환경이 스포츠에 미치는 영향

송내영 서울여자대학교 1984 서울여자대학논문집 Vol.- No.13

This is a study of the environmental influences on sports and the followings are some of the main ideas and results discussed and gained : 1. Environment must not be destroyed not only for man's survival but also for the creation and inheritance of sports culture. 2. Rapid growth in science has made liferich and convenient, but from the negative point of view, it also brought environmental pollution which not only threatens life but obstructs the development of sports culture. 3. Sports culture is created inclose relationship with man's way of life and developed through the incessant process of reconciling human desire and environment. 4. More important than good facilities and scientific equipment is the fact that everyone should be able to use and handle them with ease and that they should be within reach of as many people as possible. 5. Public health should be considered first and commercial purpose should be positively rejected in expanding athletic facilies and every possible element that may obstruct sports activities must be removed by policies at government level. 6. As traditional sport is developed by cultural phenomena, it can safely be said that sports culture is cultural expression of the way of life of a people, the traits of a local province or of a nation. 7. Active participation in athletic activities contribute to the formation of a rounded man, solidarity and harmony among people as well as to the development of a healthy mind and well-balanced body.

Scandinavia 체육사 연구-Sweden체육 중심으로-

송내영 서울여자대학교 1987 서울여자대학논문집 Vol.16 No.-

현대인과 스포츠 효용에 관한 연구

송내영 서울여자대학교 1983 서울여자대학논문집 Vol.- No.12

The main purpose of this study is to find what influence sports have on modern man and what their effects are. The study has led to the following conclusions. 1. Sports, injecting a vitality into one's life as his enjoyable pastime, is not labor but a self-imposed physical activity. Especially in an athletic sports its primary goal is to master the techniques. Therefore, the players or the contestants would rather try to act to their best of their ability than adhere to the final consequence. 2. A man with more adaptability to the environment than the other living things have long maintained his life. Through his whole history he developed the cleverness for protecting himself from external dangers and built up physical strength by continuous physical activity. 3. nowadays housewives suffering from the corpulence, however, are sharply increasing as the technological development gradually deprives them of the opportunity of physical exercise. That this phenomenon mainly resulted from their own indifference to their lack of physical activity displays they hurt themselves and their children's health as well. 4. It is impossible to completely prevent the aging process for it is the natural physiological function of the organism. But it is possible to delay the process through the improvement of living circumstances, appropriate nutrition and mo-derate exercise. Yet one thing for sureit is essential that paying chose a tention to whether the exercise is proper or not. Otherwise, a reverse effect due to excessive exercise may be brought. 5. Prevention is the best way to avoid suffering from the chronic diseases, such as hypertension, diabetes, etc. And sports is the one of the best effective preventive measures because it may preserve man's physical function by promoting metabolism. 6. In short, it seems likely that sports is of great use for human to live a pleasant life with health body and sound mind by hardening them.

비행청소년 환경과 체육을 통한 정서함양

송내영 서울여자대학교 1982 서울여자대학논문집 Vol.- No.11

This study concerns juvenile delinquent's home environments, patterns of delinquencies, and sentiment cultivation through physical education as a corrective measure. A survey was made of 866 juvenile delinquents helt at Inchon Reformatory, located in Hagik-dong, Inchon City. The following are the findings and the conclusion. 1. 70.9% of the subjects, parents were living. The subjects were roughly from the middle income breacket. 2. 64.3% of the subjects' parents were engaged in commercial business and farming. 3. 60% had the experience of running away from home. 4. In terms of their motives, 44.8% of the delinquencies were accidental. Approximately 50% of the delinquencies were committed in metropolitan areas. The one-person delinquencies accounted for 52.2% of the total delinquencies, the two-person delinquencies 20.9%. and the delinquencies committed by three or more persons 26.9%. 5. Theft accounted for 30.4% of the total delinquencies, violence 25.4%, robbery with violence 22.4%, and rape 11.3%. 6. 46.4% of the delinquents were arrested at the scene of the crime, 36.5% within one month, 12.6% within six months, 3.3% within one year, and merely 1.2% after a longer period. Asked where they wanted to go after committing their delinquencies, 42.6% said they wanted to return home and 21.0% said they wanted to move to the entertainment area of a city. 7. Through physical education activities, 49.5% felt that they had developed a law-abiding spirit and 30.4% felt that they had developed a cooperative spirit. 8. 40.3% directiy attributed cultivation of their new sentiments to the development of skills and interest in physical education activities, and 34.8% to the acquisition of the habits of observing requlations and of obeying umpires' or referees' calls. 9. 51.3 said they could feel at peace, forgetting every trouble and affliction, and 28.9% said they could feel confident while they were taking part in physical education activities. 10. To conclude, physical education can definitely contribute to the promotion of a law-abiding spirit, a cooperative spirit, perseverance, to the refinement of violent emotions, and to the cultivation of sentiments. Group sports rather than individual sports were found to be more desirable.

범위 기반 로그 구조 병합 트리를 활용한 키-값 저장소의 최적화 방법

송내영,염헌영,한혁 한국정보과학회 2019 정보과학회 컴퓨팅의 실제 논문지 Vol.25 No.3

Log-Structured Merge (LSM) Tree is designed to efficiently support the frequent write or update operations using log structures. This LSM tree enables high write throughputs by storing data primarily in a memory buffer. It also defers merging complicated operations such as sorting or invalidating stale data. However, deferring merging operations results in write amplification which ultimately affects the system performance and storage devices. In this paper, we propose a Ranged Log-Structured Merge (RLSM) tree to reduce the write amplification and conducts the merge procedure using append operation only because it manages the data in hashed order. The file ranges do not overlap each other, hence, read amplification can also be reduced. We evaluated tour prototype key-value stores using YCSB benchmark which can reduce the write amplification upto 3x. 로그 구조 병합 트리는 로그 구조를 사용하는 데이터 구조로써 키-밸류 저장소에서 빈번히 발생하는 삽입/수정을 효율적으로 수행하기 위해 만들어진 자료구조이다. 이 트리는 데이터를 우선 로그 형식으로 저장하고, 로그 상의 데이터 정렬, 수정 작업의 처리 등의 병합을 미룸으로써 높은 쓰기 처리량을 가능케 한다. 하지만 후에 발생하는 병합 작업은 쓰기 증폭을 발생시키며 결국엔 시스템 성능과 저장장치의 수명에 악영향을 끼친다. 본 논문에서는 기존 로그 구조 병합 트리에서의 단점인 쓰기 증폭을 해결하기 위해서 범위 기반 로그 구조 병합 트리를 제안한다. 범위 기반 로그 구조 병합 트리에서는 데이터들을 임의 순서로 관리함으로써 이어 쓰기(append) 방식만을 사용해서 병합 할 수 있게 된다. 이 때 각 파일들은 서로 겹치지 않는 범위를 가짐으로써 읽기 증폭이 일어날 수 있는 부작용을 막는다. 해당 기법에 대해서 YCSB 벤치마크로 성능을 검증하였고 결과로써 쓰기 증폭이 3배 줄었다.

한국 체육사 연구

송내영 서울여자대학교 1981 서울여자대학논문집 Vol.- No.10

효율적인 I/O 제어를 위한 Solid State Drive 기반 I/O 스케줄러

송내영(Nae Young Song),염헌영(Heon Y. Yeom) 한국정보과학회 2015 한국정보과학회 학술발표논문집 Vol.2015 No.6

효율적인 키-밸류 스토어를 위한 범위 기반 로그 구조 병합 트리

송내영(Nae Young Song),염헌영(Heon Young Yeom) 한국정보과학회 2018 한국정보과학회 학술발표논문집 Vol.2018 No.6

대용량 파일 시스템에서의 덴트리 캐시 찾기 기법의 최적화

송내영(Nae Young Song),염헌영(Heon Young Yeom) 한국정보과학회 2017 한국정보과학회 학술발표논문집 Vol.2017 No.12

스토리지 내 프로세싱 방식을 사용한 그래프 프로세싱의 최적화 방법

송내영(Nae Young Song),한혁(Hyuck Han),염헌영(Heon Young Yeom) 한국정보과학회 2017 정보과학회 컴퓨팅의 실제 논문지 Vol.23 No.8

최근 들어 플래시 메모리 Solid State Driver(SSD)와 같은 반도체 기반 저장장치가 고성능으로 발전하면서 저장장치 내부 컨트롤러의 CPU와 메모리 같은 자원을 응용의 요구에 맞추어 최적으로 활용해보고자 하는 움직임이 있었다. 이러한 개념을 스토리지 내 프로세싱 방식(In-Storage Processing, ISP)이라고 한다. ISP의 기능이 탑재된 저장장치에서는 호스트에서 수행하던 연산의 일부를 나누어 처리할 수 있으므로 호스트의 부하가 줄어들고 저장장치 내에서 데이터가 가공되어 처리되기 때문에 호스트까지의 데이터 전달 시간이 줄어든다. 본 논문에서는 이러한 ISP 기능을 활용하여 그래프 질의 처리를 최적화하기 위한 방식을 제안하고, 제안된 최적화 그래프 처리 방식이 graph500 벤치마크의 성능을 최대 20%까지 향상 시켰음을 보여준다. In recent years, semiconductor-based storage devices such as flash memory (SSDs) have been developed to high performance. In addition, a trend has been observed of optimally utilizing resources such as the central processing unit (CPU) and memory of the internal controller in the storage device according to the needs of the application. This concept is called In-Storage Processing (ISP). In a storage device equipped with the ISP function, it is possible to process part of the operation executed on the host system, thus reducing the load on the host. Moreover, since the data is processed in the storage device, the data transferred to the host are reduced. In this paper, we propose a method to optimize graph query processing by utilizing these ISP functions, and show that the optimized graph processing method improves the performance of the graph 500 benchmark by up to 20%.