We study the problem of construction by autonomous mobile robots focusing on the coordination strategy employed by the robots to solve a simple construction problem efficiently. In particular, we address the problem of constructing a linear 2D structure in a planar, bounded environment. A "minimalist" single-robot solution to the problem is given, as well as two multi-robot solutions, which are...

We propose an architecture based on a hybrid E2E-ERN approach to allow incremental deployment of ERN (Explicit Rate Notification) protocols in heterogeneous networks. The proposed IP-ERN architecture combines E2E (End-to-End) and ERN protocols and uses the minimum between both congestion windows to perform. Without introducing complex operation, the resulting E2E-ERN protocol provides inter and...

E-business information systems are computer applications that leverage intraand inter-firm process and systems integration. Considering the growth and strategic importance of e-business, while it is important for organizations to carefully plan for and architect ebusiness systems, none of the existing information systems planning models is adequate for the task. An e-business architecture plann...

This paper presents an architecture that supports inter-domain quality of service (QoS) across the multi-provider commercial Internet. The architecture describes the full set of functions in the management, control and data planes required for network providers to work together to deliver end-to-end QoS-based IP connectivity services. We use the concept of QoS Classes and show how these can be ...

This paper discusses two issues. The first is the need for model driven security for Service-Oriented Computing environments to address the lack of support for specifying the security requirements of Web Services during the earlier phases of the development process. The second issue revolves around supporting secure document circulation in inter-domain, decentralized environments, and specifica...

Choosing a "Common IGP" for the IP Internet (The IESG's Recommendation to the IAB) Status of this Memo This memo provides information for the Internet community. It does not specify an Internet standard. Distribution of this memo is unlimited. Special Note This document was originally prepared as an Internet Engineering Steering Group (IESG) recommendation to the Internet Architecture Board (IA...

Choosing a "Common IGP" for the IP Internet (The IESG's Recommendation to the IAB) Status of this Memo This memo provides information for the Internet community. It does not specify an Internet standard. Distribution of this memo is unlimited. Special Note This document was originally prepared as an Internet Engineering Steering Group (IESG) recommendation to the Internet Architecture Board (IA...

There are two trends in the research to develop future networks. While the first aims to introduce new technologies such as the Long Term Evolution (LTE) and WiMAX with high-speed data. The second aimed at providing clients with a ubiquitous connectivity via proposing new communication architectures to integrate different networking technologies and enabling mobile devices to switch seamlessly ...

As a solution to growing global wire delay, nonuniform cache architecture (NUCA) has already been a trend in large cache designs. The access time of NUCA is determined by the distance between the cache bank containing the required data and the processor. Thus, one of the important NUCA researches focuses on how to place data to be used into cache banks close to the processor. This paper propose...

This paper presents our findings with the Testing and Test Control Notation (TTCN-3). Using recently developed tools, we have successfully implemented a TTCN-3 test suite for the GIOP/IIOP standardized CORBA interoperability protocol. Of particular interest are TTCN-3 improvements over its predecessor Tree and Tabular Combined Notation (TTCN-2). This paper describes the GIOP test suite, its des...