Results 141 to 150 of about 169,073 (281)
Naval Research Logistics (NRL), EarlyView.ABSTRACT This paper examines the impacts of Volume‐Based Procurement (VBP) policies on pharmaceutical supply chains, with a focus on the strategic behaviors of manufacturers. VBP aims to reduce costs and stabilize supplies by centralizing procurement through competition based on volumes and prices.
Nani Zhou, Tong Wang, Guohua Wan
wiley +1 more source
Environmental influence on intraspecific trait variation in the tropical seagrass Halodule uninervis
Oikos, EarlyView.Intraspecific trait variation (ITV) enhances the precision of applying functional trait approaches in plant ecology. Despite its benefits, ITV is rarely considered in functional trait‐based seagrass research. The goal of our research is to measure ITV in the tropical seagrass species Halodule uninervis and assess the environmental factors associated ...
Chieh Lin +5 more
wiley +1 more source
Connecting the distribution and diversification of marine plants
Oikos, EarlyView.Integration of the evolutionary history with distribution of extant species is necessary to explain present‐day diversity, particularly for ‘foundation' species, such as seagrasses, which create habitats of socioecological relevance. Here, we resolved if varying evolutionary history of seagrass families has imprinted the distribution ranges of extant ...
Fernando Tuya +3 more
wiley +1 more source
spam: A Sparse Matrix R Package with Emphasis on MCMC Methods for Gaussian Markov Random Fields
Journal of Statistical Software, 2010 spam is an R package for sparse matrix algebra with emphasis on a Cholesky factorization of sparse positive definite matrices. The implemantation of spam is based on the competing philosophical maxims to be competitively fast compared to existing tools ...
Reinhard Furrer, Stephan R. Sain
doaj
Stochastic Learning for Sparse Discrete Markov Random Fields with Controlled Gradient Approximation Error. [PDF]
Uncertain Artif Intell, 2018 Geng S +4 more
europepmc +1 more source
People and Nature, EarlyView.Abstract The societal and biophysical permeability across human‐demarcated jurisdictions within watersheds necessitates collaboration among administrative regions. The effectiveness of such collaboration is partly determined by the degree to which institutional arrangements align with underlying social and ecological interdependencies, a concept ...
Fang Wang +3 more
wiley +1 more source
Spatial quantification of the synaptic activity phenotype across large populations of neurons with Markov random fields. [PDF]
Bioinformatics, 2018 Robinson S, Courtney MJ.
europepmc +1 more source
Detecting extirpation: A localized approach to a global problem
PLANTS, PEOPLE, PLANET, EarlyView.The global biodiversity crisis stems from a cascading series of extirpations driving species toward extinction. Addressing this crisis requires methods for early detection of extinction at local scales, where communities can mobilize conservation efforts.
Andrew D. F. Simon +4 more
wiley +1 more source
PLANTS, PEOPLE, PLANET, EarlyView.Evergreen broadleaved forests (EBLFs) represent an iconic vegetation type in subtropical montane East Asia, but they are experiencing intensifying anthropogenic pressure and increasing habitat fragmentation. Here, using a dominant and widespread tree species characteristic of East Asian EBLFs, we examine its phylogeographic history and evaluate what it
Sheng‐Yuan Qin +7 more
wiley +1 more source