Almost all bodily functions are dependent on the functioning of the autonomic nervous system - from the cardiovascular system, the gastrointestinal tract, the evacuative and sexual organs, to the ...regulation of temperature, metabolism and tissue defence. Balanced functioning of this system is an important basis of our life and well-being. This book gives a detailed description of the cellular and integrative organization of the autonomic nervous system, covering both peripheral and central aspects. It brings to light modern neurobiological concepts that allow understanding of why the healthy system runs so smoothly and why its deterioration has such disastrous consequences. This academic reference volume will appeal to advanced undergraduate and graduate students studying the neurobiology of the autonomic nervous system within the various biological and medical sciences and will give access to ideas propagated in psychosomatic and alternative medicines.
With some adaptive, complex networks, the evolution of the network topology and the dynamical processes on the network are equally important and often fundamentally entangled. This book defines the ...scope and direction of some of the most advanced developments in the vast field of complex network science and its applications.
This book explores the missing details of the linear parameter-varying (LPV) system theory that have hindered the formulation of a well established identification framework. It covers the key issues ...from system theory to modeling and identification.
Impulsive and hybrid dynamical systems Haddad, Wassim M; Chellaboina, VijaySekhar; Nersesov, Sergey G
2014., 20140908, 2006, 2006-01-01, Letnik:
15
eBook
This book develops a general analysis and synthesis framework for impulsive and hybrid dynamical systems. Such a framework is imperative for modern complex engineering systems that involve ...interacting continuous-time and discrete-time dynamics with multiple modes of operation that place stringent demands on controller design and require implementation of increasing complexity--whether advanced high-performance tactical fighter aircraft and space vehicles, variable-cycle gas turbine engines, or air and ground transportation systems.
Impulsive and Hybrid Dynamical Systemsgoes beyond similar treatments by developing invariant set stability theorems, partial stability, Lagrange stability, boundedness, ultimate boundedness, dissipativity theory, vector dissipativity theory, energy-based hybrid control, optimal control, disturbance rejection control, and robust control for nonlinear impulsive and hybrid dynamical systems. A major contribution to mathematical system theory and control system theory, this book is written from a system-theoretic point of view with the highest standards of exposition and rigor. It is intended for graduate students, researchers, and practitioners of engineering and applied mathematics as well as computer scientists, physicists, and other scientists who seek a fundamental understanding of the rich dynamical behavior of impulsive and hybrid dynamical systems.
We live in an increasingly interconnected world, with many organizations operating across countries or even continents. To serve their global user base, organizations are replacing their legacy DBMSs ...with cloud-based systems capable of scaling OLTP workloads to millions of users. CockroachDB is a scalable SQL DBMS that was built from the ground up to support these global OLTP workloads while maintaining high availability and strong consistency. Just like its namesake, CockroachDB is resilient to disasters through replication and automatic recovery mechanisms. This paper presents the design of CockroachDB and its novel transaction model that supports consistent geo-distributed transactions on commodity hardware. We describe how CockroachDB replicates and distributes data to achieve fault tolerance and high performance, as well as how its distributed SQL layer automatically scales with the size of the database cluster while providing the standard SQL interface that users expect. Finally, we present a comprehensive performance evaluation and share a couple of case studies of CockroachDB users. We conclude by describing lessons learned while building CockroachDB over the last five years.
BullFrog is a relational DBMS that supports single-step schema migrations --- even those that are backwards incompatible --- without downtime, and without need for advanced warning. When a schema ...migration is submitted, BullFrog initiates a logical switch to the new schema, but physically migrates affected data lazily, as it is accessed by incoming transactions. BullFrog's internal concurrency control algorithms and data structures enable concurrent processing of schema migration operations with post-migration transactions, while ensuring exactly-once migration of all old data into the physical layout required by the new schema. BullFrog is implemented as an open source extension to PostgreSQL. Experiments using this prototype over a TPC-C based workload (supplemented to include schema migrations) show that BullFrog can achieve zero-downtime migration to non-trivial new schemas with near-invisible impact on transaction throughput and latency.
Containing selected papers on the fundamentals and applications of Complexity Science, this multi-disciplinary book presents new approaches for resolving complex issues that cannot be resolved using ...conventional mathematical or software models. Complex Systems problems can occur in a variety of areas such as physical sciences and engineering, the economy, the environment, humanities and social and political sciences. Complexity Science problems, the science of open systems consisting of large numbers of diverse components engaged in rich interaction, can occur in a variety of areas such as physical sciences and engineering, the economy, the environment, humanities and social and political sciences. The global behaviour of these systems emerges from the interaction of constituent components and is unpredictable but not random. The key attribute of Complex Systems is the ability to self-organise and adapt to unpredictable changes in their environment.
Demonstration of ModelarDB Jensen, Søren Kejser; Pedersen, Torben Bach; Thomsen, Christian
Proceedings of the 2019 International Conference on Management of Data,
06/2019
Conference Proceeding
Due to the big amounts of sensor data produced, it is infeasible to store all of the data points collected and practitioners currently hide outliers by storing simple aggregates instead. As a remedy, ...we demonstrate ModelarDB, a model-based Time Series Management System (TSMS) for time series with dimensions and possibly gaps. In this demonstration, participants can ingest data sets from multiple domains and experience how ModelarDB provides fast ingestion and a high compression ratio by adaptively compressing time series using a set of models to accommodate changes in the structure of each time series over time. Models approximate time series within a user-defined error bound (possibly zero). Participants can also experience how the compression ratio can be improved by ingesting correlated time series in groups created by ModelarDB from user-hints. Participants provide these using primitives for describing correlation. Last, participants can execute SQL queries on the ingested data sets and see how the system optimizes queries directly on models.
The text begins with an overview of concepts from system theory. New results are provided on feedback stabilization and smooth control of non-holonomic systems. Control design moves from open-loop ...steering control of an individual vehicle to cooperative control of multiple vehicles, a progression culminating in a decentralized control hierarchy requiring only local feedback information. Novel methods are presented: parameterization for collision avoidance and optimization in path planning, near-optimal control for tracking and regulation of non-holonomic chained systems and matrix-theoretical analysis of cooperativity. These methods generate solutions of guaranteed performance for problems of: optimal and collision-free path planning, near-optimal stabilization of non-holonomic systems, cooperative control of dynamic systems. Examples, simulations and comparative studies add zest to the fundamental issues, illustrate the technical approaches and verify the performance of the final control designs.
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