CAS used in IPTV or DTV has an environment of sending single type of contents through single streaming. But it can be improved to support users’ various video applications through single streaming by combining with SVC. For such an environment, efficiency should be firstly considered, and hierarchical key management methods for billing policy by service levels should be applied. This study aims...

In this paper we deal with the problem of assuring acceptable grade of service and at the same time increasing a total network throughput. This is possible by combining two usually separate switch functions: traffic shaping (policing) and packet scheduling. We have selected a simple packet switch structure with single FIFO (first-in-first-out) queue per input port. Input queuing has an advantag...

OBJECTIVE To establish the upper limits for changes in FEV1, slow vital capacity (SVC), FVC, and inspiratory capacity (IC) after placebo administration in patients with airflow obstruction. METHODS One hundred and two adults with airflow obstruction (FEV1 = 62 ± 19% of predicted) were included in the study. All of the participants performed SVC and FVC maneuvers before and after the administr...

INTRODUCTION Decreases in oxygen saturation (SO2) and lactate concentration [Lac] from superior vena cava (SVC) to pulmonary artery have been reported. These gradients (Delta SO2 and Delta[Lac]) are probably created by diluting SVC blood with blood of lower SO2 and [Lac]. We tested the hypothesis that Delta SO2 and Delta[Lac] result from mixing SVC and inferior vena cava (IVC) blood streams. ...

The determination of CD4 cells is of crucial clinical importance for patients with AIDS. However, the high costs involved represent limitations for CD4 cell counting in developing countries. In order to provide an affordable technique, we introduced a simplified volumetric counting (SVC) technique without sample manipulations and investigated it in a multicentre study. Blood samples from 434 he...

AIMS The benefits of superior vena cava (SVC) resection for lung cancer remain controversial. Data obtained in four international centers were analyzed in order to identify prognostic factors and thus guide in future patient selection. MATERIALS AND METHODS Retrospective study. Prognostic factors were examined by logistic regression for postoperative morbidity/mortality using the Kaplan-Meier...

INTRODUCTION Induction of general anesthesia in patients with superior vena cava (SVC) syndrome may cause airway obstruction and cardiovascular collapse. CASE PRESENTATION Herein, we introduced a patient with the diagnosis of dissecting aneurysm of the ascending aorta who was candidate for emergency surgery. He also had symptoms of SVC syndrome. To maintain airway patency during anesthetic ma...

The flow patterns emerging at a catheter migrating close to the simulated superior vena cava (SVC) wall has been investigated for jet to cross stream velocity ratios of 3 and 6 experimentally. As the catheter moves close to the SVC wall, changes in the jet behavior can potentially cause health problems to the patient. In this study, time-averaged velocity, vorticity, and Reynolds stress correla...

This paper presents graphic-based simulation and optimal PI controller design of a static var compensator (SVC) using MATLAB’s SIMULINK. Utilization of MATLAB software simplifies problem solving complexity and also reduces working time. In this paper, an optimal PI controller design using genetic algorithms for the SVC was demonstrated. From which satisfactory controller design results, tests a...