• Title/Summary/Keyword: BlackBody

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Numerical Investigation of Blackbody Design for Spaceborne Image Sensor Non-uniformity Characteristic Calibration (우주용 영상센서 출력특성 교정용 흑체 설계의 해석적 유효성 검토)

  • Kim, Hye-In;Choi, Pil-Gyeong;Jo, Mun-Shin;Oh, Hyun-Ung
    • Journal of Aerospace System Engineering
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    • v.14 no.3
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    • pp.42-50
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    • 2020
  • For calibration of the non-uniformity characteristics of the space-borne infrared (IR) sensor, a black body system shall provide estimated representative surface temperature at various reference temperatures by using the limited number of temperature sensors. The black body system proposed in this study has an I/F flange integrated on the rear side of the black body for installation of the heat pipe to transfer the residual heat after the black body heat-up. This design allows for obtaining a circular symmetric thermal contour of black body with low surface temperature gradient, leading to much easier representative temperature estimation. Additionally, this provides mechanically stable thermal I/F under launch and on-orbit environmental loads, as well as allowing a fail safe design by using the two heat pipes. Also, a highly accurate temperature estimation is possible even if the temperature sensors are attached on the surface on the rear side of the black body. The effectiveness of the thermal design of the proposed black body has been verified through the on-orbit thermal analysis. Based on the results, the representative surface temperature was estimated according to the number and position of the temperature sensors.

Seasonal Variation in Scrotal Circumference and Semen Characteristics of Black Bedouin and Black Bedouin-Damascus Crossbred Bucks

  • Kridli, R.T.;Tabbaa, M.J.;Barakeh, F.S.
    • Asian-Australasian Journal of Animal Sciences
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    • v.20 no.3
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    • pp.359-364
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    • 2007
  • The objective of this study was to evaluate monthly variation in semen characteristics in Black Bedouin and Black Bedouin${\times}$Damascus crossbred bucks. Twenty one Black Bedouin Goat bucks (BG) and 20 $F_1$ Black Bedouin${\times}$Damascus crossbred goat bucks (CB) were used in the study. Animals were 2 to 5 years old at the beginning of the study. Body weight (BW), body condition score (BCS), scrotal circumference (SC) and semen samples were evaluated monthly for all bucks. Body weight, BCS and SC differed according to month of collection (p<0.0001). Body weight and BCS were greater in the spring and summer months while SC reached their highest values during the autumn months. No differences were detected between breeds with respect to semen characteristics with the exception of ejaculate volume (p<0.05) and ejaculate appearance (p=0.053) which were greater in CB than in BG bucks. With the exception of ejaculate appearance, all semen characteristics were influenced by month of collection (p<0.05). Semen concentration and motility were better during the late summer and autumn months than during the spring. The percentage of abnormal spermatozoa declined from its greatest values in the spring to its lowest values in the autumn. Results of the present study show no effects of goat breed on most of the studied parameters. In general, most semen quality parameters were better in both breeds during the autumn than the spring months. Minimal variation in semen quality was observed between the summer and autumn months indicating the ability to use bucks for semen collection and for natural breeding during both of these seasons.

Effect of Experimental Diets Containing Krills on the Growth and Body Composition of Juvenile Black Rockfish Sebastes schlegeli (실험사료 중 크릴 첨가가 조피볼락 Sebastes schlegeli 치어의 성장 및 체성분에 미치는 영향)

  • Lee, HaeYoung;Nam, Myung-Mo
    • Korean Journal of Ichthyology
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    • v.32 no.2
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    • pp.70-77
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    • 2020
  • A feeding experiment was conducted to investigate the effects of replacement of dietary fish meal by frozen whole krill (FWK) and/or krill meal (KM) on growth performance and body composition of juvenile black rockfish, Sebastes schlegeli. The basal experimental diet (ED) contained 58.4% fish meal (FM) as a control, the other five EDs were formulated with the protein replacement ratio of fish meal by as 0, 10, 20, 30, and 40%, respectively (FWKM0, FWK10, FWK20, FWK20KM10, FWK20KM20 and FWK20KM20HP). Each diet was fed to juvenile rockfish initially weighing 3.09±0.02 g/fish in a flow-through system. The control ED containing 58.4% FM and 10% FWK diet showed significantly higher weight gain and feed efficiency than all the other EDs containing 20, 30, and 40% FWK and/or KM. But the survivals, whole-body moistures, crude proteins and lipids of black rockfish fed all EDs were similar in all EDs. The only whole-body ashes of juvenile black rockfish were significantly differentiated by feeding the various EDs containing different levels of FWK and/or KM with a protein and lipid levels adjustment. These results suggest that dietary frozen whole Antarctic krill and/or krill meal inclusions could not improve the growth but change the whole-body ashes in juvenile black rockfish. Therefore, this study further indicates that dietary more than 20% of FWK and/or KM supplementation could not be a potential source of animal protein to replace fishmeal in juvenile black rockfish.

Enhancement of body performance and growth performance of juvenile mahseer (Tor soro) using differently colored containers

  • Teuku Fadlon Haser;Eddy Supriyono;Kukuh Nirmala;Widanarni;Tri Heru Prihadi;Tatag Budiardi;Reza Syamsudin;Muh Saleh Nurdin
    • Fisheries and Aquatic Sciences
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    • v.27 no.5
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    • pp.283-293
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    • 2024
  • Mahseer (Tor soro) growth performance tends to be slow, necessitating further development and intensification of cultivation. One way to develop aquaculture intensification is to manipulate cultivation containers to create optimal environmental conditions for the mahseer to grow. This study aimed to examine the body performance and growth performance of mahseer reared in different colored containers. Experimental research with completely randomized design was employed, with four colored container treatments namely treatment A (transparent), B (green), C (blue), and D (black), with four replications in each treatment. Findings indicate that different rearing media colors had significant effect on absolute length (4.68 ± 0.24 cm), absolute weight (1.58 ± 0.35 g), specific growth rate (2.17 ± 0.38%), feed conversion ratio (2.87 ± 0.04), survival rate (100 ± 0.00%), gross energy (3,816 ± 65.05 cal/g), and body proximate. Physiologically, mahseer fish bred using blue and black containers tend to be more resistant to stress.The best body performance and growth performance were observed in the blue and black colored containers.

Aesthetic Characteristics of the Little Black Dress in the Modern Fashion - Mainly Focused on Works after the Year 2000 - (현대패션에 나타난 리틀 블랙드레스의 미적특성 -2000년 이후를 중심으로-)

  • Kim, Sun-Young
    • Journal of the Korean Society of Costume
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    • v.57 no.4 s.113
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    • pp.18-29
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    • 2007
  • Since its birth, "Little black dress" that has been prospering and reviving continually for 80 years, is always favored as classical fashion item. This study focuses on how the "Little black dress", regarded as the beginning of the modern fashion, could become an eternal item over a century by analyzing the aesthetical characteristics of it. Thus, we can better understand the modern women and aesthetic value of modern fashion. The precedented studies and literatures are reviewed for recognizing the development of "Little black dress," and the scope of this study is limited only after the year 2000. Also, fashion work collections and various domestic and international fashion magazines are analyzed demonstratively. After the Little Black Dress was born with the bullish black color in the year 2000, the aesthetic characteristics of the newly spotlighted Little Black Dress in the modern fashion are as the following. First is modernism. Modern style of black dress is appeared through simple and moderate expressions such as pursuit of simple line, minimization of decoration and exclusion of accessories. Second is sensuality that emphasizes flashiness of black by gloss or see-through fabric and exposing one's body parts or dress that exposes body's curves not only express women's physical attraction but also show off woman's social status or roles. Third is feminism. Ruffle, ribbon, flowing-like fabric, and rhythmical details express charms of sophisticated and trendy women as well as romantic image of girlish sensibility. Fourth is hybridism. Experimental and creative thinking like designers' unique re-interpretation of "little black dress," fresh view to sexuality, breaking up of the existing principle of clothing compositions give wholly new aesthetic value.

Rewriting Race in Hopkins's Of One Blood; Or, the Hidden Self: "the Hidden Self," Past/Memory, Incest, and Black Female Body (홉킨스의 인종 다시쓰기-"숨겨진 자아,"과거/기억, 근친상간, 그리고 흑인여성의 몸)

  • Kang, Hee
    • Journal of English Language & Literature
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    • v.54 no.2
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    • pp.301-322
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    • 2008
  • Pauline Hopkins's Of One Blood; Or, the Hidden Self was published in the Colored American Magazine during 1902-03. As a literary experimentalist and a political protester, Hopkins uses her fiction as a medium to overcome and ameliorate the violently racialized surroundings of the turn-of-the-century America. Having been faced with racist rhetorics and theories growing on biological differences between races, Hopkins must have felt an overwhelming urgency to challenge the heritage of slavery in American history. In order to speak out her political agenda in such a milieu, she needed a new setting as well as new narrative materials for the new era. She had to move the setting from America to Africa, the ancient utopian Ethiopia; her interest in the ancient African civilization reflects both a popular African-American vision of Africa and the movement of "black nationalism" of the time. She also needed materials from nineteenthcentury sciences, the newly evolving theories of psychology and mysticism (spiritualism/mesmerism), to explore the meaning of "the hidden self" which unfolds the complex nature of Hopkin's position on race, "blood," and African-American racial subjectivity. Hopkins in the novel explores not the color line but the bloodline. Tracing the horrific legacy of incest in the history of slavery, she attempts to redefine the true racial identity of African-Americans in America and to reconstruct their past, both family and race history. At the very center of her major tropes in the novel-such as "of one blood," "the hidden self," and incest-exists female body. Black female body, though it represents the violent site of sexual body (rape and incest) in slavery, ultimately becomes a vehicle to convey and preserve the truth of racial memory/past/history for African-Americans. As a conveyor of the past, black women not just connect the past and the present but also reawaken AfricanAmericans with the legacy of the African 'pure' bloodline. Hopkins's vision here necessitates the reevaluation of black women's role in family and history, heralding the 20th-century black feminine writing. With the major tropes, Hopkins clearly suggests that the blood of (African-)Americans is unrecognizably intermixed. Although the novel ends with ambivalence and without resolution on what Africa signifies, those tropes certainly offer her a vehicle for criticizing as well as for challenging the racial reality of America.

Black Fashion-manias' Images and Fashion Styles (블랙패션마니아의 추구이미지와 패션스타일)

  • Lee, Jeong Hwa;Ha, Jisoo
    • Fashion & Textile Research Journal
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    • v.22 no.2
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    • pp.139-148
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    • 2020
  • This study classifies black fashion-mania by each type based on their motivation for wearing black fashion as well as verifies how they express their style. To achieve the objectives of this study, the research questions are as follows. First, the images of black fashion-manias are classified. Second, each type of black fashion enthusiasts' motivations for wearing black fashion are verified. Last, black fashion-mania style are analyzed according to image types. In order to answer the research questions, a literature review and in-depth interviews (total 30 respondents (male 15, female 15) were executed. As a result, black fashion-manias use black fashion for self protection, their self-images such as charismatic professional image, modern sophisticated image, body-conscious sexy image, avant garde image which is an anti-fashion norm and unique image. The strong reason why black fashion-manias insist on black fashion is to 'look cooler'. The expressions could be articulated from sophisticated styling techniques that appear to be undecorated rather than an overt decorated styling. It is helpful information to plan black fashion products and to establish a design direction that requires an understanding of why black fashion is pursued, while promoting an understanding of groups of black fashion-mania.

A Study on the Comparison of the Glam and Punk Make-up - Focused on the 1970s - (글램과 펑크 메이크업의 비교 연구 - 1970년대를 중심으로 -)

  • Chung, Hyun-Sook;Jeong, Hee-Young
    • The Research Journal of the Costume Culture
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    • v.17 no.1
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    • pp.76-89
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    • 2009
  • Popular music unites people who have different genders, ages, locals, and values. Through the popular music, youth interchange their emotion and create their fashion. Fashion and music formed the twin pillars on which the first historically significant youth sub-culture was built. Glam rock and Punk rock which won popularity in the 1970s influenced the fashion of the times. The purpose of this study is to compare Glam and Punk make-up which appeared as a symbol of the rebel against an older generation. The methodology utilized in this study was the analysis of materials from the survey through the literature, internet sites, and visual references. The results of this study are as follows: In face make-up, Glam used a white base to appear cosmic; on the other hand, Punk used a white base to appear pale and horrid. In eye make-up, Glam used black, pink, and blue eye shadow, and accented the eye by using black eye lines. Punk used black eye shadow, and drew black circles or squares around eyes. In lip make-up, Glam used pink, purple, red, and black lip color and silver and pink lip gloss to glitter. Punk used red and black lip color to appear horrid. In body make-up, Glam used glitter powder to appear with a bright skin. Punk drew tattoos and horror patterns in their body. The common themes of Glam and Punk make-up were rebellion, androgyny, and the beauty of ugliness as well as a self-created persona.

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Boundaryless Characteristics of Posthumanist Black Color Fashion (포스트휴머니즘 블랙 컬러 패션의 탈경계적 특징)

  • Kijeong Choi;JIAYI XUE;Seunghee Suh
    • Journal of Fashion Business
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    • v.28 no.4
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    • pp.113-128
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    • 2024
  • This study explored boundaryless characteristics of Posthumanist black color fashion by examining fashion collections from 2018 to 2023 that explicitly incorporated Posthumanist paradigms through literature review and case analysis. Black color fashion reflects key Posthumanist attributes such as dissolution of boundaries in ecology, academia, gender, and Western-centrism. These characteristics are manifested as 'organic expression of nature and technology encompassing the body,' 'robust expression of hybridized imagery,' and 'fusion of Eastern traditional cultural expressions.' In the 'organic expression of nature and technology,' flora and fauna motifs are applied or an advanced technology is employed to realize organic forms, offering an experimental representation of post-anthropocentrism, focusing on avant-garde and sensuous fashion images. 'Robust expression of hybridized imagery' combines masculine body expressions with bold accessories to convey a resistant fashion image to gender identity norms while utilizing traditional male fashion items to present a strong and charismatic image. 'Fusion of Eastern traditional cultural expressions' integrates traditional elements from various Eastern cultures into materials, producing opulent yet ascetic fashion images through designs that can conceal the body's silhouette, reflecting a restrained image of black in Eastern cultures. This study provides a multi-layered interpretation of black color fashion in the Posthuman era, addressing themes such as 'representation of diverse organic life forms, gender fluidity, and challenges to Western-centric narratives,' contributing to a deeper understanding of how fashion interacts with socio-cultural contexts.

Characterization of Materials and Color Formation for Black Potteries from the Proto-Three Kingdoms Period in Ulsan, Korea (울산지역 원삼국시대 흑색토기의 재질 및 발색 특성)

  • Kim, Su Kyoung;Jang, Sungyoon;Lee, Chan Hee
    • Journal of Conservation Science
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    • v.37 no.2
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    • pp.77-89
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    • 2021
  • In this study, materials and color formation techniques were assessed for black potteries excavated from the Janghyeon-dong, Jungsan-dong and Gyodong-ri sites during the Proto-Three Kingdoms period in Ulsan, Korea. Although the black potteries were black superficially, the inner cores were either black or reddish yellow. Microscopy analysis identified that body clay was used for reddish iron oxide rich soils with quartz, alkali feldspar and mica, along with grains of myrmechite texture. Additionally, as marginal differences exist in the contents of SiO2, Fe2O3 and CaO, the composition of the host rock and clay distributed around the sites was affected. Thus, we can deduce that pottery was made by soiling at a short distance. Raman spectroscopy results revealed that the black layer of the black pottery was used as amorphous combustion carbon. In addition, as a transparent layer of brown lacquer was observed on the substrate that was in contact with the surface layer, the black layer of the pottery induced black color development by a combination of combustion carbon and lacquer. Based on the mineral composition and microtexture of the body clay, the firing temperature of the potteries seemed to range from 750 to 850℃, whereas the lacquer layer was pyrolyzed at 468℃ by thermal analysis. Therefore, a combined layer of combustion carbon and lacquer, which formed the black color, was painted after the body clay was fired.