A novel, Lyapunov-based visual servo controller is presented that stabilizes both the entire image and pose error vectors simultaneously, rather than a subset of the errors. Furthermore, the controller uses adaptive depth estimation to eliminate the need to measure depth or obtain knowledge of the scene. A stability proof is presented. Simulation and experimental results compare the performance...

Feline immunodeficiency virus (FIV)-based lentiviral vectors are useful for introducing integrated transgenes into nondividing human cells. This article describes the production and use of advanced generation FIV vectors. Key properties are discussed in comparison to other lentiviral vectors. Additional topics include the practical implications of species-specific retroviral restriction factors...

lentiviral vectors are promising gene delivery tools capable of transducing a variety of dividing and non-dividing cells, including pluripotent stem cells which are refractory for transduction by murine retroviruses. although there is a growing debate on the safety of lentiviral vectors for gene transfer, in particular for those derived from human immunodeficiency viruses, type one (hiv-1) and ...

For the accurate perception of multiple, potentially overlapping, surfaces or objects, the visual system must distinguish different local motion vectors and selectively integrate similar motion vectors over space to segment the retinal image properly. We recently showed that large differences in speed are required to yield a percept of motion transparency. In the present study, to investigate t...

background: geographic distribution of west nile virus (wnv) is heterogeneous in iran by a high circulation in the southern-western areas. the objective of our study was to determine environmental and climatic factors associ­ated with the risk of wnv equine seropositivity in iran. methods: serological data were obtained from a serosurvey conducted in equine population in 260 districts in iran. ...

A novel planar IPPCT tree (PIPPCT) that holds higher data rate is presented based on analysis of main topologies characteristics of current dynamic graph watermarking system (DGW). Multiple dimensional IPPCT tree (MIPPCT) model and three identity vectors of DataRate uuuuuuuuuur , structure uuuuuuuuuur and Total uuuuur concerning it are constructed and presented, then the effect of these vectors...

In this paper, we propose a new temporal error concealment algorithm for the forthcoming video coding standard H.264, which uses a first-order plane to estimate motion vector. In H.264, a 16 16 inter macroblok can be divided into variant block shape for motion prediction. The blocks within a small area are likely to move in the same direction. By using the motion vectors that next to the vertic...