“類似性에 의한 統一性”과 “複合性 안의 統一性”으로 바라본 建築 美的 價値

추승연 대한건축학회 2004 대한건축학회논문집 Vol.20 No.9

This research tries to study the aesthetic value of architecture as a part of the design methods, this takes places from the viewpoint of "Unification through Similarity" and "Unification in Complexity" under the frame of the Gestalt Psychology Unification can be achieved In a design by the combination of the four components, such as form, scale, texture and color, through the similarity of one or more of these components There are three ways 10 which "Unification 10 Complexity" relates to architecture through deviation from axis, and through multi-interpretation and rhythm As we see from this research, It IS recommended that both principles "Unification through Similarity" and "Unification m Complexity" are used together m a design to create a simultaneously ordered- and tensioned-architectural effect, complementing each others elements Finally, the effective use of these principles results in an aesthetically pleasing design, linking the separate elements into a cohesive whole

Design Tool을 이용한 음계 비례론의 건축실무 적용에 관한 연구

추승연 대한건축학회 2004 대한건축학회논문집 Vol.20 No.8

Throughout the architectural history, there has been a quest for a formal ordering-system that facilitates aesthetic requirements of a design. The specific formal ordering-systems such as axes, grids, symmetry, proportion, etc., can help to maintain unity, to avoid chaos and then to achieve harmony in a design. Of those, proportion systems have been considered as a basis for answering how harmony is achieved in an architectural design. In particular, harmonic proportions derived from musical scales played a central role in the minds and designs of Renaissance theorists and architects. In this paper, a new review of the musical proportion is provided and a design tool is proposed, which generates and evaluates on architectural designs, using the analytical proportion of music in a CAAD (Computer-Aided Architectural Design) system. This tool is implemented in the AutoCAD environment and is applied to the "Museum der Moderne" in Salzburg, Austria. In short, the proposed design tool shows a formal and explicit way to integrate an architectural theory into a CAAD system.

해안식물의 유리아미노산과 질소함량

추연식,도정화,송승달 동의대학교 기초과학연구소 2000 基礎科學硏究論文集 Vol.10 No.1

Thirty two species of coastal plants (mainly halophytes) were investigated for their free amino acids and the total and Water-soluble nitrogen contents in leaves. All plants except some species (e.g. Scutellaria and Linaria) contained proline, but only Ageratum, Tetragonia and Raphanus in rather high amounts, that it can be thought to serve as a cytoplasmic osmolyte. In some plant species (Euphorbia, Glehnia, Peucedanum, Raphanus and monocotyledonous Carex and Zoysia), however, hydroxyproline (OH-Pro) rather than proline were accumulated to a considerable extent. The concentrations of total free amino acids were low in Aster tripolium, Linaria, Lysimachia, Plantago, Rumex, Vitex and especially in the members of the Chenopodiaceae and Crassulaceae. Marked differences also occurred in the nitrogen levels. Aizoaceae, Chenopodiaceae, Convolvulaceae, Cruciferae, Euphorbiaceae and Leguminosae usually showed high values of total and soluble amino nitrogen, while the opposite was true for most of the Cyperaceae, Gramineae, Lamiaceae, Plantaginaceae, Scophuriaceae, and Verbenaceae. The free amino acids in the investigated plant species contributed very little to the nitrogen content, but in plants of Euphorbia, Messerschmidia and Orostachys, their amino acid-N made up for 25∼30% of the total nitrogen. In conclusion, only a few cases did proline known as compatible solute constitute a significant proportion of the free amino acid pool in coastal plants.

보상형 PID 재어기를 이용한 DC-서보모터의 속도 제어 시뮬레이션

박윤명,장종승,추연규,임영도 東亞大學校 附設 情報通信硏究所 1999 情報通信硏究所論文誌 Vol.7 No.1

본 논문은 Fuzzy Logic Controller를 이용하여 입력을 보상한, 보상형 PID 제어기를 제안한다. 이 제어기를 사용하여 DC-서보모터의 속도제어 특성을 조사하고, 단순 PID 제어기와 비교하여 제안한 제어기의 성능을 평가하였다. 성능 평가 방법은 MATLAB을 이용하여 DC-Servo Motor와 유사한 가상 플랜트를 설정하고, 부하 및 무부하시의 보상형 PID제어기와 단순 PID 제어기의 속도제어 성능을 모의 실험하였다. 모의 실험 결과 보상형 PID 제어기의 성능이 더 우수한 것으로 나타났다.

NaOH 첨가에 따른 음식물찌꺼기 고온 혐기성 산발효

안철우,이철승,서종환,박진식,문추연,장성호,김수생 한국환경농학회 2004 한국환경농학회지 Vol.23 No.4

본 연구는 음식물찌꺼기의 혐기성 산발효에 있어 여러 조건들 중 온도가 효율적인 가수분해와 산발효에 미치는 영향을 검토하기 위해 고온(55℃)과 중온(35℃)에서 각각 실험을 수행하여 다음과 같은 결론을 얻을 수 있었다. 음식물찌꺼기의 혐기성 산발효시 산생성 효율을 높이기 위한 전처리 과정으로 음식물찌꺼기에 NaOH를 투입한 결과 가수분해효율을 표현한 가용화 정도(Solubilization)가 0.01 g NaOH/g TS이하로 투입된 경우 0.01 mgSCOD_(prod)/mgICOD_(inf)이하를 나타내었으나, 0.05 g NaOH/g TS이상을 투입했을 때는 0.07~0.09 mgSCOD_(prod)/mgICOD_(inf)로 나타났다. 따라서 음식물찌꺼기에 NaOH를 투입하여 효율적인 가수분해가 이루어지기 위해서는 g TS당 0.05 g이상의 NaOH가 투입되어야 할 것으로 판단된다. 음식물찌꺼기를 NaOH로 전처리한 후 고온(55℃) 산발효를 실시했을 때 0.05 g NaOH/g TS 투입시 SCOD의 증가치 3,800 mg/L로 최대의 가용화와 산생성에 효과적인 pH 5.95를 얻을 수 있었다. 0.05 g NaOH/g TS를 투입하여 중온(35℃)에서 산발효를 실시한 경우와 비교하여 SCOD 증가치가 약 5배 정도 높았고, 최대 가용화에 이르는 시간도 중온의 2/3 정도로 짧아 음식물찌꺼기의 가용화에는 고온이 효과적인 것으로 나타났다. NaOH 0.05 g NaOH/g TS로 전처리된 음식물찌꺼기의 산발효 결과 고온(55℃) 및 중온(35℃)에서 각각 반응시작 후 72시간에 12,600 mg/L, 120tlrksdp 9,800 mg/L의 VFA농도를 나타내어 동일기질을 이용하여 산발효를 실시했을 때 중온보다는 고온에서 미생물의 활성증대와 유기물의 가수분해가 촉진되어 VFA생성이 효율적인 것으로 판단되었다. 고온에서 NaOH에 전처리된 음식물찌꺼기를 산발효 시켰을 때 VFA가 가장 높았던 시점을 기준으로 VFA의 조성을 조사한 결과 acetic acid가 45.9%, butyric acid가 26.7%, propionic acid가 13.9% 등으로 총 유기산 발생량의 86.5%를 차지하였다. This study showed that thermophilic anaerobic acid fermentation of food wastes had an enhanced hydrolysis capability and improvement of acidification efficiency. Influence of pH on the anaerobic hydrolysis and acidogenesis was investigated to determine the proper alkalinity in the thermophilic fermentation of food wastes. The results of putting NaOH as alkali to evaluate hydrolysis and acid fermentation efficiency in acid fermentation process of food wastes showed that the food wastes pretreated with 0.05 g NaOH/g TS had the maximum 12,600 mg/L of VFAs concentration during HRT 3 days in 55℃ hermophilic condition and the maximum 9,700 mg/L of VFAs concentration during HRT 5 days in 35℃ mesophilic condition. The accomplishment of high VFAs concentration resulted from that the main component of food wastes such as cellulose, lignin and etc. is performed active chemical decomposition by alkali in thermophilic condition. The major components of VFAs produced from the thermophilic acid fermentation process of food wastes were the short chain fatty acids such as acetic acid, butyric acid, and propionic acid.

Automation of Architectural Design Process and Robotic System in Building Construction using Object-Oriented Design

Seung-Yeon Choo,Sang-Min Park 한국멀티미디어학회 2009 멀티미디어학회논문지 Vol.12 No.12

Automation of Architectural Design Process and Robotic System in Building Construction using Object-Oriented Design

Choo, Seung-Yeon,Park, Sang-Min Korea Multimedia Society 2009 멀티미디어학회논문지 Vol.12 No.12

This paper describes an automation of architectural design processes and the direction between this automation and robotic system in building construction using the concept of the object-oriented design in architecture. The research starts from the premise that many computer-aided design systems are mostly aimed at serving as drawing tools which are used only after a design formal solution has already been established by the architect. If the computer is well applied to the architectural design process, many positive things such as standardization of design detail, increasing productivity and collaboration, minimizing construction costs etc. can be done. To support an early design solution in the computer-based environment, the proposed automation was developed and tested in a real building project, using the object-oriented design concept such as product model. This design automation gives various design alternatives from the early design phase to the final stage of design details, according to musical harmony. This paper shows how architectural design process can be automated and how the data of the applied architectural design can be integrated into product model environment, in relation to robotic system in building construction.

Effects of Cognitive-Motor Interference on Cognitive Tasks Requiring Different Types of Concentration During Preferred and Fast Walking in Stroke Patients

Yeon-seung Choo,Mi-sun Kim,Jong-duk Choi 한국전문물리치료학회 2014 한국전문물리치료학회지 Vol.21 No.4

The purpose of this study was to examine the effect of three cognitive tasks on gait at a preferred walking speed, and at a fast speed, using dual-task methodology. A total of 29 stroke patients participated in the study. All 29 subjects performed 2 motor tasks (10-meter walk task and timed up and go task each at a preferred and a fast speed) and three cognitive tasks [Stroop, word list generation (WLG), serial subtraction (SS)] under dual-task conditions [cognitive-motor interference (CMI)] in a randomized order. Gait speeds were measured in six different conditions. A repeated-measure analysis of variance was employed to compare the results of the Stroop training, WLG, and SS tasks during preferred and fast walking. A Bonferroni adjustment use for post hoc analysis. The level of statistical significance was set at α=.05. A CMI effect occurred for performance of a 10-meter walking task at two different speed and a cognitive task (p<.05). Stroop had a significantly greater effect than SS and WLG (p<.05). The timed up and go task was affected when performed with fast walking speed during Stroop cognitive task (p<.05), but was not affected if performed with preferred walking speed during a cognitive task (p>.05). This study showed that CMI of Stroop can be used as a rehabilitation program for stroke patients.

돔 한스 반 데어 란의 비례론에 기초한 비례생성 시스템에 관한 연구

추승연(Choo Seung Yeon) 한국주거학회 2004 한국주거학회 논문집 Vol.15 No.5

비트루비우스(Vitruvius)에서 벤츄리(Venturi)에 이르기까지 많은 건축사가(建榮史家) 또는 건축가(建築家)들이 건축원리에 대한 각자의 규범적 태도를 글로써 밝혀왔다. 이러한 규범적 내용 중 비례이론은 서양건축에 있어 건축미(建築美) 비밀로 간주되어, 조화로운 건축물이 꼭 갖추어야 할 덕목중의 하나로 인식되었다. 현대건축에서 비교적 근대 비례시스템이라 불릴 수 있는 것으로 르 꼬르뷔지에의 모될로르와 반 데어 란의 플라스틱 넘버를 들 수 있다. 모될로르는 현재까지 아주 제한된 성공밖에 거두지 못했는데, 이는 피보나치 수열에 기초한 수치들이 커졌을 때 단위의 배수관계가 거의 형성되지 않는다는 사실에 기인한다. 반면에 플라스틱 넘버는 모될로르의 결점들을 보완할 수 있는 매력적인 수열을 가지고 있다. 이에 본 연구는 반 데어 란의 비례시스템 분석을 통하여 유도된 수열규칙이 건축디자인과 관련되어 직접적으로 적용되어 질 수 있는 CAAD시스템을 제안한다. 본 시스템의 초점은 반 데어 란의 비례이론이 어떻게 컴퓨터 언어로 변환 및 CAAD시스템에 적용되어, 실질적인 건축 실무행위에 있어 컴퓨터가 디자인 도우미로서 역할을 수행할 수 있겠는가하는 것이다. 연구의 결과, 사용자는 이러한 시스템을 사용함으로써 반 데어 란의 비례시스템을 자신의 디자인에 손쉽게 적용할 수 있으며, 이는 복잡한 치수관계로 구성된 비례시스템의 건축실무 활용으로 발전되어질 수 있을 것으로 사료된다.

가려짐에 강건한 포즈 추정을 위한 이미지 합성 기반 다중 겹침 데이터셋

추연승(Yeon Seung Choo),김현식(Hyun-Sik Kim),박용석(Yong-Suk Park) 한국통신학회 2022 한국통신학회 학술대회논문집 Vol.2022 No.11