Geometry to Build Models, Models to Visualize Geometry

In the seventeenth century, Guarino Guarini, mathematician and architect, affirmed that architecture, a discipline that primarily deals with measures, relies on geometry: therefore, the architect needs to know at least its basic principles. On behalf of Guarini’s words, we designed a set of interdisciplinary teaching experiences, between mathematics (via a calculus course) and drawing (via our Architectural Drawing and Survey Laboratory courses) that we proposed to first-year under graduate students studying for an Architecture degree. The tasks concern mathematical and representational issues about vaulted roofing systems and are based on the use of physical models in conjunction with digital tools, in order to make the cognitive geometric process more effective, thus following a consolidated tradition of both disciplines

Two-dimensional unsteady flow visualization by animating evenly-spaced streamlets

Flow visualization has been widely used to display and discover patterns and features in vector fields. Common applications include the representation of ocean currents and weather model data. In this thesis, a flexible method for animating vector fields is developed, based on a generalization of a Poisson disc sampling method. The algorithm has two stages; in the first streamlets are drawn into an image buffer, larger than their intended size. Before they are drawn they are tested to see if they impact on already drawn areas; if they do, they are rejected. In the second stage the ones that pass the test are drawn normal size. The concept of a 3D streamlet object, which groups consecutive time step streamlets as a primitive rendering object, is introduced as part of a method for animating streamlets so that they have minimal overlap and show frame-to-frame coherence providing visual continuity when animating time varying vector fields. Acceptance schemes that allow for occasional overlap between streamlets are explored and found to improve both the speed and the overall quality. Both model data and real weather data are used to evaluate the method. The results show that the method produces good results and is flexible, allows for variable size and density of streamlets, and produces good results

Architectural rendering and 3D visualization

The following thesis, “Architectural Render and 3D Visualization,” describes the process of creating, rendering, and optimizing an Interior Design using a 3D Engine as the principal tool. The tool used during the development is “Unreal Engine,” which allows rendering and interaction in real-time with the scene. At the end of the process, we can obtain an interactive scene rendered with highquality materials trying to reach a realistic real-time scene by mixing modeling, texturing, and illumination techniques. Furthermore, scripting is contemplated in the project scope, looking to optimize the environment where we will be developing the scene, and developing some tools

ICS Materials. Towards a re-Interpretation of material qualities through interactive, connected, and smart materials.

The domain of materials for design is changing under the influence of an increased technological advancement, miniaturization and democratization. Materials are becoming connected, augmented, computational, interactive, active, responsive, and dynamic. These are ICS Materials, an acronym that stands for Interactive, Connected and Smart. While labs around the world are experimenting with these new materials, there is the need to reflect on their potentials and impact on design. This paper is a first step in this direction: to interpret and describe the qualities of ICS materials, considering their experiential pattern, their expressive sensorial dimension, and their aesthetic of interaction. Through case studies, we analyse and classify these emerging ICS Materials and identified common characteristics, and challenges, e.g. the ability to change over time or their programmability by the designers and users. On that basis, we argue there is the need to reframe and redesign existing models to describe ICS materials, making their qualities emerge

From Raw Data to Meaningful Information: A Representational Approach to Cadastral Databases in Relation to Urban Planning

Digesting the data hose that cities are constantly producing is complex; data is usually structured with different criteria, which makes comparative analysis of multiple cities challenging. However, the publicly available data from the Spanish cadaster contains urban information in a documented format with common semantics for the whole territory, which makes these analyses possible. This paper uses the information about the 3D geometry of buildings, their use and their year of construction, stored in cadastral databases, to study the relation between the built environment (what the city is) and the urban plan (what the city wants to become), translating the concepts of the cadastral data into the semantics of the urban plan. Different representation techniques to better understand the city from the pedestrians’ point of view and to communicate this information more effectively are also discussed.Postprint (published version

Restoration: Bridging the Gaps A Graphic Translation of Ecological Restoration

The terms restoration ecology and ecological restoration are used interchangeably confusing the definition and work of ecological restoration and its many components. Restoration ecology is a type of scientific practice whose work will be a component of a restoration project while ecological restoration is the sum of practices, social, historical and ecological that constitute the field of restoration (Higgs, 2005). Within our rapidly urbanizing society the role of ecological restoration and restoring ecosystem services is increasingly important, especially within our coastal cities. The goals of restoration differ when the classification of restoration techniques is by ecosystem service, not ecological function, framing restoration around people’s use of the ecosystem, not the ecosystems needs. The problems faced in restoration work affect social, historical and ecological aspects that reach beyond the physical and political boundaries of the restoration site. Ecological restorationists need to understand the differences in framing that a non-universal definition for ecological restoration creates, while also understanding how to bridge these differences. One solution is graphic communication and representation of the different components that scientists and non-scientists alike can understand. This study uses restoration project plans to illustrate the goals within projects, and shows where the goals of scientists and designers conflict and harmonize. Shown through map overlays and graphics, this comparison provides professionals within the field, with resources and illustrations to better communicate. In addition, graphics and matrices will illustrate key terms, concepts and the intersection of restoration types with habitat types, ecosystem services and social components. In conclusion, this study addresses differences in ways of learning, and kinds of knowledge other than science needed in ecological restoration projects, and uses graphics to bridge these gaps

Bluefish: A Relational Framework for Graphic Representations

Complex graphic representations -- such as annotated visualizations, molecular structure diagrams, or Euclidean geometry -- convey information through overlapping perceptual relations. To author such representations, users are forced to use rigid, purpose-built tools with limited flexibility and expressiveness. User interface (UI) frameworks provide only limited relief as their tree-based models are a poor fit for expressing overlaps. We present Bluefish, a diagramming framework that extends UI architectures to support overlapping perceptual relations. Bluefish graphics are instantiated as relational scenegraphs: hierarchical data structures augmented with adjacency relations. Authors specify these relations with scoped references to components found elsewhere in the scenegraph. For layout, Bluefish lazily materializes necessary coordinate transformations. We demonstrate that Bluefish enables authoring graphic representations across a diverse range of domains while preserving the compositional and abstractional affordances of traditional UI frameworks. Moreover, we show how relational scenegraphs capture previously latent semantics that can later be retargeted (e.g., for screen reader accessibility).Comment: 27 pages, 14 figure

Economics for the Masses : The Visual Display of Economic Knoledge in the United Staes (1921-1945)

The rise of visual representation in economics textbooks after WWII is one of the main features of contemporary economics. In this paper, we argue that this development has been preceded by a no less significant rise of visual representation in the larger literature devoted to social and scientific issues, including economic textbooks for non-economists as well as newspapers and magazines. During the interwar era, editors, propagandists and social scientists altogether encouraged the use of visual language as the main vehicle to spread information and opinions about the economy to a larger audience. These new ways of visualizing social facts, which most notably helped shape the understanding of economic issues by various audiences during the years of the Great Depression, were also conceived by their inventors as alternative ways of practicing economics: in opposition to the abstraction of “neoclassical” economics, these authors wanted to use visual representation as a way to emphasize the human character of the discipline and did not accept the strict distinction between the creation and the diffusion of economic knowledge. We explore different yet related aspects of these developments by studying the use of visual language in economics textbooks intended for non-specialists, in periodicals such as the Survey, a monthly magazine intended for an audience of social workers, the Americanization of Otto Neurath's pictorial statistics and finally the use of those visual representations by various state departments and administrations under Roosevelt's legislature (including the much-commented Historical Section of the Farm Security Administration). We show how visualizations that have been created in opposition to neoclassical economics have lost most of their theoretical content when used widely for policy purposes while being simultaneously integrated into the larger American culture. It is our claim that those issues, which are familiar to those involved in cultural and visual studies, are also of crucial importance to apprehend the later developments of modern economics.Visualization, economocs, American Economy, Otto Neurath, Rexford Tugwell, Roosevelt, Roy Stryker, Photographs, Pictorial Statistics