• 한국콘텐츠학회논문지
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• 제8권9호
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• pp.27-33
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• 2008

Linux에서 사용되는 Shared Memory는 동일한 메모리 영역에 여러 개의 프로세스가 접근할 수 있도록 해 주는 기술이다. 본 논문은 Linux 운영체제에서 지원해 주는 System V의 IPC 중 하나인 Shared Memory를 Dual Core 시스템 상에서 동작하도록 구현한다. 본 논문에서는 커널 단계에서 처리되는 SVR(System V Release) 형식의 Shared Memory를 다룬다. 기존의 공유메모리 방식은 단일 처리기를 이용한 방식이다. 본 논문에서는 dual core를 이용하여 공유메모리 처리를 할 수 있는 시스템을 제안한다. 본 논문에서 제안하는 Dual Core 시스템에서 공유 메모리 기능 구현은 기존의 단일 처리기 시스템에서보다 성능을 향상시킬 수 있도록 한다. 공유 메모리를 이용한 프로세스의 동작이 별개의 CPU에서 동작되도록 함으로써 성능 향상을 꾀한다.

• 한국융합학회논문지
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• 제10권5호
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• pp.181-188
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• 2019

ICT기술을 기반으로 공유경제 서비스시스템을 사람들이 손쉽게 사용할 수 있다. 대부분의 공유경제 서비스는 민간기업에서 제공하고 있으며, 공공재에서의 논의는 미진하다. 현재 진행되는 공유경제 서비스를 택배서비스 관점에서 본다면 우버의 시스템이 대안이 될 수 있다. 우체국의 택배서비스는 ICT기술을 이용하지만 공유경제의 서비스와는 차이가 있다. 본 연구는 델파이 분석기법과 AHP방법론을 사용하여, 공유경제 시스템을 도입하는데 있어서 중요요인들을 도출하였다. 그 결과 상위계층에서는 사회경제적 특성이 가장 중요한 것으로 나타났으며, 하위계층에서는 공유경제 플랫폼, 유휴자원의 공유, 스마트폰의 대중화, 전자상거래의 증가가 4가지 중요 요인임을 알 수 있었다. 이 연구를 통해서 공유경제의 본질인 '효율의 극대화'를 위해서 공공재에 공유경제 시스템에 도입의 필요성과 도입 시 중요요인에 대해서 제시하고 있다.

• Journal of Communications and Networks
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• 제10권3호
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• pp.331-337
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• 2008

In this paper, we investigate survivability in wavelength division multiplexing (WDM) mesh networks and propose a new algorithm called improved shared-path protection (ISPP) to completely tolerate the double-link failures. Compared with previous algorithms for protecting double-link failures, i.e., shared-path protection (SPP) and shared-link protection (SLP), the advantage of ISPP is to allow primary paths and backup paths to share the mixed wavelength-links based on the proposed new rules in which some primary wavelength-links can be changed to mixed wavelength-links, which can be shared by primary paths and backup paths. In addition, some mixed wavelength-links also can be shared by different backup paths for saving resources. Simulation results show that ISPP algorithm performs better in resource utilization ratio and blocking probability than conventional SPP and SLP algorithms.

• 대한가정학회지
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• 제33권3호
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• pp.113-126
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• 1995

The purposes of this study were to investigated ; 1) The amount of shared leisure time with spouses. 20 The differences of the mount of shared leisure time according to socio-demographic variables. 3) The relationship between marital satisfaction and the amount of shared leisure time. Data for 291 couples were gather from using structured questionnaire and time diary. The major findings were ; 1) Spouses spent together 2 hours and 8 minutes on the average per day in leisure. Time for active leisure was 1 hour and 36 minutes, while that for passive leisure was 32 minutes. 2) The total shared leisure time were significantly related to husband's age, degree of husband's education, and employment status of wife. The active shared leisure time were related number of children and husband's age. and the passive shared leisure time were related to degree of husband's education, and employment status of wife. 3) The more couples spent together in leisure, the higher their marital satisfaction became.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 2001년도 ICCAS
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• pp.140.3-140
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• 2001

This paper analyzes a blocking that is due to shared resource in multiprocessor system. A proposed analysis for shared resource suggests a scalable and amendable scheduling method about task allocation. An equation of shared resource blocking is proposed by a throughput at common bus and a ratio of throughput during time period, it is included a parameter of tasks scheduling. Using this equation, a new guideline for task allocation of multiprocessor is presented. Finally, in proposed system a model simulations for the proposed blocking model is given by a deterministic ratio of shared resource.

• 한국전자통신학회논문지
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• 제10권5호
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• pp.539-548
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• 2015

본 논문에서는 프로세서별 서로 다른 버스에 서로 다른 운영체제를 갖는 멀티코어 시스템에서 공유 메모리 기능을 구현하고, 임베디드 리눅스 시스템을 통하여 두 프로세서 사이에서 공유 메모리 기능을 실험하였다. 듀얼 버스 구조에서 공유 메모리 구현을 위해 메모리 컨트롤러를 이용하였으며, 리스트 자료구조를 통하여 공유 메모리 세그먼트를 관리한다. AMP 멀티 코어 실험을 위하여 2개의 프로세서 코어에 리눅스 운영체제를 탑재하도록 하였다. 그리고 공유 메모리 테스트를 위하여 구현된 커널 모듈을 이용하여 공유 메모리 생성 및 이용이 가능함을 확인 하였다.

• 산업공학
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• 제13권3호
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• pp.444-454
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• 2000

Due to the improvement of modern information technologies, sharing stock information among the supply chain members is a common practice nowadays. Many companies are planning to adopt the information systems to possess the real-time shared stock information. Thus, it is needed to quantify the value of shared stock information. The purpose of this paper is to evaluate the value of the shared stock information for two-echelon distribution systems. Existing reorder policies can be classified into installation stock policies and echelon stock policies. Since installation stock policies do not utilize the shared stock information, and both classes of policies may show poor performances for distribution systems, we cannot evaluate the value of the shared stock information with the existing policies. Thus, we provide a new type of reorder policy, named order risk policy. We define the order risk using marginal analysis, and prove the optimality. Through computational experiment that compares the order risk policy with the existing policies, it is shown that a significant cost reduction is achieved with the effective utilization of the shared stock information. We also show the effect of the system characteristics on the value of the shared stock information.

• 한국실내디자인학회논문집
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• 제27권1호
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• pp.3-11
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• 2018

The number of shared offices has increased and changed within the flow of the era into various forms in recent days. Co-working spaces and related shared space businesses are growing fast, keeping pace with the trend recently. It is confirmed that the need of spaces grew 180% since 2015 to 2017. Most of the shared offices in Seoul are placed in Gangnam circle, it is verified that shared office is providing work, space, and community by visiting cases of foreign companies, domestic companies, local companies. Meanwhile, shared space can be categorized into serviced office, co-working space, virtual office, and daily office. It is to consider various target levels by leasing service or the difference of costs. It is divided into forms of dispersion, circulation, and concentration and is planned to increase the utilization of communities' traffic according to the allocation of shared office. The business is conducted network-centered. During the process of communication, members can get chances to exchange and build communities. They are making business ecosystem which they can coexist and grow together. Shared offices have a view of a solution to empty rooms and will last for a while, and it is expected that co-working system be settled as office space and giving people sense of belonging on their workspace.

• 가정과삶의질연구
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• 제16권2호
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• pp.123-136
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• 1998

The purpose of this study is to define the structure and characteristics of the time shared with parents and children. The three specific questions are asked. (1) How much time do parents and children share with? (2) What kind of effects do the demographic factors and the psychosocial factors have on the time shared with parents and children? (3) And how can the families be classified into different types according to the time shared with parents and children? For the empirically proved answers the 161 full0time housewife couples and the 174 wife employed couples in Seoul and Kyoungki-do are surveyed with a self reported time diary and a structured questionare. Such statistical methods as frequency percentage mean tobit analysis cluster analysis oneway ANOVA and Ducan's multiple range test are used to analize the data Main findings from this empirical study can be summarised like this. First the two largest parts of the time shared with parents and children are eating and TV atching. Second the eldest child's age degree of wife's education the number of children wife's employment status family income degree of the family cohesion the couple's attitude toward marriage and role salience are significantly related to the various kind of time shared with parents and children. Third the families are classified by the time shared with parents and children into three types. type 1: the family shared least time with type 2: the family shared passive leisure with type 3: the family shared active leisure with. Type 3 has very distinctive characteristics. This type of family's eldest child is youger than any other family's and this type of family has a full time housewife. And their family cohesion is higher and their couple's relationship is oriented more companionship.

• 디지털융복합연구
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• 제14권12호
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• pp.303-311
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• 2016

본 연구는 간호학생의 팀기반학습(TBL)에서 공유리더십이 팀성과 및 팀몰입에 미치는 영향과 이들의 관계에서 팀신뢰의 매개효과를 확인하기 위하여 시도되었다. 연구대상은 2016년 1학기 6주 동안 팀기반학습에 참여한 99명의 간호대학생이었으며, 2016년 6월 자기기입식 설문지를 통해 자료를 수집하였다. 연구 결과, 공유리더십과 팀성과, 팀몰입, 팀신뢰 간 모두 유의한 상관관계가 있는 것으로 나타났으며, 공유리더십은 팀성과와 팀몰입에 긍정적 영향을 주는 것으로 나타났다. 또 팀신뢰는 공유리더십과 팀몰입과의 관계를 부분 매개하고 있는 것으로 나타났다. 본 연구를 통하여 팀기반학습에서 공유리더십은 팀성과와 팀몰입을 향상시키는데 매우 중요한 요인이며, 팀신뢰를 통하여 팀몰입에 미치는 영향이 달라질 수 있다는 것을 알 수 있었다. 따라서 대학 내 팀기반학습 시 팀효과성을 높이기 위해서는 공유리더십과 팀신뢰를 높여야할 필요가 있다.