For most practical quantum control systems, it is important and difficult to attain robustness and reliability due to unavoidable uncertainties in the system dynamics or models. Three kinds of typical approaches (e.g., closed-loop learning control, feedback control, and robust control) have been proved to be effective to solve these problems. This work presents a self-contained survey on the cl...

Abstract Purpose While there are numerous studies comparing open-view autorefractors to subjective refraction or other autorefractors, most between closed and autorefraction tend focus on children rather than young adults. The aim of this study was determine the concordance in non-cycloplegic refractive error two modern objective autorefractors: closed-view monocular Topcon TRK-2P binocular Gra...

Landscape theory provides a formal framework in which combinatorial optimization problems can be theoretically characterized as a sum of a special kind of landscapes called elementary landscapes. The decomposition of the objective function of a problem into its elementary components can be exploited to compute summary statistics. We present closed-form expressions for the fitness-distance corre...

The Frequency Assignment Problem (FAP) is an important problem that arises in the design of radio networks, when a channel has to be assigned to each transceiver of the network. This problem is a generalization of the graph coloring problem. In this paper we study a general version of the FAP that can include adjacent frequency constraints. Using concepts from landscapes’ theory, we prove that ...

Classical conservation approaches focus on the man-made degradation of ecosystems and tend to neglect the socialecological values that human land uses have imprinted on many environments. Throughout the world, ingenious land-use practices have generated unique cultural landscapes, but these are under pressure from agricultural intensification, land abandonment, and urbanization. In recent years...

Success of migration in birds in part depends on habitat selection. Overall, it is still poorly known whether there is habitat selection amongst landbird migrants moving across landscapes. Europe is chiefly covered by agro-forestry mosaic landscapes, so migratory species associated to either agricultural landscapes or woodland habitats should theoretically find suitable stopover sites along mig...

iran with 2500 years ancient culture has been the witness of many changes during the history.the natural context of these habitats has been the victim of some changes during the years, which have roots in people beliefs in each period. but the point which we understand by studding the context of different cultures in iran is, despite the changes in dominions and religions along the history iran...