How to construct Web ontologies that meet applications’ needs has become a key technology to enable the Semantic Web. Manual development of ontologies remains a cumbersome and time-consuming task. In… (More)
0957-4174/$ see front matter 2010 Elsevier Ltd. A doi:10.1016/j.eswa.2010.08.042 ⇑ Corresponding author. Tel./fax: +86 24 83681582 E-mail address: mazongmin@ise.neu.edu.cn (Z.M. UML is the most… (More)
We present the design and implementation of a quadrotor tail-sitter Vertical Take-Off and Landing (VTOL) Unmanned Aerial Vehicle (UAV). The VTOL UAV combines the advantage of a quadrotor, vertical… (More)
How to quickly and cheaply construct Web ontologies has become a key technology to enable the Semantic Web. Classical ontologies are not sufficient for handling imprecise and uncertain information… (More)
Conceptual data modeling has become essential for non-traditional application areas. Some conceptual data models have been proposed as tools for database design and object-oriented database modeling.… (More)
Information imprecision and uncertainty exist in many real-world applications and hence fuzzy data modeling has been extensively investigated in various data models. This paper focuses on the… (More)
The success and proliferation of the Semantic Web depends heavily on construction of Web ontologies. However, classical ontology construction approaches are not sufficient for handling imprecise and… (More)
A significant interest developed regarding the problem of describing databases with expressive knowledge representation techniques in recent years, so that database reasoning may be handled… (More)
In this paper we study the nonchaotic and chaotic behavior of all 3D conservative quadratic ODE systems with five terms on the right-hand side and one nonlinear term (5-1 systems). We prove a theorem… (More)
With the wide utilization of description logics (DLs), researches on applications of DLs have become the important research lines in the Semantic Web. In particular, DLs have been deeply studied in… (More)