cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
PERFORMANCE INVESTIGATION OF H∞ CONTROLLERFOR QUARTER CAR SEMI-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: This paper affords the design and improvement of a semi-active suspension system for an automobile. The main
idea is to increase the semi-active suspension system damping vibration of the automobile body even as crossing
the bump and sine pavement on the road. This system is modelled for 1 / 4 car system after which the entire system
has been simulated usingMat lab/Simulink. It is used to physically simulate the quarter vehicle system of the
automobile and have a look at the time domain response to the road disturbances.H infinity controllers is used to
govern the damping properties of the semi-active suspension system mechanically. The system is designed in
contrast to the most of the available suspension systems using a third order hydraulic actuator. The proposed system
is compared with H2 optimal controller to test the performance of the system for the control targets suspension
deflection, body acceleration and body travel for the bump and sine road disturbances. The simulation result of this
studies reveal the efficiency of the advanced H∞controller for the quarter car semi-active suspension system.
Una nota sul debito pubblico in Italia. (A note on the Italian public debt)
Creators: name: GIAVAZZI, F.
Publisher: name: Moneta e Credito
Year: 2013
Subjects: subject: Italy, public debt, dynamic instability, policy, fiscal contraction
subject: H63

description: Il lavoro si occupa del livello e tasso di crescita attuale del debito pubblico in Italia . In primo luogo , cercando le prove disponibili , l'autore stabilisce le cause della rapida crescita del debito pubblico , e la misura in cui l'esperienza italiana è stata condivisa da altri paesi europei. Il problema di instabilità dinamica viene quindi affrontato. Infine , l'autore tenta di rispondere alla domanda se una contrazione fiscale ora è davvero una scelta politica ragionevole . The work deals with the current level and growth rate of Italy’s public debt. First, by looking at the evidence available, the author establishes the causes of the rapid growth in public debt, and the extent to which the Italian experience has been shared by other European countries. The issue of dynamic instability is then addressed. Finally, the author attempts to answer the question whether a fiscal contraction now is indeed a reasonable policy option. JEL: H63
description: Moneta e Credito, V. 37, N. 147 (1984)
Temperature- and quantum phonon effects on Holstein-Hubbard bipolarons
Creators: name: Hohenadler, Martin
name: von der Linden, Wolfgang
Publisher: name: arXiv
Year: 2004
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The one-dimensional Holstein-Hubbard model with two electrons of opposite spin is studied using an extension of a recently developed quantum Monte Carlo method, and a very simple yet rewarding variational approach, both based on a canonically transformed Hamiltonian. The quantum Monte Carlo method yields very accurate results in the regime of small but finite phonon frequencies, characteristic of many strongly correlated materials such as, e.g., the cuprates and the manganites. The influence of electron-electron repulsion, phonon frequency and temperature on the bipolaron state is investigated. Thermal dissociation of the intersite bipolaron is observed at high temperatures, and its relation to an existing theory of the manganites is discussed.
description: 12 pages, 7 figures; final version, accepted for publication in Phys. Rev. B
Convergenze, divergenze e riallineamenti nella teorica macroeconomica inglese. (Convergence, divergence and realignment in British macroeconomics)
Creators: name: COBHAM, D.
Publisher: name: Moneta e Credito
Year: 2013
Subjects: subject: British macroeconomics. Keynesianism, Monetarism, U.K.
subject: E12, E13

description: In questo lavoro l' autore sostiene che le distinzione ancora frequente e semplicistica tra keynesiani e monetaristi che costituisce gran parte del popolare dibattito economico britannico è diventata gravemente fuorviante . I cambiamenti che hanno avuto luogo in macroeconomia britannici fin dai primi anni 1970 sono quindi indicati e alcuni dei fattori teorici ed empirici responsabili di questi cambiamenti sono suggeriti. L'autore presenta una breve caratterizzazione del keynesismo britannico e monetarismo al 1970 fine del 1960 / inizio , sostenendo che ci sono stati importanti elementi di convergenza . Egli procede per discutere alcuni degli sviluppi teorici e alcune delle esperienze di politica macroeconomica del Regno Unito che hanno contribuito a questa convergenza . Infine , egli considera se le etichette " keynesiani " e " monetarista " continuano ad essere rilevanti . In this paper the author argues that the still frequent and simplistic distinction between Keynesians and monetarists that makes up a large part of the British popular economic debate has become seriously misleading. Changes that have taken place in British macroeconomics since the early 1970s are thus indicated and some of the theoretical and empirical factors responsible for these changes are suggested. The author presents a brief characterisation of British Keynesianism and monetarism as of late 1960s/early 1970s, arguing that there have been important elements of convergence. He proceeds to discuss some of the theoretical developments and some of the experiences of UK macroeconomic policy which have contributed to this convergence. Finally, he considers whether the labels “Keynesian” and “monetarist” continue to be relevant. JEL: E12, E13
description: Moneta e Credito, V. 37, N. 147 (1984)
Segregation in fluidized versus tapped packs
Creators: name: Tarzia, Marco
name: Fierro, Annalisa
name: Nicodemi, Mario
name: Coniglio, Antonio
Publisher: name: arXiv
Year: 2004
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We compare the predictions of two different statistical mechanics approaches, corresponding to different physical measurements, proposed to describe binary granular mixtures subjected to some external driving (continuous shaking or tap dynamics). In particular we analytically solve at a mean field level the partition function of a simple hard sphere lattice model under gravity and we focus on the phenomenon of size segregation. We find that the two approaches lead to similar results and seem to coincide in the limit of very low shaking amplitude. However they give different predictions of the crossovers from Brazil nut effect to reverse Brazil nut effect with respect to the shaking amplitude, which could be detected experimentally.
description: to appear on Physical Review Letters
Nepeta hindostana var. woodrowii Santapau
Creators: name: Kumar, Anand
name: Maurya, Onkar Nath
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Lamiales
Lamiaceae
Nepeta
Nepeta hindostana
Nepeta hindostana (b.heyne ex roth) haines var. woodrowii (cooke) santapau

description: Nepeta hindostana (B.Heyne ex Roth) Haines var. woodrowii (Cooke) Santapau
 In The Flora of Purandhar: 110 (1957). — Basionym: Nepeta ruderalis Buch. -Ham. ex Benth. var. woodrowii Cooke, Flora of the Presidency of Bombay: 473 (1906).
 LECTOTYPE (DESIGNATED HERE). — India. Maharashtra, Satara district, Panchganis Ghat, 23.IX.1902, Mr. Bhide s.n. (lecto-, K [K000911185 image]!) (Fig. 3).
 RESIDUAL SYNTYPES. — India. Maharashtra, Pune district, on the walls of Sinhagad fort, 12 miles from Poona, 29.IX.1905, Mr. Bhide s.n. (syn-, K000911186 image!); “Poona” (Pune district), V.1880, G. M. Woodrow 476 (syn-, K000911183 image!).
REMARK
 Hooker (1885) noted under N. ruderalis that he had received the specimens collected by Mr. Woodrow from Pune district (‘Poona’) resembling the habit of N. ruderalis but with larger calyx and nutlets like N. bombaiensis Dalzell. Finally, Cooke (1906) described N. ruderalis var. woodrowii based on collection of Mr. Bhide from Sinhabad hill fort (4000 ft) near Pune district (‘Poona’), Panchgani hills (4000 ft) near Mahableshwar and Woodrow collection (No. 476) from Pune district (‘Poona’). We traced three collections (K000911183, K000911185 and K000911186) at K and we here lectotypify the name with Kew specimen (K000911185) bearing Cooke’s annotation in his own handwriting.
description: Published as part of Kumar, Anand & Maurya, Onkar Nath, 2020, Typification of two accepted names and one synonym in the genus Nepeta L., pp. 219-225 in Adansonia (3) (3) 42 (11) on page 224, DOI: 10.5252/adansonia2020v42a11, http://zenodo.org/record/4447881
Exploring self-efficacy beliefs in symbiotic collaboration with students: an action research project
Creators: name: Haro-Soler, María del Mar
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 470321
subject: Translation and interpretation studies

description: This paper presents a participatory action research project in which teacher-researchers, student-researchers and student-subjects collaborated on a research project in a working-group format to investigate constructs related to the translator's psychological 'self'. The pedagogical approach adopted for managing the working group, based on social constructivist principles and a view of knowledge development as an emergent, collaborative process, was found to have boosted the students' self-efficacy beliefs regarding themselves as researchers, as the results of a focus group analysis revealed. Moreover, through the symbiotic collaboration between teachers and students in the working group, a preliminary two-section questionnaire for measuring students' self-perceptions as translators was validated over the course of the project, thus enhancing the value of this research tool for studying learners' self-efficacy beliefs. A key focus of this chapter will be on a shift in emphasis from 'translator training' and 'training the translator trainer' towards 'translator edu-cation' and 'educating the translator educator'.
The populations of planetary nebulae in the direction of the Galactic bulge
Creators: name: Gorny, S. K.
name: Stasinska, G.
name: Escudero, A. V.
name: Costa, R. D. D.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have observed 44 planetary nebulae (PNe) in the direction of the Galactic bulge, and merged our data with published ones. We have distinguished, in the merged sample of 164 PNe, those PNe most likely to prtain physically to the Galactic bulge and those most likely to belong to the Galactic disk. We have determined the chemical composition of all the 164 objects in a coherent way. We looked for stellar emission features and discovered 14 new [WR] stars and 15 new weak emission line central stars. The analyzed data led us to the following conclusions: (1) The spectral type distribution of [WR] stars is very different in the bulge and in the disk of the Galaxy. However, the observed distributions are strongly dependent on selection effects. (2) The proportion of [WR] PNe is significantly larger in the bulge than in the disk. (3) The oxygen abundances in [WR] stars do no appear to be significantly affected by nucleosynthesis and mixing in the progenitors. (4) The O/H gradient of the Galactic disk PNe population flattens in the most internal parts of the Galaxy. (5) The median oxygen abundance in the bulge PN population is larger by 0.2 dex than in the disk population seen in the direction of the bulge. (6) Bulge PNe with smaller O/H tend to have smaller radial velocities. (7) The oxygen abundance distribution of bulge PNe is similar in shape to that of the metallicity distribution of bulge giants, but significantly narrower. (8) The location of SB 32 (PN G 349.7-09.1) in the (V_lsr, l_II) diagram and its low oxygen abundance argues that it probably belongs to the halo population.
description: 14 pages, 16 figures. Accepted for publication in A&A
Jungen als Bildungsverlierer? eine Untersuchung zu gechlechtsspezifischen Leistungsunterschieden
Creators: name: Frauenfelder, Manuela
Publisher: name: Zenodo
Year: 2013
Subjects: Sonderpädagogik
Schulische Heilpädagogik
Masterarbeit

description: Die vorliegende Literaturarbeit zeigt auf wie der Faktor Geschlecht bezüglich Bildungserfolg in aktuellen Forschungen dargestellt wird. Dabei liegt der Fokus auf den Jungen, welche geringere Leistungen zeigen als Mädchen. Ausserdem werden die Ursachen der geschlechtsspezifischen Leistungsunterschiede von Jungen anhand ausgewählter Fachliteratur analysiert. Folgende Aspekte gelten als Ursachenfaktoren für den schulischen Misserfolg der Jungen: Leistungsmotivation und Schulentfremdung, Geschlechterrollen, die Rolle der Peers, Schuldevianz und die Rolle der Lehrperson. Es zeigt sich, dass die Erklärungsfaktoren sehr komplex sind und Zusammenhänge auf den verschiedenen Ebenen, wie Gesellschaft, Familie und Schule bestehen.
Esistono i cicli lunghi? (Is there a long cycle?)
Creators: name: CLARK, C.
Publisher: name: Moneta e Credito
Year: 2013
Subjects: subject: Economic history, business cycle
subject: E32, F44, N10

description: E sisteun lungo ciclo ? Questa domanda è della massima importanza , non solo nella storia economica , ma nell'interpretazione della situazione attuale . È il rallentamento della produzione e del commercio mondiale negli ultimi dieci anni solo la conseguenza di una serie di contrattempi temporanei, i cui effetti possono essere corrette - o il mondo è sotto l'influenza di un lungo ciclo , i cui effetti saranno ancora con noi per molti anni nel futuro ? L'autore fornisce analisi , al fine di far luce su queste domande. Is there a long cycle? This question is of the greatest importance, not only in economic history, but in the interpretation of the current situation. Is the slowing down of world production and trade in the past decade just the consequence of a series of temporary mishaps, whose effects can be rectified - or is the world under the influence of a long cycle, whose effects will still be with us for many years into the future? The author provides analysis in order to shed light on these questions. JEL: E32, F44, N10
description: Moneta e Credito, V. 37, N. 147 (1984)
title: Auslegung einer Doppellavaldüse zur Flaregasabsaugung
Creators: name: Kornfeld, Matthias
Publisher: name: TU Wien
Year: 2015
Subjects: subject: Doppel-Lavaldüse
subject: kompressible Strömung
subject: double laval nozzle
subject: compressible flow

description: Die Möglichkeit der Nutzung einer doppelten Lavaldaüse zur Flaregasabsaugung wird untersucht. Zunächst wird die Strömung eindimensional modelliert. Die Ergebnisse werden mit einer CFD-Simulation verglichen.
description: The possibility to use a double Laval nozzle as an injector pump is investigated. The 1d theory of compressible flows will be used to find a basic configuration which will be studied in detail by CFD simulation.
Panici bancari del terzo tipo. (Banking panics of the third kind)
Creators: name: PARCU, P.L.
Publisher: name: Moneta e Credito
Year: 2013
Subjects: subject: Banking panics, public debt, Italy
subject: H63, G01

description: Il presente articolo sostiene che gli strumenti disponibili per le autorità monetarie possono combattere efficacemente solo un caso particolare di panico bancario . Vi sono , tuttavia , altri due casi in cui , nel rispetto delle regole istituzionali , non esiste una soluzione da trovare . Nel primo , la presenza di un grande debito a breve termine da parte dello Stato , mescolato con una diffusa tendenza inflazionistica , pone le basi per una situazione in cui la fiducia nel debito pubblico potrebbe vacillare . Nel secondo , quello che può essere definito come un "panico bancario del terzo tipo " , una crisi di risultati di fiducia in una corsa sul debito pubblico e innesca una crisi finanziaria . Il lavoro analizza alcune delle questioni relative alla gestione del debito pubblico in Italia che le autorità monetarie stanno affrontando . Essa conclude che le autorità che fare con qualcosa di molto simile a un "panico del terzo tipo " e potrebbero quindi essere spinto a promuovere importanti cambiamenti istituzionali , al fine di scongiurarlo The present article argues that the tools available to monetary authorities may effectively combat only one particular case of banking panics. There are, however, two other cases in which, within the institutional rules, there is no solution to be found. In the first, the presence of a large short-term debt on the part of the State, mixed with a widespread inflationary trend, lays the foundations for a situation where confidence in government debt may falter. In the second, what may be referred to as a "banking panic of the third kind", a crisis of confidence results in a run on government debt and triggers a financial crisis. The work analyses some of the questions regarding the management of public debt in Italy that monetary authorities are currently facing. It concludes that authorities are dealing with something very similar to a "panic of the third kind" and could thus be pushed to promote important institutional changes in order to avert it. JEL: H63, G01
description: Moneta e Credito, V. 37, N. 147 (1984)
INOS mediates increased RhoA expression and altered cell signaling in diabetic cardiomyopathy
Creators: name: Craig, Graham Peter
Publisher: name: University of British Columbia
Year: 2011

description: The RhoA/ROCK pathway is a well established signaling pathway which regulates cellular contractility. Previous studies, from this lab have shown that acute inhibition of ROCK improves heart function in 12 week STZ-diabetic rats. Here we wished to determine, 1) whether the RhoA/ROCK pathway was upregulated in the diabetic rat heart, 2) what factors may. be contributing to altered activity of this pathway during diabetes, and 3) determine the consequences of the altered RhoA/ROCK signaling might be. RhoA expression was significantly elevated in hearts and cardiomyocytes from rats with STZ-induced diabetes. Our preliminary studies also showed elevated iNOS expression in hearts from rats with STZ-induced diabetes. We hypothesized that NO from iNOS mediates elevated RhoA expression. This hypothesis is supported by a number of our observations. Elevated iNOS expression and activity was observed to be concomitant with increased RhoA expression in diabetic rat hearts. In cultured cardiomyocytes exposure to the NO donor, SNP, and the iNOS inducer, LPS , caused elevated RhoA expression. The iNOS inhibitor, L-NIL, blocked increased RhoA expression in LPS treated cardiomyocytes and in hearts from diabetic animals. Increases in RhoA expression correlated strongly with increased levels of active RhoA in diabetic cardiomyocytes. We also observed increased phosphorylated LIMK, a marker for activation of the RhoA/ROCK pathway. LIMK phosphorylation was reduced to levels similar to control after chronic treatment of diabetic rats with L-NIL, suggesting that iNOS also contributes to increased activity of this pathway in the STZ-diabetic rat heart. The actin cytoskeleton is a well established downstream target of the RhoA/ROCK pathway. The level of polymerized actin in diabetic rat cardiomyocytes was found to be significantly elevated, but was normalized after acute ROCK inhibition. Given this observation, we suggest that normalization of actin polymerization may contribute to ROCK inhibitor-mediated improvement of contractile function of hearts from diabetic rats. The findings presented in this thesis indicate a central role for iNOS in the upregulation of the RhoA/ROCK pathway, which is believed to contribute to impaired contractility in the diabetic heart. Our findings also support the suggestion that ROCK is an excellent therapeutic target in the treatment of diabetic cardiomyopathy.
Minimal Model for Fast Scrambling
Creators: name: Belyansky, Ron
name: Bienias, Przemyslaw
name: Kharkov, Yaroslav A.
name: Gorshkov, Alexey V.
name: Swingle, Brian
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We study quantum information scrambling in spin models with both long-range all-to-all and short-range interactions. We argue that a simple global, spatially homogeneous interaction together with local chaotic dynamics is sufficient to give rise to fast scrambling, which describes the spread of quantum information over the entire system in a time that is logarithmic in the system size. This is illustrated in two tractable models: (1) a random circuit with Haar random local unitaries and a global interaction and (2) a classical model of globally coupled non-linear oscillators. We use exact numerics to provide further evidence by studying the time evolution of an out-of-time-order correlator and entanglement entropy in spin chains of intermediate sizes. Our results pave the way towards experimental investigations of fast scrambling and aspects of quantum gravity with quantum simulators.
description: 5+11 pages, 5+1 figures. Close to published
Sumsets of Semiconvex sets
Creators: name: Ruzsa, Imre
name: Solymosi, Jozsef
Publisher: name: arXiv
Year: 2020
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: We investigate additive properties of sets $A,$ where $A=\{a_1,a_2,\ldots ,a_k\}$ is a monotone increasing set of real numbers, and the differences of consecutive elements are all distinct. It is known that $|A+B|\geq c|A||B|^{1/2}$ for any finite set of numbers $B.$ The bound is tight up to the constant multiplier. We give a new proof to this result using bounds on crossing numbers of geometric graphs. We construct examples showing the limits of possible improvements. In particular, we show that there are arbitrarily large sets with different consecutive differences and sub-quadratic sumset sizes.
description: To appear in Canad. Math. Bull
QCD saturation in the dipole sector with correlations
Creators: name: Janik, Romuald A.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this paper we study the description of saturation in Balitsky, Jalilian-Marian, Iancu, McLerran, Weigert, Leonidov and Kovner (B-JIMWLK) picture when restricted to observables made up only from dipole operators. We derive a functional form of the evolution equation for the dipole probability distribution and find a one-parameter family of exact solutions to the dipole evolution equations.
description: 9 pages, v2: references and comments added, v3: version to appear in Phys. Lett. B (title changed in journal)
Coherent Ising machines with error correction feedback
Creators: name: Kako, Satoshi
name: Leleu, Timothée
name: Inui, Yoshitaka
name: Khoyratee, Farad
name: Reifenstein, Sam
name: Yamamoto, Yoshihisa
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optics (physics.optics)
subject: Emerging Technologies (cs.ET)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: A non-equilibrium open-dissipative neural network, such as a coherent Ising machine based on mutually coupled optical parametric oscillators, has been proposed and demonstrated as a novel computing machine for hard combinatorial optimization problems. However, there are two challenges in the previously proposed approach: (1) The machine can be trapped by local minima which increases exponentially with problem size and (2) the machine fails to map a target Hamiltonian correctly on the loss landscape of a neural network due to oscillator amplitude heterogeneity. Both of them lead to erroneous solutions rather than correct answers. In this paper, we show that it is possible to overcome these two problems partially but simultaneously by introducing error detection and correction feedback mechanism. The proposed machine achieves efficient sampling of degenerate ground states and low-energy excited states via its inherent migration property during a solution search process.
description: 12 pages, 7 figures
title: Design und aerodynamische Untersuchung des Boden des "Formula Student" Rennautos der TU-Wien
Creators: name: Perez Pons, David
Publisher: name: TU Wien
Year: 2015
Subjects: subject: CFD
subject: Diffusor
subject: Rennauto
subject: Aerodynamik
subject: CFD
subject: diffusor
subject: racecar
subject: aerodynamics

description: The objective of this project is to design and develop aerodynamically the undertray of a formula style car. This implies a whole design of a new undertray that fits well to the overall design and performance of the rest of the car. This design includes the length, size and shape of the inlets and outlets of the diffuser as well as the shape of the conducts. To Increase the downforce and decrease the drag to be the fastest is the maximum absolute of any motorsport. The objectives of this project are to: Test the ground effect influence on downforce. -Design iterations of diffusers to get the most aerodynamically efficient. -Optimize the diffuser geometry. -Design a whole undertray for the car. -CFD simulations of the whole car. To make all of this possible knowledge about CFD is needed. Therefore, 2D and 3D simulations of test cases and full car wind tunnel study will be developed.
Lagrangian description of cosmic fluids: mapping dark energy into unified dark energy
Creators: name: Ferreira, V. M. C.
name: Avelino, P. P.
name: Azevedo, R. P. L.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We investigate the appropriateness of the use of different Lagrangians to describe various components of the cosmic energy budget, discussing the degeneracies between them in the absence of nonminimal couplings to gravity or other fields, and clarifying some misconceptions in the literature. We further demonstrate that these degeneracies are generally broken for nonminimal coupled fluids, in which case the identification of the appropriate on-shell Lagrangian may become essential in order characterize the overall dynamics. We then show that models with the same on-shell Lagrangian may have different proper energy densities and use this result to map dark energy models into unified dark energy models in which dark matter and dark energy are described by the same perfect fluid. We determine the correspondence between their equation of state parameters and sound speeds, briefly discussing the linear sound speed problem of unified dark energy models as well as a possible way out associated to the nonlinear dynamics.
description: 14 pages. v3: minor corrections. Matches published version
WAYS OF APPLICATION THE VISUALIZATION PRINCIPLE IN TEACHING ENGLISH
Creators: name: Juraeva, Gulchexra
Publisher: name: Zenodo
Year: 2024

description: In the realm of teaching English as a foreign language (EFL), the integration of visual aids has emerged as a cornerstone in facilitating language learning and comprehension. Visual aids, ranging from images and diagrams to multimedia resources, play a pivotal role in engaging learners, clarifying concepts, and providing authentic contexts for language use. However, the effective utilization of visual aids goes beyond mere presentation; it involves adherence to a set of guiding principles aimed at maximizing their instructional impact.
Analisis Keamanan Data pada Sistem Terdistribusi: Studi Kasus Enkripsi dan Manajemen Kunci
Creators: name: Rasyid Rosada, Rasyid
Publisher: name: Zenodo
Year: 2025

description: Abstrak

 

Dalam era digital, keamanan data menjadi aspek krusial dalam sistem terdistribusi untuk mencegah kebocoran dan akses tidak sah. Penelitian ini menganalisis berbagai teknik enkripsi dalam sistem terdistribusi, dengan fokus pada enkripsi hibrida AES-RSA dan teknik super enkripsi berbasis Vigenere Autokey dan Caesar Cipher. Selain itu, penelitian ini juga mengeksplorasi manajemen kunci dalam sistem enkripsi yang memungkinkan distribusi dan penyimpanan kunci secara lebih aman. Metode yang digunakan mencakup studi literatur, simulasi, dan evaluasi kinerja teknik enkripsi berdasarkan nilai entropi, efisiensi proses enkripsi, serta ketahanan terhadap serangan brute force dan analisis frekuensi. Hasil penelitian menunjukkan bahwa kombinasi AES-RSA menawarkan keseimbangan antara keamanan dan efisiensi, sementara super enkripsi meningkatkan tingkat keamanan dengan nilai entropi lebih tinggi. Kesimpulan penelitian ini menyoroti pentingnya pemilihan algoritma enkripsi yang sesuai serta strategi manajemen kunci yang efektif untuk kebutuhan keamanan data dalam sistem terdistribusi

 

Kata Kunci: keamanan data, enkripsi, sistem terdistribusi, manajemen kunci, entropi, distribusi kunci
Analyzing Twitter Users' Behavior Before and After Contact by the Internet Research Agency
Creators: name: Dutta, Upasana
name: Hanscom, Rhett
name: Zhang, Jason Shuo
name: Han, Richard
name: Lehman, Tamara
name: Lv, Qin
name: Mishra, Shivakant
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computers and Society (cs.CY)
subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: Social media platforms have been exploited to conduct election interference in recent years. In particular, the Russian-backed Internet Research Agency (IRA) has been identified as a key source of misinformation spread on Twitter prior to the 2016 U.S. presidential election. The goal of this research is to understand whether general Twitter users changed their behavior in the year following first contact from an IRA account. We compare the before and after behavior of contacted users to determine whether there were differences in their mean tweet count, the sentiment of their tweets, and the frequency and sentiment of tweets mentioning @realDonaldTrump or @HillaryClinton. Our results indicate that users overall exhibited statistically significant changes in behavior across most of these metrics, and that those users that engaged with the IRA generally showed greater changes in behavior.
description: Accepted to CSCW 2021
La riforma tributaria Italiana del 1973-74: un successo parziale con molti problemi. (The 1973-74 tax reform in Italy: a partial success with many shortcomings)
Creators: name: PEDONE, A.
Publisher: name: Moneta e Credito
Year: 2013
Subjects: subject: Italy, tax reform
subject: H21

description: Il presente articolo richiama l'attenzione su una serie di risultati della riforma fiscale italiana 1973-1974 , al fine di fornire informazioni utili per quanto riguarda il dibattito sull'attuale tassazione. L'autore affronta i fondamentali cambiamenti nel livello e la composizione delle imposte negli anni post -riforma in Italia con riferimento alla situazione prima e a quella che esisteva nei paesi comparabili. Si suggerisce che l'innegabile successo della riforma per aumentare il gettito fiscale è in realtà la fonte delle attuali difficoltà del sistema fiscale . I principali problemi in sospeso , alla luce della recente esperienza sono toccati , nonché quali prospettive ci sono per una soluzione - per quanto difficile da trovare e di breve durata questo può essere . The present article draws attention to a number of results of the Italian 1973-74 tax reform in order to offer useful information regarding the present taxation debate. The author deals with the fundamental changes in the level and the composition of taxation in the post-reform years in Italy with reference to the earlier situation and to that obtaining in comparable countries. It is suggested that the undeniable success of the reform in increasing the tax yield is actually the source of the present difficulties of the tax system. The most important outstanding problems in the light of the recent experience are touched on as well as what prospects there are for a solution - however hard to find and short-lived this may be. JEL: H21
description: Moneta e Credito, V. 37, N. 148 (1984)
Trasformazioni produttive e teoria economica. (Productive transformations and economic theory)
Creators: name: AMENDOLA, M.
Publisher: name: Moneta e Credito
Year: 2013
Subjects: subject: Technological progress, methods of analysis, economic theory
subject: O33

description: Solo di recente gli economisti hanno concentrato la loro attenzione sui rivoluzionari cambiamenti tecnologici in corso e sulle trasformazioni associate delle strutture dell'economia. Questo ha portato ad una proliferazione di tentativi teorici che hanno proposto rifondazioni ambiziose della teoria dinamica nelle direzioni più diverse. Il problema con l'analisi economica di oggi, tuttavia, non è rappresentato dai cambiamenti tecnologici - che hanno, naturalmente, sempre preso posto - ma dallo spostamento della messa a fuoco per il processo attraverso cui si realizzano tali cambiamenti. L'autore sostiene che, invece di nuovi strumenti analitici o modelli sofisticati , ciò che è necessario è quello di definire con precisione l'oggetto dell'analisi, mettendo in luce, in particolare, la stretta relazione tra i problemi considerati e il metodo di analisi adottato. Only recently have economists concentrated their attention on the revolutionary technological changes in progress and on the associated transformations of the structures of the economy. This has resulted in a proliferation of theoretical attempts which have proposed ambitious refoundations of the dynamic theory in the most varied directions. The problem with economic analysis today, however, is represented not by the changes in technology - which have, of course, always taken place - but by the shift of focus to the process through which such changes are realised. The author argues that rather than new analytical tools or sophisticated models, what is required is to define precisely the object of the analysis, bringing to light in particular the strict relation between the problems considered and the method of analysis adopted. JEL: O33
description: Moneta e Credito, V. 37, N. 148 (1984)
Dimensoni di impresa, divisioni del lavoro e ampiezza del mercato. (Firm size and the division of labor)
Creators: name: CONTINI, B.
Publisher: name: Moneta e Credito
Year: 2013
Subjects: subject: Italy, manufacturing, firm size, division of labor
subject: L16, L60, O14

description: La recente pubblicazione del 1981 del Censimento industriale in Italia ha messo in evidenza un fenomeno di cui vi erano già stati alcuni segni da un certo numero di anni - il fatto che le imprese manifatturiere di ogni settore stanno riducendo le loro dimensioni. I dati indicano che sia l'aspetto di un gran numero di piccole imprese nuove e la riduzione del numero medio dei dipendenti delle imprese esistenti di tutte le dimensioni hanno contribuito a questo . Conclusioni simili sono state tratte per gli altri paesi europei. L'ipotesi dell'autore è che la riduzione osservata della dimensione media delle imprese è causata da due fattori concomitanti: ( 1) la maggiore rigidità della struttura dei costi complessivi delle imprese commerciali; ( 2) la maggiore incertezza nei mercati dei fattori e dei prodotti , il che rende le strutture organizzative più flessibili desiderabile . The recent publication of Italy’s 1981 Industrial Census has highlighted a phenomenon of which there had already been some signs for a number of years - the fact that manufacturing firms in every sector are reducing their size. The data indicate that both the appearance of a large number of small new firms and the reduction in the average number of employees in existing firms of all sizes have contributed to this. Similar conclusions have been drawn for other European countries. The author’s hypothesis is that the observed reduction in the average size of firms is caused by two concurrent factors: (1) the increased rigidity of the overall cost structure of business firms; (2) the increased uncertainty in both factor and product markets, which makes more flexible organisational structures desirable. JEL: L16, L60, O14
description: Moneta e Credito, V. 37, N. 148 (1984)
Uniformly frustrated XY model without vortex-pattern ordering
Creators: name: Korshunov, S. E.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The uniformly frustrated XY model with f=1/3 on a dice lattice is shown to possess a so well developed accidental degeneracy of its ground states that the difference between the free energies of fluctuations does not lead to the stabilization of a particular vortex pattern down to zero temperature. Nonetheless, at low temperatures the system is characterized by a finite helicity modulus whose vanishing (at a finite temperature) is related with the dissociation of half-vortex pairs.
description: 4 pages, 3 figures
Rossby modes in slowly rotating stars: depth dependence in distorted polytropes with uniform rotation
Creators: name: Damiani, C.
name: Cameron, R. H.
name: Birch, A. C.
name: Gizon, L.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Large-scale Rossby waves have recently been discovered from measurements of horizontal surface and near-surface solar flows (Löptien at al. 2018). We are interested in understanding why only the sectoral modes are seen in the observations and also in modelling the radial structure of the observed modes. To do so, we characterise here the radial eigenfunctions of r modes for slowly-rotating polytropes in uniform rotation. We find that for free-surface boundary conditions on a spheroid of non-vanishing surface density, r modes can only exist for $\ell=m$ spherical harmonics in the inviscid case, and we compute their depth dependence and frequencies to leading order. For quasi-adiabatic stratification the sectoral modes with no radial nodes are the only modes which are almost toroidal and the depth dependence of the corresponding horizontal motion scales as $r^m$. For all r modes except the zero radial order sectoral ones, non-adiabatic stratification plays a crucial role in the radial force balance. The lack of quasi-toroidal solutions when stratification is close to neutral, except for the sectoral modes without nodes in radius, follows from the statement that the system needs to be in both horizontal and radial force balance. In the absence of super- or subadiabatic stratification and viscosity, both the horizontal and radial force balances independently determine the pressure perturbation. The only quasi-toroidal cases in which the two determinations of the pressure perturbation are consistent are the special cases where $\ell=m$, and the horizontal displacement scales with $r^m$.
description: 10 pages, 8 figures, accepted in A&A
DC MOTOR SPEED CONTROL WITH THE PRESENCE OF INPUT DISTURBANCE USING NEURAL NETWORK BASED MODEL REFERENCE AND PREDICTIVE CONTROLLERS.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 we describe a technical system for DC motor speed control. The speed of DC motor is controlled using
Neural Network Based Model Reference and Predictive controllers with the use of Matlab/Simulink. The analysis of
the DC motor is done with and without input side Torque disturbance input and the simulation results obtained by
comparing the desired and actual speed of the DC motor using random reference and sinusoidal speed inputs for the
DC motor with Model Reference and Predictive controllers. The DC motor with Model Reference controller shows
almost the actual speed is the same as the desired speed with a good performance than the DC motor with Predictive
controller for the system with and without input side disturbance. Finally the comparative simulation result prove the
effectiveness of the DC motor with Model Reference controller.
Le tendenze dell'occupazione: un confronto internazionale. (Employment trends: an international comparison)
Creators: name: DELL’ARINGA, C.
Publisher: name: Moneta e Credito
Year: 2013
Subjects: subject: Employment trend forecasts, determinants of long-run employment
subject: E24, E27, J21

description: L'interesse per le previsioni di tendenza di occupazione è cresciuto significativamente negli ultimi anni, in particolare quelli relativi al lungo termine . Ciò che sorprende è la grande differenze nelle tendenze che emergono da paese a paese , anche dalle stime delle organizzazioni internazionali che mettono a confronto le esperienze dei vari paesi . Non è chiaro se le ragioni di tali differenze si trovanonegli effetti dei fenomeni generali che caratterizzano l' esperienza di tutti i paesi , come ad esempio il progresso tecnico , o fenomeni piuttosto specifici propri di ogni paese differente . Ciò che sembra chiaro, tuttavia , è la natura estrapolativa delle previsioni . La presente nota analizza il difficile compito di individuare le determinanti storiche dell'evoluzione del rapporto di lavoro nel lungo periodo , al fine di comprendere meglio il modo in cui le previsioni sono concepiti oggi . Interest in employment trend forecasts has grown significantly in recent years, especially those related to the long term. What is surprising is the large differences in trends that emerge from country to country, even from estimates by international organisations that compare the experiences of various countries. It is unclear if the reasons for such differences lie in differing effects of general phenomena that characterise the experience of all countries, such as technical progress, or rather specific phenomena peculiar to each country. What seems clear, however, is the extrapolative nature of the forecasts. The present note looks at the difficult task of identifying the historical determinants of the evolution of employment in the long run, in order to better understand the way in which forecasts are devised today. JEL: E24, E27, J21
description: Moneta e Credito, V. 37, N. 148 (1984)
Alcuni possibili scenari per l'economia italiana nella seconda metà degli anni ottanta. (Some possible scenarios for the Italian economy in the second half of the 1980s)
Creators: name: FAUSTINI, G.
name: TRESOLDI, C.
Publisher: name: Moneta e Credito
Year: 2013
Subjects: subject: Italy, labour market, employment, growth, economic policy
subject: J21, E24, O21

description: Negli ultimi anni, l'offerta di lavoro in Italia , come in altri paesi europei , non ha prodotto una espansione di opportunità di lavoro . Questo nonostante il fatto che durante l'ultima recessione l'Italia ha visto una minore riduzione dei livelli di attività rispetto alla media dell'Unione europea , ed era quindi in grado di limitare , più che altrove , l'impatto negativo sul mercato del lavoro . Il presente lavoro presenta scenari di sviluppo per l'economia italiana fino al 1990 , senza prevedere che cosa accadrà nei prossimi anni. Piuttosto , si intende semplicemente sottolineare la necessità di affrontare il problema della crescita interna , in presenza di un probabile modesta espansione dell'economia mondiale , individuando le difficoltà dei problemi che in politica economica si incontrano al fine di favorire una ripresa stabile e un progressivo aumento del tasso di occupazione . In recent years the supply of labor in Italy, as in other European countries, has not produced an expansion of employment opportunities. This despite the fact that during the last recession Italy saw a smaller reduction in the levels of activity compared to the average of the EU, and was thus able to limit, more than elsewhere, the negative impact on the labor market. The present work presents scenarios of development for the Italian economy through 1990, without forecasting what will happen in the next few years. Rather, it is intended to simply to emphasise the need to address the problem of internal growth, in the presence of a probable modest expansion of the world economy, identifying the difficulties and problems that economic policy will encounter in order to foster a stable recovery and a gradual increase in the employment rate. JEL: J21, E24, O21
description: Moneta e Credito, V. 37, N. 148 (1984)
Der Einsatz von Apps im Unterricht Kriterienkatalog für Apps im schulischen Kontext, insbesondere für Apps mit dem Ziel der Förderung der phonologischen Bewusstheit
Creators: name: Büchel, Annina
Publisher: name: Zenodo
Year: 2014
Subjects: Sonderpädagogik
Masterarbeit

description: Neue interaktive Medien, insbesondere das iPad, faszinieren Menschen jeden Alters und finden zunehmend in Regel- und Sonderschulen Anwendung. Besondere Merkmale sind deren motivationale Wirkung auf die Nutzer und die einfache Bedienung. Wie kann das Potenzial dieser neuen Medien zur Förderung der phonologischen Bewusstheit genutzt werden? In der vorliegenden Masterarbeit wurde mittels einer theoriebasierten Inhaltsanalyse eine Kriterienliste für qualitativ gute Apps erstellt. Anhand Leitfadeninterviews wurde die Sicht von Expertinnen und Experten eingeholt. Aus den Kriterien der Literatur und der Expertinnen und Experten entstand der vorliegende Kriterienkatalog. Dieser bietet Lehrpersonen und Eltern Orientierung und Hilfestellung, um aus der Fülle von Angeboten das Passende für das Kind auszuwählen. Er gibt ihnen Prüfkriterien in die Hand, anhand derer sie eine App beurteilen können.
A refined Razumov-Stroganov conjecture II
Creators: name: Di Francesco, P.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: Combinatorics (math.CO)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We extend a previous conjecture [cond-mat/0407477] relating the Perron-Frobenius eigenvector of the monodromy matrix of the O(1) loop model to refined numbers of alternating sign matrices. By considering the O(1) loop model on a semi-infinite cylinder with dislocations, we obtain the generating function for alternating sign matrices with prescribed positions of 1's on their top and bottom rows. This seems to indicate a deep correspondence between observables in both models.
description: 21 pages, 10 figures (3 in text), uses lanlmac, hyperbasics and epsf macros