A review has been completed for a verification and validation (V&V) of the (Excel) BioGas simulator or EBS model. The EBS model calculates the environmental impact of biogas production pathways using Material and Energy Flow Analysis, time dependent dynamics, geographic information, and Life Cycle analysis. Within this article a V&V method is researched, selected and applied to validate the EBS model. Through the use of the method described within this article: mistakes in the model are resolved, the strengths and weaknesses of the model are found, and the concept of the model is tested and strengthened. The validation process does not only improve the model but also helps the modelers in widening their focus and scope. This article can, therefore, also be used in the validation process of similar models. The main result from the V&V process indicates that the EBS model is valid; however, it should be considered as an expert model and should only be used by expert users.
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In this paper we propose a novel approach for validating a simulation model for a passengers' airport terminal. The validation approach is based on a "historical data" and "model-to-model" validation approach, and the novelty is represented by the fact that the model used as comparison uses historical data from different data sources and technologies. The proposed validation approach , which is presented as part of the IMHOTEP project, implements various data fusion and data analytics methods to generate the passenger "Activity-Travel-Diary", which is the model that is then compared with the results from the simulation model. The data used for developing the "Activity-Travel-Diary" comes from different sources and technologies such as: passengers data (personal mobile phone, apps), airport data (airport Wi-Fi, GPS, scanning facilities), and flight Information (flight schedules, gate allocation etc.). The simulation model is based on an agent-based simulation paradigm and includes all the passengers flows and operations within a terminal airport. The proposed validation approach is implemented in a real-life case study, Palma de Mallorca Airport, and preliminary results of the validation (calibration) process of the simulation model are presented.
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Archives are, more than ever, organizational and technological constructs, based on organizational demands, desires, and considerations influencing configuration, management, appraisal, and preservation. For that reason, they are, more than ever, distortions of reality, offering biased (and/or manipulated) images of the past and present an extremely simplified mirror of social reality. The information objects within that archive are (again: more than ever), fragile, manipulable, of disputable provenance, doubtful context, and uncertain quality. Their authenticity is in jeopardy.The “Allure of Digital Archives” will be more about finding knowledge about the archive as a whole than about finding knowledge hidden in the information objects that are its constituents. It will be about determining the value of a digital archive as a “trusted” resource for historical research. To be successful in that endeavour, it will be necessary to assess the possibility to “reconstruct the past” of the digital archive. That assessment would allow historians to understand quality, provenance, context, content, and accessibility of the digital archive, not only in its design stage but also in its life cycle.In this chapter, I present the theoretical framework of the “Archive–as–Is” as an instrument for such an assessment. It is possible for historians to use this framework as a declarative model for the way archives have been designed, configured, managed, and maintained. It will allow historians to understand why archives are as they are, and why records are part of it (or not). Using the framework, historians can determine the research value of a digital archive as a historical resource.
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PCK is seen as the transformation of content knowledge and pedagogical knowledge into a different type of knowledge that is used to develop and carry out teaching strategies. To gain more insight into the extent to which PCK is content specific, the PCK about more topics or concepts should be compared. However, researchers have rarely compared teachers’ concrete PCK about more than one topic. To examine the content dependency of PCK, we captured the PCK of sixteen experienced Dutch history teachers about two historical contexts (i.e. topics) using interviews and Content Representation questionnaires. Analysis reveals that all history teachers’ PCK about the two contexts overlaps, although the degree of overlap differs. Teachers with relatively more overlap are driven by their overarching subject related goals and less by the historical context they teach. We discuss the significance of these outcomes for the role of teaching orientation as a part of PCK.
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For the ‘Rotterdam Project’, a large amount of historical data on patrons of Rotterdam’s main theatres during the ‘long’ 19th century (1773–1914)was collected, digitally registered and statistically analysed. The data was gathered from the theatre archives of the city of Rotterdam and included data on such specifics as ticket sales, repertoire and featured performers. The database holds prosopography information on over 16,000 patrons and almost 15,000registered ticket sales to these patrons. This dataset (https:// doi.org/doi:10.21943/auas.7381127) can be used to make comparisons to the datasets of similarly sized cities in other countries during the same period and for broader re- search on 19th-century cultural history. So far, the data has been mainly applied to empirically test the master narrative of theatre historiography on the social composi- tion of theatre audiences. The analyses based on the data show that this narrative must, for the most part, be rejected.
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Background: Recent technological developments such as wearable sensors and tablets with a mobile internet connection hold promise for providing electronic health home-based programs with remote coaching for patients following total hip arthroplasty. It can be hypothesized that such a home-based rehabilitation program can offer an effective alternative to usual care.Objective: The aim of this study was to determine the effectiveness of a home-based rehabilitation program driven by a tablet app and remote coaching for patients following total hip arthroplasty.Methods: Existing data of two studies were combined, in which patients of a single-arm intervention study were matched with historical controls of an observational study. Patients aged 18-65 years who had undergone total hip arthroplasty as a treatment for primary or secondary osteoarthritis were included. The intervention consisted of a 12-week home-based rehabilitation program with video instructions on a tablet and remote coaching (intervention group). Patients were asked to do strengthening and walking exercises at least 5 days a week. Data of the intervention group were compared with those of patients who received usual care (control group). Effectiveness was measured at four moments (preoperatively, and 4 weeks, 12 weeks, and 6 months postoperatively) by means of functional tests (Timed Up & Go test and the Five Times Sit-to Stand Test) and self-reported questionnaires (Hip disability and Osteoarthritis Outcome Score [HOOS] and Short Form 36 [SF-36]). Each patient of the intervention group was matched with two patients of the control group. Patient characteristics were summarized with descriptive statistics. The 1:2 matching situation was analyzed with a conditional logistic regression. Effect sizes were calculated by Cohen d.Results: Overall, 15 patients of the intervention group were included in this study, and 15 and 12 subjects from the control group were matched to the intervention group, respectively. The intervention group performed functional tests significantly faster at 12 weeks and 6 months postoperatively. The intervention group also scored significantly higher on the subscales "function in sport and recreational activities" and "hip-related quality of life" of HOOS, and on the subscale "physical role limitations" of SF-36 at 12 weeks and 6 months postoperatively. Large effect sizes were found on functional tests at 12 weeks and at 6 months (Cohen d=0.5-1.2), endorsed by effect sizes on the self-reported outcomes.Conclusions: Our results clearly demonstrate larger effects in the intervention group compared to the historical controls. These results imply that a home-based rehabilitation program delivered by means of internet technology after total hip arthroplasty can be more effective than usual care.Keywords: home-based rehabilitation program; internet; osteoarthritis; physiotherapy; rehabilitation; remote coaching; tablet app; total hip arthroplasty; total hip replacement; usual care.
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This paper presents the development and construct validation of an instrument for identification of resilient and less-resilient middle adolescents in high school. Purpose of this identification is a qualitative in-depth interview study of perceptions of resilient and less resilient middle-adolescents on their school environment. The qualitative study will function as examination of contentvalidity of the presented instrument. A 33-item Resilient Behavior Questionnaire (VVL) and a 105-item personality questionnaire NPV-J (Dutch Personality Questionnaire- Youngsters) were administered to a sample of 400 middle adolescent high school students (age range 14-16). It was hypothesized that scores on specific components in the VVL would correlate highly with relevant factors of personality in the NPV-J. Principal Component Analysis and Correlation Analysis served as methods of investigation. Results of the quantitative study reveal three components in the VVL and a high correlation between the scores on these components and the resilient personality factor perseverance and non-resilient factor inadequacy in the NPV-J. Discussion focuses on explanation of the results and implications for further development of the VVL.
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The global agenda to move societies towards a more sustainable course of development also affects the lives of older people in our ageing populations. Therefore, it is important to understand the drivers, intentions and behaviours concerning sustainability among older adults. The aim of this study is to translate and cross-culturally validate an existing instrument (SustainABLE-16 Questionnaire), developed in the Netherlands, which measures how older people view the theme of environmental sustainability in their daily lives, for use in Romania, Poland, North Macedonia and Israel. The SustainABLE-16 covers three domains: 1) Pro-environmental behaviours; 2) Financial position; and 3) Beliefs. The scale was translated in Romanian, Polish, Macedonian, Albanian and Hebrew. Its 16 items were appraised for relevance by older people and experts in the field. A total of 2299 older people, including the original Dutch respondents, were included for the assessment of the level of measurement invariance across six languages, spoken in five countries. As the initial validation of the SustainABLE-16 did not meet internationally-recognised fit requirements, the shorter SustainABLE-8 was validated instead. This instrument proved valid for use in all participating countries (configural validity). Subsequently, increasingly constrained structural equation models were applied to test their fit with the data, ensuring that the fit did not deteriorate. The test results of measurement invariance across the countries indicated that items were stable, achieving partial scalar invariance, with five items demonstrating full scalar invariance. The shorter SustainABLE-8 functions uniformly across all language groups and can, therefore, be used to evaluate sustainable practices among older people. A better understanding of the drivers and practices among older citizens across Europe could, in turn, feed into more fitting public policies on sustainability in the built environment.
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The ambition of a transition to a sustainable society brings forth the dual challenge to preserve historical buildings and simultaneously improve the energy performance of our built environment. While engineers claim that a dramatic reduction of energy use in the built environment is feasible, it has proven to be a difficult and twisting road.In this paper we focus on historical buildings, where difficulties of energy reduction are paramount, as such buildings provide local identity and a connection to our past. It is a EU policy objective to conserve and redesign heritage buildings like prisons, military barracks, factories, stations, and schools. Such redesign should also ensure reduction of energy use without compromising historical identity. In this paper we conceptually and empirically investigate how the two conflicting aspirations unfold. In particular we elaborate the obduracy and scripts of buildings, to clarify how they resist change and invite a specific use. We analyse the tensions between identity and energy conservation in a case study of a restoration project in Franeker. This buildinghas recently undergone a restoration, with energy efficiency as one of its goals.Scripts and networks are traced by a combination of methods, such as studyinglayout, materials and building history, and qualitative interviews with restoration architects and users. We identified three types of strategies to conserve identity and energy: design strategies; identity strategies and network strategies. Such strategies are also relevant for other efforts where conservation and innovation have to be reconciled.
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