Robert R. Krchnavek

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– This paper reports on a multidisciplinary undergraduate research project to design, develop, and test a low cost Automated Crash Notification system. The completed in-vehicle system combines wireless communications and Global Positioning Systems with a network of silicon accelerometers to detect a serious automotive collision and automatically summon(More)
To successfully exploit the benefits of optical technology in a tightly coupled multicomputer, the architectural design must reflect both the advantages and limitations of optics. This article describes a class of such architectures, based upon inverted-graph topologies. We consider the physical construction of these systems, demonstrating the relevant(More)
 The newly started Electrical and Computer Engineering program at Rowan University was visited by ABET's EAC for the first time in October 2000. As we prepared for our program evaluation under EC 2000, we explored novel mechanisms for assessing our curricular outcomes and " closing the loop " in an effort to develop ongoing methods for continuous program(More)
To successfully exploit the benefits of optical technology in a tightly-coupled multicomputer, the architectural design must reflect both the advantages of optics and the limitations of optics. This paper describes a class of such architectures, based upon inverted graph topologies. Two instances of this class (an inverted hy-percube and an inverted mesh)(More)
 We have developed a new Electrical and Computer Engineering (ECE) program at Rowan University. The first class graduated in May 2000. Features include: a continuous Engineering Clinic sequence, a mixture of two-, three-, and four-credit courses, and technology focus electives. Project-based instruction is employed as a tool for motivating students and to(More)
— Single-mode optical D-fiber is fabricated and coupled to single-mode acrylic waveguides by use of a novel technique utilizing alignment ways and a transcision. The D-fiber is fabricated by lapping the cladding layer of a single-mode fiber to the core. Optical waveguides and alignment ways are made with polymers by photolithography. This technique allows(More)
Hydrogen silsesquioxane ͑HSQ͒ is used as a high-resolution, negative-tone, inorganic electron-beam resist for use in nanoimprint lithography. Previous studies show that 1 week long exposure delay in air decreases sensitivity and enhances the contrast of HSQ ͓F. In this work, the authors report that the electron-beam dose required for high-resolution(More)
iOS is Apple's mobile operating system and is presently used on the iPhone, iPad, and iPod Touch. The hardware platforms associated with the iOS operating system provide a powerful platform for sensor applications. In this paper, we provide a case study on the development of a digital multimeter (DMM) using an iPod Touch. The DMM case study addresses the(More)
Hydroquinone (HQ) was used as the principal chemical reducing agent to prepare aqueous silver nanocolloids from silver nitrate. The data demonstrate that HQ is unable to initiate the particle growth process on its own, but is able to sustain particle growth in the presence of pre-existing metallic clusters. This unique selectivity is similar to that seen in(More)