근권에서 분리한 Bacillus sp.의 적용에 의한 토마토의 생장 촉진

이강형,송홍규,Lee, Kang-Hyeong,Song, Hong-Gyu 한국미생물학회 2007 미생물학회지 Vol.43 No.4

Two bacterial strains isolated from soil (Bacillus subtilis strains: PS2 and RFO41) were evaluated to determine their promoting effect on the growth of tomato seedling under axonic and pot conditions. The production of phytohormone, such as indole-3-acetic acid, indole-3-butyric acid, gibberellin and zeatin by these two strains was investigated as possible mechanisms for plant growth stimulation. Both PS2 and RFO41 were shown to produce various phytohormones, and. the production of phytohormones was stimulated by the addition of peptone-rich brain heart broth medium. In addition, these bacteria exhibited high levels of phosphatase activity, which ranged from 2.18 to $2.7\;{\mu}\;{\rho}-nitrophenol/ml/hr$. PS2 and RFO41 were applied to the pot test for growth of tomato seed with phosphate. Root and shoot lengths of germinated tomato after 15 days were 45.5% and 36.5% longer than that of control in RFO41 treated samples, respectively. Baciller sp. PS2 and RFO41 may have a potential for biofertilizer in the agriculture.

Phytophthora infestans와 Fusarium oxysporum의 생장을 저해하는 Bacillus 분리균주들의 항진균성 물질 생성능

이강형,송홍규,Lee, Kang-Hyeong,Song, Hong-Gyu 한국미생물학회 2008 미생물학회지 Vol.44 No.3

Late blight, one of the most important disease in many agricultural crops, is caused by Phytophthora infestans. Fusarium wilt is a vascular disease of many plants caused by Fusarium oxysporum. Some bacteria isolated from rhizosphere were screened for their ability to inhibit the growth of F. oxysporum and P. infestans. Productions of siderophore, $\beta-1$,3-glucanase, hydrogen cyanide and chitinase by 4 isolated strains were examined. Among them, Bacillus sp. RFO41 most effectively inhibited the growth of F. oxysporum. The highest productions of siderophore and $\beta-l$,3-glucanase were shown in the culture of Bacillus sp. RFO41. Bacillus strain PS2 was most effective against P. infestans. PS2 showed the highest production of chitinase and hydrogen cyanide. A significant relationship was shown between the antagonistic effects of isolates against F. oxysporum and P. infestans and their production level of siderophore, $\beta-1$,3-glucanase, hydrogen cyanide, and chitinase.

유권자의 정치후보에 대한 감정이 정치참여에 미치는 영향에 관한 연구

이강형(Lee GangHeong) 한국언론학회 2002 한국언론학보 Vol.46 No.5

This paper investigates the effects of discrete emotions such as anger, fear, hope, and pride toward political candidates on political participation. Construed as the opposite of reason, traditionally, emotions have been dismissed as irrational and private sensations which can not, by definition, play a valid role in public political deliberation. Based on the cognitive appraisal theories of discrete emotions, the paper focuses on the roles of discrete emotions as motives in arousing and sustaining activity or in producing exploratory reaction. I analyzed the five-wave panel survey data which were conducted by the Annenberg School for Communication of the University of Pennsylvania during the 1996 presidential campaign periods. The study was able to offer some modest findings. The results indicate, first of all, that anger and pride, not fear and hope, motivated voters' political participation such as campaign-related activity, or communicative participation. It is in any way surprising that people who really hate one of the candidates are more likely to watch the debates and otherwise be cognitively engaged in the campaign.

후보 결정에 대한 TV 토론의 영향력에 있어서 정치 환경의 역할

이강형(Lee GangHeong),김춘식(Kim Chun-Sik),양승찬(Yang SeungChan),권혁남(Kwon Hyok-Nam) 한국방송학회 2004 한국방송학보 Vol.18 No.3

감정과 공론장

이강형(Gang-Heung Lee),김상호(Sang Ho Kim) 사단법인 언론과 사회 2014 언론과 사회 Vol.22 No.1

최근 들어 새롭게 그 존재감을 획득하기 이전에는, 정서 혹은 감정이라는 영역은 이성의 오염된 형태 혹은 이성의 합리적 작용을 막는 장애물로 간주되어 왔다. 그러나 최근의 여러 과학적 연구들에서는 이성이 정서 혹은 감정이라는 것과 동떨어져 존재하는 것이 아니라 그물처럼 그 두 요소가 서로 촘촘히 엮어져 있다는 사실들이 밝혀지고 있다. 이 논문은 후설의 생활세계 개념을 적극적으로 수용함으로써 하버마스의 공론장 논의가 감정이 배제된 이성의 작동과정이 아니라 감정이라는 요소를 적극적으로 수용할 때 보다 더 큰 효용성과 설명력을 지닐 수 있다는 관점을 취하고 있다. 공론장에서의 의사소통행위는 ‘언어’에 의해서만 매개되는 것이 아니라 비언어적, 감성적인 요소들을 통한 상호이해의 확립이 가능할 수 있다고 보았다. 그 결론적 주장으로 이 논문에서는 감정지능이라는 개념을 제시하고 있는데, 감정지능은 이성의 대척점으로서의 감정에 대한 인식에서 벗어나 감정과 그것의 작동에도 이성적 형식이 개입되고 의사소통과 상호이해를 위한 중요한 인간의 능력이라는 사실을 밝히려는 시도다. Emotion or passion has been regarded as a contaminated form of reason or an obstacle to preventing an efficient operation of reason. It has been recently found in the scientific research that emotion is not the opposite areas of reason but is very closely interwoven with reason, however. Based on Husserl"s concept of life world, this paper argues that the deliberation of Habermas" public sphere can have more usefulness and power of explanation when we consider emotion should not be excluded but regarded as a necessary element in public sphere. Communicative action for mutual understanding in public sphere is not just mediated by "language" but also non-verbal and affective elements. The paper suggests the concept of "emotional intelligence" which is very useful helping us realize that emotion is an important human competence for communication and mutual understanding and can operate in a reasonable way, not in the opposite way of reason.

정치 후보에 대한 유권자 감정의 미디어 점화효과에 관한 연구: Rush Limbaugh 라디오 정치 토크쇼 주목효과(Dosage Effect)

이강형 ( Gang Heong Lee ) 한국커뮤니케이션학회 2005 커뮤니케이션학연구 Vol.13 No.5

정치적 사건에 대한 유권자의 감정적 반응과 정치참여의 관계: 2004년 대통령 탄핵사건을 중심으로

이강형 ( Gang Heong Lee ) 대한정치학회 2007 대한정치학회보 Vol.15 No.2

지역민들의 지역 정체성이 지역뉴스 시청 및 평가에 미치는 영향에 관한 연구

이강형 ( Gang Heong Lee ),문종대 ( Jong Dae Moon ) 한국지역언론학회 2006 언론과학연구 Vol.6 No.3

This study is to explore the effect of ``regional identity`` of local television viewers on local television news viewing and evaluation. To do this, the study analyzes critically the ambiguity around ``ji-uk-sung`` and distinguishes the concepts of ``localism`` and ``regional identity``. The ``regional identity`` is defined as regional consciousness of people living in a geographic place or outside of it. Based on a survey of 500 respondents in Daegu and Pusan, the study tries to answer to three research questions; (1) what dimensions is the ``regional identity`` consist of? (2) what impacts of ``regional identity`` are on local television news viewing? (3) what impacts of ``regional identity`` are on the evaluation of local television news? As a result, we found that ``regional identity`` is consist of four dimensions such as ``ties to place``, ``affective ties to community``, ``active involvement in community`` and ``cognitive ties to community``. We also found that ``active involvement in community``, defined as deep concern in community and activities for it, had an impact of how much people living in the region views local television news in addition to national television news. There was no influence of other three ties to community on local television news. The ``active involvement in community`` also was positively related to respondents` evaluation of lengthening the local television news time. On the other hand, ``cognitive ties to community`` had an positive impact on the perception that local television news should speak for the region`s interests on conflicting agenda against anther region even at a considerable sacrifice of new objectivity.

대통령 후보의 텔레비전 토론이 후보 이미지 변화에 미치는 효과

이강형(Gang-Heong Lee) 한국언론학회 2004 한국언론학보 Vol.48 No.2

This study examines the effects of televised presidential debates, which are important momentums in the electoral campaign process, on voters' change in candidate image perception. Data came from a series of two surveys during the 2002 Korean presidential campaign periods from October 29 to December 15, 2002. Sample was an random telephone sample of the population in Daegu and GwangJu. Based on a review of the results in previous studies, the study first explored the determinants of voters' candidates image perception so as to detect the independent effect of the televised debates on their change in the candidate image perception. Results shows that the voters' candidate images are explained by various factors such as the issue proximity between a candidate's policy position and a voter's perception of it, and a voter's discrete emotions toward presidential candidates in addition to political party identification and political ideology. After controlling those determining factors of voters' candidate image perception, the study tests three research hypotheses as regards the effects of televised debates on voters' change in candidate image perception: 1) the effects of televised presidential debates will be stronger in the less salient candidate image than the more salient; 2) the change will be stronger in a candidate's image of 'personal character' rather than 'performance perception'; 3) the effects of televised presidential debates will be stronger among the less attentive than the more attentive to the campaigns. The results show that the debates did affect the viewers' change in the 'personal character' image perception of the less salient candidate.

농촌지역민들의 커뮤니케이션 채널 이용이 범죄위험지각에 미치는 영향

이강형 ( Gang Heong Lee ) 한국지역언론학회 2013 언론과학연구 Vol.13 No.3

This study tries to test the competitive hypotheses to explain the relationship between television and interpersonal communication, and the perception of crime risk: cultivation effect hypothesis vs. impersonal impact hypothesis; mainstreaming hypothesis vs. resonance hypothesis. Using the survey data of the 2,000 rural residents sample, the results showed that the impersonal impact hypothesis, expecting the impact of interpersonal communication on the personal perception of crime risk, was confirmed instead of the cultivation effect hypothesis which tells the impact of television on the personal and social perception of crime risk. On the other hand, not confirmed was either of mainstreaming or resonance hypothesis which competitively explains the different relationship between television viewing and crime risk perception depending on the possibility of everyday exposure to real crime. Rather, interpersonal communication had an important impact on the personal perception of crime risk as the population size of the rural residence increases.