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- Badashian, A. S., et al.
(författare)
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CFM : A file manager with multiple categorization support
- 2010
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Ingår i: SEKE 2010 - Proceedings of the 22nd International Conference on Software Engineering and Knowledge Engineering. - 1891706268 - 9781891706264 ; , s. 748-751
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Konferensbidrag (refereegranskat)abstract
- This paper introduces a new file manager to support multiple categorization. The proposed file manager is designed based on a subtle idea named Conceptual File Management (CFM). According to this approach, files are not contained by folders; nevertheless, each file can be a member of one or more folders (concepts). A prototype file manager is designed and implemented based on the new approach. Filtering by set operations and also manual concept selection improves retrieval of the files. CFM improves file system's clarity and avoids ambiguity and redundancy. As a result, it reduces the size of file system and enhances file access.
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| 3. |
- Badashian, A. S., et al.
(författare)
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Conceptual file management : Revising the structure of classificationbased information retrieval
- 2010
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Ingår i: 2010 5th International Conference on Digital Information Management, ICDIM 2010. - 9781424475728 ; , s. 108-113
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Konferensbidrag (refereegranskat)abstract
- This paper addresses the Information Retrieval issues by today's hierarchical systems such as file systems. They usually contain substantial amount of redundant items. Maintaining the structure becomes difficult when large amount of items exist and ambiguity occurs in the structure. In this study, a conceptual method is presented that replaces the " containment" principle involved in current systems by " membership" principle. The proposed Conceptual File Management (CFM) method allows a file to be accessed from multiple folders; furthermore, it keeps the current hierarchical structure with minor changes. CFM reduces the ambiguity and redundancy, therefore the quality of information retrieval is improved. A Conceptual File Manager based on the above-mentioned principle has been developed. Experiments show that it improves the quality of the system in terms of maintaining the structure and retrieving the desired items easier and faster based on users' viewpoints. CFM is applicable to not only traditional file systems on computers, but also file systems on cell phones (and message storage systems), site maps in Web sites, Content Management Systems, taxonomies, and in general, classification based structures.
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| 5. |
- Badashian, A. S., et al.
(författare)
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Designing a collaborative educational system : A competitive approach to e-learning
- 2010
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Ingår i: 2010 5th International Conference on Digital Information Management, ICDIM 2010. - 9781424475728 ; , s. 478-483
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Konferensbidrag (refereegranskat)abstract
- Tens of thousands of universities are today educating students with different methods for a vast variety of majors. This paper aims to introduce Knowledge Tree (KT) as an integrated virtual structure to be used in the educational systems. A collaborative structure is utilized to define a universal curriculum for various university majors worldwide to maximize e-learning capabilities. Then, a collaborative competitive approach is introduced to enrich the contents of course topics offered based on the mentioned structure. The results based on both educational facts fetched from the search engines and a questionnaire filled by a group of academics from different universities show that this system performs well in educational systems in terms of time, effort and cost.
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| 6. |
- Mahdavi, Jafar, et al.
(författare)
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Pro-inflammatory cytokines can act as intracellular modulators of commensal bacterial virulence
- 2013
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Ingår i: Open Biology. - : The Royal Society Publishing. - 2046-2441. ; 3:10
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Tidskriftsartikel (refereegranskat)abstract
- Interactions between commensal pathogens and hosts are critical for disease development but the underlying mechanisms for switching between the commensal and virulent states are unknown. We show that the human pathogen Neisseria meningitidis, the leading cause of pyogenic meningitis, can modulate gene expression via uptake of host pro-inflammatory cytokines leading to increased virulence. This uptake is mediated by type IV pili (Tfp) and reliant on the PilT ATPase activity. Two Tfp subunits, PilE and PilQ, are identified as the ligands for TNF-α and IL-8 in a glycan-dependent manner, and their deletion results in decreased virulence and increased survival in a mouse model. We propose a novel mechanism by which pathogens use the twitching motility mode of the Tfp machinery for sensing and importing host elicitors, aligning with the inflamed environment and switching to the virulent state.
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