A high speed 15 ns 4 Mbits asynchronous SRAM, 500 Astand-by current, 300 Krads total dose tolerant, has been developed for space applications, using a hardened 0.25 micron 4 layers metal full CMOS process. A hierarchical organisation per IO bits has been used to achieve high speed as well as low dynamic consumption, also suited for simple SEU (single event upset) induced error corrections, allo...

The central artifact in a MILS system is its policy architecture. This identifies the logical components of the system and their channels for communications, and specifies which components are trusted. The components of the policy architecture are logically separate but may share physical resources under the control of trusted resource-sharing components, such as separation kernels or partition...

H igh-assurance systems are used in environments where failure can cause security breaches or even a loss of life [1]. Examples include avionics, weapon controls, intelligence gathering, and life-support systems. Before such a system can be deployed, there must exist convincing evidence that it can support critical safety as well as security properties. The avionics community has addressed the ...

one method of seed placement into the soil as regards no-till system is the use of punch planting by which one can plant through a considerable depth of surface residue. the study was conducted using a 2?3 split-plot experimental design of three replications. the factors considered were two types of plantes (conventional planter vs. hinging pneumatic punch planter) and three levels of wheat res...

Liquid Hydrogen (LH2) is utilized as a target for the high energy electron beams, up to 20 GeV, available from the two-mile Stanford Linear Accelerator because hydrogen is the purest form of protons attainable and liquefaction increases the density of the protons available for bombardment. This paper will deal with the necessary control systems required for the LH2 target, and special systems d...

We present the first comprehensive experimental characterization of bond wire interconnects at microwave frequencies which includes a repeatability study, modeling and optimization. Wire bond interconnects with two different bond types (ball-crescent and wedge), two different loop types (tight and loose) and two different lengths (15 and 25 mils), were fabricated and experimentally investigated...

A consensus is growing that the Department of Defense’s vision of a future Global Information Grid will be built using architecture that takes advantage of Web services and uses standard Internet protocols, interchangeable components, and commercially available hardware and software wherever possible. This article describes the features and architecture of two systems: the Trusted Services Engi...

OBJECTIVE People living with sickle cell disease (SCD) experience severe episodic and chronic pain and frequently report poor interpersonal treatment within health-care settings. In this particularly relevant context, we examined the relationship between perceived discrimination and both clinical and laboratory pain. METHODS Seventy-one individuals with SCD provided self-reports of experience...