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Search Results: 1 - 10 of 192065 matches for " Pabla; Juarez D "
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Valdés R,Enrique; Pastene S,Carolina; Morales P,Alejandro; Gutiérrez R,Bárbara; Canales P,Ana; Martínez O,Pabla; Juarez D,Guido; Caballero T,Rafael;
Revista chilena de obstetricia y ginecología , 2004, DOI: 10.4067/S0717-75262004000200008
Abstract: streptococcus agalactiae is the main bacterial agent in neonatal sepsis. to avoid the perinatal infection, a vaginal and anal culture in the third trimester is recommended and then treated with antibiotics during labour. the aim of the study was to study the prevalence of streptococcus agalactiae in pregnant patients in university of chile hospital in santiago. the study period was from march 1 to may 31 of 2003. vaginal and anal samples were taken at 35-37 weeks using selective medium (todd hewitt broth). a total of 185 patients were studied and the prevalence of streptococcus was 14,0%
In-Network Redundancy Generation for Opportunistic Speedup of Backup
Lluis Pamies-Juarez,Anwitaman Datta,Frédérique Oggier
Mathematics , 2011, DOI: 10.1016/j.future.2013.02.009
Abstract: Erasure coding is a storage-efficient alternative to replication for achieving reliable data backup in distributed storage systems. During the storage process, traditional erasure codes require a unique source node to create and upload all the redundant data to the different storage nodes. However, such a source node may have limited communication and computation capabilities, which constrain the storage process throughput. Moreover, the source node and the different storage nodes might not be able to send and receive data simultaneously -- e.g., nodes might be busy in a datacenter setting, or simply be offline in a peer-to-peer setting -- which can further threaten the efficacy of the overall storage process. In this paper we propose an "in-network" redundancy generation process which distributes the data insertion load among the source and storage nodes by allowing the storage nodes to generate new redundant data by exchanging partial information among themselves, improving the throughput of the storage process. The process is carried out asynchronously, utilizing spare bandwidth and computing resources from the storage nodes. The proposed approach leverages on the local repairability property of newly proposed erasure codes tailor made for the needs of distributed storage systems. We analytically show that the performance of this technique relies on an efficient usage of the spare node resources, and we derive a set of scheduling algorithms to maximize the same. We experimentally show, using availability traces from real peer-to-peer applications as well as Google data center availability and workload traces, that our algorithms can, depending on the environment characteristics, increase the throughput of the storage process significantly (up to 90% in data centers, and 60% in peer-to-peer settings) with respect to the classical naive data insertion approach.
An Empirical Study of the Repair Performance of Novel Coding Schemes for Networked Distributed Storage Systems
Lluis Pamies-Juarez,Frédérique Oggier,Anwitaman Datta
Computer Science , 2012,
Abstract: Erasure coding techniques are getting integrated in networked distributed storage systems as a way to provide fault-tolerance at the cost of less storage overhead than traditional replication. Redundancy is maintained over time through repair mechanisms, which may entail large network resource overheads. In recent years, several novel codes tailor-made for distributed storage have been proposed to optimize storage overhead and repair, such as Regenerating Codes that minimize the per repair traffic, or Self-Repairing Codes which minimize the number of nodes contacted per repair. Existing studies of these coding techniques are however predominantly theoretical, under the simplifying assumption that only one object is stored. They ignore many practical issues that real systems must address, such as data placement, de/correlation of multiple stored objects, or the competition for limited network resources when multiple objects are repaired simultaneously. This paper empirically studies the repair performance of these novel storage centric codes with respect to classical erasure codes by simulating realistic scenarios and exploring the interplay of code parameters, failure characteristics and data placement with respect to the trade-offs of bandwidth usage and speed of repairs.
Impacto del plan AUGE en el tratamiento de pacientes con infarto agudo al miocardio con supradesnivel ST, en hospitales chilenos
Nazzal N,Carolina; Campos T,Pabla; Corbalán H,Ramón; Lanas Z,Fernando; Bartolucci J,Jorge; Sanhueza C,Patricio; Cavada Ch,Gabriel; Prieto D,Juan Carlos;
Revista médica de Chile , 2008, DOI: 10.4067/S0034-98872008001000001
Abstract: background: in 2005 the chilean government started a health care reform (auge) that guarantees medical treatment for acute myocardial infarction. aim: to quantify the impact ofauge on the management and inhospital mortality of stemi in a group of chilean hospitals. material and methods: three thousand five hundred and forty six patients with stemi from 10 hospitals that perform thrombolysis as the main reperfusion therapy were analyzed. we compared demographic and clinical characteristics, hospital treatments and revascularization proceduresin two periods: before (2,623 patients) and after auge implementation (906 patients). logistic regression was used to assess inhospital mortality according to auge in the entire sample and stratified by risk groups. results: we found no differences in demographic and clinical characteristics between the two groups. during auge threre was a significant increase in the use of thrombolysis (50% to 60.5%), which was associated to an increase of hypotension from 29% to 35% (p <0.02) and minor bleedings, from 1.6% to 3.4% (p <0.001). after a uge there was a significant increase in the use ofbeta blockers (65% to 75%), angiotensin converting enzyme inhibitors (70% to 76%), statins (48% to 58%), and aspirin (96% to 97.5%) (p <0.05). global inhospital mortality decreased from 12.0% to 8.6% (p <0.003) and from 10.6% to 6.8% (p <0.005) in patients treated with thrombolytics. the adjusted odds ratio for inhospital mortality comparing after and before auge, was 0.64 (ic 95%, 0,47-0.86). conclusions: the implementation ofauge has been successful in reducing inhospital mortality of stemi this has been achieved through a better use of evidence based medicine and reperfusion strategies .
Síndrome de Poems: Caso clínico
Horta H,Pabla; Quevedo L,Iván;
Revista médica de Chile , 2004, DOI: 10.4067/S0034-98872004000400011
Abstract: poems syndrome (polyneuropathy, organomegaly, endocrine abnormality, m-protein, plasma cell dyscrasia, and skin lesions) is a plasma cell dyscrasia whose pathogenesis is unknown. we report a 60 years old woman that presented a tetraparesis caused by a sensitive motor polyneuropathy. the subsequent work up revealed an iga type monoclonal gammopathy, hepatomegaly, hyperestrogenism, primary adrenal failure, hypothyroidism, hyperpigmentation and erythematous lesions in the skin and ankle edema. the patient is being treated with prednisone 0.5 mg/kg and levothyroxine 100 μg/day, with partial remission of her symptoms (rev méd chile 2004; 132: 485-8)
Síndrome de Poems: Caso clínico Poems syndrome: Report of one case
Pabla Horta H,Iván Quevedo L
Revista médica de Chile , 2004,
Abstract: Poems syndrome (polyneuropathy, organomegaly, endocrine abnormality, M-protein, plasma cell dyscrasia, and skin lesions) is a plasma cell dyscrasia whose pathogenesis is unknown. We report a 60 years old woman that presented a tetraparesis caused by a sensitive motor polyneuropathy. The subsequent work up revealed an IgA type monoclonal gammopathy, hepatomegaly, hyperestrogenism, primary adrenal failure, hypothyroidism, hyperpigmentation and erythematous lesions in the skin and ankle edema. The patient is being treated with prednisone 0.5 mg/kg and levothyroxine 100 μg/day, with partial remission of her symptoms (Rev Méd Chile 2004; 132: 485-8)
Neurodevelopment in HIV Infected Children at Roosevelt’s Hospital Infectious Diseases Clinic, in Guatemala  [PDF]
Andrea Palma, Julio W. Juarez
World Journal of AIDS (WJA) , 2018, DOI: 10.4236/wja.2018.81001
Background: The infection with HIV has been related to neurological disorders that are very frequent, since this virus crosses the blood-brain barrier and enters the CNS, thus affecting its neurological development. About 50% - 90% of infected patients, with an average age of onset from 19 months to 3 years old may present some types of neurological alteration during the course of the disease. Currently in Guatemala, there are no researches that show changes in the neurodevelopment of patients infected with HIV. Objective: To identify neurodevelopment of pediatric patients infected with the HIV, taking into consideration clinical and epidemiological characteristics. Materials and Methods: Fifty-six patients, who were under 8 years and 6 months of age, that met the inclusion criteria (confirmed diagnosis of HIV), were evaluated through neurodevelopment test (Bayley Test and McCarthy’s Scale) during the months of May and June of 2016. Results: Within the neurodevelopment evaluation, it was discovered that between 36% and 54% of evaluated patients that were 3 years and 6 months to 8 years and 6 months old, presented alterations in more than one area of neurodevelopment, correlating it with studies performed in other countries with 30% - 70% of neurological affection. Conclusions-All infected patients have alterations in more than one area of neurodevelopment. The most affected areas of neurodevelopment were the verbal, numerical and cognitive areas.
Locally Repairable Codes with Multiple Repair Alternatives
Lluis Pamies-Juarez,Henk D. L. Hollmann,Frédérique Oggier
Computer Science , 2013,
Abstract: Distributed storage systems need to store data redundantly in order to provide some fault-tolerance and guarantee system reliability. Different coding techniques have been proposed to provide the required redundancy more efficiently than traditional replication schemes. However, compared to replication, coding techniques are less efficient for repairing lost redundancy, as they require retrieval of larger amounts of data from larger subsets of storage nodes. To mitigate these problems, several recent works have presented locally repairable codes designed to minimize the repair traffic and the number of nodes involved per repair. Unfortunately, existing methods often lead to codes where there is only one subset of nodes able to repair a piece of lost data, limiting the local repairability to the availability of the nodes in this subset. In this paper, we present a new family of locally repairable codes that allows different trade-offs between the number of contacted nodes per repair, and the number of different subsets of nodes that enable this repair. We show that slightly increasing the number of contacted nodes per repair allows to have repair alternatives, which in turn increases the probability of being able to perform efficient repairs. Finally, we present pg-BLRC, an explicit construction of locally repairable codes with multiple repair alternatives, constructed from partial geometries, in particular from Generalized Quadrangles. We show how these codes can achieve practical lengths and high rates, while requiring a small number of nodes per repair, and providing multiple repair alternatives.
A escola "faz" as juventudes? Reflex?es em torno da socializa??o juvenil
Dayrell, Juarez;
Educa??o & Sociedade , 2007, DOI: 10.1590/S0101-73302007000300022
Abstract: this text discusses the relationships between schooling and youth and the place of schools in the socialization of contemporary youth, especially in what regards young people from lower classes. it considers the hypothesis that the challenges and tensions between schooling and youth are the results of deep changes that have taken place in western societies and have interfered both in the social production of individuals and in their times and spaces, affecting the institutions and the socialization process of the new generations. this paper thus discusses the characteristics of young students who study public high schools and provides evidence for the existence of a new youth condition in contemporary brazil. it points out the challenges and concerns of schooling and youth, emphasizing the transformations within schooling institutions and the tensions and constraints in the difficult task of becoming students. the author finally concludes that schools have become less unequal but continue to be unfair.
O rap e o funk na socializa??o da juventude
Dayrell, Juarez;
Educa??o e Pesquisa , 2002, DOI: 10.1590/S1517-97022002000100009
Abstract: the text proposes to discuss the importance of youngster music bands in the socialization processes experienced by poor youngsters from the outskirts of belo horizonte, problematizing the weight and meaning of belonging to a music band in the life of each one of them. the article focuses on the members of three rap bands and three funk duos, attempting to analyze their cultural experiences and the meaning that those practices acquire within the social processes that constitute them as subjects. that entails understanding how they elaborate on their experiences related with their music style and the meanings their attribute to it in their social context of poor youngsters. the discussion points out that young rappers and funkers find few spaces in the institutions of the adult world where they can build up references and values through which they could constitute themselves as subjects. the rap and funk styles take on a central place in the lives of these youngsters by means of the forms of sociability that those styles build, the music they create, and the cultural events they promote. those styles have made possible to those youngsters practices, relations, and symbols through which they create their own spaces, representing a reference in the elaboration and experience of their situation as youngsters, apart from allowing the construction of positive identities and self-esteem.
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