Acoustic Space Movement Planning in a Neural Model of Motor Equivalent Vowel Production

Recent evidence suggests that speakers utilize an acoustic-like reference frame for the planning of speech movements. DIVA, a computational model of speech acquisition and motor equivalent speech production, has previously been shown to provide explanations for a wide range of speech production data using a constriction-based reference frame for movement planning. This paper extends the previous work by investigating an acoustic-like planning frame in the DIVA modeling framework. During a babbling phase, the model self-organizes targets in the planning space for each of ten vowels and learns a mapping from desired movement directions in this planning space into appropriate articulator velocities. Simulation results verify that after babbling the model is capable of producing easily recognizable vowel sounds using an acoustic planning space consisting of the formants F1 and F2. The model successfully reaches all vowel targets from any initial vocal tract configuration, even in the presence of constraints such as a blocked jaw.Office of Naval Research (N00014-91-J-4100, N00014-92-J-4015); Air Force Office of Scientific Research (F49620-92-J-0499

Marine exploration

Less than 50 years ago knowledge of the geology of the UK continental shelf (UKCS) was extremely limited. The BGS marine geoscience programme began about 40 years ago in response to the development of the UK oil and gas industry. The BGS was funded by the then Department of Energy to carry out a national mapping programme based on geophysical data, seabed samples and boreholes. By the 1990s, geological maps at a scale of 1:250 000 were published for the shelf regions showing seabed sediments, Quaternary geology and bedrock. The deeper water areas to the north and west continue to be explored with support from the oil industry. A series of regional reports, the offshore equivalent of the BGS regional guides, were published and reports for the Atlantic Margin will be published in 2010. MAREMAP is a new multidisciplinary environmental mapping programme designed to underpin the new marine industries and environmental issues

A Theory for the Variation of Dust Attenuation Laws in Galaxies

In this paper, we provide a physical model for the origin of variations in the shapes and bump strengths of dust attenuation laws in galaxies by combining a large suite of cosmological "zoom-in" galaxy formation simulations with 3D Monte Carlo dust radiative transfer calculations. We model galaxies over 3 orders of magnitude in stellar mass, ranging from Milky Way like systems through massive galaxies at high-redshift. Critically, for these calculations we employ a constant underlying dust extinction law in all cases, and examine how the role of geometry and radiative transfer effects impact the resultant attenuation curves. Our main results follow. Despite our usage of a constant dust extinction curve, we find dramatic variations in the derived attenuation laws. The slopes of normalized attenuation laws depend primarily on the complexities of star-dust geometry. Increasing fractions of unobscured young stars flatten normalized curves, while increasing fractions of unobscured old stars steepen curves. Similar to the slopes of our model attenuation laws, we find dramatic variation in the 2175 Angstrom ultraviolet (UV) bump strength, including a subset of curves with little to no bump. These bump strengths are primarily influenced by the fraction of unobscured O and B stars in our model, with the impact of scattered light having only a secondary effect. Taken together, these results lead to a natural relationship between the attenuation curve slope and 2175 Angstrom bump strength. Finally, we apply these results to a 25 Mpc/h box cosmological hydrodynamic simulation in order to model the expected dispersion in attenuation laws at integer redshifts from z=0-6. A significant dispersion is expected at low redshifts, and decreases toward z=6. We provide tabulated results for the best fit median attenuation curve at all redshifts.Comment: Submitted to ApJ; Comments Welcom

Impulse

Features: [Page] 2 S is for success: New effort introduces Native American teens to college. [Page] 4 The New Leader: SDSU educator brings varied experience to the dean\u27s office. [Page] 6 Crescendo at Crothers Engineering hall being renovated, expanded in $7 million effort. [Page] 8 Engineering landmark Solberg Hall gets special treatment with renovation.Students: [Page] 20 Golden tribute to the silver-haired dean[Page] 21 Remund doubles up with teaching honors[Page] 21 Detail guy\u27 honored for work[Page] 22 Making models in a hurry[Page] 23 Persistence pays off for Selim with increased LTAP funding[Page] 25 Triaxial machine gives new meaning to materials testing[Page] 26 Wizard wins Service Award from S.D. Science TeachersAlumni: [Page] 27 Alum wins invention awards on three continents[Page] 28 Hometown Service[Page] 29 Donation enhances ME design teams[Page 43] \u27Nothing steers like a Giere\u27https://openprairie.sdstate.edu/coe_impulse/1046/thumbnail.jp

Impulse

Features: [Page] 2 SDSU engineers restore Solberg Hall to active duty: From donors to the project manager, this effort was the project of alumni. [Page] 4 Unique funding spawns new Solberg Hall: At $1, Solberg was the best purchase the State ever made.[Page] 6 Back from Iraq: Guard members tell their story about the restoration of Iraq.[Page] 8 Inquisitive nature leads Barnett to \u27quality\u27 career: Andy Barnett was living in a monastery when he decided to be an engineer[Page] 10 Mobile classroom brings science to students: Retired teachers drive the truck and an SDSU instructor steers the lessons.[Page] 12 \u27A perfect match\u27: Professor Alex Moutsoglou provided the research a Spearfish dentist needed.Faculty: [Page] 14 Alfred Andrawis: Works with Filipine grad student at \u27.ASA[Page] 15 Larry Browning: Coordinates training for high school physics teachers[Page] 16 Christine Larson: Mentors Lower Brule Community College student[Page] 17 New facultyCollege: [Page] 18 Economic development: A logical extension of College\u27s mission[Page] 20 Accreditation: Board visit brings favorable comments[Page] 21 Technology: Students work with fuel cell[Page] 22 Structures lab: A$280,000 grant means it\u27s shopping time[Page] 23 New map: EROS replaces black-and-white map in CrothersStudents: [Page] 24 ASCE: A Successful Chapter since Eternity, or so it seems[Page] 25 Ryan Brunner: Newell sophomore earns top FFA awardAlumni: [Page] 26 Children of Alumni: Regent to lower tuition for out-of-state alumniContributors: [Page] 26-28 Dean\u27s Clubhttps://openprairie.sdstate.edu/coe_impulse/1016/thumbnail.jp

Sweet Lady

https://digitalcommons.library.umaine.edu/mmb-vp/2551/thumbnail.jp