منابع مشابه
Miracle cure: the story of antibiotics
These essays prefigure many of Ryle's later ideas on "social medicine". For Ryle, the biomedical sciences had narrowed the scope ofmedicine in an era when it most needed to expand its horizons, epistemology, and aims. He was later to recruit the methods of the modern social sciences to enhance his idea of clinical practice as the natural history of disease in order to place it on a preventive b...
متن کاملAsexuality: classification and characterization.
The term "asexual" has been defined in many different ways and asexuality has received very little research attention. In a small qualitative study (N = 4), individuals who self-identified as asexual were interviewed to help formulate hypotheses for a larger study. The second larger study was an online survey drawn from a convenience sample designed to better characterize asexuality and to test...
متن کاملHybrid asexuality as a primary reproductive barrier: on the interconnection between asexuality and speciation
2, Czech Republic. CC-BY 4.0 International license not peer-reviewed) is the author/funder. It is made available under a The copyright holder for this preprint (which was. Abstract Speciation usually proceeds in a continuum from intensively hybridizing populations until the formation of irreversibly isolated species. Restriction of interspecific gene flow may often be achieved by gradual accumu...
متن کاملMethodological issues for studying asexuality.
To date, asexuality has received little research attention and methodological issues for studying this population remain largely unaddressed. Studies have drawn on existing approaches and instruments and what asexuals themselves have learned in discoursing with each other has not always been consistently taken into account in research designs. I discuss operational definitions, sampling problem...
متن کاملAsexuality: The Insects that Stick With It
One hope of trying to understand why sex is so powerful and prevalent a mode of reproduction relies on the rare examples of animals that persist long-term without having sex. Now, several species of stick insects join that illustrious circle.
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ژورنال
عنوان ژورنال: Nature
سال: 1990
ISSN: 0028-0836,1476-4687
DOI: 10.1038/346510a0