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van Koppen, L.M. (author), Dugulan, A.I. (author), Hensen, Emiel J.M. (author), Bezemer, G. Leendert (author)
Cobalt oxidation is a relevant deactivation pathway of titania-supported cobalt catalysts used in Fischer-Tropsch synthesis (FTS). To work towards more stable catalysts, we studied the effect of the surface area of the titania support and noble metal promotion on cobalt oxidation under simulated high conversion conditions. Mössbauer...
journal article 2024
document
Bezemer, H.J. (author), Awasthy, N. (author), Lukovic, M. (author)
A promising solution for reducing the carbon footprint of concrete is the use of alkali-activated concretes (AAC). Before this material can be widely applied, its long-term behaviour needs to be understood, especially since some studies reported a decrease of mechanical properties over time. Similarly, Prinsse et al. reported decreasing...
book chapter 2023
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Bezemer, H.J. (author), Awasthy, N. (author), Lukovic, M. (author)
Although alkali activated concretes (AACs) are promising for reducing the carbon emissions of concrete, in order to enable their wide application it is vital to understand their long-term behaviour. Herein, we report the development of mechanical properties of a ground granulated blast furnace slag (GGBFS)-based AAC and a binary fly ash (FA) ...
journal article 2023
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Groot, Stefan (author), Bani, Mirjam (author), Barendregt, Ester (author), Bezemer, Dirk (author), Blom, Marieke (author), Boelhouwer, P.J. (author), Bokeloh, Philip (author)
De Nederlandse woningmarkt is slecht toegankelijk, creëert vermogensongelijkheid en is grillig. Dat laatste is schadelijk voor onze economie. Bovendien is het huidige woonbeleid duur. Een grondige renovatie van het woonbeleid biedt een structurele oplossing.
journal article 2022
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van Koppen, L.M. (author), Dugulan, A.I. (author), Hensen, Emiel J.M. (author), Bezemer, G. Leendert (author)
The commercial application of cobalt-based Fischer-Tropsch synthesis (FTS) suffers from catalyst deactivation. One of the main deactivation mechanisms under industrial conditions is sintering. In this work, we explored the role of manganese oxide as a structural promoter against sintering in a carbon nanofiber supported cobalt model catalyst....
journal article 2022
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Gonugunta, P. (author), Dugulan, A.I. (author), Bezemer, G. Leendert (author), Brück, E.H. (author)
Operando spectroscopic techniques (Diffusive Reflective Infrared Fourier-Transform and Mössbauer emission spectroscopy) were combined to investigate the role of oxygenates deposition on deactivation of cobalt on titania Fischer-Tropsch catalysts at high pressure. Clear formation of carboxylates was seen for catalysts prepared via both...
journal article 2021
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Kabbedijk, Jaap (author), Bezemer, C. (author), Jansen, Slinger (author), Zaidman, A.E. (author)
Software as a service is frequently offered in a multi-tenant style, where customers of the application and their end-users share resources such as software and hardware among all users, without necessarily sharing data. It is surprising that, with such a popular paradigm, little agreement exists with regard to the definition, domain, and...
journal article 2015
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Bezemer, C.P. (author), Milon, E. (author), Zaidman, A. (author), Pouwelse, J. (author)
Regression testing can be done by re-executing a test suite on different software versions and comparing the outcome. For functional testing, the outcome of such tests is either pass (correct behaviour) or fail (incorrect behaviour). For non-functional testing, such as performance testing, this is more challenging as correct and incorrect are...
report 2014
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Bezemer, C. (author)
Multi-tenant software systems are Software-as-a-Service systems in which customers (or tenants) share the same resources. The key characteristics of multi-tenancy are hardware resource sharing, a high degree of configurability and a shared application and database instance. We can deduct from these characteristics that they lead to challenges...
doctoral thesis 2014
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Bezemer, C.P. (author), Zaidman, A. (author)
Preprint submitted to Elsevier. The goal of performance maintenance is to improve the performance of a software system after delivery. As the performance of a system is often characterized by unexpected combinations of metric values, manual analysis of performance is hard in complex systems. In this paper, we propose an approach that helps...
report 2013
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Bezemer, C. (author), Zaidman, A.E. (author)
The performance of a software system directly influences customer satisfaction. Self-adaptiveness can contribute to this customer satisfaction by (1) taking appropriate measures when the performance becomes critical, e.g., the system load is too high, or (2) scheduling intensive tasks when the load is low. We investigate how self-adaptive...
report 2012
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Bezemer, C.P. (author), Zaidman, A.E. (author), Van der Hoeven, A. (author), Van de Graaf, A. (author), Wiertz, M. (author), Weijers, R. (author)
Preprint of paper published in: ICSM 2012 - Proceedings of the IEEE International Conference on Software Maintenance, 23-28 September 2012; doi:10.1109/ICSM.2012.6405319 The goal of performance maintenance is to improve the performance of a software system after delivery. As the performance of a system is often characterized by unexpected...
report 2012
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Bezemer, C.P. (author), Cheplygina, V. (author), Zaidman, A. (author)
One of the key factors in customer satisfaction is application performance. To be able to guarantee good performance, it is necessary to take appropriate measures before a server overload occurs. While in small systems it is usually possible to predict server overload using a subjective human expert, an automated overload prediction mechanism is...
report 2011
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Bezemer, C.P. (author), Zaidman, A. (author)
One of the key factors in customer satisfaction is the application performance. In traditional settings, it is usually not very difficult to manually detect a performance problem, however, with the advent of ultra-large-scale (ULS) systems [4], manual performance monitoring and prediction becomes tedious and would thus ideally require automation...
report 2011
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Bezemer, C.P. (author), Zaidman, A. (author), Platzbeecker, B. (author), Hurkmans, T. (author), 't Hart, A. (author)
Multi-tenancy is a relatively new software architecture principle in the realm of the Software as a Service (SaaS) business model. It allows to make full use of the economy of scale, as multiple customers – “tenants” – share the same application and database instance. All the while, the tenants enjoy a highly configurable application, making it...
report 2010
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Bezemer, C. (author), Zaidman, A. (author)
Multi-tenancy is a relatively new software architecture principle in the realm of the Software as a Service (SaaS) business model. It allows to make full use of the economy of scale, as multiple customers "tenants" share the same application and database instance. All the while, the tenants enjoy a highly configurable application, making it...
report 2010
document
Parker, T. (author), Halkes, G. (author), Bezemer, M. (author), Langendoen, K. (author)
Most current WSN MAC protocol implementations have multiple tasks to perform—deciding on correct timing, sending of packets, sending of acknowledgements, etc. However, as much of this is common to all MAC protocols, there is duplication of functionality, which leads to larger MAC protocol code size and therefore increasing numbers of bugs....
journal article 2010
document
Bezemer, C.P. (author), Mesbah, A. (author), Van Deursen, A. (author)
This paper is a pre-print of: Cor-Paul Bezemer, Ali Mesbah, and Arie van Deursen. Automated Security Testing of Web Widget Interactions. In Proceedings of the 7th joint meeting of the European Software Engineering Conference and the ACM SIGSOFT Symposium on the Foundations of Software Engineering (ESEC/FSE’09). Research Papers. ACM. 2009. We...
report 2009
document
Bezemer, B.J. (author), Lelieveld, P.G.M. (author)
Document(en) uit de collectie Chemische Procestechnologie.
report 1992
document
Bezemer, M. (author), Schweitzer, E.J.A. (author)
Document(en) uit de collectie Chemische Procestechnologie
report 1991
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