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Annual International Conference of the IEEE engineering in Medicine and Biology Society (EMBC)

作者： M. Aboy J. McNames D. Cuesta-Frau W. Wakeland T. Thong S. Lai B. Goldstein Biomedical Signal Processing Laboratory Electrical and Computer Engineering Portland State University Portland OR USA Computer Vision Group ETS-Alcoi Polytechnic University of Valencia Spain Systems Science Ph.D. Program Portland State University Portland OR USA Biomedical Engineering OGI School of Science and Engineering Oregon Health and Sciences University Portland OR USA Complex Systems Laboratory Department of Pediatrics Oregon Health and Sciences University Portland OR USA

We investigated the relationship between the intracranial pulse pressure (ICP/sub PP/) and the mean intracranial pressure (ICP/sub M/). In adult patients, several research groups have described a linear relationship between ICP/sub PP/ and ICP/sub M/ within the range of cerebral autoregulation. Current monitoring and therapy are mainly based on the mean ICP/sub M/, since it is believed that the ICP/sub M/ contains most of the information provided by the other pulse morphology metrics. In this paper we attempt to answer whether there is further information within the ICP morphology not explained by ICP/sub M/ that might be of prognostic significance. We screened ICP records of 42 patients admitted to the Pediatric Intensive Care Unit at Doernbecher Children's Hospital for segments in which the ICP/sub M/ varied at least 5 mmHg during a 1-hour period. We found 54 segments in 9 different pediatric TBI patients (ages 0.2-17.8 years, mean=9.9 years). ICP/sub PP/ and ICP/sub M/ were calculated for each pulse using an automatic pressure detection algorithm. The coefficient of linear correlation r was > 0.70 in 43/54 segments (p < 0.001), which indicates that there exists a linear relationship between ICP/sub PP/ and ICP/sub M/. However, we found r > 0.90 only in 16/54 segments (p=NS) . This result and visual inspection of ICP/sub PP/ vs. ICP/sub M/ density plots suggest that ICP pulse pressure is not fully explained by the ICP M.

关键词： Cranial pressure Morphology Brain injuries Iterative closest point algorithm Pediatrics Patient monitoring Medical treatment Hospitals Detection algorithms Inspection

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Real-time embedded system support for the BTeV level 1 muon trigger

Real-time embedded system support for the BTeV level 1 muon ...

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2003 IEEE Nuclear science Symposium Conference Record - Nuclear science Symposium, Medical Imaging Conference

作者： Haney, Michael J. Beauregard, D. Iyer, R. Kalbarczyk, Z. Liu, Q. Wang, L. Haney, M. Selen, M. Mosse, D. Shigiltchoff, O. Chopade, R. Hovey, L. Jung, M. Messie, D. Oh, J. Stone, S. Bapty, T. Neema, S. Nordstrom, S. Shetty, S. Vashishtha, S. Yao, D. Sheldon, P. Vaandering, E. Butler, J. Gottschalk, E. Kowalkowski, J. Votava, M. Appel, J. University of Illinois Urbana IL 61801 United States Des./Validation Reliable N.S.R.G. University of Illinois High Energy Physics Group Department of Physics University of Illinois Department of Computer Science Coll. in High Sch. Educ. Program University of Pittsburgh Department of Electrical Engineering Syracuse University High Energy Physics Group Department of Physics Syracuse University Inst. for Software Intgd. Systems Vanderbilt University Department of Physics BTeV Group Vanderbilt University BTeV Collaboration Particle Physics Division Fermi Natl. Accelerator Laboratory Computing Division Fermi Natl. Accelerator Laboratory Fermilab Education Office Fermi Natl. Accelerator Laboratory

The Level 1 Muon Trigger subsystem for BTeV will be implemented using the same architectural building blocks as the BTeV Level 1 Pixel Trigger: pipelined field programmable gate arrays feeding a farm of dedicated processing elements. The muon trigger algorithm identifies candidate tracks, and is sensitive to the muon charge (sign);candidate dimuon events are identified by complementary charge track-pairs. To insure that the trigger is operating effectively, the trigger development team is actively collaborating in an independent multi-university research program for reliable, self-aware, fault adaptive behavior in real-time embedded systems (RTES). Key elements of the architecture, algorithm, performance, and engineered reliability are presented.

关键词： Embedded systems

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Human systems integration and advanced technology in engineering department workload and manpower reduction

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NAVAL ENGINEERS JOURNAL 2003年第1期115卷 57-65页

作者： Lively, KA Seman, AJ Kirkpatrick, M KENNETH A. LIVELY graduated from the University of Colorado with a BS in applied mathematics and an MS in mathematics in 1976 and from the Massachusetts Institute of Technology with an MS in electrical engineering and the degree ocean engineer in naval architecture and marine engineering in 1984. He retired from the U.S. Navy in 1989 after 23 years of service. Assignments included electrical officer on the USS Constellation (CV 64) project engineer for the DDG 51 machinery control system (NAVSEA) and DDG 51 Technical Director (NAVSEA). He was vice president of the PDI Division of Bird-Johnson Company from July 1989 to November 1998 where he managed various gas turbine and machinery controls related development projects. He joined Anteon Corporation's Systems Engineering Group as senior controls engineer in December 1998 where he provided technical support to the integrated power systems program (NAVSEA PMS 510) and managed the Office of Naval Research Afloat Laboratory. DR. MARK KIRKPATRICK is currently an independent consultant in human factors and work-load/manning analysis and modeling. He holds a Ph.D. degree in experimental psychology from The Ohio State University and has 34 years of experience in applied human factors. From 1982 through 2000 Dr. Kirkpatrick served as the senior vice president of Carlow International. Prior to joining Carlow in 1982 Dr. Kirkpatrick served as a member of the technical staff at North American Rockwell's Missiles Division and as a project director and vice president for Essex Corporation. His areas of expertise include workload simulation task analysis operator-in-the-loop simulation human performance experimentation statistical analysis and human factors T&E. He has directed and/or participated in human factors projects for the U.S. Navy U.S. Army NASA Department of Transportation the U.S. Nuclear Regulatory Commission and private industry. ANTHONY J. SEMAN III is the technical manager for the reduced ship's crew by virtual presence (RSVP) advanced technology d

Aboard current ships, such as the DDG 51, engineering control and damage control activities are manpower intensive. It is anticipated that, for future combatants, the workload demand arising from operation of systems under conditions of normal steaming and during casualty response will need to be markedly reduced via automated monitoring, autonomous control, and other technology initiatives. Current DDG 51 class ships can be considered as a manpower baseline and under Condition III typical engineering control involves seven to eight watchstanders at manned stations in the Central Control Station, the engine rooms and other machinery spaces. In contrast to this manning level, initiatives such as DD 21 and the integrated engineering plant (IEP) envision a partnership between the operator and the automation system, with more and more of the operator's functions being shifted to the automation system as manning levels decrease. This paper describes some human systems integration studies of workload demand reduction and, consequently, manning reduction that can be achieved due to application of several advanced technology concepts. Advanced system concept studies in relation to workload demand are described and reviewed including. Piecemeal applications of diverse automation and remote control technology concepts to selected high driver tasks in current DDG 51 activities. Development of the reduced ship's crew by virtual presence system that will provide automated monitoring and display to operators of machinery health, compartment conditions, and personnel health. The IEP envisions the machinery control system as a provider of resources that are used by various consumers around the ship. Resource needs and consumer priorities are at all times dependent upon the ship's current mission and the availability of equipment pawnbrokers.

关键词： Naval warfare

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High Speed, High Resolution Capable Optical Delay Une for Imaging Transient Blologlcal Function with Optical Coherence Tomography

High Speed, High Resolution Capable Optical Delay Une for Im...

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Conference on Lasers and Electro-Optics, CLEO 2002

作者： Reynolds, J. Joshua Marks, Daniel L. Schaefer, Alex W. Boppart, Stephen A. Beckman Institute for Advanced Science and Technology Department of Electrical and Computer Engineering University of Illinois at Urbana-Champaign United States Beckman Institute for Advanced Science and Technology Department of Electrical and Computer EngineeringBioengineering College of Medicine UIUC United States

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Novel approach to quantitative oximetry of breast lesions using two ad hoc near-infrared wavelengths

Novel approach to quantitative oximetry of breast lesions us...

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Biomedical Topical Meeting, BIOMED 2002

作者： Heffer, Erica L. Fantini, Sergio Bioengineering Center Department of Electrical Engineering and Computer Science Tufts University 4 Colby Street MedfordMA02155 United States

We present a robust and non-invasive optical method to accurately measure the oxygen saturation of hemoglobin in breast lesions, introducing the concept that the optimal wavelength pair is dependent on the lesion oxyg... 详细信息

ISBN: (纸本)1557527024

关键词： Infrared devices

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Spectral imaging of the human breast for cancer detection

Spectral imaging of the human breast for cancer detection

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Biomedical Topical Meeting, BIOMED 2002

作者： Fantini, Sergio Heffer, Erica L. Bioengineering Center Department of Electrical Engineering and Computer Science Tufts University 4 Colby Street MedfordMA02155 United States

We present a novel spectral imaging approach for quantitative oximetry of breast tumors. This approach identifies and uses two optimal wavelengths that vary from case to case. © 2001 Optical Society of America.

ISBN: (纸本)1557527024

关键词： Spectroscopy

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A multidisciplinary course sequence for first-year engineering students

A multidisciplinary course sequence for first-year engineeri...

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2002 ASEE Annual Conference and Exposition: Vive L'ingenieur

作者： Brockman, Jay B. Fuja, Thomas E. Batill, Stephen M. University of Notre Dame Department of Computer Science University of Notre Dame Department of Electrical Engineering University of Notre Dame Educational Program College of Engineering University of Notre Dame

The University of Notre Dame has developed a new first year engineering program, and central to that program is a two-course sequence entitled "Introduction to engineering Systems." These courses use a sequence of team-based, multidisciplinary projects to introduce students to the engineering profession and to assist them in developing fundamental problem-solving skills common to all engineering disciplines. This paper describes how these new courses were developed and outlines the learning objectives for the courses. It includes details on the implementation of the courses and the four projects that are central to these two courses. The paper details the ongoing assessment activities and the progress toward achieving the various desired outcomes set-forth for the courses.

关键词： Students

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Concurrent cerebral near-infrared spectroscopy and electroencephalography during all-night sleep

Concurrent cerebral near-infrared spectroscopy and electroen...

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Biomedical Topical Meeting, BIOMED 2002

作者： Aggarwal, Payal Chen, Kathleen Franceschini, Maria Angela Ehrenberg, Bruce L. Fantini, Sergio Bioengineering Center Department of Electrical Engineering and Computer Science Tufts University MedfordMA02155 United States Department of Neurology Tufts University School of Medicine New England Medical Center BostonMA02111 United States

We have performed near-infrared spectroscopy on the forehead of human subjects during all-night sleep. The evolution of the sleep stages during the night has been identified by electroencephalography. © 2001 Opti... 详细信息

ISBN: (纸本)1557527024

关键词： Infrared devices

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Monitoring Cerebral Hemodynamics Using Near-Infrared Spectroscopy During Electro-Convulsive Therapy

Monitoring Cerebral Hemodynamics Using Near-Infrared Spectro...

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Biomedical Topical Meeting, BIOMED 2002

作者： Nadgir, S. Fantini, S. Renshaw, P.F. Henry, M. Franceschini, M.A. Bioengineering Center Department of Electrical Engineering and Computer Science Tufts University 4 Colby Street MedfordMA02155 United States McLean Hospital 115 Mill St. BelmontMA02478 United States

Near-Infrared Spectroscopy (NIRS) is an effective technique for monitoring cerebral hemodynamics and oxygenation. We report a study of the cerebral hemoglobin concentration changes during electro- convulsive therapy (... 详细信息

ISBN: (纸本)1557527024

关键词： Infrared devices

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Adaptation of current signals with floating-gate circuits

Adaptation of current signals with floating-gate circuits

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作者： Pesavento, Alberto Horiuchi, Timothy Diorio, Chris Koch, Christof Department of Electrical Engineering California Institute of Technology Pasadena CA 91125 United States Department of Electrical and Computer Engineering University of Maryland College Park MD 20742 United States Department of Computer Science and Engineering University of Washington Seattle WA 98195-2350 United States Computation and Neural Systems Program California Institute of Technology Pasadena CA 91125 United States

In this paper we present a new, adaptive spatial-derivative circuit for CMOS image sensors. The circuit removes its offset as a natural part of its operation using a combination of electron tunneling and hot-electron injection to add or remove charge on a floating-gate of an auto-zeroing amplifier. We designed, fabricated and successfully tested a chip with the circuit. Test results show that the circuit reduces the offsets by more than an order of magnitude.

关键词： Image sensors

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