Designs are often modiied for use in new circumstances. If formal proof is to be an acceptable veriication methodology for industry , it must be capable of tracking design changes quickly. We describe our experiences formally verifying an implementation of an ATM network component, and on our subsequent veriication of modiied designs. Three of the designs veriied are in use in a working network...

The paper presents several algebraic models for semantics of bidirectional model synchronization and transformation. Different types of model synchronization are analyzed (view updates, selective and incremental synchronization), and this analysis motivates the formal definitions. Particularly, a new formal model of updates is proposed. Relationships between the formal models are precisely spec...

We present a design framework for small-satellite systems that ensures that (1) each satellite has a consistent theory to infer new information from information it perceives and (2) the theory for the entire system is consistent so that a satellite can infer new information from information communicated to it. This research contributes to our Reliable and Formal Design (RFD) process, which stri...

We consider the problem of representing plans for mixed-initiative planning, where several participants cooperate to develop plans. V~re claim that in such an environment, a crucial task is plan communication: the ability to suggest aspects of a plan, accept such suggestions from other agents, criticize plans, revise them, e~c., in addition to building plans. The complexity of this interaction ...

This paper outlines the emergence of formal techniques, explaining why they were slow to take on an industrially acceptable form. The contemporary scene, in which formal techniques are increasingly packaged within tools usable by a wide variety of engineers, is reviewed, as are the promising prospects for the future.

Recently Web-Based Instruction (WBI) has been adopted for many educational systems in order to support distance education. WBI has become popular in that it overcomes time and space limitation in traditional educational systems. But due to lack of face-to-face communication, it is crucial that WBI provide interactivity and motivation for students. This paper introduces a formal model that evalu...

NARS is an AGI project developed in the framework of reasoning system, and it adapts to its environment with insufficient knowledge and resources. The development of NARS takes an incremental approach, by extending the formal model stage by stage. The system, when finished, can be further augmented in several directions.

This paper explores the results discussed in “A fine is a price” by Gneezy and Rustichini [2000a. A fine is a price. Journal of Legal Studies 29, 1–17] regarding the effect of fines on parents who collect their children late from day-care centers. We suggest a complementary explanation, analyzing a formal model that qualifies but does not lose the predictive power of the deterrence hypothesis. ...