cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Phase mixing of shear Alfven waves as a new mechanism for electron acceleration in collisionless, kinetic plasmas
Creators: name: Tsiklauri, David
name: Sakai, Jun-Ichi
name: Saito, Shinji
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Particle-In-Cell (kinetic) simulations of shear Alfvén wave interaction with one dimensional, across the uniform magnetic field, density inhomogeneity (phase mixing) in collisionless plasma were performed for the first time. As a result a new electron acceleration mechanism is discovered. Progressive distortion of Alfvén wave front, due to the differences in local Alfvén speed, generates nearly parallel to the magnetic field electrostatic fields, which accelerate electrons via Landau damping. Surprisingly, amplitude decay law in the inhomogeneous regions, in the kinetic regime, is the same as in the MHD approximation described by Heyvaerts and Priest (1983).
description: Final, accepted in New J. Phys., version, New IMPORTANT material added. Also can be downloaded from http://www.iop.org/EJ/abstract/1367-2630/7/1/079/
Comparison of H∞ and μ-synthesis Control Design for Quarter Car Active Suspension System using Simulink.pdf
Creators: name: Mustefa Jibril
Publisher: name: figshare
Year: 2020
Subjects: subject: 90602 Control Systems, Robotics and Automation
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: To improve road dealing with and passenger consolation of a vehicle, a suspension system is supplied. An
active suspension system is taken into consideration better than the passive suspension system. In this
paper, an active suspension system of a linear quarter vehicle is designed, that's issue to exclusive
disturbances on the road. Since the parametric uncertainty within the spring, the shock absorber and the
actuator has been taken into consideration, robust control is used. H∞ and µ-Synthesis controllers of are
used to improve using consolation and road dealing with potential of the vehicle, in addition to confirm the
sturdy stability and overall performance of the system. In the H∞ design, we designed a driving force for
passenger consolation and to preserve the deflection of the suspension small and to reduce the disturbance
of the road to the deflection of the suspension. For the µ synthesis system, we designed a controller with
hydraulic actuator and uncertainty model. We designed a MATLAB / SIMULINK model for the active
suspension system with the H∞ and µ-synthesis controllers we tested the use of 4 road disturbance inputs
(bump, random, sinusoidal pavement and slope) for deflection of the suspension, body acceleration and
body travel for passive, active suspension with controller and active suspension without controller. Finally,
we evaluate the H∞ and µ-synthesis controllers with a Simulink model for suspension deflection, body
acceleration and body travel simulation, and the result suggests that both designs offer correct overall
performance, however the H∞ controller has superior overall performance as compared to the µ-synthesis
controller.
Economia matematica: una visione personale. (A personal perspective on mathematical economics)
Creators: name: GOODWIN, R.
Publisher: name: Moneta e Credito
Year: 2013
Subjects: subject: Richard Goodwin, biography, recollections
subject: B31, C00

description: Il documento è un contributo ad una serie di ricordi e riflessioni sulle esperienze professionali di illustri economisti con Banca Nazionale del Lavoro Quarterly Review iniziati nel 1979. In esso Richard Goodwin offre una retrospettiva sul suo sviluppo intellettuale . The paper is a contribution to a series of recollections and reflections on the professional experiences of distinguished economists which the Banca Nazionale del Lavoro Quarterly Review started in 1979. In it Richard Goodwin offers a retrospective on his intellectual development. JEL: B31, C00
description: Moneta e Credito, V. 38, N. 151 (1985)
On the Power of Unambiguity in Büchi Complementation
Creators: name: Li, Yong
name: Vardi, Moshe Y.
name: Zhang, Lijun
Publisher: name: arXiv
Year: 2020
Subjects: subject: Formal Languages and Automata Theory (cs.FL)
subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: In this work, we exploit the power of \emph{unambiguity} for the complementation problem of Büchi automata by utilizing reduced run directed acyclic graphs (DAGs) over infinite words, in which each vertex has at most one predecessor. We then show how to use this type of reduced run DAGs as a \emph{unified tool} to optimize \emph{both} rank-based and slice-based complementation constructions for Büchi automata with a finite degree of ambiguity. As a result, given a Büchi automaton with $n$ states and a finite degree of ambiguity, the number of states in the complementary Büchi automaton constructed by the classical rank-based and slice-based complementation constructions can be improved, respectively, to $2^{O(n)}$ from $2^{O(n\log n)}$ and to $O(4^n)$ from $O((3n)^n)$.
description: In Proceedings GandALF 2020, arXiv:2009.09360
Problemi strutturali nella crisi odierna. (Structural problems in the crisis)
Creators: name: STEINDL, J.
Publisher: name: Moneta e Credito
Year: 2013
Subjects: subject: Debt crisis, structural problems
subject: F34, G01

description: In tutto il mondo l'industria siderurgica, i cantieri navali, le industrie di veicoli a motore e delle materie plastiche e così via sono in difficoltà. Ciò che può essere nuovo, tuttavia, è che il problema strutturale appare ora non solo nei suoi aspetti industriali e regionali, ma anche nel suo aspetto di organizzazione - rappresenta la crisi delle grandi imprese. Questo documento si occupa di questi vari aspetti, a sua volta, anche se sono così strettamente collegati da essere inseparabili. All over the world the steel industry, the shipyards, the motor car and plastics industries and so on are in difficulty. What may be new, however, is that the structural problem appears now not only in its industrial and regional aspects, but also in its aspect of organisation - the crisis of the large concerns. This paper deals with these various aspects in turn, although they are so closely connected as to be inseparable. JEL: F34, G01
description: Moneta e Credito, V. 38, N. 151 (1985)
2017 Outlook of the U.S. and World Sugar Markets, 2016-2026
Creators: name: Taylor, Richard D.
name: Taylor, Richard D.
Publisher: name: Unknown
Year: 2017
Subjects: subject: Consumer/Household Economics
subject: Crop Production/Industries
subject: Demand and Price Analysis
subject: sugar
subject: production
subject: exports
subject: consumption
subject: ending stocks

description: This report evaluates the U.S. and world sugar markets for 2016-2026 using the Global Sugar Policy Simulation Model. This analysis is based on assumptions that general economic conditions, agricultural policies, population growth, weather conditions, and technological changes remain at the long-run conditions. Both the U.S. and world sugar economies are predicted to remain constant over the next ten years. World sugar prices increased from 18.7 cents/lb in 2009 to 27.0 cents/lb in 2010 and 32.0 cents/lb in 2011 before falling to 16.8 cents/lb in 2014, and 13.4 cents/lb in 2015. Prices increased to 16.6 cents/lb in 2016. World sugar production increased 3.0% in 2016 while consumption increased by less than 1%. World sugar prices are expected to decrease to 13.7 cents/lb by 2026. The U.S. wholesale price of sugar is projected to increase from 30.6 cents/lb in 2016 to near 33.1 cents/lb by 2026. It is projected that Mexican exports to the United States will increase from 1.60 million metric tons in 2016 to 1.93 million metric tons in 2026. World trade volumes of sugar are expected to increase throughout the forecast period.
COMPARISONS OF FUZZY MRAS AND PID CONTROLLERS FOR EMS MAGLEV TRAIN.pdf
Creators: name: Mustefa Jibril
Publisher: name: figshare
Year: 2020
Subjects: subject: 90602 Control Systems, Robotics and Automation
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: In this paper, a Magnetic Levitation (MAGLEV) train is designed with a first degree of freedom electromagnetbased totally system that permits to levitate vertically up and down. Fuzzy logic, PID and MRAS controllers are
used to improve the Magnetic Levitation train passenger comfort and road handling. A matlab Simulink model is
used to compare the performance of the three controllers using step input signals. The stability of the Magnetic
Levitation train is analyzed using root locus technique. Controller output response for different time period and
change of air gap with different time period is analyzed for the three controllers. Finally the comparative simulation
and experimental results demonstrate the effectiveness of the presented fuzzy logic controller.
La competitività delle imprse manufatturiere statunitensi. (The competitive position of U.S. manufacturing firms)
Creators: name: LIPSEY, R.E.
name: KRAVIS, I.B.
Publisher: name: Moneta e Credito
Year: 2013
Subjects: subject: US manufacturing, competitiveness, production base, multinationals
subject: F23, L60

description: Con l'alto valore costante del dollaro recentemente siè verificata la preoccupazione per l' impatto a lungo termine sulla competitività dei produttori statunitensi. Questo studio distingue tra la competitività delle imprese statunitensi ed i vantaggi degli Stati Uniti come una base di produzione . Si è constatato che , anche se la quota statunitense del commercio mondiale è diminuita a partire dai primi anni 1970, la quota detenuta da imprese americane, al contrario di imprese che producono negli Stati Uniti, è aumentato. Si sostiene che le multinazionali statunitensi hanno superato il calo del vantaggio comparativo degli Stati Uniti come base di produzione spostando all'estero. With the continuing high value of the dollar there has recently been concern over the long-term impact on the competitiveness of US manufacturers. This study distinguishes between the competitiveness of US firms and the advantages of the United States as a production base. It is found that, although the US share of world trade has declined since the early 1970s, the share held by US firms, as opposed to firms producing in the United States, has increased. It is argued that US multinationals have overcome the decline in the comparative advantage of the United States as a production base by moving abroad. JEL: F23, L60
description: Moneta e Credito, V. 38, N. 151 (1985)
title: Verkehrsmittelwahl der Arbeitsbevölkerung in Sofia
Creators: name: Chirenska, Tsvetelina
Publisher: name: TU Wien
Year: 2015
Subjects: subject: Verkehrsmittelwahl

description: Die Arbeit soll Aufschluss über die Verkehrsmittelwahl von Beschäftigten in Sofia geben. Hier wird beleuchtet, welche Verkehrsmittel der Arbeitsbevölkerung zur Verfügung stehen und welche sie benutzt. Um dies zu überprüfen wurde eine Umfrage mittels eines Fragebogens durchgeführt. Mit Hilfe des Fragebogens, der von 312 Personen beantwortet wurde konnte erhoben werden, welche Verkehrsmittel benutzt werden und warum manche besser angenommen werden als andere. Speziell wurde mit dieser Diplomarbeit ein Schwerpunkt auf den Arbeitsverkehr der Sofioter gelegt, denn dieser Verkehr ist ein wesentlicher Teil des gesamten Modal Split. Anhand dieser Befragung in mehr als 20 Staatsunternehmen, Privatunternehmen und kleine Firmen ist eine Erhebung der Arbeitswege in Sofia durchgeführt. Am Anfang dieser Arbeit wird eine kurze Darstellung der bulgarischen Hauptstadt Sofia und der österreichischen Bundeshauptstadt Wien gemacht. Weiteres wurden in dieser Diplomarbeit die beiden Städten in punkto Mobilität verglichen. Besonders auffällig ist, dass Sofia einen sehr hohen Motorisierungsgrad aufweist und hier wurde der Motorisierungsgrad von Wien mit dem Motorisierungsgrad von Sofia verglichen. In dieser Arbeit sind auch die theoretischen Einflussfaktoren die auf die Verkehrsmittelwahl behandelt worden. Schließlich wurden die Daten der Erhebung ausführlich beschrieben und analysiert.
description: This thesis gives information about the choice of passenger transport modes. The thesis sheds light on the available to the citizens transport modes and the ones they use most. To confirm these statements a survey among 312 people was conducted. With the help of this survey a conclusion is drawn about, which transport modes are used and why some are more preferred then others. The paper investigates particularly the transportation of the working citizens, as they are a significant part of the modal split. Based on the survey, conducted amongst 20 State- and private enterprises and small firms, information is drawn about the routes used from the working citizens in Sofia. At the beginning of the thesis the Bulgarian capital Sofia and the Austrian capital Vienna are briefly described. Further a comparison between both cities is made based on mobility. It is of great interest that Sofia shows high motorization rates, thus the motorization rates of both cities are compared. The thesis also analyzes the theoretical factors that influence the choice of transport mode. At the end the data drawn from the survey is thoroughly described and analyzed.
H ∞ and μ -synthesis Design of Quarter Car Active Suspension System.pdf
Creators: name: Mustefa Jibril
Publisher: name: figshare
Year: 2020
Subjects: subject: 90602 Control Systems, Robotics and Automation
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: To improve the street managing and passenger comfort of a vehicle, a suspension system is furnished. An
active suspension device is considered to be better than the passive suspension device. In this paper, 2
degree of freedom of an active suspension system of a linear vehicle are designed, that's challenge to oneof-a-kind disturbances on the road. Since the parametric uncertainty inside the spring, the shock absorber,
the mass and the actuator has been taken into consideration, robust control is used. In this paper, H∞ and
µ-synthesis controllers are used to enhance using consolation and the capability to force the car on the
road. For the analysis of the time domain, a MATLAB script software become used and a check with 4
road disturbance inputs (bump, random, sinusoidal and harmonic) became carried out for suspension
deflection, body acceleration and travel of the body for the energetic suspension with the H∞ controller
and the active suspension with the µ-synthesis controller and the comparative simulation and the reference
consequences display the effectiveness of the active suspension system with the µ-synthesis controller.
Femtoscopy with identified hadrons in pp, pPb, and peripheral PbPb collisions in CMS
Creators: name: Siklér, Ferenc
name: Siklér, Ferenc
Publisher: name: Unknown
Year: 2016
Subjects: Research and Development/Tech Change/Emerging Technologies

description: Short range correlations of identified charged hadrons in pp (p s = 0.9, 2.76, and 7 TeV), pPb (p sNN = 5.02 TeV), and peripheral PbPb collisions (p sNN = 2.76 TeV) are studied with the CMS detector at the LHC. Charged pions, kaons, and protons at low pT and in laboratory pseudorapidity jj < 1 are identified via their energy loss in the silicon tracker. The two-particle correlation functions show effects of quantum statistics, Coulomb interaction, and also indicate the role of multi-body resonance decays and mini-jets. The characteristics of the one-, two-, and three-dimensional correlation functions are studied as a function of pair momentum and the charged-particle multiplicity of the event. The extracted radii are in the range 1-5 fm, reaching highest values for very high multiplicity pPb, also for similar multiplicity PbPb collisions, and decrease with increasing kT. The dependence of radii on multiplicity and kT largely factorizes and appears to be insensitive to the type of the colliding system and center-of-mass energy.
Perturbative neutrino pair creation by an external source
Creators: name: Koers, Hylke
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We consider the rate of fermion-antifermion pair creation by an external field. We derive a rate formula that is valid for a coupling with arbitrary vector and axial vector components to first order in perturbation theory. This is then applied to study the creation of neutrinos by nuclear matter, a problem with astrophysical relevance. We present an estimate for the creation rate per unit volume, compare this to previous results and comment on the role of the neutrino mass.
description: 7 pages, 1 figure, REVTeX4
Machine Learning for Intelligent Optical Networks: A Comprehensive Survey
Creators: name: Gu, Rentao
name: Yang, Zeyuan
name: Ji, Yuefeng
Publisher: name: arXiv
Year: 2020
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences
subject: C.2.1; C.2.3

description: With the rapid development of Internet and communication systems, both in services and technologies, communication networks have been suffering increasing complexity. It is imperative to improve intelligence in communication network, and several aspects have been incorporating with Artificial Intelligence (AI) and Machine Learning (ML). Optical network, which plays an important role both in core and access network in communication networks, also faces great challenges of system complexity and the requirement of manual operations. To overcome the current limitations and address the issues of future optical networks, it is essential to deploy more intelligence capability to enable autonomous and exible network operations. ML techniques are proved to have superiority on solving complex problems; and thus recently, ML techniques have been used for many optical network applications. In this paper, a detailed survey of existing applications of ML for intelligent optical networks is presented. The applications of ML are classified in terms of their use cases, which are categorized into optical network control and resource management, and optical networks monitoring and survivability. The use cases are analyzed and compared according to the used ML techniques. Besides, a tutorial for ML applications is provided from the aspects of the introduction of common ML algorithms, paradigms of ML, and motivations of applying ML. Lastly, challenges and possible solutions of ML application in optical networks are also discussed, which intends to inspire future innovations in leveraging ML to build intelligent optical networks.
Canonical DSR
Creators: name: Hinterleitner, Franz
Publisher: name: arXiv
Year: 2004
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: For a certain example of a "doubly special relativity theory" the modified space-time Lorentz transformations are obtained from momentum space transformations by using canonical methods. In the sequel an energy-momentum dependent space-time metric is constructed, which is essentially invariant under the modified Lorentz transformations. By associating such a metric to every Planck cell in space and the energy-momentum contained in it, a solution of the problem of macroscopic bodies in doubly special relativity is suggested.
description: 11 pages
Excitation function of elastic pp scattering from a unitarily extended Bialas-Bzdak model
Creators: name: Nemes, Frigyes
name: Csörgő, Tamás
name: Csanád, Máté
name: Nemes, Frigyes
name: Csörgő, Tamás
name: Csanád, Máté
Publisher: name: Unknown
Year: 2016
Subjects: Research and Development/Tech Change/Emerging Technologies

description: The Bialas-Bzdak model of elastic proton-proton scattering assumes a purely imaginary forward scattering amplitude, which consequently vanishes at the diractive minima. We extended the model to arbitrarily large real parts in a way that constraints from unitarity are satised. The resulting model is able to describe elastic pp scattering not only at the lower ISR energies but also at p s =7 TeV in a statistically acceptable manner, both in the diractive cone and in the region of the rst diractive minimum. The total cross-section as well as the dierential cross-section of elastic proton-proton scattering is predicted for the future LHC energies of p s =8, 13, 14, 15 TeV and also to 28 TeV. A non-trivial, signicantly nonexponential feature of the dierential cross-section of elastic proton-proton scattering is analyzed and the excitation function of the non-exponential behavior is predicted. The excitation function of the shadow proles is discussed and related to saturation at small impact parameters.
Study of in-medium mass modification at J-PARC
Creators: name: Aoki, Kazuya
name: Aoki, Kazuya
Publisher: name: Unknown
Year: 2016
Subjects: Research and Development/Tech Change/Emerging Technologies

description: Study of in-medium mass modification has attracted interest in terms of the restoration of the spontaneously broken chiral symmetry, which is responsible for the generation of hadron mass. Many experiments were performed to measure in-medium property of hadrons but there is no consensus yet. JPARC E16 has been proposed to study in-medium property of vector mesons via dilepton decay channel. The status of spectrometer R & D is explained. Other related experiments planned at J-PARC are also introduced.
Low-Mass Quark Stars or Quark White Dwarfs
Creators: name: Alaverdyan, G. B.
name: Harutyunyan, A. R.
name: Vartanyan, Yu. L.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: An equation of state is considered that, in superdense nuclear matter, results in a phase transition of the first kind from the nucleon state to the quark state with a transition parameter Lambda> 3/2. A calculation of the integrated parameters of superdense stars on the basis of this equation of state shows that on the stable branch of the dependence of stellar mass on central pressure (dM/dPc> 0), in the low-mass range, following the formation of a tooth-shaped break (M = 0.08Msun, R = 200 km) due to quark formation, a new local maximum with Mmax = 0.082Msun and R = 1251 km is also formed. The mass and radius of the quark core of such a star turn out to be Mcore = 0.005Msun and Rcore = 1.7 km, respectively. Mass accretion in this model can result in two successive transitions to a neutron star with a quark core, with energy release like supernova outbursts.
description: 11 pages, 6 figures, 25 references
Declino del prodotto agricolo: misure e spiegazioni. ( Decline in the share of the agricultural product: measurements and explanations)
Creators: name: ERCOLANI, P.
Publisher: name: Moneta e Credito
Year: 2013
Subjects: subject: Agriculture, economic development, decline of agricultural, income growth
subject: N50, O13, Q10

description: La riduzione della quota dell'agricoltura del prodotto costituisce il cambiamento più importante nella struttura dell'offerta associato con la crescita del reddito. Questo è così costante che può essere considerato una delle "leggi" dell'economia, tuttavia, al fine di comprendere un fenomeno complesso in termini di sviluppo economico, la ricerca di uniformità dovrebbe rappresentare solo l'inizio, non la conclusione dell'analisi. Questo lavoro si concentra sul modello di agricoltura di quota, tra paesi nel tempo, e considera i fattori che determinano il relativo declino del prodotto agricolo. I singoli autori hanno contribuito alla determinazione delle differenze sistemiche tra i paesi dell'agricoltura quota di prodotto. Poi, una valutazione quantitativa dei fattori che hanno causato il declino è presentato. The reduction of agriculture’s share of product constitutes the most important change in the structure of supply associated with income growth. This is so constant that it can be considered one of the “laws” of economics, however, in order to understand such a complex phenomenon in terms of economic development, the search for uniformity should represent only the beginning, not the conclusion of the analysis. This work focuses on the pattern of agriculture’s share, both among countries and over time, and considers the factors which determine the relative decline of the agricultural product. The author singles out the factors other than income that have contributed to the determination of systemic differences among countries in agriculture’s share in product. Then, a quantitative assessment of the factors which have caused the decline is presented. JEL: N50, O13, Q10
description: Moneta e Credito, V. 38, N. 151 (1985)
Robust Control Theory Based Performance Investigation of an Inverted Pendulum System using Simulink.pdf
Creators: name: Mustefa Jibril
Publisher: name: figshare
Year: 2020
Subjects: subject: 90602 Control Systems, Robotics and Automation
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: In this paper, the performance of inverted pendulum have been Investigated using robust control theory. The robust controllers
used in this paper are H∞ Loop Shaping Design Using Glover McFarlane Method and mixed H∞ Loop Shaping Controllers.
The mathematical model of Inverted Pendulum, a DC motor, Cart and Cart driving mechanism have been done successfully.
Comparison of an inverted pendulum with H∞ Loop Shaping Design Using Glover McFarlane Method and H∞ Loop Shaping
Controllers for a control target deviation of an angle from vertical of the inverted pendulum using two input signals (step and
impulse). The simulation result shows that the inverted pendulum with mixed H∞ Loop Shaping Controller to have a small rise
time, settling time and percentage overshoot in the step response and having a good response in the impulse response too.
Finally the inverted pendulum with mixed H∞ Loop Shaping Controller shows the best performance in the overall simulation
result.
Revisiting supernova constraints on a light CP-even scalar
Creators: name: Dev, P. S. Bhupal
name: Mohapatra, Rabindra N.
name: Zhang, Yongchao
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: A light CP-even Standard Model (SM) gauge-singlet scalar $S$ can be produced abundantly in the supernova core, via the nucleon bremsstrahlung process $N N \to N N S$, due to its mixing with the SM Higgs boson. Including the effective $S$ coupling to both nucleons and the pion mediators, we evaluate the production amplitude for the $S$ particle and point out a key difference with the well-known light CP-odd scalar (axion) and vector boson (dark photon) cases. Taking the subsequent decay and re-absorption of $S$ into account, we present a complete calculation of the energy loss rate for the $S$ particle. We then use the SN1987A luminosity constraints to derive updated supernova limits on the mixing of the scalar $S$ with the SM Higgs boson. We find that the mixing angle $\sinθ$ with the SM Higgs is excluded only in the narrow range of $3.9 \times 10^{-7}$ to $7.0 \times 10^{-6}$, depending on the scalar mass up to about 147 MeV, beyond which the supernova limit disappears.
description: 22 pages, 6 figures, one error fixed in Eq. (4.3), Figures 4, 5 and 6 updated
SELECCION DE GERMOPLASMA DE HABICHUELA PARA RESISTENCIA A MUSTIA HILACHOSA USANDO HOJAS TRIFOLIADAS
Creators: name: De J. Bautista Perez, M.
name: Echavez-Badel, R.
name: Alanreda, M.
name: Beaver, J. S.
name: De J. Bautista Perez, M.
name: Echavez-Badel, R.
name: Alanreda, M.
name: Beaver, J. S.
Publisher: name: Unknown
Year: 1997
Subjects: Crop Production/Industries
Food Security and Poverty
Research and Development/Tech Change/Emerging Technologies

description: Rhizoctonia solani Kuhn [teleomorph: Thanatephorus cucumeris (Frank) Donk] causing root rot and web blight (WB) on common bean (Phaseolus vulgaris L) have become very important in Puerto Rico. The objective of this research was to test a new methodology for screening for web blight resistance. Several methods for screening common bean for web blight reaction have been reported in Colombia, Costa Rica and Puerto Rico. These greenhouse conditions were effective for inheritance studies but are impractical and tedious when a. large number of lines need to be evaluated. We used a detached leaf method recently proposed by Steadman et al., as a technique to evaluated common bean lines and cultivars for resistance to white moid (Sclerotinia sclerotiorum). The youngest fully expanded trifoliolate leaves from bean plants grown in the field were detached and placed in orchid tubes containing 10 ml of tab water. Aluminum pans (30.5 χ 39 χ 9 cm) were lined with paper towels, and four 10 cm-petri dishes were inverted and placed on the bottom of each pan. These petri dishes were used to prevent the trifoliolate from touching the wet paper towel. Four 4mm-disks of potato dextrose agar (PDA) from 6 old-day cultures of Rs 011 and 012 were placed near the center of two foliolates of each leaf, the third foliolate was inoculated with PDA only. Water was added to the bottom of each pan and then covered tightly with a plastic bag to provide a high humidity environment. A constant room temperature of 24"C and diurnal room lighting with daylight were the incubation conditions. The length and width of the lesions were measured at 24, 36 and 48 hours after inoculation. Two bean lines from Puerto Rico, 9418-2 and 9607-27 and two cultivars from CIAT, Talamanca and Mus 138 were evaluated in each pan. A randomized complete block design with 4 replications was used. Significant differences in lesion length and width (P<0,05) among hencitypes were obtained. Mus 138 showed the highest level of resistance, followed by 9607-27 and Talamanca. 9418-2 line was highly susceptible to WB. In spite that there were not significant differences for WB lesions between isolates, the Rs 012 produced larger lesions than those of the Rs 011 isolate. No lesions were observed on the foliolate inoculated with PDA alone. This inoculation method should provide an effective and rapid technique for WB screening of bean lines and cultivars.
Matrix product operator symmetries and intertwiners in string-nets with domain walls
Creators: name: Lootens, Laurens
name: Fuchs, Jürgen
name: Haegeman, Jutho
name: Schweigert, Christoph
name: Verstraete, Frank
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: Quantum Algebra (math.QA)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We provide a description of virtual non-local matrix product operator (MPO) symmetries in projected entangled pair state (PEPS) representations of string-net models. Given such a PEPS representation, we show that the consistency conditions of its MPO symmetries amount to a set of six coupled equations that can be identified with the pentagon equations of a bimodule category. This allows us to classify all equivalent PEPS representations and build MPO intertwiners between them, synthesising and generalising the wide variety of tensor network representations of topological phases. Furthermore, we use this generalisation to build explicit PEPS realisations of domain walls between different topological phases as constructed by Kitaev and Kong [Commun. Math. Phys. 313 (2012) 351-373]. While the prevailing abstract categorical approach is sufficient to describe the structure of topological phases, explicit tensor network representations are required to simulate these systems on a computer, such as needed for calculating thresholds of quantum error-correcting codes based on string-nets with boundaries. Finally, we show that all these string-net PEPS representations can be understood as specific instances of Turaev-Viro state-sum models of topological field theory on three-manifolds with a physical boundary, thereby putting these tensor network constructions on a mathematically rigorous footing.
description: 42 pages, some figures. v3: SciPost resubmission
Time dependent numerical model for the emission of radiation from relativistic plasma
Creators: name: Pe'er, Asaf
name: Waxman, Eli
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We describe a numerical model constructed for the study of the emission of radiation from relativistic plasma under conditions characteristic, e.g., to gamma-ray bursts (GRB's) and active galactic nuclei (AGN's). The model solves self consistently the kinetic equations for e^\pm and photons, describing cyclo-synchrotron emission, direct Compton and inverse Compton scattering, pair production and annihilation, including the evolution of high energy electromagnetic cascades. The code allows calculations over a wide range of particle energies, spanning more than 15 orders of magnitude in energy and time scales. Our unique algorithm, which enables to follow the particle distributions over a wide energy range, allows to accurately derive spectra at high energies, >100 \TeV. We present the kinetic equations that are being solved, detailed description of the equations describing the various physical processes, the solution method, and several examples of numerical results. Excellent agreement with analytical results of the synchrotron-SSC model is found for parameter space regions in which this approximation is valid, and several examples are presented of calculations for parameter space regions where analytic results are not available.
description: Minor changes; References added, discussion on observational status added. Accepted for publication in Ap.J
INFLUENCE OF PHOSPHORUS FERTILITY REGIMES AND COMMON LAMBSQUARTERS fChenopodium album) DENSITIES ON LETTUCE (Lactuca sntiva) YIELDS
Creators: name: Santos, B. M.
name: Morales-Payan, J. P.
name: Dusky, J. A.
name: Stall, W. M.
name: Santos, B. M.
name: Morales-Payan, J. P.
name: Dusky, J. A.
name: Stall, W. M.
Publisher: name: Unknown
Year: 1997
Subjects: Crop Production/Industries
Farm Management
Land Economics/Use

description: Field trial were conducted in low-phosphorus (P) organic soils to determine the influence of two Ρ fertility regimes and five lambsquarters population densities on lettuce marketable yields. Phosphorus was either banded (125 Kg P/ha) or broadcast (250 Kg P/ha) prior to lettuce planting. Lambsquarters population densities of 0, 2, 4, 8 or 16 plants per 5.4 m2 were allowed to interfere with "South Bay" lettuce within each Ρ regime. Marketable lettuce yield and head number were collected 8 weeks after lettuce emergence. Results indicate that banding Ρ can reduce the negative impact of lambsquarters on lettuce. In all cases, lettuce yields increased approximately 13% when Ρ was banded. At the same time, when Ρ was banded no differences were observed between 2 lambsquarters per 5.4 m* and the weed-free control. However, when Ρ was broadcast, 2, 4, and 8 lambsquarters per 5.4 m2 were enough to reduce lettuce marketable yield in about 33, 50 and 65%, respectively. No significant differences were observed between 8 and 16 lambsquarters per 5.4 m2 when Ρ was broadcast. Maximum lettuce yield reductions occurred at either 4, 8, or 16 lambsquarters per 5.4 mJ when Ρ was banded, corresponding to approximately 34%.
L'evoluzione del sistema monetario dell'Arabia Saudita. (The evolution of the Saudi Arabian monetary system)
Creators: name: AL-TIMIMI, W.A.
Publisher: name: Moneta e Credito
Year: 2013
Subjects: subject: Saudi Arabia, banking system, financial development
subject: E42, E44

description: Anche se l'Arabia Saudita ha accumulato enormi riserve di valuta estera , il suo sistema finanziario è ancora primitivo sotto molti aspetti. Ciò ha portato gran parte di queste riserve ad essere re-investite in centri finanziari in tutto il mondo. Molti dei principi che regolano il funzionamento del sistema bancario saudita non sono cambiate in 25 anni dal momento in cui il paese era economicamente sottosviluppato. L'autore ripercorre lo sviluppo della moneta e sistema bancario del paese dopo l'introduzione di una moneta nazionale nel 1925. Although Saudi Arabia has accumulated massive reserves of foreign currency, its financial system is still primitive in many respects. This has resulted in much of these reserves being re-invested in financial centres around the world. Many of the principles which govern the operation of the Saudi banking system have not changed in 25 years from the time when the country was economically underdeveloped. The author traces the development of the country's money and banking system since the introduction of a national currency in 1925. JEL: E42, E44
description: Moneta e Credito, V. 38, N. 151 (1985)
HONGOS ENTOMOPATOGENOS DE PLUTELIA XYLOSTEIJA (L.) (LEPIDOPTERA: PLUTELLIDAE) EN PUERTO RICO
Creators: name: Bonet Talavera, M. E.
name: Armstrong, A.
name: Bonet Talavera, M. E.
name: Armstrong, A.
Publisher: name: Unknown
Year: 1997
Subjects: Crop Production/Industries

description: Se realizaron varios catastros en siembras establecidas de repollo intercalado con brécol para determinar la presencia de hongos endémicos que afecten las larvas y pupas de Plutella xylostella en Puerto Rico. Para esto se establecieron dos siembras de repollo intercalado con brécol en la Subestaciôn Experimental Agricola de Isabela de enero a mayo 1994 y diciembre 1994 a marzo 1995. El porcentaje de larvas y pupas de apariencia enferma fue de 2.6% en repollo y 1.78% en brécol. De este porcentaje se encontrô que el 64% en repollo y 69% en brécol estaban asociados con hongos. Se aislaron los hongos Paecilomyces fumosoroseus, P. farinosus, Metarhizium anisopliae, Fusarium proliferatum, F. pallidoroseum, F. oxysporum, F. solani, Pénicillium pinophilnm, Gliocladium catenulatum y Cladosporium tenuissimum asociados a las larvas y pupas muertas.
An effective guidance strategy for abstraction-guided simulation
Creators: name: De Paula, Flavio M
Publisher: name: University of British Columbia
Year: 2011

description: Despite major advances in formal verification, simulation continues to be the dominant workhorse for functional verification. Abstraction-guided simulation has long been a promising framework for leveraging the power of formal techniques to help simulation reach difficult target states (assertion violations or coverage targets): model checking a smaller, abstracted version of the design avoids complexity blowup, yet computes approximate distances from any state of the actual design to the target; these approximate distances are used during random simulation to guide the simulator. Unfortunately, the promise has yet to be realized, as the performance of previous work has been unreliable — sometimes great, sometimes poor. The problem is the guidance strategy. In this thesis, we first develop a platform to enable flexible exploration of abstraction-guided simulation — different guidance heuristics and formal tools are easily inserted — while providing the capacity, speed, and Verilog compatibility of a leading industry-standard (logic-simulation) tool, Synopsys VCS. Then, we start by exploring some greedy heuristics and find that they tend to perform poorly, adding too much search overhead for limited ability to escape dead ends (local optima). Based on these experiments, we propose a new guidance strategy, which pursues a more global search and is better able to avoid getting stuck. Experimental results show that our new guidance strategy is highly effective in most cases that are hard for random simulation and beyond the capacity of formal verification.
Auf dem Weg zu gesunder Luft: Wie die aktualisierte EU-Luftqualitätsrichtlinie die Luftqualität verbessern wird
Creators: name: Baltruks, Dorothea
name: Jung, Marie
name: Bud, Emma
Publisher: name: Zenodo
Year: 2024

description: Im Oktober 2024 hat der Rat der Europäischen Union der novellierten Luftqualitätsrichtlinie zugestimmt und damit den Gesetzgebungsprozess abgeschlossen. Dieser Policy Brief gibt einen detaillierten Überblick über die Änderungen, die die Novellierung für die Bevölkerungsgesundheit und in Bezug auf die Umsetzung auf kommunaler, Länder- und Bundesebene beinhaltet. Wir danken ClientEarth, deren juristische Analyse der Richtlinie in diesem Policy Brief enthalten ist.
Restricted Color $n$-color Compositions
Creators: name: Hopkins, Brian
name: Wang, Hua
Publisher: name: arXiv
Year: 2020
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05A19 (Primary) 05B45, 11B75 (Secondary)

description: Agarwal introduced $n$-color compositions in 2000 and most subsequent research has focused on restricting which parts are allowed. Here we focus instead on restricting allowed colors. After three general results, giving recurrence formulas for the cases of given allowed colors, given prohibited colors, and colors satisfying modular conditions, we consider several more specific conditions, establishing direct formulas and connections to other combinatorial objects. Proofs are combinatorial, mostly using the notion of spotted tilings introduced by the first named author in 2012.
description: 17 pages, 10 figures
title: Confidential desktop: towards an access control framework for preserving data confidentiality based on environmental conditions
Creators: name: Weiß, Sophie
Publisher: name: TU Wien
Year: 2015
Subjects: subject: Security
subject: Authentication
subject: Confidentiality
subject: Continuous Authentication
subject: Context-aware Access Control

description: Especially in security-critical industries, companies want to ensure that company- internal data remain hidden from unauthorized eyes, e.g., if external workers like cleaning staff are entering critical areas. If an increased security standard is mandatory at the office, it must be ensured that non-authorized persons have no possibility to get access to confidential data, which is displayed on the computer screen. This thesis describes an approach for preserving screen privacy by implementing a context-aware access control framework called Confidential Desktop, which continuously checks whether the user is alone at the office or not. This is done by detecting predefined intruder's activities by the use of different features like detecting faces, motion, sounds and bluetooth devices. The feasibility is shown in simulated scenarios that even with existing standard office hardware and state-of-the-art methods, intruder's activities can be detected by the framework in real-time. Thus the proposed solution can control the access to displayed data and preserve the confidentiality of sensitive information from prying eyes.
MANAGING A FRAGILE ECOSYSTEM FOR SUSTAINABLE AGRICULTURAL PRODUCTION
Creators: name: Paul, C. L.
name: Bullen, C.
name: Wickham, C.
name: Fletcher, R.
name: Adams, H.
name: Ross, J.
name: Simpson, L.
name: Paul, C. L.
name: Bullen, C.
name: Wickham, C.
name: Fletcher, R.
name: Adams, H.
name: Ross, J.
name: Simpson, L.
Publisher: name: Unknown
Year: 1997
Subjects: Agricultural and Food Policy
Farm Management
Research and Development/Tech Change/Emerging Technologies

description: The Intermediate Savannahs of Guyana are inhabited by resource poor fanners who lack physical and social infrastructural support. Added to this are problems of land tenure, credit and marketing and unfavourable agricultural policies. Farmers, therefore, are reluctant to adopt new technologies that demand high levels of resources. The Intermediate Savannahs have about 59,000' ha of acid, nutrient deficient sandy soils that with expert management and appropriate technologies can provide good yields of cereals, grain legumes and pasture forages. Research over the past twenty years coupled with experience from attempts at large agricultural enterprises indicate that a holistic and integrated approach to farming is necessary in such a fragile ecosystem. The Caribbean Agricultural Research and Development Institute (CARDI) in collaboration with the Guyana National Agricultural Research Institute (NARI) has recommended improved technological packages or systems for crop and livestock production. Sustainablility indicators show that although the packages contain some technologically sound practices, other factors1 such as socio-economics and policies that are external to the Intermediate Savannahs are important. Further research in various priority technical areas is recommended so as to improve the sustainability aspects of the systems.
Il dollaro: ieri oggi e domani. ( The dollar yesterday, today, and tomorrow)
Creators: name: KINDLEBERGER, C.P.
Publisher: name: Moneta e Credito
Year: 2013
Subjects: subject: Dollar, foreign exchange, international monetary system
subject: E42, F31, F33

description: Da oltre 20 anni il sistema del commercio mondiale è stato effettivamente basato su uno standard dollaro . La circolazione del dollaro negli scambi esteri di tutto il mondo è quindi di fondamentale importanza per il benessere del sistema monetario internazionale . L'autore è una delle principali autorità sul dollaro e ha scritto molto sulla gestione la sua circolazione . Presenta le sue opinioni sulle ragioni del dollaro dopo aver guadagnato questo ruolo , i suoi problemi attuali e le prospettive future . For over 20 years the world trading system has been effectively based on a dollar standard. The circulation of the dollar in the world's foreign exchanges is thus of crucial importance to the well-being of the international monetary system. Both shortages and gluts create problems which can inhibit world trade. The author is a leading authority on the dollar and has written extensively on managing its circulation. He presents his views on the reasons for the dollar having gained this role, its present-day problems and future prospects. JEL: E42, F31, F33
description: Moneta e Credito, V. 38, N. 152 (1985)
AGRICULTURAL USE OF ORGANIC WASTES STABILIZED WITH FLUIDIZED BED COMBUSTION SOLID RESIDUES
Creators: name: Grillasca-Rodriguez, C.
name: Martinez, G. A.
name: Benitez, J.
name: Guzman, J. L.
name: Grillasca-Rodriguez, C.
name: Martinez, G. A.
name: Benitez, J.
name: Guzman, J. L.
Publisher: name: Unknown
Year: 1997
Subjects: Community/Rural/Urban Development
Research and Development/Tech Change/Emerging Technologies

description: The recycling of sewage sludge through agricultural lands has now resurfaced as one of the premier options for its disposal. Alkaline stabilization represents a feasible alternative for the transformation of these products into a stabilized pathogen-free material prior to their application to land. In this study, we evaluated the effectiveness of different mixing ratios of fly ash material to sludge in reducing pathogen levels and stabilizing a raw sewage sludge obtained from a treatment plant in Puerto Rico. The mixing ratios evaluated were: 2_1, 1:1, and 0.5:1 ash:siudge, calculated on a wet basis. Temperature and pH profiles for the first seven days after mixing were constructed on each case. Fecal coliform density was determined prior to mixing, and at 24 hours, 7 days, and 20 days «Liter mixing. In addition, the following parameters were measured: Total (Ca, Mg, Zn, Fe, Cu, Cd, Al,), available Ρ, NH4, NO3, electrical conductivity, moisture content, particle density, neutralizing value, organic matter content, and volatilization rate. Results indicate that the 1:1 mixture was more effective in achieving USEPA pathogen reduction standards. The chemical and physical properties of the resulting end-product make it a suitable liming agent with wide agricultural and industrial applications.