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南基桓,沈在燮 충북대학교 엽연초연구소 1974 煙草硏究 Vol.2 No.-
This experiment was carried out in order to observe the effects three elements of fertilizer(N.,P.,K.,) on the infection of tobacco brown spot disease. The plots were designed by split plot method with 8 treatment (A: check, B: 50% added applied N., P. and K., C: 50% subatracted applied three elements., D: 50% added applied N., E: 50% added applied P., F: 50% added applied P., G: no applied P., G: an applied P: and H: no applied P.). Check is N 14kg P2O5 21kg and K3O 28kg per 10 are respectively. Y.S.A was employed for sample variety and transplanted on 15 May. The results obtained as follow; 1) There were no differences among the plots (treatments) during the early growing stages. 2) The plot of 1½N, no K. and 1½N.P.K. have shown larger number of lesions than the check respectively. 3) The plot of 1/2 N.P.K.(C), 1½K(F), and no P.(G) have shown almost no differences in the rate of disease occurence as compared with check (A). In conclusion, excess application of N. and defficiency of K. seemed to be related with tobacco brown spot disease infection.
HMM을 이용한 연속 음성인식 시스템의 화자적응화에 관한 연구
심장엽,김상범,김주성,김수훈,이영재,이종진,허강인 동아대학교 공과대학 부설 한국자원개발연구소 1995 硏究報告 Vol.19 No.2
It is hard to collect sufficient speech data for training a speaker-dependent (SD) model from the same speaker. In contrast, to trains a speaker-independent (SI) model need not collect a large amount of speech data per speaker but from many speakers. Speaker-adaptation (SA) is an additional training technique from SI model by a small amount of adaptation speech. It has proved to be a powerful tool for achieving good recognition performance without the high cost of SD training. In this study, a speaker adaptation algorithm (MAPE) which trains it by every utterance sequentially without hand-labelling is introduces. The hand-labelling is performed automatically by Concatenation training and Viterbi-segmentation. The secuential-training is performed by MAPE(Maximum A Posteriori probability Estimation). We can train it using any small amount of adaptation speech data. For newspaper editorial continuous speech, the recognition rates of adaptation of HMM was 62.5% respectively which is approximately 32.5% improvement over that of unadapated HMM.
Synthesis of triarylamine-based alternating copolymers for polymeric solar cell
Lee, J.,Cha, H.,Kong, H.,Seo, M.,Heo, J.,Jung, I.H.,Kim, J.,Shim, H.K.,Park, C.E.,Kim, S.Y. IPC Science and Technology Press 2014 Polymer Vol.55 No.19
Two donor-acceptor alternating copolymers based on electron-rich triarylamine, di(1-(6-(2-ethylhexyl))naphthyl)phenylamine (DNPA), and electron-deficient benzothiadiazole and benzoselenadiazole derivatives were designed and synthesized via Suzuki coupling reaction. The resulting triarylamine-based alternating copolymers PDNPADTBT and PDNPADTBS showed good solubility in common organic solvents and good thermal stability. The optical band gaps determined from the onset absorption were 1.93 and 1.81 eV, respectively. By introducing the naphthalene ring into the triarylamine, copolymers had relatively deep HOMO energy levels of -5.48 and -5.45 eV, which led to a high open circuit voltage (V<SUB>oc</SUB>) and good air stability for photovoltaic application. Bulk heterojunction solar cells were fabricated with a structure of ITO/PEDOT-PSS/copolymers-PC<SUB>70</SUB>BM/LiF/Al by blending the copolymer with PC<SUB>70</SUB>BM. Both blend systems showed remarkably high V<SUB>oc</SUB> near 0.9 V, and the highest performance of 2.2% was obtained from PDNPADTBT, with V<SUB>oc</SUB> = 0.88 V, J<SUB>sc</SUB> = 7.4 mA/cm<SUP>2</SUP>, and a fill factor of 34.4% under AM 1.5 G.