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Model Driven Engineering for Distributed Real-Time Embedded Systems 2009

Advances, Standards, Applications and Perspectives

Model-based development methods, and supporting technologies, can provide the techniques and tools needed to address the dilemma between reducing system development costs and time, and developing increasingly complex systems. This book provides the information needed to understand and apply model-drive engineering (MDE) and model-drive architecture (MDA) approaches to the development of embedded systems. Chapters, written by experts from academia and industry, cover topics relating to MDE practices and methods, as well as emerging MDE technologies. Much of the writing is based on the presentations given at the Summer School “MDE for Embedded Systems” held at Brest, France, in September 2004.

Testing is a widely used validation technique to increase software quality. It
consists of executing the System Under Test (SUT) for some particular use cases
and in evaluating whether or not corresponding SUTs executions conform to
some ...

The Oxford Handbook of Deaf Studies, Language, and Education

"In this follow-up volume, Marschark and Spencer have amassed a collection that is impressive in breadth and depth. The research presented here documents the sea-change observable in classrooms and schools for deaf children and is reflected in the variety of chapters...A masterful companion to the original volume." C. Tane Akamatsu, Psychologist, Toronto District School Board --Book Jacket.

Relations of Cognition and Reading in Children with Cochlear Implants James et
al. ... intelligence accounted for a significant proportion of the variance in
children's reading scores, as well as their spoken ... They noted, for example, that
for some children with implants, tests of vocabulary comprehension may tap
speechreading rather than auditory language skills (p ... that the amount of
language input and the size of early vocabulary influences the organization of
semantic categories.

Assessment and Intervention Issues Across the Life Span

This volume evolved from the second life span development conference held at Southern Illinois University entitled "Assessment and Intervention Across the Lifespan." Providing an overview and consideration of important directions for research in areas of assessment and intervention across the lifespan, the presentations covered a variety of topic areas including social ecology, cultural diversity, attitudes about aging, as well as attention, visual, and linguistic skills. This volume consists of chapters based on the conference presentations as well as additional chapters by experts in related specialty areas discussing attachment theory, learning disabilities, and phonological processing. The second conference and volume continue the work of the first conference and its associated earlier volume. The chapters cover important interactions between assessment and intervention for each major developmental period; several emphasize the importance of early assessment and intervention. A common theme found throughout is the critical connection between basic research and practice. The editors hope this book will prove useful not only to researchers, but also to practitioners in related disciplines working with individuals of all ages.

Thus, intervention provided in the first 3 years had effects on heavier LBW
premature infants' IQ and verbal performance at age 5 years that were not
observed for lighter LBW babies. Moreover, the data suggest that overall, the
intervention ...

Berbagi Rahasia Usaha di Masa Sulit: Menangguk Rupiah dari Sampah

Peraturan-peraturan itu tentunya menimbulkan beban berat bagi pelaksanaan
kegiatan usaha di daerah, khususnya Usaha Kecil dan Menengah (UKM).
Padahal UKM merupakan salah satu tulang punggung perekonomian nasional
yang ...

The Design of a Prototype Lentil Harvester for Small Farms

Although lentil is a valuable source of protein in human diet, and its straw is a highly valued animal feed, its production in West Asia and North Africa is limited, mainly due to problems associated with harvesting. Mechanical harvesting has not been successful because: 1)Seed and leaf shattering occurs when plants are mature; 2) low cutting heights are required since lentils tend to be short (only 20-30 cm tall) with pods borne close to the ground; 3) lentils are usually grown in marginal stony fields where stones cause damage to essential parts of harvesters; and 4) uneven ripening. Hand harvesting cause minimal losses, but it is labor intensive and labor is becoming increasingly scarce.--The objective of this study was to design and test a prototype lentil harvester for small farms with focus on the cutting/feeding mechanism. A hand held preliminary system was first designed and tested and the results were then used to develop a self-propelled prototype, which cuts and collects whole plants without threshing. Very low (5 cm average) and clean cut with negligible seed and leaf losses were achieved under various field conditions (stony, weedy and weeded), wide range of plant moisture (54.7% to 8.7% wet basis) and operation speeds (up to maximum design speed of 4 Km/h). The results were superior to combine and forage harvesters while comparable to--typical hand harvesting (hand pulling). Nevertheless, the ability of the prototype to harvest very dry crop with minimal losses allows farmers to delay harvest until most of the lentils is mature, thus overcoming the the problem of uneven maturity.

--The objective of this study was to design and test a prototype lentil harvester for small farms with focus on the cutting/feeding mechanism.

Mixed-signal Multimode Radio Software/hardware Development Platform

Radio frequency power amplifiers (PAs) are the most challenging part of the design of radio systems since they dictate the overall system's performance in terms of power efficiency and distortion generation. The performance is further challenged by modern modulation schemes which are characterized by highly varying signal envelopes. In order to meet the spectrum mask requirements, PAs are usually operated at high power back-off to ensure linearity, at the cost of efficiency. To tackle this issue, many efficiency enhancement techniques have been presented in the literature. In fact, these techniques do increase the PA power efficiency at back-off, however, efficiency enhancement techniques do not ensure the linearity of the PA. Furthermore, these techniques may lead to additional distortion. On the other hand, several linearization techniques have been developed to mitigate the PA nonlinearity problem and allow the PA to operate at less back-off. Digital Pre-Distortion (DPD) technique is gaining more attention, as compared to other linearization techniques, thanks to its simple concept and advancements in digital signal processors (DSP) and signal converters. DPD technique consists of introducing a nonlinear function before the PA so that the overall cascaded system behaves linearly. It was clear from the literature that this technique showed good performance. Yet, it has primarily been validated using commercial test equipment, which has good capabilities, and far from the real world environment in which this technique would be implemented. Indeed, DPDs would need to be implemented in signal processors characterised by limited resources and computational accuracy. This thesis presents an implementation of several DPD models, namely look-up table (LUT), memoryless polynomial and memory polynomial (MP), on a field programmable gate array (FPGA).

Radio frequency power amplifiers (PAs) are the most challenging part of the design of radio systems since they dictate the overall system's performance in terms of power efficiency and distortion generation.

Pericardial Processing: Challenges, Outcomes and Future Prospects