시설하우스의 자·수동 개폐기의 비교분석

박병길 충남대학교 농과대학 2001 논문집 Vol.- No.7

비용매 알코올 응고조를 이용한 폴리술폰 막의 상전이 거동 및 모폴로지 특성 연구

박병길,공성호,남상용 한국막학회 2005 멤브레인 Vol.15 No.4

본 연구에서는 NMP용매를 사용하여 폴리술폰 용액을 캐스팅 하고 상전이 방법으로 비대칭성 폴리술폰 막을 제조하였다. 비대칭성 폴리술폰 막 제조 시 응고조로 물과 알코올(메탄올, 에탄올, 프로판올) 수용액을 사용하였다. 폴리술폰 막의 수투과도와 다공도를 조절하는 인자로 서로 다른 용해도 계수를 갖는 알코올의 영향에 대한 특성을 평가하였다. 알코올 응고조에서 제조된 비대칭성 폴리술폰 막은 전형적인 sponge-like 구조를 나타내었으며 물 응고조에서 제조된 폴리술폰 막은 알코올 응고조에서 제조된 폴리술폰 막보다 낮은 수투과도를 나타내었다. 물과 알코올의 혼합 응고조에서 생성된 비대칭성 폴리술폰 막은 finger-like 구조와 sponge-like 구조가 혼재되어 있음을 확인할 수 있었다. 즉, sponge-like 구조의 폴리술폰 막은 상전이 속도가 감소함에 따라 다공도가 현저하게 감소함을 알 수 있었다. 그 결과 물 응고조에서 제조된 폴리술폰 막의 수투과도는 14.7 psi에서 164 [L/m2hr] 이고 메탄을 응고조와 에탄을 응고조에서 제조된 폴리술폰 막은 각각 56 [L/m2hr]과 30 [L/m2hr]를 나타내었다. In this study, asymmetric polysulfone membranes were prepared by the phase inversion method and the casting solutions were containing N-methyl-2-pyrrolidone (NMP) as a solvent. Deionized water and various alcohols(methanol, ethanol, and propanol) were used as a coagulation medium in preparing asymmetric polysulfone membranes. This study investigates the effect of alcohol coagulants having different solubility parameters as a pore-former on the construction of porous structures and their pure water permeation properties. Asymmetric polysulfone membranes immersed in the pure alcohol coagulation bath solution showed the typical sponge-like structures and the reduced water permeability as compared with those of polysulfone membranes precipitated in the pure water coagulation bath solution. In the water/alcohol mixtures, asymmetric polysulfone membranes showed the finger-like structures with the sponge-like structures. Therefore, the sponge-like structure of polysulfone membrane was formed under the delayed demixing systems while the porosity of membrane was decreased significantly. The water permeability of polysulfone membrane precipitated in the pure water coagulant showed 164 [L/m2hr] at 14.7 psi. In case of polysulfone membranes prepared in the pure methanol and ethanol coagulant, they showed the water permeability of 56 and 30 [L/m2hr], respectively.

레지던스호텔 직원들이 지각하는 임파워먼트가 조직몰입, 고객지향성에 미치는 영향

박병길,이영우 한국호텔리조트학회 2012 호텔리조트연구 Vol.11 No.1

This study has been carried out to empirically investigate the effects of empowerment perceived by residence hotels on organizational commitment and customer orientation, and thus to provide basic data on effective personnel management, based on the investigation. The findings of this study suggest that giving importance to self-determination/impact rather than meaning/competence, which are subcomponents of empowerment, leads to increased levels of organizational commitment and customer orientation and that giving importance to affective commitment rather than continuance commitment for organizational commitment results in an increased level of customer orientation. Accordingly, it is suggested in this study that, for the sake of fostering enhanced levels of customer satisfaction and orientation on the part of residence hotels, it is crucial to develop a full-fledged mentoring programme and a reasonable incentive system which will improve employee loyalty towards the organization,and thereby to establish a systemized, empowered personnel management system.

소형전동기 기술동향

박병길 대한전기협회 1984 대한전기협회지 Vol.- No.86

반추축산(反芻畜産, RUMINANT FARMING)

박병길 한국낙농육우협회 1985 낙농·육우 Vol.47 No.-

레지던스호텔 직원들이 지각하는 임파워먼트가 조직몰입, 고객지향성에 미치는 영향

박병길 ( Byung Gil Park ),우성근 ( Sung Keun Woo ),이영우 ( Young Woo Lee ) 한국호텔리조트학회(구 한국호텔리조트카지노산학학회) 2012 호텔리조트연구 Vol.11 No.2

This study has been carried out to empirically investigate the effects of empowerment perceived by residence hotels on organizational commitment and customer orientation, and thus to provide basic data on effective personnel management, based on the investigation. The findings of this study suggest that giving importance to self-determination/impact rather than meaning/competence, which are subcomponents of empowerment, leads to increased levels of organizational commitment and customer orientation and that giving importance to affective commitment rather than continuance commitment for organizational commitment results in an increased level of customer orientation. Accordingly, it is suggested in this study that, for the sake of fostering enhanced levels of customer satisfaction and orientation on the part of residence hotels, it is crucial to develop a full-fledged mentoring programme and a reasonable incentive system which will improve employee loyalty towards the organization, and thereby to establish a systemized, empowered personnel management system.

레지던스호텔 종사원의 임파워먼트, 직무만족, 조직몰입 및 고객지향성의 구조적관계

박병길 ( Byung Gil Park ) 한국호텔리조트학회(구 한국호텔리조트카지노산학학회) 2014 호텔리조트연구 Vol.13 No.1

This study is the empowerment of Residence Hotel employees job satisfaction and organizational commitment and customer orientation and to verify the causal impact on the future management of the Residence Hotel was to provide useful information on the environment. Based on the results of empirical analysis and implications of this research by presenting the results are as follows: First, factor analysis measurement model, the dimension of the configuration they were reasonable, empowerment of the individual care / influence, job satisfaction factors of the job itself, had the highest explanatory power. Second, empowerment of Residence Hotel employees significant impact on the organizational commitment hypothesis that the primary cause of a subset of the self-determination, empowerment and influence, and the meaning and role of the hypothesis that higher organizational commitment increase significant influence on the organizational commitment showed the effect.Third, the self-determination and influence will have a significant effect on job satisfaction hypothesis 2, job itself, appeared to be significant in the promotion and compensation, the job itself, the meaning and role, promotion, compensation, associate relations significantly affecting both showed that. This analysis of the Residence Hotel employees satisfied with the overall business, and pay, allowances, and wages that are perceived as a process can be seen. Finally, organizational commitment of workers Residence significant impact on the customer orientation was not analyzed that. This analysis of the Residence Hotel employees emotional and continuous commitment to meet the needs of the customer-oriented, and cooperative behavior not significantly affect the means.

아파트지구 토지이용계획의 문제점 분석과 대상조합원의 셀링포인트에 관한 연구-반포 저밀도아파트지구 사례를 중심으로-

오동훈,박병길 한국주택학회 2001 주택연구 Vol.9 No.1

직접메탄올 연료전지용 유무기 하이브리드 전해질 : 술폰화된 SEBS (SSEBS)-clay 하이브리드 막의 제조 및 물성

남상용,박병길,공성호,김영진 한국막학회 2005 멤브레인 Vol.15 No.2

본 연구에서는 SEBS와 여러 가지의 유기화물로 처리된 MMT type의 clay를 이용하여 SSEBS-clay 하이브리드 막을 용액법으로 제조하였다. clay의 함량은 5 phr로 고정하였다. 용액법을 사용하여 clay를 SEBS에 분산시켰으며, 제조된 SSEBS-clay 하이브리드에서 clay의 특성피크가 완전히 박리되거나 이동하는 XRD 결과로부터 고분자의 clay 층간삽입을 확인하였다. Clay의 종류에 따라서 제조된 SSEBS-clay 하이브리드 막의 가스투과도, 기계적 물성 및 열적 성질을 측정하였다. SSEBS-clay 하이브리드 막은 clay 자체의 도입과 층간거리의 확대로 기체분자의 tortuosity를 증가시켜서 가스투과도를 저하시키는 것을 확인하였다. Sulfonated poly(styrene-ethylene-butadiene-styrene) (SSEBS)-clay hybrid membranes were prepared by solution method. In the preparation of hybrid membrane, the amount of clay content was fixed to 5 phr and montmorillonite (MMT) was fully exfoliated by the SEBS and it was confirmed by X-ray diffraction method. D-spacing of the characteristic peak from MMT plate in WAXD was fully diminished. Gas permeability, mechanical properties and thermal properties of the SSEBS-clay hybrid membranes were investigated. Gas permeability through the SSEBS-clay hybrid membranes decreased due to increased tortuosity made by exfoliation of clay in SEBS.

휴폐광산 지역에서 폐석의 중금속 존재 형태와 지화학적농축계수 평가

김휘중,박병길,공성호,이재영,옥용식,전상호,Kim Hee-Joung,Park Byung-Kil,Kong Sung-Ho,Lee Jai-Young,Ok Yong-Sik,Jun Sang-Ho 한국지하수토양환경학회 2005 지하수토양환경 Vol.10 No.6

남한강 상류지역의 금속광산인 거도, 만정, 조일광산은 1988년 석탄광산합리화 사업과 더불어 폐광되었으며, 휴$\cdot$폐광된 이후 다량의 광산 폐기물을 방치하여 주변환경을 오염시키고 있는 실정이다. 그러나 광미, 폐석 등의 이동에 의한 주변의 토양오염에 대한 정량적 평가가 없기 때문에 이들 광산폐기물에 의한 오염정도를 확인하기 어렵다. 따라서 폐광된 거도, 만정, 조일 광산의 광산 폐석에 의한 수질 오염 가능성 평가를 위해 각 광산에서 폐석 시료를 채취하였으며, HCl 처리 농도에 따라 지화학적 농축 계수(Index of geoaccumulation), 중금속 존재 형태와 이동성에 관하여 조사하였다. 카드뮴, 납, 아연, 구리, 니켈 그리고 크롬의 지화학적 농축 계수는 각각 6, $4\~6,\;0\~6,\;4\~5$, 2, 0을 나타냈다. 광산 폐석에서 카드미뮴, 납, 아연, 구리의 지화학적 농축계수 분석을 통하여 이러한 지역이 상당한 오염 가능성을 알 수 있었다. 광산 폐석에서 중금속의 존재 형태는 구리의 경우 유기물 형태, 납은 탄산염 형태, 니켈과 아연은 잔류상 형태로 나타났다. Several metalliferous including Guedo mine, Manjung mine and Joil mine located at the upper watershed of Namhan river, were abandoned or closed since 1988 due to the mining industry promotion policy and thus disposed an enormous amount of mining wastes without a proper treatment facilities, resulting in soil pollution. In this research, total and fractional concentrations of heavy metals in mining wastes were analyzed and accordingly the degree of soil pollutions in the abandoned mine area were quantitatively assessed employing the several pollution indices. The mining waste samples from Guedo mine, Manjung mine and Joil mine recently abandoned were collected for the evaluation of the potential of water pollution by mining activities. Index of geoaccumulation fractional composition and removal efficiency of some heavy metals by different concentration of HCl treatment were analyzed. Index of geoaccumulation of Cd, Pb, Zn, Cu, Ni and Cr are 6, $4\~6,\;0\~6,\;4\~5$, 2 and 0 respectively. The index of geoaccumulation of Cd, Pb, Zn and Cu reveals the mining wastes has high pollution potential in the area. According to sequential extraction of metals in the mine wastes organic fraction of Cu, reducible fraction of Pb, residual fraction of Ni and Zn were the most abundant fraction of heavy metals in mining wastes.