아급성 편마비 뇌졸중 환자의 보행에 로봇-보조훈련이 미치는 영향에 관한 체계적 고찰

박세인,황수진 대한고유수용성신경근촉진법학회 2023 PNF and Movement Vol.21 No.1

Purpose: This systematic review aims to determine whether robot-assisted training is more effective in gait training for personswith subacute hemiparetic stroke. Methods: This study adopted a systematic review study design focused on subacute hemiparetic stroke, and four core academic databases were searched until June 11, 2021, for relevant studies, including PubMed, Embase, the Cochrane Library, and ProQuest Central. The review included randomized controlled trials (RCTs) evaluating the effects of robotic-assisted training on gait performance in persons with a diagnosis of subacute hemiparetic stroke. The selected RCT studies were qualitatively synthesized based on the population, intervention, comparison, outcome, settings, and study design (PICOS-SD). Results: The study selected five RCTs involving 253 subacute hemiparetic stroke patients and performing robotic-assisted gait training using the following devices: the Lokomat, Morning Walk, Walkbot, ProStep Plus, or Gait Trainer II. Five RCTs were eligible for the meta-analysis after quantitative synthesis, and the results showed that the robot-assisted gait training group had a greater gait performance than the control group based on the 10-meter walk test, Berg balance scale, Rivermed mobility index, functional ambulation category, and modified Barthel index. Conclusion: The results of this study showed that the gait performance of subacute hemiparetic stroke patients changes throughout robot-assisted gait training, but there were no indications that any of the clinically relevant effects of robot-assisted training are greater than those of conventional gait training. Further, the small sample size and different therapeutic intensities indicate that definitive conclusions could not be made.

APEC 인적자원개발 실무그룹(HRD W/G)활동

박세인 과학기술정책연구원 1997 과학기술정책 Vol.- No.100

한 · 미 과학기술협력포럼 : 성과와 전망

박세인 과학기술정책연구원 1998 과학기술정책 Vol.- No.115

농경지 토양유실 및 수질오염물질 유출에 대한 침사구 조성 효과

박세인,박현진,김한용 한국환경농학회 2019 한국환경농학회지 Vol.38 No.4

BACKGROUND: An intensive farming system may be of the most important source for agricultural non-point source (NPS) pollution, which is a major concern for agricultural water management in South Korea. Various management practices have therefore been applied to reduce NPS loads from upland fields. This study presents performances of sediment trap for reducing NPS and soil loss from rainfall runoff in cropland. METHODS AND RESULTS: In 2018 and 2019, three sediment traps (L1.5 m × W1.0 m × D0.5 m = 0.75 m3 ) and their controls were established in the end of sloped (ca. 3%) upland field planted with maize crops. Over the seasons, runoff water was monitored, collected, and analyzed at every runoff. Soils deposited in sediment traps were collected and weighed at the season end. Sediment traps reduced runoff amount (p<0.05) and NPS concentrations, though the decreased NPS concentrations were not always statistically significant. In addition, sediment traps had a significant prevention effect on soil loss from rainfall runoff in a sloped cropland. CONCLUSION: The results suggest that the sediment trap could be a powerful and the best management practice to reduce NPS pollution and soil loss in a sloped upland field.

Changes in CO2 Absorption Efficiency of NaOH Solution Trap with Temperature

박세인,박현진,양혜인,최우정 한국토양비료학회 2017 한국토양비료학회지 Vol.50 No.6

Under the projected global warming, release of carbon as CO2 through soil organic matter decomposition isexpected to increase. Therefore, accurate measurement of CO2 released from soil is crucial in understanding thesoil carbon dynamics under increased temperature conditions. Sodium hydroxide (NaOH) traps are frequentlyused in laboratory soil incubation studies to measure soil respiration rate, but decreasing CO2 gas solubilitywith increasing temperature may render the reliability of the method questionable. In this study, the influencesof increasing temperature on the CO2 capture capacity of NaOH traps were evaluated under 5~35°Ctemperature range at 10°C interval. Two closed-chamber experiments were performed where NaOH traps wereused to capture CO2 either released from acidified Na2CO3 solution or directly injected into the chamber. Thesorption of ambient CO2 within the incubators into NaOH traps was also measured. The amount CO2 capturedincreased as temperature increased within 2 days of incubation, suggesting that increased diffusion rate of CO2at higher temperatures led to increases in CO2 captured by the NaOH traps. However, after 2 days, over 95% ofCO2 emitted in the emission-absorption experiment was captured regardless of temperature, demonstratinghigh CO2 absorption efficiency of the NaOH traps. Thus, we conclude that the influence of decreased CO2solubility by increased temperatures is negligible on the CO2 capture capacity of NaOH traps, supporting thatthe use of NaOH traps in the study of temperature effect on soil respiration is a valid method.

Pollutant Runoff Reduction Efficiency of Surface Cover, Vegetative Filter Strip and Vegetated Ridge for Korean Upland Fields: A Review

박세인,박현진,양혜인,김한용,윤광식,최우정 한국환경농학회 2018 한국환경농학회지 Vol.37 No.3

BACKGROUND: In this review paper, the effects of surface cover (SCV), vegetative filter strip (VFS), and vegetated ridge (VRD) on the pollutant runoff from steep-sloping uplands were analyzed to compare the pollutant reduction efficiency in runoff (PRErunoff) of the practices and to investigate how slope and rainfall parameters affect the PRErunoff. METHODS AND RESULTS: The PRErunoff of SCV, VFS, and VRD for pollutants including suspended solids and biological oxygen demand was compared by analysis of variance. The effect of slope and rainfall parameters on the PRErunoff was explored by either mean comparison or regression analysis. It was found that the PRErunoff differs with the practices due to different pollutant reduction mechanisms of the practices. Though the PRErunoff was likely to be affected by site condition such as slope and rainfall (amount and intensity), more comprehensive understanding was not possible due to the limited data set. CONCLUSION: The PRErunoff of SCV, VFS, and VRD differed due to the distinctive mechanisms of pollutant removal of the practices. It is necessary to accumulate experimental data across a variety of gradient of slope and rainfall for comprehensive understanding of the effects of the practices on pollutant runoff from steep-sloping uplands.

목질계 바이오매스 전소 발전시설에서 발생하는 연소잔재물의 특성 분석

박세인,이유민,남궁훤,강준구,이원석,유명수 환경독성보건학회 2021 한국독성학회 심포지움 및 학술발표회 Vol.2021 No.10

미술교육에서 교육적 의사소통에 관한 연구: 고등학교 미술 수업의 대화 분석을 중심으로

박세인,김선아 한국조형교육학회 2018 造形敎育 Vol.0 No.66

Education today aims to foster autonomous and critical human beings. To achieve the goals, mutual conversation which students speak, ask questions, listen and think about others' opinions is being emphasized as a relevant method. Conversation-based appreciation method has been introduced in art education, but not much has changed in actual classrooms. The purpose of this study is to qualitatively understand the status quo by analyzing actual classroom environment, mainly the conversation between the instructor and student. Characteristics of conversation, in different boundaries from general education, school environments and art education were studied through literature research. Then, conversations in one high school art class were recorded and analyzed. The result showed the instructor’s degree of participation and way of speaking influenced students’ dialogic participation. It also showed an implicit rule that set the tone of the classroom: ‘Instructor decides the course content and method, to which students abide’. The study enabled the instructor to understand more about the classroom, students, and the language habits to make changes for improvement. 현대 교육의 목적은 자율적이고 비판적인 인간을 육성하는 것이다. 이를 위한 교육방법으로 학생들이 자기 생각을 말하고 질문하며 서로 이야기를 듣고 생각하는 상호적 대화가 강조되고 있다. 미술교육에서도 자율성과 비판적 사고를 촉진하기 위해 대화를 이용한 감상 교육방법이 도입되었다. 그러나 실제 교육 현장은 크게 변하지 않았다. 본 연구의 목적은 수업 현장의 교사와 학생들의 대화를 분석하여 그 상태를 질적으로 이해하는 것이다. 면밀한 이해가 개선의 발판이라고 보기 때문 이다. 먼저 문헌연구를 통해 교육적 대화와 학교 교실 대화의 특징, 미술교육에서 일어날 수 있는 대화에 대해 살펴보았다. 그 후 한 교사가 가르치는 고등학교 1학년 미술 수업을 관찰하고 대화를 수집하여 분석하였다. 그 결과, 교사가 대화에 얼마나 많이 참여하며 어떤 종류의 언어활동을 구사하느냐가 학습자의 대화 주도성에 영향을 주고 있음을 확인하였다. 또 ‘교사가 수업의 내용과 방향을 정하고 학생은 따른다.’라는 규칙이 교실을 암묵적으로 지배하고 있음을 찾아내었다. 이 연구는 교사 자신과 학생들이 지키고 있었던 암묵적인 규칙과 교사의 비교육적 언어 습관을 인식하게 함으로써 교육적인 대화가 일어나는 수업으로의 전환을 위한 개선 방향을 도출하였다는 데에 의의가 있다.

Changed Stoichiometric Ratios of Carbon, Nitrogen, and Phosphorus in Runoff Water from Maize Upland Fields by Rice Straw Cover

박세인,Hye In Yang,Hyun-Jin Park,Bo-Seong Seo,Young-Jae Jeong,최우정 한국토양비료학회 2020 한국토양비료학회지 Vol.53 No.3

Soil and nutrient loss through runoff water from upland fields is a critical non-point pollution pathway inagricultural areas. Surface cover with crop residue is commonly recommended to reduce soil and nutrientloss; however, there is a high possibility of increased runoff loss of dissolved organic C (DOC) throughdecomposition of crop residue though relevant studies are lacking. The changed stoichiometric ratios ofcarbon (C), nitrogen (N), and phosphorus (P) such as C/N and C/P of runoff water by increased DOC loss canbe indicators of the impact of surface cover on water quality. In this study, the effects of rice straw cover onC/N and C/P of rainfall-derived runoff water (totally six events) from upland maize fields were investigated. The C/N and C/P in the sediment-bound form were not affected by straw cover throughout the six rainfallevents, across the control and covered plots. The C/N and C/P in dissolved forms varied from 0.9 to 3.3 (1.8 ±0.4) and from 4.6 to 43.4 (12.1 ± 2.8) for control plot and from 1.8 to 37.1 (8.7 ± 0.8) and from 6.1 to 126.2(44.4 ± 6.5) for covered plots, respectively. Surface cover increased (p < 0.05) the mean C/N (by 4.8 fold) andC/P (3.7 fold) in the dissolved forms across the six events, and increased C/N and C/P were evident in the lateperiod of long-lasting rainfall events when surface cover lost its capacity to reduce runoff. Therefore, surfacecover of upland fields with crop residue may increase C/N and C/P of runoff water, and thus thesestoichiometric ratios in water bodies surrounding the fields may be used as indicators of the influence of uplandfields covered with crop residue on water pollution particularly in the late period of continuous rainfall.

가속도 데이터를 이용한 딥러닝 기반 시스템 동바리의 손상탐지

박세인 ( Park Sae In ),정현진 ( Jung Hyun-jin ),이종한 ( Lee Jong-han ) 한국구조물진단유지관리공학회 2021 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.25 No.1

최근 건설공사의 대형화와 고층화에 따라 타설하중을 지지하는 가설구조물인 동바리의 시공 편리성과 안전성 향상을 위해 시스템 동바리의 사용이 증가하고 있다. 존치 기간이 짧은 가설구조물의 특성상 사고 위험이 존재함에도 체계적인 구조물의 안전성 모니터링이 이루어지고 있지 않으며 계측데이터의 분석도 상당한 시간이 소요되는 경우가 많아 사고 위험시에도 현장의 즉각적인 대응이 어려운 실정이다. 따라서, 본 연구에서는 시스템 동바리의 구조적 결함을 모사해 손상시나리오를 설계하고, 정의된 손상시나리오에 따라 동적하중에 대한 가속도의 시계열 데이터를 수집하여 딥러닝 기반의 손상 탐지 프로그램을 개발하였다.