A rugged and high throughput capillary column (cLC) LC-MS switching platform using large volume injection and on-line automatic filtration and filter back-flush (AFFL) solid phase extraction (SPE) for analysis of environmental water samples with minimal sample preparation is presented. Although narrow columns and on-line sample preparation are used in the platform, high ruggedness is achieved e...

We have developed a new remote and interactive laboratory for engineering students who are learning digital design and need to test digital circuits on a FPGA board platform. The aim of this project is to make a more efficient use lab resources over the Internet, so that students can test digital circuits as if they were testing in loco and not in simulation. Students, or any one interested, ar...

Giotto provides an abstract programmer’s model for the implementation of embedded control systems with hard real-time constraints. A typical control application consists of periodic software tasks together with a mode switching logic for enabling and disabling tasks. Giotto specifies time-triggered sensor readings, task invocations, actuator updates, and mode switches independent of any impleme...

BACKGROUND Platform switching for maintaining peri-implant bone levels has gained popularity among implant manufacturers over the last few years. However, the assumption that the inward shifting of the implant-abutment junction may preserve crestal bone was primarily based on serendipitous finding rather than scientific evidence. The objectives of the present study were to systematically review...

In this paper, we propose a uniform adaptive routing strategy for wormhole-routed hypercube networks that accommodates both unicast and multicast communication. Based on a node labeling method, the resultant routing algorithms are shown to be deadlock-free without requiring virtual channels. The order in which the destinations are visited is important to ee-ciency. We present an ordering algori...

The study of consumers’ switching from one service provider to another has a long tradition in economics, information systems, and marketing. The emergence of electronic commerce presents new challenges in understanding consumers’ switching intentions in the context of e-commerce in general and online auctions in particular. With the abundance of literature on online auctions, there is a surpri...

This paper presents a comparative study of the performance of commonly used modulation techniques for Indoor Optical Wireless Communications. Some commonly used modulation schemes such as OOK, PPM, PIM and MSM are discussed and their properties are compared with respect to their power and bandwidth requirements. Their relative merits and demerits are also highlighted. The results were computed ...

The global telephony infrastructure is rapidly evolving from circuit-switching to IP-based packet-switching. Voice over IP (VoIP) is becoming common and is the intended base technology for corporate giants such as AT&T and Qwest. The marketing research firm, IDC, states “IP telephony is poised to become the fastest-growing, network services market of the decade” [1]. Reference [2] reviews the m...

This paper introduces a simplified inverter circuit using single dc source and an H-bridge with least possible number of “switching devices”. topology does not employ multiple “dc sources”, which enhances the reliability configuration. The consists two parts, namely: “Level generation parts” as well “Polarity parts”, it is mixture some switching devices, DC-link capacitor DC completes part leve...