군용 쉘터의 소음 저감과 유량 증가를 위한 사각덕트 설계에 관한 연구

백인기(In-Gi Baek),한성욱(Sung-Wook Han),이석규(Suk-Kyu Lee),이증(Jeung Lee),정소영(So-young Jeong) 대한기계학회 2016 대한기계학회 춘추학술대회 Vol.2016 No.12

A military shelter contents various electrical equipments and is operated on external environment conditions. The Operator carry out missions in the shelter for a long time so there has to be a effective duct which supply air to the inside of the shelter constantly and efficiently. For the duct design optimization, these critical design factors are optimized for the operational environment with design of theoretical analysis. We present optimal conditions of the duct based on theoretical method and thermal analysis.

사료의 곡류조성 ( 수수 , 수수 + 옥수수 , 옥수수 ) 이 육계 , 돼지 및 한우의 생산성에 미치는 영향

백인기(In Kee Paik),문윤영(Yun Young Moon),이종복(Jong Bok Lee),(Bruce Boren) 한국축산학회 1989 한국축산학회지 Vol.31 No.8

Effects of grain composition of feeds on the performance of broiler chickens, swine and Korean native bulls were tested. Least-cost diets formulated to be isocaloric and isonitrogenous contained one of the 3 grain sources; U.S. No. 2 Yellow Grain Sorghum, U.S. No. 3 Yellow Dent Corn, and a 50:50 combination of sorghum and corn. Broiler chickens fed sorghum+corn diet showed more weight gain(p$lt;0.05) and better feed efficiency than the birds fed either sorghum diet or corn diet. Pigs fed sorghum diet and sorghum-corn diet showed significantly more weight gain(p$lt;0.01) and more feed intake(p$lt;0.05) than those fed corn diet. Feed efficiency of the pigs fed sorghum + corn diet was highest followed by corn diet and sorghum diet but they were not significantly different. Cattle fed sorghum diet and sorghum+corn diet gained significantly (p$lt;0.05) more weight than those fed corn diet. Feed efficiency of the tattles were not significantly influenced but those fed corn diet tended to be lower than others. Overall, combination of sorghum and corn showed best results indicating synergistic effect of two grain sources and there were species differences in the response to sorghum and corn. The results of cattle expriment indicates that difference of TDN values of sorghum and corn may not as great as expected.

화학적 방법으로 측정한 단백질원료들의 가용라이신함량

백인기(I . K . Paik),남궁환(H . Namkung),이희석(H . S . Lee) 한국영양사료학회 1994 韓國營養飼料學會誌 Vol.18 No.2

고객만족에 대한 은행서비스 품질속성의 비대칭적 영향력 분석

백인기 ( In Gie Baek ),전영호 ( Young Ho Chun ),이춘선 ( Chun Seon Lee ),최영락 ( Young Lak Choi ) 한국품질경영학회 2011 품질경영학회지 Vol.39 No.1

The paper presents the results of a study on the determinants of customer satisfaction for a retail bank using the data of 2009 NCSI(National Customer Satisfaction Index, KPC). In doing so, it uses a revised version of the traditional analyses based on derived measures of attribute importance. The need for a revised methodology is prompted by the insights of the two- and three-factor theories of customer satisfaction, such as Kano`s framework. Indeed, the evidence from 1635 customers of 6 Korean banks confirms an asymmetric relationship between attribute performances and overall customer satisfaction. The results from both a traditional and our revised approach are compared. While this approach can be applied across different industries, it should not be assumed that the numerical results presented in the paper apply to contexts with substantially different underlying characteristics. General trends and practical implications for banking services are reported in the conclusions.

광CATV 분배시스템의 프로세서간 통신방식 설계

백인기(I.K.Baik),이태훈(T.H.Lee),강성수(S.S.Kang) 한국통신학회 1993 한국통신학회 학술대회논문집 Vol.12 No.1

무선로컬룹 기술동향

김선영,백인기,이광천,Kim, Seon-Yeong,Baek, In-Gi,Lee, Gwang-Cheon 한국전자통신연구원 1996 전자통신동향분석 Vol.11 No.4

최근 기존 전화서비스를 무선으로 제공하여, 경제성뿐만 아니라 고속의 데이터 및 팩스서비스에 의한 서비스의 차별화를 이루려는 연구개발이 행해지고 있다. 이같은 가입자선로의 무선화를 위한 시스템을 WLL(Wireless Local Loop)이라 한다. 본 고에서는 먼저 WLL시스템의 구성 및 원리를 살펴보고, 현재 사용중이거나 개발예정인 WLL시스템의 방식 및 특성을 비교분석하였으며, 시스템 계획(planning)에 근거하여 용량, 서비스영역, 음질 등의 관점에서 기존 셀룰러시스템에 대비한 분석결과를 논의하였다. 또한 향후 진화방향 및 표준화동향 등을 검토하였으며 끝으로 결론을 언급하였다.

늑골에 발생한 원발성 양성 종양[3 치험예]

이남수,백인기,손광현,Lee, Nam-Soo,Baek, In-Gi,Sohn, Kwang-Hyun 대한흉부심장혈관외과학회 1981 Journal of Chest Surgery (J Chest Surg) Vol.14 No.4

From Aug. 1975 to Aug. 1981,3 patients with primary benign rib tumors have been treated at the department of thoracic surgery, Paik Hospital, Seoul, Korea. Of these, one was aneurysmal bone cyst and two were fibrous dysplasia. Complete excision of the benign tumor including rib resection was performed in all patients and resulted in long term cure.

개량 한방제제(Herb Mix Gold^®) 첨가가 산란계 생산성에 미치는 영향

이우선,백인기,Lee, W.S.,Paik, I.K. 한국가금학회 2007 韓國家禽學會誌 Vol.34 No.1

한방제제 Herb $Mix^{(R)}$(Herb BIO Co.)에 당귀, 작약, 천궁을 강화한 개량 한방제제(Herb Mix $Gold^{(R)}$)의 상대적 효능과 적정 첨가 수준을 결정하기 위해 사양 시험을 실시하였다. 시험은 45주령 산란계(Hy-Line Brown) 720수를 대조구 포함하여 총 6개 처리구로 처리당 6반복 반복당 10케이지, 케이지당 2수씩 수용하여 난괴법으로 배치한 후 5주간의 사양 시험을 실시하였다. 처리구는 대조구(T1), Herb $Mix^{(R)}$ 0.2% 첨가구(T2), Herb Mix $Gold^{(R)}$ 0.1% 첨가구(T3), Herb Mix $Gold^{(R)}$ 0.2% 첨가구(T4), Herb Mix $Gold^{(R)}$ 0.3% 첨가구(T5) 그리고 항생제 $Avilamycin^{(R)}$ 2%를 함유한 $Avilamix^{(R)}$ (CTC BIO Co., Ltd)를 0.03% 사용하여 6 ppm 첨가구(T6)를 두었다. 실험 결과 산란율은 Herb Mix $Gold^{(R)}$ 0.2% 첨가구가 가장 높았으며(P<0.05) 다음으로 Herb Mix $Gold^{(R)}$ 0.3% 첨가구, Herb $Mix^{(R)}$ 0.2% 첨가구, Herb Mix $Gold^{(R)}$ 0.1% 첨가구, Avilamycin첨가구 그리고 대조구 순이었다. 산란 지수도 산란율과 같은 경향이었으나 통계적 유의차는 없었다(P>0.05). 난중, 연파란율, 사료 섭취량 및 사료 요구율과 계란의 품질 평가 항목인 난각 강도, 난각 두께, 난각 색깔, Haugh unit 및 난황 색깔에서 처리간에 유의한 차이는 없었다(P>0.05). 장내용물 중 Cl. perfringens와 E. coli의 수는 첨가구들이 대조구에 비해 적었고 Lactobacilli의 수는 Herb Mix $Gold^{(R)}$ 첨가구들이 높은 경항을 보여주었다(P>0.05). 백혈구 (WBC) 수와 heterophil(HE)의 경우 첨가구들이 대조구에 비해 적었으며 림프구 (LY)의 경우 모든 첨가구들이 높은 경향을 보였다(P>0.05). Stress indicator로 알려진 HE/LY는 Herb Mix $Gold^{(R)}$ 0.2% 첨가구에서 낮은 경향을 나타냈다(P>0.05). 적혈구나 헤모글로빈은 모든 첨가구들이 대조구에 비해 증가하는 경향을 보였으며 특히 Herb Mix $Gold^{(R)}$ 0.2%구가 높은 경향을 나타내었다(P>0.05). 결론적으로 산란 생산성 개전을 위해 Herb Mix $Gold^{(R)}$ 0.2% 첨가가 적당하다고 사료되며, 이는 선발 원료로 강화된 한방제제가 장내 미생물 균총, 혈액 내 백혈구 및 적혈구 수에 유익하게 미치는 영향에 기인한 것으로 사료된다. This study was conducted to investigate the effects of graded levels of a herbal recipe(Herb Mix $Gold^{(R)}$, Herb BIO Co.) supplemented to a commercial layer diet. The Herb Mix $Gold^{(R)}$ is an improved recipe of Herb $Mix^{(R)}$, fortified with Angelica gigas, Discorea japonica and Ligusticum jeholense. A total of 720 layers (Hy-Line Brown) of 45 wks old were assigned to one of six treatments; control, 0.2% Herb $Mix^{(R)}$, 0.1%, 0.2%, and 0.3% Herb Mix $Gold^{(R)}$, and 6 ppm Avilamycin. Each treatment had 6 replicates of 20 birds each housed in 2 birds cages. Birds were fed diets and water ad libitum for 5 weeks. Hen-day egg production was significantly (P<0.05) different among treatments. Herb Mix $Gold^{(R)}$ 0.2% treatment showed the highest egg production followed by Herb Mix $Gold^{(R)}$ 0.3%, Herb $Mix^{(R)}$ 0.2%, Herb Mix $Gold^{(R)}$ 0.1%, Avilamycin 6 ppm and the control. Hen-housed egg production, egg weight, soft and broken egg ration, feed intake, feed conversion ratio, shell strength, shell thickness, shell color index, Haugh unit and yolk color index were not significantly different among treatments. Nor was cfu of Cl. perfringens and E. coli and Lactobacilli in the small intestinal content significantly different among treatments. The number of white and red blood cells, hemoglobin, heterophil, lymphocyte, thus heterophil to lymphocyte ratio were not significantly modified. It was concluded that Herb Mix $Gold^{(R)}$ at the level of 0.2% in the layer diet improves laying performance.

브로일러 병아리에 있어서 밀기울 , 칼슘 및 소금의 상호작용에 관한 연구

이진희,한인규,백인기 ( J . H . Lee,In K . Han,I . K . Paik ) 한국축산학회 1985 한국축산학회지 Vol.27 No.10

In order to study the interrelationships of dietary such factors as wheat bran, calcium and salt a total number of 480 broiler chicks of Hisex-Hibro strain was fed 3 × 2 × 2 factorially arranged experimental diets for 28 days. In the present experiment were used 3 levels of dietary wheat bran (0, 5, 10%), 2 levels of dietary calcium (0.9, 1.5%) and two supplemental salt levels (0.3, 1.0%). Body weight gain, daily feed intake, feed efficiency and gall bladder weight were measured. And bone calcium content, bone ash content, serum calcium content and serum sodium content were also measured. The results observed in the present study are summarized as following: 1. Body weight gain was gradually and insignificantly decreased as dietary level of wheat bran was increased, and dietary levels of calcium and salt failed to show any significant effects on the body weight gain. But high Ca × high salt gained slightly more body weight than low Ca × low salt. 2. Feed intake was significantly decreased (p$lt;0.01) as the level of wheat bran was increased. Interaction of wheat bran with dietary levels of salt or calcium were found significant (p$lt;0.01); increased level of wheat bran resulted in decreased feed intake when salt level was lowered or when calcium level was increased. 3. Feed efficiency was not affected by any combination of dietary level of the experimental materials, although high Ca × high salt groups showed slihtly improved values. 4. Weight of gall bladder was increased as dietary level of wheat bran was increased or as dietary level of calcium. was decreased (p$lt;0.05), and high salt × high Ca showed heavier gall bladder weight than low salt × low Ca. 5. Bone calcium content was not significantly affected by treatments, except decrease (p$lt;0.05) with high level of wheat bran. Bone ash retention was increased with high dietary salt level and it was more pronounced with high calcium level. 6. Serum calcium content was increased as the dietary levels of wheat bran and calcium were increased (p$lt;0.01). Serum calcium with low calcium × high salt was decreased, but with high calcium × high salt decreased. Serum sodium level was increased with increased dietary levels of calcium or salt (P$lt;0.01), and it was affected by dietary wheat bran level (p$lt;0.01) and seems to be due to interaction between dietary levels of wheat bran and salt.

형질 전환 Aspergillus oryzae의 첨가가 산란계의 생산성, 계란 품질 및 장내 미생물 변화에 미치는 영향

정병윤,박세원,백인기,조경진,이상석,Jung, B.Y.,Park, S.W.,Paik, I.K.,Cho, K.J.,Lee, S.S. 한국축산학회 2005 한국축산학회지 Vol.47 No.4

본 연구는 메주에서 순수 분리된 메주곰팡이의 대표적 균종인 황국균(Aspergillus oryzae; AO)으로 만든 AO culture와 Salmonella 병원특이 유전자를 삽입한 형질전환 AO(TAO) culture가 산란계의 생산성, 계란 품질 및 장내 미생물 균총에 미치는 영향을 규명하고자 실시하였다. 39주령 산란계 Hy-line Brown 840수를 공시하여 대조구, AO culture 0.2%와 0.5%, TAO culture 0.2%와 0.5%, UV를 조사하여 단백질 분해효소를 감소시킨 mutant에 Salmonella 병원 특이 유전자를 삽입한 형질전환 AO(TMAO) culture 0.2%와 0.5% 첨가구들을 비교하였다. 각 첨가구는 6반복, 반복당 20수씩, 한 케이지 당 2수씩 배치하여 8주간 사양시험을 실시하였다. 사양시험 결과 모든 산란 생산성 및 계란 품질 관련 조사항목에서 처리간에 유의한(P<0.05) 차이가 있었다. TAO culture 0.2% 첨가구가 산란 생산성에 있어서 유의적으로 가장 높았으며, 난중은 모든 AO 첨가구들이 대조구에 비해 유의적으로 낮거나 낮아지는 경향을 나타내었다. 연파란율은 TMAO culture 0.5% 첨가구가 가장 낮았다. 사료섭취량과 사료요구율은 대조구와 모든 AO 첨가구들간에 유의적 차이가 나타나지 않았다. 난각 강도는 대조구 보다 모든 AO 첨가구들에서 유의적으로 높게 나타났으며, 난황 색도는 TMAO culture 0.5% 첨가구에서 가장 높았다. 난각 색도와 Haugh unit은 대조구와 모든 AO 첨가구들간에 유의적 차이가 나타나지 않았다. 장내 미생물 균총(Salmo- nella spp., E. coli. Lactobacilli spp.)에서는 유의적(P<0.05) 차이가 있었다. AO culture 첨가에 의해서 Lactobacilli spp.의 수는 증가되고, E. coli 및 Salmonella spp.의 수는 감소되었다. 특히 TAO와 TMAO culture 첨가구에서는 AO culture 첨가구보다 Salmonella spp. 및 E. coli 억제효과가 컸으며 첨가수준(0.5% vs 0.2%) 간에는 유의한 차이가 없었다. 결론적으로 TAO culture 0.2% 첨가는 산란 생산성 증가에 효과가 있었으며 TAO 및 TMAO culture 0.2% 첨가는 장내 E. coli 및 Salmonella spp.의 감소에 유의한 효과가 있었다. An experiment was conducted to investigate the dietary effects of a transgenic Aspergillus oryzae(AO) culture on the performance, egg quality and intestinal microflora of layers. A total of 840 Hy-line Brown layers of 39wks old were assigned to one of the following 7 dietary treatments: control(C), C+0.2% AO culture, C+0.5% AO culture, C+0.2% transgenic AO culture, C+0.5% transgenic AO culture, C+0.2% transgenic mutant AO culture, and C+0.5% transgenic mutant AO culture. The transgenic AO was made by inserting Salmonella gallinarum gene to AO. And the transgenic mutant AO was made by inserting Salmonella gallinarum gene to mutant AO which was mutated by UV irradiation. Each treatment was replicated six times with 20 birds housed in 2 bird cage. Twenty birds units were arranged according to completely randomized block design. Feeding trial lasted for 8wks under 16 hour lighting regimen. Laying performance and egg quality were significantly(P<0.05) affected by the treatments. Transgenic AO culture supplementation at the level of 0.2% significantly increased egg production, while its egg weight was significantly decreased compared to that of the control. Feed intake and feed conversion ratio(FCR) were not significantly different among the AO treatments and the control. The eggshell strength of the AO treatments was significantly higher than that of the control. Transgenic mutant AO culture supplemented at the level of 0.5% significantly increased egg yolk color. Intestinal microflora were significantly(P<0.05) affected by the treatments. The cfu of Lactobacilli spp. significantly increased and those of Salmonella species and E. coli decreased in the AO treatments. The transgenic AO and transgenic mutant AO culture were more effective than the AO culture in reducing the cfu of Salmonella species and E. coli. It is concluded that supplementation of the transgenic AO culture at the level of 0.2% could be recommended for the improvement of egg production. Supplementation of transgenic AO or transgenic mutant AO culture at 0.2% level effectively controlled intestinal Salmonella species population.