Sensor network computing can be characterized as resourceconstrained distributed computing using unreliable, low bandwidth communication. This combination of characteristics poses significant software development and maintenance challenges. Effective and efficient debugging tools for sensor network are thus critical. Extant development tools, such as TOSSIM, EmStar, ATEMU and Avrora, provide us...

There is a growing number of DDoS attacks on the Internet, resulting in significant impact on users. Network operators today have little access to scientific means to effectively deal with these attacks in real time. The need of the hour is a tool to accurately assess the impact of attacks and more importantly identify feasible mitigation responses enabling real-time decisionmaking. We designed...

Neuroscience modeling experiments often involve multiple complex neural network and cell model variants, complex input stimuli and input protocols, followed by complex data analysis. Coordinating all this complexity becomes a central difficulty for the experimenter. The Python programming language, along with its extensive library packages, has emerged as a leading "glue" tool for managing all ...

If all communication layers are affected by the specific properties of ad hoc networks, such as unreliability of wireless links or node mobility, both the network and transport communication layers deserve special attention in this context. In this paper we present a Simple Ad Hoc Network Simulator SANS particularly intended for the simulation of distributed programs and protocols on these two ...

Performance analysis of computer networks is rapidly gaining importance as networks increase in size and geographical extent. A simulation approach is often useful. This report describes REAL, a computer network simulator, and presents results of some simulations to illustrate its analytical power. Details of implementation and a performance evaluation are also presented. __________________ 1. ...

In the context of the current multicore revolution, the need to design an effective interconnect network has become increasingly vital. Computer architects make use of network simulators in order to determine the best network designs and configurations. The process by which this is done however is often computationally intensive and requires significant run time. The fact that most simulators a...

Automation of network management starting from existing systems or otherwise, requires technical and non-technical understanding of the related network and systems. This is at times unavailable. In this work absence of, or delay in access to the required information is addressed by starting with simple assumptions about the network and its management. First, a very general framework is describe...

wireless ad hoc networks are composed of independent nodes managing the network without any infrastructure. the connection between nodes is provided by sending packages and by trusting to each other. therefore, using efficient and certain protocols is the essential requirement of these networks. due to special characteristics of wireless ad hoc networks such as lack of a fixed infrastructure, t...

The efficient support of multiple traffic classes with different quality of service requirements (end-to-end delay, jitter, loss) poses an extraordinary complexity in the design of third-generation mobile networks. This task becomes especially critical for the access network, where radio and transmission resources are usually scarce. In this paper we present a simulation model of the ATM-based ...

Traditionally, reliable multicast protocols are deterministic in nature. It is precisely this determinism which tends to become their limiting factor when aiming at reliability and scalability, particularly in highly dynamic networks, e.g., ad hoc networks. In multicast communication, many reliable multicast schemes were studied in order to overcome packet losses in the network. This paper desc...