Wu Fly Veils et al.(2014) showed that under the small set expansion hypothesis (SSEH) there is no polynomial time approximation algorithm with any constant approximation factor for several graph width parameters, including tree-width, path-width, and cut-width (Wu et al.2014).In this paper, we extend this line of research by exploring other graph w
Shopify Shipping Abstract Background Spermatogonial stem cells (SSCs) are the foundation cells for continual spermatogenesis and germline regeneration in mammals.SSC activities reside in the undifferentiated spermatogonial population, and currently, the molecular identities of SSCs and their committed progenitors remain unclear.Results We performed
Effectively using the best available data to meet management mandates for endangered populations is a common conservation challenge.False killer whales Pseudorca crassidens occur as 3 distinct populations in Hawaiian waters, including a resident main Hawaiian Islands (MHI) population that is endangered under the US Endangered Species Act.A longitud
The watershed hydrologic conditions in the Madre de Dios (MDD) Basin in the Peruvian Amazon have been irreversibly impacted by deforestation and changes in land cover.These changes have also had detrimental effects on the geomorphology, water quality, and aquatic habitat within the basin.However, there is a scarcity of hydrological modeling studies