590 research outputs found
Erratum to “COVID-19 in children: what did we learn from the first waveˮ [Paediatr Child Health 30 (2020) 438–443/1496] (Paediatrics and Child Health (2020) 30(12) (438–443), (S1751722220301591), (10.1016/j.paed.2020.09.005))
No full text\ua9 2021 Elsevier LtdThe publisher regrets that there is an error in author name – “Carlos R. Rodriguez-Martinez” should be changed to Carlos E. Rodriguez-Martinez. The publisher would like to apologise for any inconvenience caused
Correction to: NG2 antigen is involved in leukemia invasiveness and central nervous system infiltration in MLL-rearranged infant B-ALL (Leukemia, (2018), 32, 3, (633-644), 10.1038/leu.2017.294)
No full textThe original version of this Article contained an error in the spelling of the author Juan Carlos Rodriguez-Manzaneque, which was incorrectly given as J Carlos Rodríguez-Manzaneque. This has now been corrected in both the PDF and HTML versions of the Article
Roberto Pineda Duque: un músico incomprendido, de Luis Carlos Rodríguez Álvarez
No full texthis review presents the book entitled Roberto Pineda Duque: a misunderstood musician, written by Luis Carlos Rodriguez Alvarez. The author presents a discussion of the most outstanding aspects of the research about this Colombian composer (Antioquia 1910 - Bogota 1977)Esta reseña presenta una revisión del texto Roberto Pineda Duque: un músico incomprendido, escrito por Luis Carlos Rodríguez Alvarez. En esta, la autora de la reseña presenta una discusión de los aspectos más sobresalientes de este trabajo de investigación sobre este compositor moderno colombiano nacido en Antioquia en 1910 y fallecido en Bogotá en 1977
Correction: NG2 antigen is involved in leukemia invasiveness and central nervous system infiltration in MLL-rearranged infant B-ALL.
No full textThe original version of this Article contained an error in the spelling of the author Juan Carlos Rodriguez-Manzaneque, which was incorrectly given as J Carlos Rodríguez-Manzaneque. This has now been corrected in both the PDF and HTML versions of the Article
Contribución al modelado y diseño de moduladores sigma-delta en tiempo continuo de baja relación de sobremuestreo y bajo consumo de potencia
No full textLos moduladores Sigma-Delta de tiempo continuo constituyen una técnica de conversión de señal analógica a señal digital que resulta ser una alternativa interesante para aplicaciones de alta velocidad. Comparado con otras alternativas, son especialmente insensibles a las imperfecciones del circuito y a las tolerancias de los componentes, pero tradicionalmente se han diseñado para aplicaciones de baja-media velocidad.
Esta tesis aporta contribuciones al análisis y modelado de moduladores Sigma-Delta en tiempo continuo y de alta velocidad. Se han analizado y modelado, entre otros, los dos efectos que limitan su resolución y estabilidad, a saber, el retardo de bucle en exceso y la sensibilidad del sistema a la incertidumbre del instante de muestreo.
Los resultados del análisis así como los modelos obtenidos se han usado para proponer una metodología de diseño, novel y estructurada, que es válida para moduladores Sigma-delta en tiempo continuo de alta velocidad o baja relación de sobremuestreo. Para facilitar la evaluación de esta metodología se ha desarrollado una herramienta software que implementa las fases centrales de diseño.
Finalmente, se ha validado la metodología de diseño propuesta mediante el desarrollo de un circuito integrado CMOS de 0.13 micras que implementa un modulador Sigma-Delta en tiempo continuo de 30 Megabits por segundo y 11 bits de rango dinámico.________________________________________________
Abstract Continuous-Time Sigma-Delta modulators are often employed as analog-to-digital converters. These modulators are an attractive approach to implement high-speed converters in VLSI systems because they have low sensitivity to circuit imperfections compared to other solutions. This work is a contribution to the analysis, modelling and design of high-speed Continuous-Time Sigma-Delta modulators. The resolution and the stability of these modulators are limited by two main factors, excess-loop delay and sampling uncertainty. Both factors, among others, have been carefully analysed and modelled. A new design methodology is also proposed. It can be used to get an optimum high-speed Continuous-Time Sigma-Delta modulator in terms of dynamic range, stability and sensitivity to sampling uncertainty. Based on the proposed design methodology, a software tool that covers the main steps has been developed. The methodology has been proved by using the tool in designing a 30 Megabits-per-second Continuous-Time Sigma-Delta modulator with 11-bits of dynamic range. The modulator has been integrated in a 0.13-µm CMOS technology and it has a measured peak SNR of 62.5dB
Is the debt crisis history? Recent private capital inflows to developing countries
No full textThe outlook for economic development for an important group of middle-income countries has again been buoyed by substantial private capital inflows in the 1990s. As in the 1970s, this development has been met with cautious optimism. It is generally accepted that these countries need resource transfers from the rest of the world to support capital formation and growth. It is also generally accepted that these private capital flows make the allocation of resources more efficient. But there is concern that a rapid reversal of market sentiment could impose considerable adjustment costs on these same economies. The authors try to quantify what many consider to be the main reasons debtor countries have access to capital markets again: (a) Domestic policy reform in the debtor countries. (b) Debt and debt service reduction, usually associated with Brady Plan restructuring. (c) Changes in the external market, such as changes in interest rates in industrial countries. They argue that a useful barometer for access to new loans is the market value of existing sovereign debt. It follows that a quantitative analysis of the factors that caused the market value of sovereign debts to rise rapidly after 1989 would also improve understanding of the forces behind the renewed access to international capital. Empirical historical evidence suggests that fiscal reform, privatization, and debt reduction are useful in explaining relative improvements in the standing of debtor countries in international credit markets. Debtor countries with strong reform programs, in other words, are better prepared to withstand deterioration in the external environment. But the reduction in dollar interest rates since 1989 appears to be the chief factor in the debtor countries'renewed access to international loans. The authors estimate the effect of increases in dollar interest rates and conclude that the typical debtor country remains vulnerable to increases in interest rates that are well within the range of recent experience.Economic Theory&Research,Environmental Economics&Policies,Banks&Banking Reform,Strategic Debt Management,Financial Intermediation
El ser racializado: el concepto de raza en las experiencias autobiográficas de Richard Rodriguez y Kevin R. Johnson
No full textabstract: Race is a complex system founded on social ideologies that categorize and evaluate human beings into different groups based on their visible characteristics (e.g., skin color) that, according to this notion of race, indicate a person's personal traits (e.g., intelligence). The concept of race has been an integral part of American society since the ratification of the United States Constitution in the late 18th century. Early on, the practice of race within American society established one particular group as the norm: the White Anglo-Saxon Protestant. By the late 19th and early 20th centuries, the distinctions among racial groups essentially came down to "white" and "nonwhite." Consequently, certain social inequalities were bestowed upon those groups that did not fit the model of the dominant "white" group. Autobiographies, especially those from marginalized groups, can serve as an important source of these social disparities since the author is able to recount their own social experiences vis-à-vis racial practices within society. With this in mind, this thesis analyses the concept of race in relation to the personal experiences of two authors through their respective autobiographies: Hunger of Memory: The Education of Richard Rodriguez (1982) by Richard Rodriguez and How Did You Get to Be Mexican?: A White/Brown Man's Search for Identity (1999) by Kevin R. Johnson. The critical work of Paula M. L. Moya, Linda Martín Alcoff, Hazel Rose Markus, George M. Fredrickson, Genaro M. Padilla and others are used as the theoretical framework in the literary analysis of these authors' texts. In summary, the results of this study demonstrate the concept of race as a salient aspect in regards to the ideological formation of each respective author.Dissertation/ThesisM.A. Spanish 201
Prevalencia de seropositividad para anticuerpos contra el virus de la inmunodeficiencia adquirida en pacientes masculino de 18 a 44 anos de edad que acudieron al servicio de urgencias del Hospital Psiquiatrico para agudos "Fray Bernardino Alvarez" durante el lapso comprendido del jueves 20 de octubre de 1988 al miercoles 8 de febrero de 1989
No full textEvaluacion de los tatuajes como posibles factores de riesgo para adquirir VIH en personas que asisten UMAI de los Reyes La Paz Estado de Mexico
No full textVilaQuAD: an extractive QA dataset from Catalan newswire
No full textIf you use this resource in your work, please cite our latest paper:
@inproceedings{armengol-estape-etal-2021-multilingual,
title = "Are Multilingual Models the Best Choice for Moderately Under-resourced Languages? {A} Comprehensive Assessment for {C}atalan",
author = "Armengol-Estap{\'e}, Jordi and
Carrino, Casimiro Pio and
Rodriguez-Penagos, Carlos and
de Gibert Bonet, Ona and
Armentano-Oller, Carme and
Gonzalez-Agirre, Aitor and
Melero, Maite and
Villegas, Marta",
booktitle = "Findings of the Association for Computational Linguistics: ACL-IJCNLP 2021",
month = aug,
year = "2021",
address = "Online",
publisher = "Association for Computational Linguistics",
url = "https://aclanthology.org/2021.findings-acl.437",
doi = "10.18653/v1/2021.findings-acl.437",
pages = "4933--4946",
}
Dataset de QA extractiu amb 6282 parells de pregunta-resposta desenvolupats a partir de paràgrafs del diari en línia Vilaweb (https://www.vilaweb.cat) usats sota llicència CC-BY-NC-ND 4.0.
This dataset contains 2095 of Catalan language news articles along with 1 to 5 questions referring to each fragment (or context).
VilaQuad articles are extracted from the daily Vilaweb (www.vilaweb.cat) and used under CC-by-nc-sa-nd (https://creativecommons.org/licenses/by-nc-nd/3.0/deed.ca) licence.
This dataset can be used to build extractive-QA and Language Models.
Funded by the Generalitat de Catalunya, Departament de Polítiques Digitals i Administració Pública (AINA), MT4ALL and Plan de Impulso de las Tecnologías del Lenguaje (Plan TL)
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