8,322 research outputs found
Robert E. Lee
No full textHead portrait of Gen. Robert E. Lee, issued in 1961 by C.S. Hammond & Co. and distributed by Parade Magazine. From a set also including 4 Civil War portraits and map.https://scholarsjunction.msstate.edu/fvw-prints/1031/thumbnail.jp
A new method for A single semi-conducting nanotube device
Full text linkWe thank J. H. Chung and Prof. J. H. Lee in Northwestern
University and S. K. Kim and Prof. Saeed Mohammadi in
Purdue University and acknowledge Korea Frontier Program
“Nano Mechatronics” and the Brain Korea 21 Project in 2004
for financial support of this work
Influence of Die-Chill Skin on the Formation of Stannate Conversion Coating on AZ91D Magnesium Alloy
No full textProgressive coding of error diffused images
No full textIEEE International Conference on Image Processing, Vol. III, pp. 969-972, Rochester, N.Y
Asplenium uiryeongse C. S. Lee & Kanghyup Lee 2015
No full textAsplenium × uiryeongse C.S. Lee & Kanghyup Lee (2015: 363) Isotype: KOREA, Seoul: Ui-dong, Mt. Bukhansan, 27 August 2013, C. S. Lee & K. Lee LeeCS13082701 (NIBRVP760272; Fig. 1 -2). Note: The holotype is deposited in KH (KHB1533235!).Published as part of Jang, Hyun-Do, Hyun, Chang-Woo, Ryu, Seah & Lee, Sang-Jun, 2022, Type specimens of vascular plants in the herbarium of the National Institute of Biological Resources (II), pp. 229-243 in Phytotaxa 539 (3) on page 230, DOI: 10.11646/phytotaxa.539.3.2, http://zenodo.org/record/636408
Asplenium bimixtum C. S. Lee & Kanghyup Lee ex Y. H. Ha 2020
No full text<i>Asplenium</i> × <i>bimixtum</i> C.S. Lee & Kanghyup Lee ex Y.H. Ha (2020: 295) <p> Replaced synonym: <i>Asplenium</i> × <i>montanum</i> C.S. Lee & Kanghyup Lee (2015: 364), as <i>‘montanus’</i>, non <i>A. montanum</i> Willd. (1810: 342)</p> <p> Isotype: KOREA, Gyeonggi-do: Yeoncheon-gun, Dongmak-ri, Mt. Seongsan, 20 September 2014, <i>C. S. Lee & K. Lee LeeCS14092001</i> (NIBRVP760273; Fig. 1-1).</p> <p> Note: <i>Asplenium</i> × <i>bimixtum</i> (Ha <i>et al.</i> 2020: 295) was published as a replacement name for <i>A. ×montanum</i> C.S. Lee & Kanghyup Lee (Lee <i>et al.</i> 2015: 364), an illegitimate homonym of <i>A. montanum</i> Willd. (Willdenow 1810: 342). Therefore, according to Art. 7.4 of the <i>Code</i> (Turland <i>et al.</i> 2018), the type specimen of <i>A.</i> × <i>bimixtum</i> is the type specimen of <i>A.</i> × <i>montanum</i> C.S. Lee & Kanghyup Lee. The holotype (KHB1533236) and another isotype (KHB1533237) are deposited in KH (!).</p>Published as part of <i>Jang, Hyun-Do, Hyun, Chang-Woo, Ryu, Seah & Lee, Sang-Jun, 2022, Type specimens of vascular plants in the herbarium of the National Institute of Biological Resources (II), pp. 229-243 in Phytotaxa 539 (3)</i> on page 230, DOI: 10.11646/phytotaxa.539.3.2, <a href="http://zenodo.org/record/6364084">http://zenodo.org/record/6364084</a>
OFDM-Based Turbo-Coded Hierarchical and Non-Hierarchical Terrestrial Mobile Digital Video Broadcasting
Full text linkThe feasibility of terrestrial Digital Video Broadcast (DVB) to mobile receivers is studied and turbo coded performance enhancements are proposed. Initially, the MPEG-2 codec is subjected to a rigorous bit error sensitivity investigation, in order to assist in designing various error protection schemes for wireless DVB transmission. The turbo codec is shown to provide Signal-to-Noise Ratio (SNR) performance advantages in excess of 5–6 dB over conventional convolutional coding both in terms of bit error rate and video quality. Our experiments suggested that—despite our expectations—multi-class data partitioning did not result in error resilience improvements, since a high proportion of relatively sensitive video bits had to be relegated to the lower integrity subchannel, when invoking a powerful low-rate channel codec in the high-integrity protection class. Nonetheless, DVB transmission to mobile receivers is feasible, when using turbo-coded OFDM transceivers at realistic power-budget requirements under the investigated highly dispersive fading channel conditions. It is interesting to note furthermore that the 5–6 dB SNR improvement due to turbo coding allows us to invoke for example the double-throughput 16-level Quadrature Amplitude Modulation (16-QAM) mode instead of the standard convolutional-coded 4-QAM mode. This facilitates doubling the bit rate and hence improving the video quality. Index Terms—DVB, DVB-T, error sensitivity, hierarchical video transmission, mobile video broadcast, MPEG-2, OFDM, QAM, terrestrial video broadcast, wireless video broadcast
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