Results 71 to 80 of about 479 (182)
Seasonal body mass dynamics mediate life‐history trade‐offs in a hibernating mammal
Journal of Animal Ecology, EarlyView.We tested a suite of ecological hypotheses to explain variation in seasonal body mass dynamics of a fat‐storing mammalian hibernator. We further demonstrated that pre‐hibernation mass gain in ground squirrels mediates an annual allocation trade‐off between current and future reproduction as the squirrels forage and rear young under predation risk ...
Austin Z. T. Allison +4 more
wiley +1 more source
Journal of Agricultural Economics, EarlyView.ABSTRACT Coffee producers deal with uncertainty due to high volatility in coffee prices. To navigate these challenges, producers must balance the tradeoff between higher yield and better quality utilising heterogeneous technologies, such as intensive production methods and environmental management practices.
Orlando Rodríguez +2 more
wiley +1 more source
The extremal pentagon-chain polymers with respect to permanental sum. [PDF]
Sci Rep, 2020 Wu T, Wang H, Zhang S, Deng K.
europepmc +1 more source
The existence of matrices with prescribed characteristic and permanental polynomials
Linear Algebra and its Applications, 1978 AbstractLet d(λ) and p(λ) be monic polynomials of degree n⩾2 with coefficients in F, an algebraically closed field or the field of all real numbers. Necessary and sufficient conditions for the existence of an n-square matrix A over F such that det(λI−A)=d(λ) and per(λI−A=p(λ) are given in terms of the coefficients of d(λ) and p(λ).
openaire +1 more source
Determinantal and permanental representation of generalized bivariate Fibonacci p-polynomials
, 2011 In this paper, we give some determinantal and permanental representations of generalized bivariate Fibonacci p-polynomials by using various Hessenberg matrices. The results that we obtained are important since generalized bivariate Fibonacci p-polynomials are general form of, for example, bivariate Fibonacci and Pell p-polynomials, second kind ...
Kaygisiz, Kenan, Sahin, Adem
openaire +2 more sources
Criminology, EarlyView.Abstract Three‐quarters of US prisons offer vocational training programs, which aim to place trainees in middle‐skills jobs in specific occupational sectors post‐release. These middle‐skills jobs may more effectively reduce recidivism than the jobs that normally characterize the labor market experience of the formerly incarcerated, yet whether ...
Britte van Tiem
wiley +1 more source
Addiction, EarlyView.Abstract Background and aims Recreational ketamine use has increased globally and is associated with psychiatric and cognitive concerns. The hippocampus in preclinical models shows damage and working‐memory disruption with repeated dosing. However, whether specific hippocampal subregions may differ in people with chronic ketamine use remains unclear ...
Yi‐Hsuan Liu +8 more
wiley +1 more source
Unification of the Nature's Complexities via a Matrix Permanent-Critical Phenomena, Fractals, Quantum Computing, ♯P-Complexity. [PDF]
Entropy (Basel), 2020 Kocharovsky V, Kocharovsky V, Tarasov S.
europepmc +1 more source
Enumerating contingency tables via random permanents
, 2005 Given m positive integers R=(r_i), n positive integers C=(c_j) such that sum r_i = sum c_j =N, and mn non-negative weights W=(w_{ij}), we consider the total weight T=T(R, C; W) of non-negative integer matrices (contingency tables) D=(d_{ij}) with the row
Barvinok, Alexander
core +3 more sources
American Journal of Agricultural Economics, EarlyView.Abstract Agricultural subsidies can be an effective policy tool to enhance soil organic carbon sequestration. This paper assesses the effectiveness of a second‐best hypothetical policy which subsidizes additional canola hectares optimally for each soil zone in Saskatchewan in an effort to increase soil organic carbon.
Devin A. Serfas
wiley +1 more source