Network Intrusion Detection Systems (nIDS) are nowadays an increasingly important defensive mechanism against numerous attacks taking place on the Internet. As network speed is increasing faster than processor speed, intrusion detection at link speed becomes increasingly more challenging. The most expensive part of a nIDS is pattern matching: finding patterns of attack inside packet payload. Th...

High-end microprocessor designs have recently been incorporating increasingly advanced features, such as larger issue width and speculative out-of-order execution, which are targeted at further extracting instruction-level parallelism from programs. The added design complexity introduced by such mechanisms has led to an alarming increase in design cost and time-to-market for next generation des...

D istributed systems, such as satellite surveillance systems and real-time feeds for financial data, must be heterogeneous, interoperable, extensi-ble, and available. By available, I mean a kind of fault tolerance: able to provide important services despite the partial failure of the computers or software objects in the system. A widely used distributed system standard is the Object Management ...

We describe preliminary work toward a new robustness testing tool, PIRANHA, that exercises boundary and exceptional conditions of network protocol implementations. This automated tool will provide system developers and maintainers the ability to repeatably identify and eliminate robustness failures in protocol subsystems.

STATEMENT OF PROBLEM Polyetheretherketone (PEEK) can be used as a framework material for fixed dental prostheses. However, information about the durable bond to veneering resins is still scarce. PURPOSE The purpose of this study was to investigate the effect of chemical treatments of PEEK on tensile bond strength (TBS) to veneering resins with special emphasis on surface free energy (SFE) and...

We report the use of atomic layer deposition (ALD) coating as a nanobiosensor functionalization strategy for enhanced surface immobilization that may enable higher detection sensitivity. Three kinds of ALD coating films, Al(2)O(3), TiO(2), and SiO(2), were grown on the gallium nitride nanowire (GaN NW) surfaces and characterized with high-resolution transmission electron microscopy (HRTEM) and ...

The bite force of the piranha (Serrasalmidae) has drawn considerable attention due to its ability effectively capture and masticate prey. Herein, we analyze theoretical anterior forces using a lever approach compare them in-vivo maximum forces. We provide mechanics analysis that explains scaling allometry (Foutput) with length fish (l), Foutput?l2.

Abstract Ontogenetic shifts in food preference reduces intraspecific competition as immature individuals eat different types than adults. This diet plasticity could facilitate species’ ability to successfully invade and establish itself a new environment, even when co-occurring with phylogenetically close species. Here, ontogenetic of non-native piranha species (Serrasalmus marginatus) was test...

Piranhas are known to be sound-producing animals. Nevertheless, the biological significance of piranha calls remains unclear because sounds have been recorded only when specimens were held by hand or trapped in a gill net. These sounds are generated by rapid contractions of sonic muscles that insert on a broad tendon surrounding ventrally the cranial sac of the swimbladder. The piranha swimblad...

Passivation of titanium alloy dental meshes cleans their surface and forms a thin layer protective oxide (TiO2) on the material to improve resistance corrosion prevent release ions physiological environment. The most common chemical agent for passivation process is hydrochloric acid (HCl). In this work, we introduce use Piranha solution (H2SO4 H2O2) as passivating bactericidal metallic meshes. ...