The automatic layout of metro maps has been investigated quite intensely over the last few years. Previous work has focused on the octilinear drawing style where edges are drawn horizontally, vertically, or diagonally at 45◦. Inspired by manually created curvy metro maps, we advocate the use of the curvilinear drawing style; we draw edges as Bézier curves. Since we forbid metro lines to bend (e...

Auto-discovery capabilities of management systems typically pertain to network elements as a whole, i.e., the ability to automatically detect which network elements are connected to a network and to discover their type and physical and logical configuration. Serviceand network-layer information, on the other hand, is in general not discovered but provisioned and provided by the organization ope...

Studies have shown that cardiovascular risk factors, such as obesity, blood lipid levels, start early in childhood and some are on the rise in children. Data on trends are important in order to identify if there is a problem. This study, part of the Tehran Lipid and Glucose Study, determined and compared the prevalence of overweight and its associated risk factors in 2555, 1 329 and 1158 Tehran...

We investigate the new problem of automatic metro map layout. In general, a metro map consists of a set of lines which have intersections or overlaps. We define a set of aesthetic criteria for good metro map layouts and present a method to produce such layouts automatically. Our method uses a variation of the spring algorithm with a suitable preprocessing step. The experimental results with rea...

Security situation awareness is a new technology about security. This paper brings it to the assessment of security situation of metro station which serves as a new way to secure the security of passengers as well as the operation of the metro station. This paper sets up an index system for assessing the security situation awareness and makes a prediction model for the security situation of met...

This thesis examines algorithms for the drawing of metro maps. The most important elements of a metro map are stations and lines connecting the stations. In the context of this thesis, we restrict the elements used for representing lines to one of two classes: On the one hand, circular segments lying on circles with a common center S are allowed. On the other hand, line segments lying on lines ...