We have studied the hydrostatic pressure dependence of Ge nanocrystals embedded in a SiO2 matrix on a Si substrate by Raman scattering at room temperature. During the first cycle of increasing pressure, we observed a ...
We have studied the hydrostatic pressure dependence of Ge nanocrystals embedded in a SiO2 matrix on a Si substrate by Raman scattering at room temperature. During the first cycle of increasing pressure, we observed a step change in the Ge Raman mode from 310.4 to 313.8cm−1 at ∼23kbar. The linear pressure coefficients α obtained before and after the step change at ∼23kbar are 0.42 and 0.64cm−1kbar−1, respectively. Upon decreasing pressure, the Ge mode follows a single slope of pressure coefficient α=0.64cm−1kbar−1. A finite-element analysis was carried out to investigate the elastic-field distribution in the Ge/SiO2/Si nanocrystal system, where the discontinuity of the specific geometric configuration with different elastic constants causes local areas of stress concentration around the interface. The step change of the Raman shifts with pressure at ∼23kbar was attributed to complete delamination between the SiO2 film and the Si substrate.
This paper proposes a norm-type discrete algebraic Riccati Equation, which is a generalized version of the well-known standard discrete algebraic Riccati Equation, and has additional norm terms. Under stabilizability ...
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In this paper we present the structure of the simulator which would allow diving beginners to experience the effect of buoyancy control mechanisms before actually entering the *** believe such training would be less s...
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The timing to generate communicative actions and utterance in face--to-face greetings are analyzed by synthesis. First, the analysis of the greeting experiment clarifies that utterance of human is delayed for 0.3 sec ...
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The timing to generate communicative actions and utterance in face--to-face greetings are analyzed by synthesis. First, the analysis of the greeting experiment clarifies that utterance of human is delayed for 0.3 sec to communicative actions. Then, the analysis by synthesis by using an embodied robot confirms that the variation of the lags of utterance to communicative actions brings different communicative effects, i.e. about 0.3 sec lag is desirable for single greetings, and the longer lag is for polite greetings. This result demonstrates the importance of the timing in human-robot embodied communication.
Collaboration mainly consists of two tasks; one is each partner's task that is performed by the individual, the other is communication with each other. Both of them are very important objectives for the collaborat...
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Collaboration mainly consists of two tasks; one is each partner's task that is performed by the individual, the other is communication with each other. Both of them are very important objectives for the collaboration support system. In this paper, a collaboration support system for 3D shape evaluation in virtual space is developed on the basis of studies in 3D shape evaluation and communication support in virtual space. The present system provides the two viewpoints for each task. One is the viewpoint of back side of user's own avatar for the smooth communication. The other is that of avatar's eye for 3D shape evaluation. Switching the viewpoints satisfies the task conditions for 3D shape evaluation and communication. In this paper, the some characteristics of the present system are described and the effectiveness of them is also demonstrated by the sensory evaluation and questionnaires analysis.
This paper proposes an intelligent diagnosis method for plant machinery in multi-fault state using wavelet analysis, genetic programming (GP), and possibility theory. The wavelet analysis is used to extract feature sp...
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This paper proposes an intelligent diagnosis method for plant machinery in multi-fault state using wavelet analysis, genetic programming (GP), and possibility theory. The wavelet analysis is used to extract feature spectra of multi-fault state from measured vibration signal for the diagnosis. Excellent symptom parameters for distinguishing fault states are automatically generated by GP. Because the value of symptom parameter calculated to express the feature of the vibration signal fluctuates even if machine state does not change, fuzzy diagnosis is necessary. After obtaining the excellent symptom parameters by GP called GP-SPs, the membership functions of GP-SPs are needed for fuzzy diagnosis. We also discuss the identification method of membership function of symptom parameters using probability theory and possibility theory, and show the inference method for identifying faults types. The methods proposed in this paper are verified by applying them to the diagnosis of rolling bearing in multi-fault state.
In this paper, we develop a 4-DOF force display system for the analysis by synthesis of facial color for the interaction with anthropomorphic agent. By using the system, we analyze the changes in facial skin temperatu...
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ISBN:
(纸本)0780377591
In this paper, we develop a 4-DOF force display system for the analysis by synthesis of facial color for the interaction with anthropomorphic agent. By using the system, we analyze the changes in facial skin temperature and facial color associated with circulation dynamics in response to forced actions. On the basis of the analysis, we propose a synthetic method for the affect display of virtual face with facial color and expression in force display, and the effectiveness of the method is confirmed. Finally, we develop a prototype of virtual arm wrestling system with anthropomorphic agent using synthesized dynamic three-dimensional facial color and expression.
An embodied virtual face-to-face communication system is developed for three human interaction supports and the analysis by synthesis. The system provides networked virtual communication environment in which three rem...
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An embodied virtual face-to-face communication system is developed for three human interaction supports and the analysis by synthesis. The system provides networked virtual communication environment in which three remote talkers can share embodied interactions by observing their interaction of avatars called VirtualActors including themselves in the same virtual space. The effectiveness of the system is demonstrated by the sensory evaluation of the communication experiment and selected most favorite viewpoint when talker's own VA was semitransparently presented in 8 groups, 3 talkers per group. The importance of mutual embodied sharing in communication is also clarified. The system would be expected to form the foundation of group embodied interaction support system as well as the analysis and understanding of group embodied interaction.
A speech-driven embodied interactive actor called InterActor with both functions of speaker and listener is developed for activating human interaction and communication by generating expressive actions and motions coh...
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A speech-driven embodied interactive actor called InterActor with both functions of speaker and listener is developed for activating human interaction and communication by generating expressive actions and motions coherently related to speech input. InterActor is the electronic media version of the physical interaction robot called InterRobot for robot-mediated communication support, which sets free from the hardware restriction. This paper demonstrates the effects of InterActor on interaction in human speech input by the analysis of speech temporal parameters. It is found that speech duration increases because of the increase of total silence duration and the number of silent parts in human-to-InterActor speech input, which is the advantage of real time processing for word-spotting and speech recognition. Interaction with InterActor is also highly evaluated in smoothness, enjoyment and preference by sensory evaluation.
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