• Title/Summary/Keyword: 전환장애

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Coronary Blood Flow Disturbance of a Single Coronary Artery in a Patient Undergoing Aortic Valve Replacement - A case report - (단일관상동맥환자에시 대동맥판막 치환술 시행 중 발생한 관상동맥혈류장애의 치험 - 1예 보고 -)

  • Jung, Hee-Suk;Lee, Jae-Won;Jung, Sung-Ho
    • Journal of Chest Surgery
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    • v.42 no.6
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    • pp.774-776
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    • 2009
  • A 57-year-old man with dyspnea was transferred to our institution. Echocardiography demonstrated grade III aortic valve regurgitation with a bicuspid aortic valve. The preoperative coronary angiography showed a left single nary artery. Replacement of the aortic valve was performed. Ventricular fibrillation developed during weaning patient of cardiopulmonary bypass after aortotomy repair. An anomalous origin of the coronary arteries is an incidental finding. However, in patients who are undergoing aortic valve replacement, a can significantly complicate the procedure. If this is present, then it is imperative that the clearly identified and the required procedure should be modified to avoid injury to these.

A Study on the Analysis of Ciliary Beat Frequency in Human Respiratory Tract n Vivo (레이저 산란 기법을 이용한 인체 기도 내 섬모 운동 신호의 분석에 관한 연구)

  • 이원진;이재서;이재서;이철희;권태영
    • Journal of Biomedical Engineering Research
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    • v.21 no.4
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    • pp.339-344
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    • 2000
  • The mucociliary system is one of the most important airway defense mechanisms in human body and impairment of ciliary movement results in various diseases in respiratory tract. In this study, we have developed a system that can measure ciliary movement in vivo and quantified ciliary beat frequency (CBF) through autoregressive (AR) power spectrum. To measure the frequency in vivo, we applied a photoelectric method that was composed of a laser light and a fiber optic probe. Scattered signals are transferred to a PC in which they are displayed on the monitor and its CBF is determined by the AR method in were acquired. For 8 normal subjects, the analyzed CBFs ranged from 5 to 10Hz and its mean was 7.3${\pm}$1.1Hz. This result showed similar aspects to the reported results of CBFs to data. We expect that this result will be applied in various clinical studies such as analysis of CBF changes by drugs or by diseaes.

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Different Perceptions of Motivational Factors between Sharing Economy Service Types (공유경제 서비스 유형별 동기요인 분석)

  • Shim, Su-Jin
    • Journal of Convergence for Information Technology
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    • v.9 no.8
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    • pp.110-122
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    • 2019
  • IT innovation, cultural revolution based on smart and social networks diversified sharing economy services. Due to the rising of business utilizing the sharing economy concept, it is important to better understand the motivational factors that drive and deterrent sharing economy services in the marketplace. Based on responses from 809 adult users, 3 drivers and 2 deterrents affecting intention to use of sharing economy services were identified. Then this study categorized sharing economy services as three types of segments based on consumer perceptions and subjectivity, and analyzed differencies of perceptions on motivational factors between groups. As a result, redistribution market group has shown meaningful different average scores on economic benefit, sustainability and social risk with other groups. Based on the empirical evidence, this study suggests several propositions for future studies and implications for sharing economy businesses on how to formulate optical strategies and manage users.

A Study on the Improvement of Pedestrian Environment for the Mobility Handicapped on the Use of Personal Mobility Vehicle (개인형 이동수단의 이용에 따른 교통약자의 보행환경 개선에 관한 연구)

  • Lee, Joo-Hyung;Lee, Kyoo-Il
    • Journal of the Korea Convergence Society
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    • v.12 no.2
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    • pp.201-213
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    • 2021
  • Recently, personal mobility has been spreading and using increasing, but the pedestrian environment is getting worse and accidents are also rapidly increasing. Therefore, this study conducts a status survey related to the elements of pedestrian disturbances in personal mobility and identifies the problems. The following measures are presented to improve the pedestrian environment for the mobility handicapped through expert opinion surveys. The movement of individual mobility means in the walking space is prohibited, and the speed limit shall be stipulated to enable the mobility handicapped to walk safely and conveniently. Parking spaces will have to create obstacle zones in the parking area next to the roadway or at the border of sidewalks and roads, and regulations are needed to collect illegally parked vehicles. It is necessary to switch from the existing automobile-oriented road to the road structure considering the use of low and medium-speed vehicles.

Deep Learning Based Emergency Response Traffic Signal Control System

  • Jeong-In, Park
    • Journal of the Korea Society of Computer and Information
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    • v.28 no.2
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    • pp.121-129
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    • 2023
  • In this paper, we developed a traffic signal control system for emergency situations that can minimize loss of property and life by actively controlling traffic signals in a certain section in response to emergency situations. When the emergency vehicle terminal transmits an emergency signal including identification information and GPS information, the surrounding image is obtained from the camera, and the object is analyzed based on deep learning to output object information having information such as the location, type, and size of the object. After generating information tracking this object and detecting the signal system, the signal system is switched to emergency mode to identify and track the emergency vehicle based on the received GPS information, and to transmit emergency control signals based on the emergency vehicle's traveling route. It is a system that can be transmitted to a signal controller. This system prevents the emergency vehicle from being blocked by an emergency control signal that is applied first according to an emergency signal, thereby minimizing loss of life and property due to traffic obstacles.

An Analysis of the Psychiatric Characteristics of the Alopecia Areata in Female (여성 탈모증의 정신의학적 특성 분석)

  • Lee, Kil-Hong;Na, Chul;Lee, Young-Sik;Lee, Chang-Hoon;No, Byung-In;Hong, Chang-Kwon
    • Korean Journal of Psychosomatic Medicine
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    • v.8 no.1
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    • pp.31-45
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    • 2000
  • Objectives : The present study was performed to reveal differences between female and male cases of alopecia in their alopecia related variables such as patterns of hair loss, psychiatric characteristics, associate illnesses, and methods of treatment, and to use them as basic materials for proper management and early prevention of the alopecia prone cases. Methods : In order to analysis the gender difference in hair losses, the subjects were divided into two subgroups as the 51 cases of female alopecia and the 42 cases of male alopecia, who had visited to the department of psychiatry consulted from the department of dermatology, Yongsan hopital, ChungAng University, Seoul, Korea, from January 1998 to December 1998. In data analysis, the subjects were statistically assesed by chi-squre test and analysis of varaiance, through SPSS-$PC^+$ 9.0V. Results : 1) Female subjects were more likely showed lower socio-economical level including lower eonomical level, lower educational level, or lower occupational level in their parent's job, were more likely to have larger number of siblings and to have many sisters comparison to the male cases. 2) Female subjects were more likely visited to the department of dermatology, more history of alopecia in their female family members, lesser history of alopecia in their male family members, more loss of hairs in vertex or frontal region of scalp, lesser loss of hairs in occipital region, and lesser nail changes in comparison to the male cases. 3) Female subjects were more suffered from intra-familial conflicts and economical changes, or their introverted personality makeup, lesser likely suffered from changes of business and health changes, and showed lesser conflicts related with poorer adaptaion in their job life. 4) Female subjects were more likely diagnosed as depression or conversion disorders, more frequently complaint anxiety symptoms or depressive symptoms, higher level of anxiety index, lesser complaint somatization or obsessive compulsive symptoms, and lesser diagnosed as anxiety disorder in comparison to the male cases. 5) Female subjects were more likely tended to show personality makeup such as the introverted, the lie, the repressed, or the feminine trends than the male cases. 6) Female subjects were more significantly treated by antianxiety drug such as etizolam and dermatological therapies include tretinoin, and lesser treated by clotiazepam and prednicarbonate in comparison to the male cases. Conclusion : From the facts that The most important factors in developing hair loss in the female subjects in comparison to the male cases seems to be closely correlated with the serious psychopathology such as the presence of mental disorders including depression, the presence of complaining anxiety or depressive symptomatology, the presence of stressful life events such as intrafamilial life changes, and the presence of personality makeup such as the introverted, the lie, the repressed, or the feminine trends, the authors confirmed that dermatologists act as the primary care physician are in a unique position to recognize psychiatric comorbidity and execute meaningful intervention for female patients with the alopecia with psychiatrists.

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A Study of Design Education for the Public and its Development Direction (대중의 디자인교육문제와 발전방향에 관한 연구)

  • Cho, Kyu-Myung;Kim, Tae-Chul;Kim, Kyung-Sook
    • Archives of design research
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    • v.18 no.1 s.59
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    • pp.91-104
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    • 2005
  • In the past, the design education focused on the technique and skill to satisfy the production and consumption activities of a corporation based on beauty and practicality in the industrial age. Now, it's time to switchover to a life-quality enhancing education by harmonizing and meeting the public's physical and mental needs because design education is a character education which enhances the quality of life by uplifting people's aesthetic sense. This paper has emphasized on the importance of public education of design through the theoretical investigation on social environmental changes caused by the emergence of information society,,education problems, public education, and the necessity of design education. The reason why this study should be done has been suggested by investigating the necessity of this research and bringing up the issue. Furthermore, the current status and problems of public education on design have been analyzed. Then, based on the result, the development direction of design education has been suggested. This study can be concluded as follows: First, the design education should change from its vertical structure to a horizontal one. It should be widely spread to the public, getting off from its privatization for a certain group. Second, designers and the public should correct their way of thinking about design. The ordinary people as well as the designers should cultivate their capability to find and take care of design related issues in their everyday lives. Third, all people should be the subject of design education for the public. As a part of cultural education on the public's aesthetic sense, design education should be reborn as a field of study in which a sound public culture can be developed by the integration of human life and culture, exceeding the limit of school curriculum.

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Early Management of Total Parenteral Nutrition Induced Hepatic Dysfunction with Cyclic Parenteral Nutrition (정맥영양 관련 간기능 장애에서 조기 주기성 정맥영양법의 유용성)

  • Lee, Sung Soo;Chang, Ju Young;Yang, Hye Ran;Ko, Jae Sung;Choi, Kyung Hee;Seo, Jeong Kee
    • Pediatric Gastroenterology, Hepatology & Nutrition
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    • v.7 no.1
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    • pp.61-73
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    • 2004
  • Purpose: Liver function test abnormalities have been reported frequently in patients receiving total parenteral nutrition (TPN). In adults, it is known that liver complications decrease with the use of cyclic parenteral nutrition (CPN), especially if the shift to cycling was not too late. However, there are few studies about the effects of cycling on liver injury in children beyond the neonatal period. The aim of this study is to evaluate the effect of the early use of CPN on total parenteral nutrition induced hepatic dysfunction. Methods: Twelve sets of CPN in 11 children (2 months to 17 years) were included in this study. Data on underlying diseases, age, length of time on TPN, macronutrient intake, complications, and biochemical parameters were collected from clinical records. All children had received CPN in the early period of persistent transaminase elevation or cholestasis complicated by previous continuous PN. The duration of infusion off-time in CPN was 2 hours in patients less than 3 months of age and 4 hours in the older children. Results: All 12 cases showed elevated aminotransferase and 5 of them also showed cholestasis. Serum total bilirubin concentration was normalized in all 5 cases with median periods of 8 days (p<0.05) after initiation of CPN. ALT either decreased significantly or was normalized in all cases with median periods of 30 days (p<0.05) on CPN. The CPN was well tolerated without significant complication except for one case of hyperglycemia. Conclusion: The early use of cyclic parenteral nutrition had a beneficial effect in improving hepatic dysfunction complicated by TPN in children.

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Effect of Ureaform, SCU and Melamine on Barley Growth and their Nitrogen Supplying Ability (Ureaform, SCU, Melamine의 질소공급력(窒素供給力)과 보리 생육(生育)에 대(對)한 효과(效果))

  • Lim, Sun-Uk;Oh, Nam-Soon
    • Korean Journal of Soil Science and Fertilizer
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    • v.17 no.3
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    • pp.265-273
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    • 1984
  • To investigate nitrogen supplying effect of some slowrelease N-fertilizers on barley in upland soil sulfurcoated urea(SCU), ureaform and melamine (1,3,5-Triazine-2,4,6-triamine) were treated and compared to urea. In addition, thiourea as a nitrification inhibitor was also tested. Effects of variable soil condition such as moisture content, pH and temperature on nitrogen supplying ability of the fertilizers and on growth of barley were studied through incubation test and pot culture and the obtained results were summarized as follows: The releasing rate of ammonia from urea, SCU, ureaform and melamine were resulted as 27-59%, 25-39%, 9-34% and 0.7-4.3% at maximum conversion rate, respectively. Nitrification rate of the tested fertilizers was higher at pH 6.54 markedly than at pH 4.73. Addition of thourea depressed the formation of $NO_3$ during four weeks of incubation period. Mixed application of ureaform with small amount of urea contributed to nitrogen supply till latter growth stage of barely Basal application of melamine showed lowest nitrogen supplying ability and injurious response on barley growth.

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Expression of Nerve Growth Factor during Urinary Bladder Development (방광 발달과정에서 Nerve Growth Factor의 발현)

  • Lee, Kyoung Eun;Hong, Chang Hee;Kang, Hee Jung;Kim, Dug Ha
    • Clinical and Experimental Pediatrics
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    • v.48 no.4
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    • pp.411-415
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    • 2005
  • Purpose : This study was performed to determine the developmental expression pattern of nerve growth factor(NGF) in the urine of healthy children. It was hypothesized that NGF may contribute to the development of the spinobulbospinal micturition reflex that represents the adult micturition pattern. Methods : Voided urine was collected in 60 healthy children during the first 5 years of life(0-1 month, n=10; 1 month-1 year, n=10; 2 years, n=10; 3 years, n=10; 4 years, n=10). The urinary NGF was analyzed by using an enzyme linked immunosorbent assay. Results were normalized based on creatinine or total protein in urine. Results : NGF was significantly greater among neonates compared to other age groups(P<0.05). NGF levels declined during 1 month to 1 year and increased by age 2 years. NGF levels at age 3 years were less than in neonates examined. When comparing the NGF levels according to continence in children over 1 year old, NGF levels were significantly lower in children with continence than in children with incontinence(P<0.05). Conclusion : These data suggest that NGF is involved in the achievement of continence and in mechanisms of bladder nerve growth and in the reorganization of bladder reflex pathway.