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김형구(Hyoung-Gu Kim),손재영(Jae-Young Son),선우영수(Young-Soo Sun Woo) 한국컴퓨터정보학회 2009 한국컴퓨터정보학회 학술발표논문집 Vol.16 No.2
21세기 초 경쟁 환경에서 조직이 대처하기 위한 기업환경의 패러다임도 바뀌어 가면서 지식자산은 보다 더 중요한 기업가치 창출의 요소로 자리 잡게 되었다. 그러나 아직까지 대다수의 기업은 지식경영을 수행함에 있어 조직문화나 정보기술과 같은 지식경영 영향요소(knowledge management enabler)자체에만 초점을 맞추고 있을 뿐 이를 어떻게 전략적으로 활용할 것인가에 대한 명확한 체계를 갖고 있지 못한 것도 사실이다. 따라서 종사원들이 보유하고 있는 지식이 기업의 근본자산이 되는 호텔 기업경영에 있어 변화하는 환경에 능동적으로 대처하며, 또한 시장에서의 경쟁우위의 획득 및 유지를 위해서는 전략적 지식경영 하에서 기업의 지식경영활동이 이루어져야 한다. 이러한 관점에서 호텔기업의 지식경영전략이 경영성과에 미치는 영향을 분석한 결과 형식지를 중심으로 한 시스템 지향적 지식경영전략과 암묵지를 중심으로 한 인적 지향적 지식경영전략 모두 경쟁우위 정(+)의 영향을 미치는 것으로 나타났다. 또한 경쟁우위는 재무성과에 정(+)의 영향을 미치는 것으로 나타났다. 반면에 지식경영전략은 재무성과에 부(-)의 영향을 미치는 것으로 나타나, 지식경영전략은 호텔기업의 경쟁우위를 획득 유지시키며 이를 통해 재무성과에 영향을 미친다고 나타났다. 이는 호텔기업에 있어서 모든 지식자산(암묵지, 형식지)를 기반으로 한 지식경영의 중요성을 인식시키고, 보다 지식경영활동을 활성화함으로써 호텔기업의 기업성과를 제고시킬 수 있는 구체적인 실행방안을 제시하였다.
아파트단지에서 아파트 층별 및 배치구조에 따른 도로교통소음 평가
이내현,선우영,조기철,조경덕,조일형,Lee Nae-Hyun,Sun Woo-Young,Cho Ki-Chul,Zoh Kyung-Duk,Cho Il-Young 한국환경보건학회 2006 한국환경보건학회지 Vol.32 No.2
The road traffic noise has been increasing broader effects on urban areas as well as rural areas because of rapidly increasing traffic volume and newly-constructed roads. 10 sites in building development areas were selected and the noise levels were measured by the apartment floors and by the various block plans of apartment complex. The results showed that the highest traffic noise level was obtained at the 5 and 7 floors on the apartment floors. On the basis of 7 floor with the highest level, the correction coefficient obtained from noise reduction by each floor and measurement point was -5.54 dB(A)(1st floors), -0.96 dB(A)(3rd floors), -0.38 dB(A)(5th floors), 0.00 dB(A)(7th floors), -1.98 dB(A)(l0th floors), -3.10 dB(A)(13th floors), -3.45 dB(A)(15th floors). The level of road traffic noise in the arrangement construction of right angle was about 3.0 dB(A) at N-4 point and 2.1 dB(A) at N-6 point lower than that of a plan figure, respectively. The results suggested that application of correction coefficient obtained by the apartment floor and by the arrangement construction can be improved in road traffic noise.
박영민(Young Min Park),이내현(Nae Hyun Lee),선우영(Woo Young Sun) 한국환경영향평가학회 2001 환경영향평가 Vol.10 No.4
Effects on increased noise influenced residents on the urban areas as well as the rural areas because of rapidly increasing traffic volume and newly-constructed road. The object of this study is to better establish environmental policy for the year 2000s through analyzing current environment administration system in the field of noise and vibration. Noise and vibration administration system in Korea is composed of various standards in areas of noise environment, traffic noise regulation, living noise regulation, factory noise and vibration regulation, and aircraft noise regulation. Furthermore, there exists environment noise and vibration monitoring networking system. This study is to improve noise and vibration administration system through analyzing present condition and problems. This study suggests improved noise and vibration administration system by achieving four steps ; 1) goal establishment in noise and vibration administration system; 2) development of reduction mitigation method; 3) estimation of reduction mitigation method; 4) establishment of enforcement method. Proposed Noise and Vibration Policy Committee should be established to harmonize noise and vibration policy on scientific basis for the 21^(st) century.
이내현(Nae Hyun Lee),박영민(Young Min Park),선우영(Woo Young Sun) 한국환경영향평가학회 2001 환경영향평가 Vol.10 No.4
Recently the road traffic noise has appeared as a significant environmental issue because of dramatic increase of vehicles and expansion of newly constructed road. Therefore, this study proposes the method that improves prediction factors and models through analysis of the existing road traffic noise prediction model. Prediction factors can be improved by establishing guideline for diffraction attenuation and applying daily traffic discharge, peak traffic discharge, and average traveling speed through an analysis of level service. Prediction must be made by periods of one or five years during 20 years. Prediction models also can be improved to include better prediction model through setting the database, establishing functional relation between physical properties and noise levels by acoustic analysis, and developing models for road traffic noise prediction in residential areas.
음식물류폐기물 처리시설에서의 악취발생 특성 및 관리방안
유승성 ( Sung Yoo Seung ),김영두 ( Young Doo Kim ),이준연 ( Jun Yeon Lee ),차영섭 ( Young Seop Cha ),김은숙 ( Eun Sook Kim ),전재식 ( Jae Sik Jeon ),선우영 ( Woo Young Sun ),엄석원 ( Seok Won Eom ),채영주YoungZooChae 한국환경영향평가학회 2012 환경영향평가 Vol.21 No.3
This study is understanding characteristics and analyzing contributions of the odor causing compounds of complex-odor & major specified odor materials, and contribution analysis, caused pre-treatment facilities(input and storage) and post-treatment facilities(heating and drying). The target of this study is feeds-production-facilities, located in Seoul, The averaged complex-odor compounds on the boundary line is 21 times higher, and it is 15 times higher than emission standards, In cracking & collection(pre-treatment facilities), the concentration of compounds is 4,881 times, 2,080 times in drying, and 1,442 times in putting & storing facilities. Ammonia occupies the largest portion of the results of monitoring specified odor compounds in input & storage facilities, followed Acetaldehyde > Hydrogen sulfide > Methyl mercaptan. In cracking & collection, Ammonia also occupies most of odor compounds, followed Methyl mercaptan > Acetaldehyde > Dimethyl disulfide > Dimethyl sulfide > Hydrogen sulfide. Acetaldehyde > Methyl mercaptan in drying facilities, On the boundary line, however, the concentration of specified odor compounds stays below emission standards. The result of contribution analysis is that methyl mercaptan has the highest contribution in input & storage, as well as cracking & collection facilities, followed Acetaldehyde > Hydrogen sulfide > Dimethyl sulfide > Dimethyl disulfide. In the drying facilities, the contribution shows Methyl mercaptan > Acetaldehyde > I-Valeraldehyde and Butyraldehyde. Therefore, to decrease odor in food waste treatment facilities, proper prevention facilities need to be installed and operated, according to characteristics of individual odor compounds, based on monitored data.
이충헌(Chung-Heon Lee),장이찬(Lee-Chan Jang),선우영(Woo-Young Sun),박진우(Jin-Woo Park),최재운(Jae-Woon Choi) 대한외과학회 2009 Annals of Surgical Treatment and Research(ASRT) Vol.77 No.6
Purpose: Left iliac vein compression is a risk factor for deep vein thrombosis (DVT) and often can be symptomatic. We wanted to know the incidence of left iliac vein compressions in the general population and the relationship between iliac vein compression and outflow fraction of the lower extremities. Methods: 1,523 cases examined with abdomen - pelvis CT were included in this study. Left iliac vein compression was calculated as the diameter of left common iliac vein at the site of maximal compression divided by the diameter of the uncompressed caudal common iliac vein. These cases were divided into 4 groups by the degree of iliac vein compression. In addition, left lower extremity venous outflow fractions in 106 patients with abdomen - pelvis CT images were recorded and analyzed. Results: The number and mean age of each group (group 1, 2, 3 and 4) were 351 (23%) & 62.3±13.4, 426 (28%) & 57.7±16.1, 529 (35%) & 50.1±20.4 and 217 (14%) & 40.7±22.9, respectively. While the age of patients was decreasing, the occurrence of left iliac vein compression increased (P<0.01). The mean left low extremity venous outflow fractions of each group (group 1, 2, 3 and 4) was 27.9±6.9%, 26.9±6.4%, 25.9±6.7% and 19.1±6.6%, respectively. The mean outflow fraction of group 4 was significantly lower than that of other groups (P<0.01). There was a tendency that the more left iliac vein compression increased, the more outflow fraction decreased (P=0.011). Conclusion: In 14% of 1,523 cases, there were severe left iliac vein compressions, more than 75% diameter, and the mean outflow fraction of that was lower than in others. Further study is needed to realize the relationship between left iliac vein compression and DVT.
김동주(Dong-Ju Kim),최한림(Han-Lim Choi),선우영(Woo-Young Sun),류동희(Dong-Hee Ryu),장이찬(Lee-Chan Jang),최재운(Jae-Woon Choi),박진우(Jin-Woo Park) 대한외과학회 2009 Annals of Surgical Treatment and Research(ASRT) Vol.77 No.3
Purpose: Recently, conventional tissue repairs are gradually being replaced by tension-free hernioplasties using meshes (mesh repairs) in hernia surgery. The aim of the present study was to evaluate patterns of recurrent hernias according to the types of previous hernioplasties. Methods: From August 2005 to July 2008, 18 hernioplasties were performed in recurrent cases at Chungbuk National University Hospital. All previous hernioplasties were performed at local hospitals except one case of ventral hernia. We reviewed the medical records and compared clinical features according to the types of previous hernioplasties. Results: Among the 18 recurrent hernias, there were 15 inguinal including 2 pediatric cases, an umbilical, and 2 incisional hernias. Among 13 adult inguinal recurrent cases, 5 occurred after tissue repair (3 indirect, 1 direct, and 1 pantaloon type) and 8 after mesh repairs (direct type in all). Recurrence developed earlier after mesh repairs than tissue repairs (median [min~max]; 24 [0.1~164] vs. 243 [60~360] months, P=0.005). Other types of recurrence developed between 6 to 48 months after previous operations. Recurrent hernias after mesh repairs occurred preferentially along the margin of previous meshes. All cases were treated by mesh repairs except in pediatric cases. Median operation time and hospital stay for recurrent inguinal hernias were not different significantly by previous operations. Postoperative complications were minimal without recurrence during a median 5.5-(1.5~25.5)-month follow-up. Conclusion: Recurrent hernias develop both after tissue repairs and mesh repairs. After mesh repairs, recurrences develop earlier and are more often associated with technical failure compared to tissue repairs.