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Worse Comes to Worst: Bananas and Panama Disease—When Plant and Pathogen Clones Meet
This article deals with: Bananas: their origin and global rollout; genetic diversity of Fusarium oxysporum f.sp. cubense, the causal agent of Panama Disease; Panama Disease: history repeats itself; tropical race 4, a single pathogen clone, threatens global banana production; strategies for sustainable Panama Disease management.
Journal Article
Issues with implementing a high-quality lung cancer screening program
After a comprehensive review of the evidence, the United States Preventive Services Task Force recently endorsed screening with low-dose computed tomography as an early detection approach that has the potential to significantly reduce deaths due to lung cancer. Prudent implementation of lung cancer screening as a high-quality preventive health service is a complex challenge. The clinical evaluation and management of high-risk cohorts in the absence of symptoms mandates an approach that differs significantly from that of symptom-detected lung cancer. As with other cancer screenings, it is essential to provide to informed at-risk individuals a safe, high-quality, cost-effective, and accessible service. In this review, the components of a successful screening program are discussed as we begin to disseminate lung cancer screening as a national resource to improve outcomes with this lethal cancer. This information about lung cancer screening will assist clinicians with communications about the potential benefits and harms of this service for high-risk individuals considering participation in the screening process.
Journal Article
Meta-Regression Analysis in Economics and Business
The purpose of this book is to introduce novice researchers to the tools of meta-analysis and meta-regression analysis and to summarize the state of the art for existing practitioners. Meta-regression analysis addresses the rising \"Tower of Babel\" that current economics and business research has become. Meta-analysis is the statistical analysis of previously published, or reported, research findings on a given hypothesis, empirical effect, phenomenon, or policy intervention. It is a systematic review of all the relevant scientific knowledge on a specific subject and is an essential part of the evidence-based practice movement in medicine, education and the social sciences. However, research in economics and business is often fundamentally different from what is found in the sciences and thereby requires different methods for its synthesis-meta-regression analysis. This book develops, summarizes, and applies these meta-analytic methods.
eBook
Comparing Media Systems
Building on a survey of media institutions in eighteen West European and North American democracies, Hallin and Mancini identify the principal dimensions of variation in media systems and the political variables which have shaped their evolution. They go on to identify three major models of media system development (the Polarized Pluralist, Democratic Corporatist and Liberal models) to explain why the media have played a different role in politics in each of these systems, and to explore the forces of change that are currently transforming them. It provides a key theoretical statement about the relation between media and political systems, a key statement about the methodology of comparative analysis in political communication and a clear overview of the variety of media institutions that have developed in the West, understood within their political and historical context.
eBook
Modelling of strategies for genetic control of scrapie in sheep: The importance of population structure
Scrapie is a transmissible spongiform encephalopathy in sheep and an example of a disease that may be controlled through breeding for disease resistance. Member states of the European Union have introduced strategies for breeding against scrapie based on the selection of genetically resistant breeding rams. An ambitious strategy adopted in The Netherlands consisted of selecting resistant rams for breeding throughout both breeding and production sectors. Mathematical modelling of the effect of a breeding program on the spreading capacity of scrapie in a national flock is needed for making assessments on how long a breeding strategy needs to be maintained to achieve disease control. Here we describe such a model applied to the Dutch situation, with the use of data on the genetic content of the Dutch sheep population as well as on scrapie occurrence in this population. We show that the time needed for obtaining scrapie control depends crucially on two parameters measuring sheep population structure: the between-flock heterogeneity in genotype frequencies, and the heterogeneity of mixing (contact rates) between sheep flocks. Estimating the first parameter from Dutch genetic survey data and assuming scenario values for the second one, enables model prediction of the time needed to achieve scrapie control in The Netherlands.
Journal Article
Strikes around the world, 1968-2005
This unique study draws on the experience of fifteen countries around the world - South Africa, Argentina, Canada, Mexico, United States, Korea, Australia, New Zealand, Belgium, Denmark, France, Germany, the Netherlands, Sweden and the United Kingdom. Covering the high and low points of strike activity over the period 1968-2005, the study shows continuing evidence of the durability, adaptability and necessity of the strike.
eBook
Doing Qualitative Research
Naturalistic inquiry is about studying people in everyday circumstances using ordinary means. It strives to blend in-respecting people in their daily lives, taking their actions and experiences seriously while not interfering-in order to come to theoretical understanding. This textbook offers guidance, combining thoughtful reflection with practical tips. It is written for undergraduate and graduate students in social science; for practitioners in social work, healthcare, policy advice, and organizational consultancy; and forall who have a genuine interest in society and its members.
eBook