• Journal of Microbiology and Biotechnology
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• v.17 no.6
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• pp.934-944
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• 2007

Paenibacillus polymyxa E681 is known to be able to suppress plant diseases by producing antimicrobial compounds and to promote plant growth by producing phytohormones, and secreting diverse degrading enzymes. In spite of these capabilities, little is known regarding the flow of information from the bacterial strain to the barley roots. In an attempt to determine the flow of information from the bacterial strain to barley roots, the strain was grown in the presence and absence of barley, and two-dimensional polyacrylamide gel electrophoresis (2D-PAGE) and MALDI-TOF mass spectrometry were used. 2D-PAGE detected approximately 1,000 spots in the cell and 1,100 spots in the supernatant at a pH 4-10 gradient. Interestingly, about 80 spots from each sample showed quantitative variations. Fifty-three spots from these were analyzed by MALDI-TOF mass spectrometry and 28 proteins were identified. Most of the cytosolic proteins expressed at higher levels were found in P. polymyxa E681 cells grown in the presence of barley rather than in the absence of barley. Proteins detected at a lower level in the surpernatant of P. polymyxa E68l cells grown in the presence of barley were lipoprotein, glucose-6-phosphate 1-dehydrogenase, heat-shock protein HtpG, spermidine synthase, OrfZ, ribonuclease PH, and coenzyme PQQ synthesis protein, and flagellar hook-associated protein 2 whereas proteins detected at a higher level in the surpernatant of P. polymyxa E681 cells grown in the presence of barley included D-alanyl-D-alanine ligase A, isopentenyl-diphosphate delta-isomerase, ABC transporter ATP-binding protein Uup, lipase. Many of the proteins belonging to plant-induced stimulons are associated with biosynthetic metabolism and metabolites of proteins and transport. Some of these proteins would be expected to be induced by environmental changes resulting from the accumulation of plant-secreted substances.

• Journal of Convergence for Information Technology
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• v.11 no.6
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• pp.154-161
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• 2021

This study analyzed the characteristics of the presence of multiple chronic diseases (MCDs) in older adults who transferred from long-term care hospitals (LTCHs) to emergency departments (EDs). According to the data from the national emergency department information system from January 1, to December 31, 2019, the number of older adults transferred from LTCHs to the ED due to chronic diseases was 13,608. Among those who MCDs, 79.9% were over 75 years old, and 74.0% were hospitalized for MCDs. The length of stay in the ED differed according to the presence of MCDs (P<0.001). As for the prevalence of MCDs, the odds ratio (OR) of the ED and in the hospitalized patients was high in Gwangju (OR 8.899 vs. 8.142) and Jeonbuk (OR 13.865 vs. 10.676). As described above, the characteristics of patients regarding the presence of MCDs varied according to age and region.

• Journal of Creative Information Culture
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• v.5 no.1
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• pp.1-13
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• 2019

This study investigated how general blended learning strategies and flipped-learning instructional strategy affect college students' social presence and group cohesion. The main results of this study were summarized as follows. First, the group of flipped-learning instructional strategy was more effective in college students' social presence than general blended learning. Second, it was found that groups using flipped-learning instruction strategy had more positive effects on improving group cohesion among college students than those using the general blended learning instructional strategy. The results of this study can influence the identification and verification of the main components to be considered when using flipped-learning instruction strategy in blended learning environment. The results of this study can influence the identification and verification of the main components to be considered when using flipped-learning instruction strategy in blended learning environment.

• Proceedings of the Korean Information Science Society Conference
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• 2008.06a
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• pp.239-240
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• 2008

• Communications of the Korean Institute of Information Scientists and Engineers
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• v.28 no.8
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• pp.26-37
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• 2010

• The Journal of Korean Institute of Communications and Information Sciences
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• v.18 no.7
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• pp.1009-1017
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• 1993

The Robust Adaptive Servo Controller in this paper has an error-corrected and robust structure which guarantees asymptotic regulation and tracking in the presence of bounded parameter perturbations. The adaptive mechanism tunes the controller parameters such that a quadratic performance index is minimized. Through the speed and position control of the DC servo model with computer simulations, the minimum variance controller parameters are robust with respect to finite parameter perturbation and bounded disturbance.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.21 no.1
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• pp.59-66
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• 1996

In this paper, we present a new effective algorithm for element failure compensation of Generalized Sidelobe Canceller (GSC). While the GSC is well formulated, little works have been done on array element compensation in the presence of faulty elements. Element failure changes the problem of a linearly equally spaced array into that of an unequally spaced array. Typical research approaches have been directed at using search techniques to optimize unequally spaced arrays. The proposed algorithm matches the linear constraint conditions and the general shape of the desired beam pattern at the expense of an increase of beam-width in the overall main lobe. Numerical results are included to demonstrate the capability of compensation for various situations.

• Proceedings of the Korea Information Processing Society Conference
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• 2006.05a
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• pp.1131-1134
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• 2006

프리젠스(Presence) 서비스는 SIP(Session Initiation Protocol) 확장 서비스의 하나로서 사용자들 사이에 현재 위치의 정보나 온라인 정보 등과 같은 통신 상태의 변화를 등록(Subscription)과 Notification을 통해서 제공한다. 이때 프리젠스 정보가 변화될 때마다 전체 프리젠스 문서를 이용하여 업데이트하는 기존의 Publication 및 Notification 방식을 사용할 경우 프리젠스 정보 전송에 상당한 오버헤드가 발생한다. 이를 해결하기 위해 본 논문에서는 부분 Publication 및 Notification 방식을 사용하여 변화되는 최신 프리젠스 정보만으로 구성된 부분 프리젠스 문서를 메시지 바디에 포함시켜 전달하도록 함으로써 기존의 방식에 비해 효율적인 프리젠스 관련 정보 전송이 가능한 새로운 프리젠스 서비스를 구현하였다.

• Journal of information and communication convergence engineering
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• v.5 no.4
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• pp.333-338
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• 2007

In this paper we propose a new structure of the long code MMSE receiver with pilot channel, which maintians excellent symbol detection capability even in the presence of Rayleigh fading. We explain analytically how the stability of the receiver weight vector, which is critical to the system performance, can be achieved by compensating the error signal as well as received signal vector distorted by fading channel. Computer simulation shows while maintaining better performance than the conventional matched filter receiver, the proposed long code MMSE receiver can extend its period up to $16{\times}T_b$ in a fading environment.

• Journal of the Korean Data and Information Science Society
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• v.22 no.3
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• pp.555-563
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• 2011

Osteoarthritis (OA) and rheumatoid arthritis (RA) are most popular types of arthritis in Korea. This study compared health-related quality of life (HRQoL) of homedwelling people with OA and RA in Korea. Data were drawn from the Korean nationwide representative survey. Subjects were 3,352 people with arthritis over 19 years of age (2,953 OA respondents and 399 RA respondents). Good HRQoL in OA respondents was dierentiated with limitation of mobility, perceived health status, age, economic status, presence of arthralgia, gender, medical coverage, and educational level. Good HRQoL in RA respondents was dierentiated with limitation of mobility, perceived health status, economic status, educational status, and presence of arthralgia. In conclusion, HRQoL and predictors of good HRQoL among people with arthritis diers for OA or RA. These results can be of use in development of health programs and clinical interventions for community-dwelling people with arthritis.