Constantin Serban - Research

Constantin Serban
Core 344
110 Frelinghuysen Rd
Piscataway, NJ 08854

(732) 445-6450 ext. 9533

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Projects

• LGI and Moses middleware: Part of the LGI core implementation buildup, I refined and implemented the Moses middleware. This resulted in its milestone release (October 2005): www.moses.rutgers.edu
  New features include the Java Laws, the new portable Prolog interpreter and a whole set of supporting tools, the Controller Manager and the Law Server.
• Regulated RMI: In this project I proposed a generalized access control model and flexible protocol semantics for synchronous communication. The proof of concept implementation -- Regulated RMI (RRMI) -- aims to be source-compatible with original Java RMI, and it provides fine-grained, stateful, and server-independent access control. In the same time, it is a configurable protocol that supports various timeout mechanisms, server notifications/compensation, and RPC call semantics ("at most once", "at least once", "exactly once"). The RRMI suite uses LGI control, a new RMIC compiler and a new registry application.
• Hot Policy Updates : In this project I designed a mechanism for on-line updating the policy of a distributed system without incurring inconsistencies. Its implementation of Hot is done in the context of LGI, using Java Laws. Among the most notable characteristics of Hot Policy Updates are the policy support for: i) initiating the update process, ii) mapping the state of the policy pre and post update, iii) discovering inconsistencies between different/incompatible policies effective at the same time. Additionally, Hot Policy Updates offers a great flexibility in the way a new policy is propagated throughout an entire distributed system.

Software

• I implemented Moses middleware which is available to download, free at www.moses.rutgers.edu/download.html.
  I have also developed, and I am maintaining, its web site. An infrastructure, hosted at Rutgers, is up and running most of the time. It can be found at www.moses.rutgers.edu/online/, and it exhibits a neat tool, the Controller Manager which I have built for maintaining (starting, stopping) and monitoring services for controllers deployed in a cluster of servers. This functions as a directory service for our infrastructure of controllers as well.
• The RRMI suite can be downloaded now as part of the core Moses distribution at www.moses.rutgers.edu/download.html. An example, and tutorial on how to use RRMI can be found here. More documentation will be made public soon.

Industry Experience

• My internship (and part-time work ) at OBI Johnson&Johnson turned out to be a very interesting experience. Check out the website that I have built there www.anemiapro.com. Under it, there is a whole framework that implements much, if not all, the business logic of OBI (30+ Oracle tables ). I also reengineered and automated PiPAL modules which are accessed by lots of different websites.
• In my previous life I have worked on low level programming for industrial control and data acquisition systems. Beside writing lots of drivers (in Assembler, C), I reached the pinnacle when I designed and implemented the monitoring system of a ship engine (with 250+ parameters to observe )

Last updated: Mon Jan 14 23:38:10 EST 2008