• Broadcasting and Media Magazine
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• 제12권1호
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• pp.17-23
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• 2007

• Review of Korean Society for Internet Information
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• 제14권3호
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• pp.86-94
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• 2013

• The Science & Technology
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• 통권513호
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• pp.84-85
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• 2012

• Korean journal of communication and information
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• 제36권
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• pp.7-41
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• 2006

This study criticizes the wave of liberalization, privatization, thoughtless and uncontrolled over-competition in the electronic communication networks area. This criticism is based on the 'transport economics' on one side, the 'network neutrality debate' on the other side. Through these standpoints, this study insists that it needs to deal with a social agenda related to the problems such as unplanned and unbalanced development of electronic communication networks, double/tripple-investment in the communication industry, conflicts among network companies and the decline of public values. Also does this study stress on the new ideas in the electronic communication network policy and planning to manage these problems. Electronic communication networks are converging and their borders are blurred. As a result of these flows, the field of information technology, media and contents is faced with radical changes. These changes could be so critical and complicated that nobody can diagnose their multi-level implications. However, the one thing sure is that we should start from the communication networks to think and control a communication system. Therefore, we should discuss and plan the now-and-future of communication infrastructure and its management. we need not only a market mentality but also a socio-cultural mentality. In this respect, this study does insist that it requires the vision of digital democracy and democratic communication ecology to put the steps toward social communication system.

• Journal of Teachers' Pension
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• 제5권
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• pp.219-241
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• 2020

연기연금제도는 연금 지급개시연령 도달 이후 일정 기간 연금수급을 포기하는 대신 급여에 일정액을 가산하여 지급하는 제도이다. 연기연금은 지급개시연령 도달 이전에 수급을 신청하면 일정액을 가산하여 차감하고 지급하는 조기연금과 상호보완적인 기능을 수행하며 유연은퇴(flexible retirement)의 주요한 축을 구성한다. 연기연금제도의 정책적 목적은 수급자별 다양한 재무적 상황에 따라 보다 유연한 은퇴설계와 노후소득 확충을 지원하는 제도적 장치를 마련하는 것이다. 하지만 현재 연기연금제도는 국민연금에는 시행되고 있으나 사학연금을 비롯한 직역연금에는 도입되지 않고 있다. 최근 공적연금간 급여규정 수렴화에도 불구하고 사학연금을 비롯한 직역연금에서 연기연금을 도입하지 않는 배경에는 공적연금간 급여 형평성 등 많은 쟁점사항들이 영향을 미치기 때문일 것이다. 하지만 이 연구는 그러한 기저의 논쟁에서 벗어나 제도의 재무적 특성 분석을 목적으로 한다. 분석자료는 연금수급을 위한 요건을 충족한 퇴직자 중 연금수급연령 미도달자로 이들 대기자 그룹의 미시자료를 이용해 연기연금 적용 시 제도의 총급여액 증가를 야기하지 않는 재정 중립적 증액률(plan-neutral deferral rate)을 산출하였다. 분석결과, 분석자료를 대상으로 한 산술적 증액률은 6.75%였으나 민감도 분석의 결과를 반영한 적정수준은 6% 이하일 것으로 사료된다. 이는 장기적 추정의 특성상 적용되는 가정변수 수준에 따라 변동폭이 클 뿐만 아니라 하위 구성집단간의 이질적 특성으로 산출되는 증액률의 편차가 크기 때문이다. 따라서 재정 안정성을 훼손하지 않기 위해서는 보수적 관점의 접근이 필수적이다. 연구의 구성은 크게 세 부분으로 II장에서는 소득활동관련 연금의 주요한 수단으로 연기연금의 제도적 필요성을 검토하고, III장에서는 실제 사학연금 가입자 자료를 이용해 재정 중립적 증액률을 산출하고 주요 변수별, 특성 집단별 증액률에 대한 분석결과 및 시사점을 기술하였다. IV장에서는 장기 재정안정성을 저해하지 않기 위해 적정 증액률 산정 시 추가적으로 고려해야 되는 재무적 관련사항을 기술하였다.

• Journal of the Korean Institute of Landscape Architecture
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• 제50권3호
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• pp.19-34
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• 2022

This study was conducted to provide basic data that can be used when establishing Net Zero policies and implementation plans for non-urban settlements by quantitatively analyzing the Net Zero contribution to green infrastructure in rural areas corresponding to non-urban settlements. The main purpose is to first, systematize green infrastructure in rural areas, secondly derive basic units for each element of green infrastructure, and thirdly quantify and present the impact on Net Zero in Korea using these. In this study, CVR(Content Validity Ration) analysis was performed to verify the adequacy of green infrastructure elements in rural areas derived through research and analysis of previous studies, is as follows. First, Hubs of Green infrastructure in rural area include village forests, wetlands, farm land, and smart farms with a CVR value of .500 or higher. And Links of Green infrastructure in rural area include streams, village green areas, and LID (rainwater recycling). Second, the basic unit for each green infrastructure element was presented by classifying it into minimum, maximum, and median values using the results of previous studies so that it could be used for spatial planning and design for Net Zero. Third, when Green infrastructure in rural areas is applied to non-urban settlements in Korea, it is analyzed that it has the effect of indirectly reducing CO₂ by at least 70.76 million tons and up to 141.16 million tons. This is 3.4 to 6.7 times the amount of CO₂ emission from the agricultural sector in 2019, and it can be seen that the contribution to Net Zero is very high. It is expected to greatly contribute to the transformation of the ecosystem. This study quantitatively presented the carbon-neutral contribution to settlements located in non-urban areas, and by deriving the carbon reduction unit for each element of green infrastructure in rural areas, it can be used in spatial planning and design for carbon-neutral at the village level. It has significance as a basic research. In particular, the basic unit of carbon reduction for each green infrastructure factors will be usable for Net Zero policy at the village level, presenting a quantitative target when establishing a plan, and checking whether or not it has been achieved. In addition, based on this, it will be possible to expand and apply Net Zero at regional and city units such as cities, counties, and districts.

• Journal of the Society of Naval Architects of Korea
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• 제54권4호
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• pp.344-351
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• 2017

CAD systems used in various manufacturing industries have been rapidly switched from 2D to 3D. 3D-based design is becoming common in the shipbuilding industries too. However, there is still a demand for 2D drawings for ship production. So, it is necessary to continually improve 2D drawings. One way to improve 2D drawings is to add production information to the drawings. To do this, it is necessary to define the relation between the geometry information and the production information. Various types of drawings, which is inevitable because each drawing has its own purpose, make it difficult to define relations. This process can be simplified if the drawing information is neutralized. XML is a standard format for defining neutral data, and is already being used in various fields. In this study, a neutral augmented drawing has been defined by neutralizing the drawing information based on XML, and implemented for the allocation of their information with high quality of readability as well.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• 제20권1호
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• pp.1-9
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• 2020

In highly complex EPC(engineering, procurement, construction)-based manufacturing processes such as shipbuilding and marine plants, it is essential to prepare a way to enable organic working at the site referring to each other's detailed working data for collaboration between partner companies. However, companies cannot share the progress of the sites including working information in real-time due to the use of SW unique to each company and the complex site management system. As a result, the construction process is delayed, and resources are used inefficiently. This study developed a neutral data generation algorithm that can apply the working information in various file formats to a collaborative manufacturing process. In addition, this study verified the accuracy of the algorithm by applying the developed algorithm to the manufacturing process of piping in shipbuilding and marine plants, developing the SW for visualization of working information using the generated neutral data, and comparing the coordinate, shape & dimension and the kind, number, and spec. of BOM. The result confirmed that the accuracy of the coordinate of the neutral data was 99%, and that of the shape & dimension of the neutral data and BOM Spec. was both 100%. It is thought that this study can be used for overcoming the restrictions in information sharing due to the development of informatization at companies and maximizing the share of working file information in a complex manufacturing process.

• Journal of the Korean Institute of Landscape Architecture
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• 제52권5호
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• pp.15-26
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• 2024

This study developed items to evaluate the Net Zero contribution of urban parks, which were suggested as additional carbon sinks for achieving the 2050 Net Zero goal, and the results of the study are as follows. First, the evaluation items that were introduced were 46 items in 9 fields selected by investigating and analyzing previous studies and related systems. Second, FGI and Delphi analyses were conducted to verify the appropriateness of the derived items, and 22 evaluation items in 10 fields were ultimately derived. Third, the results of AHP analysis to set the importance of the evaluation items showed that the planting technique was the highest among the 10 fields. In terms of the importance of each item, the green space system connection item was analyzed as the highest in the relative decision method, and the planting item of tree species with high carbon absorption was analyzed as the highest in the absolute decision method. This study differs from previous studies in that it presents items that can evaluate the Net Zero contribution of urban parks, and additionally conducts an importance analysis of each item so that it can be used to determine priorities for improving the contribution to Net Zero. In addition, the results of a comparative analysis of the relative and absolute decision methods when utilizing the AHP technique were intended to be used as a basic study for related follow-up studies.

• Smart Media Journal
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• 제12권5호
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• pp.36-45
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• 2023

Recently, in digital agriculture, the types and utilization of greenhouses based on IoT are spreading, and greenhouses are being modernized, enlarged, and even factoryized using smart technology. However, a specific standardization plan has not been proposed according to the equipment for data collection in the smart greenhouse and the size or shape of the greenhouse. In other words, there is a lack of standard data for facility equipment, such as the type and number of sensors and equipment according to the size of the greenhouse, the type of greenhouse construction film and materials suitable for crops and carbon neutrality. Therefore, in this study, the suitability of the implementation, installation and quantity of IoT equipment for data collection was tested, and some standard technologies were presented through the implementation of data collection and communication methods. In addition, impact strength, tensile, tear, elongation, light transmittance, and lifespan issues for PE, PVC, and EVA, which account for about 90% of existing greenhouses, were presented, and the shape, size, and environmental problems of greenhouses made of films were presented. presented in the text. In this research paper, a standardized carbon-neutral modular smart greenhouse using nano-material film was implemented as a solution to environmental problems such as greenhouse size, farm crop type, greenhouse lifespan, and film, and its performance with existing greenhouses was analyzed and presented. Through this, we propose a modularized greenhouse that can be expanded or reduced freely without distinction in the size of the greenhouse or the shape of farmhouse crops, and the lifespan is extended and standardized. Finally, the average characteristics of greenhouses using existing PE, PVC, and EVA films and the characteristics of greenhouses using new carbon-neutral nanomaterials are compared and reviewed, and a plan to implement an expandable IoT greenhouse that supports carbon neutrality is proposed.