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Haptic-Geozui3d: Exploring The Use Of Haptics In Auv Path Planning, Rick Komerska, Colin Ware Aug 2003

Haptic-Geozui3d: Exploring The Use Of Haptics In Auv Path Planning, Rick Komerska, Colin Ware

Center for Coastal and Ocean Mapping

We have developed a desktop virtual reality system that we call Haptic-GeoZui3D, which brings together 3D user interaction and visualization to provide a compelling environment for AUV path planning. A key component in our system is the PHANTOM haptic device (SensAble Technologies, Inc.), which affords a sense of touch and force feedback – haptics – to provide cues and constraints to guide the user’s interaction. This paper describes our system, and how we use haptics to significantly augment our ability to lay out a vehicle path. We show how our system works well for quickly defining simple waypoint-towaypoint (e.g. transit) …

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High-Frequency Volume And Boundary Acoustic Backscatter Fluctuations In Shallow Water, Timothy C. Gallaudet, Christian De Moustier Aug 2003

High-Frequency Volume And Boundary Acoustic Backscatter Fluctuations In Shallow Water, Timothy C. Gallaudet, Christian De Moustier

Center for Coastal and Ocean Mapping

Volume and boundary acoustic backscatter envelope fluctuations are characterized from data collected by the Toroidal Volume Search Sonar (TVSS), a 68 kHz cylindrical array capable of 360° multibeam imaging in the vertical plane perpendicular to its axis. The data are processed to form acoustic backscatter images of the seafloor, sea surface, and horizontal and vertical planes in the volume, which are used to attribute nonhomogeneous spatial distributions of zooplankton, fish, bubbles and bubble clouds, and multiple boundary interactions to the observed backscatter amplitude statistics. Three component Rayleigh mixture probability distribution functions (PDFs) provided the best fit to the empirical distribution …

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Integrating Multiple 3d Views Through Frame-Of-Reference Interaction, Matthew D. Plumlee, Colin Ware Jul 2003

Integrating Multiple 3d Views Through Frame-Of-Reference Interaction, Matthew D. Plumlee, Colin Ware

Center for Coastal and Ocean Mapping

Frame-of-reference interaction consists of a unified set of 3D interaction techniques for exploratory navigation of large virtual spaces in nonimmersive environments. It is based on a conceptual framework that considers navigation from a cognitive perspective, as a way of facilitating changes in user attention from one reference frame to another, rather than from the mechanical perspective of moving a camera between different points of interest. All of our techniques link multiple frames of reference in some meaningful way. Some techniques link multiple windows within a zooming environment while others allow seamless changes of user focus between static objects, moving objects, …

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Observations Of Discrete, Global Magnetospheric Oscillations Directly Driven By Solar Wind Density Variations, L. Kepko, Harlan E. Spence Jun 2003

Observations Of Discrete, Global Magnetospheric Oscillations Directly Driven By Solar Wind Density Variations, L. Kepko, Harlan E. Spence

Physics & Astronomy

No abstract provided.

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Suprathermal Electron Isotropy In High-Beta Solar Wind And Its Role In Heat Flux Dropouts, N. U. Crooker, D. E. Larson, S. W. Kahler, S. M. Lamassa, Harlan E. Spence Jun 2003

Suprathermal Electron Isotropy In High-Beta Solar Wind And Its Role In Heat Flux Dropouts, N. U. Crooker, D. E. Larson, S. W. Kahler, S. M. Lamassa, Harlan E. Spence

Physics & Astronomy

[1] Time variations in plasma beta and a parameter which measures isotropy in suprathermal electron pitch angle distributions show a remarkably close correspondence throughout the solar wind. The finding implies that high-beta plasma, with its multiple magnetic holes and sharp field and plasma gradients, is conducive to electron pitch-angle scattering, which reduces heat flux from the Sun without field-line disconnection. Thus the finding impacts our understanding of signatures we use to determine magnetic topology in the heliosphere.

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Peatland Responses To Varying Interannual Moisture Conditions As Measured By Automatic Co2 Chambers, Jill L. Bubier, P Crill, Steve Frolking, Ernst Linder, Andrew Mosedale Jun 2003

Peatland Responses To Varying Interannual Moisture Conditions As Measured By Automatic Co2 Chambers, Jill L. Bubier, P Crill, Steve Frolking, Ernst Linder, Andrew Mosedale

Earth Sciences

Net ecosystem CO2 exchange (NEE) was measured from June 2000 through October 2001 by 10 automatic chambers at a peatland in southeastern New Hampshire. The high temporal frequency of this sampling method permitted detailed examination of NEE as it varied daily and seasonally. Summer of 2001 was significantly drier than the 30-year average, while summer of 2000 was wetter than normal. Although NEE varied spatially across the peatland with differences in plant species composition and biomass, maximum CO2 uptake was 30–40% larger in the drier summer in evergreen and deciduous shrub communities but the same or lower in …

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Automatic Processing Of High-Rate, High-Density Multibeam Echosounder Data, Brian R. Calder, Larry A. Mayer Jun 2003

Automatic Processing Of High-Rate, High-Density Multibeam Echosounder Data, Brian R. Calder, Larry A. Mayer

Center for Coastal and Ocean Mapping

Multibeam echosounders (MBES) are currently the best way to determine the bathymetry of large regions of the seabed with high accuracy. They are becoming the standard instrument for hydrographic surveying and are also used in geological studies, mineral exploration and scientific investigation of the earth's crustal deformations and life cycle. The significantly increased data density provided by an MBES has significant advantages in accurately delineating the morphology of the seabed, but comes with the attendant disadvantage of having to handle and process a much greater volume of data. Current data processing approaches typically involve (computer aided) human inspection of all …

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The New Hampshire, Vol. 92 [93], No. 52 (May 9, 2003), The New Hampshire May 2003

The New Hampshire, Vol. 92 [93], No. 52 (May 9, 2003), The New Hampshire

The New Hampshire Print Edition

An independent student produced newspaper from the University of New Hampshire. This volume was printed as 92, but it is the 93rd volume in the series. This was corrected in pencil.

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2002-03 Faculty Senate - May 5, 2003 Minutes Summary, Faculty Senate May 2003

2002-03 Faculty Senate - May 5, 2003 Minutes Summary, Faculty Senate

Faculty Senate Agendas & Minutes

No abstract provided.

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The New Hampshire, Vol. 92 [93], No. 50 (May 2, 2003), The New Hampshire May 2003

The New Hampshire, Vol. 92 [93], No. 50 (May 2, 2003), The New Hampshire

The New Hampshire Print Edition

An independent student produced newspaper from the University of New Hampshire. This volume was printed as 92, but it is the 93rd volume in the series. This was corrected in pencil.

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Optimizing A Law School’S Course Schedule, Shelley Saxer, Gary M. Thompson May 2003

Optimizing A Law School’S Course Schedule, Shelley Saxer, Gary M. Thompson

The University of New Hampshire Law Review

[Excerpt] “Just like other educational institutions, law schools must schedule courses by taking into consideration student needs, faculty resources, and logistical support such as classroom size and equipment needs. Course scheduling is an administrative function, typically handled by an Assistant Dean or an Associate Dean, who works with the faculty and the registrar to balance these considerations in advance of the registration process. Usually, the entire academic year is scheduled in advance, although the spring semester may be labeled tentative until registration begins for that semester. It’s hard to imagine, but some schools even publish a two-year schedule of upper-division …

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Remotely Forced Nearshore Upwelling In Southern California, James M. Pringle, K Riser Apr 2003

Remotely Forced Nearshore Upwelling In Southern California, James M. Pringle, K Riser

Earth Sciences

[1] Alongshore winds in Baja California strongly influence nearshore temperatures hundreds of kilometers to the north at Point Loma, San Diego, California, on timescales of a week to a year. The time lag between wind and temperature is consistent with first mode coastal trapped wave phase speed. The nearshore cross-shelf circulation forced by the coastal trapped waves is, at least much of the year, oppositely directed at the surface and bottom. No relation is found between the winds and temperature for periods greater than a year. It is argued that similar results may be found elsewhere in the Southern California …

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Be-10/Be-7 Tracer Of Atmospheric Transport And Stratosphere-Troposphere Exchange, C. Jordan, Jack E. Dibb, R C. Finkel Apr 2003

Be-10/Be-7 Tracer Of Atmospheric Transport And Stratosphere-Troposphere Exchange, C. Jordan, Jack E. Dibb, R C. Finkel

Earth Sciences

The 10Be/7Be ratio is a sensitive tracer of atmospheric transport and stratosphere-troposphere exchange (STE). Data from five NASA aircraft field missions (PEM: West A and B, Tropics A; SONEX; and SUCCESS) have been assembled to produce the largest data set of 10Be,7Be, and their ratio collected to date (>300 samples). Ratios near 0.60 are indicative of tropospheric air with little stratospheric influence, while higher ratios are found in stratospheric air. Samples from the lower stratosphere were all collected within 2.5 km of the tropopause and had ratios >1.27. Of these lower stratosphere samples …

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The New Hampshire, Vol. 92 [93], No. 48 (April 25, 2003), The New Hampshire Apr 2003

The New Hampshire, Vol. 92 [93], No. 48 (April 25, 2003), The New Hampshire

The New Hampshire Print Edition

An independent student produced newspaper from the University of New Hampshire. This volume was printed as 92, but it is the 93rd volume in the series. This was corrected in pencil.

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Unh Hosts Fourth Annual Undergraduate Research Conference, Lori Gula Apr 2003

Unh Hosts Fourth Annual Undergraduate Research Conference, Lori Gula

Media Relations

No abstract provided.

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Dedication Ceremony For Leitzel Center To Be Held April 30, Sharon Keeler Apr 2003

Dedication Ceremony For Leitzel Center To Be Held April 30, Sharon Keeler

Media Relations

No abstract provided.

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The New Hampshire, Vol. 92 [93], No. 46 (April 18, 2003), The New Hampshire Apr 2003

The New Hampshire, Vol. 92 [93], No. 46 (April 18, 2003), The New Hampshire

The New Hampshire Print Edition

An independent student produced newspaper from the University of New Hampshire. This volume was printed as 92, but it is the 93rd volume in the series. This was corrected in pencil.

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Media Advisory Whittemore School Hosts Executive Mba Hooding Ceremony April 19, Denise Hart Apr 2003

Media Advisory Whittemore School Hosts Executive Mba Hooding Ceremony April 19, Denise Hart

Media Relations

No abstract provided.

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The International Bathymetric Chart Of The Arctic Ocean (Ibcao): An Improved Morphological Framework For Oceanographic Investigations, Ron Macnab, Martin Jakobsson Apr 2003

The International Bathymetric Chart Of The Arctic Ocean (Ibcao): An Improved Morphological Framework For Oceanographic Investigations, Ron Macnab, Martin Jakobsson

Center for Coastal and Ocean Mapping

The IBCAO initiative set out in late 1997 to assemble and merge all available bathymetric observations from northern regions, with the intent of constructing a reliable and up-to-date portrayal of the Arctic seabed in digital and printed form. In early 2000, a provisional grid and map were placed in circulation for public review and comment. Available for free downloading from a website hosted by the U.S. National Geophysical Data Center, these products won immediate acceptance from a broad spectrum of Arctic investigators who recognized the potential worth of the new information in a variety of applications ranging from straightforward map …

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Paleomagnetic Chronology Of Arctic Ocean Sediment Cores: Reversals And Excursions -The Conundrum, Reidar Lovlie, Martin Jakobsson, Jan Backman Apr 2003

Paleomagnetic Chronology Of Arctic Ocean Sediment Cores: Reversals And Excursions -The Conundrum, Reidar Lovlie, Martin Jakobsson, Jan Backman

Center for Coastal and Ocean Mapping

Chronologies of Arctic Ocean sediment cores are mainly based on interpretation of paleomagnetic inclination records. The first paleomagnetic chronology assigned zones with negative inclinations to polarity reversals (Steuerwald et al, 1968) because geomagnetic excursions at that time were a novel observation and had only been reported from lavas. Arctic Ocean sedimentation rates were thus established to be in the mm/ka-range. A general recognition of excursions as real features of the geomagnetic field emerged more than three decades later, and presently there is still no consensus regarding the number (or name), duration and age of global synchronous excursions within the Brunhes …

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Analysis Of Data Relevant To Establishing Outer Limits Of A Continental Shelf Under Law Of The Sea Article 76, Martin Jakobsson, Larry A. Mayer, Andy Armstrong Apr 2003

Analysis Of Data Relevant To Establishing Outer Limits Of A Continental Shelf Under Law Of The Sea Article 76, Martin Jakobsson, Larry A. Mayer, Andy Armstrong

Center for Coastal and Ocean Mapping

Coastal states may extend the limits of their juridically defined continental shelf beyond 200 nautical miles from their baselines under the provisions set forth in Article 76 of the United Nations Convention on the Law of the Sea (UNCLOS). In a preparatory desktop study, the University of New Hampshire’s Center for Coastal and Ocean Mapping/Joint Hydrographic Center analysed existing U.S. bathymetric and geophysical data holdings, identified data adequacy, and survey requirements to prepare a U.S. claim beyond the Exclusive Economical Zone (EEZ). In this paper we describe the methodology for our desktop study with particular emphasis on how we assembled …

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Alumni Gift Provides Momentum To Kingsbury Hall Renovation Effort, Sarah Aldag Mar 2003

Alumni Gift Provides Momentum To Kingsbury Hall Renovation Effort, Sarah Aldag

Media Relations

No abstract provided.

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Development Of Czt Strip Detector Modules For 0.05- To 1-Mev Gamma-Ray Imaging And Spectroscopy, James M. Ryan, B Donmez, John R. Macri, M Mcclish, Mark L. Mcconnell, R S. Miller, Mark Widholm, L A. Hamel, Manuel Julien Mar 2003

Development Of Czt Strip Detector Modules For 0.05- To 1-Mev Gamma-Ray Imaging And Spectroscopy, James M. Ryan, B Donmez, John R. Macri, M Mcclish, Mark L. Mcconnell, R S. Miller, Mark Widholm, L A. Hamel, Manuel Julien

Space Science Center

We report progress in our study of cadmium zinc telluride (CZT) strip detectors featuring orthogonal coplanar anode contacts. We specifically report on the performance, characterization and stability of 5 and 10 mm thick prototype CZT detectors fabricated using material from several manufacturers. Our ongoing work includes laboratory and simulation studies aimed at optimizing and developing compact, efficient, high performance detector modules for 0.05 to 1 MeV gamma radiation measurements with space-based instrumentation. The coplanar anode strip configuration retains many of the performance advantages of pixel detectors yet requires far fewer electronic channels to perform both 3-d imaging and spectroscopy. Minimizing …

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Nonsolar Astronomy With The Reuven Ramaty High Energy Solar Spectroscopic Imager (Rhessi), David M. Smith, Robert P. Lin, K Hurley, Wayne Coburn, G J. Hurford, Claudia Wigger, W Hajdas, Alex Zehnder, Mark L. Mcconnell Mar 2003

Nonsolar Astronomy With The Reuven Ramaty High Energy Solar Spectroscopic Imager (Rhessi), David M. Smith, Robert P. Lin, K Hurley, Wayne Coburn, G J. Hurford, Claudia Wigger, W Hajdas, Alex Zehnder, Mark L. Mcconnell

Space Science Center

The Reuven Ramaty High Energy Solar Spectroscopic Imager (RHESSI) is a NASA Small Explorer satellite designed to study hard x-ray and gamma-ray emission from solar flares. In addition, its high-resolution array of germanium detectors can see photons from high-energy sources throughout the Universe. Here we discuss the various algorithms necessary to extract spectra, lightcurves, and other information about cosmic gamma-ray bursts, pulsars, and other astrophysical phenomena using an unpointed, spinning array of detectors. We show some preliminary results and discuss our plans for future analyses. All RHESSI data are public, and scientists interested in participating should contact the principal author.

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Hard X-Ray Polarimeter For Gamma-Ray Bursts And Solar Flares, Mark L. Mcconnell, J Ledoux, John R. Macri, James M. Ryan Mar 2003

Hard X-Ray Polarimeter For Gamma-Ray Bursts And Solar Flares, Mark L. Mcconnell, J Ledoux, John R. Macri, James M. Ryan

Space Science Center

We report on the development of a dedicated polarimeter design that is capable of studying the linear polarization of hard X-rays (50-300 keV) from gamma-ray bursts and solar flares. This compact design, based on the use of a large area position-sensitive PMT (PSPMT), is referred to as GRAPE (Gamma-RAy Polarimeter Experiment). The PSPMT is used to determine the Compton interaction location within an array of small plastic scintillator elements. Some of the photons that scatter within the plastic scintillator array are subsequently absorbed by a small centrally-located array of CsI(Tl) crystals that is read out by an independent multi-anode PMT. …

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Fusing Information In A 3d Chart-Of-The-Future Display, Roland J. Arsenault, Matthew D. Plumlee, Shep M. Smith Lt, Colin Ware, Rick Brennan, Larry A. Mayer Mar 2003

Fusing Information In A 3d Chart-Of-The-Future Display, Roland J. Arsenault, Matthew D. Plumlee, Shep M. Smith Lt, Colin Ware, Rick Brennan, Larry A. Mayer

Center for Coastal and Ocean Mapping

No abstract provided.

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Providing The Third Dimension: High-Resolution Multibeam Sonar As A Tool For Archaeological Investigations - An Example From The D-Day Beaches Of Normandy, Larry A. Mayer, Brian R. Calder, J S. Schmidt, C Malzone Mar 2003

Providing The Third Dimension: High-Resolution Multibeam Sonar As A Tool For Archaeological Investigations - An Example From The D-Day Beaches Of Normandy, Larry A. Mayer, Brian R. Calder, J S. Schmidt, C Malzone

Center for Coastal and Ocean Mapping

In general, marine archaeological investigations begin in the archives, using historic maps, coast surveys, and other materials, to define submerged areas suspected to contain potentially significant historical sites. Following this research phase, a typical archaeological survey uses sidescan sonar and marine magnetometers as initial search tools. Targets are then examined through direct observation by divers, video, or photographs. Magnetometers can demonstrate the presence, absence, and relative susceptibility of ferrous objects but provide little indication of the nature of the target. Sidescan sonar can present a clear image of the overall nature of a target and its surrounding environment, but the …

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Marine Information Objects (Mio) And Ecdis: Concept And Practice, Lee Alexander Mar 2003

Marine Information Objects (Mio) And Ecdis: Concept And Practice, Lee Alexander

Center for Coastal and Ocean Mapping

Marine Information Objects (MIOs) consist of chart- and navigation-related information that supplement the minimum information required by ECDIS to ensure safety of navigation at sea. As related to the use of Electronic Navigational Chart (ENC) data, MIOs are additional, non-mandatory information not already covered by existing IMO, IHO, or IEC standards. Such information includes ice coverage, tide/water level, current flow, meteorological, oceanographic, and marine habitats. A Harmonization Group on MIOs (HGMIO) has been established between IHO and IEC to recommend additional data and display specifications that may be incorporated into future editions of IHO and IEC standards. This paper discusses …

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Electronic Chart Of The Future: The Hampton Roads Project, Rick Brennan, Colin Ware, Lee Alexander, Andy Armstrong, Larry A. Mayer, Lloyd C. Huff, Brian R. Calder, Shep M. Smith Lt, Matthew D. Plumlee, Roland J. Arsenault, Gerd Glang Mar 2003

Electronic Chart Of The Future: The Hampton Roads Project, Rick Brennan, Colin Ware, Lee Alexander, Andy Armstrong, Larry A. Mayer, Lloyd C. Huff, Brian R. Calder, Shep M. Smith Lt, Matthew D. Plumlee, Roland J. Arsenault, Gerd Glang

Center for Coastal and Ocean Mapping

ECDIS is evolving from a two-dimensional static display of chart-related data to a decision support system capable of providing real-time or forecast information. While there may not be consensus on how this will occur, it is clear that to do this, ENC data and the shipboard display environment must incorporate both depth and time in an intuitively understandable way. Currently, we have the ability to conduct high-density hydrographic surveys capable of producing ENCs with decimeter contour intervals or depth areas. Yet, our existing systems and specifications do not provide for a full utilization of this capability. Ideally, a mariner should …

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Fusing Information In A 3d Chart-Of-The-Future Display, Roland J. Arsenault, Shep M. Smith Lt, Colin Ware, Larry A. Mayer, Matthew D. Plumlee Mar 2003

Fusing Information In A 3d Chart-Of-The-Future Display, Roland J. Arsenault, Shep M. Smith Lt, Colin Ware, Larry A. Mayer, Matthew D. Plumlee

Center for Coastal and Ocean Mapping

The Data Visualization Research Lab at the Center for Coastal and Ocean Mapping is investigating how three-dimensional navigational displays can most effectively be constructed. This effort is progressing along multiple paths and is implemented in the GeoNav3D system, a 3D chart-of-the-future research prototype. We present two lines of investigation here. First, we explore how tide, depth, and planning information can be combined (fused) into a single view, in order to give the user a more realistic picture of effective water depths. In the GeoNav3D system, 3D shaded bathymetry, coded for color depth, is used to display navigable areas. As in …

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