• 한국의상디자인학회지
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• 제22권4호
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• pp.115-125
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• 2020

Rider jackets were once reserved for military uniforms but have become an important styling item in recent fashion trends. The design characteristics of the rider jacket are rooted in symbolism, and the image associated with a rider jacket is in line with the challenging of authority and being a member of the rebellious youth subculture. Usually, young people with anti-social tendencies wore jackets, and some styles were used as a medium to express their emotional homogeneity, and they received favorable responses as the items represented them. The design characteristics of a rider jacket can be largely divided into resistance against the older generation, violence, challenging cultural norms, sexuality, and resistance, as well as embodying violent characteristics, including strength, courage. and male chauvinism. The reason for the development of these challenging characteristics are disparagement and anger of the lower class, who were excluded from mainstream society. Rider jackets can be viewed negatively due to the kind of message it is conveying against mainstream society. Among the sexual features were leather pants, short-length leather rider jackets, glossy metal accessories, and belt buckles, which also highlighted gay and decadent images that came to be associated with the jackets. The drapery created various kinds of wrinkles according to the way of dressing, and it had beautiful expressiveness while serving to express the body more beautifully. Drapery can be classified according to the aesthetic characteristics or expression techniques, and if the type of drapery is classified according to the morphological characteristics, it can be classified into variable and fixed structures, depending on whether the part to which the drapery is applied is fluid or not. In other words, it depends on the dressing method or the intention, and if the drapery technique is directly applied to the garment or is attached to the form. This fashion design proposal may have the greatest significance in that it sought to propose a new style incorporating a drapery technique with a strong feminine image to a rider jacket, which traditionally was associated with a masculine image.

• Journal of information and communication convergence engineering
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• 제20권1호
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• pp.22-30
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• 2022

The reinforcement learning algorithm has proven its potential in solving sequential decision-making problems under uncertainties, such as finding paths to route data packets in wireless sensor networks. With reinforcement learning, the computation of the optimum path requires careful definition of the so-called reward function, which is defined as a linear function that aggregates multiple objective functions into a single objective to compute a numerical value (reward) to be maximized. In a typical defined linear reward function, the multiple objectives to be optimized are integrated in the form of a weighted sum with fixed weighting factors for all learning agents. This study proposes a reinforcement learning -based routing protocol for wireless sensor network, where different learning agents prioritize different objective goals by assigning weighting factors to the aggregated objectives of the reward function. We assign appropriate weighting factors to the objectives in the reward function of a sensor node according to its hop-count distance to the sink node. We expect this approach to enhance the effectiveness of multi-objective reinforcement learning for wireless sensor networks with a balanced trade-off among competing parameters. Furthermore, we propose SDN (Software Defined Networks) architecture with multiple controllers for constant network monitoring to allow learning agents to adapt according to the dynamics of the network conditions. Simulation results show that our proposed scheme enhances the performance of wireless sensor network under varied conditions, such as the node density and traffic intensity, with a good trade-off among competing performance metrics.

• Nuclear Engineering and Technology
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• 제53권7호
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• pp.2418-2425
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• 2021

Monazite is a phosphate mineral that contains thorium (Th) and rare earth elements. The Th concentration in monazite can be as high as 500 ppm, and it has the potential to be used as fuel in the nuclear power system. Therefore, this study aimed to conduct the techno-economic analysis (TEA) of Th extraction in the form of thorium oxide (ThO₂) from monazite. Th can be extracted from monazite through an alkaline fusion method. The TEA of ThO₂ production studied parameters, including raw materials, equipment costs, total plant direct and indirect costs, and direct fixed capital cost. These parameters were calculated for the production of 0.5, 1, and 10 ton ThO₂ per batch. The TEA study revealed that the highest production cost was ascribed to installed equipment. Furthermore, the highest return on investment (ROI) of 21.92% was achieved for extraction of 1 ton/batch of ThO₂, with a payback time of 4.56 years. With further increase in ThO₂ production to 10 ton/batch, the ROI was decreased to 5.37%. This is mainly due to a significant increase in the total capital investment with increasing ThO₂ production scale. The minimum unit production cost was achieved for 1 ton ThO₂/batch equal to 335.79 $/Kg ThO₂.

• 토지주택연구
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• 제13권3호
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• pp.21-38
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• 2022

본 연구에서는 한국고용정보원의 청년패널조사(YP2007) 4-14차(2010~2020년) 자료를 이용하여 청년층의 주거 관련 특성 현황들을 정리해보고, 심층적으로 주거의 특성들(자가 여부, 아파트 거주 여부)에 미치는 영향요인을 추정하였다. 분석 결과, 남성, 고학력층, 취업한 청년층은 자가 및 아파트에 거주할 가능성이 높지만, 이들 중 상당수는 부모와 동거중인 것으로 보인다. 반면, 경제적으로 독립한 청년층의 경우, 전/월세 형태의 입주형태와 다세대, 빌라, 오피스텔 등의 주택에 거주하는 경우가 많은 것으로 추정된다. 청년층이 주거, 일자리, 결혼 등의 문제로부터 벗어나 제 역할을 할 수 있는 여건을 마련하기 위해서는 주택 마련 및 임대 등에 소요되는 비용이 청년층의 경제적 상황과 수준 등에 맞게 맞추어져야 하겠다.

• 인간식물환경학회지
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• 제23권6호
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• pp.667-681
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• 2020

Background and objective: Recently, there has been an increasing need for relaxation and familiarity with nature in residential and living spaces faced daily by urban residents, leading to a growing social interest in urban gardens. The aim of this study was to determine how gardens in a city provide physical and social benefits, comparing cases in Korea and overseas. Methods: We used the keywords "garden" and "city" for Korea, and "urban," "garden," and "green" for overseas. We then determined the Korean and overseas research trends in urban gardens by analyzing 63 Korean and 90 overseas articles deemed suitable for this study. Results: As to the types of urban gardens, the most significant type was community gardens, both in Korea and overseas (30.2% and 48.6%, respectively), followed by rooftop gardens in Korea (22.2%) and kitchen gardens overseas (22.2%). Due to the narrow and complex urban structure in Korea, people focus on using rooftop, wall, and alley spaces, and tend to arrange container-type flexible gardens. Overseas there has been a focus on promoting health and reducing food inequality through allotment and kitchen gardens, and a tendency to use a larger area as a fixed form than Korea. In addition, it was found that gardens in urban areas had a positive effect on urban biodiversity. Conclusion: To sum up, gardens in Korea are close to living spaces, and gardens overseas influence the ecosystem with an emphasis on food production. Therefore, creating urban gardens is a method of urban regeneration with a high utility that goes beyond mere food production, both in Korea and overseas, providing comprehensive benefits for the environment (37.73%) and society (62.27%). As such, continuous research on this area of study is needed to create policy guidelines for Korea.

• 열처리공학회지
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• 제35권2호
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• pp.74-81
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• 2022

This study aims to mitigate the microstructural heterogeneity arising from the manufacture of magnesium alloy plates using the twin roll casting (TRC) process. Homogenization was introduced through hot rolling and heat treatment, followed by confirmation of observed changes in the microstructure. Following the TRC process, the hot rolled 2mm plate exhibited a dendritic cast structure tilted in the roll rotation direction, while central segregation were developed. This nonuniform structure and central segregation disappeared upon heat treatment, followed by recrystallization to form uniform and fine grains. Abnormal grain growth (AGG) was observed over the course of heat treatment; grains exhibiting AGG occupied up to 75% of the total area after having held the sample at 400℃ for 64 h. The formation of coarse grains was also observed during heat treatment at 340℃ over a relatively long duration, though the maximum grain size was significantly smaller than that corresponding to the heat treatment at 400℃. AGG in the 400℃ heat treatment occurred because of movement of the grain boundary, which had been fixed prior as a result of the grain boundary fixing effect of the precipitation phase. The re-dissolution of the Ca₂Mg₅Zn₅ precipitated phase over the long duration of the high-temperature annealing process caused the surrounding grains to disappear and regrow.

• 한국정보통신학회:학술대회논문집
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• 한국정보통신학회 2021년도 춘계학술대회
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• pp.444-446
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• 2021

모바일 애드혹 네트워크(Mobile Ad-hoc NETwork, MANET)는 고정 네트워크에 종속되지 않은 이동 노드들로 이루어지고, 자체 네트워크를 형성할 수 있는 특징을 가져서 많은 분야에 활용되고 있다. 모바일 애드혹 네트워크에 적용되는 이동 모델은 활용 목적에 따라 다양하게 적용할 수 있다. 랜덤 이동 모델은 간편하고 구현하기가 쉽다는 장점이 있어서 가장 많이 활용되고 있다. 모바일 애드혹 네트워크에서 개별 노드들은 독립적으로 이동한다고 가정한다, 랜덤 이동 모델은 이러한 독립성을 표현하기에는 좋은 모델이다. 그러나, 개별 노드들의 무작위 속성으로 전체 노드 특성을 표현하기에는 부족하다. 본 논문은 MANET에서 적용 가능한 확률적 이동 모델을 제한한다. 제안 확률 이동 모델과 랜덤 이동 모델과 비교한다. 제안 이동 모델을 라우팅 프로토콜에 적용하여 에너지 소비 효율 측면에서 향상된 특성을 보임을 확인한다.

• 수완나부미
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• 제2권1호
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• pp.95-110
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• 2010

까쭈(Ca trù)란 베트남에 뿌리를 둔 민속음악의 한 종류이다. 까쭈에는 시가 아주 중요한 위치를 차지한다. 그렇기 때문에 많은 음악 연구자들은 까쭈는 '음악시'라고 말한다. 이러한 특징은 노랫말에서 분명하게 볼 수 있는데, 까쭈의 주된 가락이면서 독립된 시의 쟝르이기도 한 것이다. 베트남 민속음악 가락 중에서 까쭈는 유일하게 생겨난 것이어서 시라는 것이 '말하는 노래'인 것이다. 이러한 것은 베트남의 민속음악(극)이라고 할 수 있는 쩨오, 꽌호, 핫잠 등과 같은 곳에서는 유사한 현상을 찾아볼 수 없다. 또한 까쭈의 가락이 특정한 일부 가락에서 멈추지 않고, '말하는 노래'의 수량이 추천 개이며, 수 세기를 통해서 창작되어 왔다. 이 글은 까쭈 장르의 구조, 운과 가락, 내용 등에 대해서 연구하여 이 '말하는 노래'가 완전한 시라는 것을 증명하고자 하였다. 이를 통해 '말하는 노래'는 베트남 만의 고유한 것이며, 차후 신시운동에서 8행시를 만들어 내는 기반이 되었다고 볼 수 있다.

• 영어영문학
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• 제55권5호
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• pp.865-883
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• 2009

The mock-heroic, "the single most characteristic and individual literary form of the neoclassical era," as Brean Hammond puts it, epitomizes the process of the "novelization" of the 18th-century British culture. Bakhtin mentions that when the novel reigns supreme, almost all the remaining genres are "novelized"; Hammond borrows the term "novelization" from Bakhtin and uses it as a "shorthand way of referring to the cultural forces that render epic anachronistic." Indebted to Hammond's apprehension of novelization, this paper reads Alexander Pope's Rape of the Lock in the context of novelization, particularly focusing on 'probability,' 'contemporaneity' and 'domesticity,' three important signatures of the novelization of the 18th-century British culture. First, Sylph as a counterpart of god in epic is presented in The Rape of the Lock just as a helpless, fictional and irrelevant thing that hardly affects the empirical world. It indicates how the mock-epic 'mocks' the classical world of 'epic' and stands closer to the world of the novel. Second, Pope's poem displays an accurate picture of the author's contemporary reality, a capital concern of the novel, such as imperialism, consumer society, commodity fetishism, or reification. Lastly, The Rape of the Lock lays out the construction of modern gender ideology, another quintessential interest of the novel, particularly with the fixed female image of a coquette. It efficiently silences and nullifies Belinda, a typical coquette, who stands as a threatening force to the ascendent domestic ideology.

• 스마트미디어저널
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• 제13권2호
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• pp.62-67
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• 2024

시청 기기의 기술 발전과 COVID-19로 인해 기존 영화관에서의 영화관람 방식 및 방송사의 고정된 TV 시청 방식에서 유무선 인터넷을 이용한 자유로운 OTT 시청 방식 선호로 옮겨감에 따라 많은 OTT 전용 콘텐츠가 제작 및 유통되고 있다. 그에 따라 OTT 시청자의 데이터를 활용하는 산업의 경쟁력이 중요하게 되었다. 하지만 OTT 콘텐츠를 제공하는 업체가 아닌 제삼자 업체는 OTT 시청자 데이터의 확보에 어려움을 겪고 있다. 본 논문에서는 기존 시청자 데이터 확보의 단점을 극복한 방법으로 OS와 시청 기기의 성능에 영향을 미치지 않는 웹 브라우저 환경을 채택하여 Web API를 활용한 OTT 시청 데이터 확보 에이전트를 개발하여 음성과 영상데이터를 추출하는 방법을 제안하여 시청 데이터가 필요한 제삼자 업체가 활용할 수 있는 방안을 제시하고자 한다.