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Giant magnetocaloric effect for (Mn, Fe, V)2(P, Si) alloys with low hysteresis

Lai, J. (author), Huang, B. (author), You, X. (author), Maschek, M. (author), Zhou, Guofu (author), van Dijk, N.H. (author), Brück, E.H. (author)

The Fe₂P type Mn–Fe–P–Si alloys exhibit a giant magneto-elastic first-order transition, but the large hysteresis limits their performance. Crystal structure evolution and magnetocaloric performance were investigated by varying the Mn and Fe contents at a constant V substitution of 0.02 in Fe₂P-type (Mn_1.17-xFe...

journal article 2024

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A Comprehensive Workflow for High Resolution 3D Solar Photovoltaic Potential Mapping in Dense Urban Environment: A Case Study on Campus of Delft University of Technology

Zhou, Y. (author), Verkou, M.H. (author), Zeman, M. (author), Ziar, H. (author), Isabella, O. (author)

Photovoltaic (PV) technology is the most promising renewable energy source to be integrated on urban building surfaces. Modeling and simulating urban PV systems pose more challenges than the conventional ones installed in open field due to rich urban morphology. Herein, a comprehensive workflow to estimate urban solar PV potential is...

journal article 2021

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Blind beamforming techniques for global tracking systems

Zhou, M. (author)

After the development in the past 120 years since the invention of the first radio transmission, worldwide wireless communication systems are nowadays part of daily life. Behind the shining and astonishing achievement of modern communication systems, the exhaustion of existing frequency spectrum resources has been a concern. In higher frequency...

doctoral thesis 2015

document

An investigation of link quality assessment for mobile multi-hop and multi-rate wireless networks

Zhou, J. (author), Jacobsson, M. (author), Onur, E. (author), Niemegeers, I. (author)

Wireless ad hoc networks will be an important component in future communication systems. The performance of wireless ad hoc networks can be improved by link quality-aware applications. Wireless link quality is dynamic in nature, especially in mobile scenarios. Therefore, accurate and fast packet delivery ratio estimation is a prerequisite to...

journal article 2011

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Impact of wireless link quality across communication layers

Zhou, J. (author)

Nowadays, wireless networks are used in most of the applications with radio technologies being used in all kinds of wireless networks. In all wireless links, the transmitted packets can be lost. How to identify the quality of a certain wireless link and achieve the best delivery performance over a certain wireless network is an open issue. In...

doctoral thesis 2010

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Link Quality-Based Transmission Power Adaptation for Reduction of Energy Consumption and Interference

Zhou, J. (author), Jacobsson, M. (author), Niemegeers, I. (author)

Today, many wireless devices are mobile and battery powered. Based on the fact that battery capacity is still limited, energy saving is an important issue in wireless communication.Meanwhile, the number of wireless devices continues to increase and this creates interference problems between wireless devices. In this paper, we look at...

journal article 2010

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Wind power integration: From individual wind turbine to wind park as a power plant

Zhou, Y. (author)

As power capacities of single wind turbine, single wind park and total wind power installation are continuously increasing, the wind power begins to challenge the safety operation of the power system. This thesis focuses on the grid integration aspects such as the dynamic behaviours of wind power during disturbances, and dynamic behaviours of...

doctoral thesis 2009

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Operation of grid-connected DFIG under unbalanced grid voltage condition

Zhou, Y. (author), Bauer, P. (author), Ferreira, J.A. (author), Pierik, J. (author)

Doubly fed induction generator (DFIG) still shares a large part in today's wind power market. It provides the benefits of variable speed operation cost-effectively, and can control its active and reactive power independently. Crowbar protection is often adopted to protect the rotor-side voltage source converter (VSC) from transient overcurrent...

journal article 2009

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Reformulating Component Identification as Document Analysis Problem

Gross, H.G. (author), Lormans, M. (author), Zhou, J. (author)

One of the first steps of component procurement is the identification of required component features in large repositories of existing components. On the highest level of abstraction, component requirements as well as component descriptions are usually written in natural language. Therefore, we can reformulate component identification as a text...

report 2007

document

Network-aware SuperPeers-Peers Geometric Overlay Network

Lua, E.K. (author), Zhou, X. (author)

Peer-to-Peer (P2P) overlay networks can be utilized to deploy massive Internet overlay services such as multicast, content distribution, file sharing, etc. efficiently without any underlying network support. The crucial step to meet this objective is to design network-aware overlay network topologies connecting all nodes that offer promising...

conference paper 2007

document

Towards Software Component Procurement Automation

Gross, H.G. (author), Lormans, M. (author), Zhou, J. (author)

One of the first steps of component procurement is the identification of required component features in large repositories of existing components. On the highest level of abstraction, component requirements as well as component descriptions are usually written in natural language. Therefore, we can reformulate component procurement as a text...

report 2007

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Control of DFIG under unsymmetrical voltage dip

Zhou, Y. (author), Bauer, P. (author), Ferreira, J.A., Pierik, J. (author)

conference paper 2007

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Grid-connected and islanded operation of a hybrid power system

Zhou, Y. (author), Ferreira, J.A. (author), Bauer, P. (author)

conference paper 2007

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Measuring the internet

Zhou, X. (author)

The Internet is a collection of networks that use the TCP/IP suite of protocols. It has a huge impact on human activity. There are currently hundreds of millions of computers connected to the Internet, generating several petabytes traffic a day. Internet is still growing rapidly. However, the Internet today is not yet precisely characterized....

doctoral thesis 2006

document

Hopcount in the NICE Application Layer Multicast Protocol

Tang, H. (author), Janic, M. (author), Zhou, X. (author)

conference paper 2006

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Estimation of Perceived Quality of Service for Applications on IPv6 Network

Zhou, X. (author), Kooij, R.E. (author), Uijterwaal, H. (author), Van Mieghem, P. (author)

conference paper 2006

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High performance repetitive control of PWM DC-AC converters with real-time phase-lead FIR filter

Ye, Y. (author), Zhou, K. (author), Wang, D. (author), Wang, J.C. (author)

journal article 2006

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Estimation of Voice over IP Quality in the Netherlands

Zhou, X. (author), Muller, F. (author), Kooij, R.E. (author), Van Mieghem, P. (author)

conference paper 2006

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Hierarchical Peer-to-Peer Networks using Lightweight SuperPeer Topologies

Kleis, M. (author), Keong Lua, E. (author), Zhou, X. (author)

conference paper 2005

document

Hopcount in Application Layer Multicast Schemes

Janic, M. (author), Cempaka Wangi, N.I. (author), Zhou, X. (author), Van Mieghem, P. (author)

conference paper 2005