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The University of California, Irvine (UCI or UC Irvine) is one of the ten general campuses of the University of California. UCI was founded in 1965, and is located in Irvine, California, USA.
More information: http://en.wikipedia.org/wiki/University_of_California,_Irvine
Nanotechnology EECS 217C Spring 2003
Nanotechnology EECS 217C Spring 2003Undergraduates who meet the prerequisites (Physics 51A and EECS 113A) may take this course. Fabrication and characterization techniques of electrical circuit elements at the nanometer scale Instructor: Professor Peter Burke Time: 2-3:20 pm M W Place: ICF 103 The image shown is a DNA molecule covalently linked to a carbon nanotube. The nanotube can be contacted with electrodes, providing an electronic link to molecular biology. This simple example illustrates how separations between traditional academic boundaries become blurred at the nanoscale. In this course students will be prepared for the increasingly multidisciplinary world of nanotechnology. Nanofabrication techniques Characterization techniques Single electron transistors, coulomb blockade Quantization of electrical resistance, Landauer-Bűttiker formalism Molecular electronics Nanotubes, nanowires Bio-nano-electronics |
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Nanotechnology EECS 217C Spring 2004
Nanotechnology EECS 217C Spring 2004Undergraduates who meet the prerequisites (Physics 51A and EECS 113A) may take this course. Fabrication and characterization techniques of electrical circuit elements at the nanometer scale Instructor: Professor Peter Burke Time: 6-8:50 PM Place: PSCB 120 The image shown is a DNA molecule covalently linked to a carbon nanotube. The nanotube can be contacted with electrodes, providing an electronic link to molecular biology. This simple example illustrates how separations between traditional academic boundaries become blurred at the nanoscale. In this course students will be prepared for the increasingly multidisciplinary world of nanotechnology. Nanofabrication techniques Characterization techniques Single electron transistors, coulomb blockade Quantization of electrical resistance, Landauer-Bűttiker formalism Molecular electronics Nanotubes, nanowires Bio-nano-electronics |
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Why Oil Energy Independence May Not Be a Good Idea Dennis Silverman
Dept. of Physics and Astronomy
U C Irvine
www.physics.uci.edu/~silverma/
October 30, 2008
Why Oil Energy Independence May Not Be a Good Idea Dennis Silverman Dept. of Physics and Astronomy U C Irvine www.physics.uci.edu/~silverma/ October 30, 2008 |
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ENERGY POLICY MAY 12, 2006
JOHN BUSH
ENERGY POLICY MAY 12, 2006 JOHN BUSH |
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Critique of the Pickens Plan for U.S. Energy in the Next 10 Years Dennis Silverman
U. C. Irvine
Physics and Astronomy
www.physics.uci.edu/~silverma/
Critique of the Pickens Plan for U.S. Energy in the Next 10 Years Dennis Silverman U. C. Irvine Physics and Astronomy www.physics.uci.edu/~silverma/ |
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Laser pointers, batteries & naturalness
Laser pointers, batteries & naturalnessHow to put batteries in a laser pointer? (in a “natural” way) simplified toy model : remember batteries have a + and a - side (for weak electro potential) open your pen (turn upper part) & look inside you see one electrical contact in the middle no contact on the other side in the middle => need to take one contact from the side batteries are + on top AND at the side !!!! so - side needs to touch the inner electrical contact there is only one solution (= ok with naturalness) i.e. + sign up. |
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Hadron Production: Phenomenology and Uncertainties
Hadron Production: Phenomenology and UncertaintiesRajendran Raja Fermilab Review the status of hadronic shower simulation models DPMJET, Mars, Geant4 models Will leave out MCNPX, PHITS and other models. Status of particle production data Difficulties in using shower simulation models in experiments such as MINOS, MiniBoone, Atmospheric neutrino production, Hadron Calorimetry (ILC in particular) Review plans to obtain higher quality data- MIPP Upgrade Ways to use new data directly in simulators—Hadron libraries |
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The JPARC Neutrino Target
The JPARC Neutrino TargetY.Hayato (ICRR, Univ. of Tokyo) for T.Nakadaira & J-PARC n beam-line construction group (I borrowed most of all the transparencies from Nakadaira-san) |
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Comparison HARP data with GEANT4 and MARS Simulations
Comparison HARP data with GEANT4 and MARS SimulationsNUFACT06, UC Irvine 28 August 2006 Stephen Brooks1, Paul Soler2, Kenny Walaron2 1Rutherford Appleton Laboratory 2University of Glasgow/RAL |
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Electrode interactions in cochlear implants Qing Tang and Fan-Gang Zeng
Electrode interactions in cochlear implants Qing Tang and Fan-Gang ZengHearing and Speech Research Laboratory, Department of Otolaryngology, University of California, Irvine RESULTS INTRODUCTION Poster 32 2. Bipolar configuration (Threshold summation with simultaneous stimulation). CI 1 1000Hz 5154Hz 5154 Hz 1000 Hz CI 2 CI 5 1. Monopolar configuration (Threshold summation with simultaneous stimulation). 1). Bipolar stimulation showed less but more complex electrode interaction patterns compared to monopolar stimulation. Subject CI 1 showed no electrode interaction at all electrode separations. Subject CI 2 showed electrode interaction only at the smallest electrode separation. Subject CI 5 showed total electrode interaction at all electrode separations with no phase influence. 2). Stimulation rate did not affect electrode interaction. 1). Interleaved stimulation produced less electrode interaction than simultaneous stimulation. 2). Electrode interaction with interleaved stimulation decreased with increasing time interval between masker and probe electrodes, and disappeared if the time interval is larger than 1293.6 us. 3). Whether the masker and the probe were in phase or out of phase, they produced the same effects. In 3 out of 4 subjects, the electrode interaction between masker and probe reduced the threshold for the probe. MAJOR FINDINGS 1). Electrode interaction is spatial and timing dependent. 2). With simultaneous stimulation, electrode interaction is mainly determined by el... |
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Companding to improve cochlear implants’ speech processing in noise Aparajita Bhattacharya and Fan-Gang Zeng
Companding to improve cochlear implants’ speech processing in noise Aparajita Bhattacharya and Fan-Gang ZengHearing and Speech Research Laboratory, Department of Otolaryngology, University of California, Irvine Methods Phoneme recognition and sentence recognition tests were conducted in quiet and with steady state speech-shaped noise at varying signal to noise ratios. Stimuli were presented at 70 dB SPL and the signal to noise ratios (SNR) varied from -10 dB to 10 dB at 5 dB interval. Subjects : Normal : 9 subjects were tested for the vowel recognition tests, 7 subjects for the consonant recognition tests and 10 subjects for the sentence recognition tests. Out of these 5 subjects participated in both phoneme recognition and sentence recognition tests. Cochlear implant users : 5 Nucleus 24 and 2 Clarion cochlear-implant users also participated in this research. Tests on normal subjects included two types of stimuli, stimuli processed with the companding strategy alone and stimuli processed with companding strategy followed by acoustic simulation of an 8-channel cochlear implant. The phoneme materials included 12 /hvd/ vowels and 20 /aCa/ consonants spoken by a male talker and a female talker. The target sentence material consisted of 250 HINT sentences spoken by a male talker. Discussion Companding enhances spectral peaks but also changes the temporal waveforms. Companding does not improve speech performance in normal-hearing subjects but it does improve performance in normal subjects listening to ... |
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Linguistic and Audiological Factors in Cochlear Implant Speech Perception Michelle AuCoin McGuire, Jeff Carroll, Fan-Gang Zeng
Linguistic and Audiological Factors in Cochlear Implant Speech Perception Michelle AuCoin McGuire, Jeff Carroll, Fan-Gang ZengSUMMARY Compared with normal-hearing native-English listeners, both normal-hearing non-native and cochlear-implant subjects had significantly degraded performance for sentence recognition in noise . Native and non-native subjects showed similar performance in consonant and vowel recognition, but the cochlear-implant subjects performed significantly worse on these tasks. The present results suggest that two different mechanisms lead to sentence recognition in noise: (1) a peripheral mechanism reflects distorted input or acoustic representation of all types of speech stimuli as experienced by cochlear-implant subjects and (2) a central mechanism reflects linguistic interference or lack of linguistic knowledge on the sentence level as experienced by non-native, normal-hearing subjects. Thus far, non-native listener performance does not show a dependence on demographic variables such as native language, age, years in the US, years speaking English, or formal education in English. These results suggest that non-native listeners use a “bottom up” approach to sentence processing. These findings are similar to what Bradlow and Pisoni (1999) observed: Relative to native listeners, non-native listeners experienced more difficulty with lexically hard words even when familiarity with these items was controlled, indicating that non-native word identification is compromised when phonetic differentiation is required. If non-natives have more difficulty at the phonetic level and are... |
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Informational Masking and Spectral Resolution in Cochlear Implant Users Rabia Farooquee1, Ginger Stickney1, Ruth Litovsky2 1Department of Otolaryngology, University of California, Irvine; 2Department of Communicative Disorders, University of Wisconsin, Madison
Informational Masking and Spectral Resolution in Cochlear Implant Users Rabia Farooquee1, Ginger Stickney1, Ruth Litovsky2 1Department of Otolaryngology, University of California, Irvine; 2Department of Communicative Disorders, University of Wisconsin, MadisonSUMMARY AND CONCLUSIONS In the Linguistic Uncertainty experiment, both CI users and NH listeners presented with the implant simulation showed greater masking when the content of the masking sentence varied across trials. These results suggest that, due to their poor spectral resolution, CI users are more susceptible to linguistic interference from a competing talker than NH listeners. In the Talker Uncertainty experiment, NH listeners presented with either the natural speech or implant simulation did not show a difference in performance for the fixed compared to the random talker. Pilot data from a similar study that included more talkers as maskers (a total of 8 talkers plus their reversed speech) shows the same outcome. This suggests that, with reduced spectral resolution, our subjects did not adequately perceive that the talker varied each trial. These results are consistent with talker identification studies in CI users . These results demonstrate how limited and distorted auditory information transmitted from the periphery can interact with and disrupt central information processing mechanisms. Together, masker uncertainty and perceived target/masker similarity interfere with grouping mechanisms and contribute to the poor speech recognition abilities of CI users in realistic listening environments. ACKNOWLEDGEMENTS We are very grateful for the time and dedication our CI and NH listeners have offered for this study. Special thanks to Dr. Fan-Gang ... |
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Web-Enabled Home Health Monitoring
Web-Enabled Home Health MonitoringJakkree Janchoi Professor Mark Bachman , Hector Parra |
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“Flow Characterization in a Microfluidic Compact Disc (CD) Platform for Clinical Diagnosis” SURF-IT Fellow: Bryce Kubo
Mentor: Professor Marc Madou
Kameel Abi-Samra
“Flow Characterization in a Microfluidic Compact Disc (CD) Platform for Clinical Diagnosis” SURF-IT Fellow: Bryce Kubo Mentor: Professor Marc Madou Kameel Abi-Samra |
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