scholarly journals Research and Application of the 3D Model of Beijing in Urban Planning Based on Oblique Photogrammetry

2021 ◽  
Author(s):  
Yanzhi Sun ◽  
Xi Wei ◽  
Tongsheng Zhang
Keyword(s):  
Urban Planning ◽  
High Precision ◽  
Urban Governance ◽  
3D Model ◽  
Smart Cities ◽  
Accuracy Assessment ◽  
Basic Data ◽  
Model Data ◽  
Aerial Photogrammetry ◽  
Verification Methods

In recent years, with the accelerated development of the urbanization and the continuous emergence of the smart cities, the new requirements and the challenges have been raised for the urban governance and the urban planning. Based on the oblique aerial photogrammetry technology and the 3D automatic modelling technology, this study constructs the high-precision basic data of the 3D urban model of Beijing and verifies the 3D model’s precision comprehensively by using two verification methods: the point accuracy assessment and the plane accuracy assessment. And then, using the validated 3D model data and taking the demolition of the illegal buildings in urban planning as an example, an application of the 3D model is studied in the simulated environmental scenes of the urban planning, which also provides a reference for the development of the smart cities in the future.

scholarly journals City intelligence for enhancing urban performance value: a conceptual study on data decomposition in smart cities

2021 ◽  
Vol 5 (1) ◽  
pp. 191-222
Author(s):  
Karima Kourtit
Keyword(s):  
Urban Planning ◽  
Urban Policy ◽  
Urban Governance ◽  
Smart Cities ◽  
Urban System ◽  
Current Data ◽  
Urban Life ◽  
Data Decomposition ◽  
Blowing Up ◽  
Technology Age

AbstractThe contemporary ‘digital age’ prompts the need for a re-assessment of urban planning principles and practices. Against the background of current data-rich urban planning, this study seeks to address the question whether an appropriate methodological underpinning can be provided for smart city governance based on a data-driven planning perspective. It posits that the current digital technology age has a drastic impact on city strategies and calls for a multi-faceted perspective on future urban development, termed here the ‘XXQ-principle’ (which seeks to attain the highest possible level of quality for urban life). Heterogeneity in urban objectives and data embodied in the XXQ-principle can be systematically addressed by a process of data decomposition (based on a ‘cascade principle’), so that first, higher-level urban policy domains are equipped with the necessary (‘big’) data provisions, followed by lower-ranking urban governance levels. The conceptual decomposition principle can then be translated into a comprehensive hierarchical model architecture for urban intelligence based on the ‘flying disc’ model, including key performance indicators (KPIs). This new model maps out the socio-economic arena of a complex urban system according to the above cascade system. The design of this urban system architecture and the complex mutual connections between its subsystems is based on the ‘blowing-up’ principle that originates from a methodological deconstruction-reconstruction paradigm in the social sciences. The paper advocates the systematic application of this principle to enhance the performance of smart cities, called the XXQ performance value. This study is not empirical, although it is inspired by a wealth of previous empirical research. It aims to advance conceptual and methodological thinking on principles of smart urban planning.

scholarly journals When Alphabet Inc. Plans Toronto’s Waterfront: New Post-Political Modes of Urban Governance

2020 ◽  
Vol 5 (1) ◽  
pp. 69-83 ◽  
Author(s):  
Constance Carr ◽  
Markus Hesse
Keyword(s):  
Land Use ◽  
Urban Planning ◽  
Urban Governance ◽  
Smart Cities ◽  
The Political ◽  
Secondary Sources ◽  
Civic Discourse ◽  
Public Meetings ◽  
Land Use Development ◽  
Political Economic

‘Smart cities’ has become a hegemonic concept in urban discourses, despite substantial criticism presented by scholarly research and activism. The aim of this research was to understand what happens when one of the big digital corporations enters the field of real estate and land use development and urban planning, how existing institutions respond to this, and how modes of urban governance are affected. Alphabet Inc.’s plans for Toronto’s waterfront provided insights into these questions. Our investigations traced a complex web of place-making practices that involved all levels of government, the general public, and networks of actors throughout the private sector. Methodologically, the discourse was reconstructed with local fieldwork, interviews with key actors, participating in tours and public meetings, and secondary sources. It was found that Alphabet Inc.’s plan to build a world-class digital city contained some lessons for urban studies and urban planning practice. First, Alphabet Inc.’s plans, which unfolded amidst initiatives to expand the knowledge economy, confirmed concerns that the trajectory of neoliberal, market-driven land use and speculation along the waterfront remains unchanged. Second, digital infrastructures are potentially a Trojan Horse. Third, it was seen that municipalities and their modes of urban planning are vulnerable to the political economic manoeuvrings of large corporate power. Fourth, Alphabet Inc. operates as a post-political package driven by a new coalition of politics, where the smart city is sold as a neutral technology. The controversies surrounding the project, however, stirred a civic discourse that might signal a return of the political.

scholarly journals The model of direct relative orientation with seven constraints for geological landslides measurement and 3D reconstruction

2016 ◽  
Vol 20 (4) ◽  
pp. 1
Author(s):  
Yifu Chen ◽  
Zhong Xie ◽  
Zhenge Qiu ◽  
Min Zhang ◽  
Saishang Zhong
Keyword(s):  
3D Reconstruction ◽  
High Precision ◽  
3D Model ◽  
Accuracy Assessment ◽  
Relative Orientation ◽  
Model Reconstruction ◽  
Orientation Model ◽  
3D Model Reconstruction ◽  
Least Squares Adjustment ◽  
The Impact

With the development of computer vision and high-precision 3D model reconstruction, used for the measurement and 3D reconstruction of the geological landslides, acquiring a high-precision relative orientation basing multiple images is crucial and the key point to ensuring and improving the accuracy of 3D model and space position. Currently, the conventional relative orientation model includes five independent parameters. For the linear relative orientation model, there are nine parameters to construct the linear space geometric relationship between the imaging and space point. To eliminate the impact of more parameterization and improve the accuracy and stability of solved parameters for the conventional direct relative orientation model, a new relative orientation model with seven constraints is proposed and validated in this paper. The additional constraints are derived from the orthogonal property of the rotation matrix of a stereo imaging pair and associated with the least squares adjustment to obtain a high-precision result of the relative orientation. Through the accuracy assessment using space position, it is revealed that the new proposed model is more advantage for the conventional type of direct relative orientation, especially at 3D model reconstruction and close range photogrammetric and applications for the geological landslides measurement. El modelo de orientación relativa directa con siete restricciones para la medida de deslizamientos de tierra y reconstrucción tridimensional ResumenCon el desarrollo del entorno computacional y la alta precisión del modelo de reconstrucción tridimensional, utilizados para la medida y reconstrucción de desprendimientos geológicos, es crucial la obtención de la orientación relativa de alta precisión basada en imágenes múltiples y es el punto clave para asegurar y mejorar la exactitud del modelo 3D y la posición espacial. Actualmente el modelo de orientación relativa incluye cinco parámetros independientes. En el modelo linear de orientación relativa hay nueve parámetros para construir la relación geométrica espacial linear entre el sondeo y la posición espacial. Para eliminar el impacto de más parametrización y mejorar la exactitud y la estabilidad de los parámetros resueltos el modelo de orientación relativa convencional, este artículo propone y valida un nuevo modelo de orientación relativa con siete restricciones. Las restricciones adicionales se derivan de la propiedad ortogonal de la matriz de rotación de la imagen estéreo y se asocian con el ajuste de los cuadrados mínimos para obtener un resultado de alta precisión de la orientación relativa. Al medir la exactitud con la posición espacial se revela que el nuevo modelo propuesto tiene más ventajas que aquel de orientación relativa directa, especialmente en el modelo de reconstrucción 3D y en las aplicaciones fotográmetricas de rango cercano para la evaluación de desprendimientos geológicos.

scholarly journals The Role of Biophilic Agents in Building a Green Resilient City; the Case of Birmingham, UK

2021 ◽  
Vol 13 (9) ◽  
pp. 5033
Author(s):  
Linda Novosadová ◽  
Wim van der Knaap
Keyword(s):  
Urban Planning ◽  
Urban Governance ◽  
Small Scale ◽  
Climate Resilience ◽  
Natural Land ◽  
Negative Impacts ◽  
Community Projects ◽  
Business As Usual ◽  
The City

The present research offers an exploration into the biophilic approach and the role of its agents in urban planning in questions of building a green, resilient urban environment. Biophilia, the innate need of humans to connect with nature, coined by Edgar O. Wilson in 1984, is a concept that has been used in urban governance through institutions, agents’ behaviours, activities and systems to make the environment nature-inclusive. Therefore, it leads to green, resilient environments and to making cities more sustainable. Due to an increasing population, space within and around cities keeps on being urbanised, replacing natural land cover with concrete surfaces. These changes to land use influence and stress the environment, its components, and consequently impact the overall resilience of the space. To understand the interactions and address the adverse impacts these changes might have, it is necessary to identify and define the environment’s components: the institutions, systems, and agents. This paper exemplifies the biophilic approach through a case study in the city of Birmingham, United Kingdom and its biophilic agents. Using the categorisation of agents, the data obtained through in-situ interviews with local professionals provided details on the agent fabric and their dynamics with the other two environments’ components within the climate resilience framework. The qualitative analysis demonstrates the ways biophilic agents act upon and interact within the environment in the realm of urban planning and influence building a climate-resilient city. Their activities range from small-scale community projects for improving their neighbourhood to public administration programs focusing on regenerating and regreening the city. From individuals advocating for and educating on biophilic approach, to private organisations challenging the business-as-usual regulations, it appeared that in Birmingham the biophilic approach has found its representatives in every agent category. Overall, the activities they perform in the environment define their role in building resilience. Nonetheless, the role of biophilic agents appears to be one of the major challengers to the urban design’s status quo and the business-as-usual of urban governance. Researching the environment, focused on agents and their behaviour and activities based on nature as inspiration in addressing climate change on a city level, is an opposite approach to searching and addressing the negative impacts of human activity on the environment. This focus can provide visibility of the local human activities that enhance resilience, while these are becoming a valuable input to city governance and planning, with the potential of scaling it up to other cities and on to regional, national, and global levels.

Dynamics Analysis of Refrigeration Compressor Based on Finite Element and Experimental Modes

2012 ◽  
Vol 499 ◽  
pp. 238-242
Author(s):  
Li Zhang ◽  
Hong Wu ◽  
Yan Jue Gong ◽  
Shuo Zhang
Keyword(s):  
Finite Element ◽  
Dynamic Response ◽  
Modal Analysis ◽  
Natural Frequency ◽  
High Precision ◽  
3D Model ◽  
Finite Element Models ◽  
Dynamics Analysis ◽  
Response Characteristics ◽  
Dynamic Response Characteristics

Based on the 3D model of refrigeration's compressor by Pro/E software, the analyses of theoretical and experimental mode are carried out in this paper. The results show that the finite element models of compressor have high precision dynamic response characteristics and the natural frequency of the compressor, based on experimental modal analysis, can be accurately obtained, which will contribute to further dynamic designs of mechanical structures.

scholarly journals Formation of “Urban planning” indicators for “Smart City” concept (on the example of SKOLKOVO, Moscow)

2018 ◽  
Vol 170 ◽  
pp. 02021
Author(s):  
Olga Chudiniva ◽  
Marina Afonina
Keyword(s):  
Urban Planning ◽  
Smart City ◽  
Smart Cities ◽  
Objective Assessment ◽  
General System ◽  
Transport Infrastructure ◽  
University Of Technology ◽  
Institute Of Technology ◽  
State Of The Environment ◽  
Comprehensive Study

The development of “Smart Cities” is associated with a comprehensive study of the General system of settlement. The aim of the study is to use the system of indicators for the objective assessment of territories, as well as determining the effect of each part in the overall assessment of the functioning of the «Smart City». The leading method of research is a comparative analysis of international rankings, surveys of experts and a comprehensive study of indicators. The article analyzes the papers of specialists working in the field of research «Smart Cities» and technologies: Mueller, Battarra, Srivastava, Dolgikh etc. The basis for this work were the studies by authoritative rating organizations such as IESE Business School University of Navarra, Vienna University of Technology and Research Institute of technology and communications (NIITC, Russia) which allowed to generalize the available research from the perspective of sustainable development and use them on a concrete example.The authors have adapted the existing groups of indicators in relation to the SKOLKOVO innovation city, Russia. The applied system is represented by 7 groups and 23 indicators, which allow to present the planning aspect of the current urban planning structure with its impact on human capital, transport infrastructure, social cohesion, the state of the environment, etc. The work lets confirm the influence of the selected indicators on the development of SKOLKOVO (Russia) and use the obtained data for the rating of “Smart Cities” adapted for Russia. The materials of the article can be extremely useful in the designing of concepts for the development of territories focused on the use of smart solutions in order to minimize costs in the implementation of new solutions.

scholarly journals Whose Health in Whose City? A Systems Thinking Approach to Support and Evaluate Plans, Policies, and Strategies for Lasting Urban Health

2021 ◽  
Vol 13 (21) ◽  
pp. 12225
Author(s):  
Silvio Cristiano ◽  
Samuele Zilio
Keyword(s):  
Public Health ◽  
Urban Planning ◽  
Systems Thinking ◽  
Urban Health ◽  
Urban Governance ◽  
Well Being ◽  
World Health ◽  
Urban Systems ◽  
Health Issues ◽  
The Impact

An increasing interest has been present in scientific literature and policy making for the links between urban environments and health, as also learnt from the COVID-19 pandemic. Collaboration between urban planning and public health is therefore critical for enhancing the capabilities of a city to promote the well-being of its people. However, what leverage potential for urban health can be found in existing plans, policies, and strategies that address urban health? Starting from the relationship between urban systems and health issues, the purpose of this contribution is to broaden the systemic knowledge of urban systems and health so as to try to figure out the impact potential of local urban governance on public health. Considering the systemic nature of health issues, as defined by the World Health Organisation, this is done through a systems thinking epistemological approach. Urban health proposals are studied and assessed in four European cities (Copenhagen, London, Berlin, and Vienna). Current criticalities are found, starting from the guiding goal of such proposals, yet a systemic approach is suggested aimed at supporting and evaluating lasting and healthy urban planning and management strategies.

scholarly journals Actually existing smart citizens: expertise and (non)participation in the making of the smart city

2018 ◽  
Author(s):  
Taylor Shelton ◽  
Thomas Lodato
Keyword(s):  
Smart City ◽  
Policy Making ◽  
Urban Governance ◽  
Smart Cities ◽  
Top Down ◽  
The World ◽  
Number Of Individuals

In response to the mounting criticism of emerging ‘smart cities’ strategies around the world, a number of individuals and institutions have attempted to pivot from discussions of smart cities towards a focus on ‘smart citizens’. While the smart citizen is most often seen as a kind of foil for those more stereotypically top-down, neoliberal, and repressive visions of the smart city that have been widely critiqued within the literature, this paper argues for an attention to the ‘actually existing smart citizen’, which plays a much messier and more ambivalent role in practice. This paper proposes the dual figures of ‘the general citizen’ and ‘the absent citizen’ as a heuristic for thinking about how the lines of inclusion and exclusion are drawn for citizens, both discursively and materially, in the actual making of the smart city. These figures are meant to highlight how the universal and unspecified figure of ‘the citizen’ is discursively deployed to justify smart city policies, while at the same time, actual citizens remain largely excluded from such decision and policy-making processes. Using a case study of Atlanta, Georgia and its ongoing smart cities initiatives, we argue that while the participation of citizens is crucial to any truly democratic mode of urban governance, the emerging discourse around the promise of smart citizenship fails to capture the realities of how citizens are actually discussed and enrolled in the making of these policies.

scholarly journals VERIFICATION OF POTENCY OF AERIAL DIGITAL OBLIQUE CAMERAS FOR AERIAL PHOTOGRAMMETRY IN JAPAN

2016 ◽  
Vol XLI-B1 ◽  
pp. 63-68 ◽  
Author(s):  
Ryuji Nakada ◽  
Masanori Takigawa ◽  
Tomowo Ohga ◽  
Noritsuna Fujii
Keyword(s):  
3D Model ◽  
3D Models ◽  
Aerial Photographs ◽  
Digital Cameras ◽  
Digital Mapping ◽  
Aerial Photogrammetry ◽  
Public Survey ◽  
Survey Accuracy ◽  
Left And Right ◽  
Simultaneous Adjustment

Digital oblique aerial camera (hereinafter called “oblique cameras”) is an assembly of medium format digital cameras capable of shooting digital aerial photographs in five directions i.e. nadir view and oblique views (forward and backward, left and right views) simultaneously and it is used for shooting digital aerial photographs efficiently for generating 3D models in a wide area. <br><br> For aerial photogrammetry of public survey in Japan, it is required to use large format cameras, like DMC and UltraCam series, to ensure aerial photogrammetric accuracy. <br><br> Although oblique cameras are intended to generate 3D models, digital aerial photographs in 5 directions taken with them should not be limited to 3D model production but they may also be allowed for digital mapping and photomaps of required public survey accuracy in Japan. <br><br> In order to verify the potency of using oblique cameras for aerial photogrammetry (simultaneous adjustment, digital mapping and photomaps), (1) a viewer was developed to interpret digital aerial photographs taken with oblique cameras, (2) digital aerial photographs were shot with an oblique camera owned by us, a Penta DigiCAM of IGI mbH, and (3) accuracy of 3D measurements was verified.

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