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Hoekstra, A. (author), Tholen, S.A. (author), Duin, R.P.W. (author)
conference paper 1996
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Boelhouwer, P.J. (author), Hoekstra, J.S.C.M. (author)
Every few years the planning agencies in the Netherlands draw up a prognosis for the future housing needs on the basis of economic and demographic scenarios. It is our contention that, in applying this approach, the agencies neglect to take sufficient account of the influence of cultural dynamics. A recent recommendatory report by the Dutch...
conference paper 2009
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Hoekstra, J.S.C.M. (author)
conference paper 2011
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Walstra, D.J.R. (author), De Vroeg, J.H. (author), Van Thiel de Vries, J.S.M. (author), Swinkels, C. (author), Luijendijk, A.P. (author), De Boer, W.P. (author), Hoekstra, R. (author), Hoonhout, B. (author), Henrotte, J. (author), Smolders, T. (author), Dekker, F. (author), Godsey, E. (author)
In order to conceive any realistic plan for post-Katrina island restoration, it is necessary to understand the physical processes that move sand along the littoral drift zone off the coast of Mississippi. This littoral zone influences the character of the Mississippi barrier islands as they exist in an ever changing cycle. To help in this...
conference paper 2012
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Hoekstra, R. (author), Walstra, D.J.R. (author), Swinkels, C.S. (author)
In October and November 2009 a pilot project has been executed at the Delfland Coast in the Netherlands, constructing three small sandy headlands called Sand Groynes. Sand Groynes are nourished from the shore in seaward direction and anticipated to redistribute in the alongshore due to the impact of waves and currents to create the sediment...
conference paper 2012
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Hoekstra, J.S.C.M. (author)
The Dutch model of social rental housing is often seen as a good practice for other European coun-tries. This is due to the fact that the Dutch social rental sector has a large size, offers dwellings of a relatively good quality and functions without receiving substantial subsidies. However, current poli-cies, both at the European and the...
conference paper 2013
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Hoekstra, J.S.C.M. (author)
The relationship between housing and the welfare state is a heavily researched topic in international comparative housing research. This exploratory paper provides a historical overview of the academic debate. For a long time, the discussion primarily focused on the degree and the nature of government intervention within the field of housing....
conference paper 2013
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Walstra, D.J.R. (author), Ruessink, G. (author), Hoekstra, R. (author), Tonnon, P.K. (author)
Input reduction is imperative to long-term (> years) morphodynamic simulations to avoid excessive computation times. Here, we discuss the input-reduction framework for wave-dominated coastal settings introduced by Walstra et al. (2013). The framework comprised 4 steps, viz. (1) the selection of the duration of the original (full) time series of...
conference paper 2013
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Hoekstra, M.J. (author)
The discipline of urbanism has its own notions; words with specific meanings, which are used by designers, policymakers and laymen to designate the concrete objects in the world around them: the parts of the city and the urban landscape, and their designs. These plans are always accompanied by written explanations of the designers, critical...
conference paper 2013
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Deng, W. (author), Hoekstra, J.S.C.M. (author), Elsinga, M.G. (author)
This paper reviews the housing policy of China from 1949-2013. It examines the housing tenure change, policy instruments, and impacts social structures in different time periods. After the welfare period of 1949-77, the dual provision period of 1978-1998, and the market dominant period of 1999-2011, China’s housing policy was again reformed...
conference paper 2014
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IJtsma, Martijn (author), Hoekstra, J.M. (author), Bhattacharyya, Raunak P. (author), Pritchett, Amy (author)
NextGen and SESAR are re-defining each agent's role in the airspace in terms of autonomy, authority and responsibility. Function allocation is the process of defining authority, i.e., which functions are executed by which agents. This is an essential design decision in creating transformative ATM concepts of operation. This paper presents a...
conference paper 2015
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Haffner, M.E.A. (author), Hoekstra, J.S.C.M. (author), Tang, C. (author), Oxley, M. (author)
In the United Kingdom, social landlords are facing decreasing governmental financial support for them to fulfil their role in the provision of social housing, which has led to increasing pressure on them to rely on private capital. Traditionally, bank loans were the main source of private capital, but after the Global Financial Crisis (GFC) and...
conference paper 2015
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Etxezarreta Etxarri, A. (author), Hoekstra, J.S.C.M. (author), Cano Fuentes, G. (author), Cruz Mazo, E. (author), Dol, C.P. (author)
The main purpose of this paper is to offer a new theoretical framework to the Spanish housing studies. This article combines different traditions and different frameworks (social innovation, social economy), in order to position the crisis of evictions in Spain and the emergence of housing co-operatives in a new theoretical context. In the first...
conference paper 2015
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Arntzen, M. (author), Aalmoes, R. (author), Bussink, F. (author), Sunil, E. (author), Hoekstra, J.M. (author)
The development of Personal aerial vehicles and unmanned aerial vehicles are expected to have a considerable influence on the development of future airspace design around large cities. In the Metropolis project, four different concepts for airspace design are assessed for a (metropolitan) city of the future. The different noise impact on the...
conference paper 2015
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Brinkman, W.P. (author), Hoekstra, A.R.D. (author), Van Egmond, R. (author)
Three studies were conducted to examine the effect of audio on people's experience in a virtual world. The first study showed that people could distinguish between mono, stereo, Dolby surround and 3D audio of a wasp. The second study found significant effects for audio techniques on people's self-reported anxiety, presence, and spatial...
conference paper 2015
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Jenie, Y.I. (author), Van Kampen, E.J. (author), De Visser, C.C. (author), Ellerbroek, J. (author), Hoekstra, J.M. (author)
Autonomous systems are required in order to enable UAVs to conduct self-separation and collision avoidance, especially for flights within the civil airspace system. A method called the Velocity Obstacle Method can provide the necessary situational awareness for UAVs in a dynamic environment, and can help to generate a deconflicting maneuver.This...
conference paper 2015
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Jenie, Y.I. (author), van Kampen, E.J. (author), Ellerbroek, J. (author), Hoekstra, J.M. (author)
A novel architecture for a general Unmanned Aerial Vehicle (UAV) Conflict Detection and Resolution (CD&R) system, in the context of their integration into the civilian airspace, is proposed in this paper. The architecture consists of layers of safety approaches ,each representing a combination of different methods for surveillance, coordination,...
conference paper 2015
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Sunil, E. (author), Hoekstra, J.M. (author), Ellerbroek, J. (author), Bussink, F. (author), Nieuwenhuisen, D. (author), Vidosavljevic, A. (author), Kern, S. (author)
Personal and unmanned aerial vehicles have received increasing media attention over the last decade. As a result of the growing excitement for these two aircraft types, many within and outside the aerospace industry envision a future in which large numbers of small aircraft fly over urban areas. With this vision for the future, the question...
conference paper 2015
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Jenie, Y.I. (author), van Kampen, E. (author), Ellerbroek, Joost (author), Hoekstra, J.M. (author)
conference paper 2016
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Sun, Junzi (author), Ellerbroek, Joost (author), Hoekstra, J.M. (author)
With the increasing availability of ADS-B transponders on commercial aircraft, as well as the rapidly growing deployment of ground stations that provide public access to their data, accessing open aircraft flight data is becoming easier for researchers. Given the large number of operational aircraft, significant amounts of flight data can be...
conference paper 2016
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