앉고 일어서기 동작에서 점진적 체중 이동을 이용한 시각적 되먹임 훈련이 만성 편마비 환자의 균형 및 보행능력에 미치는 영향

김경환,박성훈,김형민,박노욱,김다연,Kim, Kyung-hwan,Park, Sung-hoon,Kim, Hyung-min,Pak, Noh-wook,Kim, Da-yeon 대한고유수용성신경근촉진법학회 2017 PNF and Movement Vol.15 No.1

Purpose: This study aimed to investigate the effect of visual feedback training-for gradual weight shift in sit-to-stand training-on the balance and walking abilities of chronic hemiplegia patients. Methods: Twenty patients with chronic hemiplegia volunteered to participate in this study. The experimental group received visual feedback for gradual weight shift in the sit-to-stand training, while the contrast group followed the standard process for the sit-to-stand training. The evaluation of the balance and walking ability was conducted with the functional reach test (FRT), Berg balance scale (BBS), five time sit-to-stand (FTSTS) test, timed up and go (TUG) test, 10 m walk test (10MWT), balancia, activities-specific balance confidence (ABC) scale, and falls efficacy scale (FES). Results: In the results before and after intervention, there was a significant difference in TUG, 10MWT, ABC, and FES in the visual feedback training group (p < 0.05). In the control group, there was a significant difference in the 10MWT and ABC (p < 0.05). Also, in the evaluation of the postural fluctuations, the control group data showed a significant increase in Covar. The visual feedback group showed a significant difference in the W average. Conclusion: The visual feedback training group showed some improvement in terms balance and walking ability and on the ABC scale and FES. Therefore, if the diagonal progressive weight bearing exercise is combined with the various patterns and basic principles of PNF, it may be a more efficient intervention method.

고양지역 두 병원에서의 약물 중독 양상

김경환,박준석,신동운,노준영,김혜진,구홍두,조진경,김아진,Kim Kyung-Hwan,Park Jun-Soek,Shin Dong-Wun,Rho Jun-Young,Kim Hey-Jin,Gu Hong-Du,Cho Jin-Kyung,Kim Ah-Jin 대한임상독성학회 2006 대한임상독성학회지 Vol.4 No.1

Purpose: In the year of 2005, it enforced the basic study for establishing program of Poison Control Center by National Institute of Toxicologic Research. The object of our survey is to analyze the characteristics of intoxication from the City of Goyang by same protocol. Methods: We retrospectively reviewed the data of medical records of the intoxication patient in the two hospitals of the Goyang from 2004 June 1st to 2005 May 31th. The investigation protocol applied the TESS report form which was used from the Basic study for establishing program of Poison Control Center. Results: The intoxication patients were total 269 persons, the patients of A hospital were 184 persons, B hospital were 185 persons. The most common intoxication materials were medicines, in afterwords it was an agricultural chemical. The most common place of intoxication was the home. The intentional suicidal attempts in the reason of intoxication were 51.2%. The rate of the patients who discharges from the emergency department was 50.4% and death rate was 4.3%. Conclusion: We concluded that the continuous and systemic report and analysis should be accomplished from the Goyang area.

수직자기기록용 박막의 제작

김경환,김명호,손인환,김재환 ( Kyung Hwan Kim,Myung Ho Kim,In Hwan Son,Jae Hwan Kim ) 한국전기전자재료학회 1997 한국전기전자재료학회 추계학술대회논문집 Vol.1997 No.1

베체트씨병에 의한 대동맥판 폐쇄부전의 수술적 치료

김경환,김기봉,김원곤,김주현,안혁,Kim, Kyung-Hwan,Kim, Ki-Bong,Kim, Won-Gon,Kim, Joo-Hyun,Ahn, Hyuk 대한흉부심장혈관외과학회 2000 Journal of Chest Surgery (J Chest Surg) Vol.33 No.5

Background: Cardiac involvement of Behcets disease is very rate, however, the prognosis of Behcet disease depends on cardiovascular complications. In this article, we described surgical treatment of aortic insufficiency with Behcets disease. Material and Method: From March 1986 to February 1998, we operated on 10 patients of aortic insufficiency with Behcets disease. Male to female ratio was 8 to 2, and age ranged from 21 to 40 years(mean 32.8 years). There were 8 patients with evidence of Behcets disease and another 2 patients had some suspicious findings of Behcets disease(i.e., prosthetic value dehiscence, hypertrophied aortic wall). Adequate preoperative medical treatment for Behcets disease was done in 3 patients. Result: We performed 24 open heart surgeries in 10 patients. Redo value replacements using prosthetic valves were done in 4 patients. Among them, 2 patients were operated on for a second redo valve replacement and one of them operated on for a 4th and 5th operation because of recurrent paravalvular leakage. These 4 patients expired. 1 patient who had undergons tissue value replacement is alive. 1 patient who underwent Cabrol operation expired dut to rupture of graft anastomosis site. We used homografts in 3 patients. In 2 of them, we performed aortic root replacement and subcoronary valve replacement in another patient. The patient who underwent subcoronary valve insertion had remnant aortic insufficiency, so we are closely observing him. We also performed Ross operation in a 24 year old female who suffered severs aortic insufficiency and endocarditis after aortic valvuloplasty. 5 patients are alive and mean follow up duration is 49.0 months. Among them, we used homografts or sutografts in 4 patients. We could observe excellent clinical results in the patients who underwent aortic root replacement using homograft and they were treated medically for Behcets disease. Conclusion: We concluded that adequate preporative diagnosis, clinical suspicion, and periopertive medical treatment for Behcets disease are very important for the result of surgical management of aortic insufficiency with Behcets disease. The use of homograft or autograft was helpful for the healing of anastomosis site and we should carefully observe the long term follow up results.

CPM Bar Chart 기법을 활용한 일정계획

김경환,김수유,김재준,Kim Kyung-Hwan,Kim Soo-Yoo,Kim Jae-Jun 한국건설관리학회 2004 건설관리 : 한국건설관리학회 학회지 Vol.5 No.5

본 연구에서는 바차트(bar chart) 기법과 CPM 기법의 장점을 결합한 CPM bar chart(CBC) 기법을 제시한다. CBC는 기존의 fenced bar chart(FBC)의 장점을 유지하면서 단점을 보완한 것으로, 작업 관계를 나타내는 fence에 방향성을 부여함으로써, 기존 FBC에서 상당한 혼란을 유발하는 fence의 분리과정 없이 작업들의 관계를 표현할 수 있다. 또한, fence의 분리를 파악하기 위해 더미작업(dummy activity)을 확인하는 과정이 생략되어 보다 손쉽게 작성할 수 있는 장점도 있다. 바차트의 간결성을 유지하면서 CPM의 네트워크 논리 표현이 가능해짐에 따라, CBC는 다양한 프로젝트 참여자들 간의 원활한 의사소통에 기여하리라 예상된다. 또한, resource constrained scheduling, resource leveling, 작업 분리가 고려된 일정 조정, 공기 지연 분석 등의 CPM 기법에 기초한 다양한 일정 계획 및 관리에도 적용이 용이하여, 실무뿐만이 아니라 공정관리 교육과정에서도 활용성이 높으리라 기대된다. This paper proposes the CPM bar chart (CBC), a hybrid of the bar chart and the critical pad method (CPM). The CBC overcomes shortages of the fenced bar chart, while still keeping advantages. The fence with direction is applied instead of the broken fence, which triggers considerable problems to identify and apply in the fenced bar chart. In addition, the notorious task to find dummy activities is no longer required. Upon the benefits of simplicity in the bar chart and logical work sequence in the CPM network. the CBC provides a relatively easy way to create and understand a schedule, thus improving communication quality between project participants. With the advantages, the CBC can also be effectively applied to various scheduling techniques such as resource constrained scheduling, resource leveling, scheduling with activity split, delay impact analysis, etc.

참여정부의 허와 실 - 시장원리에 맞는 주택정책 수립해야

김경환,Kim, Gyeong-Hwan 한국주택협회 2006 주택과 사람들 Vol.197 No.-

이중대격에 대한 자율모듈적 분석

김경환,Kim, Kyunghwan 한국콘텐츠학회 2022 한국콘텐츠학회논문지 Vol.22 No.10

The purpose of this paper is to provide a multi-modular account of double accusative constructions in Korean in the framework of Autolexical Grammar. The grammar views syntactic, semantic, and morphological structures of sentences as modules which are generated simultaneously and independently. Unlike syntactocentric theories, this paper analyzes semantic characteristics of double accusatives through function-argument (F/A) structure along with roles structure (RS) and information structure (IS). In F/A structure of double accusatives, the first accusative becomes an argument of a predicate, unlike the possessive, which is an argument of a relational noun. Furthermore, the first accusative of double accusatives takes the role of patient in RS, which allows it to become the subject of a passive sentence. On the other hand, the second accusative, which is originally the possessee, becomes a focal area in IS. Therefore, the purpose of double accusatives is twofold: one is to turn the possessor into an independent argument of a predicate which takes patient role, and the other is to turn the possessee into a focus. Such semantic characteristics of double accusatives can be expressed by means of multi-dimensional structures of F/A structure, RS, and IS of Autolexical Grammar, which allows an integrated account of the phenomenon.

안드로이드 플랫폼 상에서 동기화가 고려된 통합 커서의 설계 및 구현

김경환,하주호,원종필,이의성,김주민,손진호,Kim, Kyung-Hwan,Ha, Jo-Ho,Won, Jong-Pil,Lee, Uee-Song,Kim, Joo-Min,Son, Jin-Ho 대한임베디드공학회 2011 대한임베디드공학회논문지 Vol.6 No.3

Android platform provides a content provider and a cursor mechanism to access the internal SQLite engine. Content providers not only store and retrieve data but also make it accessible to applications. Applications can only share data through content provider, since there's no common storage area that Android packages can access. Cursor is an interface that provides random read-write access to the result set returned by a database query. However, this cursor possesses two major limitations. First, a cursor does not support a join clause among cursors, since the cursor can only access a single table in the content provider. Second, the cursor is not capable of creating user-customized field in the predefined content providers. In this paper, we propose the unified cursor architecture that merges several cursors into a single virtual cursor. Cursor translation look-aside buffer (TLB), column windowing mechanism and virtual data management are the three major techniques we have adopted to implement our structure. And we also propose a delayed synchronization method between an application and a proposed unified cursor. An application can create a user-customized field and sort multiple tables using a unified cursor on Android platform.

각막내피세포의 증식 및 손상의 회복에 대한 ROCK 억제제 Y-27632의 효과

김경환,정진권,류진숙,고아영,김미금,위원량,Kyeong Hwan Kim,Jin Kwon Chung,Jin Suk Ryu,MS,Ah Young Koh,BS,Mee Kum Kim,Won Ryang Wee 대한안과학회 2013 대한안과학회지 Vol.54 No.3

Purpose: To investigate the effect of ROCK inhibitor Y27632 on the human corneal endothelial cell proliferation in vitro and in vivo. Methods: Using corneal endothelial cells isolated and cultured from human donor cornea, we compared the effect of Y27632 (10 μM ) on the proliferation in vitro by flow cytometry analysis. For the evaluation of the effect of Y27632 (10 mM) in vivo, corneal thickness and wound area were analyzed for the corneal endothelial wound rabbit model induced by transcorneal freezing. Results: Ki67 positive cells were increased in the Y27632 group (9.1 ± 4.1 %) than the control group (8.0 ± 5.9 %), whereas annexin V positive cells in the Y27632 group (2.9 ± 1.0 %) were decreased compared to the control group (4.2 ± 2.2 %). However these were not statistically significant. Wound area after Y27632 application in animal model is concerned, the control group showed significant smaller area (45.6 ± 0.6 mm2) compared to the Y27632 group (49.3 ± 0.8 mm2; p = 0.029, Mann-Whitney U test), however, these were not significantly different from the baseline. Corneal thickness was not different between the two groups. Conclusions: Different from other reports for the effect of Y27632, no significant effect on the proliferation in vitro and wound healing in vivo, regarding human corneal endothelial cell, were found in this study.

대동맥궁 절제술의 임상적 고찰

김경환,안혁,Kim, Kyung-Hwan,Ahn, Hyuk 대한흉부심장혈관외과학회 1994 Journal of Chest Surgery (J Chest Surg) Vol.27 No.11

From October 1990 to May 1993, 19 patients underwent replacement of the transverse aortic arch. [10 men, 9 women, mean age 52.5 years] Underlying diseases were acute aortic dissection [10 cases], chronic aortic dissection [4 cases],and aortic arch aneurysm [ 5 cases]. In 19 patients, 10 underwent partial replacement and 9 underwent total arch replacement. The cerebral protection was achieved by profound hypothermia [rectal temperature,16$^{\circ}$ to 2$0^{\circ}C$] associated with total circulatory arrest [mean 35.5 minutes]. In one patient, the aortic arch distal to the left common carotid artery was resected with the distal arch being cross-clamped and in another two patients, the selective cerebral perfusion was also applied during the period of total circulatory arrest via innominate artery and left common carotid artery because of longer total circulatory arrest time. Among 14 patients of aortic dissecton, 10 presented hypertension, 1 presented Marfan syndrome, 1 presented pregnancy-induced hypertension and 2 revealed no evidence of hypertension. All of the above 14 patients complained chest pain. Among 5 patients of aortic arch aneurysm, Be het disease was suspected in only one patient and atherosclerotic aneurysm was proved in another 4 patients. The overall hospital mortality was 32% [6/19]. In aortic dissection, the mortality was 43% [Acute aortic dissection 30%, chronic aortic dissection 75%] and in aortic arch aneurysm, the mortality was 0%. Follow-up was done in all survivors for from 7 months to 36 months[mean,17.3%].