The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
This paper mainly introduces a hybrid algorithm to solve vertical trajectory optimization problem during aircraft descent. According to the flap schedule of aircraft, the problem can be formulated as a multiple-phase optimal control problem. Pseudo-spectral method is used to discretize the continuous optimal control problem into nonlinear programming (NLP) problem. Then we adopt a hybrid method, namely...
GUI (Graphical User Interface) testing is complex and inefficient in nowadays software testing. This paper proposed a framework for automated GUI test case generation. The framework includes a reverse engineering of executive GUI to create GUI information and event-flow model. According to these information and model, an ant colony algorithm is applied to generate test cases. Our study shows that...
This paper studies a common traffic problem in China: a large number of bus lines share the same stop. In rush hours, a long queue of buses waiting to get into the stop, which causes a rise of bus delay and a drop of traffic capacity nearby. First, a cellular automaton model is proposed to simulate such traffic scenarios. Second, to re-designing such busy bus stops to enhance efficiency, some principles...
This paper studies the following driving scenario that is common in China and many Asian developing countries: a bus has to temporarily occupy the bicycle lane in order to stop and pick up passengers, where the mixed traffic flow is composed of motorized vehicles and bicycles. A special cellular automation model is proposed to examine the governing factors that influence the delay of a bus near a...
From 8th to 24th in August 2008, a set of Traffic Demand Management (TDM) policies were applied in Beijing during the 2008 Olympic Games. These TDM strategies include improving performance of the existing transportation network, staggering work schedules and limiting the use of public vehicles and private vehicles. This paper studies the performance targets, the implementation details and the effects...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.