1 I n t r o d u c t i o n Digitized time-ordered image sequences provide an actually rich support to analyze and interpret temporal events in a scene. Obviously the interpretation of dynamic scenes has to rely somehow on the analysis of displacements perceived in the image plane. During the 80's, most of the works have focused on the two-frame problem, that is recovering the structure and motio...

IN their discussion of mutation in stationary populaTheir data, and that of Rosche and Foster (1999), show that any given class of mutation is z10 times less tions of Escherichia coli, Bull et al. (2000) conclude that all the mutations are arising in a small fraction of common in single (Lac) mutants than in double mutants (Lac plus a second mutation). For example, Torthe population. They give ...

This paper presents a few ideas on how to solve certain geometrical problems arising very often in character design, not directly solvable by METAFONTs plain macros. The first part of the paper presents two geometrical problems: the “k problem” and the “x problem”, their solutions using dichotomy, and a different solution using path intersections. The latter was proposed earlier on the net by t...

Occupational health and safety management systems (OHSMS) have become popular as agencies such as OSHA expect to propose regulations and as consensus standards and industry programs such as ANSI/AIHA/ASSE Z10, OHSAS 18001 and National Mining Association’s (NMA) CORESafety are implemented. Other management-system-like processes have been implemented over the years as well, including OSHA’s Proce...

In 2008, it is estimated that 148,810 new cases of colorectal cancer (CRC) will be diagnosed in the United States and that 49,960 people will die from the disease (1); lung cancer is the only cancer that kills more people each year in developed countries than CRC. According to almost universal consensus based largely on indirect evidence from a decade or more ago, effective implementation of sc...

We show that there are discrete gauge symmetries protect naturally heavy X particles from decaying into the ordinary light particles in the supersymmetric standard model. This makes the proposal very attractive that the superheavy X particles constitute a part of the dark matter in the present universe. It is more interesting that there are a class of discrete gauge symmetries which naturally a...

The French Unhappiness Puzzle: The Cultural Dimension of Happiness This article sheds light on the important differences in self-declared happiness across countries of equivalent affluence. It hinges on the different happiness statements of natives and immigrants in a set of European countries to disentangle the influence of objective circumstances versus psychological and cultural factors. The...

for cell 1 and vice versa for the branch from the left The idea that cortical neurons code information not only side. Due to the finite axonal conduction speed, these in their average rate of discharge but also in the temporal branching patterns set up delay lines that run in opposite pattern of spike discharge has generated much recent fashion for the two monaural input channels. We refer to c...

The key message on the use of unopposed estrogen and estrogen plus progestin after menopause is clear: increased risks of stroke, coronary heart disease, pulmonary embolism, and breast cancer outweigh reduced risks of fractures and colorectal cancer. Individual riskbenefit profiles will, of course, vary, but current clinical guidelines emphasize use for symptom relief only, at low doses and for...

for cell 1 and vice versa for the branch from the left The idea that cortical neurons code information not only side. Due to the finite axonal conduction speed, these in their average rate of discharge but also in the temporal branching patterns set up delay lines that run in opposite pattern of spike discharge has generated much recent fashion for the two monaural input channels. We refer to c...