Hoshin is a hydrologist, systems theorist and philosopher, with strong technical skills in complex algorithm development. His particular expertise is in earth system modeling and in exploring issues relating to terrestrial processes with a particular focus on hydrology. Historically he has driven improvements to methods for model-based learning, including multi-criteria and diagnostic methods, and is now leading developments in assessment and correction of model structural adequacy based in rigorous Bayesian and Information Theoretic approaches. This work has earned him an H-Index = 63, having published 10 books and over 170 peer-reviewed papers, 43 of which have been cited more than 100 times, and one being cited more than 1500 times. In addition, since serving as Associate Director (2000-2005) of the UA-HWR-based NSF science and technology center SAHRA, Hoshin has been working on improving the integration of hydrologic science into decision-making and policy. In 2006 he was named the Salt River Project (SRP) Professor of Technology, Public Policy & Markets for work on evaluating hydrological impacts of potential climate change. His (co-edited) books ‘Water Policy in New Mexico: Addressing the Challenge of an Uncertain Future’ and 'Water Bankruptcy In The Land Of Plenty: Steps towards a transatlantic and transdisciplinary assessment of water scarcity in Southern Arizona' were published in 2012 and 2016 respectively. Recently he was a PI of the first EU funded project to strengthen ties between European- and US-based researchers in the social and natural sciences related to water. His total research co-funding exceeds $40M (including SAHRA).