Many animals, including insects, successfully engage in visual homing. We describe a system that allows a mobile robot to home. Specifically, we propose a simple extension to our original homing scheme which significantly improves its performance by incorporating a richer view of the environment. The addition of landmark apparent-size cues assists homing by providing a more robust homing vector...

Objective(s): Cord blood (CB) is known as a valuable source of hematopoietic stem cells (HSC). Identifying strategies that enhance expansion and maintain engraftment and homing capacity of HSCs can improve transplant efficiency. In this study, we examined different culture conditions on ex vivo expansion and homing capacity of CB-HSCs. Materials and Methods: In this study, 4-5 different units o...

Homing sequence derivation for nondeterministic finite state machines (NFSMs) has important applications in software/hardware system testing and verification. Unlike prior methods based on explicit tree-based search, this article we formulate the of a preset/adaptive homing terms quantified Boolean formula (QBF) solving. This formulation exploits compact circuit representation NFSMs QBF encodin...

P-element vectors are commonly used to make transgenic Drosophila and generally insert in the genome in a nonselective manner. However, when specific fragments of regulatory DNA from a few Drosophila genes are incorporated into P-transposons, they cause the vectors to be inserted near the gene from which the DNA fragment was derived. This is called P-element homing. We mapped the minimal DNA fr...

To investigate the population dynamics of anadromous Baltic Sea perch Perca fluviatilis (Linnaeus), we studied migratory behaviour (arrival to spawning location) and structure (genetic differentiation) three closely located (<50 km) populations. Spawning migration lasted for 32–80 days, passive integrated transponder tag (PIT-tag) data indicated that displayed reproductive homing. Populations w...

Reasonable trajectory planning is the precondition for parafoil airdrop system to achieve autonomous accurate homing, and safe landing. To successfully realize self-homing of system, a new optimization design scheme proposed in this paper. The based on parafoil’s unique flight control characteristics adopts segmented homing design. current common method faces problem, whereby straight-line dist...

A mobile group I intron containing two ribozyme domains and a homing endonuclease gene (twin-ribozyme intron organization) can integrate by reverse splicing into the small subunit rRNA of bacteria and yeast. The integration is sequence-specific and corresponds to the natural insertion site (homing site) of the intron. The reverse splicing is independent of the homing endonuclease gene, but is d...

Homing is the phenomenon whereby transplanted hematopoietic cells are able to travel to and engraft or establish residence in the bone marrow. Various chemomkines and receptors are involved in the homing of hematopoietic stem cells. This paper outlines the classic homing protocol used in hematopoietic stem cell studies. In general this involves isolating the cell population whose homing needs t...

Many group I introns encode endonucleases that promote intron homing by initiating a double-stranded break-mediated homologous recombination event. In this work we describe intron homing in Bacillus subtilis phages SPO1 and SP82. The introns encode the DNA endonucleases I-HmuI and I-HmuII, respectively, which belong to the H-N-H endonuclease family and possess nicking activity in vitro. Coinfec...

Continuous thymic homing of haematopoietic progenitor cells (HPCs) via the blood is critical for normal T-cell development. However, the nature and the differentiation programme of specialized thymic endothelial cells (ECs) controlling this process remain poorly understood. Here using conditional gene-deficient mice, we find that lymphotoxin beta receptor (LTβR) directly controls thymic ECs to ...