cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Optimal decay of Wannier functions in Chern and Quantum Hall insulators
Creators: name: Monaco, D.
name: Panati, G.
name: Pisante, A.
name: Teufel, S.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mathematical Physics (math-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences
subject: 81Q70, 81V70 (Primary)

description: We investigate the localization properties of independent electrons in a periodic background, possibly including a periodic magnetic field, as e.g. in Chern insulators and in Quantum Hall systems. Since, generically, the spectrum of the Hamiltonian is absolutely continuous, localization is characterized by the decay, as $|x| \rightarrow \infty$, of the composite (magnetic) Wannier functions associated to the Bloch bands below the Fermi energy, which is supposed to be in a spectral gap. We prove the validity of a localization dichotomy, in the following sense: either there exist exponentially localized composite Wannier functions, and correspondingly the system is in a trivial topological phase with vanishing Hall conductivity, or the decay of any composite Wannier function is such that the expectation value of the squared position operator, or equivalently of the Marzari-Vanderbilt localization functional, is $+ \infty$. In the latter case, the Bloch bundle is topologically non-trivial, and one expects a non-zero Hall conductivity.
description: 45 pages, 2 figures
Bezeichnungen für den Krieg bei den Azteken: die Metapher Teoatl Tlachinolli
Creators: name: Díaz De Arce, Norbert
Publisher: name: INDIANA
Year: 2000

description: Los términos aztecas para la guerra encontraron sólo muy poca atención en los últimos años. Hace casi cien años el intento de Walter Lehmann de presentar un análisis detallado. Desde entonces o han quedado ignoradas varias explicaciones más antiguas o éstas se han adoptado siempre de nuevo de forma poco crítica. La siguiente contribución analítica intenta llegar, al contrario, a nuevos resultados, basándose en repetidas interpretaciones de las fuentes y en la discusión crítica de la literatura secundaria.
description: INDIANA, Bd. 16 (2000)
Felsbilder in Costa Rica. Eine bibliographische Zusammenfassung
Creators: name: Künne, Martin
name: Elisenda, Coladan
Publisher: name: INDIANA
Year: 2000

description: La bibliografía aquí presentada sobre los estudios dedicados a petroglifos en Costa Rica documenta el estado actual de estas investigaciones. Incluyendo trabajos publicados así como algunos no publicados, se entiende como un paso provisional en el avance documental, analítico e interpretativo de esa área temática dentro de la arqueología y antropología centroamericanas.
description: INDIANA, Bd. 16 (2000)
Strong Equilibria in Bayesian Games with Bounded Group Size
Creators: name: Han, Qishen
name: Schoenebeck, Grant
name: Tao, Biaoshuai
name: Xia, Lirong
Publisher: name: arXiv
Year: 2025
Subjects: subject: Computer Science and Game Theory (cs.GT)
subject: FOS: Computer and information sciences

description: We study the group strategic behaviors in Bayesian games. Equilibria in previous work do not consider group strategic behaviors with bounded sizes and are too ``strong'' to exist in many scenarios. We propose the ex-ante Bayesian $k$-strong equilibrium and the Bayesian $k$-strong equilibrium, where no group of at most $k$ agents can benefit from deviation. The two solution concepts differ in how agents calculate their utilities when contemplating whether a deviation is beneficial. Intuitively, agents are more conservative in the Bayesian $k$-strong equilibrium than in the ex-ante Bayesian $k$-strong equilibrium. With our solution concepts, we study collusion in the peer prediction mechanisms, as a representative of the Bayesian games with group strategic behaviors. We characterize the thresholds of the group size $k$ so that truthful reporting in the peer prediction mechanism is an equilibrium for each solution concept, respectively. Our solution concepts can serve as criteria to evaluate the robustness of a peer prediction mechanism against collusion. Besides the peer prediction problem, we also discuss two other potential applications of our new solution concepts, voting and Blotto games, where introducing bounded group sizes provides more fine-grained insights into the behavior of strategic agents.
description: Accepted by TheWebConf 2025 (WWW'25). 23 pages
The Sardinia Radio Telescope: From a Technological Project to a Radio Observatory
Creators: name: Prandoni, I.
name: Murgia, M.
name: Tarchi, A.
name: Burgay, M.
name: Castangia, P.
name: Egron, E.
name: Govoni, F.
name: Pellizzoni, A.
name: Ricci, R.
name: Righini, S.
name: Bartolini, M.
name: Casu, S.
name: Corongiu, A.
name: Iacolina, M. N.
name: Melis, A.
name: Nasir, F. T.
name: Orlati, A.
name: Perrodin, D.
name: Poppi, S.
name: Trois, A.
name: Vacca, V.
name: Zanichelli, A.
name: Bachetti, M.
name: Buttu, M.
name: Comoretto, G.
name: Concu, R.
name: Fara, A.
name: Gaudiomonte, F.
name: Loi, F.
name: Migoni, C.
name: Orfei, A.
name: Pilia, M.
name: Bolli, P.
name: Carretti, E.
name: D'Amico, N.
name: Guidetti, D.
name: Loru, S.
name: Massi, F.
name: Pisanu, T.
name: Porceddu, I.
name: Ridolfi, A.
name: Serra, G.
name: Stanghellini, C.
name: Tiburzi, C.
name: Tingay, S.
name: Valente, G.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: [Abridged] The Sardinia Radio Telescope (SRT) is the new 64-m dish operated by INAF (Italy). Its active surface will allow us to observe at frequencies of up to 116 GHz. At the moment, three receivers, one per focal position, have been installed and tested. The SRT was officially opened in October 2013, upon completion of its technical commissioning phase. In this paper, we provide an overview of the main science drivers for the SRT, describe the main outcomes from the scientific commissioning of the telescope, and discuss a set of observations demonstrating the SRT's scientific capabilities. One of the main objectives of scientific commissioning was the identification of deficiencies in the instrumentation and/or in the telescope sub-systems for further optimization. As a result, the overall telescope performance has been significantly improved. As part of the scientific commissioning activities, different observing modes were tested and validated, and first astronomical observations were carried out to demonstrate the science capabilities of the SRT. In addition, we developed astronomer-oriented software tools, to support future observers on-site. The astronomical validation activities were prioritized based on technical readiness and scientific impact. The highest priority was to make the SRT available for joint observations as part of European networks. As a result, the SRT started to participate (in shared-risk mode) in EVN (European VLBI Network) and LEAP (Large European Array for Pulsars) observing sessions in early 2014. The validation of single-dish operations for the suite of SRT first light receivers and backends continued in the following years, and was concluded with the first call for shared-risk/early-science observations issued at the end of 2015.
description: 26 pages, 18 figures, accepted for publication in Section 13 'Astronomical instrumentation' of Astronomy & Astrophysics
Impacts of Climate Change on Crop Production and Its Adaptation and Mitigation Strategies in Ethiopia
Creators: name: Abeje, Abiyot
name: Alemayehu, Melkamu
Publisher: name: Journal of Agriculture and Environmental Sciences
Year: 2019

description: Agriculture is the foundation of Ethiopia’s economy where crop production contributes more than 65% of the agricultural GDP of the country. The impacts of climate change have been observed in Ethiopia over a long period of time which changes the environmental conditions that influence the livelihoods of the farmers and thus the national economy. Future climate projections showed continuing warming of the environment with varying rainfall patterns. The rain fed crop production, which is mostly practiced in the country, is highly vulnerable to climate change. The purpose of the present review is therefore, to review the impacts of climate change on crop production of Ethiopia and its adaptation and mitigation strategies. According to the results of the review, the main climate change hazards observed in Ethiopia are associated with rainfall variability including the amount, timing and intensity. Rainfall variability and recurrent drought lead to frequent yield losses and in sever conditions crop failures that result losses of property and even human life in the country. Smallholder farmers in the country are trying to use indigenous and improved crop production technologies as well as different management practices including selection of crops and or cultivars suitable to changing climate, adjustment of frequency and time of tillage, optimization of time of planting and its density, intercropping, traditional irrigation and water harvesting technologies. Rigorous natural resource management strategies including afforestation, promotion of agro-forestry, and use of renewable energy sources and development of land use plan were among others mitigation strategies of climate change implemented in the country. Capitalizing the existing development policies and programmers, development of research and extension services, improving the linkages between the respective stakeholders and awareness and understanding of local communities about the relationship between climate change and crop production are recommended to reduce the impacts of climate change on crop production of the country.
description: Journal of Agriculture and Environmental Sciences, Vol 4 No 2 (2019)
El modelo de Max Uhle para el estudio de los "quipus", a la luz de sus notas inéditas de trabajo de campo (1894-1897)
Creators: name: Loza, Carmen Beatriz
Publisher: name: INDIANA
Year: 2000

description: Este artículo presenta los modelos europeos para el estudio del quipu en el siglo XIX, enfatizando la propuesta del arqueólogo alemán Max Uhle (1856-1944), quien no adhirió a la teoría difusionista imperante en esa época. Se reconstruyen las circunstancias personales, intelectuales y socio-políticas de sus expediciones efectuadas en La Paz, Bolivia, donde buscó y adquirió quipus aimaras modernos para el Königliches Museum für Völkerkunde (Berlín) y el Free Museum of Science and Art, University of Pennsylvania (Filadelfia). Se rastrean sus trabajos de campo en las haciendas del altiplano paceño y se identifican sus lazos con los actores sociales que lo ayudaron a conocer el contenido de las cuerdas- registros, traduciendo del aimara al castellano. Apoyados en sus artículos acerca del quipu es posible examinar las analogías que estableció entre los quipus modernos y los prehispánicos a fin de avanzar en la comprensión de estos últimos. Han sido utilizadas sus libretas personales y la correspondencia que mantuvo con el etnógrafo alemán Adolf Bastian (1826-1905), ambas fuentes inéditas.
description: INDIANA, Bd. 16 (2000)
Felsbilder der Provinz Chiriquiri, Panama
Creators: name: Künne, Martin
Publisher: name: INDIANA
Year: 2000

description: El arte rupestre de Panamá incluye una gran variedad de petroglifos. En particular son las regiones occidentales del país las que contienen un número muy alto de piedras grabadas. La presente contribución detalla resultados de una investigación que el autor realizó en colaboración con el Museo de Historia y de Arte José Obaldía en 1999. Durante de este proyecto se trabajaba en 9 territorios con petroglifos que forman parte de la provincia Chiriquí. Al comienzo se esboza el estado de investigación de arte rupestre en Panamá y las condiciones naturales y físico-ambientales del Chiriquí. Por medio de la descripción de la Piedra Pintal de Caldera se analiza las características de los petroglifos de esta región. Se presenta su contexto ambiental, cultural y étnico. Con este motivo el texto comenta diferentes métodos y resultados de interpretación. Finalmente el autor discute las dificultades y obstáculos de la protección de arte rupestre.
description: INDIANA, Bd. 16 (2000)
Trophée en métal nickelé avec cintres et trois clés. Mention « Pubilla del dia de la sardana, obra del ballet popular » (1960)
Creators: name: Musée National Des Arts Et Traditions Populaires (Paris)
name: Centre D'ethnologie Française
Publisher: name: École des Hautes Études en Sciences Sociales; Institut  interdisciplinaire d'anthropologie du contemporain (Paris); Laboratoire d'anthropologie et d'histoire de l'institution de la culture (Paris)
Year: 2022

Abstract
Maya-Monumente aus La Naya, Petén
Creators: name: Mayer, Karl Herbert
Publisher: name: INDIANA
Year: 2000

description: En el pequeño sitio arqueológico La Naya había originalmente algunas estelas del clásico temprano y del clásico tardío. En su estilo local, las estelas se parecen a monumentos del clásico temprano del sitio El Zapote que se encuentra a tan solo 18 km al oeste de La Naya. Las semejanzas iconográficas aparecen, particularmente, en las decoraciones de cabeza y en el vestido. La única estela en La Naya la que está en buenas condiciones, la Estela 1, menciona, en su epigrafía, una relación dinástica con la ciudad de Yaxhá, centro maya que está ubicado al este de La Naya.
description: INDIANA, Bd. 16 (2000)
Sobre higiene y medicina entre los zapotecas durante la época de la conquista española
Creators: name: Thiemer-Sachse, Ursula
Publisher: name: INDIANA
Year: 2000

description: Entre los zapotecas del período precolonial la higiene y la medicina tenían formas semejantes a los otros pueblos mesoamericanos. En el tiempo de la Conquista española existió un grupo especial de curanderos que pertenecían a la élite dominante como miembros del sacerdocio. En relación muy estrecha con rituales y conocimientos calendáricos se valían de su saber secreto, tratando a enfermos y cuidando a preñadas. Como resultado de la política de subyugación por parte del régimen colonial y de las actividades de los misioneros, varios de esos conocimientos se perdieron. Pero eran los mismos funcionarios de la administración colonial y los misioneros que trataban de recolectar informaciones sobre higiene y medicina tradicionales. Las antiguas prácticas de curaciones forman parte de las raíces de la medicina popular entre los zapotecas de hoy en día, que son dignas de atención.
description: INDIANA, Bd. 16 (2000)
Constraining Higgs boson effective couplings at electron-positron colliders
Creators: name: Khanpour, Hamzeh
name: Najafabadi, Mojtaba Mohammadi
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We probe the dimension-six operators contributing to Higgs production in association with a $Z$ boson at the future high-luminosity electron-positron colliders. Potential constraints on dimension-six operators in the Higgs sector are determined by performing a shape analysis on the differential angular distribution of the Higgs and $Z$ boson decay products. The analysis is performed at the center-of-mass energies of 350 and 500 GeV including a realistic detector simulation and the main sources of background processes. The 68\% and 95\% confidence level upper limits are obtained on the contributing anomalous couplings considering only the decay of the Higgs boson into a pair of $b$-quarks and leptonic $Z$ boson decay. Our results show that angular observables provide a great sensitivity to the anomalous couplings, in particular, at the high-luminosity regime.
description: 13 pages, 6 figures and 3 Tables
Exponent Function for Stationary Memoryless Channels with Input Cost at Rates above the Capacity
Creators: name: Oohama, Yasutada
Publisher: name: arXiv
Year: 2017
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: We consider the stationaly memoryless channels with input cost. We prove that for transmission rates above the capacity the correct probability of decoding tends to zero exponentially as the block length $n$ of codes tends to infinity. In the case where both of channel input and output sets are finite, we determine the optimal exponent function on the above exponential decay of the correct probability. To derive this result we use a new technique called the recuresive method, which is based on the information spectrum approach. The recursive method utilize a certain recursive structure on the information spectrum quantities.
description: 15pages. arXiv admin note: text overlap with arXiv:1701.06357
La lápida grabada de Noriega: tres rituales en la vida de un noble zapoteca
Creators: name: Urcid, Javier
Publisher: name: INDIANA
Year: 2000

description: Este trabajo describe e interpreta una piedra con relieves procedente de Noriega, un sitio cercano a Zaachila, Oaxaca. Se postula, siguiendo a otros domentaristas anteriores, que el contenido de los relieves incluye información sobre un linaje real. Nuevas identificaciones de los personajes representados permiten sugerir una secuencia genealógica alternativa. Partiendo de la suposición de que la pictografía narrativa a la epigrafía tienen una relación complementaria, se hace un análisis de todos los elementos gráficos, de las posturas de los personajes y de sus vestimentas, lo que lleva a sugerir que los rituales que se representan validan y afirman la ascendencia al poder por parte de un niño llamado 6 Búho.
description: INDIANA, Bd. 16 (2000)
La representación de un cometa en la Tumba 2 de Mitla, Oaxaca, México
Creators: name: Fähmel Beyer, Bernd
Publisher: name: INDIANA
Year: 2001

description: En este trabajo se analizan distintas representaciones prehispánicas y coloniales de fenómenos astronómicos y su relación con los dioses duales del panteón mesoamericano, en especial con Tezcatlipoca. Los atributos de este dios se emplearon, entre otro, para caracterizar a los cometas y significar su aparición en términos socio-culturales. Los diseños pintados en el Códice Nuttall 10 y la Tumba 2 de Mitla caben dentro de este contexto, brindando la oportunidad de confrontar los fechamientos tradicionales con la información astronómica recabada en los anales del Viejo Mundo.
description: INDIANA, Vol 17/18 (2001)
Higgsino Dark Matter or Not: Role of Disappearing Track Searches at the LHC and Future Colliders
Creators: name: Fukuda, Hajime
name: Nagata, Natsumi
name: Otono, Hidetoshi
name: Shirai, Satoshi
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Higgsino in supersymmetric standard models is known to be a promising candidate for dark matter in the Universe. Its phenomenological property is strongly affected by the gaugino fraction in the Higgsino-like state. If this is sizable, in other words, if gaugino masses are less than ${\cal O}(10)$ TeV, we may probe the Higgsino dark matter in future non-accelerator experiments such as dark matter direct searches and measurements of electric dipole moments. On the other hand, if gauginos are much heavier, then it is hard to search for Higgsino in these experiments. In this case, due to a lack of gaugino components, the mass difference between the neutral and charged Higgsinos is uniquely determined by electroweak interactions to be around $350$ MeV, which makes the heavier charged state rather long-lived, with a decay length of about $1$ cm. In this letter, we argue that a charged particle with a flight length of ${\cal O}(1)$ cm can be probed in disappearing-track searches if we require only two hits in the pixel detector. Even in this case, we can reduce background events with the help of the displaced-vertex reconstruction technique. We study the prospects of this search strategy at the LHC and future colliders for the Higgsino dark matter scenario. It is found that an almost pure Higgsino is indeed within the reach of the future $33$ TeV collider experiments. We then discuss that the interplay among collider and non-accelerator experiments plays a crucial role in testing the Higgsino dark matter scenarios. Our strategy for disappearing-track searches can also enlarge the discovery potential of pure wino dark matter as well as other electroweak-charged dark matter candidates.
description: 7 pages, 3 figures
Fission dynamics of $^{252}$Cf
Creators: name: Zdeb, A.
name: Dobrowolski, A.
name: Warda, M.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The time-dependent generator coordinate method with the gaussian overlap approximation (TDGCM+GOA) formalism is applied to describe the fission of $^{252}$Cf. We perform analysis of fission from the initial states laying in the energetic range from the ground state to the state located 4 MeV above the fission barrier. The fission fragment mass distributions, obtained for different parity, energy of levels and types of mixed states, are calculated and compared with experimental data. The impact of the total time of wave packet propagation on the final results is studied as well. The weak dependence of obtained mass yields on the initial conditions is shown.
description: 7 pages, 7 figures
The evolution of CNO isotopes: a new window on cosmic star-formation history and the stellar IMF in the age of ALMA
Creators: name: Romano, D.
name: Matteucci, F.
name: Zhang, Z. -Y.
name: Papadopoulos, P. P.
name: Ivison, R. J.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We use state-of-the-art chemical models to track the cosmic evolution of the CNO isotopes in the interstellar medium (ISM) of galaxies, yielding powerful constraints on their stellar initial mass function (IMF). We re-assess the relative roles of massive stars, asymptotic giant branch (AGB) stars and novae in the production of rare isotopes such as 13C, 15N, 17O and 18O, along with 12C, 14N and 16O. The CNO isotope yields of super-AGB stars, novae and fast-rotating massive stars are included. Having reproduced the available isotope enrichment data in the solar neighbourhood, and across the Galaxy, and having assessed the sensitivity of our models to the remaining uncertainties, e.g. nova yields and star-formation history, we show that we can meaningfully constrain the stellar IMF in galaxies using C, O and N isotope abundance ratios. In starburst galaxies, where data for multiple isotopologue lines are available, we find compelling new evidence for a top-heavy stellar IMF, with profound implications for their star-formation rates and efficiencies, perhaps also their stellar masses. Neither chemical fractionation nor selective photodissociation can significantly perturb globally-averaged isotopologue abundance ratios away from the corresponding isotope ones, as both these processes will typically affect only small mass fractions of molecular clouds in galaxies. Thus the Atacama Large Millimetre Array now stands ready to probe the stellar IMF, and even the ages of specific starburst events in star-forming galaxies across cosmic time unaffected by the dust obscuration effects that plague optical/near-infrared studies.
description: 15 pages, 7 figures, MNRAS in press (the accepted version match the one already available from the arXiv)
Dynamic analysis in Greenberg's traffic model
Creators: name: Rosas-Jaimes, Oscar A.
name: Quezada-Téllez, Luis A.
name: Fernández-Anaya, Guillermo
Publisher: name: arXiv
Year: 2017
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics

description: Based on the classical traffic model by Greenberg, a linear differential equation, we analyze it by means of varying the critical velocity $v_o$ that appears in it as a parameter. In order to make such analysis we have obtained a solution for such a model and discretized it, obtaining related expressions for density $k$, flow $q$ and velocity $v$ to be treated as paired functions to obtained maps in phase-planes in which it is possible to observe distinct behaviors which span from monotonic and oscillatory stable trajectories, limit cycles of distinct periodicity, and chaotic ones. These behaviors are analyzed from a dynamical approach and then ilustrated with simulations performed in each case. As it is shown in this paper, these analyses are similar to those carried out in similar though simpler expressions (i.e. logistic-type functions), but taking in this case a new and direct approach through a nonlinear expression not used before to perform studies like these presented in this document, with a deep detail in the manner in which traffic variables are involved qualitatively and quantitatively.
Recurrent fast radio bursts from collisions of neutron stars in the evolved stellar clusters
Creators: name: Dokuchaev, V. I.
name: Eroshenko, Yu. N.
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We propose the model describing the observed multiple fast radio bursts due to the close encounters and collisions of neutron stars in the central clusters of the evolved galactic nuclei. The subsystem of neutron star cluster may originate in the dense galactic nucleus evolutionary in the combined processes of stellar and dynamical evolution. The neutron stars in the compact cluster can produce the short living binaries with the highly eccentric orbits, and finally collide after several orbital revolutions. Fast radio bursts may be produced during the close periastron approach and at the process of the final binary merging. In the sufficiently dense star cluster the neutron stars collisions can be very frequent. Therefore, this model can explain in principle the observed recurrent (multiple) fast radio bursts, analogous to the observed ones from the source FRB 121102. Among the possible observational signatures of the proposed model may be the registration of the gravitational wave bursts by the laser interferometers LIGO/VIRGO or by the next generation of gravitational wave detectors.
description: 5 pages, references and clarifying comments added
Los desafíos político-legales en materia de protección de los derechos de aguas de las comunidades indígena-campesinas en los países andinos
Creators: name: Gentes, Ingo
Publisher: name: INDIANA
Year: 2001

description: En América Latina, las "culturas de agua” y las "identidades hidráulicas locales” forman parte importante en la gestión integral del recurso hídrico. Tanto que en la ponencia final de las conclusiones del Foro del Agua en La Haya en marzo 2000 se concretizó que los pueblos indígenas y sus sistemas únicos de valores, conocimientos y prácticas han sido prácticamente omitidos en el proceso de una visión global del agua. El siguiente documento conceptual pretende contribuir a una mejor comprensión de los derechos indígenas al agua, sensibilizar la toma de decisiones al respecto, a los cambios legales y de políticas requeridas, y contribuir al reconocimiento adecuado de las normas indígenas con respecto a la gestión integral de recursos hídricos. El estudio es interdisciplinario con el fin de intercambiar los avances y estrategias entre los países respectivos sobre las fortalezas, debilidades y oportunidades en cada país, y para fortalecer la acción interinstitucional e interandina al respecto. El estudio también es comparativo ya que incluye las experiencias y avances de otras regiones y además recoge los avances en la regulación internacional sobre el tema.
description: INDIANA, Vol 17/18 (2001)
Isolating Majorana fermions with finite Kitaev nanowires and temperature: the universality of the zero-bias conductance
Creators: name: Campo, V. L.
name: Ricco, L. S.
name: Seridonio, A. C.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The zero-bias peak (ZBP) is understood as the definite signature of a Majorana bound state (MBS) when attached to a semi-infinite Kitaev nanowire (KNW) nearby zero temperature. However, such characteristics concerning the realization of the KNW constitute a profound experimental challenge. We explore theoretically a QD connected to a topological KNW of finite size at non-zero temperatures and show that overlapped MBSs of the wire edges can become effectively decoupled from each other and the characteristic ZBP can be fully recovered if one tunes the system into the leaked Majorana fermion fixed point. At very low temperatures, the MBSs become strongly coupled similarly to what happens in the Kondo effect. We derive universal features of the conductance as a function of the temperature and the relevant crossover temperatures. Our findings offer additional guides to identify signatures of MBSs in solid state setups.
Cumulative Effects Assessment of the North Saskatchewan River Watershed using ALCES
Creators: North Saskatchewan Watershed Alliance (NSWA)
Publisher: name: University of Alberta Library
Year: 2009

The NSWA engaged the ALCES© Group to undertake a high-level, strategic and exploratory cumulative effects modeling for the NSRB. Specifically, the NSWA-ALCES© cumulative effects assessment project is intended to simulate the effects of major land uses in the watershed (agriculture, forestry, urban, and petrochemical industry) on specific watershed “values” (i.e., biodiversity, landscape integrity, water quality, and water quantity) over a 100 year time span. (As cited in executive summary.)
Primus inter pares: The Ruling House of Cocom
Creators: name: Gubler, Ruth
Publisher: name: INDIANA
Year: 2001

description: In this article the author takes issue with the exaggerated importance attributed to the Xiu in ethnohistorial sources, in contrast with the way in which the equally important, even preeminent, lineage of the Cocom is relegated to a secondary role. Historical reasons are examined to account for the ascendancy of the former and neglect of the latter under Spanish rule. A new look is also taken at the age-old enmity between the two lineages, and the episode of Hunac Ceel in several of the Books of Chilam Balam. In addition, new genealogical data from unpublished documents is presented on the Cocom.
description: INDIANA, Vol 17/18 (2001)
title: Ανάπτυξη ακαδημαϊκών ερευνητικών τεχνοβλαστών (spin-offs) στην Ελλάδα. Υφιστάμενη κατάσταση και προοπτικές
title: Development of academic and research spin-offs in Greece. Current situation and prospects
titleType: AlternativeTitle
Creators: name: Ακριτίδη, Ευαγγελία-Ζωή
Publisher: name: Πανεπιστήμιο Πειραιώς
Year: 2023
Subjects: subject: Επιχειρηματικότητα
subject: Καινοτομία
subject: Τεχνοβλαστοί
subject: Spin-offs
subject: Γραφεία μεταφοράς τεχνολογίας
subject: Χρηματοδότηση

description: Σκοπός της παρούσας μεταπτυχιακής διατριβής είναι να διερευνηθεί ο αντίκτυπος της εφαρμογής του πρόσφατου νομοθετικού πλαισίου εντός του οποίου αποσαφηνίζεται η επιχειρηματική δραστηριότητα των τεχνοβλαστών και αποκτά νέα δυναμική. Επιδιώκεται η καταγραφή της σημερινής εικόνας των ακαδημαϊκών τεχνοβλαστών και των δραστηριοτήτων ερευνητών και επιστημονικών μελών, οι οποίες συνεπικουρούν στην ίδρυση και προώθηση των πανεπιστημιακών εταιρειών-τεχνοβλαστών (spin-off). H έρευνα είναι ποιοτική και η μεθοδολογία που χρησιμοποιήθηκε στηρίζεται σε βιβλιογραφική επισκόπηση και σε μελέτες περίπτωσης των θεματολογιών που σχετίζονται με την επιχειρηματικότητα, την καινοτομία, την ίδρυση, την χρηματοδότηση και εν γένει τη λειτουργία και βιωσιμότητα των ακαδημαϊκών και ερευνητικών τεχνοβλαστών. Από την έρευνα προκύπτει πως τα οικοσυστήματα επιχειρηματικότητας και καινοτομίας αποσκοπούν στην ευέλικτη και αποδοτική σύνδεση μεταξύ εταιρικών οργανισμών, κρατικών φορέων, κεφαλαίων, συνεργατών, πελατών, προμηθευτών συμμετέχοντας στην παροχή και προώθηση ενός προϊόντος ή υπηρεσίας. Ειδική μνεία γίνεται στα Γραφεία Μεταφοράς Τεχνολογίας των Πανεπιστημίων που διαδραματίζουν σημαντικό ρόλο στη διαδικασία μεταφοράς της τεχνολογίας, στην υποστήριξη των ερευνητών οι οποίοι προσβλέπουν στην προστασία της πνευματικής ιδιοκτησίας και στην οικονομική αξιοποίηση των αποτελεσμάτων της έρευνάς τους. Οι νέες νομοθετικές ρυθμίσεις του 2021 αποσκοπούν στην ανάπτυξη σχέσεων εμπιστοσύνης μεταξύ των μελών της ερευνητικής κοινότητας και του οικοσυστήματος καινοτομίας μέσω της επιχειρηματικότητας, με σημαντικά οφέλη για το σύνολο της τοπικής καθώς και της ευρύτερης κοινωνίας. Η μελέτη τόσο της υφιστάμενης κατάστασης, όσο και των προοπτικών ανάπτυξης περισσότερων ακαδημαϊκών τεχνοβλαστών, καθώς και των τρόπων δια των οποίων μπορεί να ενθαρρυνθεί η προσπάθεια προς αυτόν τον προσανατολισμό, προσδοκά να φανεί ωφέλιμη σε όσους ερευνητές επιθυμούν να δραστηριοποιηθούν στην κατεύθυνση αυτή.
La historia de Don Andrés Cocom en los Libros del Chilam Balam
Creators: name: Gunsenheimer, Antje
Publisher: name: INDIANA
Year: 2001

description: El personaje de Don Andrés Cocom, nativo de Sotuta (Yucatán), es conocido por su liderazgo en una rebelión contra el poder español colonial en el año 1583. Ciertamente, Don Andrés Cocom fue uno de los primeros rebeldes en la historia maya colonial. Es menos conocido que también los Libros del Chilam Balam relatan hechos de su vida rebelde. El artículo presenta la narración de "Don Antonio Martínez” de los Libros de Chilam Balam y su base histórica en el personaje de Don Andrés Cocom. Sigue una discusión de la importancia de este líder para la sociedad maya yucateco colonial.
description: INDIANA, Vol 17/18 (2001)
Generalized Beth-Uhlenbeck approach to the equation of state for quark-hadron matter
Creators: name: Blaschke, D.
name: Dubinin, A.
name: Turko, L.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: A unified equation of state for quark-hadron matter is presented in the generalized Beth-Uhlenbeck form. It follows from a $Φ-$derivable approach to the thermodynamic potential where the ansatz for the $Φ$ functional contains all 2PI diagrams at two-loop order formed with quark cluster Green's functions for quark, diquark, meson and baryon propagators. We present numerical results using an effective model for the generic behaviour of hadron masses and phase shifts at finite temperature which shares basic features with recent developments within the PNJL model for correlations in quark matter. We obtain the transition between a hadron resonance gas phase and the quark gluon plasma where the Mott dissociation of hadrons is encoded in the hadronic phase shifts. The resulting thermodynamics is in very good agreement with recent lattice QCD simulations.
description: 8 pages, 3 figures, contribution to the Proceedings of "Critical Point and Onset of Deconfinement", Wroclaw, 30.05.-04.06.2016; substantial text overlap with arxiv:1611.09845
Zwischen mal aire und Malaria – Medizinischer Pluralismus bei den Naporuna im Amazonastiefland von Ecuador
Creators: name: Knipper, Michael
Publisher: name: INDIANA
Year: 2001

description: En la práctica médica de los Naporuna en la Amazonia ecuatoriana se puede observar el uso de recursos médicos tanto de la medicina "tradicional” como de la medicina "moderna”. En casos de enfermedad, se suele acudir tanto al curandero como al médico y usar tanto plantas medicinales como medicamentos "occidentales”. El modelo convencional de "pluralismo médico” no ha podido servir para la explicación de los hallazgos de un estudio empírico médico-antropológico entre los Naporuna. Partiendo de la supuesta oposición entre mal aire y Malaria, el presente artículo describe el pluralismo médico entre los Naporuna en base a un gran número de casos concretos. La revisión de varias cuestiones teóricas conduce hacía a una visión más amplia del pluralismo médico, más allá de la percepción errónea de sus elementos como "sistemas médicos” bien definidos.
description: INDIANA, Vol 17/18 (2001)
UV Surface Habitability of the TRAPPIST-1 System
Creators: name: O'Malley-James, J. T.
name: Kaltenegger, L.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: With the discovery of rocky planets in the temperate habitable zone (HZ) of the close-by cool star TRAPPIST-1 the question of whether such planets could harbour life arises. Habitable planets around red dwarf stars can orbit in radiation environments that can be life-sterilizing. UV flares from these stars are more frequent and intense than solar flares. Additionally, their temperate HZs are closer to the star. Here we present UV surface environment models for TRAPPIST-1's HZ planets and explore the implications for life. TRAPPIST-1 has high X-ray/EUV activity, placing planetary atmospheres at risk from erosion. If a dense Earth-like atmosphere with a protective ozone layer exists on planets in the HZ of TRAPPIST-1, UV surface environments would be similar to present-day Earth. However an eroded or an anoxic atmosphere, would allow more UV to reach the surface, making surface environments hostile even to highly UV-tolerant terrestrial extremophiles. If future observations detect ozone in the atmospheres of any of the planets in the HZ of TRAPPIST-1, these would be interesting targets for the search for surface life. We anticipate our assay to be a starting point for in-depth exploration of stellar and atmospheric observations of the TRAPPIST-1 planets to constrain their UV-surface-habitability.
description: 5 pages, 4 figures. Revised version contains extra information on the model atmospheres and minor changes to figures. Accepted for publication in MNRAS Letters
Instituciones y prácticas coloniales en la Amazonía peruana: pasado y presente
Creators: name: Ludescher, Monika
Publisher: name: INDIANA
Year: 2001

description: La primera parte del ensayo está dedicada a las instituciones y prácticas creadas por el régimen colonial español y las particularidades de su implementación en la Amazonía peruana que estuvo a cargo de las órdenes jesuita y franciscana principalmente. Se aborda el tema de las misiones-reducciones, las expediciones de captura de indígenas y las rebeliones indígenas contra el régimen colonial. La segunda parte analiza la evolución de las instituciones y prácticas de origen colonial en la Amazonía peruana durante la época republicana, particularmente las misiones y la servidumbre en el marco de la economía extractiva que caracteriza la región. Finalmente se estudia el rol de las misiones modernas entre los indígenas amazónicos, las formas actuales de servidumbre y de expediciones de captura de indígenas tanto en el marco de la explotación de recursos naturales como en la guerra antisubversiva del Estado.
description: INDIANA, Vol 17/18 (2001)
Formas de organización social entre los Mayas: Hipótesis acerca de las diferencias en la organización socio-política entre los Mayas de tierras altas y bajas
Creators: name: Moßbrucker, Harald
Publisher: name: INDIANA
Year: 2001

description: A pesar de que la antropología generalmente percibe "los mayas” como grupo homogéneo, caben serias dudas al respecto. La organización social y política de los maya de las tierras altas de Guatemala y Chiapas es muy diferente a la de los mayas de las tierras bajas de Yucatán. Conocido es el sistema de cargos en las tierras altas, su total ausencia en las tierras bajas. En el presente ensayo indagamos acerca del desarrollo histórico en ambas regiones y buscamos argumentos que nos pueden explicar las diferencias en la organización sociopolítica. Nuestra hipótesis es que las diferencias mencionadas se puede explicar por la conjugación y la interdependencia de tres factores fundamentales: el medio ambiente, la economía y la cultura específica en cada región.
description: INDIANA, Vol 17/18 (2001)
Discours et relations de sociabilité dans la Brevísima relación de la destrucción de las Indias de Bartolomé de Las Casas
Creators: name: Waldegaray, Marta Inés
Publisher: name: INDIANA
Year: 2001

description: Unas veinte relaciones dirigidas a Vuestra Alteza Felipe II y a Su Majestad de España Carlos Quinto acerca de los abusos cometidos en el Nuevo Mundo durante la primera mitad del siglo XVI componen la Brevísima relación de la destrucción de las Indias (1542) del misionero dominicano Bartolomé de Las Casas. El misionero desarrolla en su escritura una puesta en escena de la palabra escrita con la intención de convencer a su lector. Examinamos el conjunto de las relaciones lingüísticas y de sociabilidad que tensionan estos relatos.
description: INDIANA, Vol 17/18 (2001)
Zukunft gestalten: Herausforderungen an die indigenen Bewegungen in Lateinamerika
Creators: name: Ströbele-Gregor, Juliana
Publisher: name: INDIANA
Year: 2001

description: Los cambios que experimentan los pueblos indígenas de América Latina desde los años 1980 son profundos e influyen en todas las expresiones de la vida. El artículo analiza las reivindicaciones del movimiento indígena y de sus organizaciones, sus logros y retos más importantes así como los conflictos que están enfrentando en la política nacional e internacional. Se cuestiona el cómo los discursos y las reivindicaciones de las organizaciones políticas de los pueblos indígenas reflejan los procesos de cambio dentro de la población indígena. Esta discusión se concretiza en dos ciclos temáticos: Con el tema de las identidades múltiples se plantea la pregunta cómo se consideran –dentro del marco del discurso del "pueblo indígena” y en las demandas de reconocimiento de los "territorios indígenas”– los diferentes modos de vida y estrategias económicas de la población indígena, así como la heterogeneidad social y cultural. Con el tema del derecho consuetudinario, se discute a partir de los derechos humanos y especialmente de los derechos de la mujer, de qué forma el discurso de las organizaciones indígenas y la práctica cotidiana integran los cambios de las percepciones de derecho y valores que se van desarrollando en las comunidades indígenas.
description: INDIANA, Vol 17/18 (2001)
Semi-implicit discontinuous Galerkin methods for the incompressible Navier-Stokes equations on adaptive staggered Cartesian grids
Creators: name: Fambri, Francesco
name: Dumbser, Michael
Publisher: name: arXiv
Year: 2016
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: In this paper a new high order semi-implicit discontinuous Galerkin method (SI-DG) is presented for the solution of the incompressible Navier-Stokes equations on staggered space-time adaptive Cartesian grids (AMR) in two and three space-dimensions. The pressure is written in the form of piecewise polynomials on the main grid, which is dynamically adapted within a cell-by-cell AMR framework. According to the time dependent main grid, different face-based spatially staggered dual grids are defined for the piece-wise polynomials of the respective velocity components. Arbitrary high order of accuracy is achieved in space, while a very simple semi-implicit time discretization is obtained via an explicit discretization of the nonlinear convective terms, and an implicit discretization of the pressure gradient in the momentum equation and of the divergence of the velocity field in the continuity equation. The real advantages of the staggered grid arise in the solution of the Schur complement associated with the saddle point problem of the discretized incompressible Navier-Stokes equations, i.e. after substituting the discrete momentum equations into the discrete continuity equation. This leads to a linear system for only one unknown, the scalar pressure. Indeed, the resulting linear pressure system is shown to be symmetric and positive-definite. The new space-time adaptive staggered DG scheme has been thoroughly verified for a large set of non-trivial test problems in two and three space dimensions, for which analytical, numerical or experimental reference solutions exist. To the knowledge of the authors, this is the first staggered semi-implicit DG scheme for the incompressible Navier-Stokes equations on space-time adaptive meshes in two and three space dimensions.
Glassiness and Heterogeneous Dynamics in Dense Solutions of Ring Polymers
Creators: name: Michieletto, D.
name: Nahali, N.
name: Rosa, A.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Understanding how topological constraints affect the dynamics of polymers in solution is at the basis of any polymer theory and it is particularly needed for melts of rings. These polymers fold as crumpled and space-filling objects and, yet, they display a large number of topological constraints. To understand their role, here we systematically probe the response of solutions of rings at various densities to "random pinning" perturbations. We show that these perturbations trigger non-Gaussian and heterogeneous dynamics, eventually leading to non-ergodic and glassy behaviours. We then derive universal scaling relations for the values of solution density and polymer length marking the onset of vitrification in unperturbed solutions. Finally, we directly connect the heterogeneous dynamics of the rings with their spatial organisation and mutual interpenetration. Our results suggest that deviations from the typical behaviours observed in systems of linear polymers may originate from architecture-specific (threading) topological constraints.
description: main text + SI
High-temporal-resolution electron microscopy for imaging ultrafast electron dynamics
Creators: name: Hassan, M. Th.
name: Baskin, J. S.
name: Liao, B.
name: Zewail, A. H.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Ultrafast Electron Microscopy (UEM) has been demonstrated to be an effective table-top technique for imaging the temporally-evolving dynamics of matter with subparticle spatial resolution on the time scale of atomic motion. However, imaging the faster motion of electron dynamics in real time has remained beyond reach. Here, we demonstrate more than an order of magnitude (16 times) enhancement in the typical temporal resolution of UEM by generating isolated 30 fs electron pulses, accelerated at 200 keV, via the optical-gating approach, with sufficient intensity for efficiently probing the electronic dynamics of matter. Moreover, we investigate the feasibility of attosecond optical gating to generate isolated subfemtosecond electron pulses, attaining the desired temporal resolution in electron microscopy for establishing the Attomicroscopy to allow the imaging of electron motion in the act.
description: 19 Pages, 4 Figures
Convergence from Divergence
Creators: name: Costin, Ovidiu
name: Dunne, Gerald V.
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Other Condensed Matter (cond-mat.other)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We show how to convert divergent series, which typically occur in many applications in physics, into rapidly convergent inverse factorial series. This can be interpreted physically as a novel resummation of perturbative series. Being convergent, these new series allow rigorous extrapolation from an asymptotic region with a large parameter, to the opposite region where the parameter is small. We illustrate the method with various physical examples, and discuss how these convergent series relate to standard methods such as Borel summation, and also how they incorporate the physical Stokes phenomenon. We comment on the relation of these results to Dyson's physical argument for the divergence of perturbation theory. This approach also leads naturally to a wide class of relations between bosonic and fermionic partition functions, and Klein-Gordon and Dirac determinants.
description: 5 pages, 4 figures