Searched for: +
(1 - 20 of 29)

Pages

document
Bons, W.J.W. (author), Hol, T. (author)
The quality of a loudspeaker system is largely determined by the distortion of the output signal, resulting from the non-ideal transfer of the loudspeaker and amplifier. This report proposes a method of reducing the distortion in the output signal by using a topology with active feedback. The feedback control unit, which is implemented by a...
bachelor thesis 2016
document
Girrbach, Fabian (author), Hol, Jeroen D. (author), Bellusci, Giovanni (author), Diehl, Moritz (author)
conference paper 2017
document
Hol, F.J.H. (author)
In this thesis, I describe experiments aimed at understanding bacterial population dynamics in ecosystems that are spatially structured at the micro-scale. We combine microfabrication and microfluidics to create synthetic ecosystems that have a complex yet well-defined geometry and chemical composition. Bacteria that inhabit such ecosystems can...
doctoral thesis 2014
document
Hol, C.W.J. (author)
In many application areas of mechanical servo-systems the high demands on the performance often imply a tightly tuned feedback controller, that takes dynamical interaction into account. Model-based H-optimal controller synthesis is a well-suited technique for this purpose. However, the state-of-the-art synthesis approach yields controllers with...
doctoral thesis 2006
document
Hol, F.J.H. (author), Voges, M.J. (author), Dekker, C. (author), Keymer, J.E. (author)
Background: Antagonistic interactions mediated by antibiotics are strong drivers of bacterial community dynamics which shape biodiversity. Colicin production by Escherichia coli is such an interaction that governs intraspecific competition and is involved in promoting biodiversity. It is unknown how environmental cues affect regulation of the...
journal article 2014
document
Van Vliet, S. (author), Hol, F.J.H. (author), Weenink, T. (author), Galajda, P. (author), Keymer, J.E. (author)
Background Bacterial habitats, such as soil and the gut, are structured at the micrometer scale. Important aspects of microbial life in such spatial ecosystems are migration and colonization. Here we explore the colonization of a structured ecosystem by two neutrally labeled strains of Escherichia coli. Using time-lapse microscopy we studied the...
journal article 2014
document
Männik, J. (author), Wu, F. (author), Hol, F.J.H. (author), Bisicchia, P. (author), Sherratt, D.J. (author), Keymer, J.E. (author), Dekker, C. (author)
Cell division in typical rod-shaped bacteria such as Escherichia coli shows a remarkable plasticity in being able to adapt to a variety of irregular cell shapes. Here, we investigate the roles of the Min system and the nucleoid-occlusion factor SlmA in supporting this adaptation. We study “squeezed” E. coli in narrow nanofabricated channels...
journal article 2012
document
Hol, F.J.H. (author), Hubert, A.W.R. (author), Dekker, C. (author), Keymer Vergara, J.E. (author)
During antibiotic treatment, antibiotic concentration gradients develop. Little is know regarding the effects of antibiotic gradients on populations of nonresistant bacteria. Using a microfluidic device, we show that high-density motile Escherichia coli populations composed of nonresistant bacteria can, unexpectedly, colonize environments...
journal article 2016
document
Hol, F.J.H. (author), Galajda, P. (author), Woolthuis, R.G. (author), Dekker, C. (author), Keymer, J.E. (author)
Background The spatial structure of a habitat can have a strong impact on community dynamics. Different experimental approaches exist to explore the effect of spatial structure on bacterial communities. To investigate the effect of ‘space’, a single implementation of spatial structure is often contrasted to bacterial community dynamics in well...
journal article 2015
document
Hol, F.J.H. (author), Galajda, P. (author), Nagy, K. (author), Woolthuis, R.G. (author), Dekker, C. (author), Keymer, J.E. (author)
Cooperative organisms are ubiquitous in nature, despite their vulnerability to exploitation by cheaters. Although numerous theoretical studies suggest that spatial structure is critical for cooperation to persist, the spatial ecology of microbial cooperation remains largely unexplored experimentally. By tracking the community dynamics of...
journal article 2013
document
Hol, B. (author), Daamen, T.A. (author)
De financieringsmogelijkheden van stedelijke gebiedsontwikkeling zijn de laatste jaren sterk gekrompen. De aanpak van gebiedsgerichte projecten zijn hierdoor kleinschaliger en meer lokaal geworden. Initiatieven moeten in toenemende mate ‘van onderop’ komen, en beginnen vaak met de (her)ontwikkeling van één of enkele vastgoedobjecten. De...
journal article 2014
document
Hol, F.J.H. (author), Rotem, Or (author), Jurkevitch, Edouard (author), Dekker, C. (author), Koster, D. (author)
Soil is a microenvironment with a fragmented (patchy) spatial structure in which many bacterial species interact. Here, we explore the interaction between the predatory bacterium Bdellovibrio bacteriovorus and its prey Escherichia coli in microfabricated landscapes. We ask how fragmentation influences the prey dynamics at the microscale and...
journal article 2016
document
Hol, F.J.H. (author), Whitesides, George M. (author), Dekker, C. (author)
Habitat spatial structure has a profound influence on bacterial life, yet there currently are no low-cost equipment-free laboratory techniques to reproduce the intricate structure of natural bacterial habitats. Here, we demonstrate the use of paper scaffolds to create landscapes spatially structured at the scales relevant to bacterial ecology...
journal article 2019
document
Hol, D.D. (author)
master thesis 2010
document
Hol, D.D. (author)
master thesis 2010
document
Hol, D.D. (author)
master thesis 2010
document
Hol, Tijs (author)
Resistive RAM, or RRAM, is one of the emerging non-volatile memory (NVM) technologies, which could be used in the near future to fill the gap in the memory hierarchy between dynamic RAM (DRAM) and Flash, or even completely replace Flash. RRAM operates faster than Flash, but is still non-volatile, which enables it to be used in a dense 3D NVM...
master thesis 2020
document
Pagitz, M.E. (author), Hol, J.M.A.M. (author)
patent 2012
document
Arbocz, J. (author), Hol, J.M.A.M. (author)
report 1990
document
Hol, D.D. (author)
report 2009
Searched for: +
(1 - 20 of 29)

Pages