• 한국복합재료학회:학술대회논문집
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• 한국복합재료학회 2002년도 추계학술발표대회 논문집
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• pp.88-91
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• 2002

The two dimensional size effect of specimen gauge section (length x width) was investigated on the compressive behavior of a T300/924 [45/-45/0/90]3s, carbon fiber-epoxy laminate. A modified ICSTM compression test fixture was used together with an anti-buckling device to test 3mm thick specimens with a 30$\times$30, 50$\times$50, 70$\times$70, and 90mm$\times$90mm gauge length by width section. In all cases failure was sudden and occurred mainly within the gauge length. Post failure examination suggests that $0^{\circ}$ fiber microbuckling is the critical damage mechanism that causes final failure. This is the matrix dominated failure mode and its triggering depends very much on initial fiber waviness. It is suggested that manufacturing process and quality may play a significant role in determining the compressive strength. When the anti-buckling device was used on specimens, it was showed that the compressive strength with the device was slightly greater than that without the device due to surface friction between the specimen and the device by pretoque in bolts of the device. In the analysis result on influence of the anti-buckling device using the finite element method, it was found that the compressive strength with the anti-buckling device by loaded bolts was about 7% higher than actual compressive strength. Additionally, compressive tests on specimen with an open hole were performed. The local stress concentration arising from the hole dominates the strength of the laminate rather than the stresses in the bulk of the material. It is observed that the remote failure stress decreases with increasing hole size and specimen width but is generally well above the value one might predict from the elastic stress concentration factor. This suggests that the material is not ideally brittle and some stress relief occurs around the hole. X-ray radiography reveals that damage in the form of fiber microbuckling and delamination initiates at the edge of the hole at approximately 80% of the failure load and extends stably under increasing load before becoming unstable at a critical length of 2-3mm (depends on specimen geometry). This damage growth and failure are analysed by a linear cohesive zone model. Using the independently measured laminate parameters of unnotched compressive strength and in-plane fracture toughness the model predicts successfully the notched strength as a function of hole size and width.

• 산업융합연구
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• 제17권4호
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• pp.21-31
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• 2019

이 연구는 장애학생이 받는 재택순회교육과 지역사회복지서비스가 사회적응행동과 자아효능감에 미치는 영향을 살펴보기 위하여 효과성 연구를 하였다. 이를 위하여 2018년 3월 6일부터 9월 5일까지 6개월 동안 7명의 장애학생으로 구성하여 사전조사와 개입까지 참여하였으나 건강상의 이유로 2명의 장애학생이 끝까지 참여하지 못하여 사후검사에서는 5명의 장애학생이 참여하여 연구를 실시하였다. 연구의 결과는 다음과 같다. 첫째, 재택순회교육을 받으며 지역사회서비스를 받은 장애학생들은 사회적응행동 영역에서 사회인지, 대인관계, 사회적응, 직업기능과 밀접한 관련이 있는 것으로 분석되었다. 둘째, 지역사회복지서비스에 참여함으로서 자아효능감이 높아진 것으로 분석되었다. 즉 자신의 과제능력에 대한 자신감 및 신뢰감이 긍정적으로 평가되었다. 또한 본 연구에 참여한 재택순회교육 교사, 지역사회복지서비스를 진행했던 연구자, 장애인복지관 종사자, 자원봉사자, 장애학생의 가족 등이 긍정적으로 인식하였다. 이러한 결과를 토대로 재택순회교육과 지역사회복지서비스를 연계하므로 장애학생의 사회통합을 위하여 사회적응행동 프로그램이 다양화 되어야 함을 기초자료로 제시하였다.

• Clinics in Shoulder and Elbow
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• 제6권1호
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• pp.72-79
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• 2003

Purpose: To compare the results of arthroscopic rotator cuff repair and subacromial decompression in partial thickness rotator cuff tear (PTRCT) with those in full thickness rotator cuff tear (FTRCT). Subjects and method: Of the 46 patients who were rested of the rotator cuff tear based on the operational findings, 42 patients who were able to receive a serial follow-up for 2 years were selected as the study subjects. The average age of the patients at the time of the operation was 55 years, and the mean duration of the follow-up was 34 months. The subjects included 22 cases of PTRCT and 20 cases of FTRCT. In terms of rotator cuff repair, the average number of tendon to tendon repair (TTR) was 1 in both PTRCT and FTRCT, and that of tendon to bone repair (TBR) was 1 and 3 in PTRCT and FTRCT, respectively. The average number of use of suture anchor was 1 and 2 in PTRCT and FTRCT, respectively. The level of shoulder pain and function of the subjects were measured using shoulder functional evaluation score of American shoulder and elbow society (ASES score) at before and 2 years following the operation. Results: At the final follow-up following the operation, PTRCT group showed changes in scores from 7.2 to 0.9 on average pain score and 34 to 91 on ASES score, whereas FTRCT group showed changes in scores from 7.6 to 1.2 on pain score and 29 to 88 on ASES score. There were no significant differences between the two groups (P > 0.05). The average range of motion of shoulder significantly increased in both groups at the final follow-up in comparison with the pre-operative time point. The evaluation at the final follow-up showed that 93% of the total subjects showed good or excellent results, and 95％ showed satisfactory results from the procedure with regard to pain reduction and functional outcomes. Two cases of the 3 fair results were caused by acromioclavicular arthritis. Conclusion: It may be anticipated that arthroscopic rotator cuff repair and subacromial decompression may bring satisfactory post-operative outcomes in both PTRCT and FTRCT on pain relief and functional recovery. However, careful preoperative examination of the acromioclavicular joint is critical to avoid failures of these procedures.

• 재활치료과학
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• 제1권1호
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• pp.57-70
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• 2012

목적 : 본 연구는 뇌졸중 환자를 대상으로 신경되먹임(Neurofeedback; NFB)을 통한 뇌파 훈련과 컴퓨터보조 인지 재활(Computer-Assisted Cognitive Rehabilitation; CACR) 훈련이 뇌졸중 환자의 인지, 상지기능에 미치는 영향을 알아보고자 한다. 연구방법 : 뇌졸중 후 3개월에서 1년 이내이며, 경기도 소재 병원에서 입원치료중인 환자 44명을 NFB군(14명)과 CACR군(14명), 대조군(16명)의 세 그룹으로 배치시켰다. NFB 훈련과 CACR 훈련은 6주간에 걸쳐 실시하였으며 사전, 사후 평가기간을 포함하여 총 9주간 연구를 진행하였다. 측정은 인지, 상지 기능을 측정하였으며 훈련 전후와 그룹간의 인지, 상지 기능의 변화를 분석하였다. 결과 : 연구대상자들의 훈련방법에 따른 인지기능의 차이를 알아보기 위해 한국형 간이정신상태 검사(Mini-Mental State Examination-Kore; MMSE-K) 총점의 변화를 분석한 결과 NFB군은 실험전 16.92 점에서 실험 후 20.50 점으로 유의한 차이를 보였고 CACR군은 실험 전 17.85 점에서 실험 후 22.14 점으로 유의한 차이를 보였으며 대조군도 실험 전 18.62 점에서 실험 후 19.25 점으로 유의한 차이를 보였다. 그러나 사후검정 결과 실험방법 간 차이는 보이지 않았다. 상지기능의 차이를 알아보기 위해 뇌졸중 상지 기능인 뇌졸중 상지 기능 검사(Manual Function Test; MFT) 총점을 분석한 결과 상지운동 영역에서 NFB군은 실험 전 4.64 점에서 실험 후 5.50 점으로 유의한 차이를 보였고 CACR군은 실험 전 3.92 점에서 실험 후 5.35 점으로 유의한 차이를 보였으며 대조군도 실험 전 3.68 점에서 실험 후 4.75 점으로 유의한 차이를 보였다. 그러나 사후검정 결과 실험방법 간 차이는 보이지 않았다. 결론 : 본 연구는 NFB 훈련과 CACR 훈련, 전통적 재활훈련 이후 인지기능과 상지 기능의 향상을 제시하였으며 앞으로 각 개인에게 적절한 훈련방법을 적용한 NFB 훈련과 CACR 훈련 프로그램 개발 및 프로토콜이 제시되어야 할 것이다.

• 한국언론정보학보
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• 제74권
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• pp.7-37
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• 2015

이 연구는 오래되고 집요한 모습을 띠는 게임중독 담론과 게임을 직업으로 삼는 프로게이머가 어떻게 한 사회 내 유사한 권력 제도에 의해 동시에 언급되는지를 살피고자 했다. 프로게이머는 하트(Hardt)와 네그리(Negri)가 논의하는 '경제적 탈근대화(postmodernization)'의 거시적 흐름 속에서 등장한 오락 산업의 일환이다. 하트와 네그리는 '경제적 탈근대화'를 경제적 행위(도구적 행위)와 인간적 행위(반(反)도구적 행위) 사이의 경계를 허무는 새로운 노동양식-비물질 노동(immaterial labor)-으로 특징지으며, 그 안에 저항적 실천의 맹아가 존재한다고 주장한다. 이러한 관점에서 프로게이머는 (비물질 노동의 한 갈래인) '정동노동(affective labor)'을 수행하며 근대적 권력으로부터 탈주할 수 있는 잠재력을 지닌다고 볼 수 있다. 하지만 프로게이머 노동이 수행되는 구체적인 결을 살펴보면, 경쟁과 선택의 원리를 통과하기 위해 자신의 정동을 매우 조직적으로 관리하고 전략적이며 합리적으로 통제하고 있음을 알 수 있다. 프로게이머의 노동은 탈근대적인 양식을 취하고는 있지만, 근대적 노동 윤리에 철저하게 종속되어 근대성 위반의 잠재력을 잃어버렸다. 결국 프로게이머와 중독담론은 표면적으로 대조를 이루는 듯 보이나, 근면 성실한 태도를 강조하는 프로테스탄스적 노동 윤리와 맥을 같이 한다는 점에서 쌍생아적 지위를 지니고 있었다.

• 한국임상보건과학회지
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• 제2권1호
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• pp.59-71
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• 2014

Purpose. Medical tourism is recently becoming a new industry with great growth potential. The South Korean government is shifting medical tourism from simple cultural tourism to a high value-added industry with a new paradigm. Methods. The government has been providing positive support and marketing policies since the introduction of the article concerning foreign patient attraction to the medical law in 2009, and various types of medical institutions around the country has participated actively in medical tourism by themselves or in cooperation of government bodies and made increasingly greater performance. Results. This study obtained the following results. The medical institutions in Korea have been making efforts to see more development and profitability in diverse ways, including medical tourism for foreign patients and the advance of the Korean medical institutions into foreign markets. However, many local governing bodies and medical institutions participating in medical tourism around the country have primarily focused on examination and treatment on the basis of foreign patients' visit to South Korea and rarely built a medical network with other countries directly for medical tourism. This study presents a case of building a local medical network and a network for international medical tourism successfully on the basis of the local medical association, CMP, which has been formed naturally in Busan. The success factors for CMP included 1) enthusiasm of the official in charge; 2) the medical level, the service level, and open-mindedness of participant medical institutions; 3) cost efficiency due to executive office management with no costs, no conflicts, and constant partnership; 4) security of non-competitive expertise for participants; 5) local factors of CMP; 6) participation of good agencies; 7) reinforcement of participation networks; and 8) post facto management and local doctor management. Conclusions. Its positive effects included patient introduction and greater profitability on an internal basis as well as construction of the collaboration system with the institutions related to medical tourism and confidence. However, there are some limitations: it is still difficult to predict performance due to the short period of their activities, and it is necessary to continue to observe their constant activities since a single medical association was involved.

• Asian Pacific Journal of Cancer Prevention
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• 제13권3호
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• pp.861-866
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• 2012

This study assessed the effectiveness of three intervention strategies to improve the participation rate of gastric cancer screening among people who had never undergone such screening, and those who had been screened for the disease, but not recently. It was conducted in the Ilsandong-gu District of Goyang City, Korea. The population for the current study was restricted to male residents, aged 40-65 years, who received an invitation letter to undergo gastric cancer screening from the National Health Insurance (NHI) Corporation at the beginning of 2010. The subjects were divided into two categories according to their screening history: never-screened, and ever-screened. A total of 2,065 men were eligible: 803 never-screened and 1,262 ever-screened. In each screening category they were randomly assigned to one of three intervention groups: 1) tailored telephone counseling; 2) tailored postcard reminder after tailored telephone counseling;and 3) tailored telephone counseling after tailored postcard reminder. At 3 months post-intervention, never-screened men with any intervention were more likely to undergo gastric cancer screening (OR=2.75, 95% CI: 1.22-6.18) compared to those in the reference group (no intervention). However, there was no statistically significant intervention effect in ever-screened men (OR=1.21, 95% CI: 0.65-2.27). Examination of the intervention effects by intervention group among never-screened men showed that those in the postcard reminder after telephone counseling group to be statistically significantly more likely to undergo gastric cancer screening (OR=4.49, 95% CI: 1.79-11.29) than the reference group (no intervention). Our results highlight that use of tailored postcard reminders after tailored telephone counseling is an effective method to increase participation in gastric cancer screening among men who had never been screened.

• 미술이론과 현장
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• 제7호
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• pp.7-36
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• 2009

This paper intends to examine the significance of the "Minjoong Misool(People's art)" of the 1980s emerged in Korea in its social, cultural, and art historical context. This paper also aims to provide an analysis of the meaning and form of the individual artist's works, which have been overlooked under the dominant discourse that has emphasized their political role as a collective group. In particular, this paper scrutinizes the work of "Critical Realists" by examining the way in which they perceived Korean society in the early 1980s and visualized their experiences of the period. The figurative art newly emerged in the early 1980s challenged the formalist Modernism, which was adopted into Korea and translated into monochrome paintings and the work of the conversative academicism of the 1970s. The figurative art encouraged a social communication and moreover it intended to criticize the conflicts in the political, economical, and social domains in Korea. The targets of its critique include the unavoidable results of the unprecedented development of economy, various social phenomena of the post-industrial society, and the growth of the commercialized kitsch culture. Along with Shin, Hak-chul's work that incorporates collage technique since the 1980s, the work of some members of "Reality and Utterance" and "Im- sul-nyun" exemplify their critical interests in disclosing the false dream of wealth and happiness by both referring to and drawing on the utopian fantasy manipulated and distributed by mass media and commercial advertisements. This paper pays particular attention to Nouvelle Figuration emerged in France and Europe during the 1960s, which is comparable to the new figurative art emerged in Korea during the 1980s. Nouvelle Figuration criticized the autonomy in art isolated itself from political and social reality after WWII, in particular the indifference of Informel and abstract art as well as American abstract art. Moreover it became rather politicized around May of 1968. Given that French Nouvelle Figuration was introduced in Korea in 1982 and made a significant contribution to the formation of figurative art in Korea, it should be noted that the new figurative art emerged in the 1980s in Korea cannot be categorized merely in relation to People's Art. This paper intends to critically redress the notion that People's art was formed in the particular political, economical, and cultural context of Korea independent of the contemporary artistic practices outside Korea. It will provide a critical examination and analysis of the content and form of the new figurative art, from which People's Art was germinated, in the global context.

• 대한간호학회지
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• 제31권2호
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• pp.304-314
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• 2001

Major purposes of this study were to investigate the administration patterns of analgesics and sedatives in SICU and to identify the factors influencing the use of prn analgesics and sedatives by ICU nurses. The sample of this descriptive study was 50 adult patients in SICU and 53 ICU nurses. Patient's medical records were reviewed to investigate names, doses, the routes of administration, the interval of administration, and the type of prescription of sedatives and analgesics administered. Study medications were narcotics, hypnotics, and antipsychotics. To identify the factors influencing the use of prn analgesics and sedatives, 53 ICU nurses checked 9 items, and rank them from first to fifth. The selection of items was based on the previous studies and the experience of the investigator. The results of the study are as follows: 1. The mean age of the subjects was 53 years, 24 patients out of 50 subjects had received mechanical ventilation therapy. Most of the patients received neurosurgeries and abdominal surgeries. 2. For 4 days, 13 total study medications and combination of these were administered to the patients. Commonly prescribed drugs were Ketoprofen and Midazolam. Twenty six to fourty two percent of the patients did not receive any drugs for at least one day during the four days. 3. On the average, the study drugs were administerd 1.4 to 2.6 times per day during 4 days. 4. More than 50 percent of the prescription was as-needed (prn) except those of the POD 3. Fourteen percent of the patients did not have any prescription for sedation and pain control after surgery. 5. Examination of the frequency of sedatives and analgesics bolus administration revealed that a greater number of doses were given during daytime (from 7 am. to 7 pm.) than nighttime (from 7 pm. to 7 am.). The difference was significant at Alpha, .05. 6. First factor that most influenced nurses to administer sedatives and analgesics for intubated patients was the evaluation of patient's vital signs (51%). For non- intubated patients, the factors that nurses considered important were the patients' complaints of pain (64%) and evaluations of patients' vital signs (23%). In conclusion, the results of this study indicate that patients in SICU might not receive enough analgesics and sedatives to feel completely free from pain during the post operational period. Future study should be focused on the evaluation of the adequacy of current practice for pain and anxiety control in terms of the SICU patient's response.

• 대한디지털의료영상학회논문지
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• 제11권2호
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• pp.115-119
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• 2009

I think this will be valuable reference for assuring consistency and homogeneity of clarity and managing dental radiation equipment by experimentation of dental radiation equipment permanent which based on KS C IEC 61223-3-4 standard and KS C IEC 61223-2-7. Put a dental radiation generator and experiment equipment as source and film(sensor) length within 30 em, place the step-wedge above the film(sensor). Tie up tube voltage 60 kVp, tube current 7 mA and then get an each image through CCD sensor and film by changing the exposure time as 0.12sec, 0.25sec, 0.4sec. Repeat the test 5times as a same method. Measure the concentration of each stage of film image, which gained by experiment, using photometer. And the image that gained by CCD sensor, analyze the pixel value's change by using image J, which is analyzing image program provided by NIH(National Institutes of Health). In case of film, while 0.12sec and 0.25sec show regular rising pattern of density gap as exposure time's increase, 0.4sec shows low rather than 0.12sec and 0.25sec. In case of CCD sensor density test, the result shows opposite pattern of film. This makes me think that pixels of CCD's sensor can have 0~255 value but it becomes saturation if the value is over 255. The way that getting clear reception during decreasing human's exposed radiation is one of maintaining an equipment as a best condition. So we should keeping a dental radiation equipment's condition steadily through cyclic permanent test after factor examination. Even digital equipment doesn't maintain a permanent, it can maintain a clarity by post processing of image so that hard to set it as standard of permanent test. Therefore it would be more increase the accuracy that compare a film as standard image. Thus I consider it will be an important measurement to care for dental radiation equipment and warrant homogeneity, consistency of dental image's clarity through comparing pattern which is the result from factor test against cyclic permanent test.