Spatial analysis, quantification and evaluation of developments in settlement structure based on topographic geodata

As the global population continues to grow, urbanization is one of the most significant anthropogenic processes linked to ecological change. But even in countries where the overall population is stagnating, migratory movements toward urban centres will continue to place pressure on the finite resource of land. Therefore, it is particularly important to determine and describe the development of settlement areas as precisely as possible in order to inform spatial planning decisions. For this reason, this dissertation presents vector-based methods to analyse, quantify and evaluate small-scale changes in settlement area. In this work, which constitutes a cumulative dissertation, novel methods are described that can be used to determine not only areal change in settlement and traffic areas (SuV), but also the type of building change and urban densification. This is of particular interest for the spatial planning of expanding metropolitan areas, where the question arises: Where, how and to which extent can built-up areas be further densified in order to reduce the consumption of land for new settlement areas? The methods presented here can facilitate spatially detailed analyses and already form the basis for a nationwide monitoring of settlement and open space development. This work shows how geometric deviations and changes in the underlying data model can be taken into account when determining SuV growth from data of the Authoritative Topographic-Cartographic Information System (ATKIS). In this context, positional inaccuracies of linearly and arealy modelled geometries are each treated in a special way so that minor positional offsets no longer affect the SuV increase. In addition, changes in the data model are accommodated by disregarding specific object reallocations when determining the SuV increase. To test these methods, the SuV increase was determined and analysed for Germany using national ATKIS data sets that feature geometric positional inaccuracies and data model changes. It could be shown that a considerable share of the calculated SuV increase is not due to real-world changes but to modelling issues. Furthermore, a novel method for the detection of building changes is presented, which focuses on the differentiation between modified and replaced buildings. It could be shown that this new approach is more accurate than other investigated methods. Furthermore, an algorithm was developed in this work to generate defined location deviations. This could be used to show how position deviations affect the accuracy of the examined procedures. The threshold values determined in this work can form the basis for similar investigations. In addition, an indicator was developed to track changes in building density. This indicator not only reflects the extent of building change but also the size of the existing building stock. Moreover, the indicator was designed in such a way as to allow comparison of the densification of developed and undeveloped areas, and thus also inner and outer urban areas. Furthermore, the indicator can be used to symmetrically calculate a decrease in the building stock, enabling a comparison of densification and de-densification processes.:1. Introduction 1.1 Motivation 1.2 Problem description 1.3 Aims 1.4 Structure 2. Dissertation main articles 2.1 Measuring land take in Germany 2.2 Detecting building change 2.3 Indicator for building densification 3. Methods for measuring settlement changes 3.1 Measuring changes through land use data 3.2 Detection of building changes 3.3 Measuring changes in building density 4. Main findings 4.1 Effects of non-real changes on land take 4.2 Distinguishing building modification and replacement 4.3 Impact of building changes on building density 4.4 How the articles are connected 4.5 Additional relevant publications 5. Conclusion and Outlook References Abbreviations List of figures List of author’s publications Articles Conference Papers Acknowledgments Appendix with publication

History of mathematics in teachers' education: Motivation for and of Discussion Group 2

International audienceDiscussion Group 2 (DG 2), in a sequence of two one-hour sessions, revisits the discussion about the role of history of mathematics in teachers' education – both for pre-service teachers and currently practicing teachers. Activities of DG 2 include a discussion of examples from the literature that propose benefits for teachers and their students when history of mathematics is utilized to teach and learn mathematics. Participants will also share experiences from their own contexts. In particular, DG 2 will draw upon concrete examples from university courses, professional development programs, and projects, and when possible, the observed and/or documented benefits derived from the use of history of mathematics resulting from these examples. Finally, participants will discuss specific tasks or activities that may serve as examples for contexts that do not currently possess a strong history of mathematics dimension within mathematics teacher education programs, or which may provide new examples for those who do.

Análise técnica de visitas a cultivos em tanques-rede em diferentes regiões do Brasil.

TCC (graduação) - Universidade Federal de Santa Catarina, Centro de Ciências Agrárias, Curso de Engenharia de Aquicultura.Grande parte da piscicultura praticada hoje no mundo ocorre em ambientes de água doce. O potencial produtivo brasileiro na aquicultura continental está relacionado principalmente ao amplo volume útil de água doce disponível nos reservatórios espalhados pelo país. Na piscicultura atual o sistema de cultivo que tem apresentando maior evolução e, consequentemente, resultados mais expressivos é o modelo intensivo de cultivo em tanques-rede. Neste contexto, foi desenvolvido um projeto P & D ANEEL pelo Laboratório de Biologia e Cultivo de Peixes de Água Doce (LAPAD – UFSC), financiado pela empresa do setor elétrico Barra Grande Energética S.A (BAESA) intitulado “Avaliação da Viabilidade Sócio-econômica e Ambiental de Cultivo de Peixes em Tanques-rede no Reservatório da UHE Barra Grande”. Este projeto teve como uma das etapas de execução o levantamento de dados referentes aos cultivos de peixes em tanques-rede realizados no Brasil. Desta forma, este trabalho tem como objetivo apresentar uma análise técnica das visitas realizadas nas diferentes regiões referencia no cultivo de peixes em tanques-rede. A primeira visita ocorreu em cultivos realizados no reservatório da Usina Hidrelétrica de Itaipu Binacional, em três áreas aquícolas (AA) licenciadas para o cultivo de peixes em tanques-rede: AA Passo Chue 02, AA Rio Guabiroba e AA Passo Chue 04. Nesta região, o pacu Piaractus mesopotamicus é a espécie cultivada pelos aquicultores, mas outras espécies nativas estão sendo pesquisadas e testadas para o cultivo. A segunda visita foi aos cultivos realizados no complexo hidrelétrico de Paulo Afonso no estado da Bahia, onde foram visitados quatro locais: Associação Jovens Criadores de Peixes, Associações da Malhada Grande 2 e 3, Associação dos Trabalhadores Rurais e a Fazenda Santo Antônio da Glória. A espécie cultivada nesta região é a tilapia Oreochromis sp. da linhagem chitralada. A terceira região visitada foi o noroeste do estado de São Paulo, mais precisamente, aos cultivos realizados nos reservatórios da UHE Nova Avanhandava e UHE Ilha Solteira. No reservatório da UHE Nova Avanhandava os locais visitados estão localizados no entorno dos municípios paulistas de Zacarias e Buritama, os locais visitados no reservatório da UHE Ilha Solteira estão localizados no município paulista de Santa Fé do Sul, sendo que em ambos a espécie cultivada é a tilápia Oreochromis sp da linhagem GIFT. Dentre as regiões visitadas o sudeste do Brasil apresenta uma atividade de piscicultura em tanques-rede mais desenvolvida, local onde é possível afirmar que a cadeia produtiva da tilápia cultivada em tanques-rede está completa. Com relação a região de Paulo Afonso, esta pode ser caracterizada como uma atividade que trabalha preferencialmente na forma de associações. O Paraná esta se desenvolvendo na piscicultura de tanque-rede, tendo como base a criação de espécies nativas, tendo como principal espécie o pacu Piaractus mesopotamicus

Measuring Land Take: Usability of National Topographic Databases as Input for Land Use Change Analysis; A Case Study from Germany

The implementation of sustainable land policies is in need of monitoring methods that go beyond a mere description of the proportion values of land use classes. The annual statistical surface area report on actual land utilization (German: “Bodenfläche nach Art der tatsächlichen Nutzung”), published by the statistical offices of the German federal states and the federation, provides information on a set of pre-defined land use classes for municipalities, districts and federal states. Due to its surveying method of summing up usage information from cadastral registers, it is not possible to determine previous and subsequent usages of land parcels. Hence, it is hard to precisely indicate to what extent particular land use classes contribute to the settlement area increase. Nevertheless, this information is crucial to the understanding of land use change processes, which is needed for a subsequent identification of driving forces. To overcome this lack of information, a method for the spatial and quantitative determination of previous and subsequent land usages has been developed, implemented and tested. It is based on pre-processed land use data for different time slices, which are derived from authoritative geo-topographical base data. The developed method allows for the identification of land use changes considering small geometric shifts and changes in the underlying data model, which can be adaptively excluded from the balance

Knowledge Goals as an Essential Component of Knowledge Management

Knowledge goals are one of the fundamental elements of knowledge management. They should be derived from corporategoals and define objectives for knowledge management in a company. Without the creation, use and verification of thesegoals, effective knowledge management is unthinkable. However, this is usually not well supported by informationtechnology. Holistic systems which can assist all processes in managing knowledge goals are virtually non-existent. In ourproject, we develop such a holistic approach termed Knowledge Valuation Management (KVM) system. In this paper, wepresent some key components of the system together with some examples

Ein Beitrag der Informationstechnik zur strategischen Wissensplanung: Anhang

Hauptband auch im Buchhandel erschienen: Ein Beitrag der Informationstechnik zur strategischen Wissensplanung / Hagen Schorcht Ilmenau : Univ.-Verl. Ilmenau, 2014. - 399 S. (Ilmenauer Schriften zur Wirtschaftsinformatik ; 1) ISBN 978-3-86360-099-0 URN urn:nbn:de:gbv:ilm1-2013000710 Preis (Druckausgabe): 22,50

Arbeitsbericht Nr. 2007-05, November 2007

Ilmenauer Beiträge zur Wirtschaftsinformatik Nr. 2007-05 / Technische Universität Ilmenau, Fakultät für Wirtschaftswissenschaften, Institut für Wirtschaftsinformatik, ISSN 1861-9223 ISBN 978-3-938940-18-