• Proceedings of the Korea Information Processing Society Conference
• /
• 2015.10a
• /
• pp.485-488
• /
• 2015

지속가능한 모바일 상황인지 서비스를 위한 효율적인 전력 사용에 대한 연구가 요구된다. 모바일 상황인지 서비스에 대한 전력소비 연구를 위해서는 모바일 상황에 맞는 전력 측정 및 분석 도구가 요구되며, 모바일기기 내부의 다양한 모듈의 동작에 대한 관찰이 가능해야 한다. 하지만 기존의 전력측정 도구의 경우 센서동작에 대한 모델링에 대해 ON/OFF 와 같은 간단한 모델로 정의하여, 전력의 원인이 되는 센서모듈의 동작에 대한 정보를 얻기 어렵다. 이에 본 논문에서는 GPS 모듈을 대상으로 안드로이드 API 계층에서 명시하는 모듈의 동작을 바탕으로 GPS동작정보를 기록하는 전력측정도구를 제안하였다. 제안된 전력측정도구를 이용하여 상용 내비게이션 애플리케이션의 실행에 따른 전력소모를 측정하였으며, API에 명시된 GPS 모듈의 동작상태들의 변화를 확인하였다.

• Environmental and Resource Economics Review
• /
• v.30 no.2
• /
• pp.347-364
• /
• 2021

Carbon neutral policy in Korea pays limited attention to the concept of sustainable economic growth. This limitation can be compared with other countries' carbon neutral policies such as US, UK and China where the climate change policies are closely connected to economic policies to boost further economic growth. This paper adopts a Ramsey growth model to account for the impact of carbon neutral policy on long-term economic growth and the accumulation capital. The model incorporates the Hartwick rule to allow sustainability of economic growth by transforming resource input into other input factor for growth. The analysis provides a possibility of low accumulation of capital as a result of carbon neutral policy in the absence of effective transformation of fossil-fuel factor into growth-related productive capital. Such low capital stock can be more aggravated when there exists a rent-seeking behavior of various interest groups with voracity to exploit social capital.

• Fire Science and Engineering
• /
• v.24 no.1
• /
• pp.46-53
• /
• 2010

This is a case report of a photo-electric single station alarm for residential fire prevention. The detector was developed for the certification in Japanese market which is more than 100 times bigger than Korean market. A comparison and review for test standard owned by KFI (Korea Institute of Fire Industry & Technology) and JFEII (Japan Fire Equipment Inspection Institute) respectively is also conducted. The detector alarms with a buzzer and an indicating LED. Operating period and time in alarm, low battery and fire situation is stated. The electronics circuit part to reduce its current and the detector's characteristics are described. It is explained that the measured current and experimental result of the battery discharge can meet the 10 years operation.

• Resources Recycling
• /
• v.19 no.5
• /
• pp.13-24
• /
• 2010

To investigate the necessity and background of the metal recycling from urban mine resources, 4 bigger problems such as the limitation of the underground resources, consumption of the metal resources, contamination of environment and metal recycling business were reviewed. Waste management and recycling are the foremost issues facing Korea on its path to sustainable development in the 21st century. Especially, metal recycling from urban mines is the most urgent fact for global environment and resources conservation. In order to build a recycling-oriented society, it is necessary to develop the recycling technology, recycling practices and a recycling-oriented economic system.

• Journal of Korean Home Economics Education Association
• /
• v.34 no.3
• /
• pp.149-167
• /
• 2022

The purpose of this study was to identify learning topics linked to Sustainable Development Goals(SDGs) in the dietary life unit of middle school technology and home economics textbooks and to develop teaching-learning plans and learning materials to verify the feasibility and field suitability. This study was carried out through analysis, design, development, and evaluation stages, and the results are as follows. First, in the analysis stage, the dietary life contents of the five home economics textbooks written based on the 2015 revised curriculum were analyzed, and dietary life-related goals were extracted from the 169 SDG targets to reorganize the learning topics linked to the contents of the textbooks. Second, in the design stage, the overall goal of the entire class was set and each session was designed by selecting the learning goals, learning topics, and learning contents, reflecting the SDGs related to the session to be developed. Based on the analyses of textbooks and the SDGs related to dietary life, the themes of 'desirable eating habits of adolescents', 'food production', 'food distribution', and 'food consumption and disposal' were extracted. Third, in the development stage, a total of 11 teaching-learning plans and student worksheets were developed, and an evaluation sheet was developed for expert verification. Fourth, in the evaluation stage, the feasibility and field suitability of the teaching-learning plans were verified by 5 home economics teachers. Learning goals, learning contents, connectivity to related SDGs, and feasibility of teaching-learning plan were evaluated, and based on the assessment results, teaching-learning plans were revised.

• Proceedings of the Korean Society of Fisheries Technology Conference
• /
• 2000.10a
• /
• pp.205-206
• /
• 2000

흔히 '광어'라고 일컫는 넙치는 우리나라의 해산어류 중 가장 경제성이 높은 어류중의 하나이다. 우리나라의 넙치생산은 초기에는 주로 자연산의 어획에 의존하였으나 최근에는 양식기술의 발달로 생산의 대부분이 육상 양식에 의해 이루어지고 있다. 특히 인공종묘생산이 가능하고 먹이효율이 높아 성장속도가 빠르며 소비수요마저 커서 각광받는 산업으로 그 보급이 전국적으로 확대되고 있다. (중략)

• Proceedings of the Korean Information Science Society Conference
• /
• 2004.10a
• /
• pp.571-573
• /
• 2004

지금까지 시스템의 자원을 효율적으로 활용하고, 응용 프로그램의 실시간 응답을 보장하는 등의 사용자의 요구를 만족시키기 위해 다양한 다중 프로세스 스케줄링 기법들이 연구되어 왔다. 대부분의 스케줄링 기법들은 프로세서, 즉 CPU 자원을 어떻게 할당할 것인가에 초점을 맞추고 있다. 그러나 오늘날 급격한 발전을 이루고 있는 무선 모바일 네트워크 시스템에서는 전력 자원이 네트워크의 지속시간을 결정짓는 중요한 지표가 되기 때문에 프로세스 스케줄링 기법에 있어서도 전력 자원을 고려할 필요가 있다. 따라서 본 논문에서는 충.방전을 고려하여 전력 자원을 효율적으로 사용하기 위한 스케줄링 기법에 대해 연구하였다. 각 프로세스의 실행시간과 실행 시 소비되는 전력량을 기준으로 한 6가지의 스케줄링 기법을 제안하고 이를 비교 분석하여, 그 중 단위 실행시간 당 소비되는 전력량이 작은 순서로 프로세스를 실행시키는 스케줄링 기법이 가장 효율적임을 확인하였다.

• Proceedings of the Korea Information Processing Society Conference
• /
• 2023.11a
• /
• pp.876-877
• /
• 2023

3D 기술과 인공지능을 활용한 가상 옷장 앱 BBoM은 패스트패션의 환경 오염을 줄이고 지속 가능한 소비문화를 조성한다. 깊이 추정(depth estimation) 기술을 활용하여 2D 이미지를 3D 모델로 변환하였다. 이러한 기능은 소비자들의 소비 패턴에 도움을 줄 뿐만 아니라 1년 후에 연간탄소 배출량을 37% 감소시킬 수 있다.

• Journal of the Korean Geographical Society
• /
• v.42 no.1 s.118
• /
• pp.133-155
• /
• 2007

The sustainable urban development has emerged as a new paradigm of urban studies in recent years. A review of the literature of land use and transport policies in relation to sustainable development reveals a consensus that the main objectives of sustainable strategy should decrease the numbers and length of journeys, and change the land use pattern towards mixed use and high density. However, there is a lack of empirical research as to what types of policies might influence effectively the reduction in the energy consumption and emission of $CO_2$. in order to sustain urban development. This paper tries to construct the conceptual structure of the PSS(planning support system), which is designed to the simulation of the probable effects of policies and planning of different kinds in cities, and evaluate the sustainablilty level according to construct the structure of the PSS(planning support system), which is designed to the simulation of the probable effects of policies and planning of different kinds in cities, and evaluate the sustainablilty level according to the alternative scenarios. The PSS is composed of three components (input-modeling-output). The core of PSS is integrating land use-transport-environment modeling. The advantages of integrating land use-transport-environment modeling are well known, but there are very few such integrated modeling packages in practice. So this paper tries to apply TRANUS software, which is an integrated land use and transport model. The TRANUS system was calibrated to city of Yongin for the base year. The purpose of the application of TRANUS to Yongin is to examine the operability of TRANUS system in Korea. From the outputs and results of operating the system, TRANUS may be effectively used to evaluate the effects of alternative sustainable urban development policies, since sustainablilty indicators can be extracted from several aspects such as land use consumption, total trips, distance and cost, energy consumption, ratio of transport split.

• KSBB Journal
• /
• v.25 no.1
• /
• pp.1-10
• /
• 2010

Biodiesel is a type of biofuel obtained from bioresources and able to use in diesel vehicles as an alternative/additive to petro diesel. In recent biodiesel research, there are three main issues which include high quality biodiesel, low cost feed stock and a highly efficient biodiesel production process. The sustainable production and use of biodiesel are attracting much attention in the renewable energy field. In this paper, we review some of the literatures related to environmental and economic evaluation for biodiesel production and analysis the issues including life cycle assessment (LCA), global warming potential (GWP), energy consumption, biodiesel production cost, production technologies and feedstock.