| Identification and Application of Quantum Trajectories in Above-Threshold Ionization |
2002 |
6 pages |
| Authors:
G. G. Paulus; F. Grasbon; H. Walther; R. Kopold; W. Becker; MAX-PLANCK-INST FUER QUANTENOPTIK GARCHING (GERMANY F R)
|
 | We discuss two recent photoionization experiments with atoms in intense laser fields: First we study the dependence of photoelectron spectra on the intensity of the laser pulse. In a second experiment a photoelectron spectrum for elliptical polarization is discussed. With a quantum mechanical model the contribution of specific electron trajectories to the photoelectron spectra can be analyzed. In the presented cases, trajectories with long travel times are of significant importance. ... |
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| Enhanced Doppler Picture Velocimetry (DPV) for Planar Velocity Measurements in High Speed Shock Tunnel Flow |
2002 |
|
| Authors:
F. Seiler; A. George; F. Leopold; M. Havermann; J. Srulijes; INSTITUT FRANCO-ALLEMAND DE RECHERCHES SAINT-LOUIS (FRANCE)
|
 | A technique for visualizing a velocity field in an entire plane has been developed by taking so-called "Doppler Pictures" using Michelson interferometry. With the Doppler Picture Velocimetry (DPV) information about the instantaneous and local velocities of tracers passing through a light sheet are available. The tracer particles are illuminated by a laser light source and the frequency of the scattered light, in case of moving particles, is shifted by the ... |
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| Student Guide for the Education, Business, Technical and Science Departments (EGTWA) Studies at the Armed Forces Universit Hamburg, including the Course Offerings for the Academic Year 2001/2002 (Studienfuehrer fuer die erziehungs-, gesellschafts-, techni |
2002 |
|
| Authors:
UNIVERSITAET DER BUNDESWEHR HAMBURG (GERMANY F R)
|
| A standard college/university guide for students. There is general information on EGTWA programs, including organizational chart. Included are course descriptions, along with instructor, semester and time. The university is on a tri-semester schedule. |
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| Personal- und Vorlesungsverzeichnis: Wintertrimester 2002 (Index of Faculty and Courses: Winter Trimester 2002) |
2002 |
|
| Authors:
UNIVERSITAET DER BUNDESWEHR MUENCHEN NEUBIBERG (GERMANY F R) FAKULTAET FUER LUFT- UND RAUMFAHRTTECHNIK
|
| Index contains the names of the faculty of the University of the Federal Armed Forces and the courses offered there in the Winter of 2002. Also furnished are maps of the campus and the names of the administrative staff. |
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| Die Vereinten Nationen: Aufgaben Instrumente und Reformen(The United Nations: Tasks, Instruments and Reforms) |
2002 |
|
| Authors:
Sven B. Gareis; Johannes Varwick; SOZIAL WISSENSCHAFTLICHES INST DER BUNDESWEHR STRAUSBERG (GERMANY)
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| This compendium features ten articles on the most pressing issues concerning the present and future of the United Nations. The issues include, most importantly, how globalization will alter the goals and assignments of the embattled organization. The authors tend towards the prescriptive, floating recommendations (especially with the environmental problems covered) with detailed accounts of how the levers of power and authority actually function. Yet a smoothness and cohesiveness convert the ... |
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| Self-Inflicted Wound Allied Defeat in Crete, May 1941 |
2002 |
60 pages |
| Authors:
Andrew J. Kostic; MARINE CORPS COMMAND AND STAFF COLL QUANTICO VA
|
| Early in World War II Great Britain and Germany both identified the strategic importance of the island of Crete for conducting military operations in the Mediterranean. The Allies began defending Crete in November 1940 but only committed limited resources and personnel until allied intelligence uncovered the details of the German invasion plan for Crete, Operation MERCURY. In a last ditch effort, Allied forces evacuated from Greece were sent to Crete ... |
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| Personal- und Vorlesungsverzeichnis: Wintertrimester 2002)Index of Faculty and Courses: Winter Trimester 2002 |
2002 |
|
| Authors:
UNIVERSITAET DER BUNDESWEHR MUENCHEN NEUBIBERG (GERMANY F R)
|
| Index contains the names of the faculty of the University of the Federal Armed Forces and the courses offered there in the Winter of 2002. Also furnished are maps of the campus and the names of the administrative staff. |
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| Swinging the Sledgehammer: The Combat Effectiveness of German Heavy Tank Battalions in World War II |
2002 |
150 pages |
| Authors:
Christopher W. Wilbeck; ARMY COMMAND AND GENERAL STAFF COLL FORT LEAVENWORTH KS SCHOOL OF ADVANCED MILITARY STUDIES
|
| This thesis is a historical analysis of the combat effectiveness of the German schwere Panzer-Abteilung or Heavy Tank Battalions during World War II. During the course of World War II, the German Army developed heavy tank battalions to fulfill the concept of breaking through enemy defenses so faster, lighter mechanized forces could exploit the rupture. These heavy tank battalions had several different tables of organization, but were always centered around ... |
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| The Phony War 2002: How the West Through Their Unwisdom, Carelessness, and Good Nature Allowed the Wicked to Rearm |
2002 |
6 pages |
| Authors:
J. N. Williams; MARINE CORPS WARFIGHTING LAB QUANTICO VA
|
| In 1939, after France and England had declared war on Germany, U.S. newspapers described the period of desultory military activity as the Phony War. In England it was known as the Twilight War, and in Germany, Sitzkrieg. We are today, engaged in just such a phony war. This is an analogy worthy of our consideration, for just as in the early stages of World War II when opportunities were missed ... |
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| European Union, NATO SOFA, and the Challenges Ahead for US Military Operations |
2002 |
63 pages |
| Authors:
Michael J. McCormick; JUDGE ADVOCATE GENERAL'S SCHOOL CHARLOTTESVILLE VA
|
| Most Americans first heard of the European Union with the mandatory introduction of the Euro into 12 of its member countries on 1 January 2002.1 However, the European Union has been in existence for the latter half of the 20th Century. As a European Union commentator has stated, For some it is simply a set of intergovernmental institutions, useful for specific purposes, but without any wider implications. For others, it ... |
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| Maintenance and Repair Type Contracts Awarded by the U.S. Army Corps of Engineers Europe |
05 DEC 2001 |
42 pages |
| Authors:
INSPECTOR GENERAL DEPT OF DEFENSE ARLINGTON VA
|
| The Defense Criminal Investigative Service and the U.S. Army Criminal Investigations Command requested an audit of maintenance and repair type contracts awarded by the U.S. Army Corps of Engineers Europe, Wiesbaden, Germany. The U.S. Army Corps of Engineers Europe provides engineering support to military personnel, their families, and civilians in Europe. The engineering support includes technical and contracting support for the maintenance and repair of real property. The U.S. Army, ... |
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| Post-Reunification German Military Involvement in International Crises; Foreign and Security Policy Commensurate with National Sovereignty |
DEC 2001 |
61 pages |
| Authors:
Howard C. Eyth; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| This thesis examines past and present instances of German military intervention in international crises since national reunification on 3 October 1990 as a basis for evaluating the evolutionary progress Germany has made in addressing issues of international security during the same period. It assesses Germany's accomplishments in context of the challenges posed to German political, social, and military elites in justifying to their constituencies and communities, German leadership commensurate with ... |
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| L'Armement-Recherche civile, Recherche de defense (Armament-Civil and Defense Research) |
DEC 2001 |
|
| Authors:
CHEAR/DPAR SEVRES (FRANCE)
|
| This issue of L'Armement discusses new directions in civil and defense research. Following the end of the Cold War, pressure on defense budgets had a disproportionate impact on basic research. To compensate for reduced funding, research was closely targets to defense requirements. The General Delegation for aMmarnents (Delegation Generale pour l'Armernent) established research priorities based on Frances's and Europe's projected technology needs in 2012. This planning resulting in a 10 ... |
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| The Political Views of Students at the Universities of the Armed Forces in Comparison to Those of Students at Public Institutions (Die politischen Orientierungen der Studenten an den Universitaeten der Bundeswehr im Vergleich zu den Studenten an oeffentli |
DEC 2001 |
35 pages |
| Authors:
A. Bonnemann; C. Posner; UNIVERSITAET DER BUNDESWEHR HAMBURG (GERMANY F R)
|
| The generally conveyed image of the soldier and the profession of the officer generally tend towards the conservative, and the results of the current study convincingly confirm this stereotype. This fact is true in particular through the given opportunity of comparing these views with those of students at national, i.e. public universities. On the seven-level continuum (extremely left-wing being 1, extremely conservative being 7) of political opinion, 43 percent of ... |
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| Contact Detonations and Impact/Penetration Problems: Demonstration of a Procedure to Establish Guidelines for Reliable and Safe Numerical Simulations |
26 NOV 2001 |
|
| Authors:
F. N. Gebbeken; Max Ruppert; UNIVERSITAET DER BUNDESWEHR MUENCHEN NEUBIBERG (GERMANY F R)
|
| One goal of the research initiative is to foster both the correct commercial code development and its proper use for the benefit of research and technological development. The objectives are to: define the problem of software code verification and validation, define the problem of precision testing for software code verification and validation, establish guidelines for reliable and safe numerical simulations, develop standards for numerical simulations, and define qualifications and requirements ... |
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| Update on Time and Frequency Activities at PTB |
01-Nov-2001 |
9 pages |
| Authors:
Peter Hetzel; Andreas Bauch; PHYSIKALISCH-TECHNISCHE BUNDESANSTALT BRAUNSCHWEIG (GERMANY)
|
| The activities in the field of time and frequency metrology pursued at PTB are reviewed. Among the recent milestones have been the development and quasi-continuous operation of a cesium fountain frequency standard, the realization of a free atomic time scale TAF (PTB) based on the fountain results, and the cooperation in international time comparison projects using GPS carrier-phase receivers and TWSTFT in Ku-band and X-band. |
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| Stationaeres und instationares Verhalten von zwei gekoppelten Waermeuebertragern mit umlaufendem Fluidstrom (Stationary and Non-Stationary Behavior of Two Coupled Heat Exchangers with Circuitous Fluid Flow) |
NOV 2001 |
|
| Authors:
Chakkrit NaRanong; UNIVERSITAET DER BUNDESWEHR HAMBURG (GERMANY) FACHBEREICH MASCHINENBAU
|
| This dissertation covers the following subjects: the optimization of stationary usage; methods of approach in the testing of non-stationary behavior, including basic equations; calculation of non-stationary behavior with the Laplace transformation; calculation of non-stationary behavior using the Finite Difference method; examples of non-stationary behavior. The final chapter is a summary of the test results, divided categorically: stationary terminal state; differential equations for the calculation of fields of dimensionless temperature fluctuations; ... |
|
| Fluorescence from Coated Oxide Nanoparticles |
NOV 2001 |
6 pages |
| Authors:
D. Vollath; I. Lamparth; D. V. Szabo; FORSCHUNGSZENTRUM KARLSRUHE (GERMANY) INST FUER MATERIALFORSCHUNG
|
| In many cases, coated nanoparticles behave like isolated ones. Using the microwave plasma process, it is possible to produce oxide nanoparticles with ceramic or polymer coating. Coating the particles has the additional advantage that by proper selection of the coating it is possible to suspend the particles in distilled water without using any colloid stabilizer. From quantum dots made of sulfides or selenides, it is well known from literature that ... |
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| Soft Reverse Current-Voltage Characteristics in V2O5 Nanofiber Junctions |
NOV 2001 |
6 pages |
| Authors:
Gyu-Tae Kim; Jorg Muster; Marko Burghard; Siegmar Roth; MAX-PLANCK-INST FUER FESTKOERPERFORSCHUNG STUTTGART (GERMANY F R)
|
| V2O5 nanofibers showed the rectifying current-voltage characteristics under an asymmetric contact configuration at room temperature, indicating the formation of a Schottky diode. The ideality factors as a Schottky diode were estimated to be 6.1 at the forward bias and 1.4 at the reverse bias. The larger current at the reverse bias defined by the negative voltage at the metal electrode may originate from the contribution of the tunneling via field ... |
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| In-Situ Analysis of the Chemical Vapor Synthesis of Nanocrystalline Silicon Carbide by Aerosol Mass Spectrometry |
NOV 2001 |
6 pages |
| Authors:
In-Kyum Lee; Markus Winterer; Horst Hahn; Christian Janzen; Dirk Lindackers; DARMSTADT UNIV OF TECHNOLOGY (GERMANY)MATERIALS SCIENCE DEPT
|
| An Aerosol Mass Spectrometer (AMS) is a combination of a Quadrupol- (QMS) and a Particle Mass Spectrometer (PMS) and enables the in-situ analysis of gas phase processes for the generation of nanoparticles. Size distributions of ultrafine silicon carbide particles in the range of 10 atomic mass units (amu) to amu are measured in the PMS. Simultaneously, molecular species up to 300 amu can be detected in the QMS. Aerosols containing ... |
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| Quality Management in Sleep Medicine via Telemedicine: Overseas Online Transfer of Polysomnograms via Internet |
NOV 2001 |
6 pages |
| Authors:
David Kristo; WALTER REED ARMY MEDICAL CENTER WASHINGTON DC
|
| In summary, the goal of our project is to evaluate the transfer of polysomnographicies via the Internet using the File Transfer Protocol (FTP), from the Landstuhl Regional Medical Center (LRMC), Germany to the Walter Reed Army Medical Center (WRAMC), Washington, DC. WRAMC specialized staff will compare the results of scoring and interpretation of the sleep studies done at WRAMC with the results of the non specialized staff at the remote ... |
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| Robotic and Virtual Slide Telepathology |
NOV 2001 |
7 pages |
| Authors:
Keith J. Kaplan; WALTER REED ARMY MEDICAL CENTER WASHINGTON DC
|
| To date, we have reviewed several frozen section (FS) pathology cases in a retrospective fashion with remote, robotic real-time telepathology (TP). The telepathologist is given the usual clinical information with regard to organ site, sex and age of the patient and any pertinent clinical/radiographic information that was available on the surgical pathology tissue examination request form at the time of the intraoperative consultation. Each case is evaluated by TP without ... |
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| Stretch Activated ION Channels in Myocytes: Parameter Estimation, Simulations and Phenomena |
25 OCT 2001 |
|
| Authors:
F. B. Sachse; C. Riedel; G. Seemann; C. D. Werner; KARLSRUHE UNIV (GERMANY F R)
|
| Mechanosensitive ion channels influence the electrophysiological state of cardiac myocytes. An examination of the mechanisms of mechano- electrical coupling on cellular level by the mechanosensitive ion channels was performed. Simulations with a detailed electrophysiological model were carried out. Static stretch leaded to an increase of the resting potential and a decrease of the duration of the action potential with increasing sarcomere length. Dynamic stretch delivered a variety of phenomena depending ... |
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| Accreditation of Biomedical Engineering Programs in Europe - Challenge and Opportunity |
25 OCT 2001 |
|
| Authors:
Joachim H. Nagel; STUTTGART UNIV (GERMANY F R)
|
| Today, more than 100 universities and polytechnic schools in Europe offer educational programs in Biomedical Engineering at all academic levels, but without any international coordination of contents and required qualifications. Transnational mobility for education, training and employment is an essential objective of the European Union. Such mobility is difficult to achieve because of different national practices in education, training and employment and in recognition of outcomes and accreditation. Accreditation plays ... |
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| Coherence Analysis of the Ongoing EEG by Means of Microstates of Synchronous Oscillations |
25 OCT 2001 |
|
| Authors:
B. Schack; G. Seidel; W. Krause; F. Heinrich; U. Krause; JENA UNIV (GERMANY) INST OF MEDICAL STATISTICS
|
| The sensitivity of instantaneous EEG coherence for the investigation of elementary thinking processes was shown by several authors. Similarly to EP analysis the statistical validation of the results is based on the multiple repetition of the same task. This approach is not possible for complex unreproducible thinking processes of long duration as e.g., solving mathematical problems. Classical coherence analysis of long periods of the EEG suffers from the loss of ... |
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| Application of Multiobjective Genetic Algorithms in Anatomy Based Dose Optimization in Brachytherapy and its Comparation with Deterministic Algorithms |
25 OCT 2001 |
|
| Authors:
Natasa B. Milickovic; Michael Lahanas; Maria Papgiannopoulou; Kostas Karouzakis; Dimos Baltas; STADISCHE KLINIKEN OFFENENBACH (GERMANY)
|
| In High Dose Rate (HDR) brachytherapy the conventional dose optimization algorithms consider the multiple objectives in the form of an aggregate function which combines individual objectives into a single utility value, As a result, the optimization problem becomes single objective, prior to optimization. Up to 300 parameters must be optimized satisfying objectives which are often competing. We use multiobjective dose optimization methods where the objectives are expressed in terms of ... |
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| Profuse and Selective Growth in vitro of Rat Spinal Axons on a Micro- Patterned Poly (ethylene imine) Grid |
25 OCT 2001 |
|
| Authors:
J. M. Mouveroux; E. A. Lakke; E. Marani; M. Stelztle; UNIVERSITY HOSPITAL LEIDEN (NETHERLANDS)
|
| To distribute neurites (axons) along a surface and to guide them towards specific point targets we cultured spinal cord explants on coverslips printed with a micro-patterned grid of poly (ethylene imine) (PEI) lanes. The grid was prepared by micro-contact printing with silicone stamps. Spinal cord explants were resected from neonatal rats. A tiny bunch of glass filaments was used to ensure adhesion of the explant to the coverslip. One end ... |
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| LED-Based Micro Display for an Intraocular Vision Aid (IOVA) |
25 OCT 2001 |
|
| Authors:
D. Puettjer; F. Praemassing; R. Buss; D. Jaeger; GERHARD MERCATOR UNIV DUISBURG (GERMANY)
|
| In this Paper a micro display for an intraocular vision aid (IOVA) projecting an image of the environment onto the retina is presented, The display comprises an image of an array made out of single LED pixels, It is connected to a CMOS driver circuit using flip-chip technique, Since micro lenses have to be integrated into the substrate material for proper image projection onto the retina the generated light has ... |
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| Active Shielding in Measurements of DC Near Biomagnetic Fields |
25 OCT 2001 |
|
| Authors:
H. Nowak; J. Haueisen; M. Ziolkowski; F. Resmer; J. Schueler; JENA UNIV (GERMANY) DEPT OF NEUROLOGY
|
| Measurements of DC near biomagnetic fields are disturbed by low frequency noise, that are not reduced sufficiently by most of the magnetically shielded rooms or gradiometers. An effective SQUID based active shielding system has been developed and installed at the magnetically shielded rooms in the Biomagnetic Center of the University Jena to reduce external low frequency disturbances. A reduction of the magnetic noise of about 23 dB could be achieved ... |
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| Reducing Insertion Sites of Penetrating Multipolar Shaft Electrodes by Double Side Electrode Arrangement |
25 OCT 2001 |
|
| Authors:
T. Stieglitz; P. Heiduschka; M. Schuettler; M. Gross; FRAUNHOFER INST FOR BIOMEDICAL ENGINEERING (GERMANY) NEURAL PROSTHESES UNIT
|
| Micromachined devices with substrate-integrated electrodes are the key component in implantable microdevices for recording neuronal signals or stimulating nerves. For basic investigations in central and partially in peripheral nerve structures, silicon based shaft electrodes have established as standard multichannel device. In this paper, we present polyimide based multichannel shaft electrodes with a total thickness of 15 micrometers. The integration of interconnects and an interface to an commercially available connector made ... |
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| A State-Observer for Patient Status in Cardiac Surgery |
25 OCT 2001 |
|
| Authors:
E. Naujokat; U. Kiencke; KARLSRUHE UNIV (GERMANY) INST OF INDUSTRIAL INFORMATION TECHNOLOGY
|
| Today, control of extracorporeal perfusion the standard technique in cardiac surgery is achieved by perfusionists making short-term decisions based on their clinical experience and on data collected pre- and intraoperatively. But in spite of extensive monitoring postoperative complications occur which most probably are due to unrecognized complications during surgery. By extending monitoring towards the perfusion status of important inner organs and the patient's metabolic status, the assessment of the actual ... |
|
| Reducing Stiffness and Electrical Losses of High Channel Hybrid Nerve Cuff Electrodes |
25 OCT 2001 |
|
| Authors:
M. Schuettler; T. Stieglitz; M. Gross; D. Altpeter; A. Staiger; FRAUNHOFER INST FOR BIOMEDICAL ENGINEERING SANKT (GERMANY) NEURAL PROSTHESES UNIT
|
| For restoration of grasp in disabled people by means of functional electrical stimulation of peripheral nerves, 18 polar Hybrid Cuff Electrodes were developed. These electrodes consisted of a micromachined polyimide-based thin-film structure with integrated electrode contacts and interconnection lines which was glued to a silicone cuff. Interconnection lines were made of only 300 nm of sputtered gold, which led to high line drops. Cold electroplating was used to thicken the ... |
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| Hemodynamic Aspects of the Berlin Ventricle Assist Device |
25 OCT 2001 |
|
| Authors:
I. Avrahami; S. Einav; M. Rosenfeld; K. Affeld; TEL-AVIV UNIV (ISRAEL) DEPT OF BIOMEDICAL ENGINEERING
|
| A New Ventricle Assist Device (VAD), with an improved energy converter unit, was investigated both numerically and experimentally. An experimental Continuous Digital Particle Imaging Velocimetry (CDPIV) was combined with a computational fluid dynamics (CFD) analysis. These tools complement each other to result into a comprehensive description of the complex 3D, viscous and time-dependent flow field inside the artificial heart ventricle. A 3D numerical model was constructed to simulate the VAD ... |
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| Sleep Apnoea Detection in Single Channel ECGs by Analyzing Heart Rate Dynamics |
25 OCT 2001 |
|
| Authors:
C. W. Zywietz; V. von Einem; B. Widiger; G. Joseph; HANOVER MEDICAL SCHOOL (GERMANY) BIOSIGNAL PROCESSING
|
| Sleep apnea is often cause of/or associated with hypertension and of risk factors like "seconds sleep" during the day. Sleep disorders are typically investigated by means of polysomnographic recordings. We have analyzed 70 eight- hour single-channel ECG recordings to find out to which extent sleep apneas may be detected from the ECG alone. From the 70 data sets 35 were annotated by experts for phases of regular sleep and phases ... |
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| Non-Contact Measurement of the Electrical Impedance of Biological Tissue |
25 OCT 2001 |
|
| Authors:
C. H. Riedel; O. Doessel; KARLSRUHE UNIV (GERMANY F R) INST OF BIOENGINEERING
|
| The measurement of the impedance of biological tissue is a non- invasive method to find new data of diagnostic relevance. A danger in the impedance for example can give a prediction of the healing process of wounds or of skin irritations. The traditional way is to apply the current and measure the voltage with electrodes. This leads to stray capacitance between the electrodes as well as between the ground and ... |
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| Brain Surface Current Density Mapping in Pianists and Non-Pianists |
25 OCT 2001 |
|
| Authors:
J. Haueisen; T. R. Knoesche; FRIEDRICH-SCHILLER UNIV JENA (GERMAN DR)
|
| Brain surface current density reconstructions are widely used to analyze magnetoencephalographic data arising from electrical activity in the human brain. Commonly, this mapping is performed in single subjects. We present a methodology to apply brain surface current density mapping to group studies. The technique includes stepwise transformation of the magnetic sensors into a standard sensor system and linear scaling of individual heads in Talairach space. We demonstrate the usefulness of ... |
|
| Automatic Reconstruction of Catheters in CT Based Bracytherapy Treatment Planning |
25 OCT 2001 |
|
| Authors:
Natasa B. Milickovic; Dimos Baltasw; Nikolaos Zamboglu; NATIONAL TECHNICAL UNIV ATHENS (GREECE) INST OF COMMUNICATIONS AND COMPUTER SYSTEMS
|
| The aim of this study was to develop an automatic reconstruction of bracnhytherapy catheters using CT data, Previously no such automatic facility has existed in any treatment planning software, To achieve this aim we have developed algorithms for the automatic reconstruction (which we term autoreconstruction) of plastic and nietallic catheters, Our algorithuls overcome a nuniber of difficulties which arrise when a large number of catheters are present. These include situations ... |
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| Heart Rate Variability Analysis for Patients With Obstructive Sleep Apnea |
25 OCT 2001 |
|
| Authors:
H. Dickhaus; C. Maier; M. Bauch; HEIDELBERG UNIV (GERMANY) DEPT OF MED INFORMATICS
|
| Obstructive sleep apnea (OSA) is a common health concern associated with serious implications and increased cardiovascular morbidity and mortality. This study approaches the problem of identification OSA patients and detection of OSA phases on the basis of heart rate variability (HRV) analysis. Only a single ECC-channel is required for this purpose. We used data from the apnea ECC database 6: 40 patients with documented OSA and 20 controls divided into ... |
|
| Algorithms for Calculation of DRRs for Different Accelerator Voltages and Tools for Work with DRRs |
25 OCT 2001 |
|
| Authors:
Natasa B. Milickovic; Dimos Baltas; Nikolaos Zamboglu; STADISCHE KLINIKEN OFFENENBACH (GERMANY)
|
| The aim of this study was to develop algorithms for simulation of DRR calculation for different accelerator voltages, We also developed a number of useful tools for an application of DRRs in modern brachytherapy treatment planning, |
|
| Combination of AI Components for Biosignal Processing- Application to Sleep Stage Recognition |
25 OCT 2001 |
|
| Authors:
M. H. Schwaibold; T. Penzel; J. Schoechlin; A. Bolz; KARLSRUHE UNIV (GERMANY F R)
|
| We present a novel approach to combining artificial intelligence components for biomedical signal processing. The modular algorithm mimics the step-by-step type procedure of a human expert and includes the two assessment steps most important for sleep stage scoring, pattern recognition in electrophysiological signal channels and rule evaluation for classifying the current sequence of patterns. The application of sleep stage scoring is a complex task in medical informatics. The ARTISANA (artificial ... |
|
| Merging Telemedicine with Knowledge Management: The M2DM Project |
25 OCT 2001 |
|
| Authors:
R. Bellazzi; E. R. Carson; C. Cobelli; E. Hernando; E. J. Gomez; CITY UNIV LONDON (UNITED KINGDOM)
|
| This paper describes the EU-funded M2DM project which is developing multi-access services for the management of diabetes mellitus. Key features of the proposed system include the merging of telemedicine with knowledge management. The issues needing to be addressed in this connection are considered, together with the setting of the project within an overall systemic, model-based framework. |
|
| Fractal Dimension as a Feature for Adaptive Electroencephalogram Segmentation in Epilepsy |
25 OCT 2001 |
|
| Authors:
M. E. Kirlangic; D. Perez; S. Kudryavtseva; G. Griessbach; G. Henning; ILMENAU TECHNICAL UNIV (GERMANY) INST OF BIOMEDICAL ENGINEERING AND INFORMATICS
|
| In previous studies the fractal dimension (FD) has been shown to be a useful tool to detect non-stationarities and transients in biomedical signals like electroencephalogram (EEG) and electrocardiogram (ECG) The changes in FD are shown to characterise alterations in EEG due to changes in physiological states of brain, not only in normal but also in pathological functioning like epilepsy. The importance of long-term EEG monitoring for clinical evaluation ill epilepsy ... |
|
| Beaming Signal Sources in Measurement of Focal Visual Evoked Cortical Potentials |
25 OCT 2001 |
|
| Authors:
P. Husar; S. Berkes; G. Henning; K. U. Plagwitz; K. Schellhorn; ILMENAU TECHNICAL UNIV (GERMANY) DEPT OF BIOMEDICAL ENGINEERING
|
| VECPs (Visual Evoked Cortical Potential) after focal stimulation used in perimetry have weak amplitudes in comparison to the spontaneous EEG, thus the SNR (Signal-to-Noise Ratio) falls off down to -20dB and less. The shape of the VECP waves depends on several parameters and is unknown in general. Then for SNR enhancement and signal detection shape-independent methods can be used only. The most common of them is the stimulus synchronized averaging, ... |
|
| Development Aspects of a Robotised Gait Trainer for Neurological Rehabilitation |
25 OCT 2001 |
|
| Authors:
H. Schmidt; D. Sorowka; S. Hesse; R. Bernhardt; UNIVERSITY HOSPITAL BENJAMIN FRANKLIN BERLIN (GERMANY) DEPT OF NEUROLOGICAL REHABILITATION
|
| The restoration of gait is a key goal after stroke, traumatic brain injury and spinal cord injury. Conventional training methods, e.g. treadmill training, require great physical effort from the therapists to assist the patient After the successful development and application of a mechanised gait trainer, a new research project of constructing a sensorised robot gait trainer is under way. The aim of this project is to build a robotic device ... |
|
| Joint Symbolic Dynamics Analysis of Heart Rate and Systolic Blood Pressure Interactions in Dilated Cardiomyopathy |
25 OCT 2001 |
|
| Authors:
A. Voss; M. Baumert; UNIVERSITY OF APPLIED SCIENCES JENA (GERMANY) FACULTY OF MEDICAL ENGINEERING
|
| The dilated cardiomyopathy (DCM) induces important changes in the autonomic control. Measures of heart rate (HR) variability and systolic blood pressure (SP) variability are sensitive to those changes. The interactions between HR and SP are rather complex and strongly non-linear. We introduced the joint symbolic dynamics (JSD) as a new short-term high resolution non-linear analysis method to investigate the complex interactions between HR and SP. Continuous non-invasive 30 minutes blood ... |
|
| Addition of an Intrafascicular Electrode at the Site of Application of a Multipolar Nerve Cuff Enhances the Opportunity for Selective Fascicular Activation |
25 OCT 2001 |
|
| Authors:
R. Riso; A. Dalmose; D. Stefania; M. Schuttler; AALBORG UNIV (DENMARK) CENTER FOR SENSORY-MOTOR INTERACTION
|
| Multipolar nerve cuffs are being developed to apply to peripheral trunk nerves in an effort to limit the number of implanted components of an FES system, while at the same time allowing specific fascicles within the cuffed nerve to be independently activated. Because the electrode contact sites of a multipolar circumferential fitted cuff are positioned only at the surface of the cuffed nerve, it is difficult to activate fascicules that ... |
|
| Measurement of Intrafascicular Insertion Force of a Tungsten Needle into Peripheral Nerve |
25 OCT 2001 |
|
| Authors:
W. Jensen; K. Yoshida; T. Malina; U. Hofmann; AALBORG UNIV (DENMARK) CENTER FOR SENSORY-MOTOR INTERACTION
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| Microfabricated silicon array structures, such as those being developed by the VSAMUEL consortium may one day provide inexpensive yet highly selective chronically implanted interfaces to the peripheral nervous system. iii the present study We examined the feasibility, of implanting such microelectrodes into peripheral nerve tissue by characterizing the mechanical forces required for implantation. We conducted ill-vitro implanation experiments into excised rabbit peripheral nerve with electrosharpened tungsten needles similar in dimension ... |
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| Scalar Fuzzy Logic: A New Mathematic Model for Approximate Reasoning |
25 OCT 2001 |
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| Authors:
M. F. Mlynski; W. Ameling; CWA GMBH AACHEN (GERMANY)
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| Atrial and ventricular tachycardia are typically treated with Implantable Cardioverter Defibrillators (ICDs). Current dual-chamber ICDs have over 200 parameters, which have to be set all properly to ensure an accurate ICD programming. Since this is a time-consuming procedure, an expert-system to calculate a complete set of ICD parameters based on the given clinical patient- data was developed, where the expert knowledge was acquired and implemented into a knowledge base in ... |
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| Nonlinear EEG Analysis In Epilepsy |
25 OCT 2001 |
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| Authors:
K. Lehnertz; BONN UNIV MEDICAL CENTER (GERMANY) DEPT OF EPILEPTOLOGY
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| This overview presents potential applications of nonlinear time series analysis using EEGs derived from epilepsy patients. Apart from diagnostically oriented topics including localization of epileptic foci in different anatomical locations during the seizure-free interval I discuss possibilities for seizure anticipation which is one of the most challenging aspects of epileptology. |
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| Assessment of Baroreflex Contribution to Spontaneous Blood Pressure- Heart Rate Coupling by Cross Mutual Information |
25 OCT 2001 |
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| Authors:
M. Di Rienzo; D. Hoyer; P. Castiglioni; G. Parati; B. Pompe; CENTRO DI BIOINGEGNERIA MILAN (ITALY)
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| A novel procedure is proposed to 1) quantify, the level of physiological coupling existing between arterial blood pressure and heart rate variability during spontaneous behavior and 2) identify the relative contribution of the arterial baroreflex in the production of this coupling. The procedure is based on the estimation of the Cross-Mutual Information (CMI) between systolic blood pressure (SBP) and pulse interval (PI, the reciprocal of heart rate) beat-to- beat values. ... |
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