totally implantable venous access devices (tivad) or implantable catheter ports are devices which can be implanted subcutaneously. they enable prolonged and repeated access to the vascular system, into the peritoneal cavity or intravertebral space. this device is particularly useful for repeated medical injection, for blood sampling or transfusion of blood and blood derivatives and for total pa...

totally implantable venous access devices (tivad) or implantable catheter ports are devices which can be implanted subcutaneously. they enable prolonged and repeated access to the vascular system, into the peritoneal cavity or intravertebral space. this device is particularly useful for repeated medical injection, for blood sampling or transfusion of blood and blood derivatives and for total pa...

IEEE 802.16e Broadband Wireless Access (BWA) technology is one of the most promising technologies for broadband access and has many applications. In order to meet the requirements of diverse multimedia services, it is necessary to provide quality of service (QoS) guarantee. Call Admission control plays an important role in QoS provisioning for wireless communication systems [1–2]. However, IEEE...