The current study examined the economics of cooperation in controlled-payoff games by using captive blue jays, Cyanocitta cristata. This investigation used a special feeding apparatus to test for the stability of cooperative choice in a series of iterated games. The jays experienced experimentally determined game theoretical payoff matrices, which determined the distribution of food to themselv...

The piggyBac transposable element was originally isolated from the cabbage looper moth, Trichoplusia ni, in the 1980s. Despite its early discovery and specificity compared to the other Class II elements, the diversity and evolution of this superfamily have been only partially analyzed. Two main types of elements can be distinguished: the piggyBac-like elements (PBLE) with terminal inverted repe...

In a m obile ad-hoc network, nodes cannot rely on a ny fixed infrastructure for routing purposes. Rather, they have to cooperate to achieve this objective. H owever, performing network functions consumes energy and other resources. Therefore, some network nodes may decide against cooperating with others; selfish nodes. Also security issues are more paramount in such networks even more so than i...

In logic-based knowledge representation, query answering has essentially replaced mere satisfiability checking as the inferencing problem of primary interest. For bases in basic description logic ALC, computational complexity conjunctive (CQ) is well known to be EXPTIME-complete and hence not harder than satisfiability. This does change when extended by certain features (such counting or role h...

We consider the communication complexity of implementing a given decision rule when the protocol must also calculate payments to motivate the agents to be honest in an ex post equilibrium (agents’payo¤s are assumed to be quasi-linear in such payments). We …nd that the communication cost of sel…shness when measured with the average-case communication complexity may be arbitrarily large. For the ...