The preference for fistulae as the hemodialysis access of choice has led to a significant number of accesses that are less than ideal for cannulation. Buttonhole cannulation is ideal for such accesses, but the technique for creation provides major challenges. In 12 patients, buttonhole tunnel tracks were created by leaving the polyurethane catheter of a Clampcath hemodialysis needle indwelling ...

In this publication we describe three techniques for endoscopic carpal tunnel release which use the palmar portal approach and the superficial plane to enable a view from above the transverse carpal ligament. These techniques prevent any iatrogenic compression of the median nerve inside the already narrow tunnel. Although the necessary instruments are inexpensive and recommended in instrumentat...

In this paper, the focus is on the design of an aggregation network for offering high-bandwidth services to fast moving users (e.g., users in trains or cars). The overall considered network architecture consists of two parts: an access network part and an aggregation network part. The users in the fast moving vehicles are connected to the access network via a wireless connection. In the aggrega...

For railway and metro operators, offering a 4G network connection is becoming more critical to keep up with passenger demands for continuous access to data and mobile services while they are on the move. As a result Radio Frequency Systems (RFS) conducted a comprehensive measurement campaign focusing on in‐tunnel LTE performance based on its Radiaflex radiating, or leaky feeder, cables to revie...

The rapid growth in mobile traffic leads to the current evolution trend of mobile networks towards a flat architecture. However, the centralized mobility management protocols (e.g. MIPv6, PMIPv6) are not optimized for the flat architecture due to their limitations e.g. complex tunnel management, scalability issue, etc. Hence, a novel mobility management has been proposed for the flat architectu...

IEEE 802.11 wireless networks have gained great popularity. However, handoff is always a critical issue in this area. In this paper, we propose a novel seamless handoff mechanism for IEEE 802.11 wireless networks which support IEEE 802.11i security standard. Our approach consists of a Dynamic Tunnel Establishing procedure and a seamless handoff mechanism. Dynamic Tunnel Establishing is for each...

Fe/MgO/Fe magnetic tunnel junctions (MTJs) have been reported to have very high tunnel magnetoresistance (TMR) ratios. In this work, we present the results of First Principle simulations of Fe/ MgO/Fe MTJs with LSDA as the exchange correlation. The I-V characteristics in the antiparallel magnetization state exhibit strong features. The bias dependence of the TMR ratio shows nearly 100% TMR rati...

This paper describes the design and the implementation of a smooth handoff scheme using IEEE802.11 triggers. The scheme is based on the idea of Post-Registration, a Layer 3 low latency handoff scheme proposed by the IETF. In order to avoid packet loss during Layer 2 handover (i.e. while the mobile node is searching for a new access point) and during the Mobile IP registration process, packets a...