골프라운딩 참여자의 여가제약협상전략과 레크리에이션 전문화, 회복환경지각 및 장소애착감의 관계

김범준,김재형 한국코칭능력개발원 2019 코칭능력개발지 Vol.21 No.1

본 연구는 서울, 인천, 강원, 경기, 대전, 대구, 광주지역에 소재한 골프연습장 이용객을 대상으로 골프라운딩 참여자의 여가제약협상전략과 레크리에이션 전문화, 회복환경지각 및 장소애착감에는 어떠한 관계가 있는지를 규명하는데 목적을 두고 진행되었다. 본 연구는 SPSS 18.0과 AMOS 18.0을 이용하여 예비조사를 통해 탐색적 요인분석과 신뢰도분석을 실시하였고, 그 후 본조사를 통해 확인적요인분석과 빈도분석 그리고 상관관계분석을 실시하였다. 그 후 모형을 설정하여 구조방정식모형(SEM)을 통하여 변인간의 인과적 관계를 분석하였다. 이러한 연구방법과 연구모형 검증을 바탕으로 한 본 연구의 결과는 다음과 같다. 첫째, 골프참여자의 여가제약협상전략은 레크리에이션 전문화에 영향을 미치는 것으로 나타났다. 둘째, 여가제약협상전략은 장소애착감에 영향을 미치지 않는 것으로나타났다. 셋째, 여가제약협상전략은 회복환경지각에 영향을 미치는 것으로 나타났다. 넷째, 레크리에이션 전문화는 장소애착감에 영향을 미치는 것으로 나타났다. 다섯째, 회복환경지각은 장소애착감에 영향을 미치는 것으로 나타났다. 여섯째, 여가제약협상전략과 장소애착감의 관계에서 레크리에이션 전문화는 부분적으로 매개하는 것으로 나타났다. 일곱째, 여가제약협상전략과 장소애착감의 관계에서 회복환경지각은 완전히 매개하는 것으로 나타났다.

Oxidative treatment of organics in RO concentrate from a wastewater reclamation plant: Comparison of different oxidation processes

김범준,박수연,강현석,이창하 한국공업화학회 2020 한국공업화학회 연구논문 초록집 Vol.2020 No.-

There has been increasing interest in wastewater reclamation and reuse, as water supply reliability is continuously threatened. The reverse osmosis (RO) process is usually employed to produce high quality reclaimed water in the wastewater reclamation plant. However, the RO concentrate containing refractory organics becomes problematic in both cases of direct discharge and returning to the wastewater treatment plant. In this study, different oxidation technologies including the conventional Fenton process, UV/H2O2, ozonation, and electrochemical oxidation processes were tested for the treatment of organics in the RO concentrate from a wastewater reclamation plant. The removal of TOC and micropollutants in the RO concentrate was examined, and the treatment costs were compared for the different oxidation processes.

Deep neural network 기반 오디오 표식을 위한 데이터 증강 방법 연구

김범준,문현기,박성욱,박영철,Kim, Bum-Jun,Moon, Hyeongi,Park, Sung-Wook,Park, Young cheol 한국음향학회 2018 한국음향학회지 Vol.37 No.6

In this paper, we present a study on data augmentation methods for DNN (Deep Neural Network)-based audio tagging. In this system, an audio signal is converted into a mel-spectrogram and used as an input to the DNN for audio tagging. To cope with the problem associated with a small number of training data, we augment the training samples using time stretching, pitch shifting, dynamic range compression, and block mixing. In this paper, we derive optimal parameters and combinations for the augmentation methods through audio tagging simulations.

Wafer-Scale Patterning of Reduced Graphene Oxide Electrodes by Transferand-Reverse Stamping for High Performance OFETs

김범준,이중석,김남희,강문성,유호정,이동렬,오준학,장석태,조정호 한국고분자학회 2013 한국고분자학회 학술대회 연구논문 초록집 Vol.2013 No.4

LTE 이동통신 시스템의 처리율과 무선 채널 상태와의 상관관계 분석

김범준,Kim, Beom-Joon 한국전자통신학회 2015 한국전자통신학회 논문지 Vol.10 No.2

As a representative system of the 4th generation mobile communication system, LTE provides much higher transmission rate than the former ones. Considering the varying property that a wireless environment shows, the transmission rate is influenced very deeply by the wireless channel conditions. The transmission rate is one of the most important attributes that has a primary effect on user's satisfaction of the service provided through the LTE system. After we have selected a few metrics that indicate the wireless channel quality, therefore, we have conducted a measurement for the metrics over the real commercial LTE system. By analyzing the measured results, we have found that the channel quality affect more on the transmission rate as the channel quality becomes poorer.

Optical switching of the Dirac point in graphene multilayer field-effect transistors functionalized with spiropyran

김범준,주필재,전은경,김병수,조정호 한국고분자학회 2013 한국고분자학회 학술대회 연구논문 초록집 Vol.2013 No.4

이산화탄소 개질 반응에서 ZrO₂, CeO₂, Ce-ZrO₂ 조촉매 첨가에 따른 Ni-MgO 촉매의 안정성 향상 연구

김범준,박호룡,노현석 한국공업화학회 2020 한국공업화학회 연구논문 초록집 Vol.2020 No.-

MgO supported Ni catalysts have been widely applied to carbon dioxide reforming (CDR) reaction due to their coke resistance. However, activation of Ni-MgO catalyst consumes considerable energy because of its very high reduction temperature. In this study, ZrO₂, CeO₂, and CeO₂-ZrO₂ promoted Ni-MgO catalysts were prepared via a facile co-precipitation method and applied to the CDR reaction. Among the prepared catalysts, the ZrO₂-promoted Ni-MgO catalyst showed the highest reduction degree and CH₄ conversion. The high catalytic performance of the ZrO₂-promoted Ni-MgO catalyst is mainly due to easier reducibility, high Ni dispersion, and high specific surface area.

대학운동선수들의 스트레스와 탈진의 관계에서 정서조절의 조절효과 검증

김범준,이지항,이동현 대한운동학회 2016 아시아 운동학 학술지 Vol.18 No.3

[PURPOSE] The purpose of this study was to identify the mediating effects of emotional regulation factors on the relationship between stress and burn-out among college athletes. [METHODS] Four hundred fifty basketball, baseball and soccer athletes registered to the Korean Sport Olympic Committee completed the questionnaires, and 419 responses were used for the analyses after the initial screening process. Using the SPSS Ver.20.0, frequency analyses, exploratory factor analyses, validity analyses, correlation analyses, multiple regression analyses, and hierarchical regression analyses were performed. [RESULTS] Results showed, first, competition stress and athletic support factors positively influenced the emotional drain factor of the burn-out. Also, the impersonalization factor was positively influenced by competition, athletic performance, and athletic support while the personal achievement factor was positively influenced by competition and athletic performance. Next, these relationships between stress and burn-out of the college athletes were reported to be mediated by emotional regulation. Specifically, the regulating effect was displayed when competition, social environment and athletic support factors of stress were interacting with the cognitive reappraisal factor of the emotional regulation. [CONCLUSIONS] These results emphasize the importance of emotional regulation ability when college athletes are in the conditions with high levels of stress and burn-out.

원통형 토석류 대책구조물의 배치조건에 따른 에너지 저감효과 분석

김범준,조흥석,한광두,Clarence E. Choi,윤찬영 한국지반환경공학회 2019 한국지반환경공학회논문집 Vol.20 No.10

In this study, in order to analyze the effect of cylindrical baffles on the debris flow energy, small-scale tests were conducted using a flume with cylindrical baffles. Various row numbers of installed baffles were considered as a test condition. To investigate the scale effect of debris flow and cylindrical baffles on flow characteristics, large-scale tests were also performed according to varying row numbers of baffle for same baffle configuration with small-scale tests. Both small- and large-scale test results showed that the increase of row number of baffle increase the energy dissipation effect due to reduction of the velocity and flow depth of debris flow. 본 연구에서는 원통형 대책구조물의 설치조건에 따른 토석류의 에너지 저감효과를 분석하기 위해, 원통형 대책구조물을 설치 가능한 소형 수로를 제작하고 구조물의 종방향 설치 수를 변화시켜가면서 실내모형실험을 수행하였다. 또한 토석류와 대책구조물의 크기변화가 흐름특성에 미치는 영향을 확인하기 위해, 대형수로 내에서 소형수로 실험과 동일한 종방향 구조물을 배치하고, 토석류와 대책구조물의 크기를 증가시켜 실험을 수행하였다. 소형 및 대형수로 실험결과, 원통형 대책구조물의 설치 개수가 증가는 토석류의 유속과 흐름깊이를 감소시켜, 토석류의 에너지 저감효과를 증가시키는 것으로 나타났다.

범용 DSP 칩을 이용한 다중 채널 보청기의 저전력 구현

김범준 한국정보전자통신기술학회 2018 한국정보전자통신기술학회논문지 Vol.11 No.1

본 논문에서는 범용 DSP 칩을 이용한 저전력 다중 채널 보청기 시스템 구현을 제시한다. 본 시스템은 WDRC(Wide Dynamic Range Compression)를 이용한 음향 증폭 알고리즘, 적응 하울링 제거 알고리즘, 단일 채널 잡음 감소 알고리즘을 포함한다. 저전력 구현을 위해 각 알고리듬을 정수연산 프로그램으로 재구성하였고, BelaSigna® 250의 명령어를 사용하여 정수연산 프로그램을 어셈블리 프로그램으로 변환하였다. 실시간 시스템을 사용한 실험을 통해 각 알고리즘의 성능을 확인하였다. 또한 구현 시스템의 클럭을 측정하였으며, 그 결과 전체 신호 처리 블록이 대략 7.02MHz 클럭에서 실시간으로 동작함을 확인하였다. In this paper, we present a low-power implementation of the multi-channel hearing aid system using a general-purpose DSP chip. The system includes an acoustic amplification algorithm based on Wide Dynamic Range Compression (WDRC), an adaptive howling canceller, and a single-channel noise reduction algorithm. To achieve a low-power implementation, each algorithm is re-constructed in forms of integer program, and the integer program is converted to the assembly program using BelaSigna® 250 instructions. Through experiments using the implementation system, the performance of each processing algorithm was confirmed in real-time. Also, the clock of the implementation system was measured, and it was confirmed that the entire signal processing blocks can be performed in real time at about 7.02MHz system clock.