• Proceedings of the Korean Society for Environmental Edudation Conference
• /
• 2001.07a
• /
• pp.73-81
• /
• 2001

• Proceedings of the Korean Society of Environment and Ecology Conference
• /
• 2000.04a
• /
• pp.75-78
• /
• 2000

• Proceedings of the Korean Society of Life Science Conference
• /
• 2001.02a
• /
• pp.48-48
• /
• 2001

• Proceedings of the Korean Society of Sericultural Science Conference
• /
• 2000.10a
• /
• pp.134-134
• /
• 2000

• The KIPS Transactions:PartB
• /
• v.18B no.1
• /
• pp.39-44
• /
• 2011

In this paper, we propose a method to improve the Firefly Algorithm(FA) introduced by Xin-She Yang, recently. We design and analyze the improved firefly algorithm based on the heuristic. We compare the FA with the Particle Swarm Optimization (PSO) which the problem domain is similar with the FA in terms of accuracy, algorithm convergence time, the motion of each particle. The compare experiments show that the accuracy of FA is not worse than PSO's, but the convergence time of FA is slower than PSO's. In this paper, we consider intuitive reasons of slow convergence time problem of FA, and propose the improved version of FA using a partial mutation heuristic based on the consideration. The experiments using benchmark functions show the accuracy and convergence time of the improved FA are better than them of PSO and original FA.

• Proceedings of the Korean Society of Sericultural Science Conference
• /
• 2001.10a
• /
• pp.64-64
• /
• 2001

• The Journal of the Korea Contents Association
• /
• v.8 no.12
• /
• pp.424-432
• /
• 2008

In this study the author analysed impact of image of regional festival on satisfaction of tourists and their intention for revisit through an example of firefly festival in Youngyang-kun. Current Firefly Festival of Youngyang is its fifth since its beginning. Unlike festivals in other areas it is held during daytime and nighttime respectively. In it natural environment and ecosystem in Youngyang area are highlighted and it is unique in the sense that such festival is performed with live insects. Festival is organized with various sights to see including experiencing flying fireflies in nighttime and making insects etc. In this study the author analysed impact of image of regional festival on satisfaction of tourists and their intention for revisit. In this connection this author chose 20 items in connection with image of regional festival. Then I carried out analysis on various factors in connection with tourists as appeared in regional festival. I performed analysis on diversity, experience, convenience, conveyance of content of festival and its creativity as factors constituting satisfaction of tourists in connection with image of regional festival. Result of analysis undertaken in this study revealed that image of regional festival and satisfaction of tourists who experienced festivals served to their expressing intention for revisiting. For inducing tourists intention for revisiting image of regional festival, conveyance of diverse information, diversity of program of the festival, new experience, sense of expectation are important. Therefore this is need for development of environment and ecosystem friendly programs and it should be developed as a consistent environment friendly festival rather on temporary touch- and-go event.

• The Korean Journal of Ecology
• /
• v.22 no.5
• /
• pp.271-276
• /
• 1999

Luminescent patterns of the firefly Hotaria papariensis were classified into routine flashing and courtship flashing, and they were analyzed into duration and period. Flash period of male was changed from 1.26 sec (routine flashing) to 1.12 sec (courtship flashing) and the female's was changed from 2.99 sec to 1.06 sec in this species. Duration time of male increased approximately 1.4-fold from 0.12 sec (routine flashing) to 0.17 sec (courtship flashing) and period of male decreased 0.88-fold from 1.26 sec (routine flashing) to 1.12 sec (courtship flashing). Duration of female increased about 1.5-fold from 0.15. sec (routine flashing) to 0.19 sec (courtship flashing) and period of female decreased almost 0.35 from 2.99 sec (routine flashing) to 1.06 sec (courtship flashing). Hertz frequencies of them were 0.8 (routine flashing of male), 0.9 (courtship flashing of male), 0.3 (routine flashing of female) and 0.9 (courtship flashing of female), respectively. The spectral emission of H. papariensis was detected at 400 nm to 700 nm, and the highest peak wave length of this species was approximately 600 nm, but some 500 to 600 nm wave lengths were present.

• Proceedings of the Speleological Society Conference
• /
• 2001.06a
• /
• pp.3-29
• /
• 2001

파파리반딧불이(H papariensis)의 생태학적 특성을 규명하고자 서식처 환경, 개체군, 고도별 출현양상과 지역별 분포양상, 발광양상, 교미행동을 조사하였다. 춘천시 서면 지암리에서 H. papariensis 성충의 개체군 밀도를 1998년 5월부터 7월에 걸쳐 조사하였으며, 전체 채집 개체수는 703개체였다. 이중 수컷은 680개체, 암컷은 23개체를 채집하였다. 지암리에서 전체 출현기간은 50여 일로 추정되었다. 처음 출현한 날로부터 2주에서 3주 사이에 최대 정점을 나타내었으며, 이후 점진적으로 감소하는 출현양상을 나타내었다. 수컷 680개체중 47개체는 재 포획되었으며, 이로서 추정된 최대수명은 6일 이상, 평균수명은 3.26일로 나타났으며, 수컷과 암컷의 상대적인 성비는 27.5/l로 나타났다. 한국산 Hotaria속 반딧불이 2종의 고도별 출현 및 지역별 분포양상에 대하여 1999년 5월부터 7월까지 18개 지역을 선정하여 조사하였다. 전체 채집개체수는 1096개체였으며 이중 H. papariensis는 584개체, H unmunsana는 512개체였다 두 종은 제주도를 제외한 전 조사지역에서 공서 하고 있었으며 H. papariensis는 북쪽지역에 우세하게 분포하였고 H. unmunsana는 남쪽지역에 우세하게 분포하는 양상을 나타내었다. 성충 반딧불이의 최고 출현성기는 고도가 높아질수록 늦어지는 경향을 나타내었다. 고도별로 200m 이하 지역에서는 6월 초순에서 중순, 200-400m 지역에서는 6월 중순에서 말경, 400-600m 지역에서는 6월말 경부터 7월 초순, 600-800m 지역에서는 7월 초순부터 중순에 각각 최고 성기를 나타내었다. H. papariensis의 암컷과 수컷의 발광양상을 분석하고자 정지발광과 구애 발광을 구분하여 조사하였고 각각의 발광지속시간과 발광주기를 구분하여 측정하였다. 수컷의 발광지속시간은 정지발광(0.12초)보다 구애발광(0.17초)에서 1.4배 증가하였으며 암컷의 발광지속시간은 정지발광(0.15초)보다 구애발광(0.19초)에서 1.5배 증가하였다. 발광주기는 수컷에서 정지발광(1.26초)보다 구애발광(1.12초)에서 0.88배 감소하였고, 암컷에서 정지발광(2.99초)보다 구애발광(1.06초)에서 0.35배 감소하였다. 발광양상에서 발광주파수는 수짓의 정지발광에서 0.8 Hz, 수컷 구애발광에서 0.9 Hz, 암컷의 정지발광에서 0.3 Hz, 암컷의 구애발광에서 0.9 Hz로 각각 나타났다. H. papariensis의 발광파장영역은 400 nm에서 700 nm에 이르는 모든 영역에서 확인되었으며 가장 높은 첨두치는 600 nm에 있고 500에서 600 nm 사이의 파장대가 가장 두드러지게 나타났다. 발광양상과 어우러진 교미행동은 Hp system과 같은 결과를 얻었다.

• Proceedings of the Korean Society of Applied Entomolohy Conference
• /
• 2001.05a
• /
• pp.95-95
• /
• 2001