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Netherlands - Delft University of Technology PhD Research Assistantship in Potential of DSP for Digital Terrain Elevation Data

Ph.D. Research Assistantship to Explore the Potential of DSP for Digital Terrain Elevation Data at the Netherlands Defense Academy and Delft University of Technology

With today’s digital signal processing capabilities, it becomes possible to optimize the performance parameters of a navigation system for a particular set of intended applications. The Netherlands Defense Academy and the Delft University of Technology are providing an opportunity of a Ph.D. research assistantship to explore opportunities in the field of Terrain Reference Navigation (TRN) by using digital signal processing techniques that were originally developed for the acquisition and tracking of GPS signals. The goal of the research is to contribute to the creation of a design framework which can be used to match technology and processing concepts to a particular set of navigation system performance requirements. The focus lies on exploring the potential of various digital signal processing concepts for matching a set of distance measurements with a stored database of the environment.

The candidate should hold a Master’s degree in electrical engineering, computer science, applied mathematics or any other relevant study with substantial knowledge on data processing. Research will be conducted both at the Netherlands Defense Academy and at Delft University of Technology. Leaders of the project are established researchers in the field of applied mathematics, geomatics and electronics. Contact Prof. P.J. Oonincx, Netherlands Defense Academy, at [pj.oonincx AT nlda.nl]. More information about the Netherlands Defense Academy can be found here.

October 8th, 2008

Netherlands - Delft University of Technology PhD Studentship in Heart 3D Project

PhD Student (m/f) ‘Heart in 3D’ Project
Delft, (Zuid-Holland), 38 hours per week Delft University of Technology

Job description
Cardiovascular diseases are increasingly diagnosed using multimodal imaging (combinations of MRI, CT and SPECT). One goal of the “Heart in 3D” project is to develop algorithms and software to connect three types of diagnostic information on heart function (the status of the coronary arteries, myocardial perfusion and ventricular function) from multimodality imaging studies. Novel algorithms and quantitative analysis tools will be developed to support diagnosis and disease staging in cardiovascular disease.

We are looking for a creative PhD student with a background in image processing or data fusion, to work on highly desired methods in radiological and cardiologic practice. The PhD student will investigate new methods for information fusion from multimodal imaging data. This will involve artificially intelligent approaches to image registration, interpretation and data fusion for diagnosing heart disease. The PhD student’s research priority will be: Modelling the diseased vessel wall of the coronary arteries.

Results will be presented in scientific papers and at international conferences, and the developed technologies will be tested together with clinical and industrial partners. You will work in a multidisciplinary team with clinical and technical researchers at Delft University of Technology and Erasmus Medical Centre, and collaborate with Leiden University Medical Centre.

Continue Reading September 1st, 2008

Netherlands - Delft University of Technology PhD Students in THz Near-Field Microscopy

The Optics Research Group has two PhD positions available in the field of THz near-field microscopy.

Project and job description
Under normal circumstances, light cannot be focused down to spot sizes with diameters smaller than approximately half a wavelength. For radiation with a frequency of 1 THz, which corresponds to a wavelength of 300 micrometres, this implies that it is impossible to study objects smaller than about 150 micrometre. This so-called diffraction limit poses a problem for the development of a THz microscope.

The research proposed here is about methods to overcome the diffraction limit with the aim to develop a THz microscope with a spatial resolution of about 100 nm in the 1-50 THz frequency range. This frequency range is attractive as many organic molecules have resonances in this frequency range and such a microscope will have numerous biological applications.

Normally, the diffraction limit implies that when you illuminate an object with dimensions much smaller than the wavelength with THz light, the object has a negligible effect on the field very far away from the object, in the so-called far-field. It is only in the direct neighbourhood of the object that the THz field is significantly distorted.

Continue Reading September 27th, 2007

Netherlands - Delft University of Technology PhD Position in Switchable Materials

The section Radiation Detection & Matter has a PhD student vacancy in the field of switchable materials.

Project and job description
Materials that switch from a semiconductor (transparent) to a metal (reflective) by a single pulse of laser light can be used as building blocks for fast optical switches. Such all-optical switches, in which light pulses are controlled by other light pulses, are needed to avoid slow electrical switching in optical data communication networks and may be applied in future optical computers. Several binary lanthanide materials display a heat or pressure induced reversible semiconductor-to-metal (SM) phase transition with spectacular reflectivity changes at the regular telecommunication wavelength. So far, the dynamical aspects of this switching process have not yet been addressed.

The PhD candidate will study this unique reversible SM phase transition in a new class of switchable lanthanide materials. She or he will use optical techniques to characterize the materials and trigger the phase transition by applying pressure, changing temperature or varying material composition. In addition, the PhD candidate will study the dynamics of the phase transition by triggering it with ultrashort pulses of laser light. The goal is to gain a fundamental understanding of this photo-induced phase transition and to study its potential for fast photo switches.

Continue Reading September 27th, 2007

Netherlands - Delft University of Technology PhD Position with P2P Fusion Project

The Software Technology Department has vacancy for a PhD position with the P2P-Fusion project.

Project and job description
In the European Project P2P-Fusion, Delft University of Technology is responsible for the design and implementation of the peer-to-peer Mediaspace, a peer-to-peer layer capable of zero-cost publication and distribution of multimedia content in a scalable fashion in virtual communities. The Fusion platform will offer seamless integration of text, pictures, audio and video. The content should also be editable by members of the virtual communities.

The PhD student’s research will focus on the design and implementation of the Mediaspace, which on the one hand has to become part of the Tribler P2P client developed by TU Delft, while on the other hand it has to be integrated with the semantic layer and applications in virtual communities developed by other partners in the P2P-Fusion project. Potential research directions include content rating and recommendation, distributed social networking, tag-based navigation and content moderation mechanisms.

Continue Reading September 27th, 2007

Netherlands - Delft University of Technology PhD Position for HV GIS Real-Time Decision Support System

High-Voltage Technology and Management (HTM) is a research unit within the Faculty of Electrical Engineering, Mathematics and Computer Science of Delft University of Technology. HTM’s mission is to acquire further knowledge of existing and emerging high-voltage technologies, enabling improved and sustainable solutions in the energy and non-energy sector. Underlying research starts with physics of the materials, whose properties form the basis of equipment performance, management and diagnostics. This is investigated on a large scale in the HV laboratory for its practical feasibility. R&D items are focused on electrical ageing, electrical design, diagnostics, database techniques and expert systems applications.

The Electrical Power Engineering High-Voltage Technology and Management (HTM) research unit has a PhD position vacancy for a real time decision support system for HV GIS.

Project and job description
Gas-insulated systems form important nodes in the high-voltage transmission grid. They operate both as distribution hubs and as protection in case of grid failures. In the Netherlands, three are located at the 420 kV voltage level and many more at lower voltage levels. These gas-insulated systems consist of a metallic or aluminium enclosure in which the high-voltage conductor is centred by means of supporting insulators. In modern installations, SF6 is used as an insulating medium. Because SF6 is a greenhouse gas, other gases hold future promise, and further research investigations into N2, CO2 or SF6-N2 mixtures are thus currently of great interest.

Although this type of equipment is said to be almost maintenance-free, some maintenance is still required over the long term. In the past decade, TU Delft has conducted research into one of the on-line diagnostic techniques for condition assessment, which is based on partial discharge phenomena. The Dutch TSO TenneT is now interested in the development of a real-time decision support system based on on-line insulation condition assessment techniques (e.g. partial discharge detection). Using this support system, the asset manager is able to recognise upcoming failure modes due to operation and ageing of the system, allowing him to respond timeously and accurately. This of course increases the availability and reliability of the electricity grid.

Continue Reading September 27th, 2007

Netherlands - Delft University of Technology Postdoc Position in ‘Time Integration Methods for Unsteady Flows and Fluid-structure Interactions’

The Aerodynamics Group of the Faculty of Aerospace Engineering has a post-doc vacancy on Time Integration Methods for Unsteady Flows and Fluid-structure Interactions, starting December 2007.

Job description
The topic of this two-year post-doc position is sophisticated time integration methods for unsteady turbulent flows and fluid-structure interactions. The main application lies in aerodynamics and aero elasticity for wind turbines. The position is part of a larger project, ‘Uncertainties in unsteady flows and fluid-structure interaction simulations – applied to wind turbines at sea’, funded by STW (Dutch Technology Foundation). One of this project’s goals is to obtain a reduction in computational time for unsteady turbulent flow and fluid-structure interaction simulations using sophisticated time integration techniques, for which we now seek a post-doc candidate. Tasks include the analysis of different numerical schemes on academic problems, as well as implementation of the method into a general-purpose CFD code and application to flow around wind turbine blades.

Requirements
Applicants should have a PhD in Computational Fluid Dynamics. The successful candidate enjoys working in a team and has intellectual curiosity and knowledge of relevant topics.
Programming experience is an advantage, especially in C++. This position’s main responsibility is research, but the appointee will also be given the opportunity to acquire some teaching experience. Delft University of Technology is a bilingual organisation; a good command of English (written and oral) is essential, while good Dutch is also preferred.

Continue Reading September 27th, 2007

Netherlands - 2008 Netherlands Fellowship Programmes (NFP) (administered by Nuffic)

The Netherlands Fellowship Programmes (NFP) are demand-driven fellowship programmes designed to foster capacity building within organizations in 57 countries in development by providing training and education to their mid-career staff members. The NFP are funded by the Netherlands Ministry of Foreign Affairs from the budget for development cooperation.

The need for education and training must occur within the organization of the applicant. This means that applicants must be nominated by their employers. In fact, applications without the support of an employer will not be considered.

Nuffic (the Netherlands Organization for International Cooperation in Higher Education) administers the NFP on behalf of the Minister for Development Cooperation. The Minister determines the policy that governs the framework of the NFP programme. Nuffic manages and monitors the programmes as a whole. The Dutch organizations selected to provide the required education and training are responsible for awarding and administering the fellowships.

Continue Reading September 23rd, 2007

Netherlands - Delft University of Technology PhD Position in e-Survey of Peat Deposits

The Dutch subsurface is notorious for its poor ground conditions and high water table. Its organic layers behave heterogeneously both in space and time, thus posing a huge challenge to ground engineers whose task it is to construct soil structures free of differential settlement or to guarantee the long-term stability of secondary dikes.

We propose to measure the electric conductivity and chargeability of peaty soils in a prototype impedance oedometer at low frequencies and to relate their electric properties to their index properties (organic content, degree of humification, for example) and their geomechanical properties (permeability, strength and deformability) at different stages of consolidation and under various degrees of humidity.

Our research will lead to the modelling of the electrokinetics taking place in organic soils due to the application and interruption of an electric current. It will open up the possibility to conduct multi-frequency electric and electromagnetic surveys to characterize the 3D distribution of peat deposits and their variability in terms of geomechanical parameters.

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August 20th, 2007

Netherlands - Delft University of Technology PhD Position in Raman Spectroscopy

Delft University of Technology is a multifaceted institution offering education and conducting research within the technical sciences at an internationally recognised level. Education, research and designs are strongly oriented towards social applicability. TU Delft develops technologies for future generations, focusing on sustainability, safety and economic vitality. At TU Delft, you will work in an environment in which technical sciences and society converge. TU Delft comprises eight faculties, the Assistant Staff Office, unique laboratories, research institutes and schools.

Faculty of Applied Sciences
This is a large, research-oriented faculty providing excellent, challenging education and conducting pioneering, cutting-edge fundamental research of great societal relevance in the natural sciences.
It provides a world-class training ground for future leaders in scientific professional practice and research. With more than 60 different nationalities studying and working together, its environment is enriched and culturally diverse. The Kavli Institute of Nanoscience is one of the seven departments of the Faculty.

Section Photronic Devices of the Kavli Institute of Nanoscience
The section Photronic Devices concentrates on the physics of devices operating on the basis of control of photonic and electronic waves at the nanoscale. In particular, use is made of photonic bandgap materials (photonic crystals) and inorganic semiconductors for new optical and electrical device operation. Phenomena in devices made from these systems exhibit both interesting similarities and differences, while in either case doping is essential for device functionality. For more information about the Photronic Devices section or the Kavli Institute of Nanoscience please visit www.ns.tudelft.nl/pd.

The Section Photronic Devices has a PhD vacancy in Raman Spectroscopy.

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July 18th, 2007