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Doirado, E. (author), Van den Berg, M. (author), Van Lint, J.W.C. (author), Hoogendoorn, S.P. (author), Prendinger, H. (author)Disaster evacuation studies are important but difficult or impossible to conduct in the real world. Evacuation simulation in a virtual world can be an important tool to obtain data on the escape and choice behavior of people. However, to obtain accurate “realistic” data, the engagement of participants is a key challenge. Therefore, we describe...conference paper 2012
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Nadj-perge, S. (author), Pribiag, V.S. (author), Van den Berg, J.W.G. (author), Zuo, K. (author), Plissard, S.R. (author), Bakkers, E.P.A.M. (author), Frolov, S.M. (author), Kouwenhoven, L.P. (author)A double quantum dot in the few-electron regime is achieved using local gating in an InSb nanowire. The spectrum of two-electron eigenstates is investigated using electric dipole spin resonance. Singlet-triplet level repulsion caused by spin-orbit interaction is observed. The size and the anisotropy of singlet-triplet repulsion are used to...journal article 2012
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Veiga, T. (author), Nijland, J.G. (author), Driessen, A.J.M. (author), Bovenberg, R.A.L. (author), Touw, H. (author), Van den Berg, M.A. (author), Pronk, J.T. (author), Daran, J.M. (author)The multicomponent global regulator Velvet complex has been identified as a key regulator of secondary metabolite production in Aspergillus and Penicillium species. Previous work indicated a massive impact of PcvelA and PclaeA deletions on penicillin production in prolonged batch cultures of P. chrysogenum, as well as substantial changes in...journal article 2012
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Veiga, T. (author), Gombert, A.K. (author), Landes, N. (author), Verhoeven, M.D. (author), Kiel, J.A.K.W. (author), Krikken, A. (author), Nijland, J.G. (author), Touw, H. (author), Luttik, M.A.H. (author), Van der Toorn, J.C. (author), Driessen, A.J.M. (author), Bovenberg, R.A.L. (author), Van den Berg, M.A. (author), Van der Klei, I.J. (author), Pronk, J.T. (author), Daran, J.M. (author)Industrial production of semi-synthetic cephalosporins by Penicillium chrysogenum requires supplementation of the growth media with the side-chain precursor adipic acid. In glucose-limited chemostat cultures of P. chrysogenum, up to 88% of the consumed adipic acid was not recovered in cephalosporin-related products, but used as an additional...journal article 2012
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Verbeek, P.W. (author), Van den Berg, P.M. (author)We investigate the possibility of light beams that are both narrow and long range with respect to the wavelength. On the basis of spectral electromagnetic field representations, we have studied the decay of the evanescent waves, and we have obtained some bounds for the width and range of a light beam in the near-field region. The range...journal article 2011
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Bongers, WA. (author), Van Beveren, V. (author), Thoen, D.J. (author), Nuij, P.J.W.M. (author), De Baar, M.R. (author), Donné, A.J.H. (author), Westerhof, E. (author), Goede, A.P.H. (author), Krijger, B. (author), Van den Berg, M.A. (author), Kantor, M. (author), Graswinckel, M.F. (author), Hennen, B.A. (author), Schüller, F.C. (author)An intermediate frequency (IF) band digitizing radiometer system in the 100–200 GHz frequency range has been developed for Tokamak diagnostics and control, and other fields of research which require a high flexibility in frequency resolution combined with a large bandwidth and the retrieval of the full wave information of the mm-wave signals...journal article 2011
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Heersmink, R. (author), Van den Hoven, J. (author), Van Eck, N.J. (author), Van den Berg, J. (author)This paper presents the first bibliometric mapping analysis of the field of computer and information ethics (C&IE). It provides a map of the relations between 400 key terms in the field. This term map can be used to get an overview of concepts and topics in the field and to identify relations between information and communication technology...journal article 2011
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Cui, M. (author), Zeitouny, M.G. (author), Bhattacharya, N. (author), Van den Berg, S.A. (author), Urbach, H.P. (author)We experimentally demonstrate long distance measurements with a femtosecond frequency comb laser using dispersive interferometry. The distance is derived from the unwrapped spectral phase of the dispersed interferometer output and the repetition frequency of the laser. For an interferometer length of 50 m this approach has been compared to an...journal article 2011
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Zeitouny, M.G. (author), Cui, M. (author), Janssen, A.J. (author), Bhattacharya, N. (author), Van den Berg, S.A. (author), Urbach, H.P. (author)We investigate general properties of the interferograms from a frequency comb laser in a non-linear dispersive medium. The focus is on interferograms at large delay distances and in particular on their broadening, the fringe formation and shape. It is observed that at large delay distances the interferograms spread linearly and that its shape is...journal article 2011
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Augustijn, D.C.M. (author), Van den Berg, M. (author), De Bruine, E. (author), Korving, H. (author)The Volkerak-Zoom Lake is an enclosed part of the estuarine delta in the southwest of the Netherlands and exists as such since 1987. The current freshwater lake experienced a deterioration in water and ecological quality. Especially cyanobacteria are a serious problem. To solve this problem it is proposed to reintroduce salt water and tidal...journal article 2011
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Van den Berg, C. (author)Life sciences will be one of the decisive factors in the 21st century. A major part of this field is the so-called white biotechnology, also known as industrial biotechnology. White biotechnology is an emerging field where bio-chemicals are produced using micro-organisms. However, the production of bio-chemicals is severely inhibited due to...doctoral thesis 2010
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Zeitouny, M.G. (author), Cui, M. (author), Bhattacharya, N. (author), Urbach, H.P. (author), Van den Berg, S.A. (author), Janssen, A.J.E.M. (author)We have investigated correlation patterns generated by a frequency-comb laser in a dispersive unbalanced Michelson interferometer and apply the developed formalism to the case of distance metrology. Due to group velocity dispersion, the position of the brightest fringe of the correlation pattern, which is used for distance determination, cannot...journal article 2010
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Bsma, R. (author), Kaymak, U. (author), Van den Berg, J. (author), Udo, H. (author)To reveal farmers’ motives for on-farm diversification and integration of farming components in the Mekong Delta, Vietnam, we developed a fuzzy logic model (FLM) using a 10-step approach. Farmers’ decision-making was mimicked in a three-layer hierarchical architecture of fuzzy inference systems, using data of 72 farms. The model includes three...journal article 2010
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Van den Berg, A. (author), Ren, P. (author), Marinissen, E.J. (author), Gaydadjiev, G. (author), Goossens, K. (author)Test data travels through a System on Chip (SOC) from the chip pins to the Core-Under-Test (CUT) and vice versa via a Test Access Mechanism (TAM). Conventionally, a TAM is implemented using dedicated communication infrastructure. However, also existing functional interconnect, such as a bus or Network on Chip (NOC), can be reused as TAM; this...journal article 2010
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Van den Berg, M. (author)Motivation The growth of our road infrastructure cannot keep up with the growing mobility of people, and the corresponding increase in traffic demand. This results in daily congestion on the freeways. It is an illusion that the problem of congestion can be solved completely within a few years, but it is possible to improve the current situation....doctoral thesis 2010
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Abubakar, A. (author), Hu, W. (author), Habashy, T.M. (author), Van den Berg, P.M. (author)We have applied the finite-difference contrast-source inversion (FDCSI) method to seismic full-waveform inversion problems. The FDCSI method is an iterative nonlinear inversion algorithm. However, unlike the nonlinear conjugate gradient method and the Gauss-Newton method, FDCSI does not solve any full forward problem explicitly in each iterative...journal article 2009
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Cui, M. (author), Zeitouny, M.G. (author), Bhattacharya, N. (author), Van den Berg, S.A. (author), Urbach, H.P. (author), Braat, J.J.M. (author)We experimentally demonstrate that a femtosecond frequency comb laser can be applied as a tool for longdistance measurement in air. Our method is based on the measurement of cross correlation between individual pulses in a Michelson interferometer. From the position of the correlation functions, distances of up to 50 m have been measured. We...journal article 2009
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Harris, D.M. (author), Van der Krogt, Z.A. (author), Klaassen, P. (author), Raamsdonk, L.M. (author), Hage, S. (author), Van den Berg, M.A. (author), Bovenberg, R.A.L. (author), Pronk, J.T. (author), Daran, J.M. (author)OA Fund TU Delft Background Since the discovery of the antibacterial activity of penicillin by Fleming 80 years ago, improvements of penicillin titer were essentially achieved by classical strain improvement through mutagenesis and screening. The recent sequencing of Penicillium chrysogenum strain Wisconsin1255-54 and the availability of...journal article 2009
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Van den Berg, G. (author), De Rijk, S. (author), Mesman, G. (author), Abrahamse, A. (author), De Graaf, R. (author)Dit rapport beschrijft de resultaten aan van een case study die is uitgevoerd rond de geplande nieuwbouwwijk De Draai in Heerhugowaard. Wij hebben de mogelijkheden in beeld gebracht om het lokale oppervlaktewatersysteem aan te wenden als bron voor drinkwater. Een belangrijke vraag is in hoeverre een sluitende waterbalans mogelijk is zonder...report 2008
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Zeitouny, M. (author), Bhattacharya, N. (author), Urbach, H.P. (author), Van den Berg, S.A. (author)Frequency and distance metrology have been revolutionized with the arrival of stabilized frequency comb lasers. We discuss several aspects of distance metrology specially the contribution of the dispersion in by air.conference paper 2008