manganese metal-organic framework (mn-mof) containing mn2+ ions, benzenetricarboxylic acid (btc) and n,n-dimethylformamid (dmf) was prepared and used as catalyst for oxidation of alkenes such as 1,1-diphenylethylene, trans-stilbene, cyclohexene, norbornene, styrene and cyclooctene to epoxides with 33-92% conversion and 75-100% selectivity and oxidation of alkanes such as fluorene, adamantane, e...

this paper initially examines theories proposed by feenberg abouttechnical systems and alternative modernity, analyzes his thoughts, andconcludes that a framework of values needs to be provided in shapingtechnical systems. in a society like iran, where policy makers are looking forthe realization of islamic values, this framework of values is derived fromislam. to explain the relationship betwe...

this study investigated the effect of sequencing tasks from simple to complex along +/- reasoning demands on fluency in writing task performance of english as foreign language (efl) learners. the participants of this study included 90 intermediate efl learners from three intact class divisions at the islamic azad uni- versity, shahr-e-qods branch. they were distributed in three groups: experime...

this study investigated the impact of sequencing tasks from simple to complex along +/- reasoning demands on the fluency of writing task performance among efl learners. the participants of the study were 90 inter- mediate efl learners from three classes at islamic azad university, shahr-e-qods branch in iran. they were distributed in three groups: experimental a, experimental b, and a control g...

in this paper, first a great number of inverse problems which arise in instrumentation, in computer imaging systems and in computer vision are presented. then a common general forward modeling for them is given and the corresponding inversion problem is presented. then, after showing the inadequacy of the classical analytical and least square methods for these ill posed inverse problems, a baye...

Background The importance of evaluating policy processes to achieve health equity is well recognised but such evaluation encounters methodological, theoretical and political challenges. This paper describes how a program theorybased evaluation framework can be developed and tested, using the example of an evaluation of the South Australian Health in All Policies (HiAP) initiative.   Methods A f...

The changing of arguments and their attack relation is an intrinsic property of a variety of argumentation systems. So, it is very important to efficiently figure out how the status of arguments in a system evolves when the system is updated. However, unlike other areas of argumentation that have been deeply explored, such as argumentation semantics, proof theories, and algorithms, etc., dynami...

Argumentation theory provides foundations for distributed nonmonotonic reasoning in the form of inter-agent dialogues. However current dialogue models do not accommodate reasoning about possibly conflicting preferences used in arbitrating amongst attacking arguments. We provide a framework for persuasion dialogues that accommodates such reasoning. Agents exchange locutions that implicitly defin...

Until now, AI argumentation-based systems have been mainly developed for handling inconsistency. In that explanation-oriented perspective, only one type of argument has been considered. Several argumentation frameworks have then been proposed for generating and evaluating such arguments. However, recent works on argumentation-based negotiation have emphasized different other types of arguments ...