Basic Knowledge and Conditions on Knowledge

How do we know what we know? In this stimulating and rigorous book, Mark McBride explores two sets of issues in contemporary epistemology: the problems that warrant transmission poses for the category of basic knowledge; and the status of conclusive reasons, sensitivity, and safety as conditions that are necessary for knowledge. To have basic knowledge is to know (have justification for) some proposition immediately, i.e., knowledge (justification) that doesn’t depend on justification for any other proposition. This book considers several puzzles that arise when you take seriously the possibility that we can have basic knowledge. McBride’s analysis draws together two vital strands in contemporary epistemology that are usually treated in isolation from each other. Additionally, its innovative arguments include a new application of the safety condition to the law. This book will be of interest to epistemologists―both professionals and students

Open Educational Resources: Why OER and why now?

Digital technology makes it easier for students to access free or low cost course materials and while interested faculty have committed to providing OERs for their students, higher education is not experiencing a massive adoption of OER content. In this presentation Mark will explain why he feels now is an appropriate time for campuses to consider OER adoption in their classes. He will showcase examples of where OER has had a positive impact on students’ academic success, the financial benefits students receive from moving to OER in their course and provide concrete examples of how it has improved student retention

Design and testing of devices to prevent horizontal tail stall of the Ball-Bartoe Jetwing research aircraft

Since its inception, the Ball-Bartoe Jetwing Research Aircraft has been plagued with the problems of horizontal tail stall and static longitudinal instability. The tail stall problem is primarily due to the large downwash at the tail due to the Jetwing\u27s Upper Surface Blowing concept of propulsive lift, and due to the thin, symmetric NACA 0008 airfoil section used for the aircraft \u27s horizontal tail. These characteristics also contribute to the instability of the Jetwing, as do the aircraft\u27s center of gravity and low tail volume coefficient. Several possible aircraft modifications were examined to determine if they alleviated the tail stall and stability problems. The two most promising modifications, a leading-edge slat and a leading-edge droop device, were tested on a quarter-scale half span model of the Jetwing horizontal tail in the University of Tennessee Space Institute\u27s Low Speed Wind-Tunnel .The results of these tests show that while both the slat and droop configurations improve the Jetwing\u27s horizontal tail stall capabilities, neither modification affected the aircraft\u27s stability problem significantly

Heap Leaching: Modelling and Forecasting Using CFD Technology

Heap leach operations typically employ some form of modelling and forecasting tools to predict cash flow margins and project viability. However, these vary from simple spreadsheets to phenomenological models, with more complex models not commonly employed as they require the greatest amount of time and effort. Yet, accurate production modelling and forecasting are essential for managing production and potentially critical for successful operation of a complex heap, time and effort spent in setting up modelling tools initially may increase profitability in the long term. A brief overview of various modelling approaches is presented, but this paper focuses on the capabilities of a computational fluid dynamics (CFD) model. Advances in computational capability allow for complex CFD models, coupled with leach kinetic models, to be applied to complex ore bodies. In this paper a comprehensive hydrodynamic CFD model is described and applied to chalcopyrite dissolution under heap operating conditions. The model is parameterized against experimental data and validated against a range of experimental leach tests under different thermal conditions. A three-dimensional ‘virtual’ heap, under fluctuating meteorological conditions, is simulated. Continuous and intermittent irrigation is investigated, showing copper recovery per unit volume of applied leach solution to be slightly increased for pulse irrigation