Ignition delay time (Td) has been widely used to distinguish the abnormal discharges from the normal ones in wire electrical discharge machining (WEDM) process. In this paper an on-line analysis system for the causali...
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This work approaches relative aspects to the alarm processing problem and fault diagnosis in system level, having as purpose filter the alarms generated during a outage and identify the equipment under fault. A method...
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Traditional vacuum-based thermal energy conversion (VTEC) devices with "flat" metal emitters have been compromised by high working temperature mainly due to high work function and electron space charge effec...
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The main knowledge management challenges are to capture, store and reuse contextual knowledge generated during interactions that occur daily in an organization. In this paper, we propose an activity context-aware arch...
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The main knowledge management challenges are to capture, store and reuse contextual knowledge generated during interactions that occur daily in an organization. In this paper, we propose an activity context-aware architecture to support knowledge management in working processes. The required features for this architecture are processing, reasoning and sharing contextual knowledge involving information about activities performed. We also present results from evaluation of our proposal — A-CoBrA — for a specific domain.
Biology has played a key role in influencing the development and optimization of a significant variety of sensors that provide engineers new ideas for improvements to current technology, new sensor technology, and pot...
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Biology has played a key role in influencing the development and optimization of a significant variety of sensors that provide engineers new ideas for improvements to current technology, new sensor technology, and potential sensor miniaturization. Biological systems, such as plants and insects offer significant methods of flight, imaging, sensing, adaptation to environment, and locomotion. The biological domain provides inspiration at many levels, such as cellular, organism, and species. A biological system is any biological organism, organism subsystem, or portion of an organism that is observed to exist. Abstraction of the biological system using analogical reasoning allows an engineering designer to look for a specific solution through mimicry in an approach to biology-inspired design. The analogous approach relies on the idea of figuring out the basis of overall biological system and of each part or subsystem that achieves the overall goal.
This paper presents a scheme for using tactile rhythms to convey interpersonal distance to individuals who are blind or visually impaired, with the goal of providing access to non-verbal cues during social interaction...
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ISBN:
(纸本)9781605582474
This paper presents a scheme for using tactile rhythms to convey interpersonal distance to individuals who are blind or visually impaired, with the goal of providing access to non-verbal cues during social interactions. A preliminary experiment revealed that subjects could identify the proposed tactile rhythms and found them intuitive for the given application. Future work aims to improve recognition results and increase the number of interpersonal distances conveyed by incorporating temporal change information into the proposed methodology.
The emerging challenges of the "engineer of 2020" have been clearly identified and extensively discussed. It has become evident that there is a crucial need for change in the practice of engineering and the ...
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This fall a new approach was undertaken in our senior design course that uses tools available on the internet to gave the students means for improved communications between members within a team. Being reported on is ...
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We have proposed a checklist-based usability inspection technique (WDP - Web Design Perspectives-Based Usability Evaluation) specific for Web applications' usability evaluation and we are following an experimentat...
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Unvoiced speech poses a big challenge to current monaural speech segregation systems. It lacks harmonic structure and is highly susceptible to interference due to its relatively weak energy. This paper describes a new...
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Unvoiced speech poses a big challenge to current monaural speech segregation systems. It lacks harmonic structure and is highly susceptible to interference due to its relatively weak energy. This paper describes a new approach to segregate unvoiced speech from nonspeech interference. The system first estimates a voiced binary mask, and then performs unvoiced speech segregation in two stages: segmentation and grouping. In segmentation, time-frequency units labeled as 0 in the voiced binary mask are first used to estimate the noise energy and spectral subtraction is then performed to generate time-frequency segments in unvoiced intervals. Based on the type of noise, unvoiced segments are grouped either by selecting segments consistent with those generated by onset/offset analysis or by Bayesian classification of acoustic-phonetic features. Systematic evaluation and comparison show that the proposed approach improves the performance of unvoiced speech segregation considerably.
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