A novel 2D filter design methodology

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A heuristic approach for multiple restricted multiplication

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Fast word-level power models for synthesis of FPGA-based arithmetic

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Developing consumer-based service brand equity via the internet: The role of personalization and trialability

The commercialization of the Internet has provided opportunities for building service brands in the minds of consumers. Services are characterized as intangible, heterogeneous, inseparable, and perishable features that often engender high information costs and, hence, low perceived value to potential consumers. When a service is available via the Interneta medium that can subdivide and rebuild the service into personalized offeringspotential consumers become better informed in advance of what the service provides. The Internet also permits most services to be trialable before consumption. These new features, empowered by the Internet, have important implications for what we call consumer-based service brand equity (CSBE), the value that potential consumers assign to a service brand. This article investigates the effects of service personalization and trialability on the development of CSBE of Internet banking service, a typical service available via the Internet. Results from a laboratory experiment indicate that both service personalization and trialability have significant positive influences on the development of the CSBE of an Internet banking service brand. While personalization was found to indirectly influence CSBE development by mediating the perceived benefits of the brand, trialability exerted both a direct and an indirect effect. Trialability developed the brand's CSBE by first mediating the information through gathering cost savings and then the perceived benefits of the brand. Implications of the study's results are discussed.published_or_final_versio

Optimal combined word-length allocation and architectural synthesis of digital signal processing circuits

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Reduced-precision Algorithm-based Fault Tolerance for FPGA-implemented Accelerators

© Springer International Publishing Switzerland 2016.As the threat of fault susceptibility caused by mechanisms including variation and degradation increases, engineers must give growing consideration to error detection and correction. While the use of common fault tolerance strategies frequently causes the incursion of significant overheads in area, performance and/or power consumption, options exist that buck these trends. In particular, algorithm-based fault tolerance embodies a proven family of low-overhead error mitigation techniques able to be built upon to create self-verifying circuitry. In this paper, we present our research into the application of algorithm-based fault tolerance (ABFT) in FPGA-implemented accelerators at reduced levels of precision. This allows for the introduction of a previously unexplored tradeoff: sacrificing the observability of faults associated with low-magnitude errors for gains in area, performance and efficiency by reducing the bit-widths of logic used for error detection. We describe the implementation of a novel checksum truncation technique, analysing its effects upon overheads and allowed error. Our findings include that bit-width reduction of ABFT circuitry within a fault-tolerant accelerator used for multiplying pairs of 32 × 32 matrices resulted in the reduction of incurred area overhead by 16.7% and recovery of 8.27% of timing model fmax. These came at the cost of introducing average and maximum absolute output errors of 0.430% and 0.927%, respectively, of the maximum absolute output value under transient fault injection

KAPow: A System Identification Approach to Online Per-Module Power Estimation in FPGA Designs

In a modern FPGA system-on-chip design, it is often insufficient to simply assess the total power consumption of the entire circuit by design-time estimation or runtime power rail measurement. Instead, to make better runtime decisions, it is desirable to understand the power consumed by each individual module in the system. In this work, we combine boardlevel power measurements with register-level activity counting to build an online model that produces a breakdown of power consumption within the design. Online model refinement avoids the need for a time-consuming characterisation stage and also allows the model to track long-term changes to operating conditions. Our flow is named KAPow, a (loose) acronym for ‘K’ounting Activity for Power estimation, which we show to be accurate, with per-module power estimates as close to ±5mW of true measurements, and to have low overheads. We also demonstrate an application example in which a permodule power breakdown can be used to determine an efficient mapping of tasks to modules and reduce system-wide power consumption by over 8%

An empirical investigation of the determinants of user acceptance of Internet banking

The growth in the use of the Internet as a distribution channel of products and services offered by various businesses has been phenomenal. One such application is Internet banking services. As more and more financial institutions are finding ways to utilize Internet technologies to launch Internet banking services, an important issue is to understand what factors will impact the decisions of customers in adopting the service. Based on Davis's technology acceptance model with 4 additional variables that are theoretically justified as having influence on perceived usefulness and perceived ease of use, a research model for the investigated technology acceptance was developed and empirically examined, using responses from more than 160 intended users of the technology. Results of the data analysis generally support the model as well as 7 of 8 of the proposed hypotheses. In particular, personalization, alliance services, task familiarity, and accessibility were found to have significant influence on perceived usefulness and perceived ease of use, which, in turn, were found to be important factors in fostering a positive attitude toward accepting the services. Several implications for both research and practice have emerged and are discussed.published_or_final_versio