منابع مشابه
The Holy Grail and the quest for the gold standard.
I n this issue of the American Journal of Neuroradiology, Jaremko et al 1 report that apparent diffusion coefficient (ADC) values are not always reliable to discriminate medullo-blastomas from pilocytic astrocytomas (PAs according to the 2007 WHO classification of brain tumors 2 , instead of previously used juvenile pilocytic astrocytomas JPAs). This article raises a number of important issues....
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The HIV/AIDS pandemic has grown to immense proportions, establishing itself as the fourth leading cause of death worldwide. In response, worldwide interest in HIV treatments has grown, but uncertainty in how to go about funding these treatments remains. Nations must choose between the most effective combinations of sexual education, antiretroviral treatments (ARV) and HIV vaccine research. Our ...
متن کاملImpact assessment and the quest for the Holy Grail
Conducting focus group discussions in Lake Naivasha Evaluation is seen as vital for both accountability and learning purposes. This involves understanding not only what worked but also the process of change and why and how an intervention worked. Donors, programme managers and evaluators often claim to seek not only successful outcomes, but the ‘holy grail’ of impact. This paper surveys the min...
متن کاملRun-Time Metaobject Protocols: the Quest for their Holy Application
Run-time MetaObject Protocols (MOPs) are reflective systems that allow objects to be controlled at run time by one or many metaobjects. These metaobjects can then alter the semantics of the execution for the base objects they control. Jumping to the meta level to alter the semantics is powerful but indeed fairly costly. It is therefore desirable to let users fine-tune their run-time MOP accordi...
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ژورنال
عنوان ژورنال: Nature
سال: 2016
ISSN: 0028-0836,1476-4687
DOI: 10.1038/nj7609-729a