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Wetland eco-engineering with fine sediment

The research presented in this thesis has highlighted (bio)geochemical, hydrological, and wetland ecological processes that interact and enhance ecosystem development on wetlands built on fine sediment. A combination of greenhouse and laboratory experiments were conducted. Some measured data from these experiments formed important input for subsequent analysis in a modeling environment. The findings presented in Chapters 2-6 can be divided into four topics: 1) Plant–soil interactions in the terrestrial zone, 2) wetland–terrestrial processes influencing nutrient availability in the land–water zone, 3) effects of plants on sediment consolidation in the terrestrial zone, and 4) effects of bioturbation on nutrient availability in the aquatic zone. The next sections give a summary of the results for these four topics. The last section summarizes the recommendations formulated for the Marker Wadden project.

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12/31/2017

Wetland eco-engineering with fine sediment

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Developing a new curriculum for energy engineering at HU University of Applied Sciences Utrecht

Full text via link Curricula in higher education are constantly subject to change, especially those curricula that educate people in the dynamic field of energy and sustainability. The aim of this paper is to describe the process of developing a new curriculum in energy engineering called Advanced Energy Technology at the HU University of Applied Sciences Utrecht

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12/31/2011

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Engineering emergence

Dit proefschrift presenteert twee theoretische kaders voor het ontwerpen van games en beschrijft hoe game designers deze kunnen inzetten om het game ontwerpproces te stroomlijnen. Er bestaan op dit moment meerdere ontwerptheorie¨en voor games, maar geen enkele kan rekenen op een breed draagvlak binnen de game industrie. Vooral academische ontwerptheorie¨en hebben regelmatig een slechte reputatie. Het eerste kader dat game designers inzicht biedt in spelregels en hun werking heet Machinations en maakt gebruik van dynamische, interactieve diagrammen. Het tweede theoretische kader van dit proefschrift, Mission/Space, richt zich op level-ontwerp en spelmechanismen die de voortgang van een speler bepalen. In tegenstelling tot bestaande modellen voor level-ontwerp, bouwt Mission/Space voort op het idee dat er in een level twee verschillende structuren bestaan. Mission-diagrammen worden gebruikt om de structuur van taken en uitdagingen voor de speler te formaliseren, terwijl space-diagrammen de ruimtelijke constructie formaliseren. Beide constructies zijn aan elkaar gerelateerd, maar zijn niet hetzelfde. De verschillende wijzen waarop missies geprojecteerd kunnen worden op een bepaalde ruimte speelt uiteindelijk een belangrijke rol in de totstandkoming van de spelervaring.

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12/31/2011

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Product Design & Engineering, van vuistbijl tot mobieltje

Dames en heren, het is mij een grote eer dat u met zo velen gekomen bent om te luisteren naar mijn openbare les in het kader van mijn benoeming tot lector product design & engineering. Ik begrijp best dat u gekomen bent, want product design & engineering is belangrijk. Zonder product design & engineering was u hier tenslotte niet eens geweest. De auto, trein of bus waarmee u hier gekomen bent, zijn mede tot stand gekomen dankzij product design & engineering. Dat u mij ook achter in de zaal kunt horen, heeft u te danken aan ditzelfde vakgebied. En dat u aan het eind van deze openbare les mogelijk pijn in uw rug heeft door een oncomfortabele zit is er ook een gevolg van. Kortom: product design & engineering is een belangrijk vakgebied waarmee we in ons dagelijks bestaan voortdurend geconfronteerd worden, aangenaam of niet. Mijn voordracht valt in drieën uiteen. Eerst sta ik stil bij de titel: Van vuistbijl tot mobieltje. Aan de hand van deze objecten illustreer ik de historische achtergronden van het vakgebied product design & engineering. Daarna ga ik dieper in op het begrip ontwerpen. Het derde deel van mijn openbare les gaat over de ambitieuze plannen van de kenniskring product design & engineering. Ik sluit mijn openbare les af met het mobieltje, maar hoe blijft nog even een verrassing.

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12/31/2001

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Composites in aerospace and mechanical engineering

An important step towards improving performance while reducing weight and maintenance needs is the integration of composite materials into mechanical and aerospace engineering. This subject explores the many aspects of composite application, from basic material characterization to state-of-the-art advances in manufacturing and design processes. The major goal is to present the most recent developments in composite science and technology while highlighting their critical significance in the industrial sector—most notably in the wind energy, automotive, aerospace, and marine domains. The foundation of this investigation is material characterization, which offers insights into the mechanical, chemical, and physical characteristics that determine composite performance. The papers in this collection discuss the difficulties of gaining an in-depth understanding of composites, which is necessary to maximize their overall performance and design. The collection of articles within this topic addresses the challenges of achieving a profound understanding of composites, which is essential for optimizing design and overall functionality. This includes the application of complicated material modeling together with cutting-edge simulation tools that integrate multiscale methods and multiphysics, the creation of novel characterization techniques, and the integration of nanotechnology and additive manufacturing. This topic offers a detailed overview of the current state and future directions of composite research, covering experimental studies, theoretical evaluations, and numerical simulations. This subject provides a platform for interdisciplinary cooperation and creativity in everything from the processing and testing of innovative composite structures to the inspection and repair procedures. In order to support the development of more effective, durable, and sustainable materials for the mechanical and aerospace engineering industries, we seek to promote a greater understanding of composites.

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11/18/2023

Composites in aerospace and mechanical engineering

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Addition to Systems Design and Engineering

Additions to the book "Systems Design and Engineering" by Bonnema et.al. Subjects were chosen based on the Systems Engineering needs for Small and Medium Enterprises, as researched in the SESAME project. The

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05/31/2022

Addition to Systems Design and Engineering

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Engineering safety recommendations

Taking into account the lack of uniform guidelines for the design and classification of safety recommendations, a relevant framework was developed according to academic and professional literature. The framework includes nine design criteria for recommendations, it incorporates classifications of their scope and expected effectiveness, and it was used to perform a questionnaire survey across aviation professionals involved in the generation of safety recommendations. The goal of the survey was to capture (1) whether practitioners are knowledgeable about the design criteria, (2) the degree to which they apply those criteria along with corresponding reasons, (3) perceptions of the expected effectiveness of types of controls introduced through recommendations, (4) the frequency of generating each control type and respective explanations, and (5) the extent to which practitioners focus on each of the categories of recommendations’ scope and the relevant reasons. Overall, the results showed: an adequate level of knowledge of the design criteria; a strong positive association of the knowledge on a particular criterion with the degree of its implementation; a variety of frequencies the recommendations are addressed to each of the scope areas; a reverse order of perception of the expected effectiveness of control types compared to the literature suggestions. A thematic analysis revealed a broad spectrum of reasons about the degree to which the design criteria are applied, and the extent to which the various types of recommendations are generated. The results of the survey can be exploited by the aviation sector to steer its relevant education and training efforts and assess the need for influencing the direction safety recommendations are addressed. Similar research is suggested to be conducted by organizations and regional and international agencies of any industry sector by ensuring a larger sample.

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06/17/2018

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The city game fit : The reverse engineering of urban games

With the increasing mobility and connectivity of technological devices in smart cities, games are also used to address urban challenges like citizenship or equality. In my thesis, I argue that the design of many of these game solutions does not fit the challenge they try to address. For example, Pokémon Go ultimately became more a social facilitator than a pure for-profit app, while Geocaching for education purposes has proven ineffective. In order to assess the efficacy of the design of these solutions and suggest future improvements, I introduce an interdisciplinary method called ‘The Action Space Analysis’ which can be used to measure and judge how well the design fits with a challenge. First, I suggest a perspective on game design focused on the acceptance that whatever possible actions are contained in the game, some player will play them. Secondly, the city challenges are understood as the pursuit of a city model, an understanding of how you want the city to be. The action space analysis takes a game design and uncovers all possible actions of the game to check and score how well these actions fit the city model pursued. This checks how present the possibility is of players performing the desired actions from the city model. I check this for Geocaching, Ontdek Overvecht, Cities: Skylines, and Pokémon Go. The action space analysis works as validation method that allows designers to improve their games, critics to analyse city solutions better, and municipalities to pass informed judgment on suggested solutions.

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06/21/2020

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Wetland eco-engineering with fine sediment

Developing a new curriculum for energy engineering at HU University of Applied Sciences Utrecht

Engineering emergence

Product Design & Engineering, van vuistbijl tot mobieltje

Composites in aerospace and mechanical engineering

Addition to Systems Design and Engineering

Engineering safety recommendations

The city game fit : The reverse engineering of urban games

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Sjors Martens

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