Efficient bumblebees are almost specialists
نویسندگان
چکیده
منابع مشابه
Are shrubland birds edge specialists?
In studies of forest fragmentation, birds of scrubby, early-successional habitats are considered edge specialists. Because these birds are assumed to thrive in fragmented, edge-dominated areas, their landscape ecology has received little attention from ecologists. With populations of shrubland birds declining throughout the eastern United States, the question of whether or not these birds reall...
متن کاملAlmost-commuting matrices are almost jointly diagonalizable
We study the relation between approximate joint diagonalization of self-adjoint matrices and the norm of their commutator, and show that almost commuting self-adjoint matrices are almost jointly diagonalizable by a unitary matrix.
متن کاملAlmost Efficient Innovation by Pricing Ideas Almost Efficient Innovation by Pricing Ideas Almost Efficient Innovation by Pricing Ideas
Innovation is the creation of intellectual assets; intellectual assets are distinguished by nonconvexities. But different nonconvexities affect outcomes differently. Provided knowledge is finitely expansible, nonrivalry causes no difficulties for the existence and expost efficiency of competitive equilibrium. However, the minimum-size indivisibility in creating intellectual assets renders compe...
متن کاملMargaret McCartney: Are GPs specialists in life?
“I understand dark clouds, but I’m not a meteorologist . . . I understand addiction, but I’m not a rehab counsellor.” So run some of the quotes from a selection of well groomed GPs featured in a multimedia campaign by the Royal Australian College of General Practitioners. The campaign has been ongoing in the context of intense funding pressure and in election season, and the college is trying h...
متن کاملAlmost All Palindromes Are Composite
We study the distribution of palindromic numbers (with respect to a fixed base g ≥ 2) over certain congruence classes, and we derive a nontrivial upper bound for the number of prime palindromes n ≤ x as x → ∞. Our results show that almost all palindromes in a given base are composite. ∗MSC Numbers: 11A63, 11L07, 11N69 †Corresponding author 1
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
سال: 1976
ISSN: 0028-0836,1476-4687
DOI: 10.1038/263549a0