This chapter discusses the application of methodologies to plan and design IP Backbones and 3G access networks for today's Internet world. The recent trend of the multi-frequency band operations for mobile communication systems requires increasingly bandwidth capacity in terms of core and access. The network planning task needs mathematical models to forecast network capacity that match the ser...

In this article we study the problem of designing a nation-wide communication network. Such networks usually consist of an access layer, a backbone layer, and maybe several intermediate layers. The nodes of each layer must be connected to those of the next layer in a tree-like fashion. The backbone layer has to satisfy certain survivability and routing constraints. Given the node locations, the...

in this study, an attempt has been made to expound the iranian law of intellectual property in relation to biotechnology. the most important themes studied are patents, industrial designs and trade marks. the latest relevant piece of legislation concerning the subject matters was passed in march 2008. however, the history of laws and regulations in this field goes back to early twentieth centur...

The planning of Physical Cell Identities (PCI) has a strong impact on the performance of Long Term Evolution cellular networks. Although several PCI planning schemes have been proposed in the literature, no study has quantified the performance gains obtained by these schemes. In this paper, a comprehensive performance analysis is carried out to quantify the impact of PCI planning on user qualit...

The NATO wide area network provides secure IP services to NATO commands and agencies, and offers information exchange gateways to nations and coalition operations. The IP services support the NATO-wide deployment of core automated information systems (AIS), and the placement of specific functional area services (e.g., intelligence, logistics, C2IS for the services, etc.) at commands. To maintai...

Conventional routing management approaches, which are based on given and often ”worst case” traffic matrices, are not sufficient anymore to deal with the increasing growth of the number of endpoints and diverse applications in IP networks. Traffic variations are becoming a more and more important issue, especially when making long-term network planning decisions as well as for medium-term netwo...

Today’s long haul and metro high-speed networks are mainly based on synchronous digital hierarchy (SDH) or its American equivalent synchronous optical network (SONET) and wavelength division multiplex (WDM). On the other hand, the large amount of traffic growth during the last years has been caused mainly by Internet protocol (IP) traffic. Traditionally, the IP-router based networks and the cro...

A 6-field technique using lateral beams in conformal radiotherapy was developed for patients with bilateral supraclavicular lymph node metastasis of lung cancer. The possibility of using this technique in practice was evaluated. Six fields with the same isocenter point (IP) were arranged. Two fields using anterior-posterior opposed beams involved all of the planning target volume (PTV). The nex...

BACKGROUND Sinonasal inverted papilloma (IP) is a rare benign tumor of the nasal cavities and paranasal sinuses. It is destructive or bone-remodeling, tends to recur after surgical resection, and has a significant malignant potential. The present study aimed to perform a retrospective analysis of patients with squamous cell carcinoma (SCC) arising from IP, including characteristics, survival ou...