Fragments of a method to formally specify object-oriented models of a universe of discourse are presented. The task of finding such models is divided into three subtasks, object classification, event specification, and the specification of the life cycle of an object. Each of these subtasks is further subdivided, and for each of the subtasks heuristics are given that can aid the analyst in deci...

In enterprise integration, a data-exchange specification is an architectural artifact that evolves along with the business. Maintaining a coherent, data-exchange, semantic model is an important, yet non-trivial task. A coherent, semantic model of dataexchange specifications supports reuse, promotes interoperability, and, consequently, reduces integration costs. Components of data-exchange speci...

National Institute of Standards and Technology Gaithersburg, Maryland 20899, U.S.A. ABSTRACT In enterprise integration, a data exchange specification is an architectural artifact that evolves along with the business. Developing and maintaining a coherent semantic model for data exchange is an important, yet non-trivial, task. A coherent semantic model of data exchange specifications supports re...

ten varieties of iranian soybeans are cultivated in different areas of the country; persia or sahar (sr), hill (hl), williams (wz), gorgan 3 (gn), clarke (kl), hawkey (hk), zaan (zn), harcor (hr), dare (dr) and simes (ss), grown in tropical regions. samples of these 10 varieties were obtained from the institute of plant and seed research. after sample preparation, their oils were extracted and ...

Despite significant advances in the access control domain, requirements of new computational environments like web services still raise new challenges. Lack of appropriate method for specification of access control policies (ACPs), composition, verification and analysis of them have all made the access control in the composition of web services a complicated problem. In this paper, a new indepe...

background and aim: hearing impairment is one of the common disabilities quality of life of mothers of children with hearing impairment are often lower than others. this study aimed to evaluate the effects of life skills training (lst) on the quality of life of mothers who have children with hearing impairment. methods: an experimental research method (pretest, post-test with control group desi...

conclusions our findings show that, at provincial levels, a complex set of known/unknown influencing factors affect individuals’ assessments of their own health quality. understanding these patterns of srh and ls could be useful for better health policy and more targeted studies in this field. background self-rated health (srh) and life satisfaction (ls) are of increasing interest to medical re...