We extend a model for the morphology and dynamics of a crawling eukaryotic cell to describe cells on micropatterned substrates. This model couples cell morphology, adhesion, and cytoskeletal flow in response to active stresses induced by actin and myosin. We propose that protrusive stresses are only generated where the cell adheres, leading to the cell's effective confinement to the pattern. Co...

the purpose of this study was to determine the relationship between organizational culture and knowledge management establishment in physical education organization. 120 experts of physical education organization were selected through systematic sampling. two questionnaires (85% validity for organizational culture questionnaire, and 89% validity for knowledge management questionnaire) were used...

Research on intestinal bacteria began around the end of the 19th century. During the last 5 decades of the 20th century, research on the intestinal microbiota made rapid progress. At first, in my work, I first developed a method of comprehensive analysis of the intestinal microbiota, and then I established classification and identification methods for intestinal anaerobes. Using these methods I...

Fibroblasts are fairly easily isolated from a variety of tissues, in this case skin. The cells are fast growing and can be rapidly expanded from small samples. They are suitable for behavioral, functional, biochemical, and genomic studies. Skin fibroblast cultures are started from explants in which the epidermis is enzymatically removed to prevent contamination of the fibroblasts with epidermal...

Key Establishment is one of the most intriguing, fascinating and deeply studied problems in Cryptography. In this paper we propose a brief excursus among ideas and techniques that during the last years have been applied in a variety of settings, in order to design suitable and often mathematically delightful protocols to solve this issue. The presentation uses a very simple language: it is basi...

The main objective of this project is handling the large numbers of faults in F.P.G.A. configurable logic blocks. A key novel feature is the reuse of defective logic blocks to increase the number of effective spares and extend the mission life. To increase fault tolerance, we not only use nonfaulty parts of defective or partially faulty logic blocks, but we also use faulty parts of defective lo...

Haemochorial placentation, as it occurs in the human and other primate and rodent species, requires a connection of the placenta with supplying maternal (uteroplacental) arteries. Very little is known of the initial stages but endovascular trophoblast invasion seems to represent an essential element for further elaboration of an adequate uteroplacental circulation. In the human, endovascular tr...

The extensive use of the Internet, for exchanging information, requesting and offering services make us to interact with unknown entities. Human use trust to facilitate interaction and accept the risk, when complete information is unavailable. In such situations, trust establishment mechanisms enable establishment of trust between unknown entities. Trust is a complex concept to define stringent...

We propose a new class of key establishment schemes which are based on geometric generalizations of the classical Diffie-Hellman. The simplest of our schemes – based on the geometry of the unit circle – uses only multiplication of rational numbers by integers and addition of rational numbers in its key creation. Its first computer implementation works significantly faster than all known impleme...