• Title/Summary/Keyword: On-line environmental education

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Analysis of Educational Content Related to 'Clothing Life Industry' in Middle and High Schools According to Curriculum Revision (교육과정 개정에 따른 중·고등학교 '의생활산업' 관련 교육내용 분석)

  • Lee, Eun Hee
    • Fashion & Textile Research Journal
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    • v.26 no.1
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    • pp.15-24
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    • 2024
  • At a time when the direction of the middle and high school curriculum is being discussed in line with the change in the future education paradigm to the 4th industrial revolution and the post-COVID-19 era, this study attempted to establish the identity of middle and high school clothing life education by exploring the clothing life contents with content analysis method and analyzing the 'clothing life industry' related educational content of the curriculum revision period. Following the revision of the curriculum, the contents related to the middle and high school 'clothing life industry' were not systematic. In the 2022 revised curriculum, the 'clothing life industry' and the digital fashion industry are presented as content related to the 'clothing life industry', so it is expected that the textbooks implemented in the educational field in the future will mention specific content about this. In addition, research on the direction of sustainable clothing life is also needed because the 'clothing life industry' can be an important cause of environmental pollution from production to consumption. Above all, it is expected that follow-up studies will be conducted to enhance the value of clothing life education in the future in the reality that the awareness of middle and high school clothing life education is low.

Automated assessment of cracks on concrete surfaces using adaptive digital image processing

  • Liu, Yufei;Cho, Soojin;Spencer, Billie F. Jr;Fan, Jiansheng
    • Smart Structures and Systems
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    • v.14 no.4
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    • pp.719-741
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    • 2014
  • Monitoring surface cracks is important to ensure the health of concrete structures. However, traditional visual inspection to monitor the concrete cracks has disadvantages such as subjective inspection nature, associated time and cost, and possible danger to inspectors. To alter the visual inspection, a complete procedure for automated crack assessment based on adaptive digital image processing has been proposed in this study. Crack objects are extracted from the images using the subtraction with median filter and the local binarization using the Niblack's method. To adaptively. determine the optimal window sizes for the median filter and the Niblack's method without distortion of crack object an optimal filter size index (OFSI) is proposed. From the extracted crack objects using the optimal size of window, the crack objects are decomposed to the crack skeletons and edges, and the crack width is calculated using 4-connected normal line according to the orientation of the local skeleton line. For an image, a crack width nephogram is obtained to have an intuitive view of the crack distribution. The proposed procedure is verified from a test on a concrete reaction wall with various types of cracks. From the crack images with different crack widths and patterns, the widths of cracks in the order of submillimeters are calculated with high accuracy.

A Risk Evaluation Model of Power Distribution Line Using Bayesian Rule -Overhead Distribution System- (베이즈 규칙을 활용한 배전선로 위험도 평가모델 -가공배전분야-)

  • Joung, Jong-Man;Park, Yong-Woo
    • The Transactions of The Korean Institute of Electrical Engineers
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    • v.62 no.6
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    • pp.870-875
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    • 2013
  • After introducing diagnosis equipment power failure prevention activities for distribution system have become more active. To do facility diagnosis and maintenance work more efficiently we need to evaluate reliability for the system and should determine the priority line with appropriate criteria. Thus, to calculate risk factor for the power distribution line that are composed of many component facilities its historical failure events for the last 5 years are collected and analysed. The failure statics show that more than 60% of various failures are related to environment factors randomly and about 20% of the failures are refer to the aging. As a strategic evaluation system reflecting these environmental influence is needed, a system on the basis of the probabilistic approach related statical variables in terms of failure rate and failure probability of electrical components is proposed. The figures for the evaluation are derived from the field failure DB. With adopting Bayesian rule we can calculate easily about conditional probability query. The proposed evaluation system is demonstrated with model system and the calculated indices representing the properties of the model line are discussed.

Seven New Records of Geometrid Moths (Lepidoptera: Geometridae) from Korea

  • Choi, Sei-Woong;Kim, Sung-Soo;Heo, Un-Hong
    • Animal Systematics, Evolution and Diversity
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    • v.33 no.2
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    • pp.123-130
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    • 2017
  • The family Geometridae, which is one of the most species-rich taxa of Lepidoptera, includes more than 23,000 species worldwide and over 800 species in South Korea. Herein, we record six species of Geometridae for the first time in Korea. Jodis urosticta and Jodis amamiensis can be characterized by their greenish wings and strongly dentate ante- and postmedial lines on the fore and hindwings. These species can also be separated by the shape of the valva of the male genitalia. Pelagodes antiguadraria can be characterized by their greenish wings, whitish medial bands on the forewing and whitish postmedial line on the hindwing. Brabira kasaii can be characterized by the thick grayish band-shaped central fascia of their fore- and hindwings. Sauris marginepunctata can be characterized by the greenish ground color of the forewing, the dark ochreous medial bands and subterminal line and the grayish hindwing. Philereme vetulata can be characterized by their dark brownish wing color and the band-shaped central fascia of the forewing, as well as the medially projected postmedial line of the hindwing. Echthrocollix minuta can be characterized by their pale grayish wing color, brownish postmedial and subterminal lines and large discal dot.

A Study on the Innovation of Course Contents and Instruction of Basic Design in Interior Design Education (실내디자인 교육에서의 기초디자인의 교육내용 및 교육방법 개선에 관한 연구)

  • Han, Young-Ho;Kim, Dong-Young
    • Korean Institute of Interior Design Journal
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    • no.3
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    • pp.46-57
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    • 1994
  • Today, it is a fact that interior design plays a very important role as much as architecture on contributing to our society as a rising new professional field. On the other hand, our interior design education is still in immagture stage unlike the graudal development of the mood of interior design line , If the interior design field has any educational value to invest to be noticed as an environmental design that creates the human environment. There are great deal of meanings to indicate the direction for better education after recognizing the manu different problems on presently offering interior design education. Therefore, the objectives of this study is , after establishing the innovative methods of education and course contents of the four year interior design program, to produce the interior designers of manifold abilities, who is able to fit well in the professional practice, in order to materialize the settlement of interior design education which will be the key point in our circumstances, which has ow social recognition toward interior design. There were four phases in this study. First was to gather and to analyze information from printed materials, such as curriculum and catalog from each institution. Secondly, we had collected existing previous studies in all interior design area in order to sude as references. Thirdly, we have managed to suggest ideal improvement for better basic design program in the area of interior design education after the arranging and analyzing . Finally, we were able to persuade the importance of improved basic design program to the interior design education parties and to suggest the direction for the future. Because interior design as a scholastic pursuit is combined practical application study by the art and technology, it emphasizes specialty . From that reason interior design education must be performed as professional specialist education instead of vocational education. In another words, the ultimate goal of the interior design objectives must be in producing professional specialist.

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Identification of moving train loads on railway bridge based on strain monitoring

  • Wang, Hao;Zhu, Qingxin;Li, Jian;Mao, Jianxiao;Hu, Suoting;Zhao, Xinxin
    • Smart Structures and Systems
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    • v.23 no.3
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    • pp.263-278
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    • 2019
  • Moving train load parameters, including train speed, axle spacing, gross train weight and axle weights, are identified based on strain-monitoring data. In this paper, according to influence line theory, the classic moving force identification method is enhanced to handle time-varying velocity of the train. First, the moments that the axles move through a set of fixed points are identified from a series of pulses extracted from the second derivative of the structural strain response. Subsequently, the train speed and axle spacing are identified. In addition, based on the fact that the integral area of the structural strain response is a constant under a unit force at a unit speed, the gross train weight can be obtained from the integral area of the measured strain response. Meanwhile, the corrected second derivative peak values, in which the effect of time-varying velocity is eliminated, are selected to distribute the gross train weight. Hence the axle weights could be identified. Afterwards, numerical simulations are employed to verify the proposed method and investigate the effect of the sampling frequency on the identification accuracy. Eventually, the method is verified using the real-time strain data of a continuous steel truss railway bridge. Results show that train speed, axle spacing and gross train weight can be accurately identified in the time domain. However, only the approximate values of the axle weights could be obtained with the updated method. The identified results can provide reliable reference for determining fatigue deterioration and predicting the remaining service life of railway bridges.

Six Newly Recorded Lepidopteran Insects (Lepidoptera) with Notes on Immature Stages in Korea

  • Shin, Bora;Kim, Sung-Soo;Choi, Sei-Woong
    • Animal Systematics, Evolution and Diversity
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    • v.38 no.4
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    • pp.214-221
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    • 2022
  • Six species in five families of Lepidoptera were newly recorded from Korea. The adult specimens of these six species were obtained during the rearing caterpillars collected across Korea. Agonopterix omelkoi Lvovsky (Depresariidae) can be distinguished by the ochreous forewing with a dark brown slanted line, a dark brown triangular spot, and a blackish discal dot, and the whitish hindwing. Dichomeris ferruginosa Meyrick (Gelechiidae) can be diagnosed by the light brown forewing with two relatively large blackish dots and suffusion of dark brown along the dorsum and subtermen, and the grayish hindwing. Pseudohedya satoi Kawabe (Tortricidae) can be diagnosed by the dark ochreous forewing with several medially curved dark ochreous medial lines, and the large light grayish tornal marking, and the dark grayish hindwing. Rhodoneura hyphaema (West) (Thyrididae) can be diagnosed by the reddish forewing with a relatively thick postmedial band, and the reddish hindwing with a narrow dark reddish straight medial band. Comibaena subprocumbaria (Oberthür) (Geometridae) can be diagnosed by the greenish forewing with a whitish apical marking that bordered with a brownish or dark reddish line that connected to the termen, and the distal abdominal segments with whitish and dark reddish dots. Perixera absconditaria (Walker) (Geometridae) can be diagnosed by the light brownish forewing with a relatively thick, slanted, dentate brownish postmedial line, and the light brownish hindwing with a small white discal spot. We provide the diagnosis and figures of adults and larvae, and DNA barcoding data.

Deriving vertical velocity in tornadic wind field from radar-measured data and improving tornado simulation by including vertical velocity at velocity inlet

  • Yi Zhao;Guirong Yan;Ruoqiang Feng;Zhongdong Duan;Houjun Kang
    • Wind and Structures
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    • v.38 no.4
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    • pp.245-259
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    • 2024
  • In a tornadic wind field, the vertical velocity component in certain regions of tornadoes can be significant, forming one of the major differences between tornadic wind fields and synoptic straight-line wind fields. To better understand the wind characteristics of tornadoes and properly estimate the action of tornadoes on civil structures, it is important to ensure that all the attributes of tornadoes are captured. Although Doppler radars have been used to measure tornadic wind fields, they can only directly provide information on quasi-horizontal velocity. Therefore, lots of numerical simulations and experimental tests in previous research ignored the vertical velocity at the boundary. However, the influence of vertical velocity in tornadic wind fields is not evaluated. To address this research gap, this study is to use an approach to derive the vertical velocity component based on the horizontal velocities extracted from the radar-measured data by mass continuity. This approach will be illustrated by using the radar-measured data of Spencer Tornado as an example. The vertical velocity component is included in the initial inflow condition in the CFD simulation to assess the influence of including vertical velocity in the initial inflow condition on the entire tornadic wind field.

The Estimation of Benzo(a)pyrene Emission from Fuel Combustion in the Seosan Area (서산지역에서 연료연소에 의해 배출된 benzo(a)pyrene의 배출량 산정)

  • Kim, Ok;Song, Youngho;Lee, Jinheon
    • Journal of Environmental Health Sciences
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    • v.43 no.1
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    • pp.55-63
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    • 2017
  • Objectives: This study estimated the emission quantity of benzo(a)pyrene(BaP) produced by fuel combustion in the Seosan area, and analyzed the uncertainty regarding the emissions. Methods: It was based on data from a national agency and from public institutions. Emissions were estimated by using national-level guidelines. The total estimated emissions were analyzed by performing Monte Carlo analysis. Results: The full emission quantity of BaP which was discharged by fuel combustion in the Seosan area stood at 1,194.79 g/yr. The point source emissions came to 184.16 g/yr (95% CI; 158.40-209.39). The line source emissions reached 315.33 g/yr (95% CI; 284.99-344.03). The area source emissions accounted for 695.31 g/yr (95% CI; 605.10-793.88). Chemical and compound manufacturing was the highest with 639.13 g/yr (95% CI; 542.95-728.24) in terms of emissions and oil refinery emissions were high with 153.10 g/yr (95% CI; 129.19~177.46). It was found in the Seosan area that the major source of BaP is the manufacturing of chemicals and chemical products. Conclusion: The emission quantity of BaP which was discharged by the fuel combustion in Seosan area reached 1,194.79 g/yr. Research needs to be continued for the definite estimation of emission of BaP henceforth.

Factors Influencing Obesity among Rural and Urban Adolescent : Analysis of 2013 Korean Youth Health Behavior Survey (도시와 농촌 청소년의 비만에 영향을 미치는 요인: 2013 청소년 건강행태 조사결과를 중심으로)

  • Lee, Jae Yeon;Kang, Soon Nam;Kim, Sun Ah;Son, Dong Min;Lee, Bo Gyeong;Ham, Ok Kyung
    • Journal of Korean Public Health Nursing
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    • v.33 no.1
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    • pp.73-84
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    • 2019
  • Purpose: This study was conducted to differentiate the factors associated with the BMI group of adolescents between rural and urban areas, and provide baseline data in the development of health education programs considering their personal and environmental characteristics. Methods: Secondary data analysis was performed using the data from an on-line survey of the 9th adolescence behavioral health in 2013. The instruments included general, behavioral, and psychosocial characteristics. This study was a cross-sectional survey conducted with 26,513 adolescents. The data were analyzed using a t-test, two-way ANOVA, and multinomial logistic regression analysis. Results: Significant differences in the prevalence of obesity between urban and rural areas were nated and rural areas exhibited a higher prevalence of obese adolescents (p<0.05). The factors associated with the BMI group were the mothers' education level (low) and lower age of adolescents (middle school) in rural areas, wherase those for urban areas were gender (boys) and the fathers' education level (low) (p<0.05). Conclusion: Because there was a significant difference in the prevalence of obesity between rural and urban areas, it is necessary to develop a tailored education program considering the regional and environmental characteristics that the adolescents belonged to in order to prevent and control adolescent obesity.