Baseline sensitivity of Scirpus juncoides and Monochoria vaginalis populations to HPPD inhibitors in Korea

박인곤,Mirjalol Umurzokov,Bo Aung Bo,신호영,조광민,박기웅,이증주 한국잔디학회 2022 Weed & Turfgrass Science Vol.11 No.2

The study was conducted to evaluate the baseline sensitivity index (BSI) of Scirpus juncoides and Monochoria vaginalis populations to 4-hydroxyphenylpyruvate dioxygenase (HPPD) inhibitors, benzobicyclon, and mesotrione and to estimate the potential risk of the HPPD inhibitor resistance in paddy fields in Korea. The seeds of matured S. juncoides and M. vaginalis biotypes were collected from a total of 105 sites and a whole plant dose-response test was performed. Nonlinear fit curve (DoseResp) analysis revealed that GR50 values of S. juncoides biotypes ranged from 9.6 to 16.5 g a.i. ha-1 to mesotrione and 13.1 to 26.4 g a.i. ha-1 to benzobicyclon. BSI was 1.72 and 2.01 for mesotrione and benzobicyclon respectively. The GR50 values of M. vaginalis populations ranged from 10.9 to 16.3 g a.i. ha-1 to mesotrione and 11.7 to 21.1 g a.i. ha-1 to benzobicyclon. BSI was 1.48 for mesotrione and 1.78 for benzobicyclon. No shift in mesotrione and benzobicyclon sensitivity was observed suggesting that these HPPD herbicides can still be used very ffectively to control S. juncoides and M. vaginalis populations in rice fields in South Korea. However, we strongly suggest that constant monitoring and baseline sensitivity studies need to be conducted continuously to detect the evolution of herbicide-resistant weed biotypes.

14.6, 60 및 200 A GeV 원자핵-원자핵 중심 충돌 核반응 연구

박인곤,송진섭,남상탁,윤천실 慶尙大學校 기초과학연구소 1989 基礎科學硏究所報 Vol.5 No.-

The results of a study of central collisions of ^16O nuclei with the heavy elements of nuclear emulsion(^107Ag, ^80Br) at 14.6, 60 and 200 GeV/n are compared with proton-emulsion data at equivalent energy. The multiplicity of produced charged secondaries for the ^16O interactions increases with energy faster than for proton projectiles, but the ratio of the mean meson multiplicity to the number of wounded nucleon is reasonably consistent with the prediction of superposition models. At 200 GeV/n, the central particle pseudorapidity density is found to be 66±2 for events with multiplicities exceeding 200.

Internet Dependency of Korean Students Compared to That of American Students

박인곤 한국기독교교육정보학회 2012 Journal of Christian education information tech Vol.0 No.21

The Internet has influenced on contemporary human lives in various aspects. After the advent of the Internet in 1960’s, the popularity of the medium flourished in 1990’s. One of the Internet's important influences is the tendency of excessive usage. College students are more inclined to immoderate use of the Internet. Due to the excessive usage of the Internet many dysfunctional effects have been shown to the college students in the educational fields. From this cognition the researcher examined college students' Internet dependency of Korean students compared to that of American students. An email survey was conducted and collected from 377 Korean and American university students. It was examined to see how Internet dependent and non-dependent groups were associated with their Internet use. How the Korean and American groups show the differences between Internet dependents and non-dependents was also studied. The results showed that the different demographic variables have different Internet dependencies.

청소년의 인터넷 이용실태와 부모- 자녀간의 의사소통실태 상관관계 분석

박인곤 한국기독교교육정보학회 2007 기독교교육정보 Vol.16 No.-

Abstract The Relationship between Internet Age of Adolescents and Korean Parents-Adolescents Communication Style In-Kon Park (BK21 Research Professor, Sungkyunkwan University) This study analyzed the uses and gratifications of the Internet by Korean adolescents and parents-adolescents communication style. The subjects were 187 adolescents who are attending in a church in Seoul. Factor analysis, t-test, one-way ANOVA, and correlation were employed to analyze the data. The findings of this study were as follows. Factor analysis reduced the variables into 3 categories for the Internet gratifications, and 3 for the parents-adolescents communication styles. All 6 categories are entertainment-escape, information-seeking and surveillance, interpersonal and social communication, positive-communication style, passive- communication style, negative-communication style. T-test showed male students are more oriented for entertainment-escape gratification and passive-communication style than female students. High school students are more oriented for using the Internet in the information-seeking and surveillance purpose than middle school students. One-way ANOVA showed the Internet heavy users used the Internet for entertainment-escape and interpersonal and social communication purpose. Finally, the factors between Internet gratifications and communication styles were correlated to find out their relationships. The results showed positive-communication style group was strongly correlated with information-seeking and surveillance gratification purpose. The passive-communication style group was correlated with entertainment-escape and interpersonal and social communication gratification purpose.

中性微子에 의해서 核乾板內에 發生한 核反應에 대한 考察(Ⅱ)

朴仁坤,宋珍燮 慶尙大學校 1985 論文集 Vol.24 No.1

To compare and test the various methods of energy estimation, the Ech, Ecast and E(θ) parameter is examined as a function of Nh and n_s by making use of the data of 305 Neutrino jets in muclear emulsion. The method is reliable and the value of Ech give almost a constant, as a function of Nh, but increase as n_s. Its significance is discussed.

국외 저항성 잡초 발생 현황과 제초제 개발 방향

박인곤 한국잡초학회 2022 한국잡초학회 별책(학술대회 초록집) Vol.42 No.2

디지털케이블TV 이용자와 아날로그케이블TV 이용자에 대한 탐색적 연구

박인곤,강형구 한국방송학회 2007 한국방송학회 세미나 및 보고서 Vol.- No.-

디지털시대 국내 케이블TV 수신료 제도 검토

박인곤 한국방송학회 2007 한국방송학회 세미나 및 보고서 Vol.- No.-

디지털미디어 시대의 교회학교 미디어 비평교육 요구분석 연구

박인곤(Inkon Park) 한국기독교교육정보학회 2008 기독교교육정보 Vol.21 No.-

Modern society is a media oriented society. This fact is also applied to the people of Christian. Christians are affected by media same as secular people. However, there are no critical media education in the church. This study examined 4 research questions. 1) Why media education is need in the church? 2) What kind of media education is need in the church? 3) What should church prepare for media education in the church? 4) What are the expecting effects from the media education in the church? For solving this research questions, the author surveyed 202 seminary students. The results showed very high mean scores for every survey question. Especially, critical media education of the digital media's dysfunction is urgent in the church. The concern for the Internet pornography, game, and addiction makes the media education in the church very important and imminent. Demographic variables' mean differences are not significant related with research questions. This means most survey questions' results showed high mean scores regardless of demographic variables. Through this research the author found out several tasks for the future media education in the church. First, it depends on the changes of minister's recognition of media education in the church. Church leader's mind convert makes media education in the church possible as well as makes a coup. Secondly, the developments of media education programs are imminent to carry out the efficient operation of media education in the church. Finally, well established equipments for the media education should be needed to accomplish the goal of media education in the church.

스마트폰 이용자들의 이용과 충족, 의존도, 수용자 혁신성이 스마트폰 이용만족에 미치는 영향에 관한 연구

박인곤 ( In Kon Park ),신동희 ( Dong Hee Shin ) 한국지역언론학연합회 2010 언론과학연구 Vol.10 No.4

본 연구는 스마트폰 사용자들의 이용만족에 관한 탐색적 분석을 온라인 설문조사를 통하여 실시하였다. 혁신의 확산 이론과 이용과 충족이론을 바탕으로 스마트폰 수용자의 만족 요인(GO)들을 살펴보았으며, 또한 불만족(GNO) 요인들은 무엇인지도 알아보았다. 또한 스마트폰 수용자들의 수용자 혁신성이라는 성격적 특성, 스마트폰 의존도(몰입도), 인구통계학적 변인 등을 통하여서 스마트폰 사용이 수용자들에게 미치는 영향에 관하여 살펴보았다. 그 결과 스마트폰 수용자들의 만족요인으로 빠른 접속성, 오락성/시간때우기, 사회적지위, 문제 해결성, 촬영/스크린 등의 다섯 가지 요인이 추출되었으며, 불만족 요인으로는 소프트웨어 요인, 경제적 요인, 하드웨어 요인의 세 가지 요인이 발견되었다. 특별히 불만족 항목의 평균 순위에서 소프트웨어 및 하드웨어 요인 항목들 보다 경제적 요인 항목이 상위 세 순위를 차지했다는 것은 주목할 만한 발견이라 할 것이다. 스마트폰 만족요인과 스마트폰 의존도(몰입도) 및 수용자 혁신성과의 관계에서도 스마트폰의 의례적 사용과 도구적 사용모두에서 유의미하게 관련성이 있다고 나타났다. 스마트폰의 사용이 오락적 요소뿐만이 아니라 업무 및 학업 등에도 큰 도움이 된다는 것을 보여주었다. This study examines uses and gratifications of the smartphone users and their dissatisfying elements on using the service. It also explores demographic characteristics, personal characters, and smartphone dependendies of the smartphone users. The findings show that the five gratification factors are extracted: fast connectivity, entertainment/passing time, social position, solving problem, and camera/screen. Three non-gratification factors are also extracted: software, economical, and hardware. It is noticeable that top three non-gratification items are significantly related with economical factor. The results also indicate that the gratification factors, smartphone dependencies, and demographic characteristics are highly correlated. Smartphone adopters are using the device for both ritualistic and instrumental purposes. They use smartphones for not only utilitarian but also hedonic purposes in all aspects of users` personal lives. The finding suggests that users` perceived utilitarian performance and hedonic performance as two primary evaluative dimensions for smartphones.