DNA within eukaryotic organisms is packaged into chromatin, which helps organization and compaction of the genetic material in the limited space within the nucleus. However, for efficient transcription, nucleosome positioning must be dynamically regulated, either allowing access to the transcription machinery or to block spurious gene expression [1]. Nucleosomes are inherently stable structures...

You can discover more about a person in an hour of play than in a year of conversation (Plato). For the past 6-7 years, I have been examining ways to leverage good video games to assess and support important student competencies, especially those that are not optimally measured by traditional assessment formats. The term "stealth assessment" refers to the process of embedding assessments deeply...

in order to determination of ileum apparent and true digestibility of two samples of poultry by product meal, an experiment was conducted with a total of 60 day-old broiler chicks, ross 308 strain. poultry by-product meal was prepared from two slaughter house in alborz province. samples were sent to laboratory for determination of chemical analysis. the birds received commercial broiler starter...

This is a slightly expanded written version of a plenary lecture given at the 20th IEEE Conference on Decision and Control, December 198 1, San Diego, CA. This talk is intended to help spark discussion among researchers in decision, control and estimation about the status of research in the field and of promising new directions for research. One such direction, model-based signal processing, is...

Certain human tumors are extensively infiltrated by eosinophils and contain extracellular deposits of eosinophil peroxidase, which uses hydro gen peroxide as a substrate to produce highly toxic hypohalous acids. We hypothesized that J5SSL HI, an interieukin 5-transfected murine plasma cytoma that is infiltrated by numerous degranulating eosinophils, would be especially sensitive to killing by h...

Stealth games are genre of games that require the player to sneak past guards to reach a goal location. Designing a level for a stealth game is difficult, however, as the stealth paths in a level depend on a complex interplay of the physical space, the movements of enemies, and other factors. One such factor that makes the creation of good levels much more complicated, but also makes the levels...