With summaries in Dutch, Esperanto and English. DOI: 10.4233/uuid:d7132920-346e-47c6-b754-00dc5672b437 "The subject of this study is deformation analysis of the earth's surface (or part of it) and spatial objects on, above or below it. Such analyses are needed in many domains of society. Geodetic deformation analysis uses various types of geodetic measurements to substantiate statements about changes in geometric positions.Professional practice, e.g. in the Netherlands, regularly applies methods for geodetic deformation analysis that have shortcomings, e.g. because the methods apply substandard analysis models or defective testing methods. These shortcomings hamper communication about the results of deformation analyses with the various parties involved. To improve communication solid analysis models and a common language have to be used, which requires standardisation.Operational demands for geodetic deformation analysis are the reason to formulate in this study seven characteristic elements that a solid analysis model needs to possess. Such a model can handle time series of several epochs. It analyses only size and form, not position and orientation of the reference system; and datum points may be under influence of deformation. The geodetic and physical models are combined in one adjustment model. Full use is made of available stochastic information. Statistical testing and computation of minimal detectable deformations is incorporated. Solution methods can handle rank deficient matrices (both model matrix and cofactor matrix). And, finally, a search for the best hypothesis/model is implemented. Because a geodetic deformation analysis model with all seven elements does not exist, this study develops such a model.For effective standardisation geodetic deformation analysis models need: practical key performance indicators; a clear procedure for using the model; and the possibility to graphically visualise the estimated deformations."
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Author supplied: "This paper gives a linearised adjustment model for the affine, similarity and congruence transformations in 3D that is easily extendable with other parameters to describe deformations. The model considers all coordinates stochastic. Full positive semi-definite covariance matrices and correlation between epochs can be handled. The determination of transformation parameters between two or more coordinate sets, determined by geodetic monitoring measurements, can be handled as a least squares adjustment problem. It can be solved without linearisation of the functional model, if it concerns an affine, similarity or congruence transformation in one-, two- or three-dimensional space. If the functional model describes more than such a transformation, it is hardly ever possible to find a direct solution for the transformation parameters. Linearisation of the functional model and applying least squares formulas is then an appropriate mode of working. The adjustment model is given as a model of observation equations with constraints on the parameters. The starting point is the affine transformation, whose parameters are constrained to get the parameters of the similarity or congruence transformation. In this way the use of Euler angles is avoided. Because the model is linearised, iteration is necessary to get the final solution. In each iteration step approximate coordinates are necessary that fulfil the constraints. For the affine transformation it is easy to get approximate coordinates. For the similarity and congruence transformation the approximate coordinates have to comply to constraints. To achieve this, use is made of the singular value decomposition of the rotation matrix. To show the effectiveness of the proposed adjustment model total station measurements in two epochs of monitored buildings are analysed. Coordinate sets with full, rank deficient covariance matrices are determined from the measurements and adjusted with the proposed model. Testing the adjustment for deformations results in detection of the simulated deformations."
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From the article: Abstract Adjustment and testing of a combination of stochastic and nonstochastic observations is applied to the deformation analysis of a time series of 3D coordinates. Nonstochastic observations are constant values that are treated as if they were observations. They are used to formulate constraints on the unknown parameters of the adjustment problem. Thus they describe deformation patterns. If deformation is absent, the epochs of the time series are supposed to be related via affine, similarity or congruence transformations. S-basis invariant testing of deformation patterns is treated. The model is experimentally validated by showing the procedure for a point set of 3D coordinates, determined from total station measurements during five epochs. The modelling of two patterns, the movement of just one point in several epochs, and of several points, is shown. Full, rank deficient covariance matrices of the 3D coordinates, resulting from free network adjustments of the total station measurements of each epoch, are used in the analysis.
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In this thesis several studies are presented that have targeted decision making about case management plans in probation. In a case management plan probation officers describe the goals and interventions that should help offenders stop reoffending, and the specific measures necessary to reduce acute risks of recidivism and harm. Such a plan is embedded in a judicial framework, a sanction or advice about the sanction in which these interventions and measures should be executed. The topic of this thesis is the use of structured decision support, and the question is if this can improve decision making about case management plans in probation and subsequently improve the effectiveness of offender supervision. In this chapter we first sketch why structured decision making was introduced in the Dutch probation services. Next we describe the instrument for risk and needs assessment as well as the procedure to develop case management plans that are used by the Dutch probation services and that are investigated in this thesis. Then we describe the setting of the studies and the research questions, and we conclude with an overview of this thesis.
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BACKGROUND: Ambulatory children with Spina Bifida (SB) often show a decline in physical activity leading to deconditioning and functional decline. Therefore, assessment and promotion of physical activity is important. Because energy expenditure during activities is higher in these children, the use of existing pediatric equations to predict physical activity energy expenditure (PAEE) may not be valid. AIMS: (1) To evaluate criterion validity of existing predictions converting accelerocounts into PAEE in ambulatory children with SB and (2) to establish new disease-specific equations for PAEE. METHODS: Simultaneous measurements using the Actical, the Actiheart, and indirect calorimetry took place to determine PAEE in 26 ambulatory children with SB. DATA ANALYSIS: Paired T-tests, Intra-class correlations limits of agreement (LoA), and explained variance (R2) were used to analyze validity of the prediction equations using true PAEE as criterion. New equations were derived using regression techniques. RESULTS: While T-tests showed no significant differences for some models, the predictions developed in healthy children showed moderate ICC’s and large LoA with true PAEE. The best regression models to predict PAEE were: PAEE = 174.049 + 3.861 × HRAR – 60.285 × ambulatory status (R2 = 0.720) and PAEE = 220.484 + 0.67 × Actical counts – 60.717 × ambulatory status (R2 = 0.681). CONCLUSIONS: Existing equations to predict PAEE are not valid for use in children with SB for the individual evaluation of PAEE. The best regression model was based on HRAR in combination with ambulatory status, followed by a new model for the Actical monitor. A benefit of HRAR is that it does not require the use of expensive accelerometry equipment. Further cross-validation of these models is still needed.
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This investigation explores relations between 1) a theory of human cognition, called Embodied Cognition, 2) the design of interactive systems and 3) the practice of ‘creative group meetings’ (of which the so-called ‘brainstorm’ is perhaps the best-known example). The investigation is one of Research-through-Design (Overbeeke et al., 2006). This means that, together with students and external stakeholders, I designed two interactive prototypes. Both systems contain a ‘mix’ of both physical and digital forms. Both are designed to be tools in creative meeting sessions, or brainstorms. The tools are meant to form a natural, element in the physical meeting space. The function of these devices is to support the formation of shared insight: that is, the tools should support the process by which participants together, during the activity, get a better grip on the design challenge that they are faced with. Over a series of iterations I reflected on the design process and outcome, and investigated how users interacted with the prototypes.
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Dit paper onderzoekt de oorsprong van Geert Wilders' media-appeal. Geen Nederlandse politicus heeft in de voorbije vijf jaar zoveel journalistieke aandacht gegenereerd als de leider van de Partij voor de Vrijheid (PVV). Althans, dat is een wijdverbreid idee onder politici, academici en journalisten zelf. Hier staat de vraag centraal wat Wilders aantrekkelijk maakt als onderwerp en bron van nieuws voor Nederlandse journalisten. Daartoe wordt eerst een overzicht gegeven van theorieën die verklaren hoe (rechts-) populistische politici media-aandacht verkrijgen. In het algemeen geldt daarbij dat zij - om succesvol te zijn - evenwicht trachten te vinden tussen een outsiderpositie die hen nieuwswaardig maakt, en een establishment-positie die hen geloofwaardigheid verschaft bij zowel publiek, medepolitici als media. In een secundaire analyse worden vervolgens 62 studies onderzocht die in de voorbije jaren zijn gedaan naar Wilders en naar zijn verhouding met de media. Hieruit blijkt dat Wilders in sterke mate voldoet aan het profiel van de rechts-populistische politicus uit de literatuur, maar dat hij tegelijkertijd een autoriteit, effectiviteit en legitimiteit bezit die hem mainstream maken. Beide - ogenschijnlijk tegenstrijdige - beelden van de PVV-leider verklaren zijn aantrekkingskracht voor journalisten: dat van outsider én dat van insider. Hij komt daarmee vergaand tegemoet aan medialogica en wat deze van politici vraagt. Bovendien verschaffen de felle reacties van tegenstanders hem extra publiciteit: reacties die hij vaak zelf oproept door zijn emotionele, provocatieve en confronterende boodschap.
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Binnen het Raak Pro project ‘Praten kan ik niet …, maar communiceren wil ik wel’ hebben we onderzoek gedaan naar het gebruik van Communicatie Ondersteunende Hulpmiddelen (COH) bij kinderen/jongeren met ernstige communicatieve en meervoudige beperkingen. Het ging om kinderen/jongeren die niet, nauwelijks of zeer slecht verstaanbaar spreken vanwege hun meervoudige beperkingen. We onderzochten hoe zij en mensen in hun omgeving, bijvoorbeeld ouders, leraren en/of behandelaars geholpen konden worden bij het zoeken, selecteren en inzetten van de best passende en meest adequate hulpmiddelen om de communicatie van het kind/de jongere te ondersteunen en verder te ontwikkelen. Goede, optimaal aangepaste hulmiddelen, methoden en technieken voor communicatieondersteuning vergroten de mogelijkheden en kansen van deze kinderen en jongeren om meer (zelf)redzaam te worden, meer regie te hebben over eigen kwaliteit van leven en meer succesvol deel te nemen aan verschillende activiteiten in allerlei sociale en maatschappelijke contexten: thuis, op school, in dagbesteding of werk en in de vrije tijd. Hiervoor is een Routekaart ontwikkeld. Onderdeel van de Routekaart is het proces van assessment waarin onderzocht wordt welke barrières/functioneringsproblemen het kind/de jongere ervaart bij het communiceren met anderen; wat zijn/haar behoeften en wensen zijn wat betreft het communiceren en welke mogelijkheden de persoon heeft om, eventueel met behulp van een COH, te kunnen communiceren in alledaagse levenssituaties.
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Dit eindrapport behandelt het onderzoek van CDM@Airports, gericht op Collaborative Decision Making in de logistieke processen van luchtvrachtafhandeling op Nederlandse luchthavens. Dit project, met een looptijd van ruim twee jaar, is gestart op 8 november 2021 en geëindigd op 31 december 2023. HET PROJECT CDM@AIRPORTS OMVAT DRIE WERKPAKKETTEN: 1. Projectmanagement, dit betreft de algehele aansturing van het project incl. stuurgroep, werkgroep en stakeholdermanagement. 2. Onderzoeksactiviteiten, bestaande uit a) cross-chain-samenwerking, b) duurzaamheid en c) adoptie van digitale oplossingen voor datagedreven logistiek. 3. Management van een living lab, een ‘quadruple-helix-setting’ die fysieke en digitale leeromgevingen integreert voor onderwijs en multidisciplinair toegepast onderzoek.
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