Simple, continuous and consistent physics based model for flicker noise in MOS transistors

Although there is still controversy about its origin, the designer requires accurate models to estimate 1/f noise of the MOS transistor in terms of its size, bias point and technology. Conventional models present limitations, they usually do not consistently represent the series-parallel association of transistors and they may not provide adequate results for all the operation regions, particularly moderate inversion. In this work we review current flicker noise models, paying particular attention to their behavior along the different operation regions and to their seriesparallel association properties. We present a physics based model for flicker noise following classical carrier fluctuation theory. With the aid of a compact, continuous model for the MOS transistor it has been possible to integrate the contribution to drain current noise of the whole channel area arriving at a consistent, continuous, and simple model for the 1/f noise

A fully integrated 0.5 -7 hz cmos bandpass amplifier

In this paper, the design methodology of a fully integrated gm-C, 0.5-7Hz band-pass amplifier is presented. The amplifier is designed to be employed in signal conditioning of a piezoelectric accelerometer, which is part of an implantable biomedical device. Transconductances of the OTAs range from 30pS to 100nS. Such low values of transconductances, which are required owing to the large time-constants involved, were obtained with the aid of a current division technique. Measurement results for OTA structures and part of the filter fabricated in a standard 0.8μm technology are presented

IT Workforce Trends: Implications for Curriculum and Hiring

At the 2007 Americas Conference on Information Systems (AMCIS), panelists discussed a continuing research project about the current IT workforce and future trends, presenting the latest results of an international Web-based survey. The project is sponsored by the Society for Information Management (SIM) International Advocacy Program and consists of two phases. The initial phase was a study of workforce trends in IT client companies and was completed in 2006. IT executives from client firms say it is critical to own business and project management capabilities, and they especially value them in their mid-level hires. Technical capabilities are more likely to be externally sourced, but they are also sought in entry-level hires. The second phase is a study of trends in service provider companies and is ongoing. Our preliminary results indicate that provider firms also value project management and business domain capabilities over technical capabilities. In the panel, we compared the Phase 2 (provider) results to the Phase 1 results from client organizations and discussed the implications of the data for curriculum design, hiring and training practices

A fully integrated physical activity sensing circuit for implantable pacemakers

PostprintThis paper shows the implementation of a fully integrated Gm-C 0.5-7Hz bandpass filter-amplifier with gain G=400, for a piezoelectric accelerometer which is part of a rate adaptive pacemaker. The fabricated circuit operates up to 2V power supply, consumes only 230nA current, and achives 2.1μVrms input noise. Detailed circuit specifications, measurements, and a comparative analysis of the system performance are presented

The Connection between Compositional Language and the Theory of other Minds

Abstract In this paper I wish to disambiguate the components of TOM, analyze them, and focus on the single pre-requisite that is commonly said to "systematically aid" TOM, namely, compositional language (Fitch, 2004). I will argue that compositional language is neither necessary nor sufficient for having a theory of other minds, and support this thesis with examples from animals that do not have compositional language, but do exhibit characteristics of TOM, and examples from organisms with compositional language, but do not provide evidence for having a TOM. The paper culminates with a call for further conceptual analysis of TOM, and suggests a promising direction of building layers of attribution of the concept as "sorites" type, admitting of degrees of ascription

The Demand for Information Technology Knowledge and Skills: An Exploratory Investigation

Organizations are always in search of appropriate information technology knowledge and skills to carry out normal business operations. Such demand is directly impacted by the overall economic conditions. During stressful economic times, managers, facing tough budgetary pressure, are farced to examine more thoroughly what knowledge and skills are needed to survive. This paper investigates the desired information technology knowledge and skills that employers are searching for in these turbulent times. We examine the content ofjob advertisements for information technology professionals placed in an online job placement website over a 2 year period, 2001-2002

Information Technology Wages and the Value of Certifications: A Human Capital Perspective

Although the value of Information Technology (IT) certifications has been widely debated in the IT industry, academia has largely ignored the issue. This study intends to bridge such a gap. Anchored on human capital theory and previous literature, we build a comprehensive model to estimate the value of various IT certifications in terms of their contributions to IT professionals\u27 wages. We estimate our model using third-party survey data. The three main findings from the study are: 1) IT certifications are valuable in general; 2) there is a substitution effect between IT certifications and education and between IT certifications and experience; and 3) the value of IT certifications are job and industry specific. In addition, we estimate wage premiums of various IT certifications in the study. From these findings, we draw managerial implications for current and future IT professionals, IT managers, and human resource managers

Service Quality Measurement: Past and Future

Organizations seek to measure their quality of services as a basis for improvements. Many servicequality measures from marketing, supply chain, and information systems have been formulated and testedover the last 50 years, developing generic customer satisfaction measures. This research reviews theresearch from the three disciplines, developing directions for future research on service quality. Suggestedfuture research directions include a more context-specific, medium-sensitized approach to services, that isable to measure not only human services but also co-produced and machine-produced services