신발 제조업에의 린 생산방식 도입

윤재홍,송한식,권치명,정문상 東亞大學校 經營問題硏究所 1994 經營論叢 Vol.15 No.-

This paper is concerned with a lean production system to improve the productivity of shoes manufacturing industries. For this purpose, this research first reviews the environmental characteristics of shoes manufacturing industries and invetigates the current problems of shoes production systems. Shoes manufacturing process roughly consists of three process lines shoes uppers line, shoes soles line, and assembling line of shoes uppers and soles. Two major problems in shoes production system are a large amount of work-in-process(WIP) inventories, and the low rate of matching shoes uppers and soles in an assemblying line. Most of shoes manufacturing companies have more than a 3-days WIP inventories in every process line to avoid the blocking the production. Particularly the assemblying line has 5-7days buffers of shoes uppers and soles to maximize the productivity of manufacturing final shoes, however, the matching rate of shoes uppers and soles in the assemblying line is about 50%. These problems are from a low efficiency in inventory control mainly due to (1) too many order specification of sizes, colours, types and different due dates, and (2) a large amount of WIP inventories. To reslove above mentioned problems, we sugggest a lean production system of pull-method for reduction of WIP inventories and improvement of matching rate of shoes uppers and soles in assemblying line. Compared to a push production system(current production system), a pull production system may have a number of adventages in controlling inventories and balanced match of the sole parts and uppers parts when it applied to shoes manufacturing process. As an alternative to control the pull production method, we design a Kaban for production and inventory control. Also we design the Kaban circulations model for the production lines and inventory stores, and a shoes manufacturing information system to incorporate the Kaban system. We expect that the effective adoption of the pull production system to shoes manufacturing system will show better results in improving the matching rate, and reducing the WIP inventories and production lead time. These effects may also give more flexible production planning and raw matiarial procurement planning. We finally consider this research would be helpful in designing the lean shoes production system

열대 지역에서 통일형 초다수성 벼 품종의 생육 및 수량성 비교

이지윤,준현,성환,손영보,송유천,한상익,박동수,권영업,이철원,이종희 忠北大學校 農業科學硏究所 2015 農業科學硏究 Vol.31 No.2

외상에 의하여 함입된 상악 중절치의 교정적 견인

한윤범,이제호,최형준,손흥규,김성오,송제선,최병재 대한소아치과학회 2009 大韓小兒齒科學會誌 Vol.36 No.2

외상에 의한 치아의 함입은 치아가 치조골 방향으로 변위되어 있는 상태이다. 함입성 탈구는 다른 유형의 탈구성 손상에 비하여 드물게 발생하고, 낙상에 의한 경우가 많으며, 소녀보다는 소년에서 호발하는 것으로 보고되었다. 치아가 함입되었을 때, 치수괴사나 유착, 치근흡수, 근관폐쇄, 변연골 상실 등과 같은 합병증이 발생할 수 있으며, 치아 경조직과 치아 지지조직 등의 손상이 동반되는 경우가 흔하므로, 예후를 예측하고 정확한 진단 및 치료계획을 수립하는데 어려움이 있다. 함입된 치아의 치료는 자발적으로 재맹출하기를 기다리거나, 교정적 견인 또는 외과적으로 재위치 시키는 방법이 있다. 이 증례는 외상으로 인하여 상악 좌측 중절치가 함입되었다는 주소로 내원한 6세 7개월 된 여아에서, 함입된 치아의 자발적인 맹출을 기대하였으나 맹출이 되지 않아서, 교정적으로 견인하여 맹출시킨 경우로 양호한 결과를 얻었기에 이를 보고하는 바이다. Traumatic intrusion is a type of injury that involves axial displacement of a tooth toward the alveolar bone. Its occurance is relatively rare compared to other types of luxation in permanent dentition. It is more common in boys than in girls, and most common etiology of intrusion is fallen down. Various complication may occur following traumatic intrusion, such as pulp necrosis, root resorption, pulp obliteration and marginal bone loss. In addition, traumatic intrusion is commonly combined with hard or soft tissue injuries. Therefore, it is difficult to establish proper treatment plan. Choice of treatment for an intruded tooth by trauma include waiting for spontaneous re-eruption, orthodontic repositioning, and surgical repositioning. In this case, we repositioned the intruded central incisor using orthodontic traction, in a six-year old girl, which failed to re-erupt spontaneously.

외상성 신동맥 색전증 1례

한병규,김욱현,문기혁,송윤섭,박영호 순천향의학연구소 2004 Journal of Soonchunhyang Medical Science Vol.10 No.2

Renal artery thrombosis may result from external trauma of a blunt nature. Such injury is induced by rapid deceleration resulting in the stretching of the renal vasculature, disruption of the arterial intima-the least elastic layer of the arterial wall and eventual thrombosis. The treatment of renal artery thrombosis is controversial, with physician's options divided between prompt surgical exploration with vascular repair and clinical observation. We experienced 1 case of traumatic renal artery thrombosis and report that with a brief review of the literature.

최소차원 관측기를 이용한 평면 X-Y 스테이지의 나노 위치제어

김재열,윤성운,곽이구,안재신,한재호 한국공작기계학회 2003 한국공작기계학회 추계학술대회논문집 Vol.2003 No.-

Performance test of servo control system that is used ultra-precision positioning system with single plane X-Y stage is performed by simulation with Matlab. Analyzed for previous control algorithm and adapted for modem control theory, dual servo algorithm is developed by minimum order observer, and stability and priority on controller are secured. Through the simulation and experiments on ultra precision positioning, stability and priority on ultra-precision positioning system with single plane X-Y stage and control algorithm are secured by using Matlab with Simulink and ControlDesk made in dSPACE

전수면박탈이 정상인의 생리기능과 인지기능에 미치는 영향

정종현,송후림,신윤경,한진희,이성필,홍승철 大韓神經精神醫學會 2007 신경정신의학 Vol.46 No.6

Objectives : Purpose of this study was to investigate physiological and neurocognitive effects of total sleep deprivation by using laboratory blood tests and the computerized neurocognitive function test in healthy subjects. Methods : Sixteen healthy volunteers participated in this study. Subjects were recommended to remain awake for 48 hour sunder continuous surveillance. Lab tests of cortisol, Prolactin, thyroid hormone, growth hormone, and immunoglobulin (IgG, IgA, IgM, IgD, IgE), CBC, BC and the Vienna test were performed before and after 48 hours of total sleep deprivation. Results : Concentration of T3 and T4 significantly increased after deprivation. In the reaction test, distribution reaction time significantly increased, and correct reaction significantly decreased. In the vigilance test, amount of correct reaction Signifi-cantly decreased, and the mean value of correct reaction time was significantly delayed. Level of fasting blood sugar, total protein, albumin, alkaline phosphatase and potassium significantly increased, respectively, except for the level of total bilirubin which was decreased. After total sleep deprivation, WBC counts significantly increased. Regarding immunoglobulin level, IgG,IgA and Ag M concentrations appeared to decrease, but the results were not statistically significant. Conclusion : The effect of total sleep deprivation on physiological function was significant in the level of thyroid hormone. Although statistically not significant, the results of growth hormone and the immune system showed a trend in relations to the effect oftotal sleep deprivation. Results of blood chemistry suggest that sleep dephvation may influence metabolism Of hepato-biliary system. Cognitive impairment was also seen in reactive and vigilant functions after total sleep deprivation.

서혜부 탈장으로 오인된 inguinal sparganosis 1례

장상훈,한병규,문기혁,송윤섭,박영호 순천향의학연구소 2004 Journal of Soonchunhyang Medical Science Vol.10 No.2

Sparoganosis is a parasitic infestation of human by a lavel form of an animal tapeworm, genus spirometra. ingestion of raw or undercooked flesh of numerous intermediate hosts results in human infection. Sparganum is usually found in the subcutaneous tissues of various parts of the body, but other sites, such as orbit, brain, and the abdominal viscera, have been recorded. we experienced a case of sparganosis it the spermatic cord.

고립성 폐 결절로 나타난 경화성 혈관종의 폐엽 절제술에 의한 치험 1예 : A case report

황은구,이송암,황재준,김상윤,권혁중,김요한 건국대학교 의과학연구소 2004 건국의과학학술지 Vol.13 No.-

Patient was sixty-eight years old female. She was transferred to our department to resect the solitary pulmonary nodule on right lower lobe. Intraoperative frozen-section revealed bronchioloalveolar carcinoma. So, we performed right lower lobectomy and mediastinal lymph node dissection. Permanent pathologic diagnosis of this patient was sclerosing hemangioma. We report experience of treatment of sclerosing hemagioma presenting solitary pulmonary nodule by lobectomy with the review of literatures.

DC Servo Motor를 이용한 초정밀 위치결정기구의 컴퓨터 시뮬레이션 및 제어성능 평가

박기형,김재열,윤성운,이규태,곽이구,송인석,한재호 韓國工作機械學會 2000 한국생산제조학회지 Vol.9 No.6

Recently, High accuracy and precision arc required in various industrial field especially, semiconductor manufacturing apparatus, Ulna precision positioning apparatus, Information field and so on. Positioning technology is a very important one among them. As such technology has been rapidly developed, this field needs the positioning accuracy as high as submicron. It is expected that the accuracy of 10nm and 1nm is required in precision work and ultra precision work field, respectively by the beginning of 2000s. High speed and low vibration arc also needed. This work deals with the design method and control system of Ultra precision positioning apparatus. Control perfor-mance and stability analysis were performed in advance by modeling and designing the controller with Simulink.

RE-17 : Recurrence of ovarian endometrioma in adolescents after conservative surgical treatment

( Yeon Jean Cho ),( Soo Yoon Lee ),( Mi La Kim ),( Joo Myoung Kim ),( Seok Joo Song ),( Jong Woon Bae ),( Jung Woo Park1,),( Hee Suk Lee ),( Myoung Seok Han1 ) 대한산부인과학회 2014 대한산부인과학회 학술대회 Vol.100 No.-

목적: To evaluate the cumulative recurrence rate of endometriomas after a laparoscopic endometriotic cyst enucleation in adolescents and to find the factors associated with recurrence. 방법: A multicenter retrospective cohort study was performed at 3 gynecologic surgery centers between January 2000 and December 2010. Patients surgically treated by laparoscopic enucleation of endometriotic cysts younger than 20 years old were selected. We excluded patients who had reproductive tract anomalies. Endometrioma recurrence was considered when transvaginal or transrectal sonography indicated a cystic mass with a diameter of ≥ 20 mm. 결과: In total, 105 patients were followed up for 47.3 ± 44.3 months (range, 3 - 161 months). Seventeen patients (16.2 %) experienced recurrence after the first-line surgery and 8 patients (7.6 %) underwent a second surgery. The median time to recurrence was 51.1 ± 9.1 months (SEM) (range, 8 - 111 months). The cumulative recurrence rates of endometrioma per patient at 24, 36, 60 and 96 months after the first-line surgery were 6.4 %, 10 %, 19.9 % and 30.9 %, respectively. Surgical characteristics such as the diameter of the cyst, rAFS stage, unilateral or bilateral involvement, co-existence of deep endometriosis were not associated with the recurrence in this age group. 결론: The short-term recurrence rate in adolescent after the first-line surgery is relatively low but is appears to be higher according to the follow- up duration. Long-term and strict follow up is needed who have undergone surgical treatment for endometriosis in adolescent period.