Thiel J.,HafenCity University Hamburg
European Urban and Regional Studies | Year: 2017
The paper addresses the abundant literature on the creative city that has been generated following publication in 2002 of Richard Florida’s work on the creative class. In particular, it is maintained that the discussion should be based more on a robust social economic analysis of urban economies. The paper starts with a brief review of the polarized debate on the creative city in which either the optimist obsession with a new growth sector is stressed or there is a focus of attention on its negative impact on urban society. Building on the idea of cultural production as a reflexive economic activity and on three empirical vignettes about how culture, the economy and the city interact, it argues that cultural production is an adaptable activity which is, however, permanently forced into a state of adaptation. Urban space and society have an ambivalent role here. On the one hand, the city offers adaptability: on the other hand, however, because this is the case, it fosters the need for permanent adaptation. © 2015, © The Author(s) 2015.
Hidalgo M.E.M.,HafenCity University Hamburg
Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) | Year: 2017
Spatial microsimulation models can be used for the analysis of complex systems. In this paper we make use of a spatial microsimulation model for the estimation of heat demand for Germany at a NUTS–3 level. The presented model creates a synthetic building stock by re-weighting the national microdata sample to small areas (NUTS–3) statistics with help of the GREGWT algorithm. Using the GREGWT method we benchmark the microdata sample to three different aggregation units (a) the building level (i.e. number of buildings); (b) families/dwelling units; and (c) individuals. The model takes into account the different climate regions defined on the national German 18599-DIN standard. In order to incorporate the climate data into the model, we make use of a quasi steady-state heat transfer model to compute the heat demand of the individual buildings. These type of models require a building geometry for the estimation of heat demand, in this case we do not have information of the individual building geometry but only about the building size, expressed as square meters. We define synthetic geometrical boxes for the computation of heat demand. The described model is able to represent the national building stock at a microlevel. These type of models are essential for the assessment of policies targeting (a) the reduction of carbon emissions in the construction sector and (b) the increase of energy efficiency on heat distribution grids. © Springer International Publishing AG 2017.
Lesny K.,HafenCity University Hamburg
Geotechnical Special Publication | Year: 2017
The deviation of the predicted behavior of a geotechnical structure for a given design to its real behavior is commonly addressed by the model uncertainty of the applied design method. The model factor approach is the easiest way to express this uncertainty. Herewith, the model factor is defined as the ratio of the design quantity measured in a load test to its predicted value using the design method in question. Databases of well-documented field and laboratory tests are a good tool to quantify model factors. However, the number of load tests, the quality and quantity of information available for each test in the database determine significantly the model factor evaluation. The conditions at the test site such as the scale and geometry of the model or prototype, the soil characteristics, the test performance and the interpretation of the test results are identified to be of special importance for the quality of the database. © 2017 ASCE.
Schiewe J.,HafenCity University Hamburg
Lecture Notes in Geoinformation and Cartography | Year: 2017
Following the general demand for task-orientation in map design, one specific task will be examined here: the preservation and highlighting of local extreme values in choropleth maps. Extreme value polygons are ones that show a larger (local maximum) or smaller (local minimum) attribute value compared to all directly neighboring polygons. For a visual identification in a classified choropleth map, such a polygon must belong to a class other than the surrounding polygons. However, data classification methods that are commonly used in the process of generating choropleth maps are data-driven, i.e., the intervals are determined solely on the basis of the present frequency distribution of the original values. With such a division along the number line, the spatial context of the underlying data is completely neglected and with that the desired categorization for local extreme values is not guaranteed. As a consequence, a new method (called PLEX) is presented for this purpose. The application and the effectiveness of this method will be demonstrated using real-world examples. © Springer International Publishing AG 2017.
Agency: European Commission | Branch: H2020 | Program: IA | Phase: WASTE-6a-2015 | Award Amount: 11.31M | Year: 2016
The overall objective is to minimise the leakage of materials from the linear economy and work towards a circular economy. Specific objectives are to: Engage cities, enterprises, citizens and academia in 16 participatory value chain based partnerships to create and develop eco-innovative solutions together. Develop 10 viable end-markets by demonstrating new applications for plastic waste, metals (EEE devices), biowaste and wood waste. Develop a governance model for cities based on value chain based partnerships. Develop decision support tools and assess the actual impact by use of Big Data. Ensure replication through the FORCE Academy aiming at enterprises, citizens and policy makers. The eco-innovative solutions will be demonstrated across four cities (Copenhagen, Hamburg, Lisbon and Genoa) and using the four materials: Flexible plastics: Recycling and upgrade of 5,000 tonnes of flexible plastic from enterprises and private households will enable virgin material substitution, corresponding to preventing emissions of 12,500 tonnes of CO2. Metals: Citizens will be mobilised to reclaim an additional 2 kg/capita of WEEE (app. 3,600 tonnes). A communication campaign will reach 100,000 citizens and support at least five SMEs that repair damaged EEE devices so that 10-20% of the collected WEEE can be redistributed. Wood waste: additional 12,000 tonnes wood waste from urban and mountain areas will be collected. 8-10,000 tonnes of brushwood will be used for compost production, and 14-16,000 tonnes will be processed into wood particles. Biowaste: around 7,000 tonnes of biowaste from the municipal mixed waste stream will be recovered: 3,000 tonnes coming from restaurants and hotels, and 4,000 tonnes coming from households. The partnerships will result in the creation of viable eco-innovative market solutions, exploited by the partners. Replication in other cities will be incentivised thus ensuring competitiveness of European Circular Economy and green growth.
Agency: European Commission | Branch: H2020 | Program: IA | Phase: SCC-1-2016-2017 | Award Amount: 21.72M | Year: 2016
mySMARTLife project aims at the development of an Urban Transformation Strategy to support cities in the definition of transition models, as a suitable path to reach high level of excellence in its development process, addressing the main city challenges and progressing to the smart people and smart economy concepts. The main instrument to achieve this very ambitious strategy will be the definition of the Advanced Urban Planning, consisting of an integrated approach of the planned city interventions on the basis of a rigorous impact assessment, an active citizen engagement in the decision-making process and a structured business approach, from the city business model perspective, to the economic framework for big companies and local SMEs and Start-Ups. Nantes (France), Hamburg (Germany) and Helsinki (Finland) are the lighthouse cities and Varna (Bulgaria), Bydgoszcz (Poland), Rijeka (Croatia) and Palencia (Spain) the followers. All of them will be involved in the overall project development assuming different and complementary roles. Energy and Climate mitigation plans in the lighthouse cities are completely compliant with the objectives of Covenant of Mayors initiative, as it is reflected; first regarding the early participation of the cities in Covenant of Mayors and second, considering the ambition of their SEAPs, that were submitted, evaluated, approved and are monitored by Covenant of Mayors. Aligned with these objectives, the commitment of the lighthouses is the deployment of a big set of large scale interventions and at least two years of data collection to make a depth analysis of the results, calculating standard KPIs, evaluating the associated impacts and disseminating the results. Followers will be very close to this demonstration, collaborating in the definition and deployment, analysing the problem from the point of view of their own city challenges and extracting knowledge, best practices and lessons learnt for a further replication.
Agency: European Commission | Branch: H2020 | Program: RIA | Phase: WASTE-6b-2015 | Award Amount: 5.09M | Year: 2016
A shift towards a more circular economy is crucial to achieve more sustainable and inclusive growth. Our objective is to provide local and regional authorities with an innovative transdisciplinary open source geodesign decision support environment (GDSE) developed and implemented in living labs in six metropolitan areas. The GDSE allows creating integrated, place-based eco-innovative spatial development strategies aiming at a quantitative reduction of waste flows in the strategic interface of peri-urban areas. These strategies will promote the use of waste as a resource, thus support the on-going initiatives of the EC towards establishing a strong circular economy. The identification of such eco-innovative strategies will be based on the integration of life cycle thinking and geodesign to operationalise urban metabolism. Our approach differs from previous UM as we introduce a reversed material flow accounting to collect data accurate and detailed enough for the design of a variety of solutions to place-based challenges. The developed impact and decision models allow quantification and validation of alternative solution paths and therefore promote sustainable urban development built on near-field synergies between the built and natural environments. This will be achieved by quantifying and tracking essential resource flows, mapping and quantification of negative and positive effects of present and future resource flows, and the determination of a set of indicators to inform decision makers concerning the optimization of (re-)use of resources. The GDSE will be open source. With a budget of 5 million, REPAiR funds a consortium rich in experience in waste and resource management, spatial decision support, territorial governance, spatial planning and urban design, and has deep knowledge of the 6 case study areas. REPAiR is supported by a user board, of key stakeholders for the development of CE as well as local authorities, who are heavily involved in the GDSE testing.
Stephenson U.M.,HafenCity University Hamburg
Acta Acustica united with Acustica | Year: 2010
In room acoustics as well as in noise immission prognosis, ray tracing methods are efficient and widely used. Nevertheless, as is well recognised, these energetic methods assuming incoherent superposition fail when diffraction becomes important. The aim is to solve this main deficiency, but the energetic model shall be retained. However, since random emitted particles never pass edges exactly, analytical edge diffraction approaches may not be applied. These and other general problems of combining diffractions with the numerical methods of geometrical room acoustics are discussed in the first part of the paper. To introduce diffraction but preserve the algorithmic advantage of ray tracing, the author had proposed a sound particle diffraction model based on Heisenbergs uncertainty relation (UR) introducing the concept of a 'diffraction angle probability' and an 'edge diffraction strength' (the closer the by-pass-distance the stronger the diffraction effect'). This model, already presented in 1986, demonstrated very good agreements with the expected transfer functions of the basic reference cases of a half-infinite screen and a slit in far field. It has now for the first time been embedded in a full ray tracing program enabling also finite source and receiver distances. The results have also been compared with the exact wave-theoretical results of Svenssonts secondary edge source model. For most cases of the screen and the slit the agreements are very good (less than 1 dB). Also - not self evident - the reciprocity principle seems fulfilled. Exploiting the UR seems to be a useful approach not only for light - as has been published in the field of optical ray tracing - but also for sound. However, whether the method works also with higher order diffraction and with other structures has not yet been investigated for sound. A very difficult practical problem remains the explosion of computing time which may be solved by the re-unification -algorithm provided by Quantized Pyramidal Beam Tracing. © S. Hirzel Verlag.
Kinkeldey C.,HafenCity University Hamburg
International Journal of Geographical Information Science | Year: 2014
Analyses of spatiotemporal data are affected by different kinds of uncertainty, and various studies have shown that their impact can be severe. This is especially true for land cover change analysis based on remotely sensed data – it has been shown that ignoring uncertainty can lead to unreliable results. Approaches are needed that incorporate information on uncertainty into the analysis. However, usable models and methods are still rare and the supposed positive effect of uncertainty information has not been extensively studied. In this contribution, we describe the development of ICchange, an interactive visual prototype for the exploratory analysis of land cover change following a geovisual analytics approach. Apart from serving as proof of concept, the prototype will be used to evaluate the role of uncertainty information during change analyses. We conducted a qualitative evaluation of the prototype using low-level tasks to test basic usability. The input from the study is used to improve the design. A special focus is placed on the visual representation of uncertainty in one of the views that did not perform satisfyingly. The prototype presented here will be used in future studies to evaluate the role of uncertainty in real-world change analysis. © 2014, © 2014 Taylor & Francis.
Poplin A.,HafenCity University Hamburg
Computers, Environment and Urban Systems | Year: 2012
The aim of this paper is to study the implementation of online games to encourage public participation in urban planning. Its theoretical foundations are based on previous work in public participatory geographical information systems (PP GISs), play and games, with a special focus on serious games. Serious games aim to support learning processes in a new, more playful way. We developed the concept of playful public participation in urban planning, including playful elements such as storytelling, walking and moving, sketching, drawing, and games. A group of students designed an online serious public participatory game entitled NextCampus. The case study used in NextCampus was taken from the real-world question of a possible move of a university campus to a new location in the city of Hamburg, Germany. The development of the serious public participatory game NextCampus resulted in a physical prototype, user interface design, and a computational model of the game. The NextCampus game was tested with the help of two groups of urban planning students and presented to three external experts who provided valuable recommendations for further development. The critical comments questioned the level of complexity involved in such games. The positive comments included recognition of the potential for joy and the playfulness a game like NextCampus could evoke. © 2011 Elsevier Ltd.