Analysis and Control of Age-Dependent Population Dynamics

Analysis and Control of Age-Dependent Population Dynamics
Author: S. Anita
Publisher: Springer Science & Business Media
Total Pages: 207
Release: 2013-04-17
Genre: Mathematics
ISBN: 9401594368
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The material of the present book is an extension of a graduate course given by the author at the University "Al.I. Cuza" Iasi and is intended for stu dents and researchers interested in the applications of optimal control and in mathematical biology. Age is one of the most important parameters in the evolution of a bi ological population. Even if for a very long period age structure has been considered only in demography, nowadays it is fundamental in epidemiology and ecology too. This is the first book devoted to the control of continuous age structured populationdynamics.It focuses on the basic properties ofthe solutions and on the control of age structured population dynamics with or without diffusion. The main goal of this work is to familiarize the reader with the most important problems, approaches and results in the mathematical theory of age-dependent models. Special attention is given to optimal harvesting and to exact controllability problems, which are very important from the econom ical or ecological points of view. We use some new concepts and techniques in modern control theory such as Clarke's generalized gradient, Ekeland's variational principle, and Carleman estimates. The methods and techniques we use can be applied to other control problems.

The Future of the Public's Health in the 21st Century

The Future of the Public's Health in the 21st Century
Author: Institute of Medicine
Publisher: National Academies Press
Total Pages: 536
Release: 2003-02-01
Genre: Medical
ISBN: 0309133181
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The anthrax incidents following the 9/11 terrorist attacks put the spotlight on the nation's public health agencies, placing it under an unprecedented scrutiny that added new dimensions to the complex issues considered in this report. The Future of the Public's Health in the 21st Century reaffirms the vision of Healthy People 2010, and outlines a systems approach to assuring the nation's health in practice, research, and policy. This approach focuses on joining the unique resources and perspectives of diverse sectors and entities and challenges these groups to work in a concerted, strategic way to promote and protect the public's health. Focusing on diverse partnerships as the framework for public health, the book discusses: The need for a shift from an individual to a population-based approach in practice, research, policy, and community engagement. The status of the governmental public health infrastructure and what needs to be improved, including its interface with the health care delivery system. The roles nongovernment actors, such as academia, business, local communities and the media can play in creating a healthy nation. Providing an accessible analysis, this book will be important to public health policy-makers and practitioners, business and community leaders, health advocates, educators and journalists.

Population System Control

Population System Control
Author: Jian Song
Publisher: Springer
Total Pages: 314
Release: 1988
Genre: Population
ISBN:
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Treating population growth as a dynamic process, this book considers quantitative studies of population in the framework of cybernetics, and describes some rules and characteristics of the population systems under control functions (population policy), thus establishing a scientific basis for population control and family planning. Particular features of this book are the combination of qualitative with quantitative studies, the combination of natural and social sciences and the combination of theory with practice. Differing from the demographic approach, this book uses the methods of systems science to study social systems, thereby putting forward a number of new concepts and theories, such as population system control model, population stability theory and population system optimal control. The book illustrates how the systems framework, systems methodology and systems theory represent a powerful scientific approach to some practical problems. The reader may also find here some new results reached by applying such methods to the study of population problems. The book in fact contains many new research findings that have not been published previously. The first author is Chairman of the State Science and Technology Commission of the People's Republic of China as well as Professor at Qinghua University. Prof. Song received the Albert Einstein Award from the International Association for Mathematical Modelling in August 1987. The second author is Deputy Director of the Beijing Institute of Information and Control. The book will be of great interest to population theorists and systems scientists, in particular as an account of work being done currently in China in this field.

A Population-Based Policy and Systems Change Approach to Prevent and Control Hypertension

A Population-Based Policy and Systems Change Approach to Prevent and Control Hypertension
Author: Institute of Medicine
Publisher: National Academies Press
Total Pages: 236
Release: 2010-08-13
Genre: Medical
ISBN: 030914809X
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Hypertension is one of the leading causes of death in the United States, affecting nearly one in three Americans. It is prevalent in adults and endemic in the older adult population. Hypertension is a major contributor to cardiovascular morbidity and disability. Although there is a simple test to diagnose hypertension and relatively inexpensive drugs to treat it, the disease is often undiagnosed and uncontrolled. A Population-Based Policy and Systems Change Approach to the Prevention and Control Hypertension identifies a small set of high-priority areas in which public health officials can focus their efforts to accelerate progress in hypertension reduction and control. It offers several recommendations that embody a population-based approach grounded in the principles of measurement, system change, and accountability. The recommendations are designed to shift current hypertension reduction strategies from an individual-based approach to a population-based approach. They are also designed to improve the quality of care provided to individuals with hypertension and to strengthen the Center for Disease Control and Prevention's leadership in seeking a reduction in the sodium intake in the American diet to meet dietary guidelines. The book is an important resource for federal public health officials and organizations, especially the Center for Disease Control and Prevention, as well as medical professionals and community health workers.

The Limits to Growth

The Limits to Growth
Author: Donella H. Meadows
Publisher: Universe Pub
Total Pages: 0
Release: 1972
Genre: Economic development.
ISBN: 9780876632222
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Examines the factors which limit human economic and population growth and outlines the steps necessary for achieving a balance between population and production. Bibliogs

State and Local Population Projections

State and Local Population Projections
Author: Stanley K. Smith
Publisher: Springer Science & Business Media
Total Pages: 433
Release: 2005-12-21
Genre: Social Science
ISBN: 0306473720
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The initial plans for this book sprang from a late-afternoon conversation in a hotel bar. All three authors were attending the 1996 meeting of the Population As- ciation of America in New Orleans. While nursing drinks and expounding on a variety of topics, we began talking about our current research projects. It so happened that all three of us had been entertaining the notion of writing a book on state and local population projections. Recognizing the enormity of the project for a single author, we quickly decided to collaborate. Had we not decided to work together, it is unlikely that this book ever would have been written. The last comprehensive treatment of state and local population projections was Don Pittenger’s excellent work Projecting State and Local Populations (1976). Many changes affecting the production of population projections have occurred since that time. Technological changes have led to vast increases in computing power, new data sources, the development of GIS, and the creation of the Internet. The procedures for applying a number of projection methods have changed considerably, and several completely new methods have been developed.

Using Science to Improve the BLM Wild Horse and Burro Program

Using Science to Improve the BLM Wild Horse and Burro Program
Author: National Research Council
Publisher: National Academies Press
Total Pages: 399
Release: 2013-10-04
Genre: Technology & Engineering
ISBN: 0309264944
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Using Science to Improve the BLM Wild Horse and Burro Program: A Way Forward reviews the science that underpins the Bureau of Land Management's oversight of free-ranging horses and burros on federal public lands in the western United States, concluding that constructive changes could be implemented. The Wild Horse and Burro Program has not used scientifically rigorous methods to estimate the population sizes of horses and burros, to model the effects of management actions on the animals, or to assess the availability and use of forage on rangelands. Evidence suggests that horse populations are growing by 15 to 20 percent each year, a level that is unsustainable for maintaining healthy horse populations as well as healthy ecosystems. Promising fertility-control methods are available to help limit this population growth, however. In addition, science-based methods exist for improving population estimates, predicting the effects of management practices in order to maintain genetically diverse, healthy populations, and estimating the productivity of rangelands. Greater transparency in how science-based methods are used to inform management decisions may help increase public confidence in the Wild Horse and Burro Program.

Improving Health Research on Small Populations

Improving Health Research on Small Populations
Author: National Academies of Sciences, Engineering, and Medicine
Publisher: National Academies Press
Total Pages: 151
Release: 2018-08-02
Genre: Medical
ISBN: 0309476097
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The increasing diversity of population of the United States presents many challenges to conducting health research that is representative and informative. Dispersion and accessibility issues can increase logistical costs; populations for which it is difficult to obtain adequate sample size are also likely to be expensive to study. Hence, even if it is technically feasible to study a small population, it may not be easy to obtain the funding to do so. In order to address the issues associated with improving health research of small populations, the National Academies of Sciences, Engineering, and Medicine convened a workshop in January 2018. Participants considered ways of addressing the challenges of conducting epidemiological studies or intervention research with small population groups, including alternative study designs, innovative methodologies for data collection, and innovative statistical techniques for analysis.