In this article, we define a new class of graphs, the fat-extended P4-laden graphs, and we show a polynomial time algorithm to determine the Grundy number of the graphs in this class. This result implies that the Grundy number can be found in polynomial time for any graph of the following classes: P4-reducible, extended P4-reducible, P4-sparse, extended P4-sparse, P4-extendible, P4-lite, P4-tid...

Urban freight deliveries depend strongly on local regulations and policies to guarantee a tidy and efficient flow of goods towards commercial premises. However, the urban freight delivery system in Spain, which is even more complicated due to the urban morphology and driving behavior, also suffers from a combination of negative factors, including uneven regulations, lack of enforcement and obso...

In this paper 1 we describe the control aspects of Diablo, the UTEP mobile robot participant in two AAAI robot competitions. In the rst competition, event one of the AAAI 96 robot contest, Diablo consistently scored 285 2 out of a total of 295 points. In the second competition, our robot won the rst place in the event \Tidy Up" of the home vacuum contest. The main goal in this paper will be to ...

References 1. Powles T, Paterson A, McCloskey E, Schein P, Scheffler B, Tidy A, Ashley S, Smith I, Ottestad L , Kanis J: Reduction in bone relapse and improved survival with oral clodronate for adjuvant treatment of operable breast cancer [ISRCTN83688026]. Breast Cancer Research 2006, 8:R13. Correction Correction: Reduction in bone relapse and improved survival with oral clodronate for adjuvant...

Eight simple techniques which may be helpful in ant research are presented. They facilitate: (1) collecting ground-nesting ants; (2) prompting ants to go out of their nest chambers; (3) introducing ants into a test tube; (4) recapturing ants during their mass escape in the laboratory; (5) keeping tidy foraging areas of artificial ant nests; (6) keeping high level of air humidity in foraging are...

Most scholars in the humanities and social sciences are comfortable, or at least familiar, with a certain degree of uncertainty in their work. Our subject matter rarely lends itself to tidy, verifiable conclusions; instead, particularly in the wake of postmodern critiques, our scholarly works almost always include a nod to the unknown, the yet to be studied, the likelihood that the passage of t...