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104.821  Articles
1 of 10.483 pages  |  10  records  |  more records»
The article tackles the problem of quality of service assurance in photonic networks. The idea of multi-servicephotonic network model with the coexistence of optical circuit and packet switching mechanisms and cell communication is used as a basis for ser... see more

Call admission control (CAC) is one of the basic mechanisms for ensuring high quality of service(QoS) offered to the user in Wireless Heterogeneous Networks (HetNet). Based on the available network resources,it estimates the impact of accepting or blockin... see more

This paper proposes a novel end-to-end QoS framework, called Self-Adaptive bandwidth Reconfiguration QoS framework (SAR). SAR provides end-to-end QoS guarantees on a per-flow basis through admission control and end-to-end bandwidth reservation. In order t... see more

Maximizing bandwidth utilization and providing performance guarantees, in the context of multimedia networking, are two incompatible goals. Heterogeneity of the multimedia sources calls for effective traffic control schemes to satisfy their diverse Qualit... see more

Abstract: High school is an important transitional stage in the life of the student and his family together, as it charts the course of the student's professional life when he graduates from the university or from higher education institutions.  Beca... see more

Nefrolitiasis de infección: caso clínico / Nephrolithiasis of infection: clinical caseNefrolitiasis de infección: caso clínico / Nephrolithiasis of infection: clinical caseSe presenta un caso de litiasis de infección, conocida con el nombre de cálculos de estruvita y asociado a una enfermedad metabólica subyacente y diabetes mellitus tipo 2 de reciente debut, el cual se manifestó con oliguria e infección, como resultado de una obstrucción urinaria bilateral parcial. El paciente de 48 años de edad, con antecedentes de cardiopatía isquémica, hipertensión arterial y de expulsar cálculos de riñón, consultó su caso el 21 de enero de 2009. Manejaba cifras de creatinina, glicemia y acido úrico normales anterior al ingreso y estas tuvieron un comportamiento ascendente durante la obstrucción, excepto el ácido úrico. En el diagnóstico aportaron datos de interés la ecografía renal y de próstata, la Uro-TAC y gammagrafía renal con MAG-3. El diagnóstico diferencial incluyó toda causa extrínseca e intrínseca, esta última relacionada con cálculos, coágulos o papila renal necrosada, que provocaran alteración al libre flujo urinario. Se estableció como patrones de buena evolución, la recuperación del volumen urinario, la normalización de la glucemia y creatinina, así como la permanencia del urocultivo  negativo. El manejo terapéutico motivó a la utilización de la nefrolitotomía percútanea como una de las opciones que ofrecen los procederes endorulógicos, además del control de las enfermedadesde base,lo que resultó una favorable evolución del caso.Palabras clave: LITIASIS RENAL, DIAGNÓSTICO, OBSTRUCCIÓN URETRAL / tratamiento.ABSTRACTA clinical case of lithiasis of infection is presented, known as calculi of struvite associated to an underlying metabolic disease and diabetes mellitus type-2 of recent onset, with oliguria and infection as a result of a partial bilateral urinary infection. A 48 years-old patient having medical records of ischemic heart disease, hypertension and expulsion of kidney stones attended to the office in January 21, 2009 presenting normal values of creatinine, glycemia and uric acid before the admission; these values increased during the obstruction, except the uric acid. Renal and prostate imaging, the Uro-Computerized axial tomography and renal scintigraphy with MAG-3 showed data of interest. Differential diagnosis included extrinsic and intrinsic causes, the last one related to calculi, clots or renal necrotic papilla causing disorder of the free urinary flow. Patterns of good progress were established: recovery of the urinary volume, normal levels of glycemia and creatinine and a permanent negative uroculture. Therapeutic management motivated the use of percutaneous nephrolithotomy as one of the choices for endourologic procedures, as well as the control of the underlying diseases, being favorable for a good progress of the case.Key words: NEPHROLITIASIS, DIAGNOSIS, URETHRAL OBSTRUCTION/treatment.

ABSTRACTA clinical case of lithiasis of infection is presented, known as calculi of struvite associated to an underlying metabolic disease and diabetes mellitus type-2 of recent onset, with oliguria and infection as a result of a partial bilateral urinary... see more

AbstractBackground: Healthcare-associated infections are an important cause of morbidity and mortality globally. Grey’s Hospital introduced an Infection Control Programme in August 2016, which included Best Care Always bundles for reducing the occurrence ... see more

In this paper we present admission control methods for IMS network. The task of RACS block is to accept or reject new connection into the network. The main goal of the admission control method is to ensure the Quality of Service not only fo... see more

Differentiated Services Architecture lacks control level functionalities and Bandwidth Brokers are proposed to fill that gap. In order to provide proper control level functionalities, Bandwidth Brokers need to provide services for both advance requests an... see more

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