• Journal of Environmental Science International
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• v.22 no.11
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• pp.1403-1413
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• 2013

The effects of cadmium ions ($Cd^{2+}$) on the Chl a fluorescence of Ricciocarpos natans were investigated in order to determine whether Chl fluorescence can be used as a biomarker to estimate the physiological responses of plants to cadmium stress. In all plants treated with $Cd^{2+}$, the image of Fv/Fm, which represents the maximum photochemical efficiency of PSII, changed as the $Cd^{2+}$ concentration increased, when treated for 48 h or more. Changes of ${\Phi}_{PSII}$ and $Q_P$ images were recognized even at 10 ${\mu}M$ $Cd^{2+}$. The Chl a O-J-I-P fluorescence transient was also affected even at 10 ${\mu}M$ $Cd^{2+}$. The fluorescence yield decreased considerably in steps J, I and P in plants treated with $Cd^{2+}$, although a typical polyphasic rise was observed in non-treated plants. The Chl fluorescence parameters, Fm, Fv/Fo, Sm, SFIabs, PIabs and ETo/CS, decreased as the $Cd^{2+}$ concentration increased, while the Mo and Kn parameters increased. Peroxidase activity decreased significantly and catalase activity increased as the $Cd^{2+}$ concentration increased. Because of its sensitivity to $Cd^{2+}$ Ricciocarpos natans is useful in experiments investigating the responses of plants to cadmium exposure. Several parameters (Fm, Fv/Fo, Sm, SFIabs, PIabs, ETo/CS, Mo and Kn) can be applied to determine quantitatively the physiological states of plants under cadmium stress.

• Journal of the Institute of Electronics Engineers of Korea TC
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• v.43 no.5 s.347
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• pp.121-127
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• 2006

It is well known the fact that turbo codes has better performance as the number of iteration and the interleaver size increases in the AWGN channel environment. However, as the number of iteration and the interleaver size are increased, it is required much delay and computation for iterative decoding. Therefore, it is important to devise an efficient criterion to stop the iteration process and prevent unnecessary computations and decoding delay. In this paper, it proposes the efficient stop criterion algorithm for turbo codes using the maximum sign change of LLR. It is verifying that the proposal variable iterative decoding controller can be reduced the average iterative decoding number compared to conventional schemes with a negligible degradation of the error performance.

• Journal of the Korean Chemical Society
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• v.10 no.2
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• pp.67-75
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• 1966

Four kinds of clays from Sinyewon mine which is located in Chungchoungnam-Do district and two kinds of Japanese clays (Gairome, Kibushi) were selected and studied on the fundamental properties of these clays and those which are refined by the elutriation method. Chemical analysis, grading analysis such as refractoriness, specific gravity, color, fired color and plasticity, particle size distribution, various thermal tests, X-ray diffraction analysis and electron microscopic survey were carried out on these clays. The comparison of domestic clays with Japanese clays was made. 1. In chemical composition and physical properties, these four kinds of Sinyewon clays are almost similar to each other and also to Gairome and Kibushi clays. In refractoriness, Gairome and Kibushi clays have relatively high value such as SK 34 and 35, while Sinyewon clays have the value of about SK 32. Especially Sinyewon clay B has the low refractoriness (SK 18) and plasticity. Refined clays have the tendency of somewhat higher value than crude ones in refractoriness. 2. When burnt up to $900^{\circ}C$, the coefficients of contraction of Sinyewon clays were under 1.5%, Gairome under 1.3%, Kibushi under 3.0%. Only Sinyewon clay B showed expansion (1.0%) instead of contraction. 3. X-ray diffraction analysis and electron micrography showed that all of four Sinyewon clays and two Japanese clays are mainly composed of poorly crystallized kaolin, containing small amount of halloysite, sericite and considerable amount of quartz and feldspar. Sinyewon clay B contains especially large amount of quartz and feldspar. In general, it has been found out that the refined clays were free from large amount of iron oxide, quartz and feldspar.

• Journal of the Korea Fashion and Costume Design Association
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• v.12 no.2
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• pp.21-39
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• 2010

The purpose of this study is to develop a creative technique in fashion illustration through analyzing expressive characteristics of $d{\acute{e}}paysement$. This study is analyzed by examining the general theories of $d{\acute{e}}paysement$ and investigating the expressive technique related to the method of $d{\acute{e}}paysement$ in surrealism art and the expressive characteristics which is applied to fashion illustration. In this study, the researcher examines cases of the application of $d{\acute{e}}paysement$ to the fashion illustration through reviewing fashion illustrators' art works created since 2000. $D{\acute{e}}paysement$ is unfamiliar impression with lexical meaning in french that is translated by transposition or displacement technique, or country and one's home leave or person put in strange living environment. The characteristics of $d{\acute{e}}paysement$ in fashion illustration include spatial distortion, combination of heterogeneous objects located anywhere odd and modification and conversion of objects such as material change, change-over of scale in usual objects and conversion of inanimate objects into organism. As a result of reviewing the expressive characteristics of Depaysement from fashion illustration artworks, it is found that the fashion illustration with $d{\acute{e}}paysement$ fortified the individuality in fashion illustration and helps produce a creative inspiration which results in a distinctive ideas. This also has a greate possibilities to produce a tremendous ideas in fashion illustration.

• Journal of Korean Clinical Nursing Research
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• v.23 no.3
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• pp.321-331
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• 2017

Purpose: The purpose of this study was to investigate the effect of customer experience management on nursing service satisfaction of cancer patients and their intent to revisit the hospital and also to identify empathy ability of oncology nurses. Methods: Participants were 376 cancer patients and 190 oncology nurses from a tertiary hospital in Korea. Cancer patients' satisfaction with nursing care and intent to continue using the hospital were measured and empathy of oncology nurses was measured using Empathy Construct Rating Scale. Data were analyzed using descriptive statistics, ${\chi}^2$ test, t-test, one-way ANOVA and stepwise multiple regression analysis. Results: Patient satisfaction with nursing care and intent to continue using the hospital were higher in patients who received the customer experience management program than those who did not. Oncology nurses' ability to empathize was high. Clinical career, participate in customer experience management and education level together explained 20% of variance in empathy ability of oncology nurses. Conclusion: Findings from this study confirm that customer experience management affects patient satisfaction with nursing service and intent to continue using the hospital. Further research is necessary to reaffirm the empathy ability of the oncology nurses and to identify the related various factors.

• Journal of the Korea Fashion and Costume Design Association
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• v.18 no.2
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• pp.191-206
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• 2016

A designer representing an avant guard fashion, Martin Margiela introduces experimental collections that seek ideational and ideal values, breaking away from limits of popular universality or usefulness of fashion. This study seeks to interpret Martin Margiela's design characteristics from the perspective of ambiguity, and thereby examine theoretical basis of meaning interpretation of his ambiguous and innovative design. In poetic meaning ambiguity is verbal nuance which gives room for alternative reaction the same piece of language. By way of study methods, concepts and characteristics of ambiguity were examined based on William Empson's seven types of ambiguity, and characteristics of Martin Margiela's fashion design were analyzed from the perspective of ambiguity. In the study, expression of ambiguity in Martin Margiela's fashion design was categorized into ambiguity of forms, that of meanings, and that of existence. Ambiguity of forms could be found indeterminate form of clothes and flat clothes. Ambiguity of meaning refers to ambiguity arising from the possibility of the meaning that fashion design is going to convey diverse interpretation. Ambiguity of meaning could be found up-cycling vintage clothes, semi-couture, signs of time, unfitting size, and symbolic letter. Ambiguity of existence could be found inanimate dummy, face shrouded with a veil and expression of multiple identity. In Martin Margiela's fashion design ambiguity gives rise to joy of something fresh, amusement felt about what deviates from normality and the possibility of fashion design's endless creations.

• Fashion & Textile Research Journal
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• v.17 no.5
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• pp.704-717
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• 2015

In modern fashion fabrics became an important element that leads the current of fashion beyond materials. Also, it has a creative role that reflects emotional and visual aspects, and it is considered as a mega trend that will lead the $21^{st}$ century fashion industry. The value of fashion products is affected not only by the style and design but also the sensuous properties like color, pattern, texture, and drape of fabrics. Therefore, in this study, characteristics of fabric trend between 2007 S/S and 2010 S/S will be analyzed focused on Premiere Vision, which influenced many Korean fashion trend information companies, while looking into the fabric trends shown in the world's top four collections-Paris, Milan, London, and New York-and Seoul collection, and comparing and analyzing the acceptance level of those. Fashion fabric is an important part in fashion design and change with social environment and value, its considered that the role and importance of subject matters increases in changing fashion design toward globalization by meeting various personality which is diversified more and more. It is to provide specific and practical data to be used for the Korean fashion industry, which can be used as useful information for future fabric researchers and people in the fashion industry for integrated study of fashion design and fashion fabric.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.16 no.12
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• pp.8896-8900
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• 2015

Recently, various career paths draw young workers from twenty to forty to the metro city in Korea. The korea's agriculture sector has decrease in population and productivity which result a threat for it to become an aging society. Also, our country has a difficulty in a tough competition with other countries through agricultural market-opening such as WTO and FTA. In this paper, we introduce a technology using open-source project including Raspberry that easily accessible and applicable to an agricultural industry. In other words, as we build a device monitoring the production environment, everyone can use agricultural sector through an IoT technology, solve the problem with a labor shortage through production process automation, check the condition of the agricultural environment in real time, enhance the quality of the agricultural product by corresponding a certain condition, and improve the competitiveness through a competitive price comparing to the worldwide farm product. Also, we find a way to use data to the other business through data collection and analysis in a process of using the IoT.

• Journal of Environmental Science International
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• v.24 no.12
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• pp.1591-1600
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• 2015

The response of the freshwater microalga, Chlorella vulgaris, to heavy metal stress was examined based on chlorophyll fluorescence analysis to assess the toxic effects of heavy metals in freshwater ecosystems. When toxic effects were analyzed using regular chlorophyll fluorescence analysis, photosystem II activity($F_v/F_m$) decreased significantly when exposed to $Cu^{2+}$ and $Hg^{2+}$ for 12 h, and decreased in the order of $Hg^{2+}>Cu^{2+}>Cd^{2+}>Ni^{2+}$ when exposed for 24h. The effective photochemical quantum yield(${\phi}{\prime}_{PSII}$), chlorophyll fluorescence decrease ratio($R_{Fd}$), minimal fluorescence yield($F_o$), and non-photochemical quenching(NPQ), but not photochemical quenching(qP), responded sensitively to $Hg^{2+}$, $Cu^{2+}$, and $Cd^{2+}$. These results suggest that $F_v/F_m$, as well as ${\phi}{\prime}_{PSII}$, $R_{Fd}$, $F_o$, and NPQ could be used to assess the effects of heavy metal ions in freshwater ecosystems. However, because many types of heavy metal ions and toxic compounds co-occur under natural conditions, it is difficult to assess heavy metal toxicity in freshwater ecosystems. When Chlorella was exposed to heavy metal ions for 12 or 24h, $F_v/F_m$ and maximal fluorescence yield($F_m$) changed in response to $Hg^{2+}$ and $Cu^{2+}$ based on image analysis. However, assessing quantitatively the toxic effects of several heavy metal ions is challenging.

• Korean Journal of Community Nutrition
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• v.10 no.3
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• pp.331-340
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• 2005

The purpose of this study was to provide basic data to improve college food service satisfaction with sanitary, environment and service by comparing 2 contract-managed and 2 self-operated college food services in Daejeon and Chungnam area. According to the results, sanitation and environment satisfaction degrees of contract-managed college food services were higher than those of self-operated food services. The satisfaction degrees with service were also higher in contract-managed food services than self-operated food services except the category of quick food delivery. In all categories comprising the food service satisfaction, the satisfaction degrees were lower in female students than in male students. There were more negative self-perceived clinical symptoms in female students than male students. The higher the negative self-perceived clinical symptoms scores were, the lower the satisfaction degrees with food service were, which suggests that かe health state of students was one of the factors that influenced college food service satisfaction. There was no difference between contract-managed and self-operated food services in terms of satisfaction with overall food taste and overall satisfaction degree. The average satisfaction degree for the contractmanaged food services in terms of price relative to food quality was lower than that for self-operated food services. According to stepwise multiple regression analysis, 'overall food taste', 'price relative to quality', 'kindness of employees', 'coping with proposed opinions' and 'quicknless of food delivery' in decreasing order, were the most relatively important attributes for overall satisfaction. There should be further studies on important management factors to improve satisfaction with sanitary, environment and service by self-operated college food service.