This study presents a designing process for refurbishing of a 32 MW rotor-generator damaged coupling. The reason of rotor damage was being hit by the quivers of an explosion. The original coupling was union with the rotor formed after a machining process on a mono block forged rotor. In some areas imposed damages caused the breaking off and detachment of some parts in the coupling flange. Becau...

Merge-and-shrink abstraction is a general approach to heuristic design whose key advantage is its capability to make very fine-grained choices in defining abstractions. The Mergeand-shrink planner uses two different strategies for making these choices, both based on the well-known notion of bisimulation. The resulting heuristics are used in two sequential runs of A∗ search.

We consider the fundamental Mutual Visibility problem for a set of n identical autonomous point robots (n is not known to the robots) that operate following Look-Compute-Move cycles starting from arbitrary distinct positions in the Euclidean plane under obstructed visibility – a robot ri can see robot rj , rj 6= ri, if and only if there is no other robot in the line segment joining their positi...

The aim of this paper is to argue that models in cognitive science based on probabilistic computation should not be restricted to those procedures that almost surely (with probability 1) terminate. There are several reasons to consider nonterminating procedures as candidate components of cognitive models. One theoretical reason is that there is a perfect correspondence between the enumerable se...

Surgeons share their challenges and dilemmas in making ethical decisions in these twelve personal stories. The three commentary articles draw out the lessons the stories address. The commentators come from diverse backgrounds including sociology, bioethics, nursing, and surgery.

PRESENTATION OF THE CASE A 61-year-old man undergoes a sigmoid colectomy for a T3N1 (two of 18 nodes) adenocarcinoma of the sigmoid colon. He recovers well and receives 6 months of adjuvant FOLFOX (5-fluorouracil, leucovorin, and oxaliplatin) uneventfully. At his first follow-up visit, the oncologist recommended every 3 month visits for a physical, liver function tests, and carcinoembryonic ant...