텍스트 마이닝을 이용한 WZT 연구 동향 분석 - 국내와 국외를 비교하며

김수한,김경열,조진형 한국실천공학교육학회 2025 실천공학교육논문지 Vol.17 No.1

본 연구의 목적은 WZT(Wartegg-Zeichentest, 발테그 그림검사)의 연구 동향을 텍스트 마이닝을 활용하여 분석하는 것이다. 본 연구는 크롤링으로 국내 논문 정보를 RISS, DBpia에서 수집하는 것으로 시작한다. 이후 단어 단위로 데이터를 정제하여 DTM 을 만들고 TF-IDF와 Word2Vec을 사용하여 단어들의 연관성을 분석한다. 분석 후 WordCloud와 단어 네트워크를 이용하여 결과 를 시각화한다. 국외의 논문 정보는 Google Scholar에서 수집하고, 국내 논문 정보와 같은 단계를 거친다. 그리고 국내와 국외의 WZT에 대한 연구 동향을 비교한다. 연구 결과를 보면 국내와 국외 둘 다 WZT를 학문적 가치가 있는 검사 도구로 본다는 공통 점이 있다. 차이점은 국내는 WZT를 주로 교사가 교육 목적으로 학생을 알아가는 용도로 사용하는 것, 국외는 성격을 연구하는 것 그 자체에 의의를 두고 있음을 알 수 있다. The purpose of this study is to analyze the research trends of the Wartegg Zeichentest (WZT) using text mining. This study begins by collecting domestic research information from RISS and DBpia through web crawling. Subsequently, data is refined at the word level to create a Document-Term Matrix (DTM), and the relationships between words are analyzed using TF-IDF and Word2Vec. After the analysis, the results are visualized using WordCloud and a word network. Research information from abroad is collected from Google Scholar and undergoes the same steps as domestic research information. Finally, the research trends of WZT in do mestic and foreign contexts are compared. The results show that both domestic and foreign researchers view the WZT as a valuable diagnostic tool. However, there is a difference in that domestic researchers primarily use the WZT for teachers to understand their students for educational purposes, while foreign researchers place greater emphasis on the study of personality itself.

Photo-curable MSSQ films for low-k application

김수한,류이열,한준희,차국헌 한국고분자학회 2004 한국고분자학회 학술대회 연구논문 초록집 Vol.29 No.2

컴퓨터 사용시간에 따른 경추각도의 변화

김수한,김고운,김지성 한국엔터테인먼트산업학회 2013 한국엔터테인먼트산업학회논문지 Vol.7 No.2

This study was performed to investigate the change of degrees of cervical vertebra followed university students' using and hours of computer. 92 persons who agreed with the experiment were selected as participants. They were x-rayed and then measured degrees of cervical vertebra by Cobb and ARA methods and checked about hours using computer and the Internet addiction by the questionnaire. To look into the correlation between degrees of cervical vertebra and the questionnaire, frequency analysis, independent samples, t-test and analysis of variance were used. As a result of the study, the response that '3~5 hours per a day' was gotten the most score with 38% and another answer that 'more than 5 hours' was the second with 34.4% at the questions about hours using computer. About the items related to the Internet addiction, 73.3% students was shown the tendency of the addiction and they have pain in the followed order on neck(34.1%), hands/wrists(26.8%), shoulders(24.4%). Also, the degrees of cervical vertebra of students who have pain and fatigue was decreased and lordosis of cervical vertebra appears from students who were classified as the Internet addiction (p<.05). From this research, we could know some facts that physical fatigue and pain are increased as using more computers and it can cause the changes to degrees of cervical vertebra.

임베디드 시스템을 위한 MPEG-4 동영상 플레이어 구현

김수한,이명원,장성태 한국정보처리학회 2007 정보처리학회논문지D Vol.14 No.4

임베디드 시스템 기술 발전으로 차세대 컴퓨터로서 웨어러블 컴퓨터가 등장하게 되었다. 아직까지 이러한 웨어러블 컴퓨터는 하드웨어와 소프트웨어 성능의 한계로 응용에 제한을 가지고 있다. 본 연구에서는 국내에서 개발한 임베디드 웨어러블 컴퓨터에서 멀티미디어 응용 서비스가 가능하도록 하는 MPEG-4 비디오 플레이어를 구현하였다. 본 논문은 ETRI에서 개발한 손목시계형 웨어러블 컴퓨터인 WPS(Wearable Personal Station) 상에서의 MPEG-4 동영상 플레이어 구현에 대해 기술한다. A wearable computer has appeared as the next generation computer with the development of embedded system technique in our country, although it has not been applicable well since the hardware and software capabilities are limited for multimedia service. We have implemented a MPEG-4 video player to provide with such multimedia application service using the embedded systems. This paper illustrates the development of MPEG-4 video player operating on the wearable computer named WPS(Wearable Personal Station), the wristwatch PC developed at ETRI.

The Additive Impact of Transbronchial Cryobiopsy Using a 1.1-mm Diameter Cryoprobe on Conventional Biopsy for Peripheral Lung Nodules

김수한,목정하,조은정,김미현,이광하,김기욱,박혜경,이민기,엄중섭 대한암학회 2023 Cancer Research and Treatment Vol.55 No.2

Purpose The diagnostic yield of transbronchial biopsy (TBB) using radial probe endobronchial ultrasound (RP-EBUS) is 71%, which is lower than that of transthoracic needle biopsy. We investigated the performance and safety of sequential transbronchial cryobiopsy (TBC) using a novel 1.1-mm diameter cryoprobe, after conventional TBB using RP-EBUS for the diagnosis of peripheral lung lesions (PLLs). Materials and Methods From April 2021 to November 2021, 110 patients who underwent bronchoscopy using RP-EBUS for the diagnosis of PLL ≤ 30 mm were retrospectively included in our study. All records were followed until June 2022. Results The overall diagnostic yield of combined TBB and TBC was 79.1%, which was higher than 60.9% of TBB alone (p=0.005). The diagnostic yield of sequential TBC was 65.5%, which increased the overall diagnostic yield by 18.2%. The surface area of tissues by TBC (mean area, 18.5 mm2) was significantly larger than those of TBB by 1.5-mm forceps (3.4 mm2, p < 0.001) and 1.9-mm forceps (3.7 mm2, p=0.011). In the multivariate analysis, PLLs with the longest diameter of ≤ 22 mm were found to be related to additional diagnostic benefits from sequential TBC (odds ratio, 3.51; 95% confidence interval, 1.043 to 11.775; p=0.042). Complications were found in 10.5% of the patients: pneumothorax (1.0%), infection (1.0%), and significant bleeding (8.6%). None of the patients developed any life-threatening complications. Conclusion Sequential TBC with a 1.1-mm cryoprobe improved the performance of conventional TBB using RP-EBUS without serious complications.

Effect of Porosities on the Mechanical Properties of Nanoporous Organosilicate Thin Films

김수한,차국헌,한준희,박용준 한국고분자학회 2006 한국고분자학회 학술대회 연구논문 초록집 Vol.2006 No.4

Polydispersity 조건에서 Crossflow 방식 정밀여과 공정의 케이크 형성 특성

김수한,박희경 대한상하수도학회 2003 상하수도학회지 Vol.17 No.6

Cake formation at polydisperse condition has been studied experimentally and compared with that at monodisperse condition reported in previous researches. Kaolin and two kinds of CaCO3 are used as particles and polysulfon hollow fiber microfilter is used as membrane for the experiment. This study evaluates the effects of particle size and shear rate which affect cake formation in crossflow microfiltration. EDSD(Effective Diameter for Shear-induced Diffusion) is used as a representative particle size for particles with various sizes. At polydisperse condition, the effect of shear rate on cake formation is similar to those at monodisperse condition. Cake formation increases with the decrease of shear rate and the increase of feed concentration. But polydispersity makes the quantitative differences of the effects between monodisperse and polydisperse condition. Comparing all the effects of particle size and shear rate on cake formation, this study indicates that particle size is a crucial influential factor for cake formation at polydisperse condition and suggests that increasing particle size is the most efficient way to decrease cake formation.

Crossflow 방식 응집-정밀여과 공정의 케이크층 저감 메커니즘

김수한,박희경 대한상하수도학회 2003 상하수도학회지 Vol.17 No.4

Cake layer in crossflow microfiltration(CFMF) can be reduced by coagulation, enhancing membrane flux. This is because enlarging particle size by coagulation increases shear-induced diffusivity and the back-transport of rejected particles. However it is known that the enlarged particles are disaggregated by the shear force of the pump while passing through it. This study is to look at the disaggregation in relation with cake layer reduction. Kaolin and polysulfon hollow fiber microfilter are used for experiment. The reduction of cake resistance by coagulation is observed in a range of 17% to 53% at the various coagulation conditions. The particle size analysis results of the experiments show that aggregated particles in feed are completely disaggregated by pump but re-aggregation of particles occurs in membrane. This suggests that the re-aggregation of particles is critical to cake reduction and flux enhancement, since the aggregated particles are completely broken. The mechanisms for re-aggregation in membrane are the same with those for coagulation in feed tank. Charge neutralization is better for CCFMF than sweep flocculation although it has two drawbacks in operation.

‘월북’ 공무원 피살 사건의 재구성

김수한 북한연구소 2020 북한 Vol.- No.587

통근시간이 직장여성의 결혼생활 만족에 미치는 영향

김수한 한국여성정책연구원 2020 여성연구 Vol.107 No.4

통근은 맞벌이 여성의 삶의 질과 만족에 어떤 영향을 줄까? 한국 직장인들은 OECD 국가에서가장 긴 시간을 통근에 사용하고 있지만, 통근이 삶의 만족에 미치는 영향에 대한 학술적 분석은적었다. 이 연구는 2007년부터 2018년까지 수집된 여성가족패널을 이용하여 통근시간의 증대가맞벌이 여성의 결혼생활 만족에 미치는 영향을 분석하였다. 수도권에 거주하는 1,700여 명의 기혼직장여성을 분석한 이 연구에서 통근시간과 결혼생활 만족은 역(逆) U자형의 관계를 보였다. 통근시간은 맞벌이 여성의 결혼생활 만족도를 향상시키지만, 일정한 시점을 넘어 장시간 통근으로 접어들면 통근시간 증가는 결혼생활 만족도를 감소시킨다. 통근에 43분 정도의 시간을 사용하는 여성의결혼생활 만족도가 가장 높았고, 통근시간이 하루 평균 86분을 초과하면 증가하는 시간만큼 결혼생활에 대한 만족이 감소했다. 이 연구는 통근이 맞벌이 직장여성의 삶에 미치는 영향에 관한 이론적논의와 패널자료를 통한 분석을 통해 학술적, 정책적 기여를 제공한다.