• 한국건설관리학회논문집
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• 제4권3호
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• pp.67-75
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• 2003

국내 건설산업에서 공사비가 50억원 이하인 소규모 프로젝트가 차지하는 비중은 전체 건설 프로젝트의 90%에 달하고 있다. 하지만 소규모 프로젝트에 대한 인식의 부족과 체계적 인 관리의 부재로 인해 프로젝트의 수행에 있어 많은 손실과 관리의 어려움을 느끼고 있는 실정이다. 따라서 본 연구에서는 설문조사를 실시하여 국내 소규모 프로젝트의 관리실태를 파악하였다. 소규모 프로젝트 관리방식에 관한 인식, 단계별 관리실태 및 중요도, 프로젝트 성공요소와 관리항목간의 상관관계를 분석하였다. 또한 소규모 프로젝트를 수행하는 계약주체들이 효과적이고 체계적으로 관리할 수 있는 개념적 관리방안을 제시하였다.

• 한국안전학회지
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• 제23권5호
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• pp.30-34
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• 2008

To evaluate the mechanical properties of in-service materials, tensile properties measurement using small-scaled specimen has been carried out. Tensile testing specimens with various dimensions, including standard and sub-size specimen specified in ASTM and ISO and small-scaled specimen, were prepared. Tensile strain in small-scaled specimen was measured using micro-ESPI system set up in this study. This system was used in the specimen with the parallel length of 2 mm and in subsequently measuring the strain under tensile loading. From each type of tensile specimen, stress-strain curves were determined. The dimension effect of the tensile properties was investigated comparing the tensile results obtained from standard specimens and small-scaled specimens. It was shown that the tensile strength for the small-scaled specimen is lower by 15% than those for the standard specimen.

• 한국산학기술학회논문지
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• 제12권4호
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• pp.1547-1551
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• 2011

기화기 방식의 엔진을 EFI 소형 엔진으로 설계 변경하여 제작하였다. 최적의 작동 조건을 선정하기위하여 엔진의 성능개발을 수행하였다. EFI 엔진의 최대 출력 및 최대 토크는 12.56Ps 및 25.4Nm로 기화기 엔진과 동등한 수준이다. EFI 소형엔진의 연료 소모율은 기화기 방식 엔진 대비 평균 17% 향상되었다. KG2-6모드 실험을 통한 HC+NOx는 7.46g/kWh로 측정되어, EPA Phase 3 규제를 만족하였다. THC는 기화기식 엔진 대비 평균 41% 저감되었으나, 열효율의 상승으로 인하여 NOx는 평균 3.5배 증가하였다.

• 한국소음진동공학회:학술대회논문집
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• 한국소음진동공학회 2004년도 추계학술대회논문집
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• pp.227-231
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• 2004

Technological advance in information technology has sparked the necessity of small form factor (SFF) optical disk for mobile devices. Small form factor optical disk is highly anticipated to be a next generation storage device because it can be used for a cost-effective way compared with solid state memory. For the application to the 5 mm height small-form-factor optical disk drive, we have presented an optical flying head and swing arm actuator. In this study, we propose a small 1-axis actuator for compensating ficus error and SA due to the variation of cover-layer thickness in the cover-layered small optical disk. The main design issues of the 1-axis actuator are the realization of compact structure and the new support structure of the actuator: Finally, the compensating principle and performance of the 1-axis actuator will be explained.

• International journal of advanced smart convergence
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• 제10권4호
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• pp.256-262
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• 2021

In order for small electric vehicles to drive on hilly roads in Korea, methods to improve the climbing ability and power performance of vehicles should be taken. In order to improve the power performance of small electric vehicles, the performance of motors mounted on electric vehicles should be improved. However, if the performance of the motor is improved to improve the power performance of the electric vehicle, it is possible to lower the price competitiveness accordingly. In addition, the power consumption of the battery is rapidly increased to drive the high-performance motor, so in order to introduce the small electric vehicle into the domestic market, various problems must be overcome. In order to commercialize small electric vehicles that do not emit harmful exhaust gases to the human body in the hilly domestic terrain, it is effective to introduce a separate continuously variable transmission system that can improve the climbing ability and power transmission ability. In this study, we propose a proprietary model of continuously variable transmissions that can be applied to small electric vehicles. The proposed continuously variable transmission is equipped with a spring in the driving pulley and the driven pulley, and has the advantage of performing a shift that increases torque in a situation where the vehicle needs to increase torque when driving on a hill. In addition, the basic design for commercialization of the proposed continuously variable transmission was carried out, and the prototype manufactured and attached to the body of a small electric vehicle.

• 대한영상의학회지
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• 제84권1호
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• pp.110-126
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• 2023

영상의학과 의사가 컴퓨터단층촬영 영상을 볼 때, 소장에 생긴 악성 병변은 그 크기가 작아 정상 소장과 유사한 조영증강을 보이거나 비특이적인 조영증강으로 인해 정상 소장으로 오인될 수 있기 때문에 놓치기 쉽다. 또한, 소장의 악성 병변은 자궁, 직장, 대망과 같은 다른 장기에서 발생한 종괴로 오인될 수 있다. 이 임상화보에서, 저자들은 소장에 생긴 다양한 악성 종양과 악성 종양으로 오인할 수 있는 소장 병변의 전형적, 비전형적 CT 소견을 임상 양상과 함께 보여주고자 한다.

• Journal of Gastric Cancer
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• 제4권3호
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• pp.186-191
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• 2004

Primary small-cell carcinomas of the stomach are rare and aggressive malignancies with poor survival rates. Preoperative diagnosis is difficult and a standard treatment is not yet established. We have recently experienced two cases of a primary small-cell carcinoma of the stomach. The first case was a 65-year-old man with epigastric soreness. Endoscopic biopsy showed an adenocarcinoma. He underwent a radical subtotal gastrectomy with D2 lymph-node dissection. Pathology revealed a collision tumor of a smallcell carcinoma and an adenocarcinoma with submucosal invasion and with metastasis in 20 out of 48 lymph nodes (T1N3M0). The second case was a 64-year-old man with epigastric soreness. Endoscopic biopsy revealed a small-cell carcinoma. There was no evidence of a primary tumor in the lung. A radical subtotal gastrectomy with D2 lymph-node dissection was performed. Pathology showed a pure smallcell carcinoma with proper muscle invasion and with metastasis in 1 out of 36 lymph nodes (T2aN1M0).

• Healthcare Informatics Research
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• 제24권4호
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• pp.327-334
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• 2018

Objectives: The objective of this study was to investigate the relationship between the level of Electronic Medical Record (EMR) system adoption and healthcare information technology (IT) infrastructure. Methods: Both survey and various healthcare administrative datasets in Korea were used. The survey was conducted during the period from June 13 to September 25, 2017. The chief information officers of hospitals were respondents. Among them, 257 general hospitals and 273 small hospitals were analyzed. A logistic regression analysis was conducted using the SAS program. Results: The odds of having full EMR systems in general hospitals statistically significantly increased as the number of IT department staff members increased (odds ratio [OR] = 1.058, confidence interval [CI], 1.003-1.115; p = 0.038). The odds of having full EMR systems was significantly higher for small hospitals that had an IT department than those of small hospitals with no IT department (OR = 1.325; CI, 1.150-1.525; p < 0.001). Full EMR system adoption had a positive relationship with IT infrastructure in both general hospitals and small hospitals, which was statistically significant in small hospitals. The odds of having full EMR systems for small hospitals increased as IT infrastructure increased after controlling the covariates (OR = 1.527; CI, 1.317-4.135; p = 0.004). Conclusions: This study verified that full EMR adoption was closely associated with IT infrastructure, such as organizational structure, human resources, and various IT subsystems. This finding suggests that political support related to these areas is indeed necessary for the fast dispersion of EMR systems into the healthcare industry.

• Biotechnology and Bioprocess Engineering:BBE
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• 제5권2호
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• pp.118-122
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• 2000

A comlementary call line CR2 is curretly used to propagte the Disabled Infectious Single Cycle Herpes Simplex Virus Typee2 (DISC HSV-2) on a small Iaboratory scale upto 15 L. These cultures are initiated by passaging the cells from roller bottle cultures. Whilst this is suitable for the laboratory scale it is totally impractical for use in seeding an industrial manufacturing scaled version of the culture. It is paramount to have a robust system for passaging cells from a small microcarrierier culture system to a larger one by a serial subculturing regime. Here we report on the successes we have had in our laboratory in scaling up out production system for the DISC HSV-2 from small 1-L cultures to a 50-L vessel with the maintenance of the viral productivity. Ease of use, reproducibility and the need to minimise overall production time were factors which were taken into consideration whils developing our procedures. We were aware of the need to keep a production train simple and as short as possible as this was the amall scale study for an envisaged manufacturing process.

• 한국전문물리치료학회지
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• 제9권1호
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• pp.97-110
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• 2002

The purposes of this study were to investigate the patient satisfaction with physical therapy services and find the related factors to patient satisfaction. In this study, three hospitals were selected at large, middle, small city. Ninety subjects (53 males, 37 females) who had received physical therapy service were participated in this survey. Survey data were collected by a written questionnaire. The patient satisfaction scale had a good reliability (Cronbachs alpha=.9134). The collected data were analyzed by t-test, ANOVA, and Kruskal-Wallis. The scores of patient satisfaction with physical therapy services at large, middle, and small city were 79.67, 76.23, and 86.33 respectively. The score of patient satisfaction at small city was significantly higher than middle and large city (p<.01). There was no significant difference in patient satisfaction with physical therapy services according to gender, age, education years, occupation, marital status, religion and average monthly income. Further studies are needed to identify which specific factors are related to patient satisfaction with physical services. This information will be useful in improving the patient satisfaction.