For example, Vladimir Putin's banning of "propaganda of non-traditional sexual relations" has had the knock-on effect of making AIDS education literature harder than ever to access.
I'm not talking about straight-up pornography; a genuinely good sex scene in literature is hard to come by.
Fadel also pointed out that cheap editions of great works of literature are hard to come by in Morocco these days.
Due to the complexity of the network topology, and the number of operational constraints, methods from the literature are hard to adapt.
The residual stresses in literature on hard coatings (e.g., TiN, CrN, HfN and ZrN) are usually calculated using the mechanical elastic constants often determined by indentation technique by assuming isotropic behavior.
While these identification techniques have been very suitable for the identification of such mechanical, aeronautical or civil structures, covariance expressions of the estimates of the system matrices are difficult to obtain and theoretical results from literature are hard to implement for output-only systems with unknown noise properties in practice.
During the recession, many universities around the country dropped small programs that attracted few majors or were duplicative, with romance languages and literature especially hard hit, Brint said.
Manual curation from the literature is hard.
While the knowledge was traditionally scattered throughout the literature and hard to access systematically, new efforts are cataloging pathway knowledge into publicly available databases.
A comparison with the literature is hard, since there are very few data on acute HPA axis activity after SAH [ 2].
The search included electronic databases (Medline (472 papers) AMED (129 papers), Econlit (0 papers), CINAHL (15 papers), Cochrane Database of Systematic Reviews (71 papers)), hand searches of the literature, including hard copies of journals, and a search of the reference lists of the articles and publications found through electronic and hand searches.
