοποιηθούν. Επίσης περιγράφεται, η διαδικασία υλοποίησης του ρομποτικού οχήματος, ανά υποσύστημα και όπου χρειάστηκε αναφέρθηκαν τα προβλήματα που προέκυψαν, αλλά και πώς αντιμετωπίστηκαν. Επιπρόσθετα παρουσιάζονται, τα αποτελέσματα και τα συμπεράσματα που προέκυψαν από τις δοκιμές του οχήματος. Τέλος προτείνονται μελλοντικά αντικείμενα έρευνας για τη βελτίωση των επιμέρους υποσυστημάτων του μη επανδρωμένου σκάφους επιφανείας που αναπτύχθηκε.
Non-Stationary Saturation of Inhomogeneously Broadened Spin Systems with Effective Cross-Relaxation
Creators: name: Kakushadze, Zura
Publisher: name: arXiv
Year: 2020
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Non-stationary saturation of inhomogeneously broadened EPR lines is investigated under effective cross-relaxation. The generalized kinetic equations are solved and the complex susceptibility is calculated. All quantities change in time exponentially.
description: 5 pages; a missing definition for a quantity added, no other changes; the original Russian version of this paper was published in a journal in 1990
Testing soft electroweak SUSY breaking from neutralino, chargino, and charged Higgs boson pairs production at linear colliders
Creators: name: Beccaria, M.
name: Eberl, H.
name: Renard, F. M.
name: Verzegnassi, C.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We consider the production of neutralino, chargino, and charged Higgs boson pairs in the MSSM framework at future $e^+e^-$ colliders. We show that, for c.m. energies in the one TeV range and in a ``moderately'' light SUSY scenario, a combined analysis of the slopes of these production cross sections could lead to a strong consistency test involving the soft supersymmetric breaking parameters $M_1$, $M_2$, the Higgsino parameter $μ$, and $\tanβ$.
description: 5 pages, 3 figures, RevTeX 4; typos corrected in equations and figures
Constraints on Neutrino Parameters from Neutral-Current Solar Neutrino Measurements
Creators: name: Balantekin, A. B.
name: Yuksel, H.
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We generalize the pull approach to define the $χ^2$ function to the analysis of the data with correlated statistical errors. We apply this method to the analysis of the Sudbury Neutrino Collaboration data obtained in the salt-phase. In the global analysis of all the solar neutrino and KamLAND data we find the best fit (minimum $χ^2$) values of neutrino parameters to be $\tan^2 θ_{12} \sim 0.42$ and $δm_{12}^2 \sim 7.1 \times 10^{-5}$ eV$^2$. We confirm that the maximal mixing is strongly disfavored while the bounds on $δm_{12}^2$ are significantly strengthened.
description: 6 figures. Some typos are corrected, figures are visually improved
Test magnetohydrostatic extrapolation with radiative MHD simulation of a solar flare
Creators: name: Zhu, Xiaoshuai
name: Wiegelmann, Thomas
Publisher: name: arXiv
Year: 2019
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Context. On the sun, the magnetic field vector is measured routinely only in the photosphere. By using these photospheric measurements as boundary condition, we developed the magnetohydrostatic (MHS) extrapolation to model the solar atmosphere. The model makes assumption about the relative importance of magnetic and non-magnetic forces. While the solar corona is force-free, this is not the case in photosphere and chromosphere. Aim. The model has been tested with an exact equilibria in \cite{zw18}. Here we present a more challenging and realistic test of our model with radiative MHD simulation of a solar flare. Methods. By using the optimization method, the MHS model computes self-consistently the magnetic field, plasma pressure and density. The nonlinear force-free field (NLFFF) and gravity stratified atmosphere along the field line are assumed as the initial condition of the optimization. Results. Compared with NLFFF, the MHS model gives an improved magnetic field not only in magnitude and direction, but also in the magnetic connectivity. Besides, the MHS model is able to recover the main structure of the plasma in the photosphere and chromosphere.
description: Accepted for publication in Astronomy and Astrophysics
Kosterlitz Thouless Universality in Dimer Models
Creators: name: Chandrasekharan, Shailesh
name: Strouthos, Costas G.
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: Using the monomer-dimer representation of strongly coupled U(N) lattice gauge theories with staggered fermions, we study finite temperature chiral phase transitions in (2+1) dimensions. A new cluster algorithm allows us to compute monomer-monomer and dimer-dimer correlations at zero monomer density (chiral limit) accurately on large lattices. This makes it possible to show convincingly, for the first time, that these models undergo a finite temperature phase transition which belongs to the Kosterlitz-Thouless universality class. We find that this universality class is unaffected even in the large N limit. This shows that the mean field analysis often used in this limit breaks down in the critical region.
description: 4 pages, 4 figures
Understanding of Competition Strategy in the Function OD Decusion of Marketing Aim in Organization
Creators: name: Miletic, Slavomir
name: Miletic, Slavomir
Publisher: name: Unknown
Year: 2009
Subjects: subject: Industrial Organization
subject: organization
subject: production
subject: competition strategy
subject: segment
subject: competition advantage
subject: analisy of defect

description: In the work it is understanded on the importance of problems competition strategy concerning the popcesses of planning marketing aims. It is analsy one of the main purpose of marketing strategy, namely, to enable the organisation to choose the bayers, namely, the segments with whom it wants to work.