Posts Tagged: Publications


25
Nov 06

A Model Driven Tool for Automated System Level Testing Of Middleware

Turker Keskinpala, Abhishek Dubey, Steve Nordstrom, Ted Bapty, Sandeep Neema

Proceedings of Fourth System Testing and Validation Workshop (STV 06), 2006.

This paper presents a contribution to the challenges of manually creating test configurations
and deployments for high performance distributed middleware frameworks. We present our
testing tool based on the Model Integrated Computing (MIC) paradigm and describe and
discuss its generative abilities that can be used to generate many test configurations and
deployment scenarios from high-level system specifications through model replication.


25
Nov 06

GHOST: Guided Healing and Optimization Search Technique for Healing Large-Scale Embedded Systems

Steve Nordstrom, Abhishek Dubey, Turker Keskinpala, Sandeep Neema, Ted Bapty

Third IEEE International Workshop on Engineering of Autonomic & Autonomous Systems (EASE’06), ease, pp. 54-60, 2006.

Reflex and Healing architectures have been shown to provide adequate user-defined initial failure mitigation behaviors in the presence of system faults. What is lacking, however, is a user-guided means of healing the system after the initial reflexes have been enacted. This process should be autonomic in the sense that new system configurations can be achieved by defining a priori only a small set of criteria to which the healed system should conform. What follows is an explanation ofthis technique for guided healing which allows system designers to direct the healing process from a higher level in such a way that the resulting system configurations satisfy their particular needs. A brief example outlining the application of this approach is given.


21
Nov 06

Verifying Autonomic Fault Mitigation Strategies in Large Scale Real-Time Systems

Abhishek Dubey, Steve Nordstrom, Turker Keskinpala, Sandeep Neema, Ted Bapty

Third IEEE International Workshop on Engineering of Autonomic & Autonomous Systems (EASE’06), 2006

In large scale real-time systems many problems associated with self-management are exacerbated by the addition of time deadlines. In these systems any autonomic behavior must not only be functionally correct but they must also not violate properties of liveness, safety and bounded time responsiveness. In this paper we present and analyze a realtime Reflex Engine for providing fault mitigation capability to large scale real time systems. We also present a semantic domain for analyzing and verifying the properties of such systems along with the framework of real-time reflex engines.


21
Nov 06

Knowledge Sharing techniques for Egocentric Navigation

T. Keskinpala,, D.M. Wilkes, K. Kawamura, and A.B. Koku

Proceedings of the IEEE International Conference on Systems, Man, and Cybernetics (SMC), Washington, DC, October 5-8, 2003, pp. 2469-2476, 2003

Teams of humans and robots working together can provide effective solutions to problems. In such applications, effective human-robot teaming relies on being able to communicate information about the current perception or understanding of the environment. In this paper, human-robot teaming on navigational tasks is discussed. The role of the human user will be to specify the goal point(s) for the robot, and also to interact with the robot in the event of perceptual errors. A novel navigation method, Egocentric Navigation (ENav), has been developed based on egocentric representations. In this paper, two knowledge sharing methods are described which exploit the characteristics of ENav. In the first method, robots share Landmark EgoSpheres, and in the second method the robot shares it Sensory EgoSphere with the human user for visual perception correction.


21
Nov 06

Color-Based Object Tracking to Improve Mobile Robot Navigation

T. Keskinpala, A.B. Koku, H. Kaymaz Keskinpala

World Multi-Conference on Systems, Cybernetics, and Informatics (SCI 2002), Volumen 5, Orlando, Florida, USA, 15-17 July, 2002


21
Nov 06

Perception-Based Navigation for Mobile Robots

K. Kawamura, D.M. Wilkes, A.B. Koku, T. Keskinpala

Proc. of Multi-Robot System Workshop, Washington D.C, March 18-20, 2002

Perception-Based Navigation approach briefly described in this paper aims to move a mobile robot towards a target location based on the current visual perception without requiring any range information.