Improving GIS-based models for bicycling speed estimations

Spreadsheet-based GIS Models

Performance-improving techniques in web-based GIS

WebGIS (also known as web-based GIS and Internet GIS) denotes a type of Geographic Information System (GIS), whose client is implemented in a Web browser. WebGISs have been developed and used extensively in real-world applications. However, when such a complex web-based system involves the dissemination of large volumes of data and/or massive user interactions, its performance can become an iss...

Evaluation of Speed and Torque Estimations for the EKF-based Direct Torque Control in Induction Machines

Abstract Accurate estimations of unmeasurable variables are required for increasing the performance of sensorless induction motor drives. This can be achieved if the required variables are accurately estimated with a well-established observer. The paper presents an extended Kalman filterbased direct torque control to investigate the estimations of speed and torque under challenging rotor and st...

Comparison of Three GIS-Based Hydrological Models

Three geographic information system GIS -based distributed hydrological models were developed for flood simulation and forecasting in a subbasin of the Yellow River. A grid-and-topography-based distributed hydrological physical model, i.e., the GTOPMODEL model, is described that includes vegetation and root interception, evapotranspiration, and runoff generation via the saturation excess mechan...

Improving Initial Estimations for Structure from Motion Methods

In Computer Graphics as well as in Computer Vision and Autonomous Navigation, Structure from Motion is a common method to register cameras. Usually several steps are involved with bundle-adjustment as the final one. A good initial estimation of camera positions is of crucial importance for the success of the bundle-adjustment and is the core component of any Structure from Motion system. Yet th...