Beyond Nyquist in Frequency Response Function Identification: Applied to Slow-Sampled Systems

Fast-sampled models are essential for control design, e.g., to address intersample behavior. The aim of this letter is to develop a non-parametric identification technique for fast-sampled models of systems that have relevant dynamics and actuation above the Nyquist frequency of the sensor, such as vision-in-the-loop systems. The developed...

Frequency Domain Identification of Multirate Systems: A Lifted Local Polynomial Modeling Approach

Frequency-domain representations of multirate systems are essential for controller design and performance evaluation of multirate systems and sampled-data control. The aim of this paper is to develop a time-efficient closed-loop identification approach for multirate systems in the frequency-domain. The developed method utilizes local polynomial...

Genetically encoded phospholipid production for autonomous synthetic cell proliferation

Cells, the building blocks of life, are vastly complex. This complexity confers to every living organism the ability to maintain oneself, reproduce oneself, and evolve. Creating a minimal system from nonliving components that is capable of self-maintenance, self-reproduction, and evolvability, will greatly increase our understanding of life....

Retrospective Camera-Based Respiratory Gating in Clinical Whole-Heart 4D Flow MRI

Background: Respiratory gating is generally recommended in 4D flow MRI of the heart to avoid blurring and motion artifacts. Recently, a novel automated contact-less camera-based respiratory motion sensor has been introduced. Purpose: To compare camera-based respiratory gating (CAM) with liver-lung-navigator-based gating (NAV) and no gating ...

Genetically controlled membrane synthesis in liposomes

Lipid membranes, nucleic acids, proteins, and metabolism are essential for modern cellular life. Synthetic systems emulating the fundamental properties of living cells must therefore be built upon these functional elements. In this work, phospholipid-producing enzymes encoded in a synthetic minigenome are cell-free expressed within liposome...

Why novel sanitary systems are hardly introduced?

Innovations are required in urban infrastructures due to the pressing needs for mitigating climate change and prevent resource depletion. In order to address the slow pace of innovation in urban systems, this paper analyses factors involved in attempts to introduce novel sanitary systems. Today new requirements are important: sanitary systems...

Self-replication of DNA by its encoded proteins in liposome-based synthetic cells

Replication of DNA-encoded information and its conversion into functional proteins are universal properties of life. In an effort toward the construction of a synthetic minimal cell, we implement here the DNA replication machinery of the Φ29 virus in a cell-free gene expression system. Amplification of a linear DNA template by self-encoded,...

Differential patterns of age-related cortical and subcortical functional connectivity in 6-to-10 year old children: A connectome-wide association study

Introduction: Typical brain development is characterized by specific patterns of maturation of functional networks. Cortico-cortical connectivity generally increases, whereas subcortico-cortical connections often decrease. Little is known about connectivity changes amongst different subcortical regions in typical development. Methods: This...

Vervolgonderzoek monitoringsprogramma en validatie/verbetering van huidige beoordeling op golfklappen

Periodiek moeten asfaltdijkbekledingen in Nederland worden onderworpen aan een veiligheidsbeoordeling. Hiervoor wordt de structurele conditie aan de hand van een vaste beoordelingsmethode vastgelegd. Op basis van deze structurele conditie wordt de veiligheid tegen het schadebrengend effect van golfklappen vastgesteld. In 2007 is een studie [1]...

Vervolgonderzoek monitoringsprogramma en validatie/verbetering van huidige beoordeling op golfklappen

Periodiek moeten asfaltdijkbekledingen in Nederland worden onderworpen aan een veiligheidsbeoordeling. Hiervoor wordt de structurele conditie aan de hand van een vaste beoordelingsmethode vastgelegd. Op basis van deze structurele conditie wordt de veiligheid tegen het schadebrengend effect van golfklappen vastgesteld. In 2007 is een studie [1]...

Modelling uncertainty in physical database design

Physical database design can be marked as a crucial step in the overall design process of databases. The outcome of physical database design is a physical schema which describes the storage and access structures of the stored database. The selection of an efficient physical schema is an NP-complete problem. A significant number of efforts has...

Synthese van vinylchloride door oxychlorering van etheen

Document(en) uit de collectie Chemische Procestechnologie

Bereiding van methyl-ethylketon

Document(en) uit de collectie Chemische Procestechnologie

Bereiding van salpeterzuur uit ammoniak

Document(en) uit de collectie Chemische Procestechnologie

Beschouwing over de uitstrooming der Opper Rijn- en Maas-wateren door de Nederlandsche rivieren tot in zee: benevens de overwegingen dezer beschouwing van de heeren Goudriaan, Van Utenhove, Moll en Donker Curtius

Plan van Jan Blanken voor de verbetering van de afvoer van de Rijn (en Waal) door het graven van een nieuwe afwatering vanaf Werkendam door de Biesbosch naar de Amer (de Nieuwe Merwede), en het afsluiten van de Beneden Merwede bij Hardinxveld. Deze tekst is de presentatie van zijn plan bij het Kon. Ned. Instituut van Wetenschappen. In 1815 had...