• Journal of Information Processing Systems
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• 제13권4호
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• pp.668-676
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• 2017

Recently, the importance of big data has been emphasized with the development of smartphone, web/SNS. As a result, MapReduce, which can efficiently process big data, is receiving worldwide attention because of its excellent scalability and stability. Since big data has a large amount, fast creation speed, and various properties, it is more efficient to process big data summary information than big data itself. Wavelet histogram, which is a typical data summary information generation technique, can generate optimal data summary information that does not cause loss of information of original data. Therefore, a system applying a wavelet histogram generation technique based on MapReduce has been actively studied. However, existing research has a disadvantage in that the generation speed is slow because the wavelet histogram is generated through one or more MapReduce Jobs. And there is a high possibility that the error of the data restored by the wavelet histogram becomes large. However, since the wavelet histogram generation system based on the MapReduce developed in this paper generates the wavelet histogram through one MapReduce Job, the generation speed can be greatly increased. In addition, since the wavelet histogram is generated by adjusting the error boundary specified by the user, the error of the restored data can be adjusted from the wavelet histogram. Finally, we verified the efficiency of the wavelet histogram generation system developed in this paper through performance evaluation.

• Journal of Information Processing Systems
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• 제10권4호
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• pp.581-588
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• 2014

To facilitate the implementation of a wide variety of context-aware applications based on mobile devices, general-purpose context-aware framework that applications can use by calling is needed. The context-aware framework is a middleware that performs the sensing, reasoning, and retrieving based on the knowledge base. The knowledge base must systematically represent the information required on the behavior of the context-aware framework, such as context information and reasoning information. It must also provide functions for storage and retrieval. To date, previous research on the representation of the context information have been carried out, but studies on the unified representation of the knowledge base has seen little progress. This study defines the knowledge base as the unified context information, and proposes the UniOWL, which can do a good job of representing it. UniOWL is based on OWL and represents the information that is necessary for the operation of the context-aware framework. Therefore, UniOWL greatly facilitates the implementation of the knowledge base on a context-aware framework.

• Journal of Preventive Medicine and Public Health
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• 제33권4호
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• pp.436-448
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• 2000

Objectives : To identify the factors affecting users' satisfaction with the Order Communicating System(OCS) and to highlight the factors important for the successful establishment of OCS. Methods : A Users Satisfaction survey was sent to 4,513 people, consisting of 1,503 doctors, 2,379 nurses, 255 pharmacists and 370 administrative workers in 16 hospitals which had introduced OCS. The response rate was 63.9%. Measurement of users' satisfaction was peformed with the instrument which was used in Doll's study. Some aspects of Doll's instrument were adjusted according to the aims of this study. The classifying sections of this survey included age, job and status classification, computer experience, OCS education, duration of daily OCS use, type of order entering, number of personnel in the Hospital Information System's department, cost of OCS, problem frequency, proportion of work managed by hand, OCS type, and Hospital establishment type. Results : There was a positive correlation between satisfaction level and managerial status throughout all job classifications. Irrespective of the importance of OCS education as a factor relating to users' satisfaction, the additional work load caused by OCS lowered users' satisfaction. Different factors affected users' satisfaction according to job and status classification. The composition of factors affecting the pharmacist and administrative worker satisfaction levels was simpler than that of the doctor and nurse levels. There were no statistically significant differences between the actual computer experience duration of daily OCS use and users' satisfaction with OCS. Conclusions : There was an understandable relationship between users' attitude to OCS and factors affecting users' satisfaction. The results of this study could be used as a basis for the successful expansion of the operation of OCS. But more detailed studies on users' satisfaction and further improvements of methodologies are required for the successful establishment of OCS.

• 경영과정보연구
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• 제38권2호
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• pp.139-163
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• 2019

본 연구는 NCS 기업활용 컨설팅에 참여한 조직구성원이 인식하고 있는 고성과 작업시스템이 조직유효성에 미치는 영향과 이들 간 인사관리 효율성의 조절역할과 조직유효성과 조직성과 간에 대한 영향관계를 확인하고자 하였다. 본 연구목적을 달성하기 위해 적용한 설문결과는 통계적으로 최종 활용 가능한 145부에 대하여 SPSS 24.0의 통계프로그램을 활용하여 회귀분석을 실시하여 연구가설을 검증을 다음과 같이 하였다. 첫째, 가설 1인 고성과 적업시스템의 특성요인(선발시스템, 평가 보상, 교육훈련 경력기회, 구성원참여제도, 직무안정성)은 조직유효성에 정(+)의 영향관계에 대한 분석결과는 정(+)의 유의한 영향관계를 나타내어 채택이 되었다. 둘째, 가설 2인 조직유효성이 조직성과에 긍정적인 영향관계를 나타낼 것이라는 가설을 검증한 결과 정(+)의 영향을 나타내어 가설 2는 채택이 되었다. 셋째, 가설 3인 인사관리 효과성이 고성과 작업시스템(선발시스템, 평가 보상, 교육훈련 경력기회, 구성원 참여제도, 직무안정성)과 조직유효성 간의 조절역할을 확인하고자 조절회귀분석을 실시하였다. 이에 가설 3을 검증한 결과 선발시스템(H3-1), 평가 보상(H3-2), 교육훈련 경력기회(H3-3), 구성원 참여제도(H3-4), 직무안정성(H3-5)은 조직유효성 간에 인사관리 효과성은 조절역할을 나타내었다. 본 연구를 통해 나타낸 주요 시사점은 조직구성원들이 인식하고 있는 고성과 작업시스템은 조직유효성과 조직성과에 정(+)의 유의한 영향관계와 조직유효성이 조직성과에 긍정적인 영향을 나타냄에 따라 조직성과 향상을 통한 지속가능경영체계의 고도화를 위한 고성과 작업시스템과 조직유효성 향상 위한 인사 교육훈련 체계구축은 조직구성원의 공감대를 형성할 수 있도록 체계적이며 지속적인 실행방안이 요구되었다. 둘째, 인사관리 효과성에 대한 조절효과를 확인한 결과 고성과 작업시스템과 조직유효성 간 긍정적인 요인으로 조절역할을 실증적으로 검증하였다. 따라서 본 연구는 고성과 작업시스템을 통한 조직유효성과 이들 간 인사관리 효과성의 조절역할 및 조직유효성과 조직성과 간의 영향관계를 함께 검증한 부분이 선행연구와 가장 큰 차이점이라 할 수 있다.

• 한국안전학회지
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• 제27권5호
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• pp.171-178
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• 2012

Shipbuilding is basically labor-intensive industry. It creates a number of job opportunities, but it is classified as a high risk industry like the construction industry. Shipyards show similarities in many aspects compared with the construction sites. There are many stakeholders of the HSE managements in the shipbuilding industry, such as ship owner, primary contractor and multi-layered subcontractors. The ship owners who are almost foreigners are treating strictly about safety and health. Therefore, it is necessary to development an appropriate HSE management systems and for the management systems it is desirable to information technology (IT) to accommodate these complex and complicated problems and situations. It was developed the ISP (Information Strategic Planning) as a HSE management system for the shipbuilding industry. It consisted of the environment analysis, the As-Is analysis and the To-Be design. In this study, the ISP is introduced and further it is suggested that it should be connected to system of HR(Human resource), PM(Plant maintenance) and KM(Knowledge Management) to make the HSE management system efficient.

• 한국정보전자통신기술학회논문지
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• 제13권3호
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• pp.235-242
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• 2020

본 논문은 직원 채용 시 개인의 경력을 위조하여 취업하는 경우가 발생하는 문제점을 해결하기 위해 개인 경력정보를 블록체인을 통해 관리하고 검증해 줄 수 있는 시스템을 제안한다. 블록체인 네트워크는 프라이빗 네트워크를 사용하며, 블록 내부에는 사용자의 학력과 경력 정보를 보관한다. 블록체인의 기능은 블록 생성, 블록 내부 데이터 검색, 경력 및 학력 검증의 기능을 수행하며, 이는 체인코드를 통해 동작한다. 제안하는 시스템의 성능평가 결과 트랜잭션 당 처리시간은 약 110ms, 검색 시간은 10ms로 측정되었으며, 실제 시스템에 적용하여 사용가능함을 확인하였다.

• 한국비블리아학회지
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• 제28권4호
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• pp.157-179
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• 2017

본 연구는 전문도서관 사서를 대상으로 정보서비스 현황에 대한 사서의 인식을 조사하여 정책분야별 전문성과 역할을 강화하고 정보서비스의 지속적 발전을 모색하기 위해 수행되었다. 22개 정부출연 연구기관 도서관 사서를 대상으로 정보서비스 계획단계, 조사 제공단계, 평가단계, 시스템 운영, 사서에게 요구되는 필요능력, 역할 확대 및 변화에 대한 인식, 애로사항 등을 조사하였다. 설문지는 7영역, 12항목, 61문항으로 구성되었으며, 질적분석을 위하여 심층면담을 실시하였다. 연구결과에서 도서관의 신생업무로 연구정보 관리툴 도입 운영, 자문위원회 운영, 발간물 관련업무 수용 등을 발견하였다. 제언으로 직무중심의 모듈별 표준매뉴얼 제작, 주제전문사서로서의 역할 확대를 위한 계속교육, SNS의 적극적인 정보서비스 활용을 주장하였다.

• 산업경영시스템학회지
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• 제33권3호
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• pp.176-183
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• 2010

The benefits of information technology cannot be obtained unless potential users utilize it for their work. This led to a lot of research works on computer system acceptance. But most of the works address the early stage of system introduction, leaving the learning effect on system acceptance unexplored. In this longitudinal study, two groups of novice and experienced users have been empirically investigated and compared for their acceptance of computer system and for the learning effect of actual usage. A research model based on the technology acceptance theory has been proposed and applied to the two groups. The result shows that the factor job relevance gets more important and the effect of user training on system acceptance diminishes as time passes. This finding may help introducing computer systems which can be easily accepted by users over the whole life cycle period of computer systems.

• 한국산업정보학회논문지
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• 제22권3호
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• pp.63-76
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• 2017

전통적으로 군수지원체제 구축과 결과품질에 관심이 집중되는 환경 속에서도 군수현장에서는 상호작용 품질에 대한 사용부대의 니즈가 나타나기 시작했다. 군수 기능 중 보급, 정비, 급양부대가 제공하는 군수지원 서비스품질 차원 중에서 상호작용 품질이 사용부대의 만족에 더 큰 영향을 미친 것으로 나타났는데, 특히 정비기능의 상호작용 품질이 가장 영향력이 크게 나타났다. 설문조사를 통한 실증분석 결과와 현장 군수종사자의 인터뷰가 이를 잘 증명하고 있으며, 고객과 상호작용 활동이 두드러지는 정비 기능의 특성이 이를 뒷받침하고 있다. 또한 상대적으로 직무만족이 높은 정비부대 종사자가 제공하는 서비스가 사용부대의 만족을 향상시키는 결과를 가져왔다.

• 인간식물환경학회지
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• 제23권2호
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• pp.125-138
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• 2020

The aim of this study was to review previous literature to determine the effects of nature-based program for workers. This systematic review was conducted in accordance with National Evidence-based Healthcare Collaborating Agency's guidance for undertaking systematic reviews for intervention. Literature search was performed using National Assembly Digital Library, Korean Studies Information Service System, and Korea Education & Research Information Service for literature published until March 2019. The participants were full-time workers, and intervention of nature-based programs was conducted in the outdoor, indoor, and indirect nature contact exposures, with comparators in the control group who did not receive the treatment. The results showed that the programs were effective in physical, psychological, and social health. The methodological quality of randomized controlled trials (RCT) was assessed using the Cochrane Risk of Bias(RoB) tool, while non-randomized controlled trials (N-RCT) were assessed using the Cochrane Risk of bias assessment tool for non-randomized studuies (RoBANS). A total of 16 studies were selected for assessment: two RCTs, 10 N-RCTs, and four one-group pretest-posttest designs. Most interventions were provided at the workplace and in the community. There were many kinds of nature-based interventions, and forest therapy and horticultural therapy programs were most common. Various interventions for workers effectively improved job stress, depression, serum cortisol and stress-response. However, the included studies lacked methodological rigor. Future research is needed to evaluate the long-term effectiveness of nature-based programs for workers using rigorous research designs.