• Title/Summary/Keyword: rhythm of light

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Endogenous Rhythms of $CO_2$ Assimilation, Stomatal Conductance and Soluble Carbohydrate Concentration during Grain Filling in Rice (벼 등숙기간중 $CO_2$ 동화율, 기공전도도 및 수용성 탄수화물 농도의 내생 리듬)

  • 현동윤
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.40 no.5
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    • pp.556-561
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    • 1995
  • Persisent circadian rhythms in carbon assimilation, stomatal conductance and soluble carbohydrate concentration were investigated during grain filling period in rice plant transferred from a natural photoperiod to constant conditions. A weak rhythm in photosynthesis, measured as carbon assimilation, and stomatal opening, as conductance to water vapor, with a period of approximately 24-hours, occurred under constant condition. Carbon assimilation and stomatal conductance reached maximum values near noon and minimum values near midnight during the early stage (until 72-hour) after transferring to constant condition, and then the amplitude and phase were changed slowly, the rhythms with little damping, reaching maximum values near midnight and minimum values near noon during 96~120-hours after transferring. However, photosynthesis in plants grown for 14days after anthesis under constant moderate light(day and night) did not oscillated in constant condition unlike plants grown under a cycle of light and darkness. These phenomenon was observed in soluble carbohydrate concentration in flag leaves as well. Evidences from several approaches indicate that endogenous rhythms of $CO_2$ assimilation, stomatal conductance and soluble carbohydrate concentration are closely couped with each other and particularly important to plants, which depend on the natural day-night cycle as a external signal.

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A Study on the Expression of Bergsonian Duration in Steven Holl's Stretto House (스티븐 홀의 스트레토 하우스에서 베르그송의 지속의 표현에 관한 연구)

  • Kim, Young-Hee
    • Korean Institute of Interior Design Journal
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    • v.19 no.1
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    • pp.85-93
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    • 2010
  • This study aimed to show the possibility of approaching Steven Holl's Stretto House as a vital space identical to the flow of our consciousness through Bergson's philosophy of life by understanding the expression of Bergsonian duration in the house. For the Purpose of this study, Bergson's concept of aesthetic duration was considered and duration in the Stretto House design process was analyzed, Based on the study's findings, duration according to Bergson's expression of reality in the Stretto House was further analyzed. The results of the analysis of duration in the Stretto House design process showed that duration is expressed as phenomenological time through the continuity and movement of the perceptual phenomena of space, sound, light and material that reflected Merleau-Ponty's anchoring and Bartok's Music for Strings, Percussion and Celesta. The results of the analysis of duration as an expression of reality in the Stretto House showed that duration is expressed as real time, as reality's continuous and diverse movement of vital duration, through the image and rhythm based on the intuitive recollection of the real self, sound, light and pond. Consequently, it was shown that the Stretto House could be understood as a vital space in which a vital movement of duration identical with the flow of our consciousness is expressed through the expression of reality in Bergson's philosophy of life. This study is meaningful as a foundational study of the experiential space of phenomena through Bergson's philosophy of life.

Future-oriented Characteristics Examined through the Identity and Modernity of Sonia Delaunay's Work

  • Keumhee Lee
    • Journal of Fashion Business
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    • v.27 no.6
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    • pp.47-65
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    • 2023
  • The purpose of this study is to derive the future-oriented characteristics Sonia Delaunay presented at the time based on the identity and modernity shown in her works and diverse activity. The scope of study spans from 1907 to the start of World War II and includes both applied and fine arts, with a focus on textiles and fashion. The research method is a literary study that includes old documents, exhibition booklets, and explanations from museum curators. The visual materials are actual works observed at exhibitions and digital images of various exhibitions. As a result of the research, she was a practitioner who expressed her identity in marriage, artwork, textiles, and fashion. In order to embody her design and express modernity, she showed geometric and modern motifs and she incorporated a sense of bright color and modernized light into her work by following the principle of simultaneous contrast in color. Additionally, she applied Hungarian embroidery techniques to simple materials and created geometric abstraction with her simultaneous colors, which contributed to both originality and the mass production of textile design. The future-oriented characteristics she presented are the dynamism of modern rhythm, the expansion of convergence and collaboration, the innovation of new production and exhibition, the media of consumer society, and the femininity of modern life. She recognized the mass consumer society and mass production of the early 20th century and actively utilized various media and genres to evoke a dynamic sense necessary for modern life and presented a design to be seen as a modern woman.

An Analysis of the Fine Arts Activities on the Standard Childcare Curriculum Guidebook(for 2 years) for Teachers Based on the Elements and Principle of Fine Arts (미술의 요소와 원리에 근거한 만 2세 표준보육과정 교사용 지도서 미술활동 분석)

  • Kim, Soon Hee;Lee, Soon Bok
    • Korean Journal of Childcare and Education
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    • v.14 no.4
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    • pp.63-83
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    • 2018
  • Objective: The purpose of this study was to analyze how the elements and principles of fine arts were reflected in art related activities in the teacher's manual on standard childcare curriculum for a period of 2 years. Methods: The analysis criteria for the elements of fine arts were modified and complemented based on Kim and Gang(2011) and the same was done for the principles of fine arts based on Lee et al(2015). Results: First, as a result of analyzing the art contents according to life theme in art related activities, 'artistic expression' appeared the most in all nine life themes. Second, as a result of analyzing the art related contents in the standard childcare curriculum for 2 years based on the elements of fine arts, plane, texture, shape, color, volume, line, spot, space, composition, light and shade appeared in order. Third, as a result of analyzing the art related contents on the principles of fine arts, movement, emphasis, variety, unity, rhythm, proportion, balance and pattern appeared in order. Conclusion/Implications: The results of this research suggest that the childcare activities have to be devoloped in order to provide the balanced experiences with fine arts activities.

Lighting Design through Slice techniques of Domestic Pine (국내산 소나무 슬라이스 기법을 통한 조명디자인 개발연구)

  • Seo, Seok-Min;Kim, Chung-Ho
    • Journal of the Korea Furniture Society
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    • v.22 no.4
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    • pp.270-277
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    • 2011
  • This study aims to find new solutions to the problem of utilization of materials and techniques represented in the development of modern lighting design. LED is an important component in modern lighting design and pine tree is one of the most popular domestic wood in furniture design in Korea. In this study, design is developed into various types of furniture such as a table, a chest, and a lighting, by researching manufacturing process and examining the use of slicing pine tree. The technique of slicing pine tree is a simple linear arrangement that was traditionally used in wooden furniture in Lee dynasty, with an emphasis on repetitive rhythm. The slicing technology is used to expand the usage of domestic pine tree. The beauty of natural wood is expressed with the transmission of light by applying this technique to the lighting design. It also brings new communication in between artificial lighting and natural wood combining this traditional technique and LED lighting in design. Finally, this study suggests particular value through the convergence of analog and digital by using the traditional wooden technique that keeps natural wood prints and new digital technology by using LED lighting. More discussions and research about this subject are expected continuously through this study.

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A Study on Embroidery Patterns of Miao Women′s Traditional Costume Guizhou Province in China (중국 귀주성 묘족 여자복식의 수증문양에 관한 연구)

  • 김영신;홍정민
    • Journal of the Korean Society of Costume
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    • v.52 no.1
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    • pp.21-36
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    • 2002
  • The Miaos have their own unique and luxurious culture traditional and modern formed as they have experienced repeated fusion into and resistance against the Han Race or the Chinese in their long and old history. Taijiang County of Guizhou Provice, in which whey have been living, is endowed with natural beauty. Thus their culture enjoys abundant and diverse contents of artificial and natural character. Naturally, their costume reflects cultural and natural features in abundance and variety. This dissertation aims to investigate the artistic character of Miaos' traditional costume as reflected in patterns for their embroidery. As for the artistic character of the patterns for embroidery, the following were found. To begin with, the space in the Miaos' embroidery is, unlike the measurable three-dimensional space found in Greek art, unmeasurable and fantastic with its beauty, majesty and peculiarity. It is as if immersed in limitless space, they were in communion with gods and universe. Another characteristic is the use of image construction beyond mere imitation. Their mode of image construction was realistic in that patterns as a whole reveal an abstract form or meaning but separately they portray visual representations of concrete thins in nature. Still another is that sense of motion conveyed by the basic curve line is full of life. It was the result of using light rhythm breaking stereotypic balance and symmetry. Finally, the colouring was abstract, and a strong contrast between black and white was gorgeous and fantastic.

A Study of Tie-Dye in the Contemporary Fashion (현대패션에 나타난 홀치기 염에 관한 연구)

  • Kim, Sun-Young
    • Fashion & Textile Research Journal
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    • v.13 no.5
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    • pp.695-704
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    • 2011
  • This study is an attempt to explore the expressive techniques and characteristics of tie-dye shown in the contemporary fashion. In doing so, the study conducted a literature review and analyzed the works show cased for 2001S/S through 2010F/W, especially from the "big four" collections in Paris, Milan, New York and London. In the contemporary fashion, tie-dye techniques such as tying, folding and sewing are used in an independent or combined manner to express unique images. They also highlight decorative images in combination with a variety of decorative techniques including draping, pleating, beading. In light of its characteristics, tie dye expresses unique formative aesthetics with diverse patterns and creates more gorgeous images than when many different colors are used for dyeing. The dyeing process works as a critical factor influencing the overall image of design, as it is expressed as a pattern by being applied on the whole of an item rather than in part of clothes. The characteristics of tie-dye techniques used in the contemporary fashion are associated with the expressions of natural beauty, abstract decorative beauty, and dynamic rhythmical beauty.

Effect of Water Temperatures and Photoperiods on Gondal Development in Banded Catfish Pseudobagrus fulvidraco (동자개(Pseudobagrus fulvidraco)의 생식소 발달에 수온과 광주기가 미치는 영향에 관한 연구)

  • Lim, Sang-Gu;Han, Chang-Hee
    • Journal of Fisheries and Marine Sciences Education
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    • v.24 no.6
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    • pp.854-861
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    • 2012
  • To investigate the role of water temperatures and photoperidos as environmental cues regulating reproductive rhythm in banded catfish Pseudobagrus fulvidraco, rearing experiments were conducted using sveral rearing regimes conbined with changes in photoperiods and water temperatures during growing and spawning periods. GSI of $23^{\circ}C$ was significantly higher than $18^{\circ}C$ in female, but 9 light of 18 and $23^{\circ}C$ were no difference in male. In case of estradiol, $18^{\circ}C$ and 15 L was higher than other experintal precinct after 20 days. But, end of the experiment, all of experimental precinct were no difference. Testosteron of female was no difference in $18^{\circ}C$-9 and 15 L after 20 days. Testosteron of male was no difference in $18^{\circ}C$-9 L. In case of 11-KT, control level was $0.39{\pm}0.03$ ng/mL and $18^{\circ}C$-9 L was no significantly difference after 20 days. But, 15 L was higher than other experimental precinct.

Sleep and Resilience (수면과 회복력)

  • Lee, So-Jin;Park, Chul-Soo;Kim, Bong-Jo;Lee, Cheol-Soon;Cha, Boseok;Lee, Dongyun
    • Sleep Medicine and Psychophysiology
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    • v.22 no.2
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    • pp.53-56
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    • 2015
  • Good sleepers tend to more resilient than poor sleepers. As sleep and resilience may have a bidirectional relationship, it is important to explore the relationship between healthy sleep and resilience. Objectively and subjectively measured sleep quality showed positive association with resiliency. In one study, more resilient adolescents had higher sleep efficiency, less light sleep, more slow-wave sleep, and a smaller number of awakenings after sleep onset. Circadian typology, jetlag and circadian misalignment may be associated with the capacity to deal with adversity. Eveningness, exposure to chronic jetlag and circadian misalignment might be risk factors for development of psychological problems and mental disorders. Additional studies are needed to evaluate whether promoting healthy sleep behaviors results in increased resilience.

Change on Lens Accommodation and Pupil Light Reflex in VDT works (VDT작업이 안 조절반응과 동공 대광반사에 미치는 영향)

  • Kim, Eun-A;Kim, Yang-Ho;Jin, Young-Woo;Chai, Chang-Ho;Choi, Yong-Hyu;Moon, Young-Hahan
    • Journal of Preventive Medicine and Public Health
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    • v.30 no.3 s.58
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    • pp.599-608
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    • 1997
  • We studied on change of lens accommodation and pupil light reflex caused by VDT work in six women and compared them with those of other office works. The results were as follows. 1. In VDT work the accommodation contraction velocity decreased during the first 2-hr VDT task, then recovered markedly by the end of the one-hour lunch break, and decreased again by the end of the 2nd 2-hr VDT task. Changes of relaxation velocity showed similar pattern although it was less typical than that of contraction velocity 2. There was no marked change in accommodation contraction velocity and amplitude of accommodation in general office work and near-distance office work, and in the near-distance office work accommodation relaxation velocity decreased according to work load without recovery after lunch break. 3. Initial pupil diameter, initial pupil area of light reflex decreased significantly during VDT task only in VDT work and didn't recover after lunch break. These results suggest possibility that changes of accommodation contraction velocity, accommodation relaxation velocity, near point distance, and pupil diameter and area are useful in evaluating characteristics of VDT work. For this, more research adjusted individual differences, circadian rhythm, emotional stress needs.

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