5153 research outputs found
Sort by
An Innovative Simulation Environment for Cross-Domain Policy Enforcement
No full textPolicy-based management is necessary for cross-domain organization collaborations and system integrations. In reality different systems from different organizations or domains have very different high-level policy representations and low-level enforcement mechanisms. To ensure the compatibility and enforceability of one policy set in another domain, a simulation environment is needed prior to actual policy deployment and enforcement code development. The goal of this paper is to propose an enforcement architecture and develop a simulation framework for cross-domain policy enforcement. The entire environment is used to simulate the problem of enforcing policies across domain boundaries when permanent or temporary collaborations have to span multiple domains. The middleware derived from this simulation environment can also be used to generate policy enforcement components directly for permanent integration or temporary interaction
The Scribbler
No full textThis is the April 2011 edition of the Scribe, the April Fool's Day issue, alternately titled the Scribbler
Electrical Grounding - theory and application
No full text© ASEE 2011We discuss the engineering principles of Hi-voltage (any voltage above 600 volts). We cite 4 examples that typify some of the problems facing the Engineer and technician working with Hi-voltages, including geometry considerations, the need to follow proper protocol and the laws (both scientific and political) governing Hi-voltage. Poor design considerations in capacitor construction is the first case we consider, as well as the lack of proper protocols in discharging same. In the second case, a warning can be made that one should never get too close to a Hi-voltage line, unless the power is cut. In the third case, following simple rules in measurement of an unknown voltage could avoid a serious accident. In the fourth case, a high voltage shows up in a low-voltage circuit. These unfortunate cases are used as teaching tools to impart details of electrical safety in common industrial setting
Quantitative Trait Loci Associated with the "Shade Avoidance" Type Response in A. thaliana when Grown under Oscillating Daily Summer Temperatures
No full textA poster discussing "shade avoidance" in A. thaliana plants
Bridging Future US-China Relations through the Study of Mao Zedong
No full textA poster on Mao Zedong and the perceptions of him by both the United States and China
Wireless Distance-Verifying Security System for ID Card/Document Enrollment Stations
No full textModern ID Cards and passports have evolved into sophisticated, complex positive-ID instruments that embody a wide variety of anti-cloning and anti-forgery techniques, such as: digitized biometrics, micro-printing, encryption, RFID, embedded processing, holo-graphic overlays, and UV/IR-visible features, among others. This poster describes a practical system for protecting against theft of the enrollment stations that produce these ID instruments, by providing a "lock" to a specific location. If a protected enrollment system is moved from that location, it will fail to function. This non-GPS location-locking technique is strongly protected against sniffing and spoofing, is immune to relay attacks, and cannot be copied - not even by its manufacturer
Policy Conflict Analysis in Social Network
No full textTemporal logic has been well studied for decades, and its logic expressions are used in many reasoning system. However, the information explosion makes logic reasoning becomes harder and harder. There are a lot of information have to be considered in logic reasoning. Relationships and related information make temporal logic cannot easily specify an information domain. Knowledge becomes a basis of information analysis. We propose a Semantic Temporal Logic, which incorporates relationships between different elements in a specific knowledge domain into temporal logic using a semantic format to represent domain elements
VHDL Implementation of High Performance and Dynamically Configured Multi-port Cache Memory
No full textThis project presents the implementation of 64x64 multi-port dynamically configured SRAM in VHDL (VHSIC hardware description language). It employs isolation nodes and dynamic memory partitioning algorithm to facilitate simultaneous multi-port accesses without duplicating bit-lines. VHDL test-bench is developed to verify the functionality of the dynamically configured memory. Results demonstrate that critical memory operations such as "read miss", "write miss" and "write bypass" can be performed using newly proposed low power, area efficient dynamically configured memory
