Type

Database

Creator

Date

Thumbnail

Search results

You search for design and 554,623 records were found.

Demand for high-performance analog-to-digital converter (ADC) integrated circuits (ICs) with optimal combined specifications of resolution, sampling rate and power consumption becomes dominant due to emerging applications in wireless communications, broad band transceivers, digital-intermediate frequency (IF) receivers and countless of digital devices. This research is dedicated to develop a pipeline ADC design methodology with minimum power dissipation, while keeping relatively high speed and high resolution. Pipeline ADC is a mixed-signal system, which consists of sample and hold amplifier (SHA), sub-ADC, multiplying digital-to-analog Converter (MDAC) and bandgap voltage reference, comparator, switch-capacitor circuits and biasing circuits. This project set up a pipeline ADC design flow. It links all the specifications between the sy...
[This item is a preserved copy. To view the original, visit http://econtheory.org/] This paper considers an auction design framework in which bidders get partial feedback about the distribution of bids submitted in earlier auctions: either bidders are asymmetric but past bids are disclosed in an anonymous way or several auction formats are being used and the distribution of bids but not the associated formats are disclosed. I employ the analogy-based expectation equilibrium (Jehiel, 2005) to model such situations. First-price auction in which past bids are disclosed in an anonymous way generates more revenues than the second-price auction while achieving an efficient outcome in the asymmetric private values two-bidder case with independent distributions. Besides, by using several auction formats with coarse feedback a designe...
Mechanism design uses game theory to analyze how to construct mechanisms that give agents incentives to produce an outcome as optimal as possible for the mechanism designer. My dissertation is on robust mechanism design, where the mechanism designer has a great deal of uncertainty about what agents believe about other agents' preferences and beliefs. Much research on robust mechanism design has focused on finding "dominant strategy mechanisms," where agents' equilibrium actions depend only on their preferences and not their beliefs about the other agents. Focusing on such mechanisms makes uncertainty about agents' beliefs irrelevant. Chapters 2 through 5 of my dissertation explore how effective dominant strategy mechanisms are at achieving mechanism designers' goals. Mechanisms are compared by considering performance of the mechanism...
As the feature size of integrated circuits goes down to the nanometer scale, transient and permanent reliability issues are becoming a significant concern for circuit designers. Traditionally, the reliability issues were mostly handled at the device level as a device engineering problem. However, the increasing severity of reliability challenges and higher error rates due to transient upsets favor higher-level design for reliability (DFR). In this work, we develop several methods for DFR at the circuit level. A major source of transient errors is the single event upset (SEU). SEUs are caused by high-energy particles present in the cosmic rays or emitted by radioactive contaminants in the chip packaging materials. When these particles hit a N+/P+ depletion region of an MOS transistor, they may generate a temporary logic fault. Depending...
Conceptual design involves requirements analysis, functional specification, and architectural design. It remains informal and poorly understood. We studied the conceptual design activities of a representative industrial software project, Centauri, for three months with follow-up observations and discussions over the following six months. Our goal was to understand how patterns of collaboration and communication in project teams affect the convergence of the project on a common vision and a documented specification. In this paper, we present our research methodology, our findings, and their implications for process and tool support. The following observations stand out. First, convergence on a common system vision was painfully slow. The major impediment to faster progress was the difficulty that the project team had in making critical ...
This paper provides a detailed description of the general design space for metadata storage capabilities. The design space considers issues of metadata identification, typing and representation, dynamic behavior, predefined and user-defined metadata, schema discovery/update, operations, API packaging/marshalling, searching, and versioning. The design space is used to structure a retrospective analysis of the three major alternative metadata designs considered during the design of the WebDAV distributed authoring protocol. Deployment experience with WebDAV properties is also discussed, with the most successful use occurring in custom client/server pairs and in protocol extensions.
Presented on August 31, 2009 from 6 to 8 pm in the East Architecture Auditorium on the Georgia Tech Campus.
Approved for public release; distribution is unlimited
The aim of this research was to develop and validate a conceptual design management model for international, collaborative remote site projects. In the last decade or so there has been an increasing number of remotely located and often environmentally sensitive sites becoming the focus for development work involving potential investors/entrepreneurs/stakeholders or government and non-government agencies. There were no previously documented empirical examples, nor theoretical models, for remote site design management. Projects on remote sites are frequently government funded, making the approval processes, and timelines for example, subject to political influence, which means that the projects are potentially more difficult to manage, at all levels of involvement. The conceptual model was developed in association with the development of...
Filters are an essential part of telecommunications and radar systems and are key items in the performance and cost of such systems, especially in the increasingly congested spectrum. There has been a particularly marked growth in the cellular communications industry in recent years. This has contributed to both very demanding performance specifications for filters and the commercial pressures for low cost, high volume and quick delivery. Through an investigation into and a subsequent implementation of filter theory, the techniques to produce optimal filter performance for a class of filters are developed in this thesis. This thesis presents an entire design process for filter synthesis of narrow to moderate bandwidth filters, from an investigation of the basic theory through to the development of a generalised synthesis program. This ...
Want to know more?If you want to know more about this cutting edge product, or schedule a demonstration on your own organisation, please feel free to contact us or read the available documentation at http://www.keep.pt/produtos/retrievo/?lang=en