• 한국태양에너지학회 논문집
• /
• 제36권2호
• /
• pp.19-29
• /
• 2016

Whilst there are growing interests in pursuing energy efficiency and zero-energy buildings in built environment, it is widely recognised that Building-Integrated Photovoltaic (BIPV) is one of the most promising and required technologies to achieve these goals in recent years. Although BIPV is a broadly utilized technique in variety of fields in built environments, it is required that generation of BIVP should be analysed and calculated by external specialists. The aim of this research is to focus on developing a new diagram for prediction of the pre-estimation model in early design stage to harness solar radiation data, PV types, slopes, azimuth and so forth. The results of this study show as follows: 1) We analysed 162 districts in a national level and the examined areas were categorised into five zones. The standard deviation of the results was 2.9 per cent; 2) The increased value of solar radiation on a vertical plane in five categorised zones was 42kWh/m3, and the result was similar to the average value of 43.8kWh/m3; and 3) The pre-estimation of diagram was developed based on the categorisation of zones and azimuth as well as the results of the developed diagram showed little difference compared to the previously utilised method. The suggested diagram in this paper will contribute to estimate BIPV without any external contribution to calculate the value. Even though the result of this study shows little difference, it is required to investigate a number of different variables such as BIPV types, modules, slope angle and so forth in order to develop an integrated pre-estimation diagram.

• 전자통신동향분석
• /
• 제35권4호
• /
• pp.1-10
• /
• 2020

Since the 1960s, semiconductor packaging technology has developed into electrical joining techniques using lead frames or C4 bumps using tin-lead solder compositions based on traditional reflow processes. To meet the demands of a highly integrated semiconductor device, high reliability, high productivity, and an eco-friendly simplified process, packaging technology was required to use new materials and processes such as lead-free solder, epoxy-based non cleaning interconnection material, and laser based high-speed processes. For next generation semiconductor packaging, the study status of two epoxy-based interconnection materials such as fluxing and hybrid underfills along with a laser-assisted bonding process were introduced for fine pitch semiconductor applications. The fluxing underfill is a solvent-free and non-washing epoxy-based material, which combines the underfill role and fluxing function of the Surface Mounting Technology (SMT) process. The hybrid underfill is a mixture of the above fluxing underfill and lead-free solder powder. For low-heat-resistant substrate applications such as polyethylene terephthalate (PET) and high productivity, laser-assisted bonding technology is introduced with two epoxy-based underfill materials. Fluxing and hybrid underfills as next-generation semiconductor packaging materials along with laser-assisted bonding as a new process are expected to play an active role in next-generation large displays and Augmented Reality (AR) and Virtual Reality (VR) markets.

• 한국실내디자인학회논문집
• /
• 제26권6호
• /
• pp.163-171
• /
• 2017

Brick is not only aesthetically beautiful and emotional material, but also eco-friendly and good building commodity for human health. Nonetheless, the use of brick has declined, due to the difficulty of building high-rise buildings and the limitation of the free form implementation. However, modern society is increasingly interested in environmentally friendly finishing materials for solving environmental problems. From this point of view, the brick architecture is being reexamined as a material to improve the living environment and to provide comfort without destroying nature. In addition, the development of digital technology enables the implementation of various types of masonry method and curved forms. Parametric design is one of the ways to realize the curved forms and various architectural expressions for brick architecture. In this background, the purpose of this study is to develop algorithms that can easily generate curved brick walls through parametric design, enable various pattern designs, and respond to real-time feedback. The details of the study are as follows. First of all, we examine organic architecture, the trend of brick architecture, and the concept of parametric design. Secondly, In order to generate curved surface with complex curvature, major planning factors affecting form generation are examined. Finally, we develop a parametric design method that consists of generating a curved surface for brick arrangement, implementing a parametric algorithm, and generating a curved form using bricks. Consequentially, we propose an algorithm that can maximize the use of ready-made bricks without using cut bricks to design curved walls and present efficient and economical design alternatives.

• 한국콘텐츠학회논문지
• /
• 제19권8호
• /
• pp.620-629
• /
• 2019

현재 취업을 준비하는 세대와 베이비부머 세대, 에코세대 간에는 직업의식과 일자리에 대한 인식이 매우 다를 것으로 예측된다. 평생직장보다는 평생직업을 중시하는 것으로 인지되고 있는 현 세대의 일자리에 관한 인식을 파악하는 것은 향후 직업연구와 일자리 정책에 중요한 기여를 할 것으로 판단된다. 본 연구는 노동시장으로 이행을 준비하고 있는 졸업 예정자인 대학 4학년생의 괜찮은 일자리에 대한 주관적 인식을 살펴보고 유형화하고자 하였다. 이에 연구방법으로는 Q 방법론을 활용하였으며, 다양한 문헌연구와 면담을 통해 291개의 Q 진술문을 도출하고 연구대상자와 전문가의 검토를 통해 총 47개 Q 표본을 구축하였다. 또한, P 표본으로 선정된 대학 4학년생 총 31명을 대상으로 Q 표본을 Q 분류표에 배치하는 방식으로 진행하였다. 연구결과 분석 프로그램으로는 Ken-Q Analysis를 활용하였다. 연구결과, 괜찮은 일자리에 대한 대학 4학년생의 인식유형은 '흥미 지향형', '균형 추구형', '조직 지향형', '권력 추구형', '발전 지향형'의 총 5개의 유형으로 도출되었으며, 이러한 연구결과를 통해 괜찮은 일자리에 대한 인식이 다양함을 확인하였다. 나아가, 본 연구 결과를 바탕으로 노동시장 진입에 실제적인 도움이 될 수 있도록 제언을 제시하였다.

• 한국기후변화학회지
• /
• 제8권3호
• /
• pp.265-273
• /
• 2017

Recently the Paris Climate Change Accord has been officially put into effect, making global efforts to implement Greenhouse Gas (GHG) reductions, and also International environmental regulations in the automotive sector will be further strengthened. The electric vehicle, which minimizes the particulate matter generated by existing internal combustion engine automobiles, is evaluated as a representative eco-friendly automobile. However, charging the battery of an electric vehicle is not fully environment-friendly if it is fueled by electricity that is being generated by fossil fuels as an energy source. The energy generated by the photovoltaic power generation system, which is an infinite clean energy, can be used to charge an electric vehicle's battery. Currently, shortage of charging facilities, time of charging, and high battery prices are the problem of activating the supply of electric vehicles. This study is to build a conjunction between the EVBSS (Electric Vehicle Battery Supply System) and ESS (Energy Storage System), which can quickly supply the photovoltaic charged battery to the required demand. If the charged battery in the Battery Swapping Station (BSS) is swapped swiftly, it will dramatically shorten the waiting time for charging the battery. As a result, if the battery is rented when it is needed, electric vehicles can be sold without the cost of a battery, which accounts for a large portion of the total cost, then the supply of electric vehicles are expected to expand. Furthermore, it will be an important alternative to maneuver climate change by minimizing GHG emissions from internal combustion engine vehicles.

• 한국의상디자인학회지
• /
• 제25권2호
• /
• pp.1-16
• /
• 2023

Due to the current seriousness of environmental pollution and the eco-friendly movement of the fashion industry, research on sustainable fashion design is being actively conducted. In this study, consumer perception of upcycling products, are divided into image, function, and meaning; and image is further divided into shape, color, and material. It was redefined as pattern, and image recognition was evaluated among men and women in their 20s and 30s, and men and women in their 40s and 50s used as subjects. First, factors that determine each image were extracted based on qualitative analysis of the precedent cases of upcycling bags, and quantitative analysis of the subjects was induced through a questionnaire. As a result of the analysis of evaluation items related to image association, the average frequency analysis of all subjects for each stimuli and the cognitive variance of the frequency analysis by generation by gender were found to be similar. However, awareness of some stimuli by generation showed a significant difference. Overall, in the three stimuli with high overall preference, common features, such as the basic box-shaped symmetrical structure, the monochromatic color of the Munsell system, solid and practical texture, and appropriate use of patterns were identified. In addition, it was confirmed that there was a difference with factors such as femininity, simplicity, touch, and splendor in the measurement factors. In conclusion, it is considered that the main significance of this study is that it excluded the recognition and meaning of upcycling products and explored the original design and image elements of products. Therefore, it is expected that this study will be used as a basic data for responding to the gender image of each generation as an alternative method of sustainable fashion design, and it will be an opportunity to expand the scope of the study to a detailed study beyond the biased topic.

• 한국측량학회:학술대회논문집
• /
• 한국측량학회 2007년도 춘계학술발표회 논문집
• /
• pp.467-470
• /
• 2007

A golf course provides comfortable leisure space, but construction of it demands eco-friendly design which minimizes the environmental spoil and harmonizes its surroundings. Therefore, it is highly recommended that appropriate understanding of existing golf course, accurate estimation of new golf course design and precise construction. In this study, data for golf course design were researched using LiDAR intensity. Consequently, a sectional registration data of a golf course was generated efficiently.

• 디지털융복합연구
• /
• 제11권2호
• /
• pp.407-412
• /
• 2013

레저용 선박의 디자인 트렌드는 해양문화와 선박의 연관관계 속에서 발전되어 왔다. 본 연구에서는 선진 해양문화를 보유한 국가들의 레저선박 디자인 트렌드를 분석하였으며, 국내 고객들의 감성을 반영할 수 있는 전기 보트 디지털 디자인 프로세스를 제안하였다. 본 연구의 결과는 경제위기의 여파를 겪고 있지만 친환경 레저 산업 분야에서 새로운 기회를 맞고 있는 국내 중소형 조선 산업 발전에 도움이 될 수 있을 것으로 생각된다.

• Molecular & Cellular Toxicology
• /
• 제1권3호
• /
• pp.143-148
• /
• 2005

This review aims to show that industrial sustainable chemistry, minimizing or reducing the ecological impacts by the chemicals, is not an emerging trend, but is already a reality through the application of 'White Biotechnology' such as 'green' chemistry and engineering expertise. A large number of current industrial case studies are presented, as well as new developments from the chemical industry. The case studies cover new chemistry, new process design and new equipment. By articulating the requirements for industrial application of sustainable chemistry, this review also seeks to bridge any existing gap between academia and industry regarding the R & D and engineering challenges needed to ensure green chemistry research enables a more sustainable future chemical industry considering eco-toxicological impacts.

• Journal of Electrical Engineering and Technology
• /
• 제12권6호
• /
• pp.2089-2098
• /
• 2017

Microgrid is a convenient, reliable, and eco-friendly approach for the integration of Distributed Generation (DG) sources into the utility power systems. To date, AC microgrids have been the most common architecture, but DC microgrids are gaining an increasing interest owing to the provision of numerous benefits in comparison with AC ones. These benefits encompass higher reliability, power quality and transmission capacity, non-complex control as well as direct connection to some DG sources, loads and Energy Storage Systems (ESSs). In this paper, main challenges and available approaches for the protection of AC and DC microgrids are discussed. After description, analysis and classification of the existing schemes, some research directions including coordination between AC and DC protective devices as well as development of combined control and protection schemes for the realization of future hybrid AC/DC microgrids are pointed out.