• 한국철도학회:학술대회논문집
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• 한국철도학회 2007년도 추계학술대회 논문집
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• pp.1541-1550
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• 2007

지하철은 대중교통 수단으로서 서울을 비롯한 도시에서는 없어서 안 되는 교통수단으로 자리 잡고 있어 이용하는 계층이 다양하게 구성되어 있다. 이러한 고객의 정보 제공 요구에 부응하기 위하여 다양한 정보표출과 정보통신 서비스 제공을 할 수 있도록 종합관제센터 및 역사에 광통신망이 설치 운용되고 있으며, 통신망 서비스 의존도가 약 95%를 차지함에 따라 안정적 운용은 필수적이다. 본 논문은 광통신망 구축 후 실질적 시스템 운영의 초기단계에서 유지보수 업무를 수행하면서 도출된 기술사항과 경보메시지 분석에 의한 효율적 운용방안을 기술한 것으로서, 현장에서 필요한 실질적 전문기술과 효율적 시스템 운영방식 공유와 동종 기관간의 운영노하우 상호 정보교류를 촉진 시키고자 한다. 도시철도에서의 광통신망은 열차운행을 위한 각종 제어망과 Data망을 수용하고 있어 전문적이고 효율적인 운영방안 정립이 필요함에 따라, 본 논문은 광통신시스템 효율적 운용과 전문조직 구성에 대하여 제시하였다.

• 디자인학연구
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• 제14권2호
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• pp.155-162
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• 2001

최근 인터넷 사용의 증가와 새로운 교육 패러다임의 요구에 따라 많은 교육 기관들이 사이버스페이스를 이용해 교육시스템을 운영하고 있다. 특히 여러 대학이 협력하여 학위과정을 제공하거나, 대학 자체적으로 원격강좌를 실시하는 형태들이 늘어나고 있다. 이러한 대부분의 교육은 이론과목을 중심으로 한 토론 중심의 형태가 주류를 이루고 있으나, 타 분야의 학문에서도 사용할 수 있는 도구의 개발도 지속적으로 이루어지고 있다. 이러한 사이버대학의 시스템은 앞으로 계속 발전할 것이지만, 현재 이용되고 있는 기술들을 효과적으로 사용하는 방법들도 고려되어야 한다. 따라서 본 논문은 교육적인 측면에서 사이버커뮤니케이션을 효과적으로 이용하는 방법에 대해연구하고, 그 대안을 제시하는데 그 목적이 있다. 이에 본 연구는 사이버커뮤니케이션의 역할과 교육적 효과에 대해 교육매체로서의 사이버커뮤니케이션, 협력학습을 위한 커뮤니케이션, 사이버스페이스 커뮤니케이션의 이론적 배경으로 나누어 고찰하고, 이에 따른 효과적인 학습전략을 학습공동체의 구성, 효과적인 학습요소로 나누어 제시한다.

• 디자인학연구
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• 제13권4호
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• pp.185-194
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• 2000

카피 작성의 목적은 발신자와 수신자의 의사 소통에 있다. 의사 소통은 언어를 통해 주로 이루어지고 있으며, 언어는 그 사회의 문화적 특징을 반영한다고 할 수 있다. 또한 언어의 차이는 문화의 차이를 수반한다. 따라서, 광고 카피 또한 이런 문화적 특징을 반영한다면 그 효과가 크다할 수 있다. 본 연구는 광고 카피에 나타난 한국인의 의사 표현에 관한 것이다. 카피는 그 자체가 하나의 의사 표현이며, 의사 표현 유형은 문화와 언어의 차이에 따라 달라진다. 한국인의 의사 표현 유형은 감정적 의사 표현, 외면적 존엄성 표현, 권위주의적 표현, 공동체적 표현, 수동적 의사 표현으로 나눌 수 있다. 본 연구에서는 실제 광고 카피를 분석하여, 카피에 한국인의 의사 표현이 어떻게 표현되었는가를 알아보고, 그 결과를 제시하였다. 또한 더욱 효력 있는 광고를 위해 앞으로의 과제를 제안하였다.

• ETRI Journal
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• 제40권5호
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• pp.664-676
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• 2018

Given the rapidly increasing market penetration of photovoltaic (PV) systems in many fields, including construction and housing, the effective maintenance of PV systems through remote monitoring at the panel level has attracted attention to quickly detect faults that cause reductions in yearly PV energy production, and which can reduce the whole-life cost. A key point of PV monitoring at the panel level is cost-effectiveness, as the installation of the massive PV panels that comprise PV systems is showing rapid growth in the market. This paper proposes an implementation method that involves the use of a panel-level wireless PV monitoring module (WPMM), and which assesses the cost-effectiveness of this approach. To maximize the cost-effectiveness, the designed WPMM uses a voltage-divider scheme for voltage metering and a shunt-resistor scheme for current metering. In addition, the proposed method offsets the effect of element errors by extracting calibration parameters. Furthermore, a design method is presented for portable and user-friendly PV monitoring, and demonstration results using a commercial 30-kW PV system are described.

• International Journal of Advanced Culture Technology
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• 제8권2호
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• pp.6-11
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• 2020

In today's world, the design industry is becoming more complex, with the development of networks such as the internet and revolutionary changes in information and telecommunications. As the demand for designers to cope with various situations occurring in these industrial sites or solve problems in practice promptly is required, a capstone design program was developed in collaboration with the industry. Capstone design classes have positive effects on creative problem solving ability, academic achievement and learning satisfaction by allowing students to think and experience the practical problems of the industrial field. It is also effective in improving communication, creative thinking and critical thinking. The purpose of this study is to search for talent training methods needed in the fashion industry and to develop effective programs through capstone design class studies conducted in the fourth grade of fashion design majors from 2017 to 2019 (6 semesters). Through these studies, the aim is to search for talent training methods needed in the fashion industry and to develop effective programs. If the capstone design learning method is used as a method of solving problems through close communication between the company and the educational field as an industry-academia cooperation system, it is expected to be positioned as a field-type human resource education method that is required in the industrial field.

• Journal of the Optical Society of Korea
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• 제20권6호
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• pp.704-715
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• 2016

In this paper, we explore a low-complex bandwidth allocation (BA) scheme with multi-level service guarantees in VLC-OFDM systems. Effective capacity theory, which evaluates wireless channel capacity from a novel view, is utilized to model the system capacity under delay QoS constraints of the link layer. Since intensity modulation of light is used in the system, problems caused by frequency selectivity can be neglected. Then, the BA problem can be formulated as an integer programming problem and it is further relaxed and transformed into a concave one. Lagrangian formulation is used to reformulate the concave problem. Considering the inefficiency of traditional gradient-based schemes and the demand for distributed implementation in local area networks, we localize the global parameters and propose a quasi-distributed quadratic allocation algorithm to provide two-level service guarantees, the first level is QoS oriented, and the second level is QoE oriented. Simulations have shown the efficient performance of the proposed algorithm. The users with more stringent QoS requirements require more subcarriers to guarantee their statistical delay QoS requirements. We also analyze the effect of subcarrier granularity on the aggregate effective capacity via simulations.

• 한국조경학회지
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• 제19권2호
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• pp.32-40
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• 1991

Damage to natural resources from inappropriate visitor behavior is a problem faced by National Park management. Based on the data gathered by personal interview and mail questionnaire, this study examines the effects of communication strategies to reduce depreciative behavior in Carlsbad Caverns National Park. One-quarter of Carlsbad Caverns visitors indicates that they have noticed damage to cave formation during their tour. Almost 38% of visitors say that they have witnessed someone touch a formation inside the Caverns. This is a relatively high percentage compared with other depreciative behavior research to refrain from "tattling" on fellow visitors. Two-thirds of the respondents recalls touching formation replicas before entering the Cavern, while almost all visitors (97.9%) say that they have heard the ranger's talk about not touching formation or leaving the trail. Visitors feel that the ranger's talk is more effective in reducing depreciative behavior than the formation replicas, although at least three-fourths of all respondents believes both techniques are effective.

• 구강회복응용과학지
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• 제21권2호
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• pp.183-189
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• 2005

There is no single or simple answer for effective communication between laboratory technician and clinical dentist. Love-hate could be used to describe the relationship between dentists and their labs. Great lab work can make a dentists life much easier and can result in getting many referrals. However, if the lab work is not up to par and/or late, it can add stress and agony to a dentists practice. Also the opposition is right. If the preparations are calibrated, the impressions clear, and the bite registrations accurate, most labs can do their work reasonably well. Unfortunately, many cases received by labs are barely adequate, especially when it comes to reading margins, which are frequently created by the imagination of the person trimming the dies. In other words, both dentists and lab technicians need to be able to understand how each party operates so that solutions to problems can be found. Effective communication with the laboratory is critical if any degree of success is desired.

• JSTS:Journal of Semiconductor Technology and Science
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• 제8권1호
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• pp.92-97
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• 2008

In this Paper, we present a scaling theory for dual material surrounding gate (DMSGTs) MOSFETs, which gives a guidance for the device design and maintaining a precise subthreshold factor for given device parameters. By studying the subthreshold conducting phenomenon of DMSGTs, the effective conductive path effect (ECPE) is employed to acquire the natural length to guide the design. With ECPE, the minimum channel potential is used to monitor the subthreshold behavior. The effect of ECPE on scaling factor significantly improves the subthreshold swing compared to conventional scaling rule. This proposed model offers the basic designing guidance for dual material surrounding gate MOSFETs.

• International journal of advanced smart convergence
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• 제5권2호
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• pp.8-17
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• 2016

Scratch-based programming has come to be known as an effective programming tool because of its graphic instruction modules, which are designed to be assembled like the famous LEGO building blocks. These building block-like structures allow users to more easily program applications without using other more difficult programming languages such as C or Java, which are text-based. Therefore, it poses a good opportunity for application in educational settings, especially in primary schools. This paper presents an effective approach to developing an educational robot for use in elementary schools. Furthermore, we present the method for scratch programming based on the external modules need for the implementation of robot motion. Lastly, we design a systematic curriculum, titled "Play with a Robot," and propose guidelines to using the educational programming language Scratch.