108,573 research outputs found
Dr Chewon Kim et Godfrey St. G. M. Gompertz, Korean Ceramics, Faber and Faber, Londres, 1961
No full textDavid M. P. Dr Chewon Kim et Godfrey St. G. M. Gompertz, Korean Ceramics, Faber and Faber, Londres, 1961. In: Arts asiatiques, tome 10 fascicule 1, 1964. pp. 108-110
Performance analysis of M-QAM scheme combined with multiuser diversity over Nakagami-m fading channels
No full textIn this paper, we consider an M-ary quadrature amplitude modulation (M-QAM) scheme combined with multiuser diversity over Nakagami-m fading channels. Assuming that delayed but error-free signal-to-noise ratio (SNR) feedback is available, we derive closed-form formulas for the average transmission rate and the average bit error rate (BER), which are also shown to be generalizations of many previous results. Through numerical studies and simulations, we check the validity of our analysis. In addition, we investigate the impact of the Nakagami fading parameter m and feedback delay on system performance.This research was supported by the MIC (Ministry of Information and Communication), Korea, under the ITRC (Information Technology Research Center) support program supervised by the IITA (Institute of Information Technology Assessment).
Y. Kim and G. U. Hwang are with the Department of Mathematical Sciences and Telecommunication Engineering Program, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea (Email: jd [email protected]; [email protected])
The Mx/G/1 queue with queue length dependent service times
No full textWe deal with the MX/G/1 queue where service times depend on the queue length at the service initiation. By using Markov renewal theory, we derive the queue length distribution at departure epochs. We also obtain the transient queue length distribution at time t and its limiting distribution and the virtual waiting time distribution. The numerical results for transient mean queue length and queue length distributions are given.Bong Dae Choi, Yeong Cheol Kim, Yang Woo Shin, and Charles E. M. Pearc
Neotrombicula (Neotrombicula) kwangneungensis Shin, Kim, Lee, Yoon and Shim 1990
No full textNeotrombicula (Neotrombicula) kwangneungensis Shin, Kim, Lee, Yoon and Shim, 1990: PALPublished as part of Nielsen, David H., Robbins, Richard G. & Rueda, Leopoldo M., 2021, Annotated world checklist of the Trombiculidae and Leeuwenhoekiidae (1758 - 2021) (Acari: Trombiculoidea), with notes on nomenclature, taxonomy, and distribution, pp. 1-243 in Zootaxa 4967 (1) on page 167, DOI: 10.11646/zootaxa.4967.1.1, http://zenodo.org/record/474551
Symplocarpus koreanus J. S. Lee, S. H. Kim & S. C. Kim 2021
No full textSymplocarpus koreanus J.S. Lee, S.H. Kim & S.C. Kim (2021: 2) Isotype: KOREA, Gangwon-do: Chuncheon-si, Sabuk-myeon, Goseong-ri, Mt. Yonghwasan, 21 March 2020, S. C. Kim 200321500 (NIBRVP815477; Fig. 1 -23). Paratypes: KOREA, Gyeonggi-do: Gapyeong-gun, Buk-myeon, Baekdun-ri, Mt. Yeoninsan, 3 May 2013, W. B . Lee s.n. (NIBRVP517078); Gapyeong-gun, Oeseo-myeon, Mt. Hwayasan, 26 June 2007, W. K. Paik VP-KB-377062-0173 (NIBRVP815507); Gapyeonggun, Sang-myeon, Haenghyeon-ri, Mt. Chungnyeongsan, 31 March 2012, J. H . Kim, Y. J. Kim & I. S. Yoon KIMJH12006 (3 sheets, NIBRVP355001); Gapyeong-gun, Sang-myeon, Haenghyeon-ri, Mt. Chungnyeongsan, 29 March 2016, G. H . Nam, J. H. Kim & J. K. Hong L 16001 (NIBRVP550794); Gapyeong-gun, Seorak-myeon, Mt. Yumyeongsan, 4 April 2008, B. K . Kwon 080404-375 (NIBRVP532404); Gapyeong-gun, Seorak-myeon, Mt. Yumyeongsan, 4 April 2008, G. Y . Chung ANH-en-080404- 001 (NIBRVP197125); Hanam-si, Baealmi-dong, Mt. Geomdansan, 3 April 2007, J. O . Hyun, H. K. Park & J. A. Eom VP-NAPI-377054-092 (NIBRVP111433); Namyangju-si, Hwado-eup, Mt. Cheonmasan, 15 April 2007, W. K . Paik VP-KB-377061-0133 (NIBRVP815506); Namyangju-si, Hwado-eup, Mt. Cheonmasan, 22 March 2013, Song et al. s.n. (NIBRVP464822); Namyangjusi, Onam-eup, Onam-ri, Mt. Cheonmasan, 6 April 2009, G. H . Nam, M. H. Kim & J. H. Lee VS 15 (NIBRVP206699); Namyangjusi, Onam-eup, Onam-ri, Mt. Cheonmasan, 6 April 2009, G. H . Nam, M. H. Kim & J. H. Lee VS16 (2 sheets, NIBRVP206700); Namyangju-si, Mt. Chungnyeongsan, 28 March 1999, S. P . Hong & K. W. Park 411 (NIBRVP102296). Gangwon-do: Cheorwon-gun, Geunnam-myeon, Mt. Gwangdeoksan, 12 May 1997, S. P . Hong & H. S. Choi 99 (NIBRVP102297); Donghae-si, Bugok-dong, Mita Temple, 26 April 2011, G. H . Nam & W. J. Jeong SHY2-34 (NIBRVP284290); Gangneung-si, Wangsan-myeon, Mt. Hwaranbong, 30 April 2009, J. H . Kim & H. J. Kim VP-KB-0904-0071 (NIBRVP318582); Hwacheon-gun, Mt. Baekjeoksan, 24 May 2000, K . Ch. Yang & J. D. Jung s.n. (NIBRVP102304, NIBRVP102305); Hwacheon-gun, Mt. Baekjeoksan, 3 August 2000, J. H . Kim & D. K. Kim 49 (NIBRVP102307); Hwacheon-gun, Sanae-myeon, Mt. Gwangdoeksan, 7 April 2009, G. H . Nam, M. H. Kim & J. H. Lee VS24 (2 sheets, NIBRVP206708); Hwacheon-gun, Sanae-myeon, Mt. Gwangdoeksan, 7 April 2009, G. H . Nam, M. H. Kim & J. H. Lee VS25 (2 sheets; NIBRVP206709). Chungcheongbuk-do: Danyang-gun, Gagok-myeon, Mt. Sobaecksan, 17 May 1999, C. W . Park, H. W. Lee & J. Koh 10315 (NIBRVP815505); Danyang-gun, Gagok-myeon, Mt. Sobaeksan, 20 April 2007, G. Y . Chung ANH-en-070420-013 (NIBRVP121631). Jeollabuk-do: Jangsu-gun, Gyenam-myeon, Jangan-ri, 21 September 1997, B. Y . Sun & C. H. Kim 10361 (NIBRVP815504); Jangsu-gun, Gyenam-myeon, Mt. Jangansan, 19 May 2007, B. Y . Sun 2271 (NIBRVP128343); Jangsu-gun, Gyenam-myeon, Mt. Jangansan, 19 June 2009, J. K . Ahn, S. J. Lee & Y. W. Lee CH 40006 (NIBRVP266477); Jangsu-gun, Gyenammyeon, Mt. Jangansan, 19 June 2009, J. K . Ahn, S. J. Lee & Y. W. Lee CH 40239 (NIBRVP266707); Jinan-gun, Jucheon-myeon, Daebul-ri, Mt. Unjangsan, without date, C. H . Kim & S. H. Lee 50051 (3 sheets, NIBRVP537859). Gyeongsangnam-do: Geochanggun, Buksang-myeon, Mt. Deogyusan hyangjeokbong-satgatgoljae, 31 May 2006, B. Y . Sun 1577 (4 sheets, NIBRVP119643). Note: The holotype is deposited in SKK.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 237, DOI: 10.11646/phytotaxa.539.3.2, http://zenodo.org/record/636408
WIDEBAND LNA USING A NEGATIVE g(m) CELL FOR IMPROVEMENT OF LINEARITY AND NOISE FIGURE
No full textA differential common gate low noise amplifier (LNA) has been widely used for a wideband LNA. However, it has poor linearity due to a nonlinear transconductance in a MOSFET and poor noise performances from the common gate configuration. We propose a differential common gate LNA with a negative g(m) cell for the improvement of the linearity and noise figure. The cell comprises cross coupled transistors instead of a current source. The negative g(m) cell creates the opposite phased harmonic, canceling the distortion. The noise figure is improved by canceling the noise from the common gate transistors through the negative g(m) cell. The LNA is fabricated in 0.13 mu m RF CMOS. The LNA has the bandwidth of 0.7 similar to 3.5 GHz frequency and has provided the expected characteristics for linearity and noise figure.X1112sciescopu
Khoo Kay Kim, professor of Malaysian history : a biobibliometric study
No full textPresents an analysis of the publication productivity, authorship pattern, channels of communication, journal preference and language preference of Professor Dato' Khoo Kay Kim, Professor of Malaysian History in the University of Malaya, Kuala Lumpur. The results of this biobibliometric study indicate that he can be a role model for future Malaysian historians to emulate his various achievements especially in the field of history education
M/NEM devices and uncertainty quantification
No full textSubmission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2020-05-01The student, Namjung Kim, accepted the attached license on 2018-01-19 at 10:43.The student, Namjung Kim, submitted this Dissertation for approval on 2018-01-19 at 11:49.This Dissertation was approved for publication on 2018-01-23 at 13:14.Recent advances in computing power have facilitated the use of computational simulations as design guidelines in a range of fields including the semiconductor industry, biosensors, microfluidic devices, and even nano-sized devices. Although simulation can capture the physics behind the experiment, deterministic simulations with parameters derived from least-square fitting are significantly limited for understanding output distributions from experiments. This deviation between computational simulation and experiment may arise for a number of reasons: the stochastic nature of design parameters, external environmental fluctuations, measurement noise, and so forth. These are called uncertainties. Understanding the effect of these uncertainties is important in manufacturing processes, because manufacturing processes incorporate multi-scale and multi-physics sub-steps, with uncertainties in inputs accumulated and propagated through the sub-steps, resulting in significant deviations in the performance of final products.
A systematic approach to understanding the variations in the output from various uncertainty sources is called uncertainty quantification (UQ). To integrate uncertainty quantification fully into the design process, the sources of uncertainty must be identified and quantified; then, the uncertainty needs to be characterized and parameterized to create a statistical model. The parameterized statistical model is fed into a physics-based deterministic model (e.g., a finite element model) to quantify the deviations in the final products arising from the uncertainty parameters. By understanding the effect of stochastic parameters in inputs as well as manufacturing processes, computational simulations can provide more reliable design guidelines across a range of manufacturing fields.
This dissertation consists of two parts. The first part describes how simulation can assist in understanding experimental results. The specific physical systems considered in this dissertation are a MEMS-based resonator (Chapter 2) and a microfluidic device (Chapter 3). The results show that simulation is a powerful tool for describing details of experimental results that cannot be explained easily due to the complexity of the systems. However, distinctive discrepancies between the results from current computational predictions and experiments still exist, especially when various uncertainties are present. Therefore, the second part of this dissertation is devoted to developing a systematic approach to modeling stochastic input variables through experimental data, and describing how this can be incorporated into a modeling framework.
This dissertation suggests a systematic approach to developing a finite element model that can estimate the mechanical properties of final products with spatial uncertainties in the 3D printing process (Chapter 4), and those arising from variations in microstructure in the die-casting process (Chapter 5). Those input uncertainties are extracted from the images of final products. The data-driven modeling approach with Gaussian process is proposed to consider the probabilistic behavior of uncertainties. The realizations sampled from the calibrated Gaussian process model are incorporated into the deterministic model, generating more realistic simulation model. The systematic approach developed in this study can assist in understanding the effect of input uncertainties on the variance of the mechanical performance of final products from 3D printing and die-casting. This approach will be beneficial to other manufacturing processes where input uncertainties are important.DSpace SAF Submission Ingestion Package generated from Vireo submission #12016 on 2018-08-31 at 17:24:37Made available in DSpace on 2018-09-04T20:46:44Z (GMT). No. of bitstreams: 3
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Previous issue date: 2018-01-23Embargo set by: Seth Robbins for item 107335
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FIGURE 1. Eriobotrya shanense D.H. Kang, H.G. Ong & Y.D. Kim A. Flowering branch B. Leaf blade C–D. Stipules E. Bract F–G. Flower abaxial and adaxial view H–I. Petals J. Flower longitudinal section showing the androecium and gynoecium K. Stamen L. Styles and exposed ovary M. Ovary cross section N. Fruiting branch O–P. Fruit cross and longitudinal section. A–M in A new broad-leaved species of loquat from eastern Myanmar and its phylogenetic affinity in the genus Eriobotrya (Rosaceae)
No full textFIGURE 1. Eriobotrya shanense D.H. Kang, H.G. Ong & Y.D. Kim A. Flowering branch B. Leaf blade C–D. Stipules E. Bract F–G. Flower abaxial and adaxial view H–I. Petals J. Flower longitudinal section showing the androecium and gynoecium K. Stamen L. Styles and exposed ovary M. Ovary cross section N. Fruiting branch O–P. Fruit cross and longitudinal section. A–M. from Kim et al. MM-6026 (holotype HHU). Illustration by Ye-Seul Jang.Published as part of Kang, Dae-Hyun, Ong, Homervergel G., Lee, Jung-Hoon, Jung, Eui-Kwon, Kyaw, Naing-Oo, Fan, Qiang & Kim, Young-Dong, 2021, A new broad-leaved species of loquat from eastern Myanmar and its phylogenetic affinity in the genus Eriobotrya (Rosaceae), pp. 279-290 in Phytotaxa 482 (3) on page 283, DOI: 10.11646/phytotaxa.482.3.6, http://zenodo.org/record/478458
Families of the characters of the cyclotomic Hecke algebras of G(de,e,r)
No full textAbstractMotivated by the work of Lusztig on the families of Irr(W) for the Weyl group W of any type, especially for the types Br and Dr, we described in the article [M. Broué and S. Kim, Familles de caractères des algèbres de Hecke cyclotomiques, Adv. Math. 172 (2002) 53–136] the families of the characters of G(e,1,r) and G(e,e,r), which are the blocks of the cyclotomic Hecke algebras over an appropriate ring called “Rouquier ring.” The results coincide with the results of Lusztig on the Weyl groups of types Br and Dr when specializing the parameters of the Hecke algebras. In this paper, generalizing this work to the whole series of G(de,e,r) which is a normal subgroup of G(de,1,r) of index e, we extend the results of Broué and Kim, op. cit
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