منابع مشابه
Is extended-release guaifenesin no better than a placebo?
In this issue of RESPIRATORY CARE, Hoffer-Schaefer et al1 report the results of a double-blind randomized placebocontrolled trial examining the effects of guaifenesin on both the volume and physical properties of sputum in patients with acute respiratory tract infections (RTIs). Guaifenesin has been marketed as an FDA-approved over-thecounter (OTC) expectorant medication with annual sales of ap...
متن کاملIs any wheelchair better than no wheelchair? A Zimbabwean perspective
BACKGROUND Within a rights-based paradigm, wheelchairs are essential in the promotion of user autonomy, dignity, freedom, inclusion and participation. OBJECTIVES This paper aimed to describe a group of Zimbabwean wheelchair users' satisfaction with wheelchairs, wheelchair services and wheelchair function. METHOD A mixed method, descriptive study was done. Quantitative data was collected fro...
متن کاملA Minimax Algorithm Better Than Alpha-beta?: No and Yes
This paper has three main contributions to our understanding of fixed-depth minimax search: (A) A new formulation for Stockman’s SSS* algorithm, based on Alpha-Beta, is presented. It solves all the perceived drawbacks of SSS*, finally transforming it into a practical algorithm. In effect, we show that SSS* = + transposition tables. The crucial step is the realization that transposition tables c...
متن کاملIs Conflicted Investment Advice Better than No Advice?
The value that brokers generate depends on both the quality of their investment recommendations and their clients’ counterfactual portfolios. To identify counterfactual portfolios inside a defined contribution retirement plan, we exploit time-series variation in access to brokers. When brokers are available, the correlations with age, income, and educational attainment suggest that brokers are ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Nature Biotechnology
سال: 1990
ISSN: 1087-0156,1546-1696
DOI: 10.1038/nbt0890-768c