Strain-induced precipitation (SIP) behaviors of 7Mo super-austenitic stainless steel (SASS) under various deformation conditions were studied by stress relaxation tests. The research demonstrates that sigma phases are the primary SIP SASS. Generally, is mainly distributed in granular shape at boundaries deformed grains or recrystallized grains, as well around microstructure, such twin layers/ma...

With an ever increasing penetration of IP technologies and the tremendous growth in wireless data traffic, the wireless industry is evolving the mobile core networks towards IP technology. The third Generation Partnership Project (3GPP) has specified an IP multimedia sub-system (IMS) in UMTS Release 5/6, which is adjunct to the UMTS packet-switched (PS) GPRS core network. This IP-based network ...

The case study on the Slum Improvement Project (SIP) in Dhaka Metropolitan City, by the Local Government Engineering Department (as of 1991), was undertaken to highlight some of the innovative socio-economic programmes implemented for urban slum dwellers, as well as some lessons learned from them. The overall achievement of the SIP is satisfactory, as the model made a breakthrough in providing ...

An application called the Spice Internet Package (SIP) has been developed for use through the Internet and intranet networks. The SIP provides an interface that is operating independent, which allows Spice simulation and analysis to be performed from any computer that has a web browser on the Internet or intranet. One can access the Spice Internet Package and try some examples with the password...

Modern all-IP networks, which transfer telephony, multimedia and data use mainly as signalling protocol the Session Initiation Protocol (SIP). These networks are exposed to various types of attacks, and among them, a DDoS attack can result particularly dangerous, because it can be directed against the SIP signalling system. A shield can be implemented only after the detection of an attack, henc...

The mobility management issue in IP access networks can be dealt with from various perspectives. A possible approach includes the use of the Session Initiation Protocol (SIP) and its associate entities for mobility signaling. Following this approach, existing SIP functionality in a network can be reused for mobility management purposes, providing efficient utilization of resources. In this pape...

IP networks have been becoming more popular communication infrastructures due to the lower operational costs in recent years. Mainly, usage of IP networks in voice services, which is denominated by VoIP (Voice over IP), has made difference in telephony networks not only the way of the people’s communications, but also telecommunication companies’ and operators’ solutions. In this scope, IMS (IP...

The Session Initiation Protocol (SIP) was developed to control multi-media sessions on the Internet. Shortly after its debut as a standard in 1999, SIP was adopted by the 3rd Generation Partnership Project (3GPP) as the preferred signaling protocol for the Internet Multimedia Subsystem (IMS). This adoption provided a boost to the nascent protocol as traditional telecommunication services were i...

With developments in voice over IP (VoIP), IP-based wireless data networks and their application services have received increased attention. While multimedia applications of mobile nodes are served by Session Initiation Protocol (SIP) as a signaling protocol, the mobility of mobile nodes may be supported via Mobile IP protocol. For a mobile node that uses both Mobile IP and SIP, there is a seve...

This document defines a new header for use with Session Initiation Protocol (SIP) multi-party applications and call control. The Replaces header is used to logically replace an existing SIP dialog with a new SIP dialog. This primitive can be used to enable a variety of features, for example: "Attended Transfer" and "Call Pickup". Note that the definition of these example features is nonnormative.