This work deals with an original problem with regard to the traditionally sequential planning process in public transit networks. This problem aims at modifying the network’s timetables without rendering the vehicle and driver schedules obsolete. The objective is to improve the quality of service for passengers through number and quality of transfers. This approach goes in the opposite directio...

Although intensive work has been devoted to Spatio-temporal (ST) qualitative reasoning models, some issues such as management of complex objects life and motion remain. First, ST histories’ clustering using a set of life and motion configurations is briefly presented. Then, we discuss a model based on the generalization of the life and motion configurations into a set of 25 relationships. These...

A continuous-time consumption-investment model with constraint is considered for a small investor whose decisions are the consumption rate and the allocation of wealth to a risk-free and a risky asset with logarithmic Brownian motion fluctuations. The consumption rate is subject to an upper bound constraint which linearly depends on the investor’s wealth and bankruptcy is prohibited. The invest...

We analyze the bilateral trade of divisible goods in the presence of stochastic transaction costs. Mutual best-response conditions are applied to a model of optimal investment under uncertainty. The first-best solution involves a single transaction, but such behavior is not incentive compatible without courtenforceable contracts. We solve for a second-best policy in which some gains from trade ...

This note provides a short overview of the research work done by the Image and Pattern Analysis (IPAN) group of the Computer and Automation Institute, Hungarian Academy of Sciences (MTA SZTAKI), in Budapest, Hungary. Our major, previous and current research topics are listed and illustrated by typical results. The topics include: 1. texture analysis; 2. wide-baseline stereo; 3. alignment of mea...

Abstract: To evaluate train-running safety during seismicity on an entire railway line quantitatively, we should use risk analysis method. A lot of studies for seismic risk management were widely performed in various kinds of research fields. However, the study for fragility curve of train-running safety has not been conducted and its basic characteristics have not been obtained. Through this s...

A common problem facing roboticists is the creation of fine controlled actions for a robot that must be interspersed with a baseline motion. We define a fine controlled action to be one in which small errors can make the difference in the success or failure of the action. A baseline motion is one that is executed repeatedly over time, such as walking straight or remaining idle. We examine the c...

We present Very Long Baseline Array phase-referenced measurements of the parallax and proper motion of two pulsars, B0919+06 and B1857–26. Sub-milliarcsecond positional accuracy was obtained by simultaneously observing a weak calibrator source within the 40′ field of view of the VLBA at 1.5 GHz. We discuss the merits of using weak close calibrator sources for VLBI observations at low frequencie...

Comparative studies require a baseline reference and a documented process to capture new subject data. This paper combined with its principal reference [1] presents a definitive dataset in the context of snare drum performances along with a procedure for data acquisition, and a methodology for quantitative analysis. The multi-volume dataset contains video, audio, and discrete two dimensional mo...

Hedenström and Alerstam (Hedenström and Alerstam, 1995) argued that different optimal air speeds can be identified for a migrating bird depending on whether the ‘currency’ that the bird is trying to maximise is distance per unit fuel energy used, average speed over one or several flight stages and stopovers, or various other possibilities. On the other hand, Alerstam and Hedenström (Alerstam an...