Feature based design has been regarded as a promising approach for CAD/CAM integration.This paper aims to establish a domain independent representation formalism for feature based design in three aspects: formal re...Feature based design has been regarded as a promising approach for CAD/CAM integration.This paper aims to establish a domain independent representation formalism for feature based design in three aspects: formal representation,design process model and design algorithm.The implementing scheme and formal description of feature taxonomy,feature operator,feature model validation and feature transformation are given in the paper.The feature based design process model suited for either sequencial or concurrent engineering is proposed and its application to product structural design and process plan design is presented. Some general design algorithms for developing feature based design system are also addressed.The proposed scheme provides a formal methodology elementary for feature based design system development and operation in a structural way.展开更多
The processing of personal data gives a rise to many privacy concerns,and one of them is to ensure the transpar-ency of data processing to end users.Usually this information is communicated to them using privacy polic...The processing of personal data gives a rise to many privacy concerns,and one of them is to ensure the transpar-ency of data processing to end users.Usually this information is communicated to them using privacy policies.In this paper,the problem of user notifcation in case of data breaches and policy changes is addressed,besides an ontol-ogy-based approach to model them is proposed.To specify the ontology concepts and properties,the requirements and recommendations for the legislative regulations as well as existing privacy policies are evaluated.A set of SPARQL queries to validate the correctness and completeness of the proposed ontology are developed.The proposed approach is applied to evaluate the privacy policies designed by cloud computing providers and IoT device manu-facturers.The results of the analysis show that the transparency of user notifcation scenarios presented in the privacy policies is still very low,and the companies should reconsider the notifcation mechanisms and provide more detailed information in privacy policies.展开更多
Based on the definition of a logic structure feature to relate logically functional requirements to geometric representation independent upon detailed geometric representation, this paper presents an idea of logical s...Based on the definition of a logic structure feature to relate logically functional requirements to geometric representation independent upon detailed geometric representation, this paper presents an idea of logical structure modeling for computer aided conceptual design and makes attempt to establish a representation formalism of logic structure modeling. The definition and representation of logical structure feature are given and an assembly module definition for supporting top down conceptual design is also proposed. The proposed scheme contributes to several aspects of conceptual design research, especially to provide elementarily a formal methodology for computer aided conceptual design system development and operation.展开更多
Performance art in every region and country depends mainly on rules, customs, and beliefs of that particular society hence; this art enjoys diversity with respect to its forms and contents. In contemporary lran, with ...Performance art in every region and country depends mainly on rules, customs, and beliefs of that particular society hence; this art enjoys diversity with respect to its forms and contents. In contemporary lran, with the emergence of new artistic movements, performance art incorporated more academic and enlighten aspects. New mass media and modern visual medium such as light, sound, moving, and changing images, video displays as well as application of new signs and symbols are some of the special characteristics of the contemporary performance art in Iran. Moreover, the performance art in Iran is not merely related to the contemporary era rather it encompasses a large number of traditional representations that have been prevalent among common people with much meaningful rules. Its popularity among common people is also a conceptual art which conveys a content-based meaning in a more dramatic sense. For centuries, the tradition of performance art in Iran can be observed in the rules of Ta＇aziehkhani （quite singing or passion play）, Shamayelgardani （icon handling）, Ru-howzi （performance on pool platform）, Marekegiri （mono drama）, Qhashoqhzani （spoon handling） and Aroosakgardani （puppet handling）. Aestheticism relying on traditional performing method is also the outcome of taste and elegance of common people. These performances have more folkloric aspects protruding from humane institutions and blended with their vernacular beliefs. In the traditional method of performance art, performers mostly enjoy their own taste and style and use handy means for executing their roles. In contemporary Iran, traditional method along with modern theme has been widespread among people particularly in villages and small townships although these are not called as art. The present study is an attempt to study existing challenges to modern and ancient art traditions as well as aesthetic values attributed to each of them.展开更多
This essay talks mainly about the differences between aesthetic emotions and everyday emotions.Firstly we need to be sure that the work of art has something to do with emotions both of artists and audience.The paper t...This essay talks mainly about the differences between aesthetic emotions and everyday emotions.Firstly we need to be sure that the work of art has something to do with emotions both of artists and audience.The paper tries to prove this from the perspectives of expressionism,formalism and representationalism.Then the paper differentiates the two kinds of emotions from three aspects.Audience need to keep psychical distance from arts,contemplating art in a disinterested way and use imagination to arouse the aesthetic emotions.Although aesthetic emotions are different from everyday emotions,there are some relations between them.The meaning of appreciating works of art is mainly to realize much more delicate or significant emotions that we could not or do not want to acquire in our limited and realistic daily life,through which we broaden our lives and know more about ourselves and the world we live in.展开更多
文摘Feature based design has been regarded as a promising approach for CAD/CAM integration.This paper aims to establish a domain independent representation formalism for feature based design in three aspects: formal representation,design process model and design algorithm.The implementing scheme and formal description of feature taxonomy,feature operator,feature model validation and feature transformation are given in the paper.The feature based design process model suited for either sequencial or concurrent engineering is proposed and its application to product structural design and process plan design is presented. Some general design algorithms for developing feature based design system are also addressed.The proposed scheme provides a formal methodology elementary for feature based design system development and operation in a structural way.
文摘The processing of personal data gives a rise to many privacy concerns,and one of them is to ensure the transpar-ency of data processing to end users.Usually this information is communicated to them using privacy policies.In this paper,the problem of user notifcation in case of data breaches and policy changes is addressed,besides an ontol-ogy-based approach to model them is proposed.To specify the ontology concepts and properties,the requirements and recommendations for the legislative regulations as well as existing privacy policies are evaluated.A set of SPARQL queries to validate the correctness and completeness of the proposed ontology are developed.The proposed approach is applied to evaluate the privacy policies designed by cloud computing providers and IoT device manu-facturers.The results of the analysis show that the transparency of user notifcation scenarios presented in the privacy policies is still very low,and the companies should reconsider the notifcation mechanisms and provide more detailed information in privacy policies.
文摘Based on the definition of a logic structure feature to relate logically functional requirements to geometric representation independent upon detailed geometric representation, this paper presents an idea of logical structure modeling for computer aided conceptual design and makes attempt to establish a representation formalism of logic structure modeling. The definition and representation of logical structure feature are given and an assembly module definition for supporting top down conceptual design is also proposed. The proposed scheme contributes to several aspects of conceptual design research, especially to provide elementarily a formal methodology for computer aided conceptual design system development and operation.
文摘Performance art in every region and country depends mainly on rules, customs, and beliefs of that particular society hence; this art enjoys diversity with respect to its forms and contents. In contemporary lran, with the emergence of new artistic movements, performance art incorporated more academic and enlighten aspects. New mass media and modern visual medium such as light, sound, moving, and changing images, video displays as well as application of new signs and symbols are some of the special characteristics of the contemporary performance art in Iran. Moreover, the performance art in Iran is not merely related to the contemporary era rather it encompasses a large number of traditional representations that have been prevalent among common people with much meaningful rules. Its popularity among common people is also a conceptual art which conveys a content-based meaning in a more dramatic sense. For centuries, the tradition of performance art in Iran can be observed in the rules of Ta＇aziehkhani （quite singing or passion play）, Shamayelgardani （icon handling）, Ru-howzi （performance on pool platform）, Marekegiri （mono drama）, Qhashoqhzani （spoon handling） and Aroosakgardani （puppet handling）. Aestheticism relying on traditional performing method is also the outcome of taste and elegance of common people. These performances have more folkloric aspects protruding from humane institutions and blended with their vernacular beliefs. In the traditional method of performance art, performers mostly enjoy their own taste and style and use handy means for executing their roles. In contemporary Iran, traditional method along with modern theme has been widespread among people particularly in villages and small townships although these are not called as art. The present study is an attempt to study existing challenges to modern and ancient art traditions as well as aesthetic values attributed to each of them.
文摘This essay talks mainly about the differences between aesthetic emotions and everyday emotions.Firstly we need to be sure that the work of art has something to do with emotions both of artists and audience.The paper tries to prove this from the perspectives of expressionism,formalism and representationalism.Then the paper differentiates the two kinds of emotions from three aspects.Audience need to keep psychical distance from arts,contemplating art in a disinterested way and use imagination to arouse the aesthetic emotions.Although aesthetic emotions are different from everyday emotions,there are some relations between them.The meaning of appreciating works of art is mainly to realize much more delicate or significant emotions that we could not or do not want to acquire in our limited and realistic daily life,through which we broaden our lives and know more about ourselves and the world we live in.
