Drawings with River

These paintings are a record of my recent past, a past with a new son, major life shifts, big decisions and risks. These paintings are a record of my distant past, of my relationship with my father and siblings. These paintings are a record of my present, my relationship to art, current, past, good and bad. These paintings are both joyful and cathartic, simple and confusing. They are about my life, and my attempt to not repeat the mistakes of the past, but to try create joys for the future

Clean Ferrous Casting Technology Research. Final Technical Report, September 29, 1993--December 31, 1995

This report details results of a 30-month program to develop methods of making clean ferrous castings, i.e., castings free of inclusions and surface defects. The program was divided into 3 tasks: techniques for producing clean steel castings, electromagnetic removal of inclusions from ferrous melts, and study of causes of metal penetration in sand molds in cast iron

Linking The Tectonic, Hypsometric and Geodynamic History of The Central and Southern Canadian Shield Using (U-Th)/He Thermochronology and Global Convection Modeling

The burial and erosion histories of continental interiors provide an important record that can test the influence of forces outside plate margin tectonism, such as dynamic topography or far-field tectonics, on continental vertical motions. The Canadian Shield, an immense region of exposed Precambrian basement far from plate margins, is well suited for this endeavor. Low-temperature thermochronology, combined with geologic constraints, can reveal past burial and erosion in areas of exposed Precambrian basement. The objectives of this dissertation are: 1) reconstruct late Neoproterozoic through Phanerozoic burial and erosion across the central and southern Canadian Shield using apatite (U-Th)/He (AHe) thermochronology and thermal history modeling, and 2) use 3D models of mantle convection to compute dynamic topography from two competing models of Paleozoic-early Mesozoic plate motions and test them against the burial and erosion record of the Canadian Shield. I first developed a model of the Phanerozoic burial and erosion history across the Hearne Province, Trans-Hudson Orogen, Superior Craton, and Grenville Province using thermal history modeling of AHe data from Precambrian basement and geologic constraints from nearby sedimentary basins and kimberlite eruptions. In the central Shield, reproducible AHe dates at ~510&nbsp;&plusmn; 49 Ma record a substantial phase of post-650 Ma erosion. These data strongly imply that the erosion surface below the Great Unconformity, which separates Precambrian basement from overlying Phanerozoic sedimentary units, formed here after 650 Ma. In the southern shield, younger AHe dates bear on subsequent Paleozoic burial that was likely deepest in the eastern Superior Craton and Grenville Province, with lesser burial in western Superior. This sedimentary cover was likely removed in an eastward-progressing exhumation phase during late Paleozoic to early Mesozoic time. I then compared this record, along with prior work from the Slave craton, with two histories of dynamic topography drawn from 3D models of mantle convection using competing models of Paleozoic-early Mesozoic plate motions as surface boundary conditions. The plate motions imposing greater convergence between Laurentia and Gondwana during the early-mid Paleozoic and assembly of Pangea produced negative topography that fit the data better than the other model imposing more transform boundaries and passive margins.</p

Metalcasting Competitiveness Research. Final Report

This report comprises eleven separate reports: prediction of non- metallic particle distribution, electromagnetic separation of inclusions from molten Al alloy, clean steel castings, waste stream identification and treatment, elastic wave lithotripsy for removal of ceramic from investment castings, metal penetration in sand molds, mold-metal interface gas composition, improved Alloy 718, specifications for iron oxide additions to no-bake sands, criteria functions for defect prediction, and computer-aided cooling curve analysis

Erfolgsfaktoren in der wissenschaftlichen Weiterbildung. Ergebnisse einer Erhebung an bayerischen Hochschulen

Ziel der in der DGWF Engagierten ist es, hochwertige und dauerhaft erfolgreiche Weiterbildungsangebote zu schaffen. Dieser Beitrag präsentiert die Ergebnisse einer quantitativen Umfrage mit Verantwortlichen für wissenschaftliche Weiterbildung an Hochschulen im Freistaat Bayern zum Thema Erfolgsfaktoren. Darin wird die Facheinschätzung jener 34 Expert*innen zu den wichtigsten Elementen in Konzeption, Organisation und Angebotsausführung wiedergegeben, auf dass eine erfolgreiche Etablierung gelingt. Darüber hinaus liefern die Autorinnen einen Überblick zur aktuellen bayerischen Situation der wissenschaftlichen Weiterbildung mit Verortung auf nationaler Ebene und vergleichen die zentralsten Forschungsergebnisse mit thematisch verwandten Studien. Der Beitrag schließt mit Diskussionsanregungen zu aktuellen Entwicklungsperspektiven. (DIPF/Orig.