With the escalating significance of personal privacy, one of the most controversial subjects deals with the use of consumer information -should consumers be asked to object to the use of personal data (“opt-out”), or should they be asked to consent to the use of such data (“opt-in”)? Various industry and consumer associations have held contradictory opinions on this question. Fundamentally, the...

We study fixed parameter algorithms for three problems: Kemeny rank aggregation, feedback arc set tournament, and betweenness tournament. For Kemeny rank aggregation we give an algorithm with runtime O(2 √ ), where n is the number of candidates, OPT ≤ ( n 2 ) is the cost of the optimal ranking, and O(·) hides polynomial factors. This is a dramatic improvement on the previously best known runtim...

Optical projection tomography (OPT) is a well-established method for visualising gene activity in plants and animals. However, a limitation of conventional OPT is that the specimen upper size limit precludes its application to larger structures. To address this problem we constructed a macro version called Macro OPT (M-OPT). We apply M-OPT to 3D live imaging of gene activity in growing whole pl...