http://dlib.iit.ac.lk/xmlui/handle/123456789/418 2026-04-06T22:11:09Z 2026-04-06T22:11:09Z Karunamoorthy, Dileban Devinuwara, Neomal http://dlib.iit.ac.lk/xmlui/handle/123456789/423 2020-05-27T02:43:35Z 2005-01-01T00:00:00Z

Monitoring & manging dynamic distributed systems Karunamoorthy, Dileban; Devinuwara, Neomal The growing number of middleware for building distributed systems has made it increasingly difficult to monitor and manage them. This is especially the case when different and often interacting systems based on different middleware technologies are deployed on a single site. Proper administration of such systems requires proper monitoring, which in turn requires the extraction of quality information from the underlying systems at runtime. The proxy pattern, although seemingly simple, can be put to good effect to address problems of this nature. By dynamically generating proxies capable of intercepting and logging invocations the characteristics, behavior and relationships of processes can be ascertained at runtime, providing a global view on the behavior of entire systems in operation. This paper addresses these two concerns, the need to have a comprehensive global view on distributed systems and the viability of the proxy pattern as a technique for achieving it.

2005-01-01T00:00:00Z Abeysooriya, Milantha Kulasekere, Chulantha http://dlib.iit.ac.lk/xmlui/handle/123456789/422 2020-05-27T02:38:05Z 2005-01-01T00:00:00Z

Free route air traffic flow manager Abeysooriya, Milantha; Kulasekere, Chulantha As the world moves towards the era of globalization and as the business world continues to revolutionize, meeting the expectations of a timely and safe air transportation system has become major challenge to the field of aviation. Most of the existing air traffic control systems primarily focus on generating pre-defined routes for aircrafts based on the 'fixed route model'. But with the advancement of technologies in the field of aviation an effective and practical mechanism called 'free route modeling' has been introduced. The few test beds that exist worldwide based on this concept, have been implemented for certain specific airspaces eliminating the possibility of using this strategy at any location worldwide. This paper presents the design and implementation of the 'free route air traffic flow manager' project which proposes a framework which can be used as a generic tool to over come this limitation. This tool will allow the user to dynamically create a free route modeling system for a certain airspace by configuring a 3D airspace according to the given requirements for that airspace. The dynamically developed free route modeling system will facilitate the functionalities of generating the initial free route for an aircraft & provide dynamic re- planning for the configured air space when a conflicting scenario is reported.

2005-01-01T00:00:00Z