• Bulletin of the Korean Chemical Society
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• 제31권9호
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• pp.2453-2458
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• 2010

Photochemical studies of N-[(trimethylsilyl)alkyl]saccharins were carried out to investigate their photochemical behavior. Depending on the nature of the substrate and the solvent system employed, reactions of these substances can take place by either SET-promoted silyl migration from carbon to either the amide carbonyl or sulfonyl oxygen or by a N-S homolysis route. The results of the current studies show that an azomethine ylide, arising from a SET-promoted silyl migration pathway, is generated in photoreactions of N-[(trimethylsilyl)methyl]saccharin and this intermediate reacts to give various photoproducts depending on the conditions employed. In addition, irradiation of N-[(trimethylsily)ethyl]saccharin produces an excited state that reacts through two pathways, the relative importance is governed by solvent polarity and protic nature. Finally, photoirradiation of N-[(trimethylsilyl)propyl]saccharin in a highly polar solvent system comprised of 35% aqueous MeOH gives rise to formation of a tricyclic pyrrolizidine and saccharin that generated via competitive SET-promoted silyl transfer and $\gamma$-hydrogen abstraction pathways.

• 한국실내디자인학회논문집
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• 제21권4호
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• pp.21-30
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• 2012

Interior space of modern society has a request for non-functional considerations as well as a need for function. French sociologist Jean Baudrillard defined this phenomenon as a dialectical relationship between the functional system and the non-functional system in his book "The System of Objects". The main goal of interior design is the pursuit of non-functional aspects which can satisfy emotional needs of human being without ignoring functional side. This means that designer should exceed the limitation of the functional system and overcome it by his own idea and method. Under this recognition, this paper tried to understand how Shiro Kuramata and Takashi Sugimoto accomplished the overcoming successfully. Sugimoto breaks through mechanical monotony introducing the non-functional objects into the functional system. His objects have power and form of the nature. They also shows traces of manufacture and labor. They works as media transferring old life and values. Sugimoto sometimes adopts the non-functional system such as collection, so it reveals time of collecting and arrangement of various objects. In contrast to Sugimoto, Kuramata erased the form of functional object and turned over the everydayness of the functional system. Instead, aesthetical phenomena substitutes form. Having doubts about the geometrical order of functional system, he opened a discourse for its meaning and limitation. However they have something in common which works as a blueprint for establishing subject's discourse. This discourse is comprised of their own memories of scenes. These subjects' discourse institute worlds through their design works based on each methodology. From the Heideggerian point of view, the worlds offer a foundation which allows the establishment of art in interior design.

• 한국표면공학회:학술대회논문집
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• 한국표면공학회 2012년도 추계총회 및 학술대회 논문집
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• pp.61-62
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• 2012

한국기계연구원에서 진행되고 있는 자연의 기능성 표면에 대한 연구를 소개한다. 특히 연잎의 자기세정효과와 나방눈의 반사방지 효과를 함께 가지는 다기능성 유리표면의 제작공정과 성능을 소개하고 향후 전망에 대하여 논한다.

• 한국고분자학회지:고분자과학과기술
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• 제22권5호
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• pp.460-466
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• 2011

• 한국섬유공학회:학술대회논문집
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• 한국섬유공학회 2003년도 봄 학술발표회 논문집
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• pp.1-4
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• 2003

The design and synthesis of new polymers is desirable to obtain materials with novel physical properties. Generally, these new polymers have their well-defined nature with the number of functional groups, molecular weight, polydispersity, and the presence or absence of branching being precisely controlledl. These polymers are mainly synthesized by living polymerizations to control of their structures. Among of various living polymerization Atom transfer radical polymerization (ATRP) has been a field of intensive research in recent years1. (omitted)

• 한국막학회:학술대회논문집
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• 한국막학회 1995년도 제3회 심포지움 (분리막 연구의 최신동향)
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• pp.39-55
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• 1995

Modified polycrylonitrile(PAN) membranes were prepared by emulsion or emulsifier-free emulsion polymerization technique. Separation capacity was determined at several operating temperatures(25, 40, 55 and 70 $^{\circ}$C) to dehydrate 56wt% pyridine aqueous solution through modified PAN membranes having different functional groups. All these PAN-based membranes were selective toward water to different degrees depending on the nature of functional groups present in the membranes. Pervaporation characteristics of PAN-based membranes are so different and classified into three categories depending on the type of the functional groups in PAN copolymers. Among PAN-based membranes, the in-situ complex membranes show the best separation capacity over the operating temperatures.

• 센서학회지
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• 제32권1호
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• pp.31-38
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• 2023

Three-dimensional (3D) micro/nanostructures based on soft elastomers have received extensive attention in recent years, owing to their potential and advanced applicability. Designing and fabricating 3D micro/nanostructures are crucial for applications in diverse engineering fields, such as sensors, harvesting devices, functional surfaces, and adhesive patches. However, because of their structural complexity, fabricating soft-elastomer-based 3D micro/nanostructures with a low cost and simple process remains a challenge. Bio-inspired designs that mimic natural structures, or replicate their micro/nanostructure surfaces, have greatly benefited in terms of low-cost fabrication, scalability, and easy control of geometrical parameters. This review highlights recent advances in 3D micro/nanostructures inspired by nature for diverse potential and advanced applications, including flexible pressure sensors, energy-harvesting devices based on triboelectricity, superhydrophobic/-philic surfaces, and dry/wet adhesive patches.

• 한국지리정보학회지
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• 제19권1호
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• pp.120-140
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• 2016

본 연구의 목적은 효율적인 녹지의 계획 및 관리방향 설정을 위한 기초자료 제공을 위해 녹지의 기능적 평가를 실시하는 것이다. 이를 위해 연구대상지를 대구광역시 공원형 녹지로 설정하였으며, 녹지의 기능은 자연생태적, 환경조절적, 이용적 기능으로 제한하였다. 선행연구 고찰 및 전문가 설문조사에 의한 MCB 분석을 통해 13개 지표를 선정하였으며, 전문가 설문조사에 의한 AHP 분석을 통해 기능별 지표의 가중치를 설정하였다. 공원형 녹지의 기능별 평가 결과를 살펴보면, 자연생태적 기능 평가에서는 냉천유원지, 대구체육공원, 달창유원지의 녹지 평가 점수가 80점 이상으로 높게 분석되었다. 환경조절적 기능 평가의 경우 복현공원, 만촌공원, 천내공원 등 15개 녹지의 평가 점수가 75점 이상으로 높게 나타났고, 이용적 기능 평가에서는 수성공원, 달성공원, 월배공원 등 11개 공원형 녹지의 점수가 80점 이상으로 높게 평가되었다. 이러한 분석결과들은 향후 공원형 녹지의 신규 조성, 지속적인 관리 및 리모델링이 요구될 경우 효율적인 기초자료 및 가이드라인으로 활용될 수 있을 것으로 판단된다.

• 한국전통조경학회지
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• 제38권2호
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• pp.118-124
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• 2020

본 연구는 20세기 대표적인 생태예술가인 패트리샤 요한슨의 설계철학과 기능적 생태예술 작품들을 분석함으로써, 생태미학적인 특징을 고찰하고 생태조경설계에 있어서의 시사점을 모색하는 것을 목적으로 하였다. 이를 위해 자연과의 공생, 종다양성 확보, 생태계 서식지 복원 등의 기능적인 목적과 예술성, 지역성을 통합적으로 표현한 작품으로 알려진 페어파크 습지, 멸종위기 정원, 페타루마습지공원, 슈가하우스 드로우 등 네 개의 작품을 대상으로 관련문헌 고찰 및 현장방문의 방법을 통해 자료를 수집하여 분석하였다. 그 결과, 첫째 요한슨의 작품은 형태와 기능 또는 예술과 생태와의 결합을 통해 '기능적인 예술작품', '예술적인 인프라'를 창조하였으며, 둘째, 지역 고유의 생태계 및 역사와 문화특성에 대한 존중을 바탕으로 역사성과 지역성을 예술적이고 상징적으로 표현하였다. 셋째, 요한슨은 예술작품의 공공성을 통해 인간과 자연을 연결시키고 지역사회와 미래 세대의 자연과 환경보호에 대한 인식을 고취시키고자 하였다. 예술가의 창의적이고 독특한 미학적인 요소를 이용하여 생태설계의 영역을 완성한 요한슨의 조경설계는, 사람들에게 자연의 질서와 역사를 체득하는 경험을 제공할 뿐만 아니라 지역민의 적극적인 참여와 애착을 바탕으로 지속가능한 디자인을 실천한다는 점에서 조경분야의 생태설계에 있어 많은 시사점을 준다.

• 한국컴퓨터정보학회논문지
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• 제24권3호
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• pp.65-75
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• 2019

Non-Functional Requirements (NFR) play a crucial role during the software development process. Currently, NFRs are considered more important than Functional Requirements and can determine the success of a software system. NFRs can be very complicated to understand due to their subjective manner and especially their conflicting nature. Self-adaptive systems (SAS) are operating in dynamically changing environment. Furthermore, the configuration of the SAS systems is dynamically changing according to the current systems context. This means that the configuration that manages the trade-off between NFRs in this context may not be suitable in another. This is because the NFRs satisfaction is based on a per-context basis. Therefore, one context configuration to satisfy one NFR may produce a conflict with another NFR. Furthermore, current approaches managing Non-Functional Requirements trade-off stops managing them during the system runtime which of concern. To solve this, we propose fragmentizing the NFRs and their alternative solutions in form of Multi-entity Bayesian network fragments. Consequently, when changes occur, our system creates a situation specific Bayesian network to measure the impact of the system's conditions and environmental changes on the NFRs satisfaction. Moreover, it dynamically decides which alternative solution is suitable for the current situation.