Refine
Document Type
- Conference Proceeding (132)
- Doctoral Thesis (15)
- Article (7)
- Master's Thesis (7)
- Report (4)
- Diploma Thesis (3)
- Preprint (3)
- Book (1)
- Part of a Book (1)
Institute
- In Zusammenarbeit mit der Bauhaus-Universität Weimar (93)
- Institut für Strukturmechanik (ISM) (16)
- Professur Baubetrieb und Bauverfahren (10)
- Professur Angewandte Mathematik (6)
- Institut für Europäische Urbanistik (5)
- Junior-Professur Augmented Reality (5)
- Professur Stahlbau (5)
- Institut für Konstruktiven Ingenieurbau (IKI) (4)
- Professur Informatik in der Architektur (4)
- Professur Computergestütztes kooperatives Arbeiten (3)
Keywords
- Architektur <Informatik> (125)
- CAD (125)
- Computerunterstütztes Verfahren (124)
- Baubetriebslehre (8)
- Nachtragsvereinbarung (8)
- Prozessmanagement (8)
- Weimar / Bauhaus-Universität / Professur Baubetrieb und Bauverfahren (8)
- Angewandte Mathematik (5)
- Strukturmechanik (5)
- CGI <Computergraphik> (4)
- Angewandte Informatik (3)
- Maschinelles Sehen (3)
- Association for Computing Machinery / Special Interest Group on Graphics (2)
- Bauablauf (2)
- Bildbasiertes Rendering (2)
- China (2)
- Erweiterte Realität <Informatik> (2)
- Finite-Elemente-Methode (2)
- MAG-Schweißen (2)
- Modellierung (2)
- Projektionsverfahren (2)
- Ubiquitous Computing (2)
- Virtuelle Realität (2)
- projector-camera systems (2)
- Abbinderegler (1)
- Abfälle (1)
- Alkalisulfate (1)
- Analyse (1)
- Architectural Theory (1)
- Architekturtheorie (1)
- Arthur (1)
- Augmented reality (1)
- Augmented studio (1)
- Aussagenlogik (1)
- Awareness (1)
- B-Spline (1)
- B-Spline Finite Elemente (1)
- B-spline (1)
- BIM (1)
- Bauphysik (1)
- Bausoll (1)
- Bauteil (1)
- Bearbeitung von Ingenieuraufgaben (1)
- Beteiligung (1)
- Betonverflüssiger (1)
- Bildkorrektur (1)
- Bodenaggressivität (1)
- Building Information Model (1)
- Bäderwesen (1)
- C-S-H Phasen (1)
- C-S-H phases (1)
- Cognition (1)
- Complex Systems (1)
- Computer-Supported Cooperative Work (1)
- Construction Product data (1)
- Content Management (1)
- Datenmodell (1)
- Design Science (1)
- Direkte numerische Simulation (1)
- Display (1)
- Drehrohr (1)
- Duplex-Stahl (1)
- Duplexstahl (1)
- Dynamische Analyse (1)
- Dörfer (1)
- Editor (1)
- Effizienzmessung (1)
- Eigenspannung (1)
- Elastomerlager (1)
- Epistemology (1)
- Erkenntnistheorie (1)
- Ersatzbrennstoffe (1)
- FVK (1)
- Fernsehproduktion (1)
- Festigkeit (1)
- Festkörpermechanik (1)
- Film (1)
- Fließmittel (1)
- Fließverhalten (1)
- Frankreich (1)
- Gebäudesimulation ESP-r (1)
- Gefügeumwandlung (1)
- Gegenständliches Modell (1)
- Gilles Deleuze (1)
- Globalisierung (1)
- Glocke (1)
- Glockenläuten (1)
- Gruppengewahrsein (1)
- Heuristik (1)
- Hochwasserschutz (1)
- Homogenisieren (1)
- Homogenisierung (1)
- Hydratation (1)
- Hydraulik (1)
- Hydrologische Messung (1)
- IFC (1)
- Immobilienmarkt (1)
- Informationsmodell (1)
- Instandhaltungsplanung (1)
- Inverse Light Transport (1)
- Jim Jarmusch (1)
- Kalkulation (1)
- Kognitive Komplexität (1)
- Komplexität (1)
- Konfiguration (1)
- Korrosionsgeschwindigkeit (1)
- Korrosionsprüfung (1)
- Kräfte und Bewegungen (1)
- Kunststoff (1)
- Kunststoff-Metall-Verbund (1)
- Kunststoffbauteil (1)
- Kunststoffbauten (1)
- Kunststoffherstellung (1)
- Kunststoffhäuser (1)
- Kunststoffindustrie (1)
- Kunststofftechnik (1)
- LEG (1)
- Landesentwicklungsgesellschaft (1)
- Latentwärmespeicher (1)
- Licht Transport (1)
- Lösungsverfahren (1)
- Maintenance (1)
- Maschine (1)
- Massivbrücke (1)
- Mathematisches Modell (1)
- Megastadt (1)
- Mehrgitterverfahren (1)
- Metallographie (1)
- Mikrostruktur (1)
- Mobilität (1)
- Modellbildung (1)
- Modelltechnik (1)
- Modelluntersuchung (1)
- Monitoring (1)
- Monitoring Bericht (1)
- Multi-Projektor Systeme (1)
- MySQL (1)
- Netzwerkwissenschaften (1)
- Numerische Mathematik (1)
- Nutzungsdauer (1)
- Nutzungsänderung (1)
- OPL (1)
- Opimization (1)
- Optimierung (1)
- PCM-Putz (1)
- PCM-plaster (1)
- PHP (1)
- PPP (1)
- Periodendauer (1)
- Pfeiler (1)
- Phasenübergangsmaterialien (1)
- Philosophie (1)
- Physikalisches Modell (1)
- Plausibilität (1)
- Privatsphaere (1)
- Produktinformation (1)
- Prognosemodell (1)
- Projector-Camera Systems (1)
- Projekor-Kamera System (1)
- Projektion (1)
- Projektion <Optik> (1)
- Projektionssystem (1)
- Projektor-Kamera Systeme (1)
- Public Private Partnership (1)
- Pyrolyse (1)
- RDA (1)
- RDF (1)
- Radiometric Compensation (1)
- Radiometrische Kompensation (1)
- Recycling (1)
- Rendering (1)
- Resttragfähigkeit (1)
- Revitalization (1)
- Reziprozitaet (1)
- Rohrleitung (1)
- Scale-Up (1)
- Schweißprozesssimulation (1)
- Schwimmbad (1)
- Schwingungsanregung (1)
- Schwingungsdämpfung (1)
- Schwingungstilger (1)
- Schwingungsverhalten (1)
- Schädigung (1)
- Sensor-Based Infrastructure (1)
- Sensor-basierte Infrastrukture (1)
- Service-Oriented Platform (1)
- Service-orientierte Plattform (1)
- Stadtentwicklung (1)
- Stadtforschung (1)
- Stadtplanung (1)
- Stahlbau (1)
- Stochastik (1)
- Strategic Development (1)
- Strategische Planung (1)
- Strategische Projekte (1)
- Strömungsmesstechnik (1)
- Studiotechnik (1)
- Stuttgart / Sonderforschungsbereich Rechnergestützte Modellierung und Simulation zur Analyse (1)
- Städtebau (1)
- Systemtheorie (1)
- Technik / Geschichte (1)
- Temperaturfeld (1)
- Tragkonstruktion (1)
- Tragwerk (1)
- Tragwerke (1)
- Transformation (1)
- Tsingtau (1)
- Umbau (1)
- Umnutzung (1)
- Urbanisierung (1)
- Urbanistik (1)
- Visuelle Wahrnehmung (1)
- Warschau (1)
- Wasserstandmessung (1)
- Wasserversorgung (1)
- Waste (1)
- Weimar / Sonderforschungsbereich Werkstoffe und Konstruktionen für die Revitalisierung von Bauwerken (1)
- Wiederholung (1)
- Winkelverzug (1)
- Wissenschaft / Geschichte (1)
- Wissenschaftsphilosophie (1)
- Wohnhäuser in Stahlbauweise (1)
- Wohnungsbau (1)
- Wohnungsmarkt (1)
- Wolke (1)
- Zement (1)
- Zivilgesellschaft (1)
- cement (1)
- cinema (1)
- civil society (1)
- configuration (1)
- cost estimation (1)
- digital light projection (1)
- duplex stainless steel (1)
- editor (1)
- effective properties (1)
- efficiency (1)
- engineer-technical integration (1)
- fachliche Integration (1)
- fiber reeinforced plastics (1)
- finite element (1)
- flood protection (1)
- fluidity (1)
- france (1)
- history of science (1)
- history of technology (1)
- hydration (1)
- hydraulic measurement (1)
- hydraulics (1)
- image correction (1)
- information sharing (1)
- interactive (1)
- interaktiv (1)
- job description (1)
- latent heat storage (1)
- leakages (1)
- load bearing structure (1)
- machine (1)
- megacity (1)
- mehrphasig (1)
- microstructure (1)
- modell analysis (1)
- modelling (1)
- multi-projector systems (1)
- multigrid (1)
- multiphase (1)
- numerical simulation (1)
- phase change materials (1)
- phase transformation (1)
- philosophy (1)
- plastic building (1)
- privacy (1)
- processing of engineering tasks (1)
- projection (1)
- radiometric compensation (1)
- radiometrische Kompensation (1)
- reciprocity (1)
- remaining load capacitiy (1)
- repetition (1)
- residential buildings (1)
- residual stress (1)
- sequence (1)
- set regulator (1)
- simulation (1)
- sommerlicher Wärmeschutz (1)
- spatial augmented reality (1)
- strength (1)
- structures (1)
- substitute fuel (1)
- superplasticizer (1)
- technische Nutzungsdauer (1)
- thermal building simulation (1)
- thermal protection (1)
- thermo-physical material properties (1)
- thermophysikalische Materialeigenschaften (1)
- traditional social system (1)
- traditionellen Sozialsystem (1)
- unterschiedliche Sicherheitskonzepte (1)
- urbanization (1)
- visual perception (1)
Year of publication
- 2006 (173) (remove)
The concrete is modeled as a material with damage and plasticity, whereat the viscoplastic and the viscoelastic behaviour depends on the rate of the total strains. Due to the damage behaviour the compliance tensor develops different properties in tension and compression. There have been tested various yield surfaces and flow rules, damage rules respectively to their usability in a concrete model. One three-dimensional yield surface was developed from a failure surface based on the Willam--Warnke five-parameter model by the author. Only one general uni-axial stress-strain-relation is used for the numeric control of the yield surface. From that curve all necessary parameters for different strengths of concrete and different strain rates can be derived by affine transformations. For the flow rule in the compression zone a non associated inelastic potential is used, in the tension zone a Rankine potential. Conditional on the time-dependent formulation, the symmetry of the system equations is maintained in spite of the usage of non-associated potentials for the derivation of the inelastic strains. In case of quasi statical computations a simple viscoplastic law is used that is rested on an approach to Perzyna. The principle of equality of dissipation power in the uni-axial and the three-axial state of stress is used. It is modified by a factor that depends on the actual stress ratio and in comparison with the Kupfer experiments it implicates strains that are more realistic. The implementation of the concrete model is conducted in a mixed hybrid finite element. Examples in the structural level are introduced for verification of the concrete model.
For assessment of old buildings, thermal graphic analysis aided with infra-red camera have been employed in a wide range nowadays. Image processing and evaluation can be economically practicable only if the image evaluation can also be automated to the largest extend. For that reason methods of computer vision are presented in this paper to evaluate thermal images. To detect typical thermal image elements, such as thermal bridges and lintels in thermal images respectively gray value images, methods of digital image processing have been applied, of which numerical procedures are available to transform, modify and encode images. At the same time, image processing can be regarded as a multi-stage process. In order to be able to accomplish the process of image analysis from image formation through perfecting and segmentation to categorization, appropriate functions must be implemented. For this purpose, different measuring procedures and methods for automated detection and evaluation have been tested.
The Lucas-Kanade tracker has proven to be an efficient and accurate method for calculation of the optical flow. However, this algorithm can reliably track only suitable image features like corners and edges. Therefore, the optical flow can only be calculated for a few points in each image, resulting in sparse optical flow fields. Accumulation of these vectors over time is a suitable method to retrieve a dense motion vector field. However, the accumulation process limits application of the proposed method to fixed camera setups. Here, a histogram based approach is favored to allow more than a single typical flow vector per pixel. The resulting vector field can be used to detect roads and prescribed driving directions which constrain object movements. The motion structure can be modeled as a graph. The nodes represent entry and exit points for road users as well as crossings, while the edges represent typical paths.
The main hypothesis of this research is that civil society’s participation is able to improve the planning results in the Chinese city of Qingdao in the contemporary age. Qingdao is a young city developed from a German colony in eastern China. Apart from the powers of the government and the market, the 'third power', including mainly the power of volunteer citizens and the citizens’ organisations, also positively promoted the spatial development in Qingdao’s history. Since 1978’s reform, Qingdao’s great progress in urban housing, historic preservation, public space and urban traffic results mainly from the increasing strength of both the government and the market, while the government has always been the dominant promoter for urban construction. The actual planning mechanism – the government formulates 'what to do' itself and decides 'how to do it' with the market – has much limit in reacting to the rapidly changing situation, serving diversified social interests, and raising sufficient funds for the city’s urgent demands in Qingdao. Searching for new development strategies based on the understanding of civil society in the Chinese context can provide a promising perspective on the urban studies of Qingdao. Chinese civil society can be understood as the intermediate sphere of individuals, families, citizen’s organisations, social movements, public communication, and of the non-governmental body’s non-for-profit involvement for the provision of public services between the state and the market. China has its own cultural tradition of civil society, and the modern civil society in China is showing its great potential in improving social integration and urban life. The Chinese government has started to advocate for civil society’s participation in urban construction, and encouraging the 'bottom-up' mechanism in the planning-related issues through political statements and legislative approaches since the last two decades. The existing planning practice in China is able to demonstrate that civil society’s participation helps improve the quality of Chinese urban planning realistically under present conditions, and that moderation of planning experts and the push of the authority are the key factors for successfully integrating the strength of civil society in planning. However, the power of civil society is not yet sufficiently discovered in Qingdao’s planning. For better planning results, the city of Qingdao needs more initiatives to mobilize civil society in the planning practice, as well as more support to enrich the related studies. This thesis recommends that Qingdao establishes the 'Foundation for Collaborative Urban Solutions' through the joint efforts of the authority and civil initiatives, which aims at moderating and facilitating the strength of civil society. The suggested pilot projects include: a. The Community-based Housing Workshop for regenerating the living environment of the run-down communities, where the residents are willing to collaborate with the foundation with own efforts. b. The Heritage Preservation Workshop for suggesting an efficient supervision mechanism involving civil society which protects the historic heritage from being destroyed in the urban construction. c. The Public Space Forum for improving accessibility, quantity and ecologic function in the development of Qingdao’s urban public space with the knowledge and creativity of both the government and the citizens. d. The Mass Transport Forum for a realistic strategy for funding the rail-based traffic system in Qingdao through enabling the civil society - especially the individual citizens and their households to invest. The 'Foundation of Collaborative Urban Solutions' is able to improve Qingdao’s planning to cope with the urban problems the city are facing in its contemporary development, as well as to provide valuable reference for the further research of civil society’s participation in Chinese urban planning.
Due to the amount of flow simulation and measurement data, automatic detection, classification and visualization of features is necessary for an inspection. Therefore, many automated feature detection methods have been developed in recent years. However, only one feature class is visualized afterwards in most cases, and many algorithms have problems in the presence of noise or superposition effects. In contrast, image processing and computer vision have robust methods for feature extraction and computation of derivatives of scalar fields. Furthermore, interpolation and other filter can be analyzed in detail. An application of these methods to vector fields would provide a solid theoretical basis for feature extraction. The authors suggest Clifford algebra as a mathematical framework for this task. Clifford algebra provides a unified notation for scalars and vectors as well as a multiplication of all basis elements. The Clifford product of two vectors provides the complete geometric information of the relative positions of these vectors. Integration of this product results in Clifford correlation and convolution which can be used for template matching of vector fields. For frequency analysis of vector fields and the behavior of vector-valued filters, a Clifford Fourier transform has been derived for 2D and 3D. Convolution and other theorems have been proved, and fast algorithms for the computation of the Clifford Fourier transform exist. Therefore the computation of Clifford convolution can be accelerated by computing it in Clifford Fourier domain. Clifford convolution and Fourier transform can be used for a thorough analysis and subsequent visualization of flow fields.
Die Instandhaltung der städtischen Trinkwassernetze ist Aufgabenschwerpunkt der Wasserversorgungsunternehmen bzw. Netzbetreiber. Dazu notwendige Rehabilitationsplanungen stützen sich zurzeit weitgehend auf die Trendprognose von Schadensraten und die Erfahrungen der Mitarbeiter. Der Einfluss wesentlicher Kenngrößen wie Werkstoffeigenschaften oder die Resttragfähigkeit des Rohres bleiben hierbei größtenteils unberücksichtigt. Über materialtechnische Untersuchungen werden die notwendigen Kenngrößen ermittelt, die eine zuverlässige Bewertung des technischen Zustands des Rohrstrangs ermöglichen. So lassen sich die Prognose der technischen Nutzungsdauer und Rehabilitationsplanungen auf eine solide Basis stellen. In dieser Dissertationsschrift wird hierzu ein Untersuchungs- und Bewertungsalgorithmus mit integrierten Prognoseverfahren erarbeitet.
Die Fachtagung richtete sich an Geschäftsführer, Projektleiter, Bauleiter und Projektsteuerer in Planung und Ausführung mit Beiträgen zum Nachtrags- und Änderungsmanagement am Bau, Workflow-Management in der Baupraxis, Integration von Informationsprozessen auf der Basis von Nemetschek Technologien sowie Kompetenzaufbau durch gezielte Weiterbildung.
This contribution will be freewheeling in the domain of signal, image and surface processing and touch briefly upon some topics that have been close to the heart of people in our research group. A lot of the research of the last 20 years in this domain that has been carried out world wide is dealing with multiresolution. Multiresolution allows to represent a function (in the broadest sense) at different levels of detail. This was not only applied in signals and images but also when solving all kinds of complex numerical problems. Since wavelets came into play in the 1980's, this idea was applied and generalized by many researchers. Therefore we use this as the central idea throughout this text. Wavelets, subdivision and hierarchical bases are the appropriate tools to obtain these multiresolution effects. We shall introduce some of the concepts in a rather informal way and show that the same concepts will work in one, two and three dimensions. The applications in the three cases are however quite different, and thus one wants to achieve very different goals when dealing with signals, images or surfaces. Because completeness in our treatment is impossible, we have chosen to describe two case studies after introducing some concepts in signal processing. These case studies are still the subject of current research. The first one attempts to solve a problem in image processing: how to approximate an edge in an image efficiently by subdivision. The method is based on normal offsets. The second case is the use of Powell-Sabin splines to give a smooth multiresolution representation of a surface. In this context we also illustrate the general method of construction of a spline wavelet basis using a lifting scheme.
Strategic Developments
(2006)
Am Beispiel eines 3-feldrigen Durchlaufträgers wird die Versagenswahrscheinlichkeit von wechselnd belasteten Stahlbetonbalken bezüglich des Grenzzustandes der Adaption (Einspielen, shakedown) untersucht. Die Adaptionsanalyse erfolgt unter Berücksichtigung der beanspruchungschabhängigen Degradation der Biegesteifigkeit infolge Rissbildung. Die damit verbundene mechanische Problemstellung kann auf die Adaptionsanalyse linear elastisch - ideal plastischer Balkentragwerke mit unbekannter aber begrenzter Biegesteifigkeit zurückgeführt werden. Die Versagenswahrscheinlichkeit wird unter Berücksichtigung stochastischer Tragwerks- und Belastungsgrößen berechnet. Tragwerkseigenschaften und ständige Lasten gelten als zeitunabhängige Zufallsgrößen. Zeitlich veränderliche Lasten werden als nutzungsdauerbezogene Extremwerte POISSONscher Rechteck-Pulsprozesse unter Berücksichtigung zeitlicher Überlagerungseffekte modelliert, so dass die Versagenswahrscheinlichkeit ebenfalls eine nutzungsdauerbezogene Größe ist. Die mechanischen Problemstellungen werden numerisch mit der mathematischen Optimierung gelöst. Die Versagenswahrscheinlichkeit wird auf statistischem Weg mit der Monte-Carlo-Methode geschätzt.
The ride of the tram along the line, defined by a time-table, consists of the travel time between the subsequent sections and the time spent by tram on the stops. In the paper, statistical data collected in the city of Krakow is presented and evaluated. In polish conditions, for trams the time spent on stops makes up the remarkable amount of 30 % of the total time of tram line operation. Moreover, this time is characterized by large variability. The time spent by tram on a stop consists of alighting and boarding time and time lost by tram on stop after alighting and boarding time ending, but before departure. Alighting and boarding time itself usually depends on the random number of alighting and boarding passengers and also on the number of passengers which are inside the vehicle. However, the time spent by tram on stop after alighting and boarding time ending is an effect of certain random events, mainly because of impossibility of departure from stop, caused by lack of priorities for public transport vehicles. The main focus of the talk lies on the description and the modelling of these effects. This paper is involved with CIVITAS-CARAVEL project: "Clean and better transport in cites". The project has received research funding from the Community's Sixth Framework Programme. The paper reflects only the author's views and the Community is not liable for any use that may be made of the information contained therein.
The paper presents a linear static analysis on continuous orthotropic thin-walled shell structures simply supported at the transverse ends with a random deformable contour of the cross section. The external loads can be random as well. The class of this structures involves most of the bridges, scaffold bridges, some roof structures etc. A numerical example of steel continuous structures on five spans with an open contour of the cross-section has been solved. The examination of the structure has used the following two computation models: a prismatic structure consisting of isotropic strips, a plates and ribs, with considering their real interaction, and a smooth orthotropic plate equivalent to the structure in the first model. The displacements and forces of the structure characterizing its stressed and deformed condition have been determined. The results obtained from the two solutions have been analyzed. The study on the structure is made with the force method in combination with the analytical finite strip method (AFSM) in displacements. The basic system is obtained by separating the superstructure from the understructure at the places of intermediate supports and consists of two parts. The first part is a single span thin-walled prismatic shell structure; the second part presents supports (columns, space frames etc.). The connection between the superstructure and intermediate supports is made under random supporting conditions. The forces at the supporting points in the direction of the connections removed are assumed to be the basic unknowns of the force method. The solution of the superstructure has been accomplished by the AFSM in displacements. The structure is divided in only one (transverse) direction into a finite number of plain strips connected to each other in longitudinal linear nodes. The three displacements of the points on the node lines and the rotation around those lines have been assumed to be the basic unknown in each node. The boundary conditions of each strip of the basic system correspond to the simply support along the transverse ends and the restraint along the longitudinal ones. The particular strip of the basic system has been solved by the method of the single trigonometric series. The method is reduced to solving a discrete structure in displacements and restoring its continuity at the places of the sections made in respect to both the displacements and forces. The two parts of the basic system have been solved in sequence under the action of single values of each of the basic unknowns and with the external load. The solution of the support part is accomplished using software for analyzing structures by the FEM. The basic unknown forces have been determined from system of canonic equations, the conditions of the deformations continuity on the places of the removed connections under superstructure and intermediate supports. The final displacements and forces at a random point of a continuous superstructure have been determined using the principle of superposition. The computations have been carried by software developed with Visual Fortran version 5.0 for PC.
Heutige Methoden zur Soll-Spezifikation von Bauleistungen (Kostenermittlung und zeitliche Ablaufplanung) gehen von einer abstrahierten und vereinfachten Betrachtung der Zusammenhänge bei Bauprojekten aus. Leistungsverzeichnisse, Kostenermittlungen und Bauzeitpläne orientieren sich nur indirekt an der Geometrie des Bauwerks und der Baustelle. Die dabei verwendeten Medien wie Papier, 2D-Dateien, digitale Leistungsbeschreibungen oder 3D-Darstellungen lassen die Suche nach Informationen auf der Baustelle zu einem zeitaufwändigen und in Anbetracht existierender Medientechnologien ineffizienten Prozess werden. Interaktive virtuelle Umgebungen erlauben die Auflösung starrer Zusammenhänge durch interaktive Eingriffe des Anwenders und visualisieren komplexe bauproduktionstechnische Vorgänge. Das Konzept der visuellen interaktiven Simulation der Bauproduktion sieht vor, die Soll-Spezifikation anhand eines interaktiven 3D-Modells zu entwickeln, um räumliche Veränderungen und parallele Prozesse auf der virtuellen Baustelle im Rahmen der Entscheidungsfindung zum Bauablauf besser berücksichtigen zu können. Verlangt man einen hohen Grad an Interaktivität mit dem 3D-Modell, dann bieten sich Computerspieltechnologien sehr gut zu Verifikationszwecken an. Die visuelle interaktive Simulation der Bauproduktion ist damit als eine 3D-modellbasierte Methode der Prozessmodellierung zu verstehen, die Entscheidungen als Input benötigt und die Kostenermittlung sowie die zeitliche Ablaufplanung als Output liefert.
Für das städtische Leben hat die Existenz sich verändernder Personenströme eine grundlegende Bedeutung.
Ein Werkzeug, das solche kollektiven Bewegungsmuster sichtbar machen kann, wäre dabei ein bedeutendes Hilfsmittel für die Stadtplanung. Im Mittelpunkt der vorliegenden Arbeit steht die Auseinandersetzung mit der Space Syntax Methode.
Diese untersucht den Zusammenhang räumlicher Strukturen mit deren Nutzung. Eine wichtige Erkenntnis ist, dass das kollektive menschliche Verhalten im öffentlichen Raum berechenbar ist. Die Tatsache, dass Passanten bestimmte Wege bevorzugen und andere meiden, führt Space Syntax dabei auf stadträumliche Ursachen zurück. Der Begriff des Natural Movement beschreibt den Anteil dieser räumlich bedingten Nutzung.
Die vorliegende Arbeit gliedert sich in einen theoretischen und einen praktischen Teil. Zunächst werden die für das Verständnis der Space Syntax Methode wichtigen Begriffe und Maßgrößen beschrieben. Der methodische Teil wird ergänzt durch eine Gegenüberstellung nutzer-basierter wissenschaftlicher Ansätze mit der räumlich-orientierten Space Syntax Methode.
Im zweiten Teil der Arbeit wird die praktische Anwendung der Space Syntax Methode am Beispiel des Leipziger City-Tunnels vorgenommen. Das Fallbeispiel ist prädestiniert für die Untersuchung, wie die regionale Vernetzung des Schienenverkehrs aktuell betrieben wird. Von Interesse ist dabei sowohl die Konzeption des zukünftigen Liniennetzes als auch dessen stadträumliche Einbindung.
This research focuses on an approach to describe principles in architectural layout planning within the domain of revitalization. With the aid of mathematical rules, which are executed by a computer, solutions to design problems are generated. Provided that "design" is in principle a combinatorial problem, i.e. a constraint-based search for an overall optimal solution of a problem, an exemplary method will be described to solve such problems in architectural layout planning. To avoid conflicts relating to theoretical subtleness, a customary approach adopted from Operations Research has been chosen in this work. In this approach, design is a synonym for planning, which could be described as a systematic and methodical course of action for the analysis and solution of current or future problems. The planning task is defined as an analysis of a problem with the aim to prepare optimal decisions by the use of mathematical methods. The decision problem of a planning task is represented by an optimization model and the application of an efficient algorithm in order to aid finding one or more solutions to the problem. The basic principle underlying the approach presented herein is the understanding of design in terms of searching for solutions that fulfill specific criteria. This search is executed by the use of a constraint programming language.
The paper is dedicated to decidability exploration of market segmentation problem with the help of linear convolution algorithms. Mathematical formulation of this problem represents interval task of bipartite graph cover by stars. Vertices of the first partition correspond to types of commodities, vertices of the second – to customers groups. Appropriate method is offered for interval problem reduction to two-criterion task that has one implemented linear convolution algorithm. Unsolvability with the help of linear convolution algorithm of multicriterion, and consequently interval, market segmentation problem is proved.
We consider efficient numerical methods for the solution of partial differential equations with stochastic coefficients or right hand side. The discretization is performed by the stochastic finite element method (SFEM). Separation of spatial and stochastic variables in the random input data is achieved via a Karhunen-Loève expansion or Wiener's polynomial chaos expansion. We discuss solution strategies for the Galerkin system that take advantage of the special structure of the system matrix. For stochastic coefficients linear in a set of independent random variables we employ Krylov subspace recycling techniques after having decoupled the large SFEM stiffness matrix.
The contribution presents a model that is able to simulate construction duration and cost for a building project. This model predicts set of expected project costs and duration schedule depending on input parameters such as production speed, scope of work, time schedule, bonding conditions and maximum and minimum deviations from scope of work and production speed. The simulation model is able to calculate, on the basis of input level of probability, the adequate construction cost and time duration of a project. The reciprocal view attends to finding out the adequate level of probability for construction cost and activity durations. Among interpretive outputs of the application software belongs the compilation of a presumed dynamic progress chart. This progress chart represents the expected scenario of development of a building project with the mapping of potential time dislocations for particular activities. The calculation of a presumed dynamic progress chart is based on an algorithm, which calculates mean values as a partial result of the simulated building project. Construction cost and time models are, in many ways, useful tools in project management. Clients are able to make proper decisions about the time and cost schedules of their investments. Consequently, building contractors are able to schedule predicted project cost and duration before any decision is finalized.