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Search Results: 1 - 10 of 2014 matches for " Alvaro; "
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Buffer Management in the Sliding-Window (SW) Packet Switch for Priority Switching  [PDF]
Alvaro Munoz, Sanjeev Kumar
Int'l J. of Communications, Network and System Sciences (IJCNS) , 2014, DOI: 10.4236/ijcns.2014.77027
Abstract:

Switch and router architectures employing a shared buffer are known to provide high throughput, low delay, and high memory utilization. Superior performance of a shared-memory switch compared to switches employing other buffer strategies can be achieved by carefully implementing a buffer-management scheme. A buffer-sharing policy should allow all of the output interfaces to have fair and robust access to buffer resources. The sliding-window (SW) packet switch is a novel architecture that uses an array of parallel memory modules that are logically shared by all input and output lines to store and process data packets. The innovative aspects of the SW architecture are the approach to accomplishing parallel operation and the simplicity of the control functions. The implementation of a buffer-management scheme in a SW packet switch is dependent on how the buffer space is organized into output queues. This paper presents an efficient SW buffer-management scheme that regulates the sharing of the buffer space. We compare the proposed scheme with previous work under bursty traffic conditions. Also, we explain how the proposed buffer-management scheme can provide quality-of-service (QoS) to different traffic classes.

Moving From the Old to the New: Insecticide Research on Bed Bugs since the Resurgence
Alvaro Romero
Insects , 2011, DOI: 10.3390/insects2020210
Abstract: The scarcity of bed bugs in many countries over the last 50 years has resulted in a lack of modern research into the toxicology of this pest. Although bed bugs resurged in the late 1990s, published research related to insecticides has lagged behind and only began to appear in 2006. The difficulty in controlling bed bugs triggered the interest of both private and academic sectors to determine the value of currently available insecticides. What follows, is updated information on effectiveness of products, studies on insecticide susceptibility, identification of mechanisms of insecticide resistance and chemical strategies proposed to overcome resistance in modern bed bug populations.
Ensino público gratuito: flexibilidades e desvios
Chrispino, Alvaro;
Ensaio: Avalia??o e Políticas Públicas em Educa??o , 2005, DOI: 10.1590/S0104-40362005000200006
Abstract: this paper discusses the concepts of "constitutional principle" and "public education" regarding public educational policies in brazil. it clarifies the meaning of "public education" as stated in the basic regulation of brazilian educational public policy - ldb - lei de diretrizes e bases. the paper shows that there is a contradiction in the brazilian public universities. some of the courses provided in the area of education are being paid for by the students. this has been made possible through institutional associations with the universities' foundations. this private policy has been implemented by the same officials and professors, who are, allegedly, defendants of the constitutional principle of public education. these servants had indeed manifested in the past their opinion against the charging of students enrolled in public universities.
Los prólogos testimoniales: paratexto, otredad y colonización textual
Kaempfer,Alvaro;
Estudios filológicos , 2000, DOI: 10.4067/S0071-17132000003500013
Abstract: this paper examines the editorial construction of the interviewee within the prologues of three latin american contemporary testimonies. gerard genett?s notion of the paratext makes it possible to consider the formation of the other within a contemporary narrative of national legitimacy. the prologues in question are miguel barnet?s in biografía de un cimarrón (1967), berta ribeiro?s in antes o mundo n?o existía (1980) and elizabeth burgos?s in me llamo rigoberta menchú y así me nació la conciencia (1983). these prologues are analyzed as cultural and textual strategies of objectification, subordination and inclusion of the subaltern within national and historical narratives that materialize them.
LAS EMPRESAS EDITORIALES DE JOSé ABELARDO Nú?EZ EN ALEMANIA, 1881-1905
Ceballos,Alvaro;
Historia (Santiago) , 2008, DOI: 10.4067/S0717-71942008000100002
Abstract: between 1881 and 1905 the germán publishing company f. a. brockhaus, issued one million textbooks for chilean educational institutions under the direction of josé abelardo nú?ez. what started as a way of funding his own research-stay in europe, quickly became a tremendous enterprise of cultural nationalization. profit-making, patriotism, nationalism and international capitalism merged to make possible these germán editions. this paper reconstructs at length the origin and motivations behind the publication of these books using previously unpublished correspondence and archival documentation.
Uma teoria marxista do político? O debate Bobbio trent'anni doppo
Bianchi, Alvaro;
Lua Nova: Revista de Cultura e Política , 2007, DOI: 10.1590/S0102-64452007000100004
Abstract: the debate opened thirty years ago by norberto bobbio with a series of articles published by the mondoperaio magazine raised two challenges to the marxist theory of politics: 1)is there a marxist theory of politics? 2) which are the alternatives to representative democracy? on the one hand, the debate has revealed a high level of consensus on the values and rules of liberal democracy and, on the other hand, the absence among the participants of the debate of a political theory antagonistic to the constitutional-liberal one. this article deals with this debate and develops the hypothesis that only as a negative political theory marxism could be a critique of politics, being consolidated as the theoretical program for the overcoming of the political theory of its age and as the practical program of overcoming politics proper.
Chagas disease: current epidemiological trends after the interruption of vectorial and transfusional transmission in the Southern Cone countries
Moncayo, Alvaro;
Memórias do Instituto Oswaldo Cruz , 2003, DOI: 10.1590/S0074-02762003000500001
Abstract: chagas disease, named after carlos chagas who first described it in 1909, exists only on the american continent. it is caused by a parasite, trypanosoma cruzi, transmitted to humans by blood-sucking triatomine bugs and by blood transfusion. chagas disease has two successive phases, acute and chronic. the acute phase lasts 6 to 8 weeks. after several years of starting the chronic phase, 20% to 35% of the infected individuals, depending on the geographical area will develop irreversible lesions of the autonomous nervous system in the heart, esophagus, colon and the peripheral nervous system. data on the prevalence and distribution of chagas disease improved in quality during the 1980's as a result of the demographically representative cross-sectional studies carried out in countries where accurate information was not available. a group of experts met in brasília in 1979 and devised standard protocols to carry out countrywide prevalence studies on human t. cruzi infection and triatomine house infestation. thanks to a coordinated multi-country program in the southern cone countries the transmission of chagas disease by vectors and by blood transfusion has been interrupted in uruguay in1997, in chile in 1999, and in 8 of the 12 endemic states of brazil in 2000 and so the incidence of new infections by t. cruzi in the whole continent has decreased by 70%. similar control multi-country initiatives have been launched in the andean countries and in central america and rapid progress has been recorded to ensure the interruption of the transmission of chagas disease by 2005 as requested by a resolution of the world health assembly approved in 1998. the cost-benefit analysis of the investments of the vector control program in brazil indicate that there are savings of us$17 in medical care and disabilities for each dollar spent on prevention, showing that the program is a health investment with good return. since the inception in 1979 of the steering committee on chagas disease
La sutura legible y subalterna de la ficción histórica de la chilenidad en Durante la Reconquista (1897) de Alberto Blest Gana
Kaempfer,Alvaro ?;
Atenea (Concepción) , 2006, DOI: 10.4067/S0718-04622006000200009
Abstract: if the reconquest period has been seen by chilean historiography as a foundational moment for a political national identity, blest gana's narrative articulates its construction over an image of the popular that lends cohesion to this hegemonic vision. this article explores the legibility of the subaltern through an interpretation or invention of a popular figure around which blest gana organizes an account of the reconquest in his historical fiction
Reacciones adversas por antibióticos en una unidad de cuidado intensivo pediátrico y neonatal de Bogotá
Vallejos,Alvaro;
Biomédica , 2007,
Abstract: introduction. critical care patients have a high probability of presenting adverse drugs reactions because the polytherapy that they receive usually include schemes with two or more antibiotics. most antibiotics have high toxicity risk, which can be potentialized when being associated with other drugs. objective. adverse reactions were detected and described in patients treated with antibiotics in a pediatric and neonatal intensive care. materials and methods. a follow up, descriptive and observational study of a cohort was made without control group. a daily follow-up was administered for a three month period for each patient. causality was evaluated on the basis of the naranjo scale. results. eighty-five patients were included in the study, 36.5% from the neonatal intensive care unit and 63.5% from the pediatric clinic. of twenty-seven antimicrobial medications administered, 97 adverse reactions were detected for 15 of these, in 37 patients (20 newborn and 17 older children). they were classified as mild (65%), moderate (35%) and serious (0). according to scale of naranjo, 68% were possible, 32% probable, and defined, none. based on laboratory test results, renal toxicity was detected in 38.1%, hematotoxicity in 24.7%,electrolytic abnormalities in 21.6% and hepatotoxicity in 15.5%. the distribution of adverse antibiotic reactions was as follows: gentamycine 20.6%, vancomycin 17.5%, amikacine 16.5%, ceftriaxone 15.5% and piperaciline tazobactam 13.4%. conclusions. the proportion of adverse reactions was of 43.7%. 55.6% of antibiotics produced adverse reactions. a program of institutional pharmacovigilance coordinated by a medical pharmacologist or pharmaceutical chemist was recommended by these data.
Escepticemia: una condición deseable
Bustos,Alvaro;
Colombia Médica , 2005,
Abstract: in an essay manner, the author warns about the numerous risks that entail publishing medical articles and gives example of how clinical investigation turns away from its main targets if not developed under the watchful eyes of skepticism which is a crucial condition in order to avoid mistakes and come closer to the truth as possible, even though this legitimacy is temporary. the article argues with authoritarianism in medicine, dehumanized medical practices and the short sighted practice of taking principles from medicine based on evidence.
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