Existential risks are those that threaten the entire future of humanity. Many theories of value imply that even relatively small reductions in net existential risk have enormous expected value. Despite their importance, issues surrounding human-extinction risks and related hazards remain poorly understood. In this article, I clarify the concept of existential risk and develop an improved classi...

Predicting the failure modes effect and criticality analysis (FMECA) of a dynamic positioning (DP) system using fuzzy logic is aim this research. The identification DP systems subsystems, classification into critical less-critical levels based on Risk Priority Number (RPN) to depict main root causes in are some objectives support goal. offers details number issues, including their effects funct...

The widespread use of the Internet has significantly changed the behavior of homebuyers. Using information technology, homebuyers can rapidly find an appropriate house that meets their needs. Although online real estate agents can screen out first based on homebuyers’ requirements, however, most of current online housing systems are of limited abilities, particularly without considering homebuy...

In delay tolerant networks (DTNs), broadcasting is an important routing function that supports the distribution of data to all users in the network. Efficient broadcasting in DTNs is a challenging problem due to the lack of continuous network connectivity. In this paper, we consider the limited bandwidth scenario for DTN broadcasting. Our scheme aims to provide a ticket-based multiple packet br...

J Bone Joint Surg [Br] 2008;90-B:1558-61. Public disclosure of outcome-orientated ranking of hospitals is becoming increasingly popular and is routinely used by Swedish health-care authorities. Whereas uncertainty about an outcome is usually presented with 95% confidence intervals, ranking’s based on the same outcome are typically presented without any concern for bias or statistical precision....

The notion of default priority has played a central role in default reasoning research. We show that Pearl’s Z-ranking of default rules need not always correspond to priorities. System Z can still be used for priorities, but perhaps not in the obvious manner. Rather than the Z-ranking of rules, we show that the Zrankings of the negations of the material counterparts of rules correspond naturall...

Dominance relationships are common among primates, and are usually the result of resource competition. Adult male chimpanzees have pronounced dominance relationships, and can be ranked relative to one another in dominance hierarchies. Adult male chimpanzees achieve, and maintain, high rank through a combination of physical size, strength and political ability. Dominance in male chimpanzees has ...

Query scheduling plays an important role when systems are faced with limited resources and high workloads. It becomes even more relevant for servers applying multiple query optimization techniques to batches of queries, in which portions of datasets as well as intermediate results are maintained in memory to speed up query evaluation. In this work, we present a dynamic query scheduling model ba...