• 한국전자통신학회논문지
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• 제17권6호
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• pp.1105-1112
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• 2022

신재생에너지 발전, 스마트팜 통합관제 등 현장데이터의 모니터링 시스템은 PC, 서버 기반에서 모바일 퍼스트 중심으로 발전하고 있으며, IoT 기술의 발전으로 다양한 무선통신 및 응용 서비스들이 출현하였다. 저전력 광역통신망은 저전력, 저용량, 저속 데이터 전송에 최적화된 서비스로 현장에서 수집된 데이터는 지정 저장 서버나 클라우드 기반 데이터 플랫폼으로 전송되며, 이를 통해 데이터 모니터링이 가능하다. 본 논문에서는 단일 디바이스로 현장 데이터를 수집하고 저전력 광역통신망을 이용하여 무선통신 사업자 클라우드 데이터 플랫폼으로 전송하는 IoT 중계기와 이를 활용한 현장 모니터링 앱을 설계 및 구현하였다. 이를 활용하면 보다 모니터링 시스템 구성이 간단하고, 구축 및 운영 비용이 저렴하며 효과적인 데이터 축적이 가능하다.

• 한국전자통신학회논문지
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• 제15권2호
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• pp.327-334
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• 2020

본 논문에서는 위성으로부터의 전파를 이용해 지상의 위치를 측정하는 글로벌 위성항법시스템(GNSS)과 음향측심기를 같이 사용하여 저수지의 정확한 위치 정보와 수심 정보 데이터를 동시에 획득할 수 있는 무인 조사 시스템을 개발하였다. 이 시스템은 자동 경로 생성 프로그램으로 5m, 10m 및 20m의 그리드 크기에 대한 입력 조건에 따라 자동으로 순항 경로를 생성토록 하였고, 또한 자동으로 정확한 순항 경로를 제어하도록 하였다. 개발된 시스템은 전라남도 순천시 서면에 위치한 용곡(건천) 저수지에서 적용 가능성을 검증하였다. 61.1ha의 전체 저수지 수역 조사 시간에 대한 검증 결과는 새로운 시스템이 매우 높은 품질의 공간 분해능을 포함하여 저수지의 수심을 신속하게 조사할 수 있음을 나타내었다.

• 기본간호학회지
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• 제21권2호
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• pp.151-161
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• 2014

Purpose: The purpose of this study was to identify the risk factors that influence surgical site infections after surgery. Methods: This study was a retrospective research utilizing Electronic Medical Records. Data collection targeted 4,510 adult patients who had 8 different kinds of surgery (gastric surgery, colon surgery, laparoscopic cholecystectomy, hip & knee replacement, hysterectomy, cesarean section, cardiac surgery) in 4 medical care departments, at one general hospital between January 2006 and December 2011. Multivariate logistic regression analyses were used to identify the risk factors affecting surgical site infections after surgery. Results: Risk factors for increased surgical site infection following surgery were confirmed to be age (OR=1.59, p<.001), BMI (Body Mass Index)(OR=1.25, p=.034), year of operation (OR=2.45, p<.001), length of operation (OR=3.06, p<.001), ASA (American Society of Anesthesiology) score (OR=1.36, p=.025), classification of antibiotic used (OR=2.77, p<.001), duration of the prophylactic antibiotics use (OR=1.85, p<.001), and interaction between classification of antibiotic used and duration of the prophylactic antibiotics use (OR=1.90, p=.016). Conclusions: Results suggest that risk factors affecting surgical site infections should be monitored before surgery. The results of this study should contribute to establishing effective infection management measures and implementing surveillance systems for patients who have actual risk factors.

• 한국정밀공학회지
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• 제12권10호
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• pp.40-49
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• 1995

This paper presents the performance and problems in analysis method and testing system of Electronic Speckle Pattern Interferometry (ESPI) method, in measuring two - dimensional in-plane displacement. The anyalysis result of measurement by ESPE is quite comparable to that tof measurement by strain gauge method. This implies that the method of ESPE is a very effective tool in non-contact two-dimensional in-plane strain analysis. But there is a controversal point, measurment error. This error is discussed to be affected not by ESPE method itself, but by its analysis scheme of the interference fringe, where the first-order interpolation has been applied to the points of strain measured. In this case, it is turned out that the more errors would be occurred in the large interval of fringe. And so this paper describes a computer method for drawing when the height is available only for some arbitrary collection of points. The method is based on a distance-weighted, last- squares approximation technique with the weight varying with the distance of the data points.

• 한국전자통신학회논문지
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• 제18권6호
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• pp.1189-1196
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• 2023

실내 공간과 관련된 정보는 도시화의 가속과 기술의 발달로 인하여 그 중요성이 증가하고 있으며, 건물 내부의 다목적 활용을 위하여 다양한 스캐닝 기술이 개발되고 있다. 본 논문에서는 스캐닝에 2D 라이다를 이용하여 지면과 수직인 방향으로 라이다를 회전 및 이동시키며 2차원 데이터의 집합을 얻은 후 이를 취합하여 3차원의 실내 공간 정보를 얻는 시스템을 제안하였다. 최종적으로 오차 보정 등의 알고리즘을 적용하여 실내 구조를 입체적으로 시각화하여 출력하였다.

• International Journal of Computer Science & Network Security
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• 제23권10호
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• pp.57-66
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• 2023

Since 2009, Morocco has had a law governing the processing of personal data, the law 09-08, and a supervisory authority, the CNDP (National Commission for the Protection of Personal Data). Since May 2018, the European General Regulation on the Protection of Personal Data (GDPR) entered into force, which applies outside the EU in certain cases and therefore to certain Moroccan companies. The question of the protection of personal data is primarily addressed to the customer. The latter may not only be a victim of crime linked to ICT, but also have to face risks linked to the collection and abusive processing of his personal data by the private and public sectors. Often the customer does not really know how their data is stored, nor for how long and for what purpose. This fact raises the question of satisfying customer requirements, in particular for organizations that have adopted a quality approach based on ISO 9001 standard.In order to master these constraints, Moroccan companies have to adopt strategies based on modern quality management techniques, especially the adoption of principles issued from the international standard ISO 9001 while being confirmed by the law 09-08. It is through ISO 9001 and the law 09-08 that these companies can refer to recognized approaches in terms of quality and compliance. The major challenge for these companies is to have a Quality approach that allows the coexistence between the law 09-08 and ISO 9001 standard and this article deals within this specific context.

• 한국도서관정보학회지
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• 제24권
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• pp.45-79
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• 1996

Rising publication costs and declining financial resources have resulted in renewed interest among librarians in resource sharing. Although the idea of sharing resources is not new, there is a sense of urgency not seen in the past. Driven by rising publication costs and static and often shrinking budgets, librarians are embracing resource sharing as an idea whose time may finally have come. Resource sharing in electronic environments is creating a shift in the concept of the library as a warehouse of print-based collection to the idea of the library as the point of access to need information. Much of the library's material will be delivered in electronic form, or printed. In this new paradigm libraries can not be expected to su n.0, pport research from their own collections. These changes, along with improved communications, computerization of administrative functions, fax and digital delivery of articles, advancement of data storage technologies, are improving the procedures and means for delivering needed information to library users. In short, for resource sharing to be truly effective and efficient, however, automation and data communication are essential. The possibility of using full-text online databases as a su n.0, pplement to interlibrary loan for document delivery is examined. At this point, this article presents possibility of using full-text online databases as a means to interlibrary loan for document delivery. The findings of the study can be summarized as follows : First, turn-around time and the cost of getting a hard copy of a journal article from online full-text databases was comparable to the other document delivery services. Second, the use of full-text online databases should be considered as a method for promoting interlibrary loan services, as it is more cost-effective and labour saving. Third, for full-text databases to work as a document delivery system the databases must contain as many periodicals as possible and be loaded on as many systems as possible. Forth, to contain many scholarly research journals on full-text databases, we need guidelines to cover electronic document delivery, electronic reserves. Fifth, to be a full full-text database, more advanced information technologies are really needed.

• International journal of advanced smart convergence
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• 제5권1호
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• pp.16-22
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• 2016

The database integration is being emphasized to one way of the companies collaboration. To database integration, companies are use like one database what their own, it can be provided more efficient service to customer. However, there exist some difficulty to database integration. that is the database security and database heterogeneity problems. In this paper, we proposed the MapReduce based p2p DBaaS hub system to solve database heterogeneity problem. The proposed system provides an environment for companies in the P2P cloud to integrate a database of each other. The proposed system uses DBaaS Hub for a collection of data in the P2P cloud, and use MapReduce for integrating the collected data.

• 대한가정학회지
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• 제38권8호
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• pp.1-11
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• 2000

The purpose of the study was to investigate the relationship among management strategic type, QR system adoption and the usage level of technologies. Also the current situation about the management strategies for the Korean apparel manufacturers was examined in this study. A random sample of 102 apparel manufacturers was selected for the data collection. A survey method was used with the structured questionnaire, and for the data analysis, chi-square test, ANOVA and Duncan's multiple range tests were used. The resets were as following: 1. The most identified strategic type among Korean apparel manufacturers was analyzer and the defender. 2. The most frequently used technologies were small lot orders and the reduction in the inventory level, and the least used technologies were the electronic order system and UPS. 3. The management strategic type was significantly related to the adoption and the usage level of technologies.

• 한국정보통신학회논문지
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• 제24권12호
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• pp.1697-1703
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• 2020

주변 환경으로부터 직접 데이터를 수집하는 센서 노드는 많은 제약 조건을 가지기 때문에 자원의 효율적인 사용이 필요하다. 본 논문에서는 도로를 주행 중인 차량의 위치 데이터를 수신하는 센서 노드에서, 칼만 필터로 추정한 대상의 속도와 이동 거리 가중치로 데이터 수신 주기를 변경한다. 차량의 속도가 느릴수록 센서 노드의 데이터 수신 주기를 길게 함으로써 전체 네트워크에서 이루어지는 연산 시간을 줄일 수 있다. 제안하는 기법은 MATLAB으로 구현된 교통 시뮬레이터를 통하여 검증하였으며, 기존 방법에 비해 제안하는 기법을 사용하는 센서 네트워크에서 연산에 소요되는 시간이 감소하는 것을 확인하였다.