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Developing and testing a novel manufacturing method for complex geometry thin-walled GFRC panels by fabricating a 10 m high, self-supporting GFRC hyperbolic shell

Henriksen, T.N. (author), Lo, Stephen (author), Knaack, U. (author), Kirkegaard, Poul H. (author)

The main bottleneck during the manufacture of complex geometry thin-walled GFRC structures is the time taken to make the timber or CNC machined moulds for each panel. Complex geometries are comprised of many unique panel forms and the extensive time and high costs of their manufacture often prevents their architectural intent from being fully...

journal article 2022

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Agent-based analysis of airline and railway command and control systems

Lo, J.C. (author), Bouarfa, Soufiane (author)

Airline and train operations are feasible thanks to the Command and Control systems which involve interactions between human operators, technology, and procedures. In view of the expected growing demand, significant changes in these C2 systems are in development in many countries. Such changes can lead to both positive and negative emergent...

conference paper 2021

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Autonomous Flying With Neuromorphic Sensing

Parlevliet, Patricia P. (author), Kanaev, Andrey (author), Hung, Chou P. (author), Schweiger, Andreas (author), Gregory, Frederick D. (author), Benosman, Ryad (author), de Croon, G.C.H.E. (author), Gutfreund, Yoram (author), Lo, Chung Chuan (author), Moss, Cynthia F. (author)

Autonomous flight for large aircraft appears to be within our reach. However, launching autonomous systems for everyday missions still requires an immense interdisciplinary research effort supported by pointed policies and funding. We believe that concerted endeavors in the fields of neuroscience, mathematics, sensor physics, robotics, and...

journal article 2021

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Gaming Simulation and Human Factors in Complex Socio-Technical Systems: A Multi-Level Approach to Mental Models and Situation Awareness in Railway Traffic Control

Lo, J.C. (author)

The most dominant reason for the Dutch railways to innovate has been the expected increase in railway passengers and freight demand. To achieve this a large scale (re)design process of the railways as complex socio-technical system is needed. Since infrastructural expansion alone is not a sustainable option, solutions are also sought in...

doctoral thesis 2020

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The mental machine: Classifying mental workload state from unobtrusive heart rate-measures using machine learning

Hillege, Roderic H.L. (author), Lo, J.C. (author), Janssen, Christian P. (author), Romeijn, Nico (author)

This paper investigates whether mental workload can be classified in an operator setting using unobtrusive psychophysiological measures. Having reliable predictions of workload using unobtrusive sensors can be useful for adaptive instructional systems, as knowledge of a trainee’s workload can then be used to provide appropriate training level...

conference paper 2020

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Eliciting Requirements of a Knowledge Management System for Gaming in an Organization: The Role of Tacit Knowledge

Roungas, V. (author), Lo, J.C. (author), Angeletti, R. (author), Meijer, S.A. (author), Verbraeck, A. (author)

conference paper 2019

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Assessing network cognition in the Dutch railway system: insights into network situation awareness and workload using social network analysis

Lo, J.C. (author), Meijer, S.A. (author)

This study takes upon a group cognition perspective and investigates the cognition of railway traffic operations, in particular railway traffic and passenger traffic control. A table-top simulation environment is used to conduct the study, in which its design principles are elaborated upon. Network cognition is operationalized through...

journal article 2019

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Individual markers of resilience in train traffic control: The role of operators’ goals and strategic mental models and their implications for variation, expertise and performance.

Lo, J.C. (author), Pluyter, K.R. (author), Meijer, S.A. (author)

Objective:<br/>The aim of this study was to examine individual markers of resilience and obtain quantitative insights into the understanding and the implications of variation and expertise levels in train traffic operators’ goals and strategic mental models and their impact on performance.<br/>Background:<br/>The Dutch railways are one of the...

journal article 2016

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Assessing gaming simulation validity for training traffic controllers.

van Lankveld, G. (author), Sehic, E. (author), Lo, J.C. (author), Meijer, S.A. (author)

Background. The Dutch railway company ProRail is performing large-scale capacity upgrades to their infrastructure network. As part of these upgrades, ProRail uses gaming simulations to help prepare train traffic controllers for new infrastructure situations. Researching the validity of these gaming simulations is essential, since the conclusions...

journal article 2016

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Debriefing Research Games: Context, Substance and Method

van den Hoogen, J. (author), Lo, J.C. (author), Meijer, S.A. (author)

Background. Debriefing is an intrinsic part of games for learning and proper<br/>debriefing can also be beneficial to research games. However, the literature<br/>on how to debrief research games is sparse and only provides the professional<br/>with an abstract topic guide.<br/>Aim. The purpose of this study was to design a framework for the...

journal article 2016

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Advancing the architectural application of complex geometry GFRC

Henriksen, T.N. (author), Knaack, U. (author), Lo, S. (author)

Glass Fibre Reinforced Concrete (GFRC) has been developed over the last 50 years into the material it is today. GFRC is mostly used as a cladding material and to a lesser extent for structural elements. This paper examines the challenges of using freeform thin-walled GFRC elements in the design and fabrication of a self-supporting artwork. The...

conference paper 2015

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Cofactor Specificity of the Bifunctional Alcohol and Aldehyde Dehydrogenase (AdhE) in Wild-Type and Mutant Clostridium thermocellum and Thermoanaerobacteriumsaccharolyticum

Zheng, T. (author), Olson, D.G. (author), Tian, L. (author), Bomble, Y.J. (author), Himmel, M.E. (author), Lo, J. (author), Hon, S. (author), Shaw, A.J. (author), Van Dijken, J.P. (author), Lynd, L.R. (author)

Clostridium thermocellum and Thermoanaerobacterium saccharolyticum are thermophilic bacteria that have been engineered to produce ethanol from the cellulose and hemicellulose fractions of biomass, respectively. Although engineered strains of T. saccharolyticum produce ethanol with a yield of 90% of the theoretical maximum, engineered strains of...

journal article 2015

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The Debriefing of Research Games: A Structured Approach for the Validation of Gaming Simulation Outcomes

Lo, J.C. (author), Van den Hoogen, J. (author), Meijer, S.A. (author)

Debriefing is an overlooked topic in the gaming simulation literature, especially in the context of gaming for applied research and design. Building upon existing frameworks, mostly in the fields of policy and educational games, and linking the design of the debriefing with the intricacies of innovation in complex networked infrastructures, we...

conference paper 2014

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Dependence of micelle size and shape on detergent alkyl chain length and head group

Oliver, R.C. (author), Lipfert, J. (author), Fox, D.A. (author), Lo, R.H. (author), Doniach, S. (author), Columbus, L. (author)

Micelle-forming detergents provide an amphipathic environment that can mimic lipid bilayers and are important tools for solubilizing membrane proteins for functional and structural investigations in vitro. However, the formation of a soluble protein-detergent complex (PDC) currently relies on empirical screening of detergents, and a stable and...

journal article 2013

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Integrated, Ecosystem-based Marine Spatial Planning: First Results from International Simulation-Game Experiment

Mayer, I.S. (author), Zhou, Q. (author), Lo, J. (author), Abspoel, L. (author), Keijser, X. (author), Olsen, E. (author), Nixon, E. (author), Kannen, A. (author)

Marine ecosystems around the globe are increasingly affected by human activities such as fisheries, shipping, offshore petroleum developments, wind farms, recreation, tourism and more. Whereas the necessity and urgency to regulate and plan competing marine spatial claims is growing, the planning and regulation of these claims is even more...

conference paper 2012

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Joint Cooperative Shared Relaying and Multipoint Coordination for Network MIMO in 3GPP LTE-Advanced Multihop Cellular Networks

Lo, A.C.C. (author), Guan, P. (author)

book chapter 2011

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Event-based progression detection strategies using scanning laser polarimetry images of the human retina

Vermeer, K.A. (author), Lo, B. (author), Zhou, Q. (author), Vos, F.M. (author), Vossepoel, A.M. (author), Lemij, H.G. (author)

Monitoring glaucoma patients and ensuring optimal treatment requires accurate and precise detection of progression. Many glaucomatous progression detection strategies may be formulated for Scanning Laser Polarimetry (SLP) data of the local nerve fiber thickness. In this paper, several strategies, all based on repeated GDx VCC SLP measurements,...

journal article 2011

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A Cross-Layer Approach in Sensing and Resource Allocation for Multimedia Transmission over Cognitive UWB Networks

Aripin, N.M. (author), Rashid, R.A. (author), Fisal, N. (author), Lo, A.C.C. (author), Ariffin, S.H.S. (author), Yusof, S.K.S. (author)

We propose an MAC centric cross-layer approach to address the problem of multimedia transmission over cognitive Ultra Wideband (C-UWB) networks. Several fundamental design issues, which are related to application (APP), medium access control (MAC), and physical (PHY) layer, are discussed. Although substantial research has been carried out in the...

journal article 2010

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A Survey of Indoor Positioning Systems for Wireless Personal Networks

Gu, Y. (author), Lo, A. (author), Niemegeers, I. (author)

Recently, indoor positioning systems (IPSs) have been designed to provide location information of persons and devices. The position information enables location-based protocols for user applications. Personal networks (PNs) are designed to meet the users' needs and interconnect users' devices equipped with different communications technologies...

journal article 2009

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Single atom doping for quantum device development in diamond and silicon

Weis, C.D. (author), Schuh, A. (author), Batra, A. (author), Persaud, A. (author), Rangelow, I.W. (author), Bokor, J. (author), Lo, C.C. (author), Cabrini, S. (author), Sideras-Haddad, E. (author), Fuchs, G.D. (author), Hanson, R. (author), Awschalom, D.D. (author), Schenkel, T. (author)

The ability to inject dopant atoms with high spatial resolution, flexibility in dopant species, and high single ion detection fidelity opens opportunities for the study of dopant fluctuation effects and the development of devices in which function is based on the manipulation of quantum states in single atoms, such as proposed quantum computers....

journal article 2008