설계․시공일괄방식에 관한 기존 연구 고찰

황재훈(Hwang, Jae-Hoon),이두진(Lee, Doo-Jin),이동은(Lee, Dong-Eun) 대한건축학회 2010 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.30 No.1(구조계)

14C연대 분석을 통해 본 청동기시대 전기 편년 시론

황재훈 ( Jae Hoon Hwang ),양혜민 ( Hye Min Yang ) 호남고고학회 2015 호남고고학보 Vol.50 No.-

While radiocarbon dates in Korean archaeology were heavily criticized during the 1990s, more researchers now began to utilize available absolute dates to construct chronology for the Bronze Age. Nevertheless, researchers still do not agree over the reliability of specific radiocarbon dates that were obtained from different features and contexts along with variable range of standard deviations. Many problems originate from different standards and processes used to deal with the outliers and multiple dates obtained from the same feature. The present study reconsiders a large set of radiocarbon dates for the early Bronze Age using statistical methods to assess the reliability of dates, compare multiple samples and adopt and determine relevant dates. Based on the evaluated radiocarbon dates, we attempt to analyze spatial and temporal distributions of different pottery types, or cultural complexes, which reveals an abrupt change of gradient during the period between 2950 BP and 2830 BP in which coexisting pottery types or complexes underwent significant cultural change.

영산강유역 송국리식 토기의 특징과 변천

황재훈 ( Hwang Jae-hoon ) 호남고고학회 2017 호남고고학보 Vol.56 No.-

The purpose of this study is to investigate regional characteristics and changes in Songguk-ri assemblages, with a particular focus on Songguk-ri type pottery in the Yeongsan River Basin. First, the form, surface treatment techniques, and characteristics of each type of Songguk-ri type pottery from the Yeongsan River Basin were examined. Next, in order to investigate the chronology of Songguk-ri type pottery, the distribution and arrangement of sites in the Yeongsan River Basin and surrounding areas and the types of dwellings and the presence of overlapping features at those sites were analyzed, and the temporal relationships and contemporaneity of pottery types and changes in detailed attributes were examined. Using major developments such as changes in dwelling types and pottery-production techniques and the appearance of new pottery types as criteria, two chronological periods can be distinguished. Additionally, the temporal persistence of certain detailed attributes and certain pottery types and the presence of diagnostic artifacts allowed each period to be further divided into two phases. Period I begins between the 8th and 9th centuries BC with the construction of the Hyuam-ri type dwelling. In Phase 1, some Early-period artifacts have been discovered. Bugle-shaped pottery with protruding bases, egg-shaped pots, straight-rimmed jars, and bowl-shaped pottery are all found in this phase. Traces of surface treatments including wood-scrubbing, hand-pressing, and water treatments are observed on the inner walls and surfaces of vessels. In Phase 2, Hyuam-ri type dwellings continue to dominate, but some variations, such as rectangular dwellings with rounded corners, can be observed at some sites. There is little change in forms and types of pottery, however, the protruding base becomes less pronounced, the vessel walls become thinner, and thin bases and faint traces of combing can be seen on the bodies of some vessels. In Period II, Songguk-ri type dwellings become prevalent throughout the Yeongsan River Basin area, although some Hyuam-ri type dwellings continue to be constructed. The jar and pot-type vessels are replaced with long-bodied and globular vessels. Furthermore, protruding vessel bases are mostly replaced with flat bases and flat bases with rounded edges, and traces of combing become apparent on the surfaces of vessels. Furthermore, vessel lids, a characteristic of one type of Songguk-ri type pottery, first appear. Phases 1 and 2 of this period, which are divided at about the 5th century BC, can be distinguished by vessel lid types. In Phase 2, artifacts related with pottery with clay-band rims become particularly prominent, and considering previous chronologies and recently obtained radiocarbon dates, the lower limit for Phase 2 can be safely set at the mid-4th century BC.

혐기 혼합균주에서 황산염 농도변화에 따른 수소 발효 특성

황재훈(Jae Hoon Hwang),최정아(Jeong A Choi),이종학(Jong Hak Lee),정태영(Tae Young Jeong),차기철(Gi Cheol Cha),송호철(Ho Cheol Song),용보영(Bo Young Yong),김동진(Dong Jin Kim),전병훈(Byong Hun Jeon) 大韓環境工學會 2009 대한환경공학회지 Vol.31 No.6

황산염의 농도변화에 따른 연속 혐기성 수소 발효에 미치는 영향을 고찰하기 위해서 혼합균주를 사용한 완전 혼합형 반응조를 운전하였다. 기질은 글루코오스를 사용하였고, 수리학적 체류시간은 1, 0.5, 0.25 일로 각각 고정하였다. 황산염 농도는 0~20,000 mg/L로 단계별 증가시켰고 pH 5.5로 운전하였다. 실험 결과 높은 황산염 농도에 관계없이 수소가 발생하였고, HRT 0.25일로 짧아짐에 따라 수소 발생이 높게 나타났다. HRT 1, 0.5, 0.25일 각 조건별 수소 생성량과 수소 수율은 2.9, 4.6, 9.4 L/day, 2.0, 1.8, 1.6 mol H₂/mol glucose로 나타났으며, 잔존 황산염 96~98, 95~97, 94~97%로 나타나 황산염 환원이 발생하지 않았다. FISH 결과 모든 조건에서 수소생성균의 분포는 나타났지만 황산염환원균의 분포는 나타나지 않았다. The effect of varying sulfate concentration on continuous fermentative hydrogen production was studied using enriched mixed microflora in continuously fed reactor. Glucose was used as a model substrate for carbohydrates, and hydraulic retention time (HRT) was maintained at 1, 0.5, 0.25 day, respectively. Sulfate concentration was 0~20,000 mg/L and the operating pH was maintained at 5.5. The experimental results indicate that hydrogen production is not affected by high sulfate concentration and shorter HRT of 0.25 day enhance hydrogen production. At HRT 1, 0.5, 0.25 day, the hydrogen production rate and hydrogen yield were 2.6, 4.6, 9.4 L/day, and 2.0, 1.8, 1.6 mol H₂/mol glucose, respectively. Residual sulfate content was 96~98, 95~97, and 94~97% at HRT 1, 0.5, 0.25 day which show that no sulfate reduction occurred in the reactor during the experiments. Results of Fluorescence In Situ Hybridization (FISH) may indicate the presence of HPB (hydrogen producing bacteria) under all experimental conditions. However, SRB (sulfate reducing bacteria) were not found.

다양한 유기성 폐자원에서 바이오 수소 생성 연구

황재훈(Hwang, Jae-Hoon),최정아(Choi, Jeong-A),전병훈(Jeon, Byong-Hun) 한국신재생에너지학회 2009 한국신재생에너지학회 학술대회논문집 Vol.2009 No.11

The effects of various organic wastes on anaerobic fermentative hydrogen production were studied using enriched mixed microflora in batch tests. Rotten fruit, corn powder and organic wastewater enriched with sulfate (up to 1,000 mg/L) were used for experiments. Maximum hydrogen production (547.1 mL) was observed from rotten apple with initial substrate concentration of 132.2 g COD/L. The experimental result on sulfate enriched organic wastewater indicated that hydrogen production is not adversely influenced by relatively high sulfate concentration. Residual sulfate content remained at 96-98 % after 75 hours of reaction, which showed that no major sulfate reduction was occurred at pH 5.3-5.5 in the reactor. The volatile fatty acid (VFA) fractions produced during the reaction was in the order of butyrate > acetate > propionate in all experiments. The results of this study would be useful for controlling the conditions on fermentative hydrogen production using different feedstocks.

충청북도 공공체육시설 배치기준에 관한 연구

황재훈 ( Jae Hoon Hwang ),권영환 ( Yeong Hwan Gwon ),안희철 ( Hui Cheol An ) 충북대학교 건설기술연구소 2014 건설기술논문집 Vol.33 No.1

This project was about a standard of the gym facility re-arrangement in North Chungcheong Province to deal with the issue of increasing citizens` demands to the gym for their leisure. From this study, life zones were selected based on the Perry`s residential neighborhood theory, and the number of needed facilities in each zone was counted. A base present map was completed by using the GIS program. Finally, the modified arrangement standard was suggested on the basis of the existing theory. The type of facility needed in each life zone and its number were determined.

주민의식조사를 통한 체육시설의 선호도 분석 -충청북도를 대상으로

황재훈 ( Jae Hoon Hwang ),윤선근 ( Seon Geun Yoon ),김동준 ( Dong Jun Kim ) 충북대학교 건설기술연구소 2014 건설기술논문집 Vol.33 No.1

The Purpose of this research is to analyze the preference by municipal corporation groups in north chungcheong province on the basis of improvement of residents`s economic standard and increase in the leisure time when the additional arrangement plan of sports facilities is established. Preference analysis through a survey can analyze the standard of living and the current actuality of utilization. This research constructs the base data to enable residents to use sports facilities easily by promoting the plan deliberately and systematically in expanding public sports facilities. Recently, It is one of the very significant elements to construct the base data because accessibility and utilizability of information about sports have increased and the information through the internet spreads rapidly. The purpose is also to contribute to the establishment of systematical and efficient additional arrangement plan of public sports facilities that can maximize an effedt by investing in facilities minimally.

K리그 프로 산하 유소년 축구선수의 열정이 마인드셋에 미치는 영향: 코칭 행동 매개효과

황재훈(Hwang, Jae-Hoon),송용관(Song, Yong-Gwan) 한국코칭능력개발원 2025 코칭능력개발지 Vol.27 No.7

The purpose of this study was to examine the relationship between athletes’ passion and mindset, and to investigate the mediating role of coaching behavior in this relationship. A total of 316 youth football players affiliated with K League professional clubs participated in the study. Participants completed a survey assessing their perceptions of passion, coaching behavior, and mindset. Data were collected using a cross-sectional approach and analyzed through descriptive statistics, reliability and validity testing, correlation analysis, regression analysis, and the Sobel test. The results revealed several meaningful findings. First, harmonious passion had a positive effect on autonomy-supportive coaching behavior and a growth mindset, while showing a negative effect on a fixed mindset. Obsessive passion, in contrast, was positively associated with controlling coaching behavior and a fixed mindset. Second, autonomy-supportive coaching behavior positively predicted a growth mindset, whereas controlling coaching behavior positively influenced a fixed mindset. Third, autonomy-supportive coaching behavior showed a significant partial mediating effect between both types of passion (harmonious and obsessive) and a growth mindset. Conversely, controlling coaching behavior exhibited a negative mediating effect between harmonious passion and a fixed mindset. These findings suggested that the type of passion athletes pursue can significantly influence the formation of cognitive beliefs such as mindset. In particular, fostering a growth mindset required not only harmonious passion but also autonomy-supportive coaching behavior from coaches, highlighting its critical role in athletes’ psychological development.

코치-선수 관계 책무 척도의 타당화

황재훈(Hwang, Jae-Hoon),안현석(Ahn, Hyun-Suk),송용관(Song, Yong-Gwan) 한국코칭능력개발원 2022 코칭능력개발지 Vol.24 No.5

고정식 담체 유무와 반송비에 따른 소규모 하수처리 시스템 내 영양염류 제거 특성

황재훈(Jae Hoon Hwang),조동완(Dong Wan Cho),김충환(Chung Hwan Kim),전병훈(Byong Hun Jeon) 大韓環境工學會 2013 대한환경공학회지 Vol.35 No.6

소규모 하수처리시스템에 다양한 반송비와 고정식 담체를 적용하여 합성폐수에서 질소, 인의 제거를 검토하였다. 담체를 첨가 시 질소의 제거율은 40.1%에서 65.1%로 증가하였으나 COD와 인의 제거에는 영향이 없었다(<5%). 반송을 통해 유량을 2배(2Q)로 증가시킨 경우 질소의 제거율은 7% 정도가 증가하였으나, 인 제거율은 반송비가 증가됨에 따라 31.8에서 26.6%로 감소하였다. 무산소조에서 담체에 부착된 미생물은 약 73.4 mg/cm2로 존재하였으며, FISH분석 결과 탈질 미생물인 Pseudomonas aeruginosa 존재 (약 58%)를 확인하였다. The effect of recycling ratio and fixed media on nitrate and phosphate removal was investigated in a pilot-scale wastewater treatment unit using synthetic wastewater. Addition of fixed media increased nitrate removal from 45 to 58% while no noticeable change was observed for Chemical Oxygen Demand (COD) and phosphate removal (<5%). Nitrate removal efficiency also enhanced (Ca 7%) when the influent wastewater flow was doubled (2Q), however phosphate removal was decreased from 40.9 to 26.6% with the increasing recycling rate. The attached biomass analysis showed the presence of bacteria (73.4 mg/cm2) on the surface of added media in anoxic reactor. Pseudomonas aeruginosa a common denitrifying bacterium dominated the bacterial growth (58%) in the anoxic reactor which was determined using Fluorescence In Situ Hybridization (FISH) analysis.