Providing complete step-by-step coverage of the 2008 Edexcel GCE Biology specification, Salters-Nuffield Advanced Biology (SNAB) is the official support material for the context-led approach to the specification. Written by the University of York Science Education Group (UYSEG) and Nuffield Curriculum Centre, this Students' Book offers students motivating and relevant content to improve exam performance and ensure students fulfil their full potential. Gives students an in-depth, scientific understanding of the principles covered in each topic, including How Science Works. Broad range of teaching and learning activities helps students develop an understanding of biology concepts and principles. Covers topics that interest students and includes practical and ICT activities, which are supported by SNAB online. Integral scientific, mathematical and key skills are learned and tested throughout. Extension and revision materials included for thorough exam preparation. Check-point questions provide summary-style tasks that help students build up revision notes.

Fingerprints: Analysis and Understanding the Science, Second Edition is a thorough update of Mark Hawthorne's classic written by two professionals with combined experience not only in crime scene investigations but also as court-recognized experts in latent print examination. Designed as a concise text to cover the fundamental techniques and principles of obtaining and analyzing latent fingerprint evidence, the book is laid out and written in an easy to understand format for those front-line professionals collecting and analyzing fingerprint evidence. Over time, the degree of sophistication and education on fingerprints and friction ridge analysis has increased. Ultimately, through scientific study by pioneers in the field, the composition of friction skin soon became evident: that it could be used as a unique identifier of individuals. Now, fingerprints and footprints as unique identifiers-and their use in criminal cases-have become commonplace and an essential component of criminal investigation with most cases involving some component of fingerprint evidence. Divided into two parts, the book begins with the basics of analysis, providing a brief history, systematic methods of identification, fingerprint pattern types and their associated terminologies and current classifications. The second part of the book discusses the identification and presentation of evidence in the courtroom, demonstrating both the traditional, manual method of lifting prints and the newer techniques for automated and live scans. Coverage provides instruction on searching and developing latent prints, storage, and comparison of prints. New to this edition are updated techniques on collecting and preserving fingerprint evidence-including packaging and maintaining chain of custody. More detailed documentation processes, and additional chemical and lifting techniques, are described including use of light sources, latent backing cards and lifting material, casting material, ten print cards, and the enhancement of prints in blood. A discussion of laboratory equipment and comparison tools, the addition of photography techniques, and recent courtroom challenges to fingerprint evidence is also presented. Fingerprints, Second Edition will provide a hands-on, fresh look at the most commonly utilized evidence found at crime scenes: fingerprints. The book will provide law enforcement, crime scene personnel and students just such an opportunity to easily understand and grasp the concepts, and relevant issues, associated with friction skin and fingerprint evidence.

Fingerprints: Analysis and Understanding the Science, Second Edition is a thorough update of Mark Hawthorne's classic written by two professionals with combined experience not only in crime scene investigations but also as court-recognized experts in latent print examination. Designed as a concise text to cover the fundamental techniques and principles of obtaining and analyzing latent fingerprint evidence, the book is laid out and written in an easy to understand format for those front-line professionals collecting and analyzing fingerprint evidence. Over time, the degree of sophistication and education on fingerprints and friction ridge analysis has increased. Ultimately, through scientific study by pioneers in the field, the composition of friction skin soon became evident: that it could be used as a unique identifier of individuals. Now, fingerprints and footprints as unique identifiers-and their use in criminal cases-have become commonplace and an essential component of criminal investigation with most cases involving some component of fingerprint evidence. Divided into two parts, the book begins with the basics of analysis, providing a brief history, systematic methods of identification, fingerprint pattern types and their associated terminologies and current classifications. The second part of the book discusses the identification and presentation of evidence in the courtroom, demonstrating both the traditional, manual method of lifting prints and the newer techniques for automated and live scans. Coverage provides instruction on searching and developing latent prints, storage, and comparison of prints. New to this edition are updated techniques on collecting and preserving fingerprint evidence-including packaging and maintaining chain of custody. More detailed documentation processes, and additional chemical and lifting techniques, are described including use of light sources, latent backing cards and lifting material, casting material, ten print cards, and the enhancement of prints in blood. A discussion of laboratory equipment and comparison tools, the addition of photography techniques, and recent courtroom challenges to fingerprint evidence is also presented. Fingerprints, Second Edition will provide a hands-on, fresh look at the most commonly utilized evidence found at crime scenes: fingerprints. The book will provide law enforcement, crime scene personnel and students just such an opportunity to easily understand and grasp the concepts, and relevant issues, associated with friction skin and fingerprint evidence.

This fully revised edition of Handbook of Pharmaceutical Granulation Technology covers the rapid advances in the science of agglomeration, process control, process modelling, scale-up, emerging particle engineering technologies, along with current regulatory changes presented by some of the prominent scientist and subject matter experts around the globe. Learn from more than 50 global subject matter experts who share their years of experience in areas ranging from drug delivery and pharmaceutical technology to advances in nanotechnology. Every pharmaceutical scientist should own a copy of this fourth edition resource. Key Features: Theoretical discussions covering granulation and engineering perspectives. Covers new advances in expert systems, process modelling and bioavailability Chapters on emerging technologies in particle engineering Updated Current research and developments in granulation technologies

Stated Preference Methods Using R explains how to use stated preference (SP) methods, which are a family of survey methods, to measure people's preferences based on decision making in hypothetical choice situations. Along with giving introductory explanations of the methods, the book collates information on existing R functions and packages as well as those prepared by the authors. It focuses on core SP methods, including contingent valuation (CV), discrete choice experiments (DCEs), and best-worst scaling (BWS). Several example data sets illustrate empirical applications of each method with R. Examples of CV draw on data from well-known environmental valuation studies, such as the Exxon Valdez oil spill in Alaska. To explain DCEs, the authors use synthetic data sets related to food marketing and environmental valuation. The examples illustrating BWS address valuing agro-environmental and food issues. All the example data sets and code are available on the authors' website, CRAN, and R-Forge, allowing readers to easily reproduce working examples. Although the examples focus on agricultural and environmental economics, they provide beginners with a good foundation to apply SP methods in other fields. Statisticians, empirical researchers, and advanced students can use the book to conduct applied research of SP methods in economics and market research. The book is also suitable as a primary text or supplemental reading in an introductory-level, hands-on course.

Objective establishment of the truth is the goal of any good crime scene investigator. This demands a consideration of all evidence available using proven scientific methodologies to establish objective snapshots of the crime. The majority of forensic disciplines shed light on the "who" of a crime, bloodstain pattern analysis is one of the most important disciplines to address "what" happened. Understanding the discipline, its underlying scientific basis, and how best to apply this knowledge is crucial in the investigator's quest for the truth. Internationally known experts in crime scene analysis, Tom Bevel and Ross M. Gardner explore bloodstain pattern analysis in depth, explaining what it is, how it is used, and the practical methodologies employed to achieve defensible results. Bloodstain Pattern Analysis with an Introduction to Crime Scene Reconstruction, Third Edition: Presents a specific and detailed taxonomy of bloodstain pattern characteristics Offers a full-color fold-out Decision Map to guide analysts through the classification process Uses full-color photos and diagrams to illustrate concepts Describes the theory, principles, and methodology for crime scene reconstruction Details proven, applicable scientific methodologies Emphasizes observable and reproducible results to mitigate accusations of subjectivity in evidence and testimony Provides more than 60% new or significantly revised information Offering practical advice and tips for novices and experienced professionals, this book employs clear, lucid, and reasoned scientific arguments to provide the tools to guide and focus any investigative effort. Captain Tom Bevel is a 27-year veteran of the Oklahoma City Police Department, retiring in 1996 as Commander of the Homicide, Robbery, Missing Persons, and Unsolved Homicide units. He is held in high esteem as a qualified expert in crime scene reconstruction and bloodstain pattern analysis in state, federal, and foreign courts. His knowledge and expertise as a crime scene consultant has been sought after in 45 US states and 11 foreign countries. He owns a forensic education and consulting company in his home state of Oklahoma. Ross M. Gardner retired as a Command Sergeant Major and Special Agent in 1999 after serving a total of 24 years in US Army law enforcement. Certified by the International Association for Identification as a Senior Crime Analyst for the past 16 years, Gardner is an active instructor and consultant throughout the United States in crime scene analysis, bloodstain pattern analysis, and crime scene investigation.

Systemic Treatment of Incest is the first book to take as its primary focus the treatment of incest families. The authors, who have spent a total of 25 years working with incest families, believe that therapy can succeed in halting the abuse without dissolving the family unit. The volume's three sections are based on the authors' three stages of therapy: creating a context for change; challenging behaviors, expanding alternatives; and consolidation. First published in 1990. Routledge is an imprint of Taylor & Francis, an informa company.

This book is a thoroughly up-to-date treatment of all the available technologies for biomass conversion. Each chapter looks at the viability and implementation of each technology with examples of existing equipment and plants. In addition, the text addresses the economics of biomass processing. The book could also be used as a supplementary text for senior undergraduate courses on biomass processing. Features: Provides a concise overview of all currently available biomass processing technologies Includes relatively recent technologies such as Biochar Contains numerous industry examples and case studies Covers the science and technology behind biomass processing as well as the economics, including the effect of carbon taxation

Advances in sequencing technology have allowed scientists to study the human genome in greater depth and on a larger scale than ever before - as many as hundreds of millions of short reads in the course of a few days. But what are the best ways to deal with this flood of data? Algorithms for Next-Generation Sequencing is an invaluable tool for students and researchers in bioinformatics and computational biology, biologists seeking to process and manage the data generated by next-generation sequencing, and as a textbook or a self-study resource. In addition to offering an in-depth description of the algorithms for processing sequencing data, it also presents useful case studies describing the applications of this technology.

Using a broad selection of classic and current sources, The Natural History of the Earth probes selected discussions within biology, climatology, geology, and geomorphology and explores a selection of debates about Earth and life history, considering their origins and their present state-of-play.

After outlining the arguments, placing them in an historical context and indicating their significance, the book goes on to deal with specific debates. In the geosphere section, topics covered include geological processes, the bombardment hypothesis, frigid climates and cataclysmic floods, and in the section concerning the biosphere, the topics covered include evolutionary patterns, mass extinctions, patterns in life s history and life environment connections.

Written in a clear and accessible style, this volume will interest Earth and life scientists, physical geographers and any informed person fascinated by long-term Earth history. This accessible volume is illustrated throughout with over fifty informative diagrams, photographs, tables and over 700 references.

Choosing and Using Statistics remains an invaluable guide for students using a computer package to analyse data from research projects and practical class work. The text takes a pragmatic approach to statistics with a strong focus on what is actually needed. There are chapters giving useful advice on the basics of statistics and guidance on the presentation of data. The book is built around a key to selecting the correct statistical test and then gives clear guidance on how to carry out the test and interpret the output from four commonly used computer packages: SPSS, Minitab, Excel, and (new to this edition) the free program, R. Only the basics of formal statistics are described and the emphasis is on jargon-free English but any unfamiliar words can be looked up in the extensive glossary. This new 3 rd edition of Choosing and Using Statistics is a must for all students who use a computer package to apply statistics in practical and project work. Features new to this edition: * Now features information on using the popular free program, R * Uses a simple key and flow chart to help you choose the right statistical test * Aimed at students using statistics for projects and in practical classes * Includes an extensive glossary and key to symbols to explain any statistical jargon * No previous knowledge of statistics is assumed

With more and more interest in how components of biological systems interact, it is important to understand the various aspects of systems biology. Kinetic Modelling in Systems Biology focuses on one of the main pillars in the future development of systems biology. It explores both the methods and applications of kinetic modeling in this emerging field. The book introduces the basic biological cellular network concepts in the context of cellular functioning, explains the main aspects of the Edinburgh Pathway Editor (EPE) software package, and discusses the process of constructing and verifying kinetic models. It presents the features, user interface, and examples of DBSolve as well as the principles of modeling individual enzymes and transporters. The authors describe how to construct kinetic models of intracellular systems on the basis of models of individual enzymes. They also illustrate how to apply the principles of kinetic modeling to collect all available information on the energy metabolism of whole organelles, construct a kinetic model, and predict the response of the organelle to changes in external conditions. The final chapter focuses on applications of kinetic modeling in biotechnology and biomedicine. Encouraging readers to think about future challenges, this book will help them understand the kinetic modeling approach and how to apply it to solve real-life problems. Downloadable Resources FeaturesExtensively used throughout the text for pathway visualization and illustration, the EPE software is available on the accompanying downloadable resources. The downloadable resources also include pathway diagrams in several graphical formats, DBSolve installation with examples, and all models from the book with dynamic visualization of simulation results, allowing readers to perform in silico simulations and use the models as templates for further applications.

Crime and Intelligence Analysis: An Integrated Real-Time Approach, 2nd Edition, covers everything crime analysts and tactical analysts need to know to be successful. Providing an overview of the criminal justice system as well as the more fundamental areas of crime analysis, the book enables students and law enforcement personnel to gain a better understanding of criminal behavior, learn the basics of conducting temporal analysis of crime patterns, use spatial analysis to better understand crime, apply research methods to crime analysis, and more successfully evaluate data and information to help predict criminal offending and solve criminal cases. A new chapter provides expert advice about terrorist threats and threat assessment. Criminal justice and police academy students, as well as civilians, sworn officers, and administrators, can build the skills to be credible crime analysts who play a critical role in the daily operations of law enforcement.

This book covers recent research on the COVID-19 pandemic. It includes the analysis, implementation, usage, and proposed ideas and models with architecture to handle the COVID-19 outbreak. Using advanced technologies such as artificial intelligence (AI) and machine learning (ML), techniques for data analysis, this book will be helpful to mitigate exposure and ensure public health. We know prevention is better than cure, so by using several ML techniques, researchers can try to predict the disease in its early stage and develop more effective medications and treatments. Computational technologies in areas like AI, ML, Internet of Things (IoT), and drone technologies underlie a range of applications that can be developed and utilized for this purpose. Because in most cases there is no one solution to stop the spreading of pandemic diseases, and the integration of several tools and tactics are needed. Many successful applications of AI, ML, IoT, and drone technologies already exist, including systems that analyze past data to predict and conclude some useful information for controlling the spread of COVID-19 infections using minimum resources. The AI and ML approach can be helpful to design different models to give a predictive solution for mitigating infection and preventing larger outbreaks. This book: Examines the use of artificial intelligence (AI), machine learning (ML), Internet of Things (IoT), and drone technologies as a helpful predictive solution for controlling infection of COVID-19 Covers recent research related to the COVID-19 pandemic and includes the analysis, implementation, usage, and proposed ideas and models with architecture to handle a pandemic outbreak Examines the performance, implementation, architecture, and techniques of different analytical and statistical models related to COVID-19 Includes different case studies on COVID-19 Dr. Chhabi Rani Panigrahi is Assistant Professor in the Department of Computer Science at Rama Devi Women's University, Bhubaneswar, India. Dr. Bibudhendu Pati is Associate Professor and Head of the Department of Computer Science at Rama Devi Women's University, Bhubaneswar, India. Dr. Mamata Rath is Assistant Professor in the School of Management (Information Technology) at Birla Global University, Bhubaneswar, India. Prof. Rajkumar Buyya is a Redmond Barry Distinguished Professor and Director of the Cloud Computing and Distributed Systems (CLOUDS) Laboratory at the University of Melbourne, Australia.

The field of forensic neuropathology covers such controversial topics as the effects of repeated brain trauma in football players and how babies probably cannot die from being shaken. Jan Leestma is one of the most respected voices in this area. A timely update to his classic reference, Forensic Neuropathology: Third Edition presents an encyclopedic exposition of neuropathological conditions that may have forensic import. Reflecting the latest research, this edition includes expanded sections on multiple trauma, one punch/one hit arterial injuries, and the physiology of respiratory control. It presents new perspectives and rules regarding expert testimony and evidence admissibility occasioned by Daubert and related Supreme Court cases. The book explores how these rulings affect forensic pathologists, neuropathologists, and other potential experts as well as how they interact with the legal system. Several chapters examine the mechanisms and pathophysiology of neuropathological conditions and discuss the biomechanical basis for neurological injury. Where possible, aging and dating methodology is included for various processes. More than 325 updated full-color illustrations complement the text along with diagrams, tables, and figures that illustrate the textual material and can be useful as exhibits in court. An extensive bibliography provides background information and facilitates further research.

Practitioners of forensic medicine have various tools at their disposal to determine cause of death, and today's computed tomography (CT) can provide valuable clues if images are interpreted properly. Forensic Pathology of Fractures and Mechanisms of Injury: Postmortem CT Scanning is a guide for the forensic pathologist who wants to use CT imaging to assist in determining the mechanism of injury that might have contributed to death. Advice from a forensic pathologist using CT images in daily practice Drawn from the author's work at the Victorian Institute of Forensic Medicine, the book presents an overview of his experience with CT in routine casework, provides an appraisal of the literature with respect to fractures, and offers suggestions for the evaluation of CT images by pathologists. He then suggests what reasonable conclusions can be drawn from the images, the circumstances surrounding the death, and an external examination of the deceased. Includes images and case studies Enhanced with hundreds of CT images that clarify the text and case studies to put the material in context, the book begins by discussing classification of injuries and different types of fractures. It then explores the basics of CT. Next, the book gives a head-to-toe catalogue of various injuries and how they are represented on a CT scan. Finally, the book explores the use of CT in difficult forensic cases such as decomposed and burnt remains, falls, child abuse, and transportation incidents. While not intended to make a forensic pathologist an expert at CT image interpretation, the book enables these professionals to become familiar with the technology so they can competently use it in their practice, heightening the accuracy of their cause of death determinations.

This book provides police investigators and homicide detectives with a practical method of analyzing 911 homicide calls to uncover the truth. A structured analysis of 911 homicide calls can directly aid in developing investigative leads, planning interviews and solving cases. Case examples present proven, reliable methods as to when a caller is telling the truth or not. This book lays out a framework to analyze the call to determine truth from fiction. Every member of the investigative team, from call-taker to first responder, investigator, coroner's investigators, and prosecutor, can contribute to the success of investigations through their knowledge of 911 call analysis.

A broad understanding of bone and tooth microstructure is necessary for constructing the biological profile of an individual or individuals within a population. Bone Histology: An Anthropological Perspective brings together authors with extensive experience and expertise in various aspects of hard tissue histology to provide a comprehensive discussion of the application of methods, current theories, and future directions in hard tissue research related to anthropological questions. Topics discussed include: The biology underlying skeletal growth and development leading to adult skeletal morphology Current research in understanding in bone modeling Histological features of dental hard tissues and their utility in biological anthropology Histological analysis as a means to differentiate human from nonhuman bone and for the purpose of age estimation The biomechanics of cortical bone Histotaphonomy and how postmortem microstructural change can be used for taphonomic inquiry The application of light microscopy in paleopathology to classify pathological conditions The histological study of bone tissue of archaeological origin Researchers' access to collections of bone samples with known demographic information Technological aspects of hard tissue histology, including laboratory requirements and high-resolution imaging In most cases, the physical remains of humans available to bioarchaeologists, paleopathologists, and paleontologists are limited to skeletal material. Fortunately, these hard tissues are a storehouse of information about biological processes experienced during the life of an individual. This volume provides an overview of the current state of research and potential applications in anthropology and other fields that employ a histological approach to the study of hard tissues.

Hands-on Data Science for Biologists using Python has been conceptualized to address the massive data handling needs of modern-day biologists. With the advent of high throughput technologies and consequent availability of omics data, biological science has become a data-intensive field. This hands-on textbook has been written with the inception of easing data analysis by providing an interactive, problem-based instructional approach in Python programming language. The book starts with an introduction to Python and steadily delves into scrupulous techniques of data handling, preprocessing, and visualization. The book concludes with machine learning algorithms and their applications in biological data science. Each topic has an intuitive explanation of concepts and is accompanied with biological examples. Features of this book: The book contains standard templates for data analysis using Python, suitable for beginners as well as advanced learners. This book shows working implementations of data handling and machine learning algorithms using real-life biological datasets and problems, such as gene expression analysis; disease prediction; image recognition; SNP association with phenotypes and diseases. Considering the importance of visualization for data interpretation, especially in biological systems, there is a dedicated chapter for the ease of data visualization and plotting. Every chapter is designed to be interactive and is accompanied with Jupyter notebook to prompt readers to practice in their local systems. Other avant-garde component of the book is the inclusion of a machine learning project, wherein various machine learning algorithms are applied for the identification of genes associated with age-related disorders. A systematic understanding of data analysis steps has always been an important element for biological research. This book is a readily accessible resource that can be used as a handbook for data analysis, as well as a platter of standard code templates for building models.

"The prominence of the Bupleurum species cannot be overstated. Across China and Japan, it serves as a main or supplementary ingredient in over two thirds of traditional medications. For over 2000 years, it has been used to treat fevers, intestinal maladies, malaria, and countless other afflictions. Modern research indicates that it may possess anti-tumor qualities, and researchers continue to report its impact on a wide range of ailments, from hepatitis and epilepsy, to irregularity and menopause, as well as psychosis and schizophrenia. Bupleurum Species: Scientific Evaluation and Clinical Applications brings together the work of leading researchers from Asia and Europe who examine this remarkable genus of plants. Providing a comprehensive look at all aspects relevant to the species, this historic volume- q

Neurovirology is an interdisciplinary field representing a melding of virology, clinical neuroscience, molecular pathogenesis, diagnostic virology, molecular biology, and immunology. Neuroviral Infections: RNA Viruses and Retroviruses presents an up-to-date overview of the general principles of infections and major neuroviral infections caused by RNA viruses and retroviruses. It is designed for virologists, specialists in infectious diseases, teachers of virology, and postgraduate students of medicine, virology, neurosciences, and immunology.

Detecting Signals at the Single Molecule Level: Pioneering Achievements in Microscopy Recent advances have led to such remarkable improvements in fluorescence lifetime imaging microscopy's (FLIM) capacity for contrast and sensitivity that researchers can now employ it to detect signals at the single molecule level. FLIM also offers the additional benefit of independence from fluorophore concentration and excitation intensity. Moreover, its unique sensitivity makes it an excellent reporter of conformational changes and of variations in the molecular surroundings of biological molecules. Most of this improvement and discovery have occurred during the past decade, and, to date, information that would benefit a broad range of researchers remains scattered in the literature. Edited by two of the top pioneers in the field, FLIM Microscopy in Biology and Medicine presents the fundamentals of FLIM along with a number of advanced considerations so that a wider audience can appreciate recent and potential improvements that make it such a valuable tool. New Opportunities for Biomedical Researchers... New Challenges for Microscopy Researchers Discussion sections in all the chapters clearly show the challenges for implementing FLIM for various applications. Certain chapters discuss limits on the number of photons required for highly accurate lifetime determinations, as well as the accuracy with which multiple, closely associated lifetime components can reliably be determined. Such considerations are important for the user when he or she is selecting the most advantageous method of FLIM to use for a particular application. While this book provides an introduction for those new to FLIM, it gathers a wealth of material to enhance the work of experts involved in pioneering technological improvements, as well as those research opportunities in this unique and promising area of microscopy.

Focusing on what has been one of the driving forces behind the development of lab-on-a-chip devices, Separation Methods in Microanalytical Systems explores the implementation, realization, and operation of separation techniques and related complex workflows on microfabricated devices. The book details the design, manufacture, and integration of diverse components needed to perform an entire analytical procedure on a single miniaturized device. The content applies to a diversity of disciplines including chemical analysis, biomedical diagnostics, environmental monitoring, and drug discovery. Separation Methods in Microanalytical Systems lays its theoretical background in a way that scientists from varied disciplines can approach. The book describes factors that influence the performance of separation, such as microfluidic handling, sample pre-treatment, and detection. It also conveys fabrication and material issues, design challenges, and practical considerations. Several chapters describe specific separation techniques that are central to micro-Total Analysis Systems (-TAS) as well as novel methods and emerging trends in microchip-based separations. The book also provides an applications overview that supplies a wealth of examples that help scientists put their ideas in perspective with already existing solutions. This multi-authored volume offers different styles, approaches, and opinions for a given problem, reflecting the various angles researchers take to handle the same issues. A one-stop guide for understanding, designing, and working with separation techniques in microanalytical devices, Separation Methods in Microanalytical Systems is a valuable reference for scientists and engineers already preparing to meet the anticipated demand for function-specific chemical separation systems.

The field of pest control research, of increasing importance in a world short of food, has been plagued for many years by a variety of problems, among them (1) the instability (including pesticide resistance) of many control techniques, (2) the continuing need for improved pest management methods to increase world food supplies, and (3) the environmental and social hazards of currently used pesticides. What historical or other factors affect the ability of science to generate useful new technologies to alleviate these three major problems? Are there barriers to cooperation among the different pest control specialists? This book attempts to answer these questions, examining past events and projecting likely impacts on contemporary pest management systems. The authors--sociologists, economists, lawyers, ecologists, political scientists, and pest control scientists--examine the social, economic, political, and ethical factors that are important in shaping pest management systems, as well as developmental patterns that show the importance of these factors in shaping today's systems.