نتایج جستجو برای: exposures

تعداد نتایج: 31939  

ژورنال: سنجش و ایمنی پرتو 2013

As public concern mounts over exposures to ionizing radiation stemming from environmental releases of radionuclides following nuclear accidents, there is a growing need to develop reliable techniques that reconstruct exposures and doses to individuals. Especially in situations where conventional dosimeters were not in place at the time of facing to radiation exposure. In order to provide guidan...

1999
David W. Baker Steven M. Christey William H. Hill David E. Mann

This paper traces the development of a Common Enumeration of Vulnerabilities and Exposures (CVE) that standardizes and lists vulnerabilities and security exposures to facilitate data sharing and comparison across computer vulnerability databases, such as those produced by security tools and academic research. The MITRE Corporation is building a syste m that can integrate and manage vulnerabilit...

2007
Wolfgang Petz Kirstin Wenck Bernhard Neumüller Helgard G. Raubenheimer

The reaction of the carbodiphosphorane C(PPh3)2 (1) with [Co2(CO)8] results in the formation of the salt-like complex (HC{PPh3}2)[Co(CO)4] (2) in high yield if THF is used as the solvent. The proton of the cation stems from THF degradation. When the reaction is carried out in toluene, the tetranuclear cluster [Co4(CO)10(PPh3)(μ4-CCPPh3)] (3) is formed in low yield as the only complex which coul...

2005
Roberto C. Portugal Luis A. Guerrero David A. Fuller

The Collaborative Virtual Environments (CVE) support the collaboration, communication and social interaction among users in a virtual space. In this paper we show a customizable CVE implemented on top of the Web to promote the collaborative learning in university courses. Our CVE allows the creation of different interaction environments according to the users’ needs. The design was focused on t...

Journal: :iJET 2008
Ekaterina Prasolova-Førland Theodor G. Wyeld

This paper outlines a pedagogically-oriented case study of the use of a 3D collaborative virtual environment (3D CVE) to break down barriers between partners from different cultural backgrounds whilst performing collaborative activities on a 3D ‘virtual stage’. The 3D collaborative laboratory (3DCollab) described in this paper served as a learning exchange platform to address the need for ICT s...

2007
Juan Casanueva Edwin Blake

Presence in Collaborative Virtual Environments (CVEs) can be classified into personal presence and co-presence. Personal presence is having a feeling of “being there” in the CVE yourself. Co-presence is having a feeling that one is in the same place as the other participants, and that one is collaborating with real people. In this paper we present two experiments designed to investigate some of...

2003
Harry Fisch Robert Golden

The term “environmental estrogen” refers to chemical substances that exhibit some degree of estrogen-like activity. The primary emphasis for potential adverse effects resulting from exposure to environmental estrogens is on in utero exposure because such exposure can occur during critical periods of organogenesis. Assessment of biological plausibility can be based, in part, on the extensive dat...

1997
Chris Greenhalgh

In this paper we make use of automatically generated logs of user activity from 6 meetings held using the MASSIVE-1 virtual reality tele-conferencing system to determine a number of characteristics of user movement and world transition. These results are applied to a consideration of four issues for CVE system design and resource requirements: the amount of network bandwidth and computation req...

2010
Tracey Platt Willibald Ruch

The present study examines how dispositions to ridicule and being laughed at (gelotophobic, gelotophilic or katagelasticistic) assist, or hinder, coping with age-related problems or vulnerabilities. A sample of 131 adult participants completed the PhoPhiKat-30, the PPK-Vulnerability Statement Comparison (PPK-VSC), and the Third Age Vulnerabilities Anxiety Survey (TAVAS). Results showed that the...

1997
Steve Benford Chris Greenhalgh Dave Snowdon Adrian Bullock

We discuss the design of a CVE poetry performance and experiences arising from staging it to two hundred members of the public. The design, a collaborative effort between computer scientists, artists, poets and producers, addresses issues of. virtual world structure; embodiment of performers and audience; navigation interfaces; temporal structure of the event; and mixed reality presentation Exp...

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