Forschung


Journalpublikationen

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PubDat_216633 G. Wurzer: In-Process agent simulationfor early stages of hospital planning; Mathematical and Computer Modelling of Dynamical Systems, 19 (2013), 4; S. 331 – 343. In the early stages of hospital planning, work processes are typically modelled in a static manner by using flow charts or business process modelling notation as means. Diagrams of this kind are easily simulated; however, employed process engines lack possibilities for dealing with dynamic aspects of the process which depend on the building layout (e.g. elevators, behaviour of automatic delivery carts). If one could give planners the opportunity to employ dynamic entities without having to change their usual workflow, one of the benefits would be that they are not being forced to resort to naive assumptions (e.g. 15 seconds per floor) that are still commonplace in today´s planning practice. As another contribution, we show how agent-based simulation can be used as an analysis tool by using the state of the process simulation to generate arrivals.
PubDat_188072 G. Wurzer: Schematic Systems – Constraining Functions Through Processes (and Vice Versa); International Journal of Architectural Computing (eingeladen), 08 (2010), 02; S. 197 – 213. A novel computer-based design method for planning process-driven buildings is proposed, that extends the traditional architectural schema to include processes. As a benefit the functional program and process models of the building are kept consistent and the communication gap between process planners and architects can be minimized.

 

Konferenzbeiträge

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PubSimAUD15 W. E. Lorenz, G. Wurzer, M. Rössler, I. Hafner, N. Popper, B. Glock: ((MODYPLAN)) – Early-Stage Hospital Simulation with Emphasis on Cross-Clinical Treatment Chains;
Vortrag: SIMAUD 2015 – 6th annual Symposium on Simulation for Architecture and Urban Design, Washington, DC, USA; 12.04.2015 – 15.04.2015;
We have been developing ((MODYPLAN)), a cross-clinical simulation for early-stage architectural planning, in which we enter the patient volume as input and redirect this to different facilities, outputting their utilization as basis for future development. The tool
employs different scenarios that can be compared, facilitating a multi-faceted discussion among stakeholders (clinical providers, their staff and patients). As audience, we target hospital administration, architects and process designers preparing or working on tenders.
PubDat_MATHMOD 2 W. E. Lorenz, M. Bicher, G. Wurzer: Adjacency in hospital planning;
Vortrag: MATHMOD 2015 – 8th Vienna International Conference on Mathematical Modelling, Vienna, Austria; 18.02.2015 – 20.02.2015;
Adjacencies stand at the beginning of a multitude of planning tasks. Especially in hospital planning they are essential for describing relationships between different organizational units. The paper deals with the effective definition of this adjacency matrix in the context of early-stage architectural planning.
PubDat_MATHMOD 1 G. Wurzer, W. E. Lorenz, M. Rößler, I. Hafner, B. Glock, M. Bruckner, N. Popper: MODYPLAN: Early-Stage Hospital Simulation based on Treatment Chains;
Vortrag: MATHMOD 2015 – 8th Vienna International Conference on Mathematical Modelling, Vienna, Austria; 18.02.2015 – 20.02.2015;
This paper deals with the development of a combined hospital simulation/space design tool in which processes are defined individually by patient, as sequence of visited units imported from the Hospital Information System (treatment chains). The major advantage of this approach lies in the fact that we can now design a future space layout in which assumed capacities (staffing, equipment, required space) can be tested against the recorded patient volume, using an Agent-Based Simulation to re-enact each treatment chain. In contrast to other hospital simulations, this approach targets early stages of architectural conception, during which the actual building structure is elaborated. Using the method, we can compare and contrast different layouts during that stage, making simulation a driver for design rather than a tool for late optimization within the final floor plan.
 PubDat_229966 G. Wurzer, W. Lorenz: Causality in Hospital Simulation Based on Utilization Chains;
Vortrag: SimAUD 2014, Tampa FL; 13.04.2014 – 16.04.2014; in: “Proceedings of SimAUD 2014″, (2014), S. 161 – 164.
The operation of complex buildings (e.g. airports, hospitals, industrial facilities, penitentiaries) is commonly simulated forward in time: Agents arrive and perform their prescribed tasks, utilizing resources and space as required. When trying to understand the model’s state at a certain point in time, say, “why is this resource over-utilized”, one must either guess or run the simulation again to determine what the cause is. Our contribution lies in the introduction of causal chains into the workflow of an agent-based simulation, so that an end user (in our case: process planner and hospital architect) can get a further insight into the intermediate simulation result at a certain point in time, without having to re-run it.
PubDat_224432 B. Glock, G. Wurzer, F. Breitenecker, N. Popper: Reverse Engineering Hospital Processes Out of Visited Nodes;
in: “EUROSIM 2013 8th EUROSIM Congress on Modelling and Simulation”, K. Al-Begain, D. Al Dabass, A. Orsoni, R. Cant, R. Zobel (Hrg.); herausgegeben von: The Institute of Electrical and Electronics Engineers, Inc.,; EUROSIM 2013 8th EUROSIM Congress on Modelling and Simulation, Cardiff, 2013, ISBN: 978-0-7695-5073-2, S. 312 – 317.
During hospital planning, “flow-chart”-like depictions of processes (nodes and edges) are often overlaid over the floor plan of a clinic, in order to model patient pathways, which is often not accurate. In this approach a dispatcher within each node is proposed, that carries the logic for choosing a next node for each patient (modelled as agent) and it is than possible to reverse engineer the pathways out of the visited nodes.
PubDat_220104 G. Wurzer, W. E. Lorenz: From Quantities to Qualities in Early-Stage Hospital Simulation; Vortrag: IWISH 2013, Athens; 25.09.2013 – 27.09.2013; in: “Proceedings of the 2nd International Workshop on Innovative Simulation for Health Care”, Dime Università di Genova, (2013), ISBN: 978-88-97999-20-1; 6 S. In early stages of hospital planning early conception specifies requirements in a quantitative way, therefore fuzzy logic is used to map back crisp simulation results into linguistic terms which than can be compared to the requirements set by the planning team. In this way communication between planners and modellers can be simplified.
PubDat_220103 G. Wurzer:Versioning in Early-Stage Hospital Simulation; Vortrag: IWISH 2013, Athens; 25.09.2013 – 27.09.2013; in: “Proceedings of the 2nd International Workshop on Innovative Simulation for Health Care”, Dime Università di Genova, (2013), ISBN: 978-88-97999-26-3; 7 S. A framework for augmenting early-stage hospital simulation by versioning is presented. Planners have the opportunity to quickly derive alternative models and variations and a design tool is built by combining the simulation and the revision history to determine what design paths should be followed and which should be abandoned.
PubDat_211730 G. Wurzer: Process Atomism: Is the World (so) Simple?; in: “MEHR-WERT Architektur & Raumplanung”, herausgegeben von: Fakultät Architektur, TU Wien; Eigenverlag, Wien, 2012, (eingeladen), S. 112 – 113. Architecturally, a process is given as a sequence of functions to be visited in a space. This space is defined via the concepts of actions and capabilities where the latter one is atomic (non-ambiguous, non-decomposable). This paper simply argues that every process simulation has to concern itself with basic vocabulary.
PubDat_209962 G. Wurzer, W Lorenz, M. Pferzinger: Pre-Tender Hospital Simulation Using Naive Diagrams As Models;Vortrag: IWISH 2012, Vienna; 19.09.2012 – 21.09.2012; in: “Proceedings of the International Workshop on Innovative Simulation for Health Care 2012″, Dime Università Di Genova, PDF on CD (2012), ISBN: 978-88-97999-13-3; Paper-Nr. 35, 6 S. Hospital simulation has so far concentrated on late phases of architectural planning, in which the design is already fully formulated and undergoes optimization. This paper moves into the exactly opposite direction and tries to embed simulation into the earliest phase imaginable, which, interestingly, is well before any architectural planning occurs: The pre-tender work that is done by or on behalf of the client, using naïve diagrams based on interviews with the medical staff as models.
PubDat_207515 G. Wurzer: Early-Stage Egress Simulation for Process-Driven Buildings; Vortrag: 6th International Conference on Pedestrian and Evacuation Dynamics – PED 2012, Zurich; 06.06.2012 – 08.06.2012; in: “Proceedings of PED 2012″, Springer, (2012). This approach aims to leverage a static process model in order to facilitate a dynamic egress simulation. Therefore a process simulation is performed until a specified time t is reached and the typical location of the working staff as well as occupancy of all areas of the building is calculated. This result is feed into an agent-based egress simulation. This hybrid method is suited for early stages of building design, when different spatial configurations and process variants are under consideration.
PubDat_206812 G. Wurzer: In-Process Agent Simulation for Early Stages of Hospital Planning; Vortrag: Mathmod 2012 – 7th Vienna Conference on Mathematical Modelling, Wien; 14.02.2012 – 17.02.2012; in: “Preprints – Mathmod 2012 Vienna”, ARGESIM, Report no. S38 (2012), Paper-Nr. 190, 6 S. Due to the lack of possibilities for planners of dealing with dynamic aspects of the process which depend on the building layout in the business process modelling notation, in this paper a hybrid approach is proposed that extends process simulation through agent-based simulation. The example implemented is an agent-based simulation of pedestrian movement through an architectural schema where processes are fed into a business process simulation, which communicates bi-directional with a set of agent-based simulations performing the actual “dynamic” work.
PubDat_186819 G. Wurzer, M. Ausserer, H. Hinneberg, C. Illera, A. Rosic: Sensitivity Visualization of Circulation under Congestion and Blockage; Poster: PED 10 The Fifth International Conference on “Pedestrian and Evacuation Dynamics”, Gaithersburg, MD; 08.03.2010 – 10.03.2010; in: “Proceedings of PED 2010″, Springer, (2010), S. 899 – 902. The sensitivity of the path networks against congestions and blockages in large building is researched. Therefore a novel visual planning tool that enables architects to estimate the impact of disturbances on the building circulation without having to use a simulation package is proposed, which as additionally integrated in a common CAD system.
PubDat_180225 G. Wurzer: Systems: Constraining Functions through Processes (and Vice Versa); Vortrag: eCAADe 27 Istanbul 2009, Istanbul; 16.09.2009 – 18.09.2009; in: “Computation: the new realm of architectural design : eCAADe 2009″, (2009), ISBN: 978-0-9541183-8-9; S. 659 – 664. A novel method for planning process-driven buildings which binds so called functions to processes in order to avoid functions that are not present in any process and process that lack required functions. This approach is implemented as 3D software.

 

Vortrag (ohne Konferenzbeitrag)

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G. Wurzer: Process Visualisation and Simulation in Hospital Planning; Hauptvortrag: ASIM 2014 – 22. Symposium Simulationstechnik, HTW Berlin (eingeladen); 03.09.2014 – 05.09.2014. This talk deals with visualizations of processes in the area of hospital planning.
 PubDat_220105 G. Wurzer: Object Oriented Programming in Simulation; Vortrag: ArgeSIM Summerschool 2013, Dolsko (eingeladen); 14.09.2013 – 15.09.2013 This talk deals with Object Oriented Programming (OO) in Simulation. Especially how OO applies to simulation and what best practices are.
pub-ar_9073 G. Wurzer: Rigorous Visualization of Processes for Hospital Planning; Vortrag: Structure-Process-Patterns 2007: A Seminar on Urban Space, TU Wien, Inst. f. Architekturwissenschaften, Abt. Digitale Architektur und Raumplanung; 06.12.2007. This talk deals with the problems of visualization of processes in hospital simulation. It includes considerations on data gathering for visualization as well as zooming and design.

 

Dissertation

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PubDat_200759 G. Wurzer: Prozessvisualisierung in der Krankenhausplanung; Begutachter/in(nen): G. Franck, C. Illera; Institut für Architekturwissenschaften, Abteilung Digitale Architektur und Raumplanung, 2011; Rigorosum: 10.05.2011. This thesis brings together two complementary notions of processes in a common visualization, which is based on the architectural schema. Architects describe processes by referring to the actual design or schema of the building in which they inscribe functions and connect these using pathways, whereas process planners specify processes in using a sequence of abstract activities, which have no reference to a location on a design. This specified visualization is targeted in early stages of design and helps all participants communicate.