Jasmin D. Winkler

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Fecundity selection, acting on traits enhancing reproductive output, is an important determinant of organismal body size. Due to a unique mode of reproduction, mating success and fecundity are positively correlated with body size in both sexes of male-pregnant Syngnathus pipefish. As male pipefish brood eggs on their tail and egg production in females(More)
The quality of medical journalism has been widely criticized. As part of a larger evaluation study, we analyzed popular press coverage of eight topics selected by the National Institutes of Health for consensus development conferences in 1979 and 1980. Using periodical indexes to identify relevant articles, we analyzed the characteristics of 269 topical(More)
Assessments of medical technologies with respect to their efficacy, safety, and cost-effectiveness are expected to influence clinical practice, but they are often lost in an avalanche of medical information. We developed a conceptual model that may aid understanding of the potential impact on clinical practice of new medical information in general and(More)
Adoption of magnetic resonance imaging (MRI) by individual purchasers and by the health care system will be influenced by many factors. A framework for considering these influences is offered, incorporating them into four major considerations: (1) MRI and its attributes--the technology, its safety and efficacy, and the benefits of acquisition; (2)(More)
Amniote egg and eggshell morphology is a rich source of characters to link aspects of reproductive biology with systematics. Extensive work concerning both anatomy and phylogenetic assignability has been done on fossil bird and dinosaur eggs, but little is known for extant sauropsids. The utility of eggshell characters for phylogenetic analyses is tested(More)
The photoreversible metal-ion complexation behavior of nitroquinolinospiropyranindoline (NQSP) was studied in combination with the selective identification of six different transition-metal ions, Zn(2+), Co(2+), Hg(2+), Cu(2+), Cd(2+), and Ni(2+), in single- and binary-component mixtures via partial least squares discriminant (PLSD) analysis. The(More)
Technological aspects and early clinical experiences are arousing great enthusiasm over magnetic resonance imaging (MRI). However, influences such as regulation, reimbursement, and increasing competition also are playing important roles in determining the diffusion of this new technology. Of these considerations, competition among providers seems the most(More)
This paper describes a content analysis of the statements of 24 Consensus Development Conferences conducted by the Office of Medical Applications of Research (OMAR) of the National Institutes of Health in the years 1979-1983. The goal was to understand the potential influence of the consensus statements by identifying characteristics that might determine(More)
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