254,048 research outputs found
The responses of people to virtual humans in an immersive virtual environment
This paper presents an experiment investigating the impact of behavior and responsiveness
on social responses to virtual humans in an immersive virtual environment
(IVE). A number of responses are investigated, including presence, copresence, and
two physiological responses—heart rate and electrodermal activity (EDA). Our
findings suggest that increasing agents’ responsiveness even on a simple level can
have a significant impact on certain aspects of people’s social responses to humanoid
agents.
Despite being aware that the agents were computer-generated, participants with
higher levels of social anxiety were significantly more likely to avoid “disturbing”
them. This suggests that on some level people can respond to virtual humans as
social actors even in the absence of complex interaction.
Responses appear to be shaped both by the agents’ behaviors and by people’s expectations
of the technology. Participants experienced a significantly higher sense of
personal contact when the agents were visually responsive to them, as opposed to
static or simply moving. However, this effect diminished with experienced computer
users. Our preliminary analysis of objective heart-rate data reveals an identical pattern
of responses
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Controllable radio interference for experimental and testing purposes in wireless sensor networks
Abstract—We address the problem of generating customized, controlled interference for experimental and testing purposes in Wireless Sensor Networks. The known coexistence problems between electronic devices sharing the same ISM radio band drive the design of new solutions to minimize interference. The validation of these techniques and the assessment of protocols under external interference require the creation of reproducible and well-controlled interference patterns on real nodes, a nontrivial and time-consuming task. In this paper, we study methods to generate a precisely adjustable level of interference on a specific channel, with lowcost equipment and rapid calibration. We focus our work on the platforms carrying the CC2420 radio chip and we show that, by setting such transceiver in special mode, we can quickly and easily generate repeatable and precise patterns of interference. We show how this tool can be extremely useful for researchers to quickly investigate the behaviour of sensor network protocols and applications under different patterns of interference, and we further evaluate its performance
Automated Negotiation for Provisioning Virtual Private Networks Using FIPA-Compliant Agents
This paper describes the design and implementation of negotiating agents for the task of provisioning virtual private networks. The agents and their interactions comply with the FIPA specification and they are implemented using the FIPA-OS agent framework. Particular attention is focused on the design and implementation of the negotiation algorithms
DESIGNING SPEAKING TEST BETWEEN RESPONSIVE TEST AND IMITATIVE TEST FOR DEVELOPING VOCABULARY COMPETENCE
Speaking and vocabulary are basic concept in teaching learning process, a teacher should
be know how to construct and designing of speaking test related to vocabulary. By imitating
and responsive we can see student competence.The main point of test are to know the
student competence speak up related to vocabulary item. In behavioristic theory speaking
tends to age, between 0-15 divided into four item
- …