The prevailing view of the dynamics of flapping flags is that the onset of motion is caused by temporal instability of the initial planar state. This view is re-examined by considering the linearized two-dimensional motion of a flag immersed in a highReynolds-number flow and taking account of forcing by a ‘street’ of vortices shed periodically from its cylindrical pole. The zone of nominal inst...

Myosin folding and assembly in striated muscle is mediated by the general chaperones Hsc70 and Hsp90 and a myosin specific co-chaperone, UNC45. Two UNC45 genes are found in vertebrates, including a striated muscle specific form, Unc45b. We have investigated the role of Unc45b in myosin folding. Epitope tagged murine Unc45b (Unc45b(Flag)) was expressed in muscle and non-muscle cells and bacteria...

We reconsider the classical problem of the instability of a flapping flag in an inviscid background flow with a vortex sheet wake, and reformulate it as a nonlinear eigenvalue problem. We solve the problem numerically for the 20 lowest wave number modes. We find that the lowest wave number mode is the first to become unstable, and has the fastest growth rate within 3.5 decades of the stability ...

Computer security competitions and challenges are a way to foster innovation and educate students in a highly-motivating setting. In recent years, a number of different security competitions and challenges were carried out, each with different characteristics, configurations, and goals. From 2003 to 2007, we carried out a number of live security exercises involving dozens of universities from a...

Stagonospora nodorum blotch (SNB) is a significant disease in some wheat-growing regions of the world. Resistance in wheat to Stagonospora nodorum is complex, whereby genes for seedling, flag leaf, and glume resistance are independent. The aims of this study were to identify alternative genes for flag leaf resistance, to compare and contrast with known quantitative trait loci (QTL) for SNB resi...

A small model peptide, the FLAG epitope, was cloned into two filamentous phage display vectors, f88-4 and fd88-4, creating phages f88-FLAG and fd88-FLAG, respectively. Both vectors have a gene VIII display cassette (in addition to their normal phage gene VIII) and display the cloned peptide on a few percent of the virion's 3000-4000 pVIII (major coat protein) subunits. Vector f88-4 has a replic...

Many genetic and molecular alterations, such as K-ras mutation and NF-kappaB activation, have been identified in pancreatic cancer. However, the mechanisms by which pancreatic cancer metastasizes still remain to be determined. Although we previously showed that the tropomyosin-related kinase B (TrkB) was significantly correlated with the development of liver metastasis, its function in pancreat...

Anisotropically conductive materials are important components in subminiature devices. However, at this stage, some defects have limited practical applications of them, especially low anisotropic degree and high cost. Here, we report novel tricolor flag-liked microribbons array prepared by electrospinning technique. The tricolor flag-liked microribbons array is composed of parallel microribbons...

Monte Carlo simulations have been successfully used in classic turn–based games such as backgammon, bridge, poker, and Scrabble. In this paper, we apply the ideas to the problem of planning in games with imperfect information, stochasticity, and simultaneous moves. The domain we consider is real–time strategy games. We present a framework — MCPlan — for Monte Carlo planning, identify its perfor...

English title: Comparison of approaches for the education in information security There’s a tendency in IT security education at universities to not only teach defense mechanisms but also attack techniques. Increasingly more universities offer special labs, where students can experience both the attackers’ and the security administrators’ view. A more competitive form of such labs are the so-ca...