Figure 3 - uploaded by Michael Macedonia
Content may be subject to copyright.
Source publication
Virtual environments (VEs) are a broad multidisciplinary research area that includes all aspects of computer science, virtual reality, virtual worlds, teleoperation and telepresence. A variety of network elements are required to scale up virtual environments to arbitrarily large sizes, simultaneously connecting thousands of interacting players and...
Similar publications
Metaphors are commonly used by software developers in the creation of GUI's. This paper looks at the use of multi-user VRML to create virtual metaphors, developing a conceptual design tool that can be used intuitively with little or no training.
Creation of 3D virtual environments (VE) can be performed using a variety of design tools, most of which create 3D vir- tual worlds using high definition graphics, 3D Game engines and smooth animation techniques. The produced result is re- alistic and eye-catching. Although a VR model is always less detailed than the real world artifact it represen...
Virtual Reality Modeling Language (VRML) is a tool for creating and distributing virtual worlds on the Internet. It can be used to create a 3D virtual environment by computer-rendered simulation of an interactive scene with links to other virtual worlds or 2D information. It allows information to be organized spatially and related by location and p...
The paper describes main principles and guidelines for creation of realistically looking virtual town. It is focused mainly on the work on the project “Virtual Old Prague ” and usage of original authoring tools and additional third party applications. It depicts special procedures and shows pit-falls and advices within the work. Methods and procedu...
In this paper we intend to recreate an interactive 3D virtual version of the real environment of a mobile robot and to ensure a bi-directional interaction with all the components of this workplace. This IVW (interactive virtual world), automatically built using VRML combined with Java, is actualized on line with 3D models of the objects present in...
Citations
... In recent years, with the development of virtual reality technologies, there have been many attempts to represent actual facilities, services, stores, etc. in virtual spaces [1]- [3]. Attempts have been made to develop a virtual space as a social infrastructure and expand it as a place for people's activities [4]- [6]. As a result of such research, if virtual reality as a social infrastructure expands in the future and becomes the basis of human activities, users will be able to perform more free-ofcharge activities in the virtual world than they can in the real world. ...
In this paper, using a new advertising method within a virtual space, we examine a method that portrays a crowd by showing multiple people in front of institutions and stores. This method is intended to promote advertising by utilizing the behavioral psychology of users who want to agree with what many other people support. We examine how the attractiveness of the store changes due to the presence or absence of crowds in a shopping mall within a virtual space. Although there were some subjects whose store ratings were not increased due to the negative image of crowds and the unnaturalness of the crowds, the proposed method generally increased the appeal of the store and the subjects' impression of the store.
... (Though, in reality, the world is being simulated in portions by various computers.) Apart from several essentially algorithmic problems, the limited band widths of long range computer networks pose the real technological issue [Brutzman et al. 1995]. ...
The following contribution describes work in progress within the context of the focal field of research and development remote teamwork (RT) of Vienna University of Technology (Dept. of Local Planning - IFOR), which is carried out in cooperation with the Institute for Spatial Interaction and Simulation (IRIS-ISIS), Vienna, exchanging experience with the Research Institute for Symbolic Computation (RISC Linz-Hagenberg). Research work is aimed at the elaboration of suitable collaborative remote working structures for research and project transactions, including study projects, within the context of spatial planning on the basis of ATM (Asynchronous Transfer Mode: a technology of broad band telecommunications). The generation and manipulation of digital spatial models and their virtual transportation within large spatial distances represent main objectives. The current subjects in urban and regional planning and in architecture act as test projects to be defined in the course of the research project in their contents and spatial context and to be represented as digital spatial working models.
... though, in reality, the world is being simulated in portions by various computers). Apart from several essentially algorithmic problems the limited band widths of long-range computer networks pose the real technological issue (Brutzman et al. 1995). The mentioned research subject is closely connected to the research field "Distributed Virtual Reality (DVR)": Distributed Virtual Reality (DVR) may be defined as systems where geographically distributed participants connected via networks act and interact in a computer-generated world with one another as if in actual direct contact (Röhl 1995, Löffler 1995. ...
Collaborative Teamwork is regarded to be one of the most outstanding fields of teaching and research within the context of Architecture, Urban and Regional Planning. This focal field is closely related to the research field of "Remote Teamwork", i.e. the substance-related cooperation of people over spatial distances in decision-situations aiming at the elaboration of suited remote-working structures for research, project transactions and teaching. The generation and manipulation of digital spatial models and their virtual transportation within large spatial distances represent the main research objectives. The Faculty of Architecture, Urban and Regional Planning therefore is stressing information technologies within academic context. The following contribution is dedicated to the description of two teaching projects, namely ?BraGraLuWi" (collaborative teamwork between the universities of Technology Bratislava, Graz, Luton and Vienna) and carrying-out a VRML-workshop, furthermore to the development of Remote Teamwork-structures preferably on the basis of ?ATM" (a technology of broad band telecommunications) at Vienna University of Technology.
... The technical-functional challenge concerning "Remote Teamwork" mainly consists of coordinating the actions of all participants in the virtual world and their impact thereon in such a way that all participants receive the view of a singular logical (consistent) world, even though, in reality, the world is being simulated in portions by various computers. Apart from several essentially algorithmic problems the limited bandwidths of long-range computer networks pose the real technological issue (Brutzman et al. 1995). ATM lends itself extremely well to the realization of RT necessarily being based on high-speed networks. ...
The following contribution describes research work in progress within the context of the focal field of research and development "Remote Teamwork (RT)" at Vienna University of Technology. Current research work is aiming at the elaboration of suited collaborative remote-working structures for research and project transactions (incl. study projects) - within the context of spatial planning - on the basis of Asynchronous Transfer Mode (ATM, a technology of broad band telecommunications). The generation and manipulation of digital spatial models and their virtual transportation within large distances represent main objectives. The current subjects in architecture, urban and regional planning (e.g. master planning, building-up planning, urban design, interior design) act as test projects to be defined in the course of the research work in their contents and spatial context and to be represented as digital spatial working models. Special attention is given to consolidation, harmonizing and advancement of current single activities in the field of ATM (e.g. facilitation of the access to technology, definition of project partners at the global level, development of originary, planning- and design-relevant software on the basis of native-ATM).
... Complicated and hazardous at-sea missions present many technical challenges to observe the AUV and also to diagnose the missions being carried out. Due to difficulties running a real-life test scenarios on the harsh ocean environment and resources limitations, the use of modeling and simulation for AUV development, trouble-shooting, and mission diagnostics are heavily justifiable [5] [6]. ...
A sophisticated simulator provides a cost-effective measure to carry out preliminary mission testing and diagnostic while reducing potential failures for real life at sea trials. The presented simulation framework covers three key areas: AUV modeling, sensor modeling, and environment modeling. AUV modeling mainly covers the area of AUV dynamics. Sensor modeling deals with physics and mathematical models that govern each sensor installed onto the AUV. Environment model incorporates the hydrostatic, hydrodynamics, and ocean currents that will affect the AUV in a real-time mission. Based on this designed simulation framework, custom scenarios provided by the user can be modeled and its corresponding behaviors can be observed. This paper focuses on the accuracy of the simulated data from AUV model and environmental model derived from a developed AUV test-bed which was jointly upgraded by DSTO and the University of Adelaide. The main contribution of this paper is to experimentally verify the accuracy of the proposed simulation framework.
... Segundo Jalote (1994), sistema distribuído cria a sensação de que toda rede de computadores é um único sistema de tempo compartilhado (time-sharing), em vez de um grupo de máquinas independentes. c) Software é a palavra-chave em sistemas distribuídos. ...
... A seguir, consta a metodologia proposta para avaliação dos AVDs. Esta metodologia, relatada em sua totalidade em Snowdon (1994), Sementille (1999) ...
... An exposedField declares implicitly an eventIn with the same name, hence, also de nes an event handler with the same name in the prototype de nition. 5 Note that unlike VRML a corresponding eventOut is not declared. When the eventIn receives an event with value V, the value of the exposedField is changed to V. The event handler de ned implicitly is assumed to perform this operation. ...
We suggest a new 3D scene description language which is a derivative of VRML (Virtual Reality Modeling Language). The language enhances the object-oriented feature of VRML, especially with respect to programming the behavior of nodes.
... The fact that this protocol is tuned for DVEs has three interesting consequences. The first one is that the frequency with which VR–nodes send updates has a maximum of 30 messages a second [13]. This implies that one message is sent for every screen update. ...
We present the design and implementation issues of a Reliable MultiPeer Protocol (RMPP). This protocol is suitable for applications
in the area of distributed virtual environments and is written in Java. Motivation, protocol classification, design goals
and the error recovery algorithm are discussed. This paper concludes by presenting a possible application of the RMPP.
... The Living Worlds standard [13] adds multi-user access capabilities to these VRML models and other extensions to VRML, such as the recommended practices for SQL database access [14], enable the development of DVEs for corporate and business applications. With standard web browsers as an execution engine for DVEs and while new networking protocols are evolving [3,4], the Internet will increasingly become the most common DVE enabler. ...
. In this paper, we present a user-friendly 3D Distributed Virtual
... A detailed discussion of the implementation issues for virtual environments is presented in [91], also available on-line at http://www.stl.nps.navy.mil/~brutzman /vrml/vrml_95.html. ...
displays of information (graphs, plots, etc.) are a recent invention at around 1750-1800 [15]. Andrews defines Information Visualisation as the visual presentation of information spaces and structures to facilitate their rapid assimilation and understanding [149]. In the same document, the authors give a collection of Information Visualisation pointers (references also available at http://www.iicm.edu/hci/ivis). A more complete on-line document for Information Visualisation, from Andrews is available at http://www.iicm.edu.hci/ivis/node2.htm. A report on three-dimensional Information Visualisation is given by Young, also available on-line, at http://www.dur.ac.uk/~dcs3py/pages/work/documents/litsurvey /IV-Survey/ [150]. This report gives a visualisation techniques enumeration and a survey of research visualisation systems. Two other Web resources for Information Visualisation are Olive (Online of Information Visualisation Environments - http://otal.umd.edu/Olive/), and the CS348 course...
