Maarten de Boer

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Extended exposure to microgravity leads to significant musculoskeletal adaptations. Contractile parameters of four skeletal muscles (biceps brachii–BB, vastus medialis–VM, biceps femoris–BF and gastrocnemius medialis–GM) were measured in ten healthy males (aged 22.3 ± 2.2 years) during 35 days of horizontal bed rest by a mechanomyography-based method termed(More)
The aim of the present study was to investigate the changes in thickness, fascicle length (L f) and pennation angle (θ) of the antigravity gastrocnemius medialis (GM) and vastus lateralis (VL) muscles, and the non-antigravity tibialis anterior (TA) and biceps brachii (BB) muscles measured by ultrasonography in ten healthy males (aged 22.3 ± 2.2 years) in(More)
By integrating interferometric deflection data from electrostatically actuated microcantilevers with a numerical finite difference model, we have developed a step-by-step procedure to determine values of Young’s modulus while simultaneously quantifying nonidealities. The central concept in the methodology is that nonidealities affect the long-range(More)
In this paper we present a real-time system for morphing two voices in the context of a karaoke application. As the user sings a pre-established song, his pitch, timbre, vibrato and articulation can be modified to resemble those of a pre-recorded and pre-analyzed recording of the same melody sang by another person. The underlying analysis/synthesis(More)
CLAM (C++ Library for Audio and Music) is a framework for audio and music programming. It may be used for developing any type of audio or music application as well as for doing more complex research related with the field. In this paper we introduce the practicalities of CLAM's first release as well as some of the sample application that have been developed(More)
We have designed, fabricated, tested and modeled a first generation small area test structure for MEMS fracture studies by electrostatic rather than mechanical probing. Because of its small area, this device has potential applications as a lot monitor of strength or fatigue of the MEMS structural material. By matching deflection versus applied voltage data(More)
Recently, we have seen an increased use and support of the Sound Description Interchange Format (SDIF), among which the integration of SDIF in widely used environments such as MAX/MSP (Wright, Dudas, Khoury, Wang, Zicarelli, 1999) and MPEG-4 (Wright, Scheirer, 1999). To follow and encourage this trend, we have added support for importing and exporting SDIF(More)