Astronauts and robots must collaborate effectively to safely and efficiently explore harsh extraterrestrial environments. This paper describes a basic planning tool to distribute tasks among a hybrid human-astronaut team, then examines likely scenarios in which an astronaut either deviates from the plan (e.g., to opportunistically explore) or requires assistance from a rover (e.g., when in dist...

A new species from Iran is described and illustrated here as Kickxia iranica (Plantaginaceae). Kickxia iranica is morphologically similar to K. commutata, a species native to Mediterranean region, however it can be distinguished from the latter by leaf shape, color of corolla, habit, stem branching and length of leaf, petiole, pedicel and corolla. Notes on its distribution, ecology and phenolog...

Abstract Branching-stable processes have recently appeared as counterparts of stable subordinators, when addition real variables is replaced by branching mechanisms for point processes. Here we are interested in their domains attraction and describe explicit conditions a random walk to converge after proper magnification branching-stable process. This contrasts with deep results obtained during...

We illustrate the importance of branching in planning by exploring alternative branching schemes in Graphplan. As argued elsewhere, Graphplan can be understood as a heuristic search planner that performs an IDA* regression search with a heuristic function encoded in the plan graph. Here, we study two alternatives to Graphplan where the IDA* search algorithm and the heuristic encoded in the plan...

Aims: Evolutionary branching is a process of evolutionary diversification induced by frequency-dependent ecological interaction. Here we show how to predict the occurrence of evolutionary branching in bivariate traits when populations are evolving directionally. Methods: Following adaptive dynamics theory, we assume low mutation rates and small mutational step sizes. On this basis, we generaliz...

We consider a continuous-time symmetric branching random walk on multidimensional lattice with finite set of particle generation centers, i.e., sources. The existence positive eigenvalue the evolutionary operator means exponential growth first moment total number particles both at an arbitrary point and entire lattice. Branching walks or negative intensities sources that have simplex configurat...