• 한국지반공학회:학술대회논문집
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• 한국지반공학회 2009년도 세계 도시지반공학 심포지엄
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• pp.899-904
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• 2009

This paper presents the analysis result of load-transfer mechanism and pile movements associated with the development of frictional resistance to understand the engineering characteristics of micropile behavior. An field load tests were performed for two different types of micropiles and they are (i) thread bar reinforcement with D=50mm and (ii) hollow steel pipe reinforcement with $D_{out}$=82.5mm and $D_{in}$=60.5mm and wrapped with woven geotextile for post-grouting. The load test results indicated that micropiling with pressured grouting provided better load-transfer characteristics than micropiling with gravity grouting under both compressive and tensile loading conditions in that unit skin frictional resistance is well distributed along installation depth. The unit weight and unconfined compressive strength of cured grout were obtained for each piling method. The strength and unit weight of micropile with pressured grouting was higher than those with gravity grouting. The fact that load bearing quality with pressured grouting is better than that of gravity grouting could be attributed to the dense mutual adhesion between surrounding ground and pile due to pressurized grouting method and better grout quality.

• 대한간호학회지
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• 제26권1호
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• pp.194-222
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• 1996

Various accidents and injuries are currently occurring in Korea at increasingly high rates. Good quality emergency care service is urgently needed to cope with these various forms of accidents and injuries. In order to develop a sound emergency care system, there need to be a plan to educate and train professionals specifically in emergency care. One solution for the on going problem would be to educate and train emergency clinical nurse specialists. This study on a strategy for curriculum development for emergency clinical nurse specialist was based on the following five content areas, developed from literature related to the curriculum of emergency nursing and emergency care situation : 1. Nurses working in the emergency rooms of three university hospitals were analyzed for six days to identify categories of nursing activities. 2. Two hundreds and eleven nurses working in the emergency rooms of 12 university hospitals were surveyed to identify needs for educational content that should be included in a curriculum for the clinical nurse specialist. 3. Examination of the environment in which emergency management was provided. 4. Identification of characteristics of patients in the emergency room. 5. The role of emergency clinical nurse specialist was identified through literature, recent data, and research materials. The following curriculum was formulated using the above mentioned process. 1. The philosophy of education for emergency clinical nurse specialist was established through a realistic philosophical framework. In this frame, client, environment, health, nursing, and learning have been defined. 2. The purpose of education is framed on individual development, social structure, nursing process and responsibility along with the role and function of the emergency clinical nurse specialist. 3. The central theme was based on human, environment, health and nursing. 4. The elements of structure in the curriculum content were divided to include two major threads, I, e., vertical and horizontal : The vertical thread to consist of the client, life cycle, education, research, leadership and consultation, and the horizontal thread to consist of level of nursing (prevention to rehabilitation), and health to illness based on the health care system developed by Betty Neuman system model. 5. Behavioral objectives for education were structured according to the emergency clinical nurse specialist role and function as a master degree prepared in various emergency settings. 6. The content of the curriculum consisted of three core courses(9 credits), five major courses(15 credits), six elective courses(12 credits) and six prerequisite courses (12 credits). Thus 48 credits are required. Recommendations : 1. To promote tile quality of the emergency care system, the number of emergency professionals, has to be expanded. Further the role and function of the emergency clinical nurse specialist needs to be specified in both the medical law and the Nursing Practice Act. 2. In order to upgrade the qualification of emergency clinical nurse specialists, the course should be given as part of the graduate Program. 3. Certification should be issued through the Korean Nurses Association.

• 방송공학회논문지
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• 제19권2호
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• pp.140-147
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• 2014

본 논문에서는 결합형 양방향 필터를 이용하여 깊이 영상을 실시간으로 보정하는 방법을 제안한다. 제안한 방법은 Kinect 깊이 카메라로부터 얻은 깊이 영상의 화질을 실시간으로 향상시키기 위해 GPU 내의 상수 메모리와 2차원 영상 처리에 적합한 텍스쳐 메모리를 사용한다. 또한, 단일 화소에 대한 결합형 양방향 필터 연산을 각 GPU 쓰레드(thread)에 할당한 다음 병렬로 처리하여 계산량을 현저히 감소시킨다. 그리고 깊이 영상의 품질을 더욱 높이기 위해 CUDA를 이용해 구현한 결합형 양방향 필터를 계층형 구조로 반복적으로 수행하여 폐색 영역이 채워진 깊이 영상을 얻을 수 있다. 실험 결과를 통해, 제안한 실시간 깊이 영상 보정 방법이 깊이 영상의 주관적 화질을 향상시키고, 초당 55 화면의 속도로 동작하는 것을 확인했다.

• 정보처리학회논문지C
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• 제14C권6호
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• pp.525-536
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• 2007

차세대 네트워크의 성공적인 추진을 위하여 트래픽 엔지니어링이 보장되는 중앙 집중형 제어 및 관리 기술이 네트워크 제어 플랫폼인 NCP(Network Control Platform)와 서비스 품질을 보장하는 스위치인 QSS(Quality of Service Switch)로 실현되고 있다. 본 논문에서는 NCP와 QSS 사이의 SNMP 인터페이스에서 고속의 연결 관리를 위하여 병렬형 기법과 쓰레드 및 객체 풀을 도입하였다. 연결 관리의 테스트-베드를 구축하여 본 논문에서 도입한 고속화 방안을 실험실 환경에서 확인하였으며, 연결 설정의 지연과 완료율을 측정하여 성능을 비교 및 분석하였다. NCP와 QSS 사이의 SNMP 인터페이스에서 연결 관리의 고속화를 위하여 병렬형 방식과 객체 풀의 사용이 중요한 성능 파라미터임을 확인하였다.

• 한국인쇄학회지
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• 제31권1호
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• pp.1-14
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• 2013

Screen printing is a printing method with flexible plate surface characteristics. In addition, since the appearance of electronics industry the screen printing has been demanding high quality and definition. However, Screen printing is a method for taking ink through mesh opening because screen mesh tends to restrict quality of screen printing. In particular, the biggest problem compared with other printing type is halftone reproduction characteristics. Halftone reproduction characteristics for screen printing depend on screen mesh and opening. Dot losses or dot gains are observed through various types of screen mesh because thread of screen mesh interfere with the movement of the ink. Excessive dot losses or gains can affect the tonal range. Furthermore, this problem can result in other problem such as bad contrast and gray balance. Therefore, it is an important factor to use proper screen mesh for halftone screen printing. However, domestic screen printing industry relies on worker's experience in field rather than depending on objective data although standardized specifications and optimal printing conditions are required for screen printing. For this reason, it is important to stipulate standard condition for domestic screen printing industry. Therefore, it was examined to find tonal range by mesh opening in halftone prints process of screen printing used domestic paper and ink in this study. In addition, TVI(Tone Value Increase) characteristic was observed by comparing to the manuscripts and prints of the dot area ratio. Furthermore, contrast value and gray balance were confirmed for each condition of the printout. Conditions for the proper selection of screen mesh screen for the quality of the prints were also examined, compared with the international standard of screen printing, ISO 12647-5.

• 대한치과의사협회지
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• 제53권2호
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• pp.96-102
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• 2015

There is a need to comprehend dental accidents accurately, and construct patient-safety-system in order to prevent consistently increasing dental accident or dispute. This study is aimed to provide basic data for an efficient counterplain by looking through and classifying already occurred dental accidents from an angle of patient safety. Recently, the number of dispute on dental implant was the highest according to rapid growth of dental implant. As a result of classifying dental accidents by International Classification for Patient Safety (ICPS), it is confirmed that cause of accident is different by each type of dental treatment. It is expected to help preventing and managing dental disputes properly by studying actual state of dental disputes in perspective of patient safety. Effort to reduce dental accidents and activity to pursue patient safety have thread in connection. I believe that financial profits of dental clinic and improvement of quality in dental treatment can be achieved through these efforts.

• 한국정밀공학회지
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• 제33권6호
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• pp.491-497
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• 2016

This study aims to develop a vision inspection system for screw threads. To inspect external defects in screw threads, the vision inspection system was developed using front light illumination from which bright images can be obtained. The front light system, however, requires multiple side images for inspection of the entire thread surface, which can be performed by omnidirectional optics. In this study, an omnidirectional optical system was designed to obtain annular images of screw threads using an image sensor and two reflection mirrors; one large concave mirror and one small convex mirror. Optical simulations using backward and forward ray tracing were performed to determine the dimensional parameters of the proposed optical system, so that an annular image of the screw threads could be obtained with high quality and resolution. Microscale surface defects on the screw threads could be successfully detected using the developed annular inspection system.

• The Journal of Asian Finance, Economics and Business
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• 제7권1호
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• pp.313-320
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• 2020

This study aims to analyze the household economic behavior of salt farmers participants in Salt Business Empowerment Program (Pugar) including of salt production, work flow, household revenue, the behavior of consumption of food and non-food items and the welfare level. This research followed a survey method by engaging 32 household farmers as participants. The findings revealed that the empowerment program was carried out through the technical assistance of salting production and the assistance of equipment and technology from Thread of Screw Filter and geoisolators to improve the quality of salt. The problems come when the marketing of salt is still limited to the collectors of salt which led to the price of salt level, manufacturers have not remained stable. Household revenue sources for some salt farmers also come from non-salt pond business activities. Farmer household revenue can be used to meet staple food consumption and non-food staple consumption. Based on the indicators of family welfare, households participating in the empowerment program were group into the category of prosperous families. In order to stabilize the price of salt at the producer level, government intervention in the people's salt trading system is needed.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제11권3호
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• pp.1684-1699
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• 2017

The deblocking filter (DF) reduces blocking artifacts in encoded video sequences, and thereby significantly improves the subjective and objective quality of videos. Statistics show that the DF accounts for 5-18% of the total decoding time in high-efficiency video coding. Therefore, speeding up the DF will improve codec performance, especially for the decoder. In view of the rapid development of multicore technology, we propose a parallel DF scheme based on a modified order of accessing the coding tree units (CTUs) by analyzing the data dependencies between adjacent CTUs. This enables the DF to run in parallel, providing accelerated performance and more flexibility in the degree of parallelism, as well as finer parallel granularity. We additionally solve the problems of variable privatization and thread synchronization in the parallelization of the DF. Finally, the DF module is parallelized based on the HM16.1 reference software using OpenMP technology. The acceleration performance is experimentally tested under various numbers of cores, and the results show that the proposed scheme is very effective at speeding up the DF.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2003년도 춘계학술대회 논문집
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• pp.1861-1864
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• 2003

The objective of this study is to suggest the form rolling technology to produce high precision worm. Rack dies and roll dies are usually used to roll parts with worm teeth. The form roiling processes of worm shaft used as automotive part using the rack dies of counter flow type and the roll dies are considered and simulated by the commercial finite element code, DEFORM-3D. It is also important to determine the initial blank diameter in form rolling because it affects the quality of thread. The calculation method of the initial blank diameter in form rolling is suggested and it is verified by FE-simulation. The experiments using rack dies and roll dies are performed under the same conditions as those of simulation. The results of simulation and experiment in this study show that the from rolling process of worm shaft using the rack dies is decidedly superior to that using rolling dies from the aspect of the surface roughness and the profile of worm.