제세동기 최적 파라미터 설계

윤혜연,고한우 ( H . Y . Yoon,H . W . Ko ) 한국센서학회 1997 센서학회지 Vol.6 No.3

In designing defibrillator, several parameters such as patient`s transthoracic impedance, output energy level, peak current, and time duration of current waveform must be considered to generate electrical shocks on the heart. Patient`s transthoracic impedence depends on the physical and health condition of patient. In this study, before the development of a defibrillator, the range of above parameters value as circuit elements was determined to derive optimal waveform by predicting and analyzing the performance of designed circuit by means of simulation with the software, P-Spice. The efficiency of parameter design was verified through the performance test with the developed defibrillator.

경남지방 논매기소리의 공간적 분포와 문화권 구분에 관한 연구

윤혜연,임은진,박현수 한국사진지리학회 2020 한국사진지리학회지 Vol.30 No.2

This study analyzed the geographical spatial distribution characteristics by type and major regional weeding songs based on the collected data of weeding songs in Gyeongnam-do district recorded in the 1980s for the analysis of the cultural region of weeding song in Gyeongnam-do district. Based in result, six types of major weeding songs were found in Gyeongnam-do district, and inclusing all, the cultural areas of ‘Ipmal Ryu’, ‘Eosanyeong Ryu’, ‘Monorae Ryu’, and ‘Gungule Ryu’ were analyzed, with distinct geographical spatial distribution characteristics. The western mountainous area is mainly called ‘Monorae Ryu’ and lt is distributed on the alluvial plain and spread around Geochang-eup as well as the valley bottom plain that is spatially connected with it. The central plains and hilly areas are the main cultural centers of the ‘Gungule Ryu’ and some of the ‘Ipmal Ryu’ and ‘Eosanyeong Ryu’ are also distributed. In the central part, the weeding songs are distributed along the waterways of the Nakdong River and the valley of mountainous areas in Uiryeong-gun and Changnyeong-gun. It is believed that the eastern Nakdongjeongmaek Mountain Area is an area where ‘Ipmal Ryu’ and ‘Eosanyeong Ryu’ are mainly called, and that due to the influence of the Yangsan fault line and space-continued lineament, smooth sound propagation may have occurred in the central part of the Nakdong River’s alluvial plain and within the eastern Nakdongjeongmaek Mountain Area.

노래부르기 과업이 브로카 실어증자의 읽기와 조음 능력에 미치는 영향

윤혜연,권도하 대구대학교 특수교육재활과학연구소 2012 再活科學硏究 Vol.30 No.1

이 연구는 가사보며 노래부르기 과업으로 브로카 실어증자의 읽기와 조음능력을 향상 시키고자 하였다. 3명의 브로카 실어증 대상자로 하였으며 연구 방법은 사전-사후 검사를 사용하였다. 이 연구에서 사용된 노래부르기 과업은 3단계로 구성되어있다. 노래는 대상자에게 있어 익숙한 노래 5곡을 선정하였다. 1단계는 제공된 MP3파일로 노래를 들으며 따라부르기를 한다. 2단계는 문자단서로 제공된 노래가사를 한 음절씩 짚으며 따라 부르기를 하고, 3단계에서는 음을 점진적으로 제거하며 가사 읽기를 시도한다. 이에 치료실외에서도 하루에 3회씩 연습할 수 있도록 지도하였다. 그 결과 노래부르기 과업은 읽기, 조음능력 뿐만 아니라 따라말하기, 이름대기 등 전반적인 언어능력에 있어 향상을 보였다. The purpose of this research was to explore the effect of singing while reading the lyrics had on the reading and articulation skills of people with Broca’s aphasia. The study consisted of three subjects with Broca’s aphasia and the results were analysed by pre-to-post analysis. Thirdly, through the implementation of the task of singing, linguistic abilities, such as reading, intonation, word-repeating and naming skills were all improved. The five songs that were chosen were songs that the participants were familiar with. The first stag involved participants singing along to the songs that were given to them as an MP3 file. The second stage involved participants looking at the hard copy of the lyrics and then breaking up each syllable while singing out loud and the third stage involved gradually omitting the tone from the songs and getting participants to only read the lyrics out loud. Participants were advised to repeat these three steps three times a day outside of the treatment room. The results of this study are as follows: Firstly, there was an improvement in the reading skills following singing tasks. Secondly, through implementing the task of singing there was an articulation in the clarity of intonation. Thirdly, through the implementation of the task of singing, improvements in reading, the ability to intonate, repeating words and naming skills were evident; as well as an overall improvement to the linguistic ability of the people.

다중시기 항공영상을 활용한 내륙습지 경계 설정에 관한 연구 - 장구메기습지를 대상으로 -

윤혜연,정근비,임정철,장동호 한국지형학회 2022 한국지형학회지 Vol.29 No.3

This study analyzed the changes of the Jang-gumegi wetland using multi-temporal aerial images, and proposed an objective method of delineating wetland boundaries. The result of the study indicated that the Jang-gumegi wetland were formed in paddy fields in the early 1900’s, and the number of households and paddy area continued to increase by the government’s 5-year plan for agricultural production enhancement and the baby boom thereafter. On the other hand, the study area gave up on agricultural production when the number of households decreased due to migration from rural to urban area after the 1980’s, and the fields have been abandoned since then. Meanwhile, the wetland boundaries were re-detected based on the location information by GPS and soil depth data and sediment samples were updated in the Jang-gumegi wetland. The soil depth between the regions was proportionated to the period of paddy cultivation, and the grain size of the sediment consisted mostly of clay, silt and partially sandy particles. This reflected poor drainage of paddy fields, and it indicated that the sediment supplied from the slope after fallow was deposited along a gentle slope. The derived result is expected to serve as a guideline for the establishment of preservation and management measures for abandoned paddy wetlands and a better methodology for wetland boundary settings.

드론 영상을 활용한 금강 하도내 퇴적환경 변화 연구: 세종보 개방을 중심으로

윤혜연,정근비,윤광성,장동호 한국지형학회 2023 한국지형학회지 Vol.30 No.1

In this study, the changes and characteristics of sedimentary environment in Geum River channel by opening gate of Sejong Weir were analyzed using aerial photos and drone images. Sedimentary landform was classified during the study period and it has been found that the changes of area in some classes such as mid-channel island of divided type, mid-channel island of undivided type, sand barrier, and sand island were larger than that of other classes. In addition, the characteristics of area changes of the sedimentary landform were analyzed in this study. As a result, it was determined that erosion and deposition of sediments in the river was depended on the increase of flow rate and velocity by the increase of precipitation particularly during the summer rainy reasons as well as typhoons, growth of vegetation, and efficiency of dam. The results can be used as data to identify the process of conserving endangered wildlife and restoring the naturalness of the river environment.

경기도 논매기소리의 공간분포 및 전파 특성 분석 - 상사 류, 방아 류, 몸돌 류를 사례로 -

윤혜연,장동호 한국지형학회 2023 한국지형학회지 Vol.30 No.2

In this study, the spatial distribution and diffusion characteristics of the Sangsa and Banga, Momdol in Gyeonggi-do were analyzed using geomorphological elements. Based on the result of the drainage network analysis, distribution of the three type sounds were influenced by the Hangang and the Imjingang in common. As a result of lineament analysis, Sangsa and Banga, Momdol are generally distributed along the NE-SW direction that coincides with the strike of the Gwangju Mountains. In the northeastern region of Gyeonggi-do, the lineament in the N-S and E-W directions intersects due to the Gwangju Mountains and Chugaeryeong Tectonic Valley, which acted as a medium for smooth sound diffusion. In the southeastern region, multi-directional lineament appears, but the development is weak and forms an isolated basin, which confirms that there was difficulty in sound diffusion. In addition, in the western region, the distribution and intersection of multi-directional lineament appears, suggesting that cultural exchange took place. The analysis result will show the importance of building a cultural element DB in geography.

우도비를 활용한 제주도 중산간지역 오름의 자연・환경적 공간분포 특성 분석

윤혜연,장동호 한국지리학회 2019 한국지리학회지 Vol.8 No.2

This study analyzed the natural environmental spatial distribution characteristics of Oreum, located in the mid-mountain area of Jeju Island by employing a likelihood ratio based on Bayesian probability. The result of the likelihood ratio did not display a clear correlation between the aspect, effective soil depth, geologic and Oreum. However, a high correlation was displayed with the elevation, slope, soil drainage, forest type, and land-cover. The result of ascertaining in the mid-mountain area based on thereon demonstrated that the greatest distribution is seen mostly at a elevation of 300-400m (33.8%). Eventually Oreum was highly distributed at the angle of 20-30° (48.3%) and with a South-Southeast direction (26.8%). Furthermore, the soil drainage level of Oreum was found to be well drained at 70.2% and the effective soil depth was highly distributed at 50-100cm (66.0%). In terms of forest type, the highest distribution of coniferous plantain (27.8%) and broad-leaved forest (24.0%) was seen in Oreum, and in terms of geological map was shown trachy-basalt (Ⅲ) of Quaternary (43.6%) is the highest distribution. Moreover, the land-cover of Oreum was highly distributed of forest areas (79.9%) and grass land (19.1%) individually. The likelihood ratio results to be calculated and would be used as basic data for analyzing the spatial distribution characteristics of Oreum using a GIS spatial integration model. 본 연구는 베이지안 확률 기반 우도비를 활용하여 제주도 중산간지역에 위치한 오름의 자연・환경적 공간분포 특성을 분석하였다. 우도비 결과, 사면향, 유효토심, 지질은 오름과의 뚜렷한 상관관계가 나타나지 않았지만, 고도, 경사, 토양 배수, 임상, 토지피복 등은 높은 상관관계가 나타났다. 이를 바탕으로 중산간지역 오름의 자연・환경적 공간분포 특성을 도출한 결과, 중산간지역 오름은 대부분 고도 300-400m(33.8%)에 가장 많이 분포하는 것으로 나타났다. 경사는 20-30°(48.3%), 사면향은 남-남동(26.8%)에 오름이 다수 분포하는 것으로 확인되었다. 또한, 오름의 토양 배수등급은 70.2%가 양호에 속하며, 유효토심은 50-100cm(66.0%)에 가장 많이 분포하는 것으로 나타났다. 임상은 침엽수 인공림(27.8%)과 활엽수림(24.0%)에 오름이 가장 많이 분포하며, 지질은 제4기 조면현무암(Ⅲ)(43.6%)에 가장 많이 분포하고 있었다. 이밖에 오름의 토지피복은 산림지역과 초지가 각각 79.9%, 초지 19.1% 순으로 분포하고 있었다. 향후 산출된 우도비 결과 값은 GIS 공간통합 모델을 활용한 오름의 공간분포 특성 분석을 위한 기초 자료로 활용될 수 있을 것이다.

알츠하이머 치매 환자에서의 병식과 신경정신행동과의 연관성 : A Clinical Research Center for Dementia of South Korea (CREDOS) Study

윤혜연,명우재,송지혜,최준배,강효신,나덕렬,김성윤,이재홍,한설희,최성혜,김상윤,김도관 대한신경정신의학회 2013 신경정신의학 Vol.52 No.1

Objectives The aim of this study was to identify the association between insight and neuropsychiatric symptoms in patients with Alzheimer’s dementia (AD). Methods We examined 2607 patients with AD in the Clinical Research Center for Dementia of South Korea study and designed a cross-sectional study. Each patient underwent psychiatric,neurological, and medical examination, interview for caregivers, laboratory tests, neuropsychological tests, and brain MRI. Cognitive function was measured using the Korean version of the Mini-Mental State Examination, Global Deterioration Scale, and Clinical Dementia Rating. Behavioral and psychological symptoms were measured using the Korean version of the Neuropsychiatric Inventory. Daily Living was measured using the Barthel Index for daily living activities and Seoul-Instrumental Activities of Daily Living. Insight was classified according to ‘with insight’,‘partial insight’, and ‘without insight’ by interview with caregivers. Results Among the 2607 patients, 990 were included in the ‘with insight’ group, 1191 were included in the ‘Partial insight’ group, and the ‘without insight’ group included 426 patients. The ‘without insight’ group had a significantly higher aggression level than the ‘with insight’ group, but not the ‘partial insight’ group [odds ratio (OR)=1.46, 95% confidence interval (CI) : 1,14-1.88]. A significantly lower prevalence of depression was observed in the ‘Partial insight’ group and the ‘without insight’ group, compared to the ‘with insight’ group (OR=0.51, 95% CI : 0.43-0.61/OR=0.61, 95% CI : 0.48-0.78). The ‘partial insight’ group showed a lower anxiety level than the ‘with insight’ group (OR=0.63, 95% CI : 0.53-0.75). Conclusion Findings of this study confirmed that insight level was associated with aggression,depression, and anxiety in patients with Alzheimer’ dementia.

패션을 향한 나의 도전 : 창업

윤혜연 한국생활과학회 2012 한국생활과학회 학술대회 Vol.2012 No.05

응급의료체계에서 119구급대의 구급업무일지 기록현황 및 기록양식의 문제점

윤혜연,이태용,조진만 최신의학사 1997 最新醫學 Vol.40 No.5