240 research outputs found
Test energy minimization for C-testable ILAs
No full text[[abstract]]We consider energy consumption during testing for C-testable iterative logic arrays (ILAs). We show that the cell test sequences in the ILA have a property of repetition and ensure that the test energy depends on the order of the test patterns, which is obvious for random logic, but is not for ILAs due to its iteration property. The time complexity for obtaining the transition energy of all possible pattern sequences is reduced from O((XNC2)-N-2-C-2) to O((XC2)-C-2), where X, N, and C represent the test length, array size, and cell complexity, respectively. We formulate the problem of finding the optimal test sequence, as a shortest-path problem. Using the obtained test sequence the total energy consumption is minimized, and the transition power is within the design specification. The time complexity is independent of the array size.[[fileno]]2030108010059[[department]]電機工程學
ILAS LAGLOBAL Seminar Series: Talking about Objects of Knowledge
No full textInstitute of Latin American Studies : 4 November 2020, 5.30pm - 7.30pm : Seminar Online : Professor Helen Cowie (University of York), author of Conquering Nature in Spain and Its Empire, 1750–1850 (Manchester, 2011) and Exhibiting Animals in Nineteenth-Century Britain, (Palgrave, 2014). Convenor: Professor Mark Thurner (ILAS) ILAS LAGLOBAL AUTUMN 2020 WEBINAR SERIES.pdf Read more HER
ILAS LAGLOBAL Seminar Series: Talking about Objects of Knowledge
No full textInstitute of Latin American Studies : 21 October 2020 17h30-19h30 : Seminar Online : Professor Jorge Cañizares-Esguerra (University of Texas at Austin), author of How to Write the History of the New World, (Stanford, 2001) and Nature, Empire and Nation (Stanford, 2006). Convenor : Professor Mark Thurner (ILAS) ILAS LAGLOBAL AUTUMN 2020 WEBINAR SERIES.pdf See more HER
Abstracts of the 8. ILAS conference
No full textCentro de Informacion y Documentacion Cientifica (CINDOC). C/Joaquin Costa, 22. 28002 Madrid. SPAIN / CINDOC - Centro de Informaciòn y Documentaciòn CientìficaSIGLEESSpai
ILAS LAGLOBAL Seminar Series: Talking about Objects of Knowledge
No full textLondon : 7 October 2020 17h30-19h30 : Seminar - Venue Online : Professor Miruna Achim (Universidad Autonoma Metropolitana, Mexico City), author of From Idols to Antiquity : Forging the National Museum of Mexico (Nebraska, 2017). Convenor : Professor Mark Thurner (ILAS) Read more : https://ilas.sas.ac.uk/events/event/2281
Validation of NO<sub>2</sub> and HNO<sub>3</sub> measurements from the Improved Limb Atmospheric Spectrometer (ILAS) with the version 5.20 retrieval algorithm
No full textInternational audienceThe Improved Limb Atmospheric Spectrometer (ILAS) on board the Advanced Earth Observing Satellite (ADEOS) measured nitrogen dioxide (NO 2) and nitric acid (HNO 3) profiles from November 1996 to June 1997 at high latitudes in both hemispheres. The ILAS NO 2 profiles (version 5.20) are compared with those obtained by balloon-borne and satellite measurements to validate ILAS NO 2 data. Comparisons with balloon-borne measurements indicate that ILAS NO 2 at 25-30 km has a positive bias of 0.3-0.4 ppbv (6-11%). The random difference in NO 2 at 25-30 km is 0.2-0.3 ppbv (3-9%). The random error in the ILAS NO 2 measurements is larger than 100% below 20 km and above 45 km, where the NO 2 mixing ratios were less than 1.0 ppbv. It is possible that ILAS NO 2 values were lowered by optically thick aerosols with aerosol extinction coefficients at 780 nm of greater than 0.001 km À1. The lack of diurnal correction along the line of sight contributes to the positive bias in the ILAS NO 2 values below 25 km. Agreement of the ILAS NO 2 values with those by the Polar Ozone and Aerosol Measurement (POAM) II instrument is within 10-30% at 25-35 km. The agreement with the Halogen Occultation Experiment (HALOE) is as good as ±10% at 25-40 km. ILAS HNO 3 (version 5.20) agrees with balloon-borne HNO 3 to within 0.1 ppbv (0-1%), and the random difference is within 10% at 25-30 km
Validation of CFC-12 measurements from the Improved Limb Atmospheric Spectrometer (ILAS) with the version 6.0 retrieval algorithm
No full text[1] Measurements of CFC-12 were made by the Improved Limb Atmospheric Spectrometer (ILAS) between 57degreesN and 72degreesN in the Northern Hemisphere and between 64degreesS and 89degreesS in the Southern Hemisphere. ILAS was launched on 17 August 1996 on board the Advanced Earth Observing Satellite (ADEOS). The ILAS validation balloon campaigns were carried out from Kiruna, Sweden (68degreesN, 21degreesE), in February and March 1997 and from Fairbanks, Alaska (65degreesN, 148degreesW), in April and May 1997. During these validation balloon campaigns, CFC-12 was measured with the in situ instruments ASTRID, BONBON, and SAKURA and the remote sensing spectrometers MIPAS-B, FIRS-2, and MkIV. ILAS version 6.0 CFC-12 profiles obtained at the nearest location to the validation balloon measurement are compared with these validation balloon measurements. The quality of ILAS CFC-12 data processed with the version 6.0 algorithm improved significantly compared to previous versions. Low relative differences between ILAS CFC-12 and the correlative measurements of about 10% were found between 13 and 20 km. The comparison of vertical profiles shows that ILAS CFC-12 data are useful below about 20-22 km inside the vortex and below about 25 km outside the vortex. However, at greater altitudes the relative percentage difference increases very strongly with increasing altitude. Further, correlations of CFC-12 with N2O show a good agreement with the correlative measurements for N2O values of N2O > 150 ppbv. In summary, ILAS CFC-12 data are now suitable for scientific studies in the lower stratosphere
Validation and data characteristics of water vapor profiles observed by the Improved Limb Atmospheric Spectrometer (ILAS) and processed with Version 5.20 algorithm
No full text[1] Vertical profiles of water vapor concentration at high latitudes (57-72 degreesN; 64-89 degreesS) were observed by the Improved Limb Atmospheric Spectrometer (ILAS) solar occultation sensor aboard the Advanced Earth Observing Satellite (ADEOS). These measurements were made continuously from November 1996 through June 1997 with some additional periods in September to October 1996. A validation study of the water vapor data processed with the version 5.20 ILAS retrieval algorithm is presented in this paper. Uncertainty and general characteristics of the ILAS water vapor measurements are briefly reviewed. Comparisons are made with data obtained by (1) the ILAS validation balloon campaigns at Kiruna, Sweden and at Fairbanks, Alaska; (2) the aircraft measurements under the Photochemistry of Ozone Loss in the Arctic Region in Summer (POLARIS) campaign; and (3) available satellite measurements of the version 19 Halogen Occultation Experiment (HALOE) and the version 6 Stratospheric Aerosol and Gas Experiment II (SAGE II). The agreement between ILAS water vapor and all independent reliable correlative measurements in the altitude region of 15-60 km is better than 10% for the majority of cases and better than 20% for all comparisons, with the exception of some isolated cases detailed in this paper. Climatological comparisons of ILAS data with Upper Atmosphere Research Satellite (UARS) climatology and HALOE data show the overall consistency of ILAS water vapor data considering the known features of atmospheric circulation. The characteristics of ILAS measurements, i.e., high sampling frequency in polar latitudes with high vertical resolution along with the good data quality, make the ILAS water vapor data set valuable for various polar stratospheric research applications
A Unitary Approach to Speed Sensorless Induction Motor Field Oriented Drives Based on Various Model Reference Schemes
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