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This IBM® Redbooks® publication focuses on gathering the correct technical information, and laying out simple guidance for optimizing code performance on IBM POWER8® processor-based systems that run the IBM AIX®, IBM i, or Linux operating systems. There is straightforward performance optimization that can be performed with a minimum of effort and without extensive previous experience or in-depth knowledge. The POWER8 processor contains many new and important performance features, such as support for eight hardware threads in each core and support for transactional memory. The POWER8 processor is a strict superset of the IBM POWER7+TM processor, and so all of the performance features of the POWER7+ processor, such as multiple page sizes, also appear in the POWER8 processor. Much of the technical information and guidance for optimizing performance on POWER8 processors that is presented in this guide also applies to POWER7+ and earlier processors, except where the guide explicitly indicates that a feature is new in the POWER8 processor. This guide strives to focus on optimizations that tend to be positive across a broad set of IBM POWER® processor chips and systems. Specific guidance is given for the POWER8 processor; however, the general guidance is applicable to the IBM POWER7+, IBM POWER7®, IBM POWER6®, IBM POWER5, and even to earlier processors. This guide is directed at personnel who are responsible for performing migration and implementation activities on POWER8 processor-based systems. This includes system administrators, system architects, network administrators, information architects, and database administrators (DBAs).

"Nine year old Ruby and her ten year old brother Henry are having the worst summer of their life until a strange older man with a curious cello case rents a room in their house. Before long, Ruby and Henry are engaged in a life or death struggle to defeat three witches with a dastardly plan, and they learn some important lessons about family along the way." --

This IBM® Redbooks® publication provides advice and technical information about optimizing and tuning application code to run on systems that are based on the IBM POWER7® and POWER7+TM processors. This advice is drawn from application optimization efforts across many different types of code that runs under the IBM AIX® and Linux operating systems, focusing on the more pervasive performance opportunities that are identified, and how to capitalize on them. The technical information was developed by a set of domain experts at IBM. The focus of this book is to gather the right technical information, and lay out simple guidance for optimizing code performance on the IBM POWER7 and POWER7+ systems that run the AIX or Linux operating systems. This book contains a large amount of straightforward performance optimization that can be performed with minimal effort and without previous experience or in-depth knowledge. This optimization work can: Improve the performance of the application that is being optimized for the POWER7 system Carry over improvements to systems that are based on related processor chips Improve performance on other platforms The audience of this book is those personnel who are responsible for performing migration and implementation activities on IBM POWER7-based servers, which includes system administrators, system architects, network administrators, information architects, and database administrators (DBAs).

This IBM® Redbooks® publication provides advice and technical information about optimizing and tuning application code to run on systems that are based on the IBM POWER7® and POWER7+ processors. This advice is drawn from application optimization efforts across many different types of code that runs under the IBM AIX® and Linux operating systems, focusing on the more pervasive performance opportunities that are identified, and how to capitalize on them. The technical information was developed by a set of domain experts at IBM. The focus of this book is to gather the right technical information, and lay out simple guidance for optimizing code performance on the IBM POWER7 and POWER7+ systems that run the AIX or Linux operating systems. This book contains a large amount of straightforward performance optimization that can be performed with minimal effort and without previous experience or in-depth knowledge. This optimization work can: Improve the performance of the application that is being optimized for the POWER7 system Carry over improvements to systems that are based on related processor chips Improve performance on other platforms The audience of this book is those personnel who are responsible for performing migration and implementation activities on IBM POWER7-based servers, which includes system administrators, system architects, network administrators, information architects, and database administrators (DBAs).

Work zones are an essential component of any state transportation agency's construction and maintenance operations. As such, agencies apply numerous practices in order to keep their workers safe during construction operations. These strategies typically fall under the following categories: work zone traffic control (e.g., arrow boards, variable message signs, drums, etc.), work zone operational strategies (e.g., reduced speed limits in work zones), and personal protective equipment for highway workers. With regard to the last category, workers are typically provided with varying combinations of helmets, reflective vests, reflective pants, etc. to wear while on the job site depending on the location of the job (e.g., freeway vs. local road) and other conditions (e.g., whether or not nighttime work will take place). The Ohio Department of Transportation (ODOT) recently invested in several more advanced items to improve worker safety (and also traveler safety, by hopefully reducing the number of crashes overall). Specifically, ODOT invested in Type 2 and 3 safety vests, halo lights, and reflectors on the back of dump trucks. These materials were expected to provide the maximum safety effectiveness in terms of conspicuity of workers and work zone equipment. However, while these items separately are known to improve safety, there was concern that together they may not be as effective. This project sought to determine the effectiveness of each piece of safety equipment, collectively and individually, and determine if there are better methods for ensuring the safety of highway workers during both night and daytime operations. In order to accomplish this goal, the research team carried out several major tasks. First, they collected measurements of optical (material measurements under a selected region of the electromagnetic spectra) and photometric (luminous measurements under selected lighting environments) properties of various safety items (e.g., vests, lights, etc.) in order to prepare for simulation-based evaluation in the next step. The simulation-based evaluation used measurements from the first task to create realistic models of retroreflective vests, lights, and other safety equipment in virtual scenarios. These items were then placed in different virtual work zone environments, each of which had different conditions in terms of work zone set up, traffic control, vests worn by workers, time of day/ambient lighting, etc. Through an eye-tracking experiment measuring participants gaze on workers in different virtual work zone scenarios and a driving simulator experiment in which participants drove through virtual work zones and were asked follow up questions on worker conspicuity, subjective and objective measures of worker visibility were obtained. Conclusions from the simulation experiment (e.g., this type of vest made workers less visible at night, the presence of reflective tape had a negative effect on worker visibility in some cases, etc.) were then used to inform the development of work zone scenarios to test in a field experiment (a portion of the project that is not yet complete at the time of this draft report). Finally, results from each of the aforementioned steps were used to update a standard operations document on what types of safety equipment to use depending on specific work zone characteristics.

The poet, lyricist, and translator Julian Tuwim (1894 – 1953) was a major figure in Polish literature. In 1918, he was one of the co-founders of the Skamander group of experimental poets who broke with the nationalist aim of poetry to focus instead on the common people. Tuwim’s work was wide-ranging and included writing songs for the cabaret as well as beloved children’s verses. In 1935, he was awarded the Golden Laurel by the Polish Academy of Literature.

INLA stands for Integrated Nested Laplace Approximations, which is a new method for fitting a broad class of Bayesian regression models. No samples of the posterior marginal distributions need to be drawn using INLA, so it is a computationally convenient alternative to Markov chain Monte Carlo (MCMC), the standard tool for Bayesian inference. Bayesian Regression Modeling with INLA covers a wide range of modern regression models and focuses on the INLA technique for building Bayesian models using real-world data and assessing their validity. A key theme throughout the book is that it makes sense to demonstrate the interplay of theory and practice with reproducible studies. Complete R commands are provided for each example, and a supporting website holds all of the data described in the book. An R package including the data and additional functions in the book is available to download. The book is aimed at readers who have a basic knowledge of statistical theory and Bayesian methodology. It gets readers up to date on the latest in Bayesian inference using INLA and prepares them for sophisticated, real-world work. Xiaofeng Wang is Professor of Medicine and Biostatistics at the Cleveland Clinic Lerner College of Medicine of Case Western Reserve University and a Full Staff in the Department of Quantitative Health Sciences at Cleveland Clinic. Yu Ryan Yue is Associate Professor of Statistics in the Paul H. Chook Department of Information Systems and Statistics at Baruch College, The City University of New York. Julian J. Faraway is Professor of Statistics in the Department of Mathematical Sciences at the University of Bath.

This IBM® Redbooks® publication describes how IBM PureApplicationTM System supports the creation of virtual systems and virtual applications. PureApplication System does so using a pattern model that enables you to take advantage of predefined, pre-configured, and proven middleware topologies and deployments. This book also presents an abstraction level that focuses on functional capabilities and applications, completely encapsulating the underlying middleware. It describes in detail the model and the associated frameworks in PureApplication System, as well as a methodology and approach toward designing and implementing a custom pattern model. This book shows concrete implementation examples that you can use when creating your own pattern model, paired with a collection of leading practices. This IBM Redbooks publication gives critical guidance to, and serves as a reference for, independent software vendors (ISVs) who want to create patterns for their packaged applications on PureApplication System. Clients who want to extend and enhance their existing patterns can also use this book.