A comprehensive treatment of statistical applications for solving real-world environmental problems A host of complex problems face today's earth science community, such as evaluating the supply of remaining non-renewable energy resources, assessing the impact of people on the environment, understanding climate change, and managing the use of water. Proper collection and analysis of data using statistical techniques contributes significantly toward the solution of these problems. Statistics for Earth and Environmental Scientists presents important statistical concepts through data analytic tools and shows readers how to apply them to real-world problems. The authors present several different statistical approaches to the environmental sciences, including Bayesian and nonparametric methodologies. The book begins with an introduction to types of data, evaluation of data, modeling and estimation, random variation, and sampling—all of which are explored through case studies that use real data from earth science applications. Subsequent chapters focus on principles of modeling and the key methods and techniques for analyzing scientific data, including: Interval estimation and Methods for analyzinghypothesis testing of means time series data Spatial statistics Multivariate analysis Discrete distributions Experimental design Most statistical models are introduced by concept and application, given as equations, and then accompanied by heuristic justification rather than a formal proof. Data analysis, model building, and statistical inference are stressed throughout, and readers are encouraged to collect their own data to incorporate into the exercises at the end of each chapter. Most data sets, graphs, and analyses are computed using R, but can be worked with using any statistical computing software. A related website features additional data sets, answers to selected exercises, and R code for the book's examples. Statistics for Earth and Environmental Scientists is an excellent book for courses on quantitative methods in geology, geography, natural resources, and environmental sciences at the upper-undergraduate and graduate levels. It is also a valuable reference for earth scientists, geologists, hydrologists, and environmental statisticians who collect and analyze data in their everyday work.
This book is a guide to the management and use of formulated feeds in semi-intensive and intensive fish and shrimp culture. Feeds represent the major variable operating costs in intensive aquaculture, and optimizing their use represents an opportunity for many farmers to increase or maintain the profitability of their enterprise. Fish farmers have an ever widening range of feed types and feeding methods from which to choose, and must carefully monitor the use of feeds in order to control costs. This book includes details of those biological, environmental, and nutritional factors which influence the feeding, growth and survival of fish and shrimp, and of which some understanding is essential in the establishment of effective feeding practices. Details are given of feed handling and storage methods, and the various methods available for feeding fish are described and their relative methods appraised. Methods for selection of the appropriate feed types, ration sizes, and feeding schedules are included, and details given of how to measure performance of feeding programs. Throughout the text reference is made to key areas of current research, and examples are drawn from different sectors of the industry to illustrate the general principles of feed management.
The last 20 years has seen a rapid increase in infectious diseases, particularly those that are termed "emerging diseases" such as SARS, "neglected diseases" such as malaria and those that are deemed biothreats such as anthrax. It is well-recognized that the most effective modality for preventing infectious diseases is vaccination. This book provides researchers with a better understanding of what is currently known about these diseases, including whether there is a vaccine available or under development. It also informs readers of the key issues in development of a vaccine for each disease. - Provides a comprehensive treatise of the agents that are responsible for emerging and neglected diseases and those that can be used as biothreats - Includes the processes such as the vaccine development pathway, vaccine manufacturing and regulatory issues that are critical to the generation of these vaccines to the marketplace - Each chapter will include a map of the world showing where that particular disease is naturally found
In Jethro and the Jews, Beatrice J. W. Lawrence examines rabbinic texts that address the biblical character of Jethro, a Midianite priest, Moses’ advisor and father-in-law, and the creator of the system of Jewish jurisprudence. Lawrence explores biblical interpretations in Midrash, Targum and Talmud, revealing a spectrum of responses to the presence of a man who straddles the line between insider and outsider. Ranging from character assassination to valorization of Jethro as a convert, these interpretive strategies reveal him to be a locus of anxiety for the rabbis concerning conversion, community boundaries, intermarriage, and non-Jews.
Because radiation is a central curative and palliative therapy for many patients, it is essential to have safe and efficient systems for planning and delivering radiation therapy. Factors such as rapid technological advances, financial reorganization, an aging population, and evolving societal expectations, however, may be compromising our ability
The most important example of intravascular infection is infective endocarditis (IE), a common and serious disorder in man. In the past, these infections were uniformly fatal, but since the development of potent antimicrobial agents, bac teriological cure has become practical and predictable. So, for a while, it seemed that intravascular infection would diminish in importance and be relegated to the stockpile of illnesses which physicians, one or two generations earlier, used to see frequently. In recent years, however, spectacular technological advances (cardiac surgery, intravascular devices, hemodialysis), accompanied by profound social deterioration (intravenous drug usage), have provided new breeding grounds for the development of these infections. So it is that a large percentage of intravascular infections may be looked upon today as one of the diseases of medical progress and social evolution. This "progress," however, has not only contributed to the encouragement of the disease; there is another side to the coin: the same technological advances that have served to increase the frequency of infection (e. g. , intravascular plastic catheters) have also led to the first simple, easily reproducible laboratory animal model for the study of the disease, thus advancing our understanding of the prophylaxis, treatment, and general biology of these infections (Figures 1 and 2). Similarly, whereas the insertion of prosthetic heart valves has created a new group of patients with endocarditis, these same surgical techniques are lifesaving to patients with endocarditis whose aortic valves have perforated.
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