Approximately 15,000 cases of superior vena cava (SVC) obstruction are diagnosed in the United States annually. Malignancies (primarily lung cancer) are the underlying cause of 80-85% of cases, leaving 15-20% caused by various benign conditions, including sclerosing mediastinitis (the diagnosis in our case). Thrombolytic therapy and major advances in vascular techniques in recent years have imp...

We present a new R package which takes a numerical matrix format as data input, and computes clusters using a support vector clustering method (SVC). We have implemented an original 2D-grid labeling approach to speed up cluster extraction. In this sense, SVC can be seen as an efficient cluster extraction if clusters are separable in a 2-D map. Secondly we showed that this SVC approach using a J...

Traditional classification methods based on asymptotic theory for multi-spectral remote sensing images need the infinite training samples, which is impossible to be satisfied. And it has massive data information. Support vector classification(SVC) based on small samples overcomes above problems. However, the parameters determining its structure need to be optimized. For that, three optimization...

This paper investigates the effects of Static Var Compensator (SVC) on voltage stability of a power system. The functional structure for SVC built with a Thyristor Controlled Reactor (TCR) and its model are described. The model is based on representing the controller as variable impedance that changes with the firing angle of the TCR. A Power System Computer Aided Design /Electromagnetic Transi...

Support vector regression (SVR) and support vector classification (SVC) are popular learning techniques, but their use with kernels is often time consuming. Recently, linear SVC without kernels has been shown to give competitive accuracy for some applications, but enjoys much faster training/testing. However, few studies have focused on linear SVR. In this paper, we extend state-of-the-art trai...

Superior vena cava syndrome (SVCS) is characterized by gradual, insidious compression or obstruction of the superior vena cava (SVC). The most common etiology of SVCS is related to malignancy such as bronchogenic CA and lymphoma. Other cases have a variety of causes such as chronic infections and chronic inflammations that involve the mediastinum. Spontaneous SVC thrombosis is also known to occ...

In the surgical treatment of lung cancers invading the superior vena cava (SVC), primary closure is preferred for reconstruction when the resected area is small, but the repaired vessel can become constricted. A novel method for SVC repair with azygos flap, which is a longitudinally opened azygos arch, is a facile and effective treatment, and may prevent a reduction in the lumen if the area of ...

This paper presents a new approach for coordinated design of power system stabilizers (PSSs) and static VAR compensator (SVC)-based controller. For this purpose, the problem is considered as an optimization whose decision variables are controllers’ parameters. Due to nonlinearities large, interconnected systems, methods capable handling any nonlinearity networks mostly preferable. In regard, no...

The gain of SVC depends upon the type of reactive power load for optimum performance. As the load and input wind power conditions are variable, the gain setting of SVC needs to be adjusted or tuned. In this paper, an ANN based approach has been used to tune the gained parameters of the SVC controller over a wide range of load characteristics. The multi-layer feedforward ANN tool with the error ...

Case Report A 30-year-old woman was admitted with symptomatic bradycardia 2 weeks after undergoing a third ablation procedure for inappropriate sinus tachycardia (IST) in another centre. A permanent pacemaker was implanted. She re-presented 3 days later with swelling of both arms, neck, and head consistent with superior vena cava (SVC) syndrome. Venography showed bilateral brachiocephalic vein ...