Widespread availability of location aware devices (such as GPS receivers) promotes capture of detailed movement trajectories of people, animals, vehicles and other moving objects. We investigate spatio-temporal movement patterns in large tracking data sets, i.e. in large sets of polygonal paths. Specifically, we study so-called ‘popular places’, that is, regions that are visited by many entitie...

We study the problem of matching applicants to jobs under one-sided preferences; that is, each applicant ranks a non-empty subset of jobs under an order of preference, possibly involving ties. A matching M is said to be more popular than T if the applicants that prefer M to T outnumber those that prefer T to M . A matching is said to be popular if there is no matching more popular than it. Equi...

In the paper we study popular b-matchings, which in other words are popular many-to-many matchings. The problem can be best described in graph terms: We are given a bipartite graph G = (A ∪H,E), a capacity function on vertices b : A ∪H → N and a rank function on edges r : E → N . A stands for the set of agents and H for the set of houses. Each member of a set of agents a ∈ A has a preference li...

I am honoured ,to give the Mitchiner Memorial Lecture this year, a year in which the Royal College of Surgeons of Ed i~bllrgh has held its ,anDual meeting with the R oyal A11ll1y Medi",,1 Corps ill MilIbank and Woolwi ch. There are certain men in our profession who ha ve been outstanding not on1y for their scientific a chievements but also for their perso.nality, which has extended their infl u...

Ba'Pn Tpanslated by J. D. Sinclair. Lonuun. With ̂ 'J,ndal1 & Cox> 1926. Pp. 108. Plates 35. h 60 X-Ray figures. Price, 6s. net. Th radio?S e?ce"ent work is profusely illustrated with nise ?/aPhs, and for those who wish to learn to recoglufj,1e condition and the progress of the tuberculous mended method the book is to be highly recomThe author writes from a wide experience and some of his saying...

This article examines altruistic social norms among the Dolgans and the Nganasans in Arctic Siberia, drawing on and integrating experimental game theory and semiotic approaches. The article demonstrates the complementarity of these two methodologies in order to more fully understand how sharing is promoted over individual selfaggrandizement in a communal-resource property regime. Any theory of ...

Except for a few minor corrections this second printing is identical to the first ([Wang 1987]). The book is meant to be a first attempt to consider G’s life and work as a whole within an inclusive context that, except maybe for chapters 6, 10, and 11, is accessible to most thoughtful people. The many personal contacts that W had with G during the later years of G’s life makes him an important ...