능동 확장 무선 인프라의 불확실성을 해결하기 위한 UAV/UGV 협업 항법 시스템

최형준,고보성,이민호,김용훈,송진우 제어·로봇·시스템학회 2025 제어·로봇·시스템학회 논문지 Vol.31 No.7

. In this paper, we propose a cooperative UAV/UGV navigation system that utilizes an expandable wireless infrastructure for use in environments where satellite navigation and high-performance sensors are unavailable. Our research focuses on addressing the uncertainties introduced by the concept of active infrastructure extension. Additionally, aerial platforms—unconstrained by ground-based maneuverability—offer advantages in rapidly exploring wide areas within limited timeframes in unknown environments. To enhance mission reliability, we present an algorithm that mitigates limitations encountered during solo aerial missions by enabling coordinated operation with a ground platform.

Usefulness of Early Extracorporeal Shock Wave Lithotripsy in Colic Patients with Ureteral Stones

최형준,정진희,배정범,조민철,이해원,이광수 대한비뇨의학회 2012 Investigative and Clinical Urology Vol.53 No.12

Purpose: To compare efficacy and safety between early extracorporeal shock wave lithotripsy (eESWL) and deferred ESWL (dESWL) in colic patients with ureteral stones and to investigate whether eESWL can play a critical role in improving treatment outcomes. Materials and Methods: A total of 279 patients who underwent ESWL for single radio-opaque ureteral stones of 5 to 20 mm in size were included in this retrospective study. The patients were categorized into two groups according to the time between the onset of colic and ESWL: eESWL (<48 hours, n=153) and dESWL (≥48 hours,n=126). Success was defined as stone-free status as shown on a plain radiograph within 1 month of the first session. Results: For all patients, the success rate in the eESWL group was significantly higher than that in the dESWL group. The eESWL group required significantly fewer ESWL sessions and less time to achieve stone-free status than did the dESWL group. For 241patients with stones <10 mm, all treatment outcomes in the former group were superior to those in the latter group, but not for 38 patients with stones sized 10 to 20 mm. The superiority of eESWL over dESWL in the treatment outcomes was more pronounced for proximal ureteral stones than for mid-to-distal ureteral stones. Post-ESWL complication rates were comparable between the two groups. In the multivariate analysis,smaller stone size and a time to ESWL of <48 hours were independent predictors of success. Conclusions: Our data suggest that eESWL in colic patients with ureteral stones is an effective and safe treatment with accelerated stone clearance. Purpose: To compare efficacy and safety between early extracorporeal shock wave lithotripsy (eESWL) and deferred ESWL (dESWL) in colic patients with ureteral stones and to investigate whether eESWL can play a critical role in improving treatment outcomes. Materials and Methods: A total of 279 patients who underwent ESWL for single radio-opaque ureteral stones of 5 to 20 mm in size were included in this retrospective study. The patients were categorized into two groups according to the time between the onset of colic and ESWL: eESWL (<48 hours, n=153) and dESWL (≥48 hours,n=126). Success was defined as stone-free status as shown on a plain radiograph within 1 month of the first session. Results: For all patients, the success rate in the eESWL group was significantly higher than that in the dESWL group. The eESWL group required significantly fewer ESWL sessions and less time to achieve stone-free status than did the dESWL group. For 241patients with stones <10 mm, all treatment outcomes in the former group were superior to those in the latter group, but not for 38 patients with stones sized 10 to 20 mm. The superiority of eESWL over dESWL in the treatment outcomes was more pronounced for proximal ureteral stones than for mid-to-distal ureteral stones. Post-ESWL complication rates were comparable between the two groups. In the multivariate analysis,smaller stone size and a time to ESWL of <48 hours were independent predictors of success. Conclusions: Our data suggest that eESWL in colic patients with ureteral stones is an effective and safe treatment with accelerated stone clearance.

남녀 국가대표팀의 공격 전술 차이에 대한 탐색적 연구: 2022-2023 FIFA 남녀 월드컵 데이터를 중심으로

최형준,송송이 한국엔터테인먼트산업학회 2025 한국엔터테인먼트산업학회논문지 Vol.19 No.5

본 연구는 2022 카타르 남자 월드컵과 2023 여자 월드컵의 데이터를 기반으로 성별에 따른 축구 공격 전술의 차이를 탐색하고, 주요 전술 지표들이 득점 성과에 미치는 영향을 분석하였다. 연구 결과는 다음과 같다. 첫째, 남자 팀이 여자 팀에 비해 패스 성공률과 드리블 시도 수에서 유의하게 높은 값을 보였으며, 여자 팀은 유효 슈팅 수에서 상대적으로 우위를 나타냈다. 이는 남자 축구가 조직적 빌드업과 개인 돌파 중심의 공격 전술을 활용하는 반면, 여자 축구는 빠른 공격 전환과 적극적 슈팅 중심의 전술을 선호함을 의미한다. 둘째, 다중회귀분석 결과 유효 슈팅 수와 드리블 시도 수가 팀의 득점 성과에 유의한 영향을 미치는 주요 변인으로 나타났으며, 특히 유효 슈팅 수가 가장 높은 설명력을 보였다. 셋째, 로지스틱 회귀분석에서도 패스 성공률, 유효 슈팅 수, 성별이 득점 여부를 예측하는 주요 변인으로 확인되었다. 본 연구는 축구 전술 설계 시 성별 특성을 반영한 맞춤형 전략과 훈련 프로그램 개발의 필요성을 강조하며, 향후 지도자 및 분석가들에게 실질적인 기초 자료를 제공할 수 있을 것으로 기대된다. This study examined gender differences in soccer offensive tactics and analyzed the impact of key tactical indicators on scoring performance using data from the 2022 FIFA Men's World Cup in Qatar and the 2023 FIFA Women's World Cup in Australia and New Zealand. The main findings were as follows: First, male teams demonstrated significantly higher pass success rates and dribbling attempts compared to female teams, whereas female teams recorded substantially higher numbers of shots on target. These results indicate that male soccer tends to emphasize organized build-ups and individual dribbling breakthroughs, while female soccer prioritizes rapid offensive transitions and frequent shooting attempts. Second, multiple regression analysis revealed that shots on target and dribbling attempts significantly influenced total goals scored, with shots on target showing the highest explanatory power among the analyzed indicators. Third, logistic regression analysis identified pass success rate, shots on target, and gender as significant predictors of scoring outcomes, again highlighting shots on target as the strongest predictor. In conclusion, this study empirically demonstrates tactical differences between male and female soccer teams, underscoring the importance of developing gender-specific tactical strategies and tailored training programs. These findings provide valuable baseline data for soccer coaches and analysts to utilize in future tactical planning and performance evaluation.

NiO cathode 의 용해도에 관한 연구

최형준,임선기,홍성안 ( Hyung Joon Choi,Son Ki Ihm,Seong Ahn Hong ) 한국화학공학회 1995 화학공학의이론과응용 Vol.1 No.1

항공기 시동 성능 확보를 위한 보조동력장치 품질개선

최형준 한국신뢰성학회 2025 한국신뢰성학회 학술대회논문집 Vol.2025 No.6

대학생의 취업스트레스가 스마트폰 게임중독에 미치는 영향: 마음챙김의 매개효과와 대인불안의 조절효과를 중심으로

최형준,김진숙 인문사회 21 2020 인문사회 21 Vol.11 No.4

The study aimed to verify the mediation effect of mindfulness and moderating effect of interpersonal anxiety on the relationship between university student’s job-seeking stress and smartphone game addiction. For this, the survey was conducted on the university students with questionnaire related with their demographic characteristic, job-seeking stress, smartphone game addiction, mindfulness and interpersonal anxiety. The survey was conducted on 250 university students in Gwangju and 227 valid questionnaires were used for data analysis. Descriptive statistics analysis, 3-stage regression analysis, and hierarchical multiple regression analysis were performed using SPSS 23. The research findings were as follows. First, the time and money spent on smartphone games had a significant relationship with the smartphone game addiction. Second, the job-seeking stress had no significant impact on the smartphone game addiction. Third, interpersonal anxiety mediated the relationship between job-seeking stress and smartphone game addiction. Fourth, there was no moderating effect of mindfulness between job-seeking stress and smartphone game addiction. To summarize, the job-seeking stress influenced the smartphone game addiction and this study suggested theoretical and practical implications to settle this problem. 본 연구는 대학생의 취업스트레스가 스마트폰 게임중독의 관계에서 마음챙김의 매개효과와 대인불안의 조절효과를 검증하는데 목적을 두었다. 이를 위해 대학생을 대상으로 인구통계학적 특성, 취업스트레스, 스마트폰 게임중독, 마음챙김, 대인불안과 관련된 설문지를 사용하였다. 광주광역시 재학 중인 대학생 250명을 대상으로 조사를 실시하여, 유효한 227부를 자료분석에 사용하였다. SPSS23을 이용하여 기술통계분석, 3단 회귀분석, 위계적 다중회귀분석을 실시하였다. 연구결과로 첫째, 스마트폰 게임이용시간 비용은 스마트폰 게임중독과 유의한 관계라고 할 수 있다. 둘째, 취업스트레스는 스마트폰 게임중독에 유의미한 영향을 미치는 것으로 나타났다. 셋째, 마음챙김의 매개효과는 있는 것으로 나타났다. 넷째, 대인불안의 조절효과는 나타나지 않았다. 결론적으로 취업스트레스는 스마트폰 게임중독에 영향을 미치며, 이를 해소하기 위한 이론적, 실천적 함의를 제시하였다는데 의의가 있다.

국내 스포츠 빅데이터 분석 연구의 현황

최형준 한국체육측정평가학회 2020 한국체육측정평가학회지 Vol.22 No.2

The study was to discuss about the current status of sports big data researches in Korea among the studies published in the field of sports and physical education. Also, this study intended to discuss about the critical contents in order to apply the big data technologies practically. The articles listed in the journals indexing on the KCI(Korea Citation Index) were considered for this study that the first article used a specific methods relevant to sports big data was importantly selected. And then the articles which used same method with the first article, were cognized as same as the first article. In addition, All articles selected were ordered by published year. The current status in this study were categorized by 1) the concept of big data, 2) text mining, 3) social network analysis, and 4) classification of data. At the beginning of trends, the article about the possibility of application of big data was identified. And the methodological trends of Sports Big Data were heading to the worries when the big data technologies applied to the field of sports and physical education even the methodological changes were found within various attempts. Further application of Sports Big Data could be broadly applied in the field of sports and physical education when systematic and scientific proposals were expanded. 이 연구는 스포츠와 체육학 분야에서 발표된 연구 중 빅데이터 분석을 활용한 연구의 현황에 대해서 논하고, 빅데이터 분석의 실질적인 적용을 위해 고려해야 하는 내용을 논하는데 목적을 두었다. 한국연구재단 한국학술지인용색인(Korea Citation Index)을 통해 검색된 등재 학술지와 등재 후보 학술지에 발표된 논문만을 대상으로 하였으며, 분석 과정에서 특정한 연구방법이 동일 저자 혹은 저자들에 의해 반복적으로 활용된 경우, 하나의 연구방법으로 정리하였고, 연도에 따라 처음 제안된 연구를 먼저 제시한 후 연이은 연구는 동일한 연구방법으로 판단하였다. 이 연구를 통하여 스포츠 빅데이터 분석 방법을 1) 빅데이터 개념에 관련된 연구, 2) 텍스트 마이닝에 관련된 연구, 3) 소셜 네트워크 분석에 관련된 연구, 4) 분류에 관련된 연구로 구분하여 분석하였다. 스포츠 빅데이터 분석의 방법론적 동향은 단순히 빅데이터의 적용 가능성을 논한 연구에서부터 시작하여 스포츠 및 체육학 분야에 적용될 시 발생할 수 있는 우려로 구체화되고 있음을 확인하였고, 방법론적 변화에 있어서 구체적이고 다양한 시도가 이루어지고 있음을 알 수 있었다. 이러한 변화에 있어서 스포츠 빅데이터 분석 방법이 보다 체계적이고 과학적인 제안으로 이어진다면, 향후 스포츠 및 체육학 분야에 광범위하게 적용될 수 있을 것으로 사료된다.

스포츠 위치측정 기반 시계열 자료의 유사성 탐색

최형준 한국체육측정평가학회 2020 한국체육측정평가학회지 Vol.22 No.2

The study was to determine the identification of similarities on the time series data based on the measurement of positioning within soccer match. A match of the korean professional soccer league was selected as subjects of this study, and the collected data was considered in a second unit of data by 10 players each in the team(n=5,657). The time concerned for this study were from the beginning of the first half to the end of the second half. The log likelihood function was used to decide the number of segments among the time series data, and the BIC(Bayesian Information Criterion) penalized log likelihood function was calculated for the identification of similarity on the segment of the time series data. The conclusion of this study was as following belows,First of all, there was useful functionality found when the time series data has been determined by the log likelihood function that the estimation of parameters was easily identified. Secondly, the possibility of classification of time series data with similarity by the BIC penalized log likelihood function was presented, but the number of clusters was differently observed because of different characteristics of variables used. Further research is required that the research on the combination between the experts’ opinion and the results of the segments would be operated in order to identify the factors’ characteristics for the segmentation of time series data in sport. 이 연구는 축구 경기에서 측정된 위치측정 기반 시계열 자료의 유사성을 탐색하는데 목적을 두었다. 이 연구를 위하여 한국남자 프로축구 경기에서 측정된 위치측정 시계열 자료를 연구의 대상으로 선정하였고, 두 팀 각 10명 선수의 위치측정 시계열 자료를 전반전 시작시점부터 후반전 종료시점까지 1초 단위로 정리하여 사용하였다(n=5,657). 이 연구에서는 위치측정 시계열 자료의 유사성 탐색을 위하여 로그 우도(log likelihood) 함수를 사용하여 시계열 자료에 대한 분할 수를 결정하였고, 베이지안정보기준 패널티 로그 우도(Bayesian Information Criterion penalized log likelihood) 함수를 이용하여 위치측정 시계열 자료의 유사성을 탐색하여 얻은 결론은 다음과 같다. 첫째, 선수의 위치측정 시계열 자료를 로그 우도 함수로 분할할 경우, 확률적인 모수의 추정이 가능하여 선수 위치측정 시계열 자료에 적용하기에 용이하였다. 둘째, 선수의 위치측정 시계열 자료를 베이지안정보기준 패널티 로그 우도 함수를 이용하여 유사성을 탐색할 경우 군집이 가능하였나, 자료의 특성에 따라서 제안된 군집의 수는 상이하게 나타났다. 이 연구의 결과를 바탕으로 향후 전문가의 관찰내용과 시계열 자료의 분할 내용을 상호 비교하여 분할에 적용된 요소의 특성을 파악하는 연구가 지속적으로 이루어져야 한다고 사료된다.

저항소자를 이용한 휴대형 Real-time PCR 기기용히터 제작

최형준,김정태,구치완 한국전기전자학회 2019 전기전자학회논문지 Vol.23 No.1

A heater in a portable real-time polymerase chain reaction(PCR) system is one of the important factors for controllingthe PCR thermocycle precisely. Since heaters are integrated on a small-sized PCR chip for rapid heating and fabricatedby semiconductor processes, the cost of producing PCR chips is high. Here, we propose to use chip resistors as aninexpensive and accurate temperature control method. The temperature distribution was simulated using one or two chipresistors on a real-time PCR chip and the PCR chip with uniform temperature distribution was fabricated. Thetemperature rise and fall rates were 18°C/s and 3°C/s, respectively. 바이오샘플의 DNA를 대량 증폭할 수 있는 휴대형 실시간 중합효소연쇄반응(Real-time PCR) 기기에서 히터는 PCR 반응온도를 제어하기 위한 중요한 요소 중의 하나이다. 보통 빠른 히팅을 위해 소형 PCR 칩에 집적화되어 있고, 반도체 공정을이용하여 박막형태로 제작되어 PCR 칩 제작 단가가 높은 편이다. 따라서 본 연구에서는 값싸고 온도제어를 정확히 할 수 있는 히터로 칩 저항을 사용하는 것을 제안한다. 칩 저항을 사용한 히터는 구조가 단순하고 제작이 쉽다는 장점이 있다. 2.54× 2.54 cm² 크기의 실시간 PCR 칩 위에 칩 저항을 1개 또는 2개를 사용했을 때 온도분포를 시뮬레이션 하였고, 고른 온도분포를 갖는 PCR 칩을 제작했다. 또한 효율적인 PCR 칩 냉각을 위해 소형 fan이 내장된 하우징을 설계하였고, 3D 프린터로제작했다. 온도제어는 마이크로프로세서를 이용한 PID제어법(Proportional-Integral-Differential control)을 적용했다. 온도상승비와 하강비는 각각 18℃/s, 3℃/s이며, 각 PCR 반응 단계의 유지 시간을 30초로 하였을 때, 한 사이클은 약 2.66분이 걸렸고, 35 사이클은 약 93 분 내로 진행할 수 있었다.

술 전 초음파 영상을 이용한 안면동맥의 주행 확인 및 이를 이용한 악하선 절제술 시의 안면동맥의 보존

최형준,류성훈,이형민,박지훈,김진환,이동진 대한이비인후과학회 2015 대한이비인후과학회지 두경부외과학 Vol.58 No.8

Background and Objectives The traditional surgical method for submandibular gland resection includes ligation of facial artery. In this study, we used ultrasound preoperatively and tried to preserve the facial artery if facial artery passed on an extra-glandular course with a glandular branch. Subjects and Method Patients undergoing submandibular gland resection either because of submandibular gland tumor or submandibular gland stone were prospectively included. Preoperative sonographic assessment was done to evaluate the intra-glandular or extra-glandular course of facial artery. For the cases with extra-glandular course with a glandular branch of facial artery, we tried to preserve facial artery by ligation of the glandular branch. Results A total of 34 cases were included in this study. Among them, 6 cases (17%) hadfacial artery passing on an extraglandular course with glandular branching. For these 6 cases, we easily could find the facial artery and glandular branch in the operative field and were able to preserve the facial artery. For the remaining 28 cases, however, the facial artery penetrated through the submandibular gland, thus we opted for the ligation of facial artery rather than preserving it to minimize bleeding or trauma during the surgery. There were no statistic difference between two groups with respect to clinical and surgical variables. Conclusion Extra-glandular course of facial artery was easily assessed by preoperative ultrasound. In those cases, we could preserve facial artery easily without bleeding or trauma to the submandibular gland by ligation of glandular branch. As facial artery is animportant vessel for reconstruction and facial rejuvenation, it is preferable to preserve this artery if the course of this artery makes it possible to preserve.