We investigate basic algorithmic and structural properties of a formal model of layered telecommunication networks. The network model includes ports, which are access points to data streams; links, which transmit data streams; and adapters, which convert data streams from one layer, i.e. encoding, to another. Two ports communicate if there is a path from one to the other in which every adaptati...

conclusion our data suggest that catheter malfunctions of ticvps are more common in females than males. the incidence of ticvp malfunctions does not differ between the two devices (celsite® vs. humanport®). background malfunctions of totally implantable central venous ports (ticvps) have become a problem, as the usage of ticvps has increased enormously. objectives this study evaluated factors r...

Many methods have been adopted by shipping operators to evaluate, analyze and select ports of calls. Majority of these methods are generally based on evaluating different port performance criteria involved. The ports performance criteria are interrelated and are of a complex nature. Comparison of ports by different evaluation methods provides a basis for implementing operating strategies for...

Over a little more than the past decade, governments internationally have devolved responsibility for ports from the public sector to the private sector. The outcome of port devolution depends on the governance systems put in place. This paper adds to the growing body of literature on what constitutes good governance in the transport sector. First, some background on devolution as an alternativ...

Ports have increasingly been addressing sustainability issues; however, gender equality has a low priority in such efforts. This paper is aimed at providing insights into how ports to contribute sustainability. Twelve semi-structured interviews were conducted with top-level port managers from six European countries. The responses the interviewees analysed using Grounded Theory’s constant compar...

This paper addresses the impact of transport infrastructure projects of manufacturing employment in Thai regions. After a theoretical review we consider the impact of various transport modes: road, rail and ports. We find that roads and ports have a positive impact on industrial location, although the size of the impact is modest. Labor appears to be a more important location factor in Thailand...

A general design procedure of decoupling networks, between two coupled antennas, is proposed using a single transmission line connected between the input ports of the antennas at a specified distance. A rigorous analysis for the decoupling circuit is introduced considering the return loss of the antennas into calculations. Furthermore, using numerical optimization, enhancement of decoupling bet...

BACKGROUND Video assisted thoracoscopic resection of an esophageal leiomyoma offers distinct advantages over an open approach. Many papers have described various techniques of thoracoscopic resection. CASE PRESENTATION We describe a 32-year old man who presented with intermittent dysphagia. Imaging studies showed a large esophageal leiomyoma. He underwent thoracoscopic enucleation using a thr...

One of the most important subjects in relation with the functioning of the ports is the conversion of the aged & unused port’s spaces. Entire societies can be developed and obtain the progress that they need when the ports stop giving the back to the city and develop great areas, in the majority of the cases abandoned, converting them in new spaces for the citizen’s enjoyment & tourist attracti...