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D Greenwood, S Lockley, O Jones, P Jones

THE EFFICACY OF REALISTIC VIRTUAL ENVIRONMENTS IN CAPTURING USER EXPERIENCE OF BUILDINGS

Abstract: Virtual models can offer early and inexpensive proxies of how the real environment will be experienced by its users. However, until relatively recently, the usefulness of virtual models has been constrained by the technological limitations of the software and hardware. Games engines now offer the industry a way to import multiple 3d formats to streamline workflow, with far greater realism and complex interactions with the created virtual environment. In order to be accepted as a reliable tool for design development and problem solving in architecture, engineering and construction, these virtual experiences must be capable of producing user-feedback that is credible. The assumption that a model of human experience from a virtual environment can be a dependable representation of how the real environment will be experienced needs to be tested. Such tests have hitherto offered inconclusive results and the paper reports on the early stages of a current project that aims to redress this. The use of equipment familiar to cognitive psychologists, such as lightweight head-mounted eye tracking systems, should enable comparisons to be made between user-experiences of real environments and their realistic virtual counterparts. Should the virtual environments be shown to communicate similar physiological responses from the participants and deliver similar experiential qualities when compared to the real environment, then it can be argued that they offer realistic visual representations and accurate representations of experience.

Keywords: Architectural design, Games, User experience, Virtual environments

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Full text: content.pdf (84,185 bytes) (available to registered users only)

Series: w78:2011 (browse)
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Lavrencic,Darko

THE INTRACRANIOVERTEBRAL VOLUMES, THE CEREBROSPINAL FLUID FLOW AND THE CEREBROSPINAL FLUID PRESSURE, THEIR HOMEOSTASIS AND ITS PHYSICAL REGULATION

Abstract: Preface. After publication of the presented hypothesis some predictions were verified independently by other authors: (1) Monro-Kellie "four compartments" doctrine, (2) relation between CSF formation and CSF removal in physiological phase as presented with illustrative curves, (3) hypovolemia during intracranial hypotension syndrome, (4) increased CSF proteins in decreased CSF flow and (5) influence of neuro-vegetative system on CSF pressure. The predictions not yet verified: (1) turning points B-low and B-high that represent physiological borders, (2) pathophysiological self-sustaining phases of low and high CSF pressure with corresponding minimal or maximal CSF volume (maximal dural sac collapse or distension) and no CSF transport, (3) compensated and de-compensated conditions. None of the predictions were disproved yet. The purpose of this presentation on the INTERNET is to promote further discussions about unverified predictions and to encourage clinical research and experimenting in this direction. Summary. Physiological and pathophysiological processes in the intracraniovertebral space are specific because of its rigid and constant volume (Monro-Kellie doctrine). The hypothesis presents how the homeostasis of the intracraniovertebral compartments' volumes, cerebrospinal fluid (CSF) flow and CSF pressure is physically regulated. The hypothesis takes into account the quantitative and qualitative relations regulating CSF formation and CSF removal on which the homeostasis is based.

Keywords: cerebrospinal,fluid,intracranial,hydrodynamics,formation,production,reabsorption,pressure,hypothesis,flow,homeostasis,physical,CSF,hypotension,hypertension,circulation,dural,sac,sinuses,venous,sinuses,extradural,epidural,chorioideus,plexus,hypovolemia,hydrocephalus,subarachnoidal,space,ventricles,arachnoidal, villi,granulations,cribriform,plate,canalis,centralis

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Full text: content.lavrenč (696,205 bytes) (available to registered users only)

Series: other (browse)
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W Lee, G C Migliaccio

Field Use of Physiological Status Monitoring (PSM) to Identify Construction Workers' Physiologically Acceptable Bounds and Heart Rate Zones

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Full text: content.pdf (291,196 bytes) (available to registered users only)

Series: w78:2014 (browse)
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