bluuebunny/crossref_metadata_2025_split huggingface dataset:
Socioeconomic Residential Segregation and Income Inequality in Bogotá: An Analysis Based on Census Data of 2005
Authors: López Martínez Alexandra , Ceballos Mina Owen Eli 
Published: March 2021

AbstractResidential segregation is both a cause and consequence of socioeconomic inequalities. Since the 1990s, segregation patterns in Latin American cities have changed significantly. This is related to major urban transformations caused by privatization policies related to urban development, commercialization, and real estate activity. The main purpose of this chapter is to study residential socioeconomic segregation in the city of Bogotá, Colombia in 2005, using educational attainment as an indicator of socioeconomic status while considering the drivers of segregation during the 1990s. We also introduce a brief analysis of the relationship between residential segregation and inequality based on a model that allows replicating the income distribution of the population using census variables. This chapter shows that residential segregation in Bogotá is related to per capita income inequality, however, segregation may be caused by the dynamics of land and housing markets rather than inequality.
Socio-spatial Segregation and Exclusion in Mumbai
Authors: Shaban Abdul , Aboli Zinat 
Published: March 2021

AbstractIndian society is characterised by significant horizontal (religious, regional, linguistic) and vertical (income, occupation, caste) divisions. These socio-economic fragmentations significantly shape the production of space in cities. In fact, all major cities in the country are pervaded by socio-spatial divides, which often become sources of conflict, violence, exclusion and, also, solidarity. Mumbai is the industrial, commercial and financial capital of the country. Bollywood has, over the years, helped in carving out a distinct (pan) Indian identity for itself and the city, both within and outside India, and is a major rallying and unifying aspect for India. Among all its glitter, the city is also infamous for its underworld (originating from its excluded and marginalised neighbourhoods), slums and poor residential areas. The city is pervaded by socio-spatial fragmentation and is a divided city. This chapter shows that the highest level of segregation in Mumbai is based on religion (Muslims and Non-Muslims), followed by class, caste and tribe.
Revolution and Warfare: The North Before Conquest
Authors: van der Burg Martijn 
Published: March 2021

AbstractThis chapter lays the foundation for an understanding of Napoleonic governance in the Netherlands and Northwest Germany. Dutch and German lands were governed in many different ways in the early modern age. During the eighteenth century attempts at reform were made in both areas, with varying results. The French Revolution was both admired and feared, especially as it became clear that the ‘liberation’ of Europe entailed aggressive expansionism. France’s growth showed the difficulties of imposing rules and practices on a hitherto foreign population. Which policies were effective, which not? True, German secularization and mediatization (the historic Reichsdeputationshauptschluss of 1803), and repeated coup d’états in the Batavian Republic, restructured governance on the right bank of the Rhine. Yet, both in the Netherlands and Northwest Germany, the combination of awe of, and fear for, the French Empire strengthened identity formation, whether local, regional, or national, which was not necessarily beneficial for future integration into France.
Conquest and Incorporation: Pays Conquis or Pays Réunies?
Authors: van der Burg Martijn 
Published: March 2021

AbstractThis chapter investigates how the (nominally) independent states in the Netherlands and Northwest Germany were slowly but surely seized by French troops, and subsequently incorporated by imperial decree. The conquest and incorporation of the northern lands brought about radical political changes, as well as dilemmas. How were new territories to be fitted in: as dependencies taken by force (pays conquis), or as new departments on equal footing (pays réunies)? And to which extent did ‘on equal footing’ mean eradicating regional diversity within the Empire? Whether uniform structures were imposed too promptly, or not, was contested. The Emperor sent confidants northbound, to investigate existing conditions. Vice versa, Northerners visited Paris, to exert influence on the status of their projected departments. For Dutch and German dignitaries it was of the utmost importance to acknowledge Napoleon’s droit de conquête, while lobbying for an integration form that did justice to local circumstances. Eventually, both areas were given a full status within the Empire, taking into account national peculiarities to a certain extent, but only as long as that did not harm the interests of Old France.
Conclusions: Incomplete Integration
Authors: van der Burg Martijn 
Published: March 2021

AbstractThis study set out to provide insight into the integration of the Netherlands and Northwest Germany into the Napoleonic Empire, through the implementation of Napoleonic governance, distinguishing several phases. This concluding chapter puts the research findings into a larger context. After exploring the collapse and legacy of Napoleonic rule, the successive stages of conquest, incorporation, and integration are reflected upon. Both areas experienced similar tensions between the Napoleonic desire for uniformity and diverse traditions. Either a ‘harsh’ approach or a ‘mild’ approach was chosen, depending on the actors involved and the interaction between core and periphery. Interests and actions were not aligned, and in more extreme cases, there was downright animosity between Napoleonic officials. Therefore, in neither the Netherlands nor Northwest Germany complete integration was achieved. However, there was no definite blueprint for integration, as different groups had conflicting ideas on the desirable level of, and path to, integration. Ultimately, integration was incomplete, but the degree of incompleteness depends on the divergent norms set by the various parties.
Can Encrypted DNS Be Fast?
Authors: Hounsel Austin , Schmitt Paul , Borgolte Kevin , Feamster Nick 
Published: March 2021

AbstractIn this paper, we study the performance of encrypted DNS protocols and conventional DNS from thousands of home networks in the United States, over one month in 2020. We perform these measurements from the homes of 2,693 participating panelists in the Federal Communications Commission’s (FCC) Measuring Broadband America program. We found that clients do not have to trade DNS performance for privacy. For certain resolvers, DoT was able to perform faster than DNS in median response times, even as latency increased. We also found significant variation in DoH performance across recursive resolvers. Based on these results, we recommend that DNS clients (e.g., web browsers) should periodically conduct simple latency and response time measurements to determine which protocol and resolver a client should use. No single DNS protocol nor resolver performed the best for all clients.
Optimized cast components in the drive train of wind turbines and inner ring creep in the main bearing seat
Authors: Kirsch Julian , Kyling Hans 
Published: March 2021

AbstractUsing large components made of nodular cast iron (GJS) in wind turbines enables the application of lightweight construction through the high degree of design freedom. Besides the sand-casting process, casting into a permanent metal mould, i.e. chill casting, leads to a finer microstructure and higher quasi-static mechanical properties as well as higher fatigue strength. Unfortunately, in present design methodologies specific fatigue data is only available for sand cast and not for chilled cast GJS. Thus, lightweight design strategies for large, chilled cast components are not achievable, which led to the publicly funded project “Gusswelle”. Based on material investigations of EN-GJS-400-18-LT chill cast, an optimized hollow rotor shaft is developed. The design process and the resulting shaft design are presented. The optimized hollow rotor shaft prototype will be tested on a full-scale test bench to validate the design methodology. The intended validation plan as well as the test bench setup is shown in this paper. Furthermore, the decreasing wall thickness influences the interference fit between main bearing and hollow rotor shaft. Thus, through the applied bending moment, inner ring creep is more probable to occur in the main bearing seat. The creeping behaviour is investigated with finite element simulations and a measuring method is presented.
Development of a wind turbine gearbox virtual load sensor using multibody simulation and artificial neural networks
Authors: Azzam Baher , Schelenz Ralf , Roscher Björn , Baseer Abdul , Jacobs Georg 
Published: March 2021

AbstractA current development trend in wind energy is characterized by the installation of wind turbines (WT) with increasing rated power output. Higher towers and larger rotor diameters increase rated power leading to an intensification of the load situation on the drive train and the main gearbox. However, current main gearbox condition monitoring systems (CMS) do not record the 6‑degree of freedom (6-DOF) input loads to the transmission as it is too expensive. Therefore, this investigation aims to present an approach to develop and validate a low-cost virtual sensor for measuring the input loads of a WT main gearbox. A prototype of the virtual sensor system was developed in a virtual environment using a multi-body simulation (MBS) model of a WT drivetrain and artificial neural network (ANN) models. Simulated wind fields according to IEC 61400‑1 covering a variety of wind speeds were generated and applied to a MBS model of a Vestas V52 wind turbine. The turbine contains a high-speed drivetrain with 4‑points bearing suspension, a common drivetrain configuration. The simulation was used to generate time-series data of the target and input parameters for the virtual sensor algorithm, an ANN model. After the ANN was trained using the time-series data collected from the MBS, the developed virtual sensor algorithm was tested by comparing the estimated 6‑DOF transmission input loads from the ANN to the simulated 6‑DOF transmission input loads from the MBS. The results show high potential for virtual sensing 6‑DOF wind turbine transmission input loads using the presented method.
Low-stakes performance testing in Germany by the VERA assessment: analysis of the mode effects between computer-based testing and paper-pencil testing
Authors: Wagner Inga , Loesche Philipp , Bißantz Steven 
Published: March 2021

AbstractThe German school system employs centrally organized performance assessments (some of which are called “VERA”) as a way of promoting lesson development. In recent years, several German federal states introduced a computer-based performance testing system which will replace the paper-pencil testing system in the future. Scores from computer-based testing are required to be equivalent to paper-pencil testing scores so that the new testing medium does not lead to disadvantages for students. Therefore, the current study aimed at investigating the size of the mode effect and the moderating impact of students’ gender, academic achievement and mainly spoken language in everyday life. In addition, the variance of the mode effect across tasks was investigated. The study was conducted in four German federal states in 2019 using a field experimental design. The test scores of 5140 eighth-graders from 165 schools in the subject German were analysed. The results of multi-level modelling revealed that students’ test scores in the computerized version of the VERA test were significantly lower than in the paper-pencil version. Students with a lower academic achievement were more disadvantaged by the VERA computerized test. The results were inconsistent regarding the interactions between testing mode and students’ gender and mainly spoken language in everyday life. The variance of the mode effect across tasks was high. Research into different subjects and in other federal states and countries under different testing conditions might yield further evidence about the generalizability of these results.
It does not have to be either or! Assessing competence in medicine should be a continuum between an analytic and a holistic approach
Authors: Rotthoff Thomas , Kadmon Martina , Harendza Sigrid 
Published: March 2021

AbstractAssessing competence is a tremendous challenge in medical education. There are two contrasting approaches in competence assessment: an analytic approach that aims to precisely measure observable constituents and facets of competence and a holistic approach that focuses on a comprehensive assessment of competences in complex real situations reflecting actual performance. We would like to contribute to the existing discourse about medical competence and its assessment by proposing an approach that can provide orientation for the development of competence-based assessment concepts in undergraduate and postgraduate medical education. The approach follows Kane's framework of an “argument-based approach” to validity and is based on insights into task complexity, testing and learning theories as well as the importance of the learning environment. It describes a continuum from analytic to holistic approaches to assess the constituents and facets of competence to performance. We conclude that the complexity of a task should determine the selection of the assessment and suggest to use this approach to reorganize and adapt competence assessment.
Institutionalizing school failure: From abandoning to reintroducing a failing grade—the rationales behind Swedish grading reforms
Authors: Arensmeier Cecilia 
Published: March 2021

AbstractThe article aims to depict the political framing of three grading reforms in Swedish compulsory school, in terms of the political problem they are supposed to solve and what kind of attention is given to the lowest performing pupils. Discourse analysis is employed, focusing on statement producers. The empirical material consists of policy documents from the late 1930s to 2010. The analyses show that three cases of the same type of policy change, a new grading system, rely on very different problem representations. The changes were launched as an equality tool, an accountability measure and a remedy for declining results, respectively. The discourse about the least successful pupils differs. Reasonable demands and a ranking scale without a failing grade characterize the introduction of a norm-referenced system; a first criterion-referenced system rests on a belief that virtually all pupils will meet the formulated levels for passing, an expectation not met, and a changed focus behind the second criterion-referenced system normalizes that some pupils will fail compulsory school. The article also illustrates the merits of studying educational policy change through the theoretical lens of problem representations and directs attention to how reforms can have discursive effects as well as unintended side effects that matter substantially for some people.
Girls suffer: the prevalence and predicting factors of emotional problems among adolescents during upper secondary school in Norway
Authors: Haugan Jan Arvid , Frostad Per , Mjaavatn Per-Egil 
Published: March 2021

AbstractThis longitudinal, quantitative survey examined factors predicting 1077 Norwegian adolescents` emotional problems during Upper Secondary School (grades I–III, approximately 16–19 years old) considering the following research question: “To what extent do students in Upper Secondary School experience emotional problems, and how are these problems predicted by gender, academic/social self-concept, coping beliefs, appearance pressure and school stress?”. The mentioned variables were scrutinized through analysis of frequencies, zero order correlations and structural equation modeling. Results verified previous findings that there was an increase in emotional problems for adolescents, especially among girls. Furthermore, the study results indicate that coping beliefs is a crucial factor when it comes to the perception of pressure and stress, and the subsequent development of emotional health problems.
Multidimensional Retirement Planning Behaviors, Retirement Confidence, and Post-Retirement Health and Well-Being Among Chinese Older Adults in Hong Kong
Authors: Liu Chang , Bai Xue , Knapp Martin 
Published: March 2021

AbstractMaintaining health and well-being in later life is becoming increasingly crucial because of rapid population aging and prolonged years in retirement. Retirement planning may effectively enhance retirement preparedness and confidence and contribute to better post-retirement outcomes. The present study aimed to examine Hong Kong aging adults’ engagement in multidimensional retirement planning activities, their retirement confidence, as well as the mediating effects of retirement confidence on the relationships between retirement planning and health and subjective well-being (i.e., physical health, depressive symptoms, and life satisfaction). Face-to-face questionnaire survey was conducted to collect data from 630 retirees aged 50 years and over. The results showed that retirement planning both directly and indirectly influenced physical health, depressive symptoms, and life satisfaction through retirement confidence. Among the four planning subdomains (i.e., financial, health, social life, and psychological planning), health, social life, and psychological planning were found to have positive impacts on physical health and life satisfaction through increased retirement confidence levels, while only social life planning influenced depressive symptoms through retirement confidence. Retirement planning in financial domain was not correlated with retirement confidence but could directly benefit life satisfaction in retirement. The findings reveal the need for the policymakers and service providers to improve public education to raise future retirees’ awareness of the importance of retirement planning and promote retirement planning activities, especially social life planning.
Measuring institutional overlap in global governance
Authors: Haftel Yoram Z. , Lenz Tobias 
Published: March 2021

AbstractOver the past decade, an increasingly sophisticated literature has sought to capture the nature, sources, and consequences of a novel empirical phenomenon in world politics: the growing complexity of global governance. However, this literature has paid only limited attention to questions of measurement, which is a prerequisite for a more comprehensive understanding of global governance complexity across space and time. In taking a first step in this direction, we make two contributions in the article. First, we propose new quantitative measures that gauge the extent of complexity in global governance, which we conceptualize as the degree to which global governance institutions overlap. Dyadic, weighted, directed-dyadic, and monadic measures enable a multifaceted understanding of this important development in world politics. Second, we illustrate these measures by applying them to an updated version of the most comprehensive data set on the design of intergovernmental organizations (IGOs): the Measure of International Authority (MIA). This allows us to identify cross-sectional and temporal patterns in the extent to which important IGOs, which tend to form the core of sprawling regime complexes in many issue areas, overlap. We conclude by outlining notable implications for, and potential applications of, our measures for research on institutional design and evolution, legitimacy, and legitimation, as well as effectiveness and performance. This discussion underscores the utility of the proposed measures, as both dependent and independent variables, to researchers examining the sources and consequences of institutional overlap in global governance and beyond.
Enhancing students’ language in collective processes of knowledge construction in group work: the case of enlarging figures
Authors: Erath Kirstin 
Published: March 2021

AbstractAgainst the background of providing learning opportunities for meaningful mathematics for all students, the presented Design Research study had the goal of investigating how to support students facing language barriers while learning mathematics in phases of unmoderated group work. For this purpose, learning meaningful mathematics and demanding discourse practices are connected with quality interaction characteristics identified in research on productive group work. This theoretical consideration was implemented in a learning arrangement on similarity by means of four design principles for enhancing language in group work on meaningful mathematics. The empirical insights show to what extent the intended demanding discourse practices and quality interaction characteristics can be identified in different steps of knowledge construction, and to what extent they are supported by the design element ‘role cards’. Instead of calling for less unmoderated group work for students facing language barriers, the results of the study suggest that more research is needed to design scaffolds matching students’ needs, aside from whole-class discussions.
The Availability and Assessment of Potential Agricultural Residues for the Regional Development of Second-Generation Bioethanol in Thailand
Authors: Jusakulvijit Piradee , Bezama Alberto , Thrän Daniela 
Published: March 2021

AbstractThe agricultural sector is a major source of biomass feedstocks for biofuels. Even though biomass potential in Thailand has been analyzed on a national level, its distribution and potential have yet to be assessed on a regional and provincial scale. Therefore, the study aims to verify the possibility of decentralized second-generation bioethanol production from regionally available agricultural residues. Most of the generated residues stem from the country’s major crops (sugarcane, cassava, rice and palm), totaling 174.1 million tons per year. The volume of bioethanol from these residues is projected to be 20,213.5 million liters per year, meeting 31.2% of the overall fuel demand of the transport sector. At the regional level, the northeast produces the highest amount of bioethanol at 9099.7 million liters per year, followed by the central, northern and southern regions. In terms of provincial distribution, the highest amount of bioethanol is converted in Nakhon Ratchasima, amounting to 1328 million liters per year. Data from the top ten potential provinces suggest that decentralizing production facilities is possible. One of the hotspots is Surat Thani in the south which can potentially utilize palm residues as feedstocks. This regionalized assessment also found that conventional feedstocks could be substituted with regionally available residues in the 26 production plants currently in operation. The results confirm that there would be enough alternative regional feedstocks to meet existing production capacities and they indicate that there would be enough regional residues left over for future value-added utilization.
Graphic Abstract