cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Imaging the Metlakatlas: shifting representations of a northwest coast mission community
Creators: name: Pastor, Monica Leigh
Publisher: name: University of British Columbia
Year: 2009

description: Metlakatla, British Columbia, an 'isolated' missionary village, was established in 1862 by William Duncan, an Anglican missionary, and a group of Tsimshian on the Northern Northwest Coast. The village was widely praised for its success in 'civilizing' its group of Northwest Coast Native people, but, by 1880, was plagued by turmoil between Duncan and Church and government authorities. The turmoil in Metlakatla, B.C. led to an unprecedented move when, in 1887, Duncan and the majority of the villagers relocated to Annette Island in Southern Alaska. Along with this move to United States jurisdiction came shifts in the construction and representation of the colonial project at Metlakatla. Metlakatla, B.C., represented as a model village of equal and subordinate workers, was full of internal fractures which could be viewed through disjunctures among the various representations of the site. With the move to Alaska, the representations of Metlakatla, once constructed in the vein of homogeneous worker's housing promoted in England during the era of Evangelical reform, shifted to present a middle class, American village which participated in capitalism and leisure activities. This thesis attempts to link the shifting representations of the colonial project of Metlakatla to both local and broader political movements. The shifts correspond to changing views toward the Indian and assimilation, shifts from a Canadian/British terrain to an American one, changing notions of the worker and emerging fears of communism, and shifts in the technology used to capture photographic representations of the site. In addition to these broad trends, the shifting constructions of the community of Metlakatla may have corresponded to the navigation of a very specific Alaskan political terrain and to changing dynamics within the community. Thus, through an examination of the visual representations of Metlakatla, B.C. and Metlakatla, Alaska, this thesis attempts to complicate the understanding of this well known colonial project on the Northern Northwest Coast. In addition, by relating these images to the broader political climate with which the site was engaged, the paper shows fractures within the community and possible explanations for the dramatic transition in the representation of Metlakatla in its second setting in the United States.
A multiwavelength investigation of the temperature of the cold neutral medium
Creators: name: Roy, Nirupam
name: Chengalur, Jayaram N.
name: Srianand, Raghunathan
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present measurements of the H I spin temperatures (T_s) of the Cold Neutral Medium (CNM) towards radio sources that are closely aligned with stars for which published H_2 ortho-para temperatures (T_{01}) are available from UV observations. Our sample consists of 18 radio sources close to 16 nearby stars. The transverse separation of the lines of sight of corresponding the UV and radio observations varies from 0.1 to 12.0 pc at the distance of the star. The ultraviolet (UV) measurements do not have velocity information, so we use the velocities of low ionization species (e.g Na I, K I, C I) observed towards these same stars to make a plausible identification of the CNM corresponding to the H_2 absorption. We then find that T_{01} and T_s match within observational uncertainties for lines-of-sight with H_2 column density above 10^{15.8} cm^{-2}, but deviate from each other below this threshold. This is consistent with the expectation that in the CNM T_s tracks the kinetic temperature due to collisions and that T_{01} is driven towards the kinetic temperature by proton exchange reactions.
description: 6 pages, 2 tables, 2 figures. Accepted for publication in MNRAS Letters. Abstract modified. The definitive version is available at http://www.blackwell-synergy.com
Farmers' Use of Improved Seed Selection Practices in Mexican Maize: Evidence and Issues from the Sierra de Santa Marta
Creators: name: Rice, Elizabeth
name: Smale, Melinda
name: Blanco, Jose-Luis
name: Rice, Elizabeth
name: Smale, Melinda
name: Blanco, Jose-Luis
Publisher: name: Unknown
Year: 1997
Subjects: Crop Production/Industries

description: The principal advantage of in situ conservation is that it allows adaptive evolutionary processes to continue in the species that are being conserved. For a cultivated crop species, in situ conservation involves farmers' management of their own genetic resources even as the farmers themselves adapt to a changing environment. Improved seed selection practices and other on-farm breeding strategies have been proposed as a means of providing economic incentives for farmers to continue growing traditional varieties or landraces identified as important for conservation. This paper describes a pilot study among a group of indigenous farmers in the Sierra de Santa Marta, Veracruz, Mexico, who have collaborated in such efforts. The findings raise key issues about the potential impact of such an approach, as well as some useful methodological points for applied economists. In the study area, there is a high frequency of experimentation, exchange, loss, and replacement of seed over time -- seed of the same varieties, including both modern and traditional varieties. This poses a challenge for economists' models of varietal choice, which tend to be based on static perceptions of a 'variety' as well as simplistic distinctions between 'modern' and 'traditional' varieties. Seed selection in the study area is not a single event but an iterative, continuous process. Women may be more involved in seed selection than previously thought, which may have implications for the welfare impact of new seed selection practices. Other implications of the study are that (1) the impact of introducing practices to enhance farmers' varieties is likely to be diffuse and difficult to observe, predict, or measure, and (2) in developing analytical models of farmer decision-making as it affects the diversity of genetic resources on the farm, the most appropriate unit of analysis for predicting the effects of some policy interventions is not likely to be the individual farmer or the individual farm household. A better understanding of the 'social infrastructure' shaping seed and information flows is needed, since in the diffusion of innovations of this type, the seed system is based entirely on farmers and their interactions.
A study of collider signatures for two Higgs doublet models with a Pseudoscalar mediator to Dark Matter
Creators: name: Butterworth, J. M.
name: Habedank, M.
name: Pani, P.
name: Vaitkus, A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Two Higgs doublet models with an additional pseudoscalar particle coupling to the Standard Model and to a new stable, neutral particle, provide an attractive and fairly minimal route to solving the problem of Dark Matter. They have been the subject of several searches at the LHC. We study the impact of existing LHC measurements on such models, first in the benchmark regions addressed by searches and then after relaxing some of their assumptions and broadening the parameter ranges considered. In each case we study how the new parameters change the potentially visible signatures at the LHC, and identify which of these signatures should already have had a significant impact on existing measurements. This allows us to set some first constraints on a number of so far unstudied scenarios.
description: 20 pages, 9 figures; added EW constraints contours, extended explanation of WW model-dependency, extended motivation for pseudoscalar mediators, corrected typos
พินิจวาทศิลป์โน้มน้าวใจในมหาชาติคำหลวง
Creators: name: นิพัทธ์ แย้มเดช
Publisher: name: คณะศิลปศาสตร์ มหาวิทยาลัยธรรมศาสตร์
Year: 2017
Subjects: วาทศิลป์โน้มน้าวใจ
มหาชาติคำหลวง

description: วรรณวิทัศน์, 17, พฤศจิกายน, 291-322
Quantum measurements and entropic bounds on information transmission
Creators: name: Barchielli, Alberto
name: Lupieri, Giancarlo
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: While a positive operator valued measure gives the probabilities in a quantum measurement, an instrument gives both the probabilities and the a posteriori states. By interpreting the instrument as a quantum channel and by using the monotonicity theorem for relative entropies many bounds on the classical information extracted in a quantum measurement are obtained in a unified manner. In particular, it is shown that such bounds can all be stated as inequalities between mutual entropies. This approach based on channels gives rise to a unified picture of known and new bounds on the classical information (Holevo's, Shumacher-Westmoreland-Wootters', Hall's, Scutaru's bounds, a new upper bound and a new lower one). Some examples clarify the mutual relationships among the various bounds.
description: 29 pages, 2 figures, uses qic.sty
Adoption, Management, and Impact of Hybrid Maize Seed in India
Creators: name: Singh, R.P.
name: Morris, Michael L.
name: Singh, R.P.
name: Morris, Michael L.
Publisher: name: Unknown
Year: 1997
Subjects: Crop Production/Industries

description: This paper presents results of a 1995 survey of 864 maize-growing households in six states that account for more than 70% of India's maize area: Andhra Pradesh, Bihar, Karnataka, Madhya Pradesh, Rajasthan, and Uttar Pradesh. The current adoption of improved open-pollinated maize varieties (OPVs) and hybrids is quantified, the relationship between adoption of improved germplasm and use of improved crop management practices is examined, the economic impacts of adoption are estimated, farmers' seed procurement and management practices are described, and implications for maize research and development policy are discussed. On the whole, the survey results confirm that India's national maize seed industry is expanding rapidly. Since seed policy reforms were introduced in the late 1980s, the area planted to improved OPVs and hybrids has grown rapidly, and adoption of improved germplasm has fueled important changes in farmers' crop management practices. However, special policy measures may be needed to ensure that the benefits of improved germplasm are widely shared, such as the introduction of targeted input subsidies designed to reduce the cost of adopting improved seed and complementary inputs, government investment in irrigation infrastructure to reduce production risk in drought-prone environments, and market development initiatives to provide small-scale producers with access to stable and reliable outlets where they can sell surplus grain.
Non-Supersymmetric Attractors and Entropy Function
Creators: name: Alishahiha, Mohsen
name: Ebrahim, Hajar
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the entropy of non-supersymmetric extremal black holes which exhibit attractor mechanism by making use of the entropy function. This method, being simple, can be used to calculate corrections to the entropy due to higher order corrections to the action. In particular we apply this method for five dimensional non-supersymmetric extremal black hole which carries two magnetic charges and find the R^2 corrections to the entropy. Using the behavior of the action evaluated for the extremal black hole near the horizon, we also present a simple expression for C-function corrected by higher order corrections.
description: 15 pages, Latex file, v2: references and some additional comments added, minor corrections, some comments about 5D supersymmetric BH added. v3:minor corrections, few comments added, refs. added
Íconos del mundo de habla hispánica
Creators: name: Cristoffanini, Pablo
name: Cancino, Rita
Publisher: name: Sociedad y Discurso
Year: 2015

description: Es bien sabido que la palabra ícono proviene del griego y significa imagen. Pero no cualquier imagen sino aquellas que generan devoción. En la tradición cristiana el prototipo de ícono es Jesús. Las imágenes que lo han representado nos permiten intuir inmediatamente algunas de las características centrales del ícono. Ya en los decenios posteriores a su crucifixión se habían difundido variadas y ricas leyendas sobre su vida, algunas de ellas recogidas en los evangelios canónicos otras en los apócrifos. Traspasando rápidamente su contexto original de profeta judío Jesús ha sido visto con las características de un emperador romano (hijo biológico de Dios) un rey medieval, un revolucionario social, un yogui, un maestro del tantra, etc. El contexto histórico y geográfico original no puede explicar las ricas y variadas significaciones que la imagen de Jesús ha tenido y seguirá teniendo probablemente. A partir de estas consideraciones, podemos definir una imagen icónica es aquella que ha alcanzado grados excepcional de difusión y reconocibilidad y ha transportado una rica y variada serie de asociaciones para un largo número de personas a través del tiempo y las culturas, de forma que en mayor o menor grado ha trasgredido los parámetros de su creación original, función, contexto y significación (Kemp, 2012: 3)
description: Sociedad y Discurso, No 26 (2014)
Transcription of file 021_B (collection LA 256)
Creators: name: Parker, Verdena
name: Chase, Sara
name: Lee-Wynant, Tyler
name: Spence, Justin
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2020
Subjects: subject: hup

description: Audio file VP-150816-12: transcription of file 021_B from LA 256 (collection of recordings given to the Berkeley Language Center by Verdena), from 2:26 to 4:48. Due to re-numbering, tape 021_B has been assigned to the CLA item number LA256.021, audio file LA256.021B.
Fluctuations and thermodynamic geometry of the chiral phase transition
Creators: name: Castorina, Paolo
name: Lanteri, Daniele
name: Ruggieri, Marco
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the thermodynamic curvature, $R$, around the chiral phase transition at finite temperature and chemical potential, within the quark-meson model augmented with meson fluctuations. We study the effect of the fluctuations, pions and $σ$-meson, on the top of the mean field thermodynamics and how these affect $R$ around the crossover. We find that for small chemical potential the fluctuations enhance the magnitude of $R$, while they do not affect substantially the thermodynamic geometry in the proximity of the critical endpoint. Moreover, in agreement with previous studies we find that $R$ changes sign in the pseudocritical region, suggesting a change of the nature of interactions at the mesoscopic level from statistically repulsive to attractive. Finally, we find that in the critical region around the critical endpoint $|R|$ scales with the correlation volume, $|R| =K\;ξ^3$, with $K = O(1)$, as expected from hyperscaling; far from the critical endpoint the correspondence between $|R|$ and the correlation volume is not as good as the one we have found at large $μ$, which is not surprising because at small $μ$ the chiral crossover is quite smooth; nevertheless, we have found that $R$ develops a characteristic peak structure, suggesting that it is still capable to capture the pseudocritical behavior of the condensate.
Che Guevara: Las significaciones de un ícono global
Creators: name: Cristoffanini, Pablo R.
Publisher: name: Sociedad y Discurso
Year: 2015

description: Resumen: Ernesto “Che” Guevara es sin duda alguna el ícono latinoamericano más difundido globalmente y con la mayor densidad de significaciones. El presente artículo interpreta y explica el contexto de las diferentes significaciones de su imagen. En sus orígenes su imagen icónica estuvo asociada indisolublemente a los logros y connotaciones de la Revolución Cubana en el contexto de la Guerra Fría. En los actuales las significaciones de la imagen deben ser leídas en el contexto de la cultura global del consumo. En el artículo se analiza y explica cómo una conjunción de factores tales como estrategias comunicacionales y las connotaciones de su imagen convirtieron al Che Guevara, a pesar de su total fracaso político y militar en Bolivia y de su violenta muerte, en un ícono político, religioso, cultural y en objeto de consumo. Finalmente se contrastan las significaciones de su imagen surgidas en el contexto originario con nuevas investigaciones que cuestionan las significaciones asociadas con su mito.
description: Sociedad y Discurso, No 26 (2014)
The Spin-Statistics Theorem for Anyons and Plektons in d=2+1
Creators: name: Mund, Jens
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mathematical Physics (math-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences
subject: 81T05

description: We prove the spin-statistics theorem for massive particles obeying braid group statistics in three-dimensional Minkowski space. We start from first principles of local relativistic quantum theory. The only assumption is a gap in the mass spectrum of the corresponding charged sector, and a restriction on the degeneracy of the corresponding mass.
description: 21 pages, 2 figures. Citation added; Minor modifications of Appendix A
The Maize Seed Industries of Brazil and Mexico: Past Performance, Current Issues, and Future Prospects
Creators: name: Lopez-Pereira, Miguel A.
name: Garcia, Joao Carlos
name: Lopez-Pereira, Miguel A.
name: Garcia, Joao Carlos
Publisher: name: Unknown
Year: 1997
Subjects: Crop Production/Industries

description: This paper describes results of a study of the main factors affecting the development of the maize seed industries in Brazil and Mexico (and, by extension, other developing countries). The authors develop a framework that researchers and policy makers can use to evaluate seed industry performance in developing countries. This framework is used to analyze the seed industries of Brazil and Mexico, where very different sets of circumstances influence seed industry development, efficiency, and structure. The analysis gives special attention to the different maize breeding strategies pursued by the public and private sectors, measures of industry competitiveness and efficiency, and the trade-offs involved in developing and producing different kinds of maize seed, particularly improved open-pollinated maize varieties versus different types of hybrids. The authors identify key seed industry issues for researchers, administrators of national maize programs, and agricultural policy makers in developing countries, especially issues related to the appropriate roles for public and private organizations in maize seed industries in the developing world.
The red optical afterglow of GRB 030725
Creators: name: Pugliese, G.
name: Møller, P.
name: Gorosabel, J.
name: Jensen, B. L.
name: Fynbo, J. P. U.
name: Hjorth, J.
name: Jørgensen, S. F.
name: Monard, B.
name: Vinter, C.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a photometric study of the optical counterpart of the long-duration Gamma Ray Burst (GRB) 030725, which triggered the HETE FREGATE and WXM instruments on July 25th, 2003, and lasted more than 160s. An optical counterpart was identified at the Bronberg Observatory in South Africa about 7 hours after the burst occurred. The optical afterglow (OA) was observed between 4 and 15 days after the burst with the 1.54m Danish telescope at La Silla in the V, Rc, and Ic bands. We fit a broken power law to the data and determine a break time in the light curve between 16 hours and 4.7 days after the first detection of the burst. The decay slope is alpha1 = -0.59 +0.59/-0.44 before and alpha2 = -1.43 +/- 0.06 after the break. A bump may be present in the light curve, only significant at the 2-sigma level, 13.9 days after the main burst. The spectral slope of the OA, measured 12 days after the burst, is -2.9 +/- 0.6 , i.e. it falls in the extreme red end of the distribution of previous OA spectral slopes. Observations of the field 8 months after the burst with the EMMI instrument on the NTT telescope (La Silla) resulted in an upper limit of Rc=24.7 mag for the host galaxy of GRB 030725. The OA of GRB 030725 was discovered at a private, non-professional observatory and we point out that with the current suite of gamma ray satellites, an effort to organize future contributions of amateur observers may provide substantial help in GRB light curve follow up efforts.
description: Accepted for publication in A&A, 6 pages, 2 figures
The transformer earthquake alerting model: A new versatile approach to earthquake early warning
Creators: name: Münchmeyer, Jannes
name: Bindi, Dino
name: Leser, Ulf
name: Tilmann, Frederik
Publisher: name: arXiv
Year: 2020
Subjects: subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: Earthquakes are major hazards to humans, buildings and infrastructure. Early warning methods aim to provide advance notice of incoming strong shaking to enable preventive action and mitigate seismic risk. Their usefulness depends on accuracy, the relation between true, missed and false alerts, and timeliness, the time between a warning and the arrival of strong shaking. Current approaches suffer from apparent aleatoric uncertainties due to simplified modelling or short warning times. Here we propose a novel early warning method, the deep-learning based transformer earthquake alerting model (TEAM), to mitigate these limitations. TEAM analyzes raw, strong motion waveforms of an arbitrary number of stations at arbitrary locations in real-time, making it easily adaptable to changing seismic networks and warning targets. We evaluate TEAM on two regions with high seismic hazard, Japan and Italy, that are complementary in their seismicity. On both datasets TEAM outperforms existing early warning methods considerably, offering accurate and timely warnings. Using domain adaptation, TEAM even provides reliable alerts for events larger than any in the training data, a property of highest importance as records from very large events are rare in many regions.
description: 13 pages main text, 16 pages appendix. This article has been accepted for publication in Geophysical Journal International Published by Oxford University Press on behalf of the Royal Astronomical Society
Salvador Allende: Icono de la Vía Chilena al Socialismo
Creators: name: Cancino, Hugo
Publisher: name: Sociedad y Discurso
Year: 2015

description: En este artículo presentamos un análisis histórico de la larga trayectoria política del líder socialista Salvador Allende que culminó con su elección a Presidente de Chile representando a la Unidad Popular en 1973 hasta su inmolación defendiendo el Estado de Derecho frente al Golpe Militar, en el combate del Palacio de la Moneda en Santiago de Chile el 11 de septiembre de 1973. Salvador Allende como otros líderes políticos y revolucionarios de la América Latina ha llegado a ser un ícono, un símbolo de la consecuencia entre las ideas y la acción. Allende fue el exponente del proyecto de la vía chilena al socialismo, es decir una vía no armada, institucional y política para llegar al socialismo que fue brutalmente interrumpida por el Golpe Militar encabezado por Pinochet. Esta posición lo diferencia radicalmente del ícono guerrillero, Ernesto Che Guevara, cuyo carisma y símbolo ha trascendido las fronteras nacionales. En este artículo postulamos que la iconización de Allende tiene sentido y fundamentos suficientes en su vida, en su negación a rendirse ante los militares golpistas y en su sacrifico final por la defensa de la Constitución que él juró respectar y defender al ser elegido Presidente de Chile.
description: Sociedad y Discurso, No 26 (2014)
On the use of the Kodama vector field in spherically symmetric dynamical problems
Creators: name: Racz, Istvan
Publisher: name: arXiv
Year: 2005
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: It is shown that by making use of the Kodama vector field, as a preferred time evolution vector field, in spherically symmetric dynamical systems unexpected simplifications arise. In particular, the evolution equations relevant for the case of a massless scalar field minimally coupled to gravity are investigated. The simplest form of these equations in the 'canonical gauge' are known to possess the character of a mixed first order elliptic-hyperbolic system. The advantages related to the use of the Kodama vector field are two-folded although they show up simultaneously. First, it is found that the true degrees of freedom separate. Second, a subset of the field equations possessing the form of a first order symmetric hyperbolic system for these preferred degrees of freedom is singled out. It is also demonstrated, in the appendix, that the above results generalise straightforwardly to the case of a generic self-interacting scalar field.
description: 9 pages, to appear in Class. Quant. Grav
Lupe Vélez, ícono de la femineidad latina en los Estados Unidos 1908-1944
Creators: name: Palacio, Celia Del
Publisher: name: Sociedad y Discurso
Year: 2015

description: El presente artículo pretende analizar a una actriz que ha sido en parte olvidada el día de hoy, aunque conserva un pequeño grupo de admiradores que la idolatra. En su momento, fue conocida y admirada en diversas partes del mundo, no solo en Estados Unidos y México. Fue considerada entonces, y sigue siendo considerada hoy por algunos de sus admiradores y especialistas, como un ícono de la femineidad latina en los Estados Unidos. Esta mujer fue una de las primeras (junto con Dolores del Río) en incursionar en la industria fílmica hollywoodense y rompió con el estereotipo de la mujer latina que prevalecía en las películas producidas en los Estados Unidos en las décadas de 1920-40. En México no existe ningún acercamiento académico a esta actriz. Aquí, desde los estudios culturales, se pretende realizar una panorámica de lo que fue Lupe Vélez en vida, del personaje que ella hizo de sí misma, y cómo se ha representado y resignificado dicho personaje después de su muerte en la cultura popular no solo norteamericana.
description: Sociedad y Discurso, No 26 (2014)
Democratización y despolitización del ámbito municipal. La participación ciudadana a la luz del discurso peronista.
Creators: name: Poggi, Marina
name: Salomón, Alejandra
Publisher: name: Sociedad y Discurso
Year: 2015

description: Las interpretaciones historiográficas han contribuido a que se pensara la etapa peronista (Argentina, 1946-1955) como un ejemplo de populismo latinoamericano. La aparente contradicción entre ampliación ciudadana y búsqueda de unanimismo político que el populismo puso de manifiesto es sólo un aspecto revelador de la forma en que se moldeó la democracia argentina durante este período.

En este marco, y atendiendo a que el ejercicio de la ciudadanía a nivel local ha sido una problemática poco transitada, el presente trabajo se propone examinar las representaciones sociales del peronismo sobre la participación en el sistema político y su correlato en la redefinición institucional. En particular, analiza la Ley Orgánica de Municipalidades de 1949 y el debate suscitado en la Legislatura de la provincia de Buenos Aires, evaluando cambios y continuidades respecto a la Ley Orgánica de Municipalidades de 1937, vigente hasta entonces. Se revisarán los tópicos que aparecen como ejes de las discusiones legislativas y las estrategias enunciativas para legitimar las visiones dominantes. ¿Existe un nuevo modelo de participación ciudadana en la esfera local en la proclamada Nueva Argentina?
description: Sociedad y Discurso, No 26 (2014)
Sources of Productivity Growth in Wheat: A Review of Recent Performance and Medium- to Long-Term Prospects
Creators: name: Rejesus, Roderick M.
name: Heisey, Paul W.
name: Smale, Melinda
name: Rejesus, Roderick M.
name: Heisey, Paul W.
name: Smale, Melinda
Publisher: name: Unknown
Year: 1999
Subjects: Crop Production/Industries

description: Sources of yield growth in wheat are investigated based on a stylized framework of technical change. Evidence suggests that the relative contribution of input intensification to yield growth has diminished in recent years and is likely to continue to decline in the future. One potential source of yield growth in wheat during the medium to long term is improved efficiency of input use, rather than input intensification, through sustainable wheat production practices rather than pure input increases. Other large gains could be made with continuous adoption of newer and better modern varieties based on advances in wheat breeding. Wide crossing and biotechnology could improve the stability of wheat yields in the intermediate term; their long-term impact on yield under optimal conditions is less certain. World wheat demand is likely to grow more slowly over the next 30 years than it did in the past 30 years. At the same time, a wider variety of technological options will need to be tapped over the next three decades to achieve the necessary gains in wheat yields. Research costs per unit of increased wheat production are likely to be somewhat higher. Nonetheless, continued investment in wheat research is necessary to achieve production levels consistent with constant or slowly declining real world wheat prices.
El retorno de población desplazada en contexto con el conflicto armado y los actores en Colombia
Creators: name: Castillo, Victor Enrique Bonilla
Publisher: name: Sociedad y Discurso
Year: 2015

description: La coyuntura del proceso de paz que se está llevando a cabo en Colombia y con ello la preocupación por la reu bicación de las víctimas del conflicto, en este caso los desplazados, la seguridad en el acompañamiento, y el bienestar socioeconómico de esta población ha hecho que el tema tome mayor interés. Esto sugiere la necesidad de investigar sobre este ámbito del conocimiento, que cada vez adquiere más importancia dentro del contexto general de la situación de desplazamiento por violencia que causa el conflicto armado en Colombia, ocasionado por los diferentes actores de la guerra: paramilitarismo, guerrilla y Estado.
description: Sociedad y Discurso, No 26 (2014)
The roles of goal orientation, task-specific self-efficacy and motivation/emotion control in the academic performance of college students
Creators: name: Poole, Shannon L.
Publisher: name: University of British Columbia
Year: 2009

description: The purpose of this research was to examine the types of emotional and motivational difficulties experienced by college age students and the types of emotional and motivational control strategies that they report using. Further, the study examined how goal orientation and self-efficacy beliefs influence students' motivational and emotional response to a difficult task. Finally, the study explored the interrelationships between goal orientation, self-efficacy beliefs, motivational and emotional response, motivation and emotion control strategy use, task persistence and academic achievement, to try to explain how volition control strategy use influences task persistence and academic achievement. Participants in the study (n = 186) completed questionnaires that measured learning and performance goals, self-efficacy, emotional and motivational difficulties, use of motivation and emotion control strategies, task persistence, and reading comprehension (as a measure of achievement). Results suggested that college-age students experience a range of emotional and motivational problems and use a variety of strategies to overcome those difficulties. Students reported having emotional problems more frequently than motivational problems, but they reported using motivation control strategies more frequently than emotional control strategies. Analyses also revealed that students high in learning goals were less likely to report motivational problems, more likely to report using volition control strategies, and more likely to persist. Students high in performance goals were more likely to report both emotional and motivational problems. Students high in self-efficacy were less likely to report both types of problems. Self-efficacy was also highly correlated with use of motivation control strategies, persistence, and achievement. Finally, the strongest predictor of task persistence and achievement was a lack of motivational problems. This suggests that self-efficacy and learning goals not only exert a direct effect on persistence and achievement, but also that they may exert an indirect effect on task engagement by protecting students from experiencing motivational problems. Theoretical and practical implications of these findings are discussed.
Analisis del sistema argentino de investigacion agropecuaria
Creators: name: Parellada, Gabriel H.
name: Ekboir, Javier M.
name: Parellada, Gabriel H.
name: Ekboir, Javier M.
Publisher: name: Unknown
Year: 2003
Subjects: Research and Development/Tech Change/Emerging Technologies

description: El sector agropecuario ha desempeñado siempre un papel fundamental en la economía argentina. En la segunda mitad del siglo XX, los productos de origen pampeano tuvieron un fuerte crecimiento gracias a la adopción masiva de nuevas tecnologías de comercialización y producción. Estas tecnologías fueron desarrolladas por redes de agentes que incluyeron en forma prominente productores innovadores, empresas privadas e investigadores de instituciones públicas. Sin embargo, las instituciones mismas tuvieron una participación limitada, y su mayor impacto se derivó del desarrollo de semillas mejoradas de los principales cultivos pampeanos. En la primera mitad del siglo XX, Argentina construyó un sistema público de investigación fuerte, localizado fundamentalmente en las universidades nacionales. Una característica del sistema es que estaba organizado en base a una concepción lineal de la ciencia, la que desincentivaba las colaboraciones interdisciplinarias, interinstitucionales y/o con agentes que no fueran investigadores formales. A partir de la década del 50, Argentina creó un número de institutos tecnológicos destinados a prestar apoyo técnico a las políticas públicas. El sistema público comenzó a deteriorase por cuestiones políticas y económicas a partir del golpe de estado de 1966 y no ha podido recuperarse hasta la fecha. En la década del 90 hubo algunos intentos de reformar el sistema público, pero estos esfuerzos no tuvieron éxito por falta de continuidad y de recursos. A pesar del deterioro del sistema público de investigación, el sector privado argentino (especialmente las empresas proveedoras de insumos y asociaciones de productores) generó una oferta continua de innovaciones. La característica de estas innovaciones es que no requerían inversiones importantes en investigación (por ejemplo, tecnologías de manejo de cultivos) o eran importadas directamente de los países desarrollados (por ejemplo, agroquímicos).
Mechanisms of the Intensity Dependent Refractive Index in Ultrastrongly Coupled Organic Cavity Polaritons
Creators: name: Schwab, Samuel
name: Christopherson, William
name: Crescimanno, Michael
name: Singer, Kenneth
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optics (physics.optics)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The nonlinear optical response of organic polaritonic matter has received increasing attention due to their enhanced and controllable nonlinear response and their potential for novel optical devices such as compact photon sources and optical and quantum information devices. Using z-scans at different wavelengths and incident powers we have studied the nonlinear optical dispersion of ultrastrongly coupled organic cavity polaritons near the lower polariton band. We show that the up to 150-fold enhancement of the nonlinear response compared to a cavity-less organic film arises from an intensity-dependent polaritonic resonant frequency shift ("blueshift"). Consequently, we find that these z-scan data can only be described by several terms of a power series expansion in intensity whose respective contributions depend on power broadening and detuning from the lower polariton band. We further show that the nonlinear response can be quantitatively described by a three-level molecular quantum model coupled to the cavity in which saturation reduces the Rabi splitting, thus accounting for the lower polariton band's observed blueshift.
Antidepressant effect of embedding thread in acupoints in rats with social isolation
Creators: name: Dávila-Hernández, Amalia
name: Zamudio, Sergio Roberto
name: González-González, Roberto
name: Campos-Rodríguez, Carolina
name: Juan, Eduardo Ramírez-San
Publisher: name: F1000Research
Year: 2016

description: Introduction: depression is a multifactorial disease, disabling and high prevalence in the world, characterized by decay mood, decreased self-esteem and ability to experience pleasure, with affective, cognitive, vegetative and motor manifestations, with serious repercussions on the quality of life and socio-occupational performance. Given the importance of depression and the undesirable effects of conventional therapy, it is necessary to use multidisciplinary management, for example the acupuncture that has been shown to be useful and with a fast effect. The acupuncture is a non-pharmacologic treatment, as well as a simple procedure and without adverse effects, has proven to be useful in the treatment of depression, and using embedding thread in acupoints can be a prolonged stimulus and less invasive.

Conclusions: 1. Social isolation induced depression, reflected as a significant increase in immobility time in the forced swimming test. 2. Embedded thread in acupoints induced a decrease in immobility time (antidepressant effect) and this was significantly higher than that produced with fluoxetine.
Pair production in inhomogeneous fields
Creators: name: Gies, Holger
name: Klingmuller, Klaus
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We employ the recently developed worldline numerics, which combines string-inspired field theory methods with Monte-Carlo techniques, to develop an algorithm for the computation of pair-production rates in scalar QED for inhomogeneous background fields. We test the algorithm with the classic Sauter potential, for which we compute the local production rate for the first time. Furthermore, we study the production rate for a superposition of a constant E field and a spatially oscillating field for various oscillation frequencies. Our results reveal that the approximation by a local derivative expansion fails already for frequencies small compared to the electron mass scale, whereas for strongly oscillating fields a derivative expansion for the averaged field represents an acceptable approximation. The worldline picture makes the nonlocal nature of pair production transparent and facilitates a profound understanding of this important quantum phenomenon.
description: 16 pages, 8 figures; v2: minor corrections, PRD version
Optimal Search in Ex situ Collections of Wheat Genetic Resources
Creators: name: Gollin, Douglas
name: Smale, Melinda
name: Skovmand, Bent
name: Gollin, Douglas
name: Smale, Melinda
name: Skovmand, Bent
Publisher: name: Unknown
Year: 1998
Subjects: Crop Production/Industries

description: This paper develops a theoretical model for analyzing gene bank management decisions regarding the search for traits of economic value in ex situ collections of wheat. The model is applied to data on the probability of finding useful sources of resistance to Russian wheat aphid (Diuraphis noxia) and septoria tritici leaf blotch, using Monte Carlo simulations for sampling distributions, simulations of varietal diffusion paths, and actual cost data from searches. Three specific questions are posed and answered: (1) what is the optimal size of search among genetic resources of a given type for a trait of economic value? (2) what is the value of specialized knowledge about which genetic resources are most likely to display resistance? and (3) how should search resources be allocated across types of genetic resources? Results demonstrate the sensitivity of the optimal size of search to the economic importance of the problem, the probability distributions of the trait in different types of genetic resources, and the costs and time lags associated with transferring the trait into usable breeding material. The costs and time lags involved with conventional pre-breeding techniques imply that in some searches, certain categories of genetic resources (such as landraces) will be systematically ignored. The fact that they may be rarely utilized does not imply that collections of landraces have no value, however, as shown in the case of Russian wheat aphid. Though applied here to data on insect and disease resistance, the model can be adapted to search decisions for other types of traits.
Language lesson: questions and answers, commands
Creators: name: Parker, Verdena
name: Chase, Sara
name: Lee-Wynant, Tyler
name: Spence, Justin
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2020
Subjects: subject: hup

description: Audio file VP-150816-13: language lesson: practicing questions and answers in Hupa, with a brief review of commands at 2:20.
A cloud-based software for the functional and taxonomic analysis of metagenomic DNA samples
Creators: name: Wamba, Roger
name: Manley, Eric
Publisher: name: F1000Research
Year: 2016

description: As science progresses to read the complete genetic blueprint for building a human being and any other species, as well as other functional mechanisms; an exponential amount of datasets (“macromolecular structures, genome sequences, and the results of functional genomics and metagenomics experiments” (Luscombe, Greenbaum, & Gerstein, 2001, para. 2)) is being generated and stored up in giant computer systems. Life scientists are becoming increasingly confronted with an insurmountable data analysis problem using their “wet labs” alone, and as more species' genomes are sequenced, computational analysis of this data has become an absolute necessity. For the past decade, Computer Scientists, mathematicians and Statisticians have been called to the rescue in order to develop computational methodologies and tools to aid in the analysis of this data, operating within the framework of the young interdisciplinary field of Bioinformatics.

In this research endeavour, we seek to develop computational tools to address a current microbiological problem, as clearly captured by Tringe & Rubin in their 2005 paper (Tringe & Rubin, 2005, para. 1), “Many species are difficult to study in isolation because they fail to grow in laboratory culture, depend on other organisms for critical processes, or have become extinct. Methods that are based on DNA sequencing circumvent these obstacles, as DNA can be isolated directly from living or dead cells in various contexts.”

BioWebtools, our cloud-based software, will be used in the study of microbial or viral communities sampled directly from their natural environment. This will help scientists answer the question as to whether new drugs with different mode of actions and with new materials can be found in rare, under-studied or not-yet-studied microorganisms living in various natural habitats across the world, as well as identify and characterize unknown pathogens necessary for clinical and medicinal applications. Combined with other metagenomic and general bioinformatics tools and computer Application Programming Interfaces, by analysing uncultured microbial diversity present in an environment, BioWebtools could provide new insight into therapeutic and biotechnological applications, output information of high diagnostic value for infectious diseases and other chronic health conditions (Hocquette, 2005).

We integrated statistical, mathematical, algorithmic and general computational concepts to present computational models for 6 distinct biological Challenges:Binning metagenomic sampleFind (Ori) Origin Of Replication in BacteriaFind Regulatory motifs (Transcription Binding Sites)Assemble genomeSequence AntibioticsComparing DNA Sequences
title: Ansprachen, gehalten Donnerstag, den 22. Januar 1942 bei der Abdankung von Dr. jur. Gustav Hürlimann-König, geboren den 30. März 1872, gestorben den 19. Januar 1942
title: Dr. jur. Gustav Hürlimann-König, 1872-1942
titleType: AlternativeTitle
Creators: name: Müller, Rudolf
name: Blass, Robert
Publisher: name: Zentralbibliothek Zürich
Year: 1942
Subjects: subject: 920 Biografien, Genealogie, Insignien
subject: Nachruf
subject: Zürich-Fluntern
subject: Rechtsanwalt

description: Titel auf dem Umschlag: Dr. jur. Gustav Hürlimann-König, 1872-1942
description: Enthält: Abdankungsrede von Pfarrer Rudolf Müller von Münsingen (Bern), gehalten in der Kirche Fluntern ; Abschiedsworte von Herrn Rechtsanwalt Dr. Robert Blass, gesprochen im Krematorium ; Gebet, gesprochen von Pfarrer Rudolf Müller im Krematorium.
Adoption of Maize Conservation Tillage in Azuero, Panama
Creators: name: De Herrera, Adys Pereira
name: Sain, Gustavo
name: De Herrera, Adys Pereira
name: Sain, Gustavo
Publisher: name: Unknown
Year: 1999
Subjects: Crop Production/Industries

description: An aggressive research and validation program launched in 1984 in Azuero, Panama, yielded a recommendation advocating zero tillage for maize production. Ten years later, maize farmers in Azuero used three land preparation methods: conventional tillage, zero tillage, and minimum tillage (an adaptation of the zero tillage technology). This study aimed to quantify the adoption of zero and minimum tillage for maize in Azuero; identify factors influencing adoption of the different land preparation practices; and analyze the implications of the findings for future maize research and extension. Between 1985 and 1994, farmers in Region I of Azuero changed from conventional tillage to zero (33%) and minimum tillage (43%). In Regions II and III, most farmers still practiced conventional tillage in 1994, although 34% had switched to minimum tillage. Across regions, adoption of conservation tillage was motivated by potential cost savings rather than longer term considerations such as reduced soil erosion. The factors that limit adoption of conservation tillage vary by region. In Region I, adoption of conservation tillage is limited by land rental rather than ownership and by lack of conservation tillage planting equipment. In Regions II and III, lack of information about conservation tillage technology limits the probability of adoption. Future research should examine soil compaction, a key variable for understanding differences between the adoption of minimum and zero tillage. Another area that merits further research is the link between weeds and conservation tillage: several farmers reported using the technology to obtain better weed control. The long-term effects of conservation tillage should also be assessed. Extension in Regions II and III should seek to accelerate adoption of conservation tillage, particularly zero tillage. In Region I, extension should steer the change process from minimum to zero tillage.