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Aiming at multi-robot online evacuation from unknown polygon, this paper proposed the problem of multirobot online evacuation from a regular hexagon based on the original evacuation model（triangle, square, circle）. 2 k（ k≥1） robots with wireless communication start from the same starting point, search for the exit on the regular hexagon boundary cooperatively and evacuate. The evacuation cost is the time it takes for all robots to be evacuated from the exit. This paper analyzed the efficiency of the algorithm using evacuation overhead. According to the number of robots and the initial position, when k=1, robots are initially at the regular hexagonal boundary or inside; when k>1, robots are initially at the regular hexagon boundary. This paper proposed respectively efficient online algorithms of multirobot evacuation for the above situations. It proves that increasing the number of robots has a positive significance in reducing the algorithm overhead when the starting point of the robots is the same. [ABSTRACT FROM AUTHOR]

We develop a modeling framework that links online search and box office revenues in order to examine the dynamic patterns of consumer online search and its role in predicting the market performance of motion pictures both before and after theatrical releases. We empirically test the model in the context of the Chinese motion picture industry. Our findings provide evidence that both the volume and the growing pattern of online search for a movie have predictive power on its opening-week market performance. Results of a dynamic simultaneous-equations model further reveal that online search is both a precursor and an outcome of sales in the later run of a movie's lifetime. Out-of-sample analysis shows that incorporating online search helps make more accurate forecasts. [ABSTRACT FROM AUTHOR]

A new solving method called local accurate search was proposed for the calculation of allowable attack area of air-to-surface missiles. Compared with traditional method, the local accurate search can search the area online and reduce the time of search with the required precision. The new method employs the local search to find an accurate result by combining the traditional flight range table with the model calculation method, which meets the requirements for attacking of moving target and fast calculation. [ABSTRACT FROM AUTHOR]