Stereoelectronic effects is a bridge between structure and reactivity [1]. Anomeric effect plays an important role in the domain of stereoelectronic interaction and can be used for description of several unusual phenomena. Intramolecular negative hyperconjugation is also known as anomeric effect [2]. In anomeric effect, both donor (lone pairs) and acceptor groups (electronegative elements) coex...

This paper also appears in the Proceedings of the Tenth International Conference on Artificial Intelligence. Milan. Italy. August 1987. In recent years knowledge-based techniques like explanation-based learning. qualitative reasoning and case-based reasoning have been gaining considerable popularity in Al. Such knowledge-based methods face two difficult problems: (1) the performance of the syst...

How does someone react when he faces a critical situation in his life? In this paper we present an initial initial implementation architecture based on a simulation model described in [10] In our model we mainly consider the interactions between a person concerned and factors like his environment and his own abilities. Using the empolis information access suite, we currently implement our model...

The paper presents an approach to building an Integrated Learning Architecture in which Case-Based Reasoning is used both as a corrective of solutions inferred by other problem-solving paradigms and as a method for accumulating and reening knowledge of a Knowledge Based System. The proposed architecture is intended to solve the classiication task. The applications of the approach for case-based...

Software agents \live" in changing environments. Perception and actions of agents need to adapt dynamically to new situations. This paper is concerned with meta-agent protocols, an approach to support the modular and portable implementation of various kinds of agent systems. Meta-agent protocols are derived from object-based reeective systems that allow access to the state and structure of a pr...

1 Context and challenges Model checking is a technique used to verify that a certain system's design satisfies its requirements. Given some models of the design and system's requirements formulated as formal properties, the system model can be checked [1], and if properties are violated, the model checker provides the user with counter examples that represent execution sequences (traces) leadin...

this study presents empirical evidence concerning the effect of different accounting standard on earnings management. prior studies have shown that accounting standards influence earnings management. tighter accounting standards regime restricts management’s descretion to manipulate accruals, and at the same time, induce more costly real earnings management activities. to investigate this iss...

background :comparing computer and internet based instruction with traditional giving lecture would provide enough evidence to identify best teaching practice. in this study, we compared lecture, interactive internet based and computer based learning regarding medical students' knowledge acquisition and satisfaction in teaching pathophysiology of hematology and oncology.   methods : eighty four...

the present study intended to look into and compare the possible effects of competitive team-based learning (ctbl) with learning together (lt) or cooperative group-based learning (cgbl) – the most popular method of cooperative learning (cl) -- on oral performance of iranian efl intermediate students. after administering the oral interview, this researcher selected a group of 40 almost homogeneo...