22,228 Works

Reliability of movement control tests in the lumbar spine

Hannu Luomajoki, Jan Kool, Eling D. De Bruin & Olavi Airaksinen
BMC Musculoskeletal Disorders, 8 (90)

Post-traumatic glenohumeral cartilage lesions: A systematic review

Heidi Ruckstuhl, Eling D. De Bruin, Edgar Stussi & Benedicte Vanwanseele
BMC Musculoskeletal Disorders, 9

The step length-frequency relationship in physically active community-dwelling older women

Agnes Zijlstra, Eling D. De Bruin, Nienke Bruins & Wiebren Zijlstra
This study evaluated the step length–frequency relationship in physically active community-dwelling older women in order to investigate whether the relationship between these two spatio-temporal gait parameters changes with increasing age. Forty older women in four age groups, i.e. 64–69, 70–74, 75–79 and 80–85 year olds, participated in the study. Subjects walked at five different self-selected speeds and while simultaneously performing an additional cognitive and/or upper-extremity motor task. Gait parameters were determined from forward accelerations measured...

Movement control tests of the low back; evaluation of the difference between patients with back pain and healthy controls

Hannu Luomajoki, Jan Kool, Eling D. De Bruin & Olavi Airaksinen
Background To determine whether there is a difference between patients with low back pain and healthy controls in a test battery score for movement control of the lumbar spine. Methods This was a case control study, carried out in five outpatient physiotherapy practices in the German-speaking part of Switzerland. Twelve physiotherapists tested the ability of 210 subjects (108 patients with non-specific low back pain and 102 control subjects without back pain) to control their movements...

The reliability of postural balance measures in single and dual tasking in elderly fallers and non-fallers

Jaap Swanenburg, Eling D. De Bruin, Kathrin Favero, Daniel Uebelhart & Theo Mulder
Background The purpose of this study was to determine the reliability of a forceplate postural balance protocol in a group of elderly fallers and non-fallers. The measurements were tested in single and dual-task conditions, with and without vision. Methods 37 elderly (mean age 73 ± 6 years) community-dwellers were included in this study. All were tested in a single (two-legged stance) and in a dual-task (two-legged stance while counting backwards aloud in steps of 7's)...

Quantification of everyday motor function in a geriatric population

Eling D. De Bruin, Bijan Najafi, Kurt Murer, Daniel Uebelhart & Kamiar Aminian
Journal of rehabilitation research & development, 44 (3)

HypE: An algorithm for fast hypervolume-based many-objective optimization

Johannes Bader & Eckart Zitzler
In the field of evolutionary multi-criterion optimization, the hypervolume indicator is the only single set quality measure that is known to be strictly monotonic with regard to Pareto dominance: whenever a Pareto set approximation entirely dominates another one, then also the indicator value of the former will be better. This property is of high interest and relevance for problems involving a large number of objective functions. However, the high computational effort required for hypervolume calculation...

Georeferenzierung der Eisenbahnlärmemissionen

Urs Waldner
Das Bundesamt für Verkehr hat den Emissionsplan 2015 für die Eisenbahnlärmemissionen der Schweizerischen Bundesbahnen (SBB) in tabellarischer Form im Internet publiziert. Eine An-frage beim Bahnumweltcenter der Schweizerischen Bundesbahnen ergab leider, dass das gleis-genaue SBB-Eisenbahnnetz mit der Kilometrierung, welche im Emissionsplan verwendet wur-de, Konzerneigentum ist und nur an die kantonalen Lärmfachstellen herausgegeben werden darf. Der vorliegende Arbeitsbericht beschreibt, wie die relevanten Informationen aus dem Text des PDF-Dokumentes in eine relationale Datenbank mit Angaben zu Linien, Linienabschnitten...

Matching of Ikonos stereo and multitemporal GEO Images for DSM Generation

Li Zhang, Maria N. Pateraki & Emmanuel Baltsavias
Investigations on the use of stereo GEO and multitemporal GEO Ikonos images for DSM generation are reported. Both an own d e - veloped matching algorithm and the digital photogrammetric systems LH Systems DPW770 and VirtuoZo were used. In our own matching method, we start with quasi-epipolar image generation, and derivation of approximations using grid point matching based on relaxation. The final matching is a modified multi-image geometrically constrained method. Test results on both methods...

Erreichbarkeitsveränderungen in der Schweiz: Eine kartographische Darstellung

Alessandro Carosio, Claudia Dolci & Milena Scherer
Arbeitsberichte Verkehrs- und Raumplanung, 319

Dimensionieren I: WS 2005-06

Markus Meier
Schrauben und die dazugehörigen Muttern bilden die am häufigsten verwendeten Maschinenelemente. Ihre hauptsächliche Anwendung finden sie in lösbaren Elementen. Es existieren bedingt durch die verschiedensten Anwendungsfälle eine Vielzahl von verschiedenen Schraubenarten, Mutterntypen wie auch Gewindearten. Der Nachteil von Schraubenverbindungen liegt darin, dass sie sich durch Erschütterungen lösen oder durch plastische Setzvorgänge der Wirkflächen entspannen können. Abhilfe schaffen dabei verschiedenste kraft- wie auch formschlüssige Sicherungsmassnahmen, die eine Vorspannung der Schraube in allen Betriebszuständen aufrechterhalten und somit...

"Die Mathematik ist eine gar herrliche Wissenschaft"

Urs Stammbach
Abschiedsvorlesung von Professorinnen und Professoren, Wintersemester 2004/2005

The application of robust regression to a production function comparison: The example of Swiss corn

Robert Finger & Werner Hediger
The adequate representation of crop response functions is crucial for agri-environmental modeling and analysis. So far, the evaluation of such functions focused on the comparison of different functional forms. The perspective is expanded in this article by considering an alternative regression method. This is motivated by the fact that exceptional crop yield observations (outliers) can cause misleading results if least squares regression is applied. We show that such outliers are adequately treated if robust regression...

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