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GIS를 이용한 울산지역 선사유적 입지분석 및 분포예측
이한동 ( Han Dong Lee ),김교원 ( Gyo Won Kim ) 한국지리정보학회 2012 한국지리정보학회지 Vol.15 No.3
The optimum location of the prehistoric sites of Ulsan Metropolitan City are investigated by both quantile and natural breaks methods through GIS, and the settlement pattern is studied based on the possibility of presence of the prehistoric sites which are also analyzed with these methods. Such factors including elevation, slope, distance from the nearest water, aspect, geological features, soil drainage classes, subsoil and land use recommended are employed in the analysis. The optimum geographical environment is the place where it includes the water-base in the area that is the southern aspect of the gentle slope land of lowland. The geology is the Quaternary alluvium. The drainage class is fine and the deep soil saturn is the fine loamy soil and the recommendation of land use is the area that is the field. As a result of the forecast of distribution, the prehistoric sites showed the higher possibility of presence in the downstream region where the Taehwa river and Dongcheon river join because the region come close to the watercourse and the drinking water use is easy. And the aspect and elevation is the low area. The alluvium accumulated from the upper stream of the Taehwa river and Dongheon river was made roomily, the area where is suitable for the farming life. Therefore, this region is judged that the possibility of presence of the prehistoric sites is high.
이한동(Lee, Han-Dong),곽문규(Kwak, Moon-K.),김정훈(Kim, Jeong-Hoon),송윤철(Song, Yoon-Chul),심재호(Shim, Jae-Ho) 한국소음진동공학회 2009 한국소음진동공학회 논문집 Vol.19 No.8
This research is concerned with the application of the active linear actuator to the active vibration control of structure. The active linear actuator will be mounted on the sub-frame so that it can cancel the excitation transferred from the engine. Accelerometer mounted on the sub-frame detects the vibration and its signal is fed into the DSP controller where the control algorithm is installed. The output of the DSP controller is connected to the driver which amplifies the DSP output. In general, the pulse width modulation power amplifier is used to drive the voice-coil type actuator. This study shows the dynamic characteristics of the active linear actuator and active vibration control experimental results.
Caeoma makinoi에 의한 매실나무 꽃눈녹병의 발생 보고
이승열 ( Seung-yeol Lee ),이연희 ( Yeon-hee Lee ),박수진 ( Su-jin Park ),이한동 ( Han-dong Lee ),이재진 ( Jae-jin Lee ),강인규 ( In-kyu Kang ),이향범 ( Hyang Burm Lee ),정희영 ( Hee-young Jung ) 한국균학회 2016 韓國菌學會誌 Vol.44 No.4
Abnormal chloranthy was observed on Prunus mume trees grown in an orchard in Uiseong, Gyeongbuk province, Korea in 2015. Flower buds showing chloranthy were covered with numerous orange-colored sori, which were confirmed to contain spermogonia and aeciospores by stereo microscopy and light microscopy. When observed using scanning electron microscope, the aeciospores were globose, ellipsoid, or ovoid, and measured 22.8~35.6 × 19.8~36.8 μm, with a verrucae wall ornamentation. To construct a phylogeny, the large and small subunit regions of rDNA were sequenced and compared with those of allied species by the maximum likelihood method. The isolated fungus species showed high similarities with Caeoma makinoi (Teleomorph: Blastospora smilacis), which was previously isolated from P. mume in Japan. Therefore, we initially report this fungal agent parasitic on P. mume as C. makinoi in Korea and name the disease it causes as “flower bud chloranthy disease”.
이행우(Lee, Haeng-Woo),곽문규(Kwak, Moon-K.),김기영(Kim, Ki-Young),이한동(Lee, Han-Dong) 한국소음진동공학회 2009 한국소음진동공학회 논문집 Vol.19 No.7
This paper is concerned with the development of linear magnetic actuator for active vibration control. The newly developed linear magnetic actuator consists of permanent magnets and copper coils. On the contrary to the voice-coil type actuator, the linear magnetic actuator utilizes magnetic flux to generate the shaft movement. In this study, experiments on the prototype linear magnetic actuator were carried out to investigate its dynamic characteristics. Block and inertia forces generated by the actuator were measured. The experimental results show that the actuator can be used as both actuator and active tuned-mass damper. The linear magnetic actuator was attached to a cantilever as the active-tuned mass damper and active vibration control experiment was carried out. The experimental results show that the newly developed linear magnetic actuator can be effectively used for the active vibration control of structures.
한경천,노형래,이한동,이유상,Chon, Han-Kyong,Roh, Hyong-Rae,Lee, Han-Dong,Lee, Yu-Sang The Korean Society for Microsurgery 2012 Archives of reconstructive microsurgery Vol.21 No.1
Purpose: We reviewed 66 cases of the glomus tumors in the hands. The purpose of this study was to review the characteristic signs and symptoms of glomus tumors and the surgical outcomes. We made hypothesis that (1) our guideline for surgical excision are reliable and (2) our surgical technique is efficient and less harmful to the nail root. Materials and Methods: The clinical diagnosis was made with occasional radiological studies and surgical excision was performed according to our indications. Patients with electrical shock-like pain by touching (the essential symptom) and at least 2 of 4 clinical signs and symptoms (cold hypersensitivity, paroxysmal pain that radiated proximally, blue discoloration, nail deformity for dorsal tumor or a palpable nodule for pulp tumor) underwent surgical excision. Results: The duration of symptoms of the patients was about 5.3 years. No difference of prevalence was found in both hands, but the thumb and the middle finger were more affected than the other fingers. The mean follow up period was 2.4 years and none of the patients complained the same characteristic pain at the last visit. Conclusion: To the best of our knowledge, this report is the largest case series about glomus tumors in the finger tip. The clinical signs and symptoms are important to make a diagnosis of glomus tumors, and surgical excision is the treatment of choice.