Solid State Circuits Technologies

The evolution of solid-state circuit technology has a long history within a relatively short period of time. This technology has lead to the modern information society that connects us and tools, a large market, and many types of products and applications. The solid-state circuit technology continuously evolves via breakthroughs and improvements every year. This book is devoted to review and present novel approaches for some of the main issues involved in this exciting and vigorous technology. The book is composed of 22 chapters, written by authors coming from 30 different institutions located in 12 different countries throughout the Americas, Asia and Europe. Thus, reflecting the wide international contribution to the book. The broad range of subjects presented in the book offers a general overview of the main issues in modern solid-state circuit technology. Furthermore, the book offers an in depth analysis on specific subjects for specialists. We believe the book is of great scientific and educational value for many readers. I am profoundly indebted to the support provided by all of those involved in the work. First and foremost I would like to acknowledge and thank the authors who worked hard and generously agreed to share their results and knowledge. Second I would like to express my gratitude to the Intech team that invited me to edit the book and give me their full support and a fruitful experience while working together to combine this book

Development of High Resolution Tools for Investigating Cardiac Arrhythmia Dynamics

Every year 300,000 Americans die due to sudden cardiac death. There are many pathologies, acquired and genetic, that can lead to sudden cardiac death. Regardless of the underlying pathology, death is frequently the result of ventricular tachycardia and/or fibrillation (VT/VF). Despite decades of research, the mechanisms of ventricular arrhythmia initiation and maintenance are still incompletely understood. A contributing factor to this lack of understanding is the limitations of the investigative tools used to study VT/VF. Arrhythmias are organ level phenomena that are governed by cellular interactions and as such, near cellular levels of resolution are needed to tease out their intricacies. They are also behaviors that are not limited by region, but dynamically affect the entirety of the heart. For these reasons, high-resolution methodologies capable of measuring electrophysiology of the whole entirety of the ventricles will play an important role in gaining a complete understanding of the principles that govern ventricular arrhythmia dynamics. They will also be essential in the development of novel therapies for arrhythmia management. In this dissertation, I first present the validation and characterization of a novel capacitive electrode design that overcomes the key limitations faced by modern implantable cardiac devices. I then outline the construction, methodologies, and open-source tools of an improved optical panoramic mapping system for small mammalian cardiac electrophysiology studies. I conclude with a small mammal study of the relationship between action potential duration restitution dynamics and the mechanisms of maintenance in ventricular arrhythmias

Strain-Engineered MOSFETs

This book brings together new developments in the area of strain-engineered MOSFETs using high-mibility substrates such as SIGe, strained-Si, germanium-on-insulator and III-V semiconductors into a single text which will cover the materials aspects, principles, and design of advanced devices, their fabrication and applications. The book presents a full TCAD methodology for strain-engineering in Si CMOS technology involving data flow from process simulation to systematic process variability simulation and generation of SPICE process compact models for manufacturing for yield optimization

Internet of Things-aided Smart Grid: Technologies, Architectures, Applications, Prototypes, and Future Research Directions

Traditional power grids are being transformed into Smart Grids (SGs) to address the issues in existing power system due to uni-directional information flow, energy wastage, growing energy demand, reliability and security. SGs offer bi-directional energy flow between service providers and consumers, involving power generation, transmission, distribution and utilization systems. SGs employ various devices for the monitoring, analysis and control of the grid, deployed at power plants, distribution centers and in consumers' premises in a very large number. Hence, an SG requires connectivity, automation and the tracking of such devices. This is achieved with the help of Internet of Things (IoT). IoT helps SG systems to support various network functions throughout the generation, transmission, distribution and consumption of energy by incorporating IoT devices (such as sensors, actuators and smart meters), as well as by providing the connectivity, automation and tracking for such devices. In this paper, we provide a comprehensive survey on IoT-aided SG systems, which includes the existing architectures, applications and prototypes of IoT-aided SG systems. This survey also highlights the open issues, challenges and future research directions for IoT-aided SG systems

Wildlife infectious disease dynamics in the context of seasonality and bird migration

The thesis contains chapters that elucidate questions with regards to wildlife infectious disease dynamics - avian influenza in particular - and how those dynamics are affected by seasonality and avian migration

Comparing live to recorded music and stories using multiple psychoneuroendocrine and psychological measures

Listening to music brings health benefits, according to an expanding opus of empirical research. Studies to date cover a wide range of music interventions and outcome measures. Music has been applied to healthy participants, as well as clinical populations to target anxiety and pain. But little is known about whether live music is more effective than recorded music as an intervention for these common symptoms. This exploratory study sought answers with the emerging science of saliva analysis, which focuses on biomarkers that indicate stress and immune function. In this case salivary cortisol, alpha-amylase, immunoglobulin-A, interleukin- 1beta, and pH levels were measured. Saliva samples from 50 university students and 23 palliative care and surgical patients were compared before and after each participant listened to a live (ML), audiovisual (MAV) or audio recorded (MA) standardised program of classical music played on a solo violin, viola or cello. Live (SL) or audio (SA) story readings were added as interventions to control for psychosocial variables. Saliva’s non-invasive, repeatable, objective psychoneuroendocrine (PNE) snapshots were supplemented with subjective visual analogue scales for anxiety (VASA) and pain (VASP), and self-report affect scales to rate liking, perceived and felt emotion, and absorption. Participants were also asked for a one-word summary of their listening experience. It was anticipated that ML would reduce anxiety and pain, as well as boost the immune markers, more than MAV and MA, and that music overall would demonstrate stronger benefits than the story readings. No single outcome measure provided sufficient data to draw conclusions, but trends in the melange of both objective and subjective instruments revealed that overall more positive health indicators arose from live music than recorded music, particularly in the clinical settings. Stories were also shown to have some moderating effects on pain and anxiety. This study demonstrated the therapeutic values of music as well as story readings, and the superior benefits of live music and stories compared to audio recordings of the same presentations. The PNE methodology had some limitations, particularly with the clinical population, resulting in gaps in the patients’ biomarker data. Some differential results highlighted the value of using a kaleidoscope of both objective and subjective outcome measures to gain a fuller understanding of the complex cognitive, emotional, neural, hormonal, and biopsychosocial processes involved in music’s beneficial effects

Improving the Performance of Wireless LANs

This book quantifies the key factors of WLAN performance and describes methods for improvement. It provides theoretical background and empirical results for the optimum planning and deployment of indoor WLAN systems, explaining the fundamentals while supplying guidelines for design, modeling, and performance evaluation. It discusses environmental effects on WLAN systems, protocol redesign for routing and MAC, and traffic distribution; examines emerging and future network technologies; and includes radio propagation and site measurements, simulations for various network design scenarios, numerous illustrations, practical examples, and learning aids